:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.75rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  /* Strikeroom palette: simulator-room charcoal green + one turf accent */
  --color-bg: oklch(0.97 0.006 140);
  --color-surface: oklch(0.99 0.004 140);
  --color-surface-offset: oklch(0.94 0.01 140);
  --color-border: oklch(0.25 0.02 150 / 0.14);
  --color-text: oklch(0.22 0.02 155);
  --color-text-muted: oklch(0.45 0.015 155);
  --color-primary: oklch(0.45 0.11 148);        /* deep turf green for light surfaces */
  --color-primary-hover: oklch(0.38 0.1 148);
  --color-dark: oklch(0.17 0.012 160);          /* simulator room */
  --color-dark-2: oklch(0.21 0.014 160);
  --color-on-dark: oklch(0.96 0.005 140);
  --color-on-dark-muted: oklch(0.78 0.015 150);
  --color-glow: oklch(0.8 0.19 148);            /* LED strip green, dark surfaces only */
  --color-glow-hover: oklch(0.86 0.17 148);

  --radius-sm: 0.375rem; --radius-md: 0.5rem; --radius-lg: 0.75rem;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-book: 0 30px 60px oklch(0.05 0.01 160 / 0.55), 0 8px 18px oklch(0.05 0.01 160 / 0.4);

  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;
  --content-wide: 1200px;
}

.wrap { width: min(100% - 2 * clamp(var(--space-5), 5vw, var(--space-12)), var(--content-wide)); margin-inline: auto; }

.skip { position: absolute; left: var(--space-4); top: -100px; background: var(--color-glow); color: var(--color-dark); padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm); z-index: 100; font-weight: 700; }
.skip:focus { top: var(--space-4); }

h1, h2, h3 { font-family: var(--font-display); font-weight: 800; letter-spacing: -0.01em; }
h2 { font-size: var(--text-2xl); line-height: 1.05; }

.dark { background: var(--color-dark); color: var(--color-on-dark); }
.dark :focus-visible { outline-color: var(--color-glow); }

.eyebrow { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-glow); margin-bottom: var(--space-4); }
.eyebrow-dark { color: var(--color-primary); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: var(--space-3) var(--space-6); background: var(--color-glow); color: oklch(0.15 0.02 160); font-weight: 700; font-size: var(--text-sm); border-radius: var(--radius-md); text-decoration: none; }
.btn:hover { background: var(--color-glow-hover); }
.btn:active { transform: translateY(1px); }
.btn-small { min-height: 44px; padding: var(--space-2) var(--space-4); }
.btn-large { min-height: 56px; padding: var(--space-4) var(--space-10); font-size: var(--text-base); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: oklch(0.17 0.012 160 / 0.92); backdrop-filter: blur(12px); border-bottom: 1px solid oklch(1 0 0 / 0.08); color: var(--color-on-dark); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); min-height: 68px; }
.wordmark { font-family: var(--font-body); font-weight: 700; font-size: var(--text-sm); letter-spacing: 0.16em; color: var(--color-on-dark); text-decoration: none; white-space: nowrap; }
.wordmark span { color: var(--color-glow); }
.nav { display: flex; gap: var(--space-8); margin-inline-start: auto; }
.nav a { color: var(--color-on-dark-muted); text-decoration: none; font-size: var(--text-sm); padding-block: var(--space-3); }
.nav a:hover { color: var(--color-on-dark); }

/* Hero */
.hero { padding-block: clamp(var(--space-12), 8vw, var(--space-24)) clamp(var(--space-16), 9vw, var(--space-32)); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(var(--space-10), 6vw, var(--space-20)); align-items: center; }
.hero h1 { font-size: var(--text-3xl); line-height: 0.98; max-width: 14ch; margin-bottom: var(--space-6); }
.lede { color: var(--color-on-dark-muted); font-size: var(--text-base); max-width: 54ch; margin-bottom: var(--space-8); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-6); margin-bottom: var(--space-8); }
.link-light { color: var(--color-on-dark); font-size: var(--text-sm); font-weight: 500; text-underline-offset: 4px; padding-block: var(--space-3); }
.link-light:hover { color: var(--color-glow); }
.meta { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-6); font-size: var(--text-xs); color: var(--color-on-dark-muted); }
.meta li { display: flex; align-items: center; gap: var(--space-2); }
.meta li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--color-glow); }
.hero-book { justify-self: center; perspective: 1400px; }
.hero-book img { width: min(400px, 100%); border-radius: 3px 8px 8px 3px; box-shadow: var(--shadow-book); transform: rotateY(-12deg) rotateX(2deg); outline: 1px solid oklch(1 0 0 / 0.08); }

/* Stats */
.stats { background: var(--color-dark-2); color: var(--color-on-dark); border-top: 1px solid oklch(1 0 0 / 0.06); }
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); }
.stats-row div { padding: var(--space-8) var(--space-4); display: flex; flex-direction: column; gap: var(--space-1); border-inline-start: 1px solid oklch(1 0 0 / 0.08); }
.stats-row div:first-child { border-inline-start: 0; padding-inline-start: 0; }
.stats-row strong { font-family: var(--font-display); font-size: var(--text-2xl); line-height: 1; color: var(--color-glow); font-variant-numeric: tabular-nums; }
.stats-row span { font-size: var(--text-sm); color: var(--color-on-dark-muted); }

/* Order */
.order { position: relative; padding-block: clamp(var(--space-16), 10vw, var(--space-32)); background: var(--color-dark); }
.order-media { position: absolute; inset: 0; }
.order-media img { width: 100%; height: 100%; object-fit: cover; object-position: 70% 50%; }
.order-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, oklch(0.17 0.012 160 / 0.9) 0%, oklch(0.17 0.012 160 / 0.55) 55%, oklch(0.17 0.012 160 / 0.15) 100%); }
.order-inner { position: relative; }
.order-card { max-width: 620px; background: oklch(0.99 0.004 140 / 0.97); color: var(--color-text); padding: clamp(var(--space-6), 4vw, var(--space-12)); border-radius: var(--radius-lg); }
.order-card h2 { font-size: var(--text-xl); line-height: 1.1; margin-bottom: var(--space-4); }
.order-card > p { color: var(--color-text-muted); margin-bottom: var(--space-6); }
.steps { list-style: none; display: grid; gap: 0; }
.steps li { display: grid; grid-template-columns: 3rem 1fr; padding-block: var(--space-3); border-top: 1px solid var(--color-border); font-weight: 500; }
.steps span { font-family: var(--font-display); font-weight: 800; color: var(--color-primary); font-variant-numeric: tabular-nums; }

/* Inside */
.inside { padding-block: clamp(var(--space-16), 9vw, var(--space-24)); }
.inside-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-10), 6vw, var(--space-20)); align-items: start; }
.inside h2 { margin-bottom: var(--space-8); max-width: 16ch; }
.chapters { counter-reset: ch; list-style: none; }
.chapters li { counter-increment: ch; display: grid; grid-template-columns: 2.75rem 1fr; padding-block: var(--space-3); border-top: 1px solid var(--color-border); }
.chapters li::before { content: counter(ch, decimal-leading-zero); font-weight: 700; color: var(--color-primary); font-variant-numeric: tabular-nums; }
.appendix { margin-top: var(--space-6); color: var(--color-text-muted); }
.preview { position: sticky; top: calc(68px + var(--space-6)); }
.tabs { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-4); }
.tabs button { min-height: 44px; padding: var(--space-2) var(--space-4); font-size: var(--text-sm); font-weight: 500; border: 1px solid var(--color-border); border-radius: var(--radius-full, 999px); color: var(--color-text-muted); background: var(--color-surface); }
.tabs button:hover { color: var(--color-text); border-color: oklch(0.25 0.02 150 / 0.3); }
.tabs button[aria-selected="true"] { background: var(--color-dark); color: var(--color-on-dark); border-color: var(--color-dark); }
.page-frame { background: var(--color-surface-offset); border-radius: var(--radius-lg); padding: clamp(var(--space-4), 3vw, var(--space-8)); }
.page-frame img { width: 100%; border-radius: 2px; box-shadow: 0 10px 30px oklch(0.2 0.02 155 / 0.16); transition: opacity 220ms cubic-bezier(0.16, 1, 0.3, 1); }
.page-frame img.fading { opacity: 0; }

/* Builds */
.builds { padding-block: clamp(var(--space-12), 8vw, var(--space-24)); background: var(--color-surface-offset); }
.section-head { max-width: 640px; margin-bottom: var(--space-10); }
.section-head h2 { margin-bottom: var(--space-4); }
.section-head > p:last-child { color: var(--color-text-muted); }
.build-grid { display: grid; grid-template-columns: 1fr 1.25fr 1fr; gap: var(--space-4); align-items: stretch; }
.build { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-8) var(--space-6); display: flex; flex-direction: column; gap: var(--space-3); }
.build p:last-child { color: var(--color-text-muted); font-size: var(--text-sm); }
.build-tag { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-primary); }
.build-price { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem, 1.1rem + 1vw, 2rem); white-space: nowrap; line-height: 1.1; font-variant-numeric: tabular-nums; }
.build-feature { background: var(--color-dark); color: var(--color-on-dark); border-color: var(--color-dark); }
.build-feature .build-tag { color: var(--color-glow); }
.build-feature p:last-child { color: var(--color-on-dark-muted); }
.fine { margin-top: var(--space-6); font-size: var(--text-xs); color: var(--color-text-muted); max-width: 80ch; }

/* Fit */
.fit { padding-block: clamp(var(--space-16), 9vw, var(--space-24)); }
.fit-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(var(--space-10), 6vw, var(--space-20)); }
.fit h2 { font-size: var(--text-xl); margin-bottom: var(--space-6); }
.muted-h { color: var(--color-text-muted); }
.ticks, .crosses { list-style: none; }
.ticks li, .crosses li { position: relative; padding: var(--space-3) 0 var(--space-3) var(--space-8); border-top: 1px solid var(--color-border); }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 1.05em; width: 12px; height: 7px; border-left: 2px solid var(--color-primary); border-bottom: 2px solid var(--color-primary); transform: rotate(-45deg); }
.crosses li { color: var(--color-text-muted); }
.crosses li::before, .crosses li::after { content: ""; position: absolute; left: 2px; top: 1.3em; width: 13px; height: 2px; background: var(--color-text-muted); transform: rotate(45deg); }
.crosses li::after { transform: rotate(-45deg); }

/* Independence */
.indie { padding-block: clamp(var(--space-16), 10vw, var(--space-24)); }
.indie-inner { max-width: 900px; }
.indie-quote { font-family: var(--font-display); font-weight: 700; font-size: var(--text-2xl); line-height: 1.12; max-width: 26ch; margin-bottom: var(--space-6); }
.indie-note { color: var(--color-on-dark-muted); max-width: 64ch; }

/* FAQ */
.faq { padding-block: clamp(var(--space-16), 9vw, var(--space-24)); }
.faq-inner { max-width: 820px; }
.faq h2 { margin-bottom: var(--space-8); }
details { border-top: 1px solid var(--color-border); }
details:last-of-type { border-bottom: 1px solid var(--color-border); }
summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); padding-block: var(--space-5); font-weight: 700; font-size: var(--text-base); min-height: 44px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-primary); transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1); }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--color-text-muted); padding-bottom: var(--space-6); }

/* Buy */
.buy { padding-block: clamp(var(--space-16), 9vw, var(--space-24)); }
.buy-grid { display: grid; grid-template-columns: auto 1fr; gap: clamp(var(--space-8), 6vw, var(--space-20)); align-items: center; max-width: 900px; }
.buy-cover { width: clamp(160px, 22vw, 260px); border-radius: 3px 6px 6px 3px; box-shadow: var(--shadow-book); }
.buy h2 { font-size: var(--text-2xl); margin-bottom: var(--space-4); }
.buy-price { display: flex; align-items: baseline; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-6); }
.buy-price strong { font-family: var(--font-display); font-size: var(--text-3xl); line-height: 1; color: var(--color-glow); }
.buy-price span { color: var(--color-on-dark-muted); font-size: var(--text-sm); }
.buy-note { margin-top: var(--space-4); font-size: var(--text-xs); color: var(--color-on-dark-muted); }

/* Footer */
.site-footer { background: var(--color-dark-2); color: var(--color-on-dark-muted); padding-block: var(--space-12); font-size: var(--text-sm); }
.footer-inner { display: grid; gap: var(--space-3); }
.wordmark-sm { font-size: var(--text-xs); }
.footer-fine { font-size: var(--text-xs); max-width: 90ch; }

/* Responsive */
@media (max-width: 960px) {
  .nav { display: none; }
  .hero-grid, .inside-grid, .fit-grid { grid-template-columns: 1fr; }
  .hero-book { order: -1; }
  .hero-book img { width: min(260px, 70vw); transform: none; }
  .preview { position: static; }
  .build-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .stats-row div:nth-child(3) { border-inline-start: 0; padding-inline-start: 0; }
  .stats-row div:nth-child(n+3) { border-top: 1px solid oklch(1 0 0 / 0.08); }
  .order-media::after { background: oklch(0.17 0.012 160 / 0.6); }
}
@media (max-width: 560px) {
  .header-inner { min-height: 60px; }
  .wordmark { font-size: var(--text-xs); letter-spacing: 0.12em; }
  .btn-small { padding-inline: var(--space-3); font-size: var(--text-xs); }
  .buy-grid { grid-template-columns: 1fr; }
  .buy-cover { width: 150px; }
  .hero h1 { font-size: clamp(2.25rem, 9vw, 2.75rem); }
}