/* ---------------------------------------------------------
   OpenCode · Learn — Clean white theme
   --------------------------------------------------------- */

:root {
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --bg-alt: #f2f4f8;
  --surface: #ffffff;
  --border: #e7eaf0;
  --border-strong: #d8dde6;

  --text: #0f172a;
  --text-muted: #5b6472;
  --text-dim: #8a93a3;

  --accent: #0f172a;
  --accent-2: #2563eb;
  --accent-soft: #eef2ff;
  --success: #16a34a;
  --warn: #f59e0b;
  --danger: #e11d48;

  --code-bg: #0f172a;
  --code-fg: #e6edf7;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);

  --container: 1160px;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

h1, h2, h3, h4, h5 { font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1rem; }

p { margin: 0 0 1em; color: var(--text-muted); }

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-alt);
  padding: 0.15em 0.4em;
  border-radius: 6px;
  color: var(--text);
}

kbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82em;
  padding: 2px 8px;
  background: #fff;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 6px;
  color: var(--text);
  box-shadow: var(--shadow-xs);
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 10px 16px;
  z-index: 1000; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; gap: 24px;
}
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em;
  color: var(--text);
}
.logo.small { font-size: 0.95rem; }
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
}
.logo-dim { color: var(--text-dim); font-weight: 500; margin-left: 2px; }

.nav { display: flex; gap: 6px; }
.nav a {
  padding: 8px 12px; border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.94rem;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}
.nav a:hover { background: var(--bg-alt); color: var(--text); }

.header-actions { display: flex; gap: 10px; align-items: center; }

.menu-toggle {
  display: none;
  background: transparent; border: 1px solid var(--border);
  width: 40px; height: 40px; border-radius: 10px;
  padding: 0; cursor: pointer;
  align-items: center; justify-content: center; flex-direction: column; gap: 4px;
}
.menu-toggle span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; display: block; }

.mobile-nav {
  display: none;
  padding: 8px 24px 16px;
  border-top: 1px solid var(--border);
  background: #fff;
}
.mobile-nav a {
  display: block; padding: 12px 4px; color: var(--text);
  border-bottom: 1px solid var(--border);
  font-weight: 500;
}
.mobile-nav a:last-child { border-bottom: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 16px; border-radius: 10px;
  font-weight: 600; font-size: 0.94rem;
  border: 1px solid transparent;
  cursor: pointer; transition: all 0.15s ease;
  white-space: nowrap;
}
.btn-lg { padding: 14px 22px; font-size: 1rem; border-radius: 12px; }

.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: #1f2a44; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-outline {
  background: #fff; color: var(--text);
  border-color: var(--border-strong);
}
.btn-outline:hover { border-color: var(--text); }

.btn-ghost { color: var(--text-muted); }
.btn-ghost:hover { color: var(--text); background: var(--bg-alt); }

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 48px;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(37, 99, 235, 0.06), transparent 60%),
    radial-gradient(900px 400px at -10% 10%, rgba(15, 23, 42, 0.04), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  padding: 6px 12px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero-copy h1 { margin-bottom: 20px; }
.hero-copy .accent {
  background: linear-gradient(135deg, #0f172a 0%, #2563eb 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead { font-size: 1.12rem; color: var(--text-muted); max-width: 560px; }

.hero-ctas { display: flex; gap: 12px; margin: 28px 0 32px; flex-wrap: wrap; }

.hero-meta {
  list-style: none; padding: 0; margin: 0;
  display: flex; gap: 28px; flex-wrap: wrap;
  color: var(--text-muted); font-size: 0.94rem;
}
.hero-meta strong { color: var(--text); font-weight: 700; }

/* Terminal mock */
.hero-visual { perspective: 1400px; }
.terminal {
  background: #0f172a;
  border-radius: 14px;
  overflow: hidden;
  box-shadow:
    0 30px 70px -20px rgba(15, 23, 42, 0.35),
    0 10px 20px -10px rgba(15, 23, 42, 0.2);
  border: 1px solid #1e293b;
  transform: rotateY(-4deg) rotateX(3deg);
  transition: transform 0.5s ease;
}
.terminal:hover { transform: rotateY(-2deg) rotateX(1deg); }
.terminal-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: #0b1220;
  border-bottom: 1px solid #1e293b;
}
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }
.terminal-title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #94a3b8;
}
.terminal-body {
  padding: 20px 22px 24px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: #e2e8f0;
  min-height: 300px;
}
.terminal-body p { margin: 0 0 8px; color: #e2e8f0; }
.terminal-body .prompt { color: #60a5fa; margin-right: 8px; }
.terminal-body .out { padding-left: 14px; }
.terminal-body .muted { color: #94a3b8; }
.terminal-body .hl { color: #fbbf24; }
.terminal-body .hl-g { color: #4ade80; }
.terminal-body code { background: transparent; color: #fbbf24; padding: 0; }
.caret {
  color: #60a5fa;
  animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.trust {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px dashed var(--border);
}
.trust-label {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 16px;
  font-weight: 600;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.trust-grid > div {
  font-size: 0.9rem; color: var(--text);
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex; flex-direction: column; gap: 4px;
}
.trust-grid > div span {
  font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--text-dim); letter-spacing: 0.08em;
}

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head {
  max-width: 720px; margin: 0 auto 56px; text-align: center;
}
.section-head .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-2);
  background: var(--accent-soft);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.section-sub { font-size: 1.05rem; color: var(--text-muted); }

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}
.feature-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-2);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature-card h3 { margin-bottom: 8px; }
.feature-card p { margin: 0; font-size: 0.94rem; }

/* ---------- Tabs & Code ---------- */
.tabs {
  display: flex; gap: 6px;
  background: #fff;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 12px;
  max-width: max-content;
  margin: 0 auto 24px;
  box-shadow: var(--shadow-xs);
  overflow-x: auto;
}
.tab {
  background: transparent; border: 0; cursor: pointer;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.92rem; font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: all 0.15s ease;
}
.tab.active { background: var(--accent); color: #fff; }
.tab:not(.active):hover { background: var(--bg-alt); color: var(--text); }

.tab-panels { max-width: 820px; margin: 0 auto; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fade-in 0.2s ease; }
@keyframes fade-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.code-block {
  background: var(--code-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid #1e293b;
  box-shadow: var(--shadow-sm);
  margin: 0 0 12px;
}
.code-block.compact { margin-top: 10px; }
.code-block.dark { box-shadow: var(--shadow-md); }
.code-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  background: #0b1220;
  border-bottom: 1px solid #1e293b;
}
.code-lang {
  font-family: var(--font-mono); font-size: 0.78rem;
  color: #94a3b8; text-transform: lowercase; letter-spacing: 0.04em;
}
.copy-btn {
  background: transparent;
  border: 1px solid #1e293b;
  color: #94a3b8;
  padding: 4px 10px; border-radius: 6px;
  font-size: 0.78rem; cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.15s ease;
}
.copy-btn:hover { color: #fff; border-color: #334155; }
.copy-btn.copied { background: #14532d; color: #bbf7d0; border-color: #14532d; }

.code-block pre {
  margin: 0; padding: 20px 22px;
  font-family: var(--font-mono);
  font-size: 0.88rem; line-height: 1.7;
  color: var(--code-fg);
  overflow-x: auto;
}
.code-block pre code { background: transparent; color: inherit; padding: 0; font-size: inherit; }

.helper { font-size: 0.9rem; color: var(--text-muted); margin: 10px 2px 0; }

.verify-box {
  margin-top: 36px;
  max-width: 820px;
  margin-left: auto; margin-right: auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
}
.verify-box h4 { margin-bottom: 10px; }

/* ---------- Steps ---------- */
.steps {
  counter-reset: none;
  list-style: none;
  padding: 0;
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 20px;
}
.step {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 22px;
  align-items: start;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.step:hover { box-shadow: var(--shadow-sm); border-color: var(--border-strong); }
.step-num {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.05rem;
}
.step-body h3 { margin-bottom: 8px; }
.step-body p { margin-bottom: 12px; }

/* ---------- Split sections ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 72px;
}
.split:last-child { margin-bottom: 0; }
.split.reverse { grid-template-columns: 1.1fr 1fr; }
.split.reverse .split-side:first-child { order: 2; }

.split-side h3 { font-size: 1.5rem; margin-bottom: 14px; }
.split-side p { font-size: 1rem; margin-bottom: 18px; }

.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li {
  position: relative;
  padding: 8px 0 8px 28px;
  color: var(--text);
  font-size: 0.95rem;
  border-bottom: 1px dashed var(--border);
}
.checklist li:last-child { border-bottom: 0; }
.checklist li::before {
  content: "";
  position: absolute; left: 0; top: 14px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent-soft) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232563eb'><path d='M6.5 11.5L3 8l1.4-1.4 2.1 2.1L11.6 3.5 13 4.9z'/></svg>") center / 12px no-repeat;
}

/* ---------- Commands ---------- */
.cmd-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.cmd-group {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.cmd-group h3 { margin-bottom: 14px; font-size: 1.1rem; }
.cmd-list { margin: 0; padding: 0; }
.cmd-list > div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  align-items: baseline;
}
.cmd-list > div:first-child { border-top: 0; padding-top: 0; }
.cmd-list dt { font-family: var(--font-mono); }
.cmd-list dt code { background: transparent; padding: 0; color: var(--accent-2); font-weight: 600; }
.cmd-list dd { margin: 0; font-size: 0.92rem; color: var(--text-muted); }

.callout {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  align-items: start;
  background: linear-gradient(135deg, #fff 0%, var(--accent-soft) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
}
.callout-icon {
  width: 44px; height: 44px;
  background: #fff;
  border-radius: 10px;
  color: var(--accent-2);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
}
.callout-icon svg { width: 20px; height: 20px; }
.callout h4 { margin-bottom: 4px; }
.callout p { margin: 0; font-size: 0.95rem; }

/* ---------- Config ---------- */
.prose {
  max-width: 820px; margin: 0 auto 20px;
  font-size: 1.02rem; color: var(--text-muted);
  text-align: center;
}
.config-notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.note {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.note h4 { margin-bottom: 8px; font-size: 1rem; }
.note p { margin: 0; font-size: 0.92rem; }

/* ---------- Tips ---------- */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.tip {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  overflow: hidden;
}
.tip::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);
  opacity: 0; transition: opacity 0.3s ease;
}
.tip:hover::before { opacity: 1; }
.tip-num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  display: block; margin-bottom: 10px;
  letter-spacing: 0.08em;
}
.tip h3 { font-size: 1.08rem; margin-bottom: 8px; }
.tip p { margin: 0; font-size: 0.93rem; }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin: 0 auto; }
.faq details {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 12px;
  transition: border-color 0.2s ease;
}
.faq details[open] { border-color: var(--border-strong); box-shadow: var(--shadow-xs); }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  list-style: none;
  position: relative;
  padding-right: 32px;
  color: var(--text);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  font-size: 1.4rem; color: var(--text-muted);
  transition: transform 0.2s ease;
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { margin: 12px 0 0; font-size: 0.95rem; }

/* ---------- CTA ---------- */
.cta {
  background: var(--accent);
  color: #fff;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(800px 300px at 80% 20%, rgba(37, 99, 235, 0.3), transparent 60%),
    radial-gradient(600px 300px at 10% 90%, rgba(255, 255, 255, 0.05), transparent 60%);
  pointer-events: none;
}
.cta-inner { text-align: center; position: relative; }
.cta h2 { color: #fff; margin-bottom: 12px; }
.cta p { color: rgba(255, 255, 255, 0.8); font-size: 1.1rem; margin-bottom: 28px; }
.cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta .btn-primary { background: #fff; color: var(--accent); }
.cta .btn-primary:hover { background: #e2e8f0; }
.cta .btn-outline { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.3); }
.cta .btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }

/* ---------- Footer ---------- */
.footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 56px 0 24px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.footer-note { margin: 16px 0 0; font-size: 0.88rem; color: var(--text-muted); max-width: 320px; }
.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.footer-nav h5 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 14px;
  font-weight: 600;
}
.footer-nav a {
  display: block;
  padding: 5px 0;
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: color 0.15s ease;
}
.footer-nav a:hover { color: var(--text); }

.footer-bottom {
  padding-top: 24px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 0.84rem; color: var(--text-dim);
}
.footer-bottom p { margin: 0; color: var(--text-dim); }

/* ---------- To top ---------- */
.to-top {
  position: fixed; right: 24px; bottom: 24px;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent); color: #fff;
  border: 0; cursor: pointer;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
  z-index: 40;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.to-top:hover { transform: translateY(-3px); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav, .header-actions .btn-ghost { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-actions .btn-primary { padding: 8px 14px; font-size: 0.88rem; }

  .hero { padding: 56px 0 32px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: 2; }
  .terminal { transform: none; }

  .trust-grid { grid-template-columns: repeat(2, 1fr); }

  .section { padding: 72px 0; }
  .feature-grid, .config-notes, .tips-grid { grid-template-columns: 1fr 1fr; }
  .cmd-grid { grid-template-columns: 1fr; }
  .split, .split.reverse { grid-template-columns: 1fr; gap: 24px; margin-bottom: 48px; }
  .split.reverse .split-side:first-child { order: 0; }

  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 600px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .btn-lg { width: 100%; }
  .trust-grid { grid-template-columns: 1fr; }
  .feature-grid, .config-notes, .tips-grid { grid-template-columns: 1fr; }
  .footer-nav { grid-template-columns: 1fr 1fr; }
  .step { grid-template-columns: 1fr; gap: 12px; padding: 22px; }
  .cmd-list > div { grid-template-columns: 1fr; gap: 2px; }
  .callout { grid-template-columns: 1fr; }
  .code-block pre { font-size: 0.82rem; padding: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .terminal { transform: none !important; }
}