/* ==========================================================================
   ALTA CADENCE (altacadence.info) — DESIGN SYSTEM & CORE STYLES
   Inspired by Swiss Precision Athletic Engineering & Minimalist Movement
   CSS Prefix: ac-*
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --ac-black: #0a0a0c;
  --ac-black-subtle: #141418;
  --ac-charcoal: #1c1c22;
  --ac-gray-900: #26262e;
  --ac-gray-700: #4a4a56;
  --ac-gray-500: #717182;
  --ac-gray-300: #b5b5c2;
  --ac-gray-100: #f0f0f4;
  --ac-gray-50: #f7f7fa;
  --ac-white: #ffffff;
  
  /* High-Performance Accent Colors */
  --ac-volt: #d4f932;
  --ac-volt-hover: #bde01a;
  --ac-swiss-red: #ff3823;
  --ac-cyan: #00e5ff;

  --ac-font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --ac-font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;

  --ac-transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --ac-transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --ac-radius-round: 9999px;
  --ac-radius-sm: 4px;
  --ac-radius-md: 8px;
  --ac-radius-lg: 16px;

  --ac-header-height: 72px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--ac-white);
  color: var(--ac-black);
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: var(--ac-font-sans);
  font-size: 1rem;
  line-height: 1.55;
  color: var(--ac-black);
  background-color: var(--ac-white);
  overflow-x: hidden;
  max-width: 100vw;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--ac-transition-fast), opacity var(--ac-transition-fast);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ac-font-display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.ac-h1 {
  font-size: clamp(1.85rem, 5.5vw, 4.75rem);
  font-weight: 700;
  letter-spacing: -0.035em;
}

.ac-h2 {
  font-size: clamp(2rem, 3.8vw, 3.25rem);
  letter-spacing: -0.03em;
}

.ac-h3 {
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  letter-spacing: -0.02em;
}

.ac-h4 {
  font-size: 1.25rem;
  letter-spacing: -0.015em;
}

.ac-lead {
  font-size: clamp(1.1rem, 1.4vw, 1.35rem);
  line-height: 1.6;
  color: var(--ac-gray-700);
  font-weight: 400;
}

.ac-micro-label {
  font-family: var(--ac-font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ac-gray-500);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.ac-micro-label::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--ac-volt);
}

.ac-micro-label.ac-micro-dark {
  color: var(--ac-gray-300);
}

.ac-micro-label.ac-micro-dark::before {
  background-color: var(--ac-volt);
}

/* ==========================================================================
   LAYOUT CONTAINERS & GRIDS
   ========================================================================== */

.ac-container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding-left: clamp(1.25rem, 4vw, 3.5rem);
  padding-right: clamp(1.25rem, 4vw, 3.5rem);
}

.ac-container-wide {
  width: 100%;
  max-width: 1680px;
  margin: 0 auto;
  padding-left: clamp(1rem, 3vw, 2.5rem);
  padding-right: clamp(1rem, 3vw, 2.5rem);
}

.ac-container-full {
  width: 100%;
  padding: 0;
}

.ac-section {
  padding-top: clamp(4.5rem, 8vw, 8.5rem);
  padding-bottom: clamp(4.5rem, 8vw, 8.5rem);
  position: relative;
}

.ac-section-compact {
  padding-top: clamp(3rem, 5vw, 5rem);
  padding-bottom: clamp(3rem, 5vw, 5rem);
}

.ac-bg-dark {
  background-color: var(--ac-black);
  color: var(--ac-white);
}

.ac-bg-charcoal {
  background-color: var(--ac-charcoal);
  color: var(--ac-white);
}

.ac-bg-subtle {
  background-color: var(--ac-gray-50);
  color: var(--ac-black);
}

/* ==========================================================================
   BUTTONS (ON-RUNNING STYLE MINIMALIST ACTION CONTROLS)
   ========================================================================== */

.ac-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.85rem 2rem;
  min-height: 48px;
  border-radius: var(--ac-radius-round);
  font-family: var(--ac-font-display);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--ac-transition-smooth);
  border: 1px solid transparent;
  white-space: nowrap;
}

.ac-btn-volt {
  background-color: var(--ac-volt);
  color: var(--ac-black);
  border-color: var(--ac-volt);
}

.ac-btn-volt:hover {
  background-color: var(--ac-volt-hover);
  border-color: var(--ac-volt-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(212, 249, 50, 0.25);
}

.ac-btn-white {
  background-color: var(--ac-white);
  color: var(--ac-black);
  border-color: var(--ac-white);
}

.ac-btn-white:hover {
  background-color: var(--ac-gray-100);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 255, 255, 0.15);
}

.ac-btn-black {
  background-color: var(--ac-black);
  color: var(--ac-white);
  border-color: var(--ac-black);
}

.ac-btn-black:hover {
  background-color: var(--ac-charcoal);
  border-color: var(--ac-charcoal);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.ac-btn-outline-white {
  background-color: transparent;
  color: var(--ac-white);
  border-color: rgba(255, 255, 255, 0.35);
}

.ac-btn-outline-white:hover {
  background-color: var(--ac-white);
  color: var(--ac-black);
  border-color: var(--ac-white);
}

.ac-btn-outline-dark {
  background-color: transparent;
  color: var(--ac-black);
  border-color: rgba(10, 10, 12, 0.25);
}

.ac-btn-outline-dark:hover {
  background-color: var(--ac-black);
  color: var(--ac-white);
  border-color: var(--ac-black);
}

.ac-btn-arrow svg {
  width: 14px;
  height: 14px;
  transition: transform var(--ac-transition-fast);
}

.ac-btn:hover .ac-btn-arrow svg {
  transform: translateX(4px);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.ac-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--ac-header-height);
  z-index: 1000;
  background-color: rgba(10, 10, 12, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background-color var(--ac-transition-smooth), border-color var(--ac-transition-smooth);
}

.ac-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.ac-brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--ac-font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ac-white);
  text-transform: uppercase;
}

.ac-brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--ac-volt);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.ac-brand-mark::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--ac-volt);
}

.ac-nav-desktop {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.ac-nav-link {
  font-family: var(--ac-font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ac-gray-300);
  position: relative;
  padding: 0.5rem 0;
}

.ac-nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--ac-volt);
  transition: width var(--ac-transition-smooth);
}

.ac-nav-link:hover {
  color: var(--ac-white);
}

.ac-nav-link:hover::after,
.ac-nav-link.ac-active::after {
  width: 100%;
}

.ac-nav-link.ac-active {
  color: var(--ac-white);
}

.ac-header-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.ac-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--ac-white);
  cursor: pointer;
  padding: 8px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.ac-nav-toggle svg {
  width: 24px;
  height: 24px;
  stroke: var(--ac-white);
  display: block;
  transition: transform var(--ac-transition-fast);
}

.ac-nav-toggle.ac-open svg {
  transform: rotate(90deg);
}

/* Mobile Nav Overlay */
.ac-mobile-menu {
  display: none;
  position: fixed;
  top: var(--ac-header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--ac-header-height));
  background-color: var(--ac-black);
  z-index: 999;
  padding: 2.5rem 1.5rem;
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.ac-mobile-menu.ac-menu-active {
  display: flex;
}

.ac-mobile-links {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.ac-mobile-link {
  font-family: var(--ac-font-display);
  font-size: 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--ac-white);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ac-mobile-link.ac-active {
  color: var(--ac-volt);
}

/* ==========================================================================
   HERO SECTION (ON-RUNNING INSPIRED: FULL WIDTH 85-95vh)
   ========================================================================== */

.ac-hero-lifestyle {
  position: relative;
  width: 100%;
  min-height: 90vh;
  display: flex;
  align-items: flex-end;
  padding-bottom: clamp(3.5rem, 7vw, 6.5rem);
  padding-top: calc(var(--ac-header-height) + 2rem);
  overflow: hidden;
  background-color: var(--ac-black);
  color: var(--ac-white);
}

.ac-hero-media {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.ac-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  filter: brightness(0.82) contrast(1.08);
}

.ac-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 12, 0.45) 0%,
    rgba(10, 10, 12, 0.2) 40%,
    rgba(10, 10, 12, 0.85) 90%,
    rgba(10, 10, 12, 0.95) 100%
  );
}

.ac-hero-content {
  position: relative;
  z-index: 3;
  width: 100%;
}

.ac-hero-badge-row {
  margin-bottom: 1.25rem;
}

.ac-hero-title {
  max-width: 950px;
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.ac-hero-subtitle {
  max-width: 620px;
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 2.25rem;
  font-weight: 400;
}

.ac-hero-cta-wrap {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.ac-hero-bottom-ticker {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  max-width: 100%;
  height: 38px;
  background: rgba(10, 10, 12, 0.7);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 4;
  display: flex;
  align-items: center;
  overflow: hidden;
  contain: paint;
  font-family: var(--ac-font-display);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ac-gray-300);
}

.ac-ticker-track {
  display: flex;
  gap: 3rem;
  white-space: nowrap;
  width: max-content;
  animation: acTicker 30s linear infinite;
}

@keyframes acTicker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ==========================================================================
   HOMEPAGE VISUAL RHYTHM SECTIONS
   ========================================================================== */

/* 1. EDITORIAL STATEMENT BLOCK (ASYMMETRIC) */
.ac-statement-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.ac-statement-lead {
  font-family: var(--ac-font-display);
  font-size: clamp(1.75rem, 3.2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  text-transform: uppercase;
}

.ac-statement-lead span {
  color: var(--ac-gray-500);
}

.ac-statement-copy {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.ac-statement-copy p {
  color: var(--ac-gray-700);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* 2. STRIDE HORIZONTAL SHOWCASE (FULL-WIDTH 4 STRIDE PHASES) */
.ac-phases-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5px;
  background-color: var(--ac-gray-900);
  margin-top: 3.5rem;
  border: 1px solid var(--ac-gray-900);
}

.ac-phase-cell {
  background-color: var(--ac-black-subtle);
  padding: clamp(2rem, 3vw, 3rem) clamp(1.5rem, 2vw, 2.25rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 320px;
  transition: background-color var(--ac-transition-smooth);
  position: relative;
  overflow: hidden;
}

.ac-phase-cell:hover {
  background-color: var(--ac-charcoal);
}

.ac-phase-cell::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--ac-volt);
  opacity: 0;
  transition: opacity var(--ac-transition-fast);
}

.ac-phase-cell:hover::after {
  opacity: 1;
}

.ac-phase-num {
  font-family: var(--ac-font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ac-volt);
}

.ac-phase-title {
  font-family: var(--ac-font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ac-white);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.ac-phase-desc {
  font-size: 0.92rem;
  color: var(--ac-gray-300);
  line-height: 1.55;
}

.ac-phase-metric {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--ac-font-display);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ac-gray-500);
}

.ac-phase-metric strong {
  display: block;
  font-size: 1.15rem;
  color: var(--ac-white);
  margin-top: 0.25rem;
}

/* 3. INTERACTIVE MODULE: KINETIC CADENCE & RHYTHM ENGINE */
.ac-engine-wrapper {
  background-color: var(--ac-black);
  border-radius: var(--ac-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: clamp(2rem, 4vw, 4rem);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
  position: relative;
  overflow: hidden;
}

.ac-engine-wrapper::before {
  content: "";
  position: absolute;
  top: -150px;
  right: -150px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 249, 50, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.ac-engine-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 2rem;
}

.ac-engine-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: center;
  min-width: 0;
}

.ac-engine-controls {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
  min-width: 0;
  width: 100%;
  max-width: 100%;
}

.ac-slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
  width: 100%;
  max-width: 100%;
}

.ac-slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ac-slider-label {
  font-family: var(--ac-font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ac-gray-300);
}

.ac-slider-val {
  font-family: var(--ac-font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ac-volt);
}

.ac-range-input {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--ac-gray-900);
  outline: none;
  cursor: pointer;
}

.ac-range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--ac-volt);
  cursor: pointer;
  box-shadow: 0 0 12px rgba(212, 249, 50, 0.6);
  transition: transform 0.15s ease;
}

.ac-range-input::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.ac-range-input::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--ac-volt);
  cursor: pointer;
  border: none;
}

/* Engine Gauge / Readout Side */
.ac-engine-readout {
  background-color: var(--ac-black-subtle);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--ac-radius-md);
  padding: clamp(2rem, 3vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
}

.ac-cadence-meter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--ac-charcoal);
  padding: 1.25rem 1.5rem;
  border-radius: var(--ac-radius-sm);
  border-left: 4px solid var(--ac-volt);
}

.ac-meter-val {
  font-family: var(--ac-font-display);
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1;
  color: var(--ac-white);
}

.ac-meter-unit {
  font-family: var(--ac-font-display);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ac-volt);
  margin-top: 0.25rem;
}

.ac-engine-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.ac-metric-box {
  background: var(--ac-charcoal);
  padding: 1rem 1.25rem;
  border-radius: var(--ac-radius-sm);
}

.ac-metric-box-label {
  font-family: var(--ac-font-display);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ac-gray-500);
}

.ac-metric-box-val {
  font-family: var(--ac-font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ac-white);
  margin-top: 0.25rem;
}

.ac-engine-feedback {
  padding: 1rem 1.25rem;
  border-radius: var(--ac-radius-sm);
  background: rgba(212, 249, 50, 0.08);
  border: 1px solid rgba(212, 249, 50, 0.2);
  color: var(--ac-white);
  font-size: 0.88rem;
  line-height: 1.5;
}

.ac-engine-feedback strong {
  color: var(--ac-volt);
  display: block;
  font-family: var(--ac-font-display);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

/* 4. TECHNICAL SPECIFICATION SHOWCASE (EDITORIAL) */
.ac-spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
  margin-top: 3rem;
}

.ac-spec-card {
  background-color: var(--ac-gray-50);
  border: 1px solid var(--ac-gray-100);
  border-radius: var(--ac-radius-md);
  overflow: hidden;
  transition: transform var(--ac-transition-smooth), box-shadow var(--ac-transition-smooth);
  display: flex;
  flex-direction: column;
}

.ac-spec-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.06);
}

.ac-spec-media {
  width: 100%;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  position: relative;
  background-color: var(--ac-black);
}

.ac-spec-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--ac-transition-smooth);
}

.ac-spec-card:hover .ac-spec-media img {
  transform: scale(1.04);
}

.ac-spec-tag {
  position: absolute;
  top: 1.25rem;
  left: 1.25rem;
  background: rgba(10, 10, 12, 0.8);
  backdrop-filter: blur(8px);
  color: var(--ac-white);
  padding: 0.35rem 0.75rem;
  border-radius: var(--ac-radius-round);
  font-family: var(--ac-font-display);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.ac-spec-body {
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.ac-spec-header-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.5rem;
}

.ac-spec-title {
  font-size: 1.4rem;
  font-weight: 700;
}

.ac-spec-code {
  font-family: var(--ac-font-display);
  font-size: 0.75rem;
  color: var(--ac-gray-500);
  letter-spacing: 0.05em;
}

.ac-spec-desc {
  font-size: 0.95rem;
  color: var(--ac-gray-700);
  line-height: 1.6;
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.ac-spec-meta-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--ac-gray-100);
  margin-bottom: 1.5rem;
  font-size: 0.82rem;
}

.ac-spec-meta-item {
  color: var(--ac-gray-500);
}

.ac-spec-meta-item strong {
  display: block;
  color: var(--ac-black);
  font-family: var(--ac-font-display);
  font-weight: 600;
  font-size: 0.92rem;
}

/* 5. CINEMATIC FULL-BLEED MOVEMENT SHOWCASE */
.ac-cinematic-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 650px;
}

.ac-cinematic-img-wrap {
  position: relative;
  overflow: hidden;
  background-color: var(--ac-black);
}

.ac-cinematic-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.9);
}

.ac-cinematic-text-wrap {
  background-color: var(--ac-black);
  color: var(--ac-white);
  padding: clamp(3rem, 6vw, 6rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.ac-quote-block {
  font-family: var(--ac-font-display);
  font-size: clamp(1.4rem, 2.5vw, 2.15rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
  position: relative;
}

.ac-quote-author {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.ac-author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--ac-volt);
  flex-shrink: 0;
}

.ac-author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ac-author-info {
  display: flex;
  flex-direction: column;
}

.ac-author-name {
  font-family: var(--ac-font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--ac-white);
  text-transform: uppercase;
}

.ac-author-title {
  font-size: 0.82rem;
  color: var(--ac-gray-300);
}

/* ==========================================================================
   TEAM & ATHLETE CARDS (DISTINCT UNIQUE WEBP PORTRAITS)
   ========================================================================== */

.ac-team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
  margin-top: 3.5rem;
}

.ac-person-card {
  background-color: var(--ac-white);
  border: 1px solid var(--ac-gray-100);
  border-radius: var(--ac-radius-md);
  overflow: hidden;
  transition: transform var(--ac-transition-smooth), box-shadow var(--ac-transition-smooth);
}

.ac-person-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.ac-person-media {
  width: 100%;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background-color: var(--ac-gray-100);
  position: relative;
}

.ac-person-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--ac-transition-smooth);
}

.ac-person-card:hover .ac-person-media img {
  transform: scale(1.03);
}

.ac-person-body {
  padding: 1.75rem 1.5rem;
}

.ac-person-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.ac-person-role {
  font-family: var(--ac-font-display);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ac-gray-500);
  margin-bottom: 1rem;
  display: block;
}

.ac-person-bio {
  font-size: 0.92rem;
  color: var(--ac-gray-700);
  line-height: 1.6;
}

.ac-person-stat {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ac-gray-100);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-family: var(--ac-font-display);
  color: var(--ac-gray-500);
}

.ac-person-stat strong {
  color: var(--ac-black);
}

/* ==========================================================================
   FORMS & INQUIRY MODULES (HONEYPOT PROTECTED)
   ========================================================================== */

.ac-form-box {
  background-color: var(--ac-white);
  border: 1px solid var(--ac-gray-100);
  border-radius: var(--ac-radius-lg);
  padding: clamp(2rem, 4vw, 3.5rem);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.05);
}

.ac-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.ac-form-full {
  grid-column: 1 / -1;
}

.ac-form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ac-form-label {
  font-family: var(--ac-font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ac-gray-700);
}

.ac-form-input,
.ac-form-select,
.ac-form-textarea {
  width: 100%;
  padding: 0.95rem 1.25rem;
  min-height: 48px;
  background-color: var(--ac-gray-50);
  border: 1px solid var(--ac-gray-300);
  border-radius: var(--ac-radius-sm);
  color: var(--ac-black);
  font-size: 0.95rem;
  transition: border-color var(--ac-transition-fast), background-color var(--ac-transition-fast);
  outline: none;
}

.ac-form-input:focus,
.ac-form-select:focus,
.ac-form-textarea:focus {
  border-color: var(--ac-black);
  background-color: var(--ac-white);
}

.ac-form-textarea {
  min-height: 130px;
  resize: vertical;
}

/* Invisible honeypot for spam bots */
.ac-hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  opacity: 0;
  pointer-events: none;
}

/* ==========================================================================
   FOOTER (VERIFIED ENTITY SYNC & CLEAN ON-RUNNING MINIMALISM)
   ========================================================================== */

.ac-footer {
  background-color: var(--ac-black);
  color: var(--ac-white);
  padding-top: clamp(4.5rem, 7vw, 7rem);
  padding-bottom: 3.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: auto;
}

.ac-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: clamp(2rem, 4vw, 4.5rem);
  margin-bottom: 4rem;
}

.ac-footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.ac-footer-operator {
  font-size: 0.88rem;
  color: var(--ac-gray-300);
  line-height: 1.6;
  max-width: 320px;
}

.ac-footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ac-footer-heading {
  font-family: var(--ac-font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ac-gray-500);
  margin-bottom: 0.5rem;
}

.ac-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.ac-footer-link {
  font-size: 0.9rem;
  color: var(--ac-gray-300);
  transition: color var(--ac-transition-fast);
}

.ac-footer-link:hover {
  color: var(--ac-volt);
}

.ac-footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1rem;
  font-size: 0.88rem;
  color: var(--ac-gray-300);
}

.ac-footer-contact-item strong {
  font-family: var(--ac-font-display);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ac-gray-500);
}

.ac-footer-contact-item a {
  color: var(--ac-white);
}

.ac-footer-contact-item a:hover {
  color: var(--ac-volt);
}

.ac-footer-bottom {
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.82rem;
  color: var(--ac-gray-500);
}

.ac-footer-legal-links {
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
}

.ac-footer-legal-links a {
  color: var(--ac-gray-300);
}

.ac-footer-legal-links a:hover {
  color: var(--ac-white);
}

/* ==========================================================================
   COOKIE CONSENT BANNER (VANILLA JS, LOCALSTORAGE, GDPR)
   ========================================================================== */

.ac-cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  max-width: 440px;
  background-color: var(--ac-black);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--ac-radius-md);
  padding: 1.5rem;
  z-index: 9999;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
  display: none;
  color: var(--ac-white);
}

.ac-cookie-banner.ac-cookie-visible {
  display: block;
}

.ac-cookie-text {
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--ac-gray-300);
  margin-bottom: 1.25rem;
}

.ac-cookie-text a {
  color: var(--ac-white);
  text-decoration: underline;
}

.ac-cookie-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.ac-cookie-btn {
  padding: 0.55rem 1.25rem;
  border-radius: var(--ac-radius-round);
  font-family: var(--ac-font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid transparent;
  min-height: 44px;
}

.ac-cookie-btn-accept {
  background-color: var(--ac-volt);
  color: var(--ac-black);
}

.ac-cookie-btn-customize {
  background-color: transparent;
  color: var(--ac-white);
  border-color: rgba(255, 255, 255, 0.3);
}

/* ==========================================================================
   RESPONSIVE DESIGN (DESKTOP 1440PX & MOBILE 390PX)
   ========================================================================== */

@media (max-width: 1100px) {
  .ac-footer-grid {
    grid-template-columns: 1fr 1fr;
    row-gap: 3rem;
  }
  .ac-phases-strip {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .ac-nav-desktop,
  .ac-header-actions .ac-btn {
    display: none;
  }
  .ac-nav-toggle {
    display: flex;
  }
  .ac-statement-grid {
    grid-template-columns: 1fr;
  }
  .ac-engine-grid {
    grid-template-columns: 1fr;
  }
  .ac-spec-grid {
    grid-template-columns: 1fr;
  }
  .ac-cinematic-split {
    grid-template-columns: 1fr;
  }
  .ac-team-grid {
    grid-template-columns: 1fr;
  }
  .ac-form-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  :root {
    --ac-header-height: 64px;
  }
  .ac-container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .ac-h1 {
    font-size: 2.1rem;
    line-height: 1.05;
  }
  .ac-h2 {
    font-size: 1.65rem;
    line-height: 1.1;
  }
  .ac-hero-title {
    font-size: 2.15rem;
  }
  .ac-engine-wrapper {
    padding: 1.5rem 1rem;
    border-radius: var(--ac-radius-md);
  }
  .ac-engine-metrics {
    grid-template-columns: 1fr;
  }
  .ac-cadence-meter {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  .ac-phases-strip {
    grid-template-columns: 1fr;
  }
  .ac-footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .ac-footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .ac-cookie-banner {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
    max-width: none;
  }
}