/* ============================================== */
/* 18PACE · DESIGN SYSTEM v2.2 · 2026-09-09        */
/* Sky Performance theme · Sky Blue + White + Navy */
/* ============================================== */

:root {
  /* ---- Color · Sky Blue + White + Deep Navy (sky performance) ---- */
  --color-bg: #FFFFFF;
  --color-bg-elevated: #EAF6FD;
  --color-bg-deep: #102A43;
  --color-text: #17212B;
  --color-text-muted: #667786;
  --color-text-subtle: #92A4B2;
  --color-text-inverted: #FFFFFF;
  --color-dark: #102A43;
  --color-accent: #69BFEF;
  --color-accent-hover: #4FA8DC;
  --color-border: #E8EEF2;
  --color-border-subtle: #F0F4F8;
  --color-border-inverted: #2C3E5C;

  /* ---- Typography ---- */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

  /* Type scale (brief §05) */
  --text-hero: clamp(72px, 12vw, 168px);
  --text-display: clamp(56px, 8vw, 112px);
  --text-display-sm: clamp(40px, 6vw, 72px);
  --text-h1: clamp(40px, 5vw, 72px);
  --text-h2: clamp(32px, 4vw, 48px);
  --text-h3: clamp(24px, 2.5vw, 32px);
  --text-h4: 20px;
  --text-body: 16px;
  --text-body-lg: 18px;
  --text-small: 14px;
  --text-tiny: 12px;

  /* ---- Spacing · 8pt grid ---- */
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;
  --space-9: 128px;

  /* ---- Border radius (brief §21 · sharp & athletic) ---- */
  --radius-0: 0;
  --radius-1: 4px;
  --radius-2: 8px;
  --radius-3: 12px;

  /* ---- Shadows (minimal per brief §24) ---- */
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-2: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* ============================================== */
/* BASE                                            */
/* ============================================== */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv11', 'ss01', 'ss03';
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 150ms ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================== */
/* TYPOGRAPHY HIERARCHY                            */
/* ============================================== */
.text-display {
  font-size: var(--text-display);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.92;
  font-variant-numeric: tabular-nums;
}

.text-display-sm {
  font-size: var(--text-display-sm);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 0.95;
  font-variant-numeric: tabular-nums;
}

.text-hero {
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.88;
}

h1, .h1 {
  font-size: var(--text-h1);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin: 0 0 var(--space-4) 0;
}

h2, .h2 {
  font-size: var(--text-h2);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 var(--space-4) 0;
}

h3, .h3 {
  font-size: var(--text-h3);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 var(--space-3) 0;
}

h4, .h4 {
  font-size: var(--text-h4);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin: 0 0 var(--space-2) 0;
}

p { margin: 0 0 var(--space-3) 0; }

.eyebrow {
  font-size: var(--text-tiny);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

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

/* ============================================== */
/* LAYOUT                                          */
/* ============================================== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 var(--space-4); }
.container-narrow { max-width: 960px; margin: 0 auto; padding: 0 var(--space-4); }
.container-text { max-width: 720px; margin: 0 auto; padding: 0 var(--space-4); }

@media (min-width: 768px) {
  .container, .container-narrow, .container-text { padding: 0 var(--space-6); }
}

.section { padding: var(--space-8) 0; }
.section-lg { padding: var(--space-9) 0; }
@media (min-width: 768px) {
  .section { padding: var(--space-9) 0; }
}

.section-dark {
  background: var(--color-bg-deep);
  color: var(--color-text-inverted);
}
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 { color: var(--color-text-inverted); }
.section-dark .eyebrow { color: var(--color-text-subtle); }

.section-accent {
  background: var(--color-accent);
  color: var(--color-dark);
}

/* ============================================== */
/* NAVIGATION (brief §07)                          */
/* ============================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.nav-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-dark);
  color: var(--color-text-inverted);
  font-size: 13px;
  font-weight: 800;
  border-radius: var(--radius-1);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-5);
}
@media (min-width: 768px) { .nav-links { display: flex; } }

.nav-link {
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-text);
  position: relative;
}
.nav-link:hover { opacity: 0.7; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 10px 18px;
  background: var(--color-dark);
  color: var(--color-text-inverted);
  font-size: var(--text-small);
  font-weight: 600;
  border-radius: var(--radius-2);
  letter-spacing: -0.01em;
}
.nav-cta:hover { background: var(--color-bg-deep); }
.nav-cta-arrow { transition: transform 200ms ease; }
.nav-cta:hover .nav-cta-arrow { transform: translateX(3px); }

.nav-mobile {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}
@media (min-width: 768px) { .nav-mobile { display: none; } }

/* ============================================== */
/* HERO (brief §08)                                */
/* ============================================== */
.hero {
  padding: var(--space-7) 0 var(--space-8);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border-subtle);
}
@media (min-width: 768px) {
  .hero { padding: var(--space-8) 0 var(--space-9); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: end;
}
@media (min-width: 1024px) {
  .hero-grid { grid-template-columns: 1.4fr 1fr; gap: var(--space-8); }
}

.hero-headline {
  margin: var(--space-5) 0 var(--space-4);
}
.hero-headline .accent { color: var(--color-text); }
.hero-headline .accent-block {
  display: inline-block;
  background: var(--color-accent);
  padding: 0 8px;
  margin-left -8px;
}

.hero-sub {
  font-size: var(--text-body-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: var(--space-6);
  line-height: 1.5;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.hero-trust {
  margin-top: var(--space-5);
  font-size: var(--text-tiny);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
  font-weight: 600;
}
.hero-trust::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  margin-right: var(--space-2);
  vertical-align: 2px;
  border-radius: 50%;
}

/* Hero big number panel (right column on desktop · Sky Performance theme) */
.hero-pace-panel {
  background: var(--color-bg-elevated);
  color: var(--color-text);
  padding: var(--space-8) var(--space-7);
  border-radius: 0;
  position: relative;
}

.hero-pace-label {
  font-size: var(--text-tiny);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  font-weight: 600;
}

.hero-pace-number {
  font-size: clamp(140px, 22vw, 320px);
  font-weight: 800;
  letter-spacing: -0.07em;
  line-height: 0.82;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.hero-pace-unit {
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  font-family: var(--font-mono);
}

.hero-pace-secondary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}
.hero-pace-secondary-item .num {
  font-size: var(--text-h3);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  display: block;
  line-height: 1;
  color: var(--color-text);
}
.hero-pace-secondary-item .lbl {
  font-size: var(--text-tiny);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  display: block;
}

/* ============================================== */
/* CALCULATOR (brief §10-11)                       */
/* ============================================== */
.calc {
  padding: var(--space-8) 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border-subtle);
}
@media (min-width: 768px) { .calc { padding: var(--space-9) 0; } }

.calc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-7);
}
@media (min-width: 1024px) {
  .calc-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); align-items: start; }
}

.calc-input-block { border-top: 1px solid var(--color-text); padding-top: var(--space-4); }

.calc-label {
  font-size: var(--text-tiny);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  display: block;
}

.calc-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.calc-field input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) 0;
  font-family: inherit;
  font-size: var(--text-h2);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  caret-color: var(--color-text);
  transition: border-color 200ms ease, color 150ms ease;
  cursor: text;
  border-radius: 0;
  -webkit-appearance: none;
  appearance: none;
}
.calc-field input:hover {
  border-bottom-color: var(--color-text-muted);
}
.calc-field input:focus {
  outline: none;
  border-bottom-color: var(--color-text);
  border-bottom-width: 2px;
  padding-bottom: calc(var(--space-3) - 1px);
}
.calc-field-unit {
  font-size: var(--text-tiny);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
  font-weight: 600;
}

.calc-quick-targets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.calc-quick-btn {
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: 600;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-1);
  background: transparent;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  transition: all 150ms ease;
}
.calc-quick-btn:hover { border-color: var(--color-text); }
.calc-quick-btn.is-active {
  background: var(--color-accent);
  color: var(--color-dark);
  border-color: var(--color-accent);
  font-weight: 700;
}

/* Result panel (V2.2 · 5:13 visually dominant) */
.calc-result {
  padding: var(--space-5) 0;
  background: transparent;
  border-top: 1px solid var(--color-text);
}

.calc-result-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.calc-result-num {
  font-size: clamp(140px, 18vw, 240px);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 0.85;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
}

.calc-result-unit {
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-text-subtle);
  letter-spacing: 0.24em;
  font-family: var(--font-mono);
}

.calc-result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  padding-top: var(--space-6);
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}
.calc-result-item .num {
  font-size: var(--text-h4);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  display: block;
  line-height: 1;
  color: var(--color-text-muted);
}
.calc-result-item .lbl {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-subtle);
  font-weight: 600;
  display: block;
  margin-top: 4px;
}

.calc-print {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
}

/* ============================================== */
/* RACE TIMELINE (brief §12 · Sky theme)          */
/* ============================================== */
.timeline-section {
  padding: var(--space-8) 0;
  background: var(--color-bg);
  color: var(--color-text);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
@media (min-width: 768px) { .timeline-section { padding: var(--space-9) 0; } }

.timeline-section h2 { color: var(--color-text); }
.timeline-section .eyebrow { color: var(--color-text-muted); }

.timeline {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  margin-top: var(--space-6);
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 38px;
  height: 2px;
  background: var(--color-accent);
}

.timeline-stop {
  position: relative;
  text-align: center;
  padding-top: var(--space-5);
}

.timeline-stop::before {
  content: '';
  position: absolute;
  top: 31px;
  left: 50%;
  transform: translateX(-50%);
  width: 14px;
  height: 14px;
  background: var(--color-bg);
  border: 2px solid var(--color-text);
  border-radius: 50%;
  z-index: 1;
}
.timeline-stop.is-finish::before {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.timeline-stop-label {
  font-size: var(--text-tiny);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.timeline-stop-time {
  font-size: clamp(20px, 2.4vw, 32px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
  line-height: 1;
  color: var(--color-text);
}

.timeline-stop.is-finish .timeline-stop-time {
  color: var(--color-accent);
  font-weight: 800;
}

.timeline-stop.is-finish .timeline-stop-label {
  color: var(--color-accent);
  font-weight: 700;
}

.timeline-stop-action {
  font-size: var(--text-tiny);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  font-weight: 500;
  line-height: 1.4;
  padding: 0 4px;
}

/* Mobile · vertical */
@media (max-width: 767px) {
  .timeline {
    grid-template-columns: 1fr;
    gap: var(--space-3);
    margin-top: var(--space-5);
  }
  .timeline::before {
    left: 6px;
    top: 0;
    bottom: 0;
    right: auto;
    width: 2px;
    height: auto;
  }
  .timeline-stop {
    text-align: left;
    padding: 0 0 0 var(--space-5);
  }
  .timeline-stop::before {
    top: 6px;
    left: 0;
    transform: translateX(0);
  }
}

/* ============================================== */
/* BUTTONS                                         */
/* ============================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 14px 22px;
  font-family: inherit;
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--radius-2);
  border: 1px solid transparent;
  transition: all 200ms ease;
  cursor: pointer;
}
.btn-primary { background: var(--color-dark); color: var(--color-text-inverted); }
.btn-primary:hover { background: var(--color-bg-deep); }
.btn-primary .arrow { transition: transform 200ms ease; }
.btn-primary:hover .arrow { transform: translateX(3px); }

.btn-accent { background: var(--color-accent); color: var(--color-dark); }
.btn-accent:hover { background: var(--color-accent-hover); }

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-text);
}
.btn-outline:hover { background: var(--color-text); color: var(--color-text-inverted); }

.btn-text {
  background: transparent;
  color: var(--color-text);
  padding: 14px 0;
  font-weight: 600;
  border-bottom: 1px solid var(--color-text);
  border-radius: 0;
}
.btn-text .arrow { transition: transform 200ms ease; }
.btn-text:hover .arrow { transform: translateX(3px); }

/* ============================================== */
/* UTILITIES                                       */
/* ============================================== */
.divider { height: 1px; background: var(--color-border); margin: var(--space-6) 0; }
.divider-dark { height: 1px; background: var(--color-border-inverted); margin: var(--space-6) 0; }

.flex-row { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
.flex-col { display: flex; flex-direction: column; gap: var(--space-3); }

.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }

/* ============================================== */
/* ACCESSIBILITY (brief §29)                       */
/* ============================================== */
*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
*:focus:not(:focus-visible) { outline: none; }

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================== */
/* 05 · THE PLAN                                   */
/* ============================================== */
.section-plan {
  padding: var(--space-8) 0;
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border-subtle);
}
@media (min-width: 768px) { .section-plan { padding: var(--space-9) 0; } }

.plan-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-top: var(--space-6);
}
@media (min-width: 768px) {
  .plan-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
}

.plan-stage {
  padding: var(--space-5) 0 0;
  border-top: 1px solid var(--color-text);
}

.plan-stage-num {
  font-size: var(--text-tiny);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.plan-stage-km {
  font-size: var(--text-h3);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  margin-bottom: var(--space-3);
}

.plan-stage-title {
  font-size: var(--text-h2);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-3);
}

.plan-stage p {
  font-size: var(--text-body);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.plan-stage-target {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-subtle);
  display: block;
}

/* ============================================== */
/* 06 · REAL EXPERIENCE                            */
/* ============================================== */
.section-experience {
  padding: var(--space-8) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border-subtle);
}
@media (min-width: 768px) { .section-experience { padding: var(--space-9) 0; } }

.exp-block {
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-border);
}
.exp-block:last-child { border-bottom: 1px solid var(--color-border); }

.exp-block-km {
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.9;
  font-variant-numeric: tabular-nums;
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}

.exp-block-num {
  display: inline-block;
  font-size: var(--text-tiny);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  margin-right: var(--space-3);
  padding-right: var(--space-3);
  border-right: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.exp-block h3 {
  font-size: var(--text-h2);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.exp-block p {
  font-size: var(--text-body-lg);
  color: var(--color-text-muted);
  line-height: 1.55;
  max-width: 640px;
  margin: 0;
}

/* ============================================== */
/* 07 · RACE DAY CHECKLIST (Sky · strong contrast) */
/* ============================================== */
.section-raceday {
  padding: var(--space-8) 0;
  background: var(--color-bg-deep);
  color: var(--color-text-inverted);
  border-top: 1px solid var(--color-bg-deep);
}
@media (min-width: 768px) { .section-raceday { padding: var(--space-9) 0; } }

.section-raceday h2 { color: var(--color-text-inverted); }
.section-raceday .eyebrow { color: var(--color-text-subtle); }
.section-raceday .text-muted { color: var(--color-text-subtle); }

.raceday-list {
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-border-inverted);
}

.raceday-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: var(--space-3);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border-inverted);
  align-items: baseline;
}
@media (min-width: 768px) {
  .raceday-row { grid-template-columns: 140px 240px 1fr; gap: var(--space-6); }
}

.raceday-row-label {
  font-size: var(--text-tiny);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-subtle);
}

.raceday-row-value {
  font-size: var(--text-h4);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-inverted);
}

.raceday-row-detail {
  font-size: var(--text-body);
  color: var(--color-text-subtle);
  line-height: 1.5;
  grid-column: 1 / -1;
  margin-top: var(--space-2);
}
@media (min-width: 768px) {
  .raceday-row-detail { grid-column: 3; margin-top: 0; }
}

/* ============================================== */
/* 08 · MORE TOOLS                                 */
/* ============================================== */
.section-tools {
  padding: var(--space-8) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border-subtle);
}
@media (min-width: 768px) { .section-tools { padding: var(--space-9) 0; } }

.tool-list {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0 0;
  border-top: 1px solid var(--color-text);
}

.tool-item {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: baseline;
}
@media (min-width: 768px) {
  .tool-item { grid-template-columns: 80px 1fr auto; gap: var(--space-6); align-items: center; }
}

.tool-num {
  font-size: var(--text-h3);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
}

.tool-item h3 {
  font-size: var(--text-h3);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-1) 0;
}

.tool-item p {
  font-size: var(--text-body);
  color: var(--color-text-muted);
  margin: 0;
  max-width: 480px;
}

.tool-link {
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: transform 200ms ease;
  grid-column: 2;
  margin-top: var(--space-3);
}
@media (min-width: 768px) {
  .tool-link { grid-column: 3; margin-top: 0; }
  .tool-item:hover .tool-link { transform: translateX(3px); }
}

/* ============================================== */
/* 09 · FINAL CTA                                  */
/* ============================================== */
.section-cta {
  padding: var(--space-8) 0;
  background: var(--color-bg);
  color: var(--color-text);
  text-align: center;
  border-top: 1px solid var(--color-border);
}
@media (min-width: 768px) { .section-cta { padding: var(--space-9) 0; } }

.section-cta h2 { color: var(--color-text); margin-bottom: var(--space-3); }
.section-cta p { color: var(--color-text-muted); max-width: 560px; margin: 0 auto; }
.section-cta .btn-outline {
  color: var(--color-text);
  border-color: var(--color-text);
}
.section-cta .btn-outline:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.section-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-top: var(--space-6);
}

/* ============================================== */
/* MOBILE MENU                                     */
/* ============================================== */
.nav-mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-5) var(--space-4);
  flex-direction: column;
  gap: var(--space-3);
  z-index: 49;
  box-shadow: var(--shadow-2);
  max-height: calc(100vh - 64px);
  overflow-y: auto;
}
.nav-mobile-menu.is-open { display: flex; }
@media (min-width: 768px) {
  .nav-mobile-menu, .nav-mobile-menu.is-open { display: none !important; }
}
.nav-mobile-menu .nav-link {
  font-size: var(--text-body);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

/* ============================================== */
/* SKIP LINK (a11y)                                */
/* ============================================== */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-3);
  background: var(--color-dark);
  color: var(--color-text-inverted);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-small);
  font-weight: 600;
  z-index: 100;
  border-radius: var(--radius-1);
  transition: top 150ms ease;
}
.skip-link:focus { top: var(--space-3); }

/* ============================================== */
/* NUMBER TRANSITION (brief §26 micro-interactions)*/
/* ============================================== */
.calc-result-num,
.hero-pace-number,
.timeline-stop-time,
.calc-pace-secondary .num,
.hero-pace-secondary-item .num {
  transition: opacity 150ms ease;
}
.is-updating { opacity: 0.35; }

/* ============================================== */
/* PRINT (brief §16)                               */
/* ============================================== */
@media print {
  body { background: white; color: black; font-size: 12pt; }
  .nav, .no-print, footer, .calc-print, .hero-trust { display: none !important; }
  .hero, .calc, .timeline-section { padding: 0.5cm 0; background: white; color: black; }
  .hero-pace-panel { background: white; color: black; border: 1px solid black; }
  .calc-result { border: 1px solid black; background: white; }
  a { color: black; text-decoration: none; }
  .timeline::before { background: black; }
  .timeline-stop::before { background: black; border-color: black; }
}