:root {
    --black: #060606;
    --white: #F5F5F2;
    --sage: #8BA898;
    --sage-light: #D8EAE0;
    --gray-dark: #1A1A1A;
    --gray-mid: #2A2A2A;
    --gray-text: #6B6B6B;
    --green-accent: #4ADE80;
    --red-accent: #F87171;
    --amber-accent: #F97316;
    --blue-accent: #3B82F6;
    --mono: 'DM Mono', monospace;
    --display: 'Bebas Neue', sans-serif;
    --body: 'Barlow', sans-serif;
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--black);
    color: var(--white);
    font-family: var(--body);
    overflow-x: hidden;
    cursor: default;
  }

  /* ─── NOISE OVERLAY ─── */
  body::before {
    content: '';
    position: fixed; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none; z-index: 9999; opacity: 0.35;
  }

  /* ─── SCROLLBAR ─── */
  ::-webkit-scrollbar { width: 4px; }
  ::-webkit-scrollbar-track { background: var(--black); }
  ::-webkit-scrollbar-thumb { background: var(--sage); border-radius: 2px; }

  /* ─── NAV ─── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 48px;
    background: linear-gradient(to bottom, rgba(6,6,6,0.95) 0%, transparent 100%);
    backdrop-filter: blur(0px);
    transition: backdrop-filter 0.3s, background 0.3s;
  }
  nav.scrolled {
    background: rgba(6,6,6,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(139,168,152,0.12);
  }
  .nav-logo {
    display: flex; align-items: center; gap: 12px; text-decoration: none;
  }
  .brand-mark {
    display: block; width: auto; height: auto; flex-shrink: 0;
  }
  .brand-mark--nav { width: 36px; }
  .brand-mark--footer { width: 28px; opacity: 0.4; }
  .brand-mark--modal { width: 26px; }
  .nav-logo-text {
    font-family: var(--body); font-weight: 600; font-style: italic;
    font-size: 22px; letter-spacing: 2px; color: var(--white);
  }
  .nav-links {
    display: flex; align-items: center; gap: 36px; list-style: none;
  }
  .nav-links a {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em;
    color: rgba(245,245,242,0.55); text-decoration: none; text-transform: uppercase;
    transition: color 0.2s;
  }
  .nav-links a:hover { color: var(--white); }
  .nav-cta {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--black) !important;
    background: var(--sage); padding: 10px 20px; border-radius: 2px;
    text-decoration: none; transition: background 0.2s, transform 0.1s;
  }
  .nav-cta:hover { background: var(--white) !important; transform: translateY(-1px); }

  /* ─── HERO ─── */
  #hero {
    min-height: 100vh; display: flex; flex-direction: column;
    justify-content: flex-end; padding: 0 48px 80px;
    position: relative; overflow: hidden;
  }

  .hero-bg-lines {
    position: absolute; inset: 0; overflow: hidden; pointer-events: none;
  }
  .hero-bg-logo {
    position: absolute; right: -5%; top: 2%;
    width: 65vw; height: auto; opacity: 0.6;
    animation: float 12s ease-in-out infinite;
  }
  @keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(0.5deg); }
  }

  .hero-tag {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
    color: var(--sage); text-transform: uppercase; margin-bottom: 24px;
    opacity: 0; animation: fadeUp 0.8s ease 0.2s forwards;
  }
  .hero-tag::before { content: '// '; }

  .hero-headline {
    font-family: var(--display); font-size: clamp(72px, 10vw, 148px);
    line-height: 0.9; letter-spacing: 0.02em; color: var(--white);
    margin-bottom: 32px;
    opacity: 0; animation: fadeUp 0.8s ease 0.4s forwards;
  }
  .hero-headline em {
    font-style: normal; color: var(--sage);
    -webkit-text-stroke: 1px var(--sage);
  }

  .hero-sub {
    font-family: var(--body); font-weight: 300; font-size: 16px;
    line-height: 1.7; color: rgba(245,245,242,0.55); max-width: 480px;
    margin-bottom: 48px;
    opacity: 0; animation: fadeUp 0.8s ease 0.6s forwards;
  }

  .hero-actions {
    display: flex; align-items: center; gap: 24px;
    opacity: 0; animation: fadeUp 0.8s ease 0.8s forwards;
  }
  .btn-primary {
    font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--black);
    background: var(--sage); padding: 16px 36px;
    text-decoration: none; border-radius: 2px;
    transition: background 0.2s, transform 0.15s;
    display: inline-block;
  }
  .btn-primary:hover { background: var(--sage-light); transform: translateY(-2px); }
  .btn-ghost {
    font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em;
    text-transform: uppercase; color: rgba(245,245,242,0.6);
    text-decoration: none; display: flex; align-items: center; gap: 8px;
    transition: color 0.2s;
  }
  .btn-ghost:hover { color: var(--white); }
  .btn-ghost::after { content: '→'; transition: transform 0.2s; }
  .btn-ghost:hover::after { transform: translateX(4px); }

  .hero-stats {
    position: absolute; right: 48px; bottom: 80px;
    display: flex; gap: 48px;
    opacity: 0; animation: fadeUp 0.8s ease 1s forwards;
  }
  .hero-stat { text-align: right; }
  .hero-stat-val {
    font-family: var(--display); font-size: 44px; letter-spacing: 0.03em;
    color: var(--white); line-height: 1;
  }
  .hero-stat-label {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--sage); margin-top: 4px;
  }

  .hero-scroll-hint {
    position: absolute; left: 48px; bottom: 48px;
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.15em;
    color: rgba(245,245,242,0.3); text-transform: uppercase;
    display: flex; align-items: center; gap: 12px;
    writing-mode: vertical-rl;
    opacity: 0; animation: fadeUp 0.8s ease 1.2s forwards;
  }
  .hero-scroll-hint::before {
    content: ''; display: block; width: 1px; height: 40px;
    background: linear-gradient(to bottom, transparent, var(--sage));
  }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* ─── MARQUEE ─── */
  .marquee-section {
    border-top: 1px solid rgba(139,168,152,0.15);
    border-bottom: 1px solid rgba(139,168,152,0.15);
    overflow: hidden; padding: 16px 0;
    background: var(--gray-dark);
  }
  .marquee-track {
    display: flex; gap: 0; white-space: nowrap;
    animation: marquee 22s linear infinite;
  }
  .marquee-track:hover { animation-play-state: paused; }
  @keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
  }
  .marquee-item {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
    text-transform: uppercase; color: rgba(245,245,242,0.35);
    padding: 0 32px; display: inline-flex; align-items: center; gap: 32px;
  }
  .marquee-item::after {
    content: '◆'; color: var(--sage); font-size: 7px;
  }

  /* ─── SECTION COMMONS ─── */
  section { padding: 120px 48px; }

  .section-eyebrow {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
    text-transform: uppercase; color: var(--sage); margin-bottom: 16px;
  }
  .section-eyebrow::before { content: '01 — '; }
  .section-eyebrow.s2::before { content: '02 — '; }
  .section-eyebrow.s3::before { content: '03 — '; }
  .section-eyebrow.s4::before { content: '04 — '; }
  .section-eyebrow.s5::before { content: '05 — '; }

  .section-title {
    font-family: var(--display); font-size: clamp(48px, 6vw, 88px);
    letter-spacing: 0.03em; line-height: 0.95; margin-bottom: 24px;
  }
  .section-body {
    font-family: var(--body); font-weight: 300; font-size: 15px;
    line-height: 1.8; color: rgba(245,245,242,0.55); max-width: 520px;
  }

  /* ─── INTRO SPLIT ─── */
  #intro {
    display: grid; grid-template-columns: 1fr 1fr; gap: 96px;
    align-items: center; padding: 120px 48px;
  }
  .intro-right { position: relative; }
  .intro-card {
    background: var(--gray-dark);
    border: 1px solid rgba(139,168,152,0.15);
    border-radius: 4px; padding: 32px;
    position: relative; overflow: hidden;
  }
  .intro-card::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(139,168,152,0.06) 0%, transparent 60%);
    pointer-events: none;
  }
  .telemetry-mockup {
    display: flex; flex-direction: column; gap: 16px;
  }
  .telem-row {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  }
  .telem-stat {
    position: relative;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(139,168,152,0.12); border-radius: 3px;
    padding: 14px 16px;
  }
  .telem-stat-label {
    font-family: var(--mono); font-size: 9px; letter-spacing: 0.15em;
    text-transform: uppercase; color: var(--sage); margin-bottom: 6px;
  }
  .telem-stat-val {
    font-family: var(--display); font-size: 28px; letter-spacing: 0.02em; color: var(--white);
  }
  .telem-stat-delta {
    font-family: var(--mono); font-size: 10px; color: var(--green-accent); margin-top: 2px;
  }
  .telem-stat-delta.bad { color: var(--red-accent); }
  .telem-stat-delta.muted {
    color: var(--gray-text); white-space: nowrap;
    overflow: hidden; text-overflow: ellipsis;
  }
  .telem-stat-icon {
    position: absolute; top: 12px; right: 12px;
    width: 15px; height: 15px;
  }
  .telem-stat-icon.sage { color: var(--sage); }
  .telem-stat-icon.green { color: var(--green-accent); }
  .telem-stat-icon.amber { color: var(--amber-accent); }

  /* Dashboard replica topbar */
  .dash-topbar {
    display: flex; align-items: flex-start; justify-content: space-between;
    gap: 12px; padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .dash-title {
    font-family: var(--display); font-size: 22px; letter-spacing: 0.04em; color: var(--white);
  }
  .dash-welcome {
    font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em;
    color: var(--gray-text); margin-top: 2px;
  }
  .dash-chips { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
  .dash-chip {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em;
    color: rgba(245,245,242,0.65);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08); border-radius: 6px;
    padding: 5px 10px; white-space: nowrap;
  }
  .telem-chart-area {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(139,168,152,0.1); border-radius: 3px;
    padding: 16px; height: 120px; position: relative; overflow: hidden;
  }
  .telem-chart-area.tall { height: 160px; }
  .chart-label {
    font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--sage); margin-bottom: 8px;
  }
  .chart-svg { width: 100%; height: 80px; }
  .telem-chart-area.tall .chart-svg { height: 118px; }

  /* Dashboard replica explore nav chips */
  .dash-nav-row { display: flex; gap: 8px; flex-wrap: wrap; }
  .dash-nav-chip {
    flex: 1 1 auto; text-align: center;
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em;
    color: rgba(245,245,242,0.7);
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.07); border-radius: 6px;
    padding: 9px 8px; white-space: nowrap;
    border-left-width: 2px;
  }
  .dash-nav-chip.amber { border-left-color: var(--amber-accent); }
  .dash-nav-chip.red { border-left-color: var(--red-accent); }
  .dash-nav-chip.green { border-left-color: var(--green-accent); }
  .dash-nav-chip.sage { border-left-color: var(--sage); }

  /* ─── FEATURES GRID ─── */
  #features { padding: 120px 48px; }
  .features-header {
    display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
    align-items: end; margin-bottom: 80px;
  }
  .features-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px;
  }
  .feature-card {
    background: var(--gray-dark); padding: 40px 36px;
    border: 1px solid rgba(139,168,152,0.08);
    position: relative; overflow: hidden;
    transition: background 0.3s, border-color 0.3s;
    cursor: default;
  }
  .feature-card:hover {
    background: rgba(139,168,152,0.07);
    border-color: rgba(139,168,152,0.3);
  }
  .feature-card:hover .feature-icon { color: var(--white); }
  .feature-number {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.15em;
    color: rgba(139,168,152,0.4); margin-bottom: 24px;
  }
  .feature-icon {
    width: 40px; height: 40px; color: var(--sage);
    margin-bottom: 20px; transition: color 0.3s;
  }
  .feature-icon svg { width: 100%; height: 100%; }
  .feature-name {
    font-family: var(--body); font-weight: 600; font-size: 15px;
    letter-spacing: 0.04em; text-transform: uppercase; color: var(--white);
    margin-bottom: 12px;
  }
  .feature-desc {
    font-family: var(--body); font-weight: 300; font-size: 13px;
    line-height: 1.7; color: rgba(245,245,242,0.45);
  }
  .feature-card.featured {
    background: rgba(139,168,152,0.08);
    border-color: rgba(139,168,152,0.25);
    grid-column: span 2;
  }
  .feature-card.featured .feature-name { font-size: 18px; }
  .feature-card.featured .feature-desc { max-width: 480px; font-size: 14px; }

  /* ─── TRACK SECTION ─── */
  #track {
    padding: 120px 48px;
    background: radial-gradient(ellipse at 70% 50%, rgba(139,168,152,0.06) 0%, transparent 60%);
  }
  .track-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
  .track-visual {
    position: relative;
    background: var(--gray-dark);
    border: 1px solid rgba(139,168,152,0.15);
    border-radius: 4px; overflow: hidden;
    padding: 24px;
  }
  .track-visual::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(139,168,152,0.06) 0%, transparent 55%);
    pointer-events: none; z-index: 0;
  }

  .heatmap-mockup {
    position: relative; z-index: 1;
    display: flex; flex-direction: column; gap: 12px;
  }
  .hm-tabs {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
    max-width: 280px;
    background: rgba(0,0,0,0.35);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px; padding: 3px;
  }
  .hm-tab {
    font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em;
    text-transform: uppercase; text-align: center;
    color: rgba(245,245,242,0.4);
    padding: 8px 10px; border-radius: 6px;
    background: transparent; border: 1px solid transparent;
    cursor: pointer;
    transition: color 0.2s, background 0.2s, border-color 0.2s;
  }
  .hm-tab.active {
    color: var(--white);
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.1);
  }
  .hm-filters { display: flex; gap: 8px; flex-wrap: wrap; }
  .hm-chip {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em;
    color: rgba(245,245,242,0.65);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08); border-radius: 6px;
    padding: 6px 12px; white-space: nowrap;
  }
  .hm-chip span { opacity: 0.45; margin-left: 4px; }

  .hm-canvas {
    position: relative;
    background: #0D0D0D;
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 946 / 619;
  }
  .hm-canvas-img {
    width: 100%; height: 100%; display: block;
    object-fit: cover; object-position: center;
  }

  .track-info { display: flex; flex-direction: column; gap: 40px; }
  .track-info-item {
    border-left: 2px solid rgba(139,168,152,0.3); padding-left: 24px;
  }
  .track-info-title {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.15em;
    text-transform: uppercase; color: var(--sage); margin-bottom: 8px;
  }
  .track-info-text {
    font-family: var(--body); font-weight: 300; font-size: 14px;
    line-height: 1.7; color: rgba(245,245,242,0.6);
  }

  /* ─── ANALYSIS SECTION ─── */
  #analysis { padding: 120px 48px; }
  .analysis-layout { display: grid; grid-template-columns: 1fr 1.6fr; gap: 80px; align-items: start; }
  .lap-table {
    background: var(--gray-dark);
    border: 1px solid rgba(139,168,152,0.12); border-radius: 4px;
    overflow: hidden;
  }
  .lap-table-header {
    display: grid; grid-template-columns: 34px 84px 1fr 1fr 1fr 1fr 60px;
    padding: 12px 18px; border-bottom: 1px solid rgba(139,168,152,0.12);
    background: rgba(139,168,152,0.06);
  }
  .lap-col-label {
    font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em;
    text-transform: uppercase; color: rgba(139,168,152,0.6);
  }
  .lap-row {
    display: grid; grid-template-columns: 34px 84px 1fr 1fr 1fr 1fr 60px;
    padding: 11px 18px; border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: background 0.15s;
  }
  .lap-row:hover { background: rgba(139,168,152,0.05); }
  .lap-row.best {
    background: rgba(139,168,152,0.08);
    border-left: 2px solid var(--sage);
  }
  .lap-cell {
    font-family: var(--mono); font-size: 11px; color: rgba(245,245,242,0.7);
    display: flex; align-items: center;
  }
  .lap-cell.best-time { color: var(--sage-light); }
  .delta-pos { color: var(--red-accent); }
  .delta-zero { color: var(--sage); }

  /* Telemetry summary tiles (mirrors dashboard telemetry tab) */
  .tele-summary {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
    margin-bottom: 24px;
  }
  .tele-tile {
    text-align: center; padding: 10px 6px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06); border-radius: 8px;
  }
  .tele-tile-label {
    font-family: var(--mono); font-size: 8px; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--gray-text); margin-bottom: 4px;
  }
  .tele-tile-val {
    font-family: var(--mono); font-size: 13px; color: var(--white);
  }
  .tele-tile-val.sage { color: var(--sage); }

  /* Speed chart in analysis */
  .speed-chart {
    background: var(--gray-dark);
    border: 1px solid rgba(139,168,152,0.12); border-radius: 4px;
    padding: 28px;
  }
  .speed-chart-title {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.15em;
    text-transform: uppercase; color: var(--sage); margin-bottom: 8px;
  }
  .speed-chart-title.amber { color: var(--amber-accent); }
  .speed-chart-stats {
    display: flex; gap: 32px; margin-bottom: 24px;
  }
  .sc-stat-val {
    font-family: var(--display); font-size: 32px; color: var(--white);
  }
  .sc-stat-label {
    font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em;
    text-transform: uppercase; color: rgba(245,245,242,0.35); margin-top: 2px;
  }

  /* ─── SESSIONS / UPLOAD ─── */
  #sessions { padding: 120px 48px; }
  .sessions-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
  .upload-zone {
    background: var(--gray-dark);
    border: 1px dashed rgba(139,168,152,0.35); border-radius: 4px;
    padding: 48px; text-align: center;
    transition: border-color 0.3s, background 0.3s;
    cursor: pointer;
  }
  .upload-zone:hover {
    border-color: rgba(139,168,152,0.7);
    background: rgba(139,168,152,0.05);
  }
  .upload-icon {
    width: 48px; height: 48px; color: var(--sage); margin: 0 auto 20px;
  }
  .upload-title {
    font-family: var(--body); font-weight: 500; font-size: 14px; color: var(--white);
    margin-bottom: 8px;
  }
  .upload-hint {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
    text-transform: uppercase; color: rgba(139,168,152,0.5); margin-bottom: 24px;
  }
  .upload-btn {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--black);
    background: var(--sage); padding: 10px 24px; border-radius: 2px;
    border: none; cursor: pointer; transition: background 0.2s;
  }
  .upload-btn:hover { background: var(--sage-light); }

  .session-list { display: flex; flex-direction: column; gap: 8px; }
  .session-item {
    display: grid; grid-template-columns: 1fr 80px 80px 80px;
    align-items: center; gap: 16px;
    background: var(--gray-dark);
    border: 1px solid rgba(139,168,152,0.1); border-radius: 3px;
    padding: 16px 20px;
    transition: border-color 0.2s;
  }
  .session-item:hover { border-color: rgba(139,168,152,0.3); }
  .session-name {
    font-family: var(--body); font-weight: 500; font-size: 14px; color: var(--white);
  }
  .session-meta {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
    color: rgba(139,168,152,0.6); margin-top: 2px;
  }
  .session-cell {
    font-family: var(--mono); font-size: 11px; color: rgba(245,245,242,0.5);
    text-align: right;
  }
  .session-cell.lap-time { color: var(--sage-light); }

  /* ─── CTA SECTION ─── */
  #cta {
    padding: 160px 48px;
    text-align: center;
    background: linear-gradient(to bottom, transparent, rgba(139,168,152,0.05) 50%, transparent);
    position: relative; overflow: hidden;
  }
  .cta-bg-text {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    font-family: var(--display); font-size: clamp(120px, 20vw, 280px);
    letter-spacing: 0.02em; color: transparent;
    -webkit-text-stroke: 1px rgba(139,168,152,0.06);
    pointer-events: none; white-space: nowrap; user-select: none;
  }
  .cta-eyebrow {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
    text-transform: uppercase; color: var(--sage); margin-bottom: 24px;
  }
  .cta-title {
    font-family: var(--display); font-size: clamp(52px, 7vw, 100px);
    letter-spacing: 0.03em; line-height: 0.95; margin-bottom: 32px;
  }
  .cta-sub {
    font-family: var(--body); font-weight: 300; font-size: 15px;
    color: rgba(245,245,242,0.5); max-width: 460px; margin: 0 auto 48px;
    line-height: 1.8;
  }
  .cta-actions { display: flex; justify-content: center; gap: 20px; }

  /* ─── FOOTER ─── */
  footer {
    border-top: 1px solid rgba(139,168,152,0.12);
    padding: 48px;
    display: flex; justify-content: space-between; align-items: center;
  }
  .footer-logo {
    display: flex; align-items: center; gap: 12px;
  }
  .footer-logo-text {
    font-family: var(--body); font-style: italic; font-weight: 600;
    font-size: 18px; letter-spacing: 2px; color: rgba(245,245,242,0.4);
  }
  .footer-copy {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
    color: rgba(245,245,242,0.2); text-transform: uppercase;
  }
  .footer-links {
    display: flex; gap: 28px; list-style: none;
  }
  .footer-links a {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
    text-transform: uppercase; color: rgba(245,245,242,0.25);
    text-decoration: none; transition: color 0.2s;
  }
  .footer-links a:hover { color: var(--sage); }

  /* ─── DIVIDER LINE ─── */
  .h-rule {
    border: none; border-top: 1px solid rgba(139,168,152,0.1);
    margin: 0 48px;
  }

  /* ─── SCROLL REVEAL ─── */
  .reveal { opacity: 0; transform: translateY(32px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .reveal.visible { opacity: 1; transform: translateY(0); }
  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }
  .reveal-delay-5 { transition-delay: 0.5s; }

  /* ─── SIGN-UP MODAL ─── */
  .fusion-modal-overlay {
    display: none;
    position: fixed; inset: 0; z-index: 1000;
    background: rgba(0,0,0,0.75);
    align-items: flex-start; justify-content: center;
    padding: 48px 24px;
    overflow-y: auto;
  }

  .modal-frame {
    position: relative;
    width: 100%; max-width: 440px;
    background: var(--gray-dark);
    border: 1px solid rgba(139,168,152,0.18);
    border-radius: 6px;
    padding: 40px 36px 36px;
    margin: auto;
  }
  .modal-close {
    position: absolute; top: 20px; right: 20px;
    width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: transparent; border: none;
    color: rgba(245,245,242,0.4);
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
  }
  .modal-close:hover { color: var(--white); background: rgba(255,255,255,0.06); }
  .modal-close svg { width: 14px; height: 14px; }

  .modal-logo {
    display: flex; align-items: center; gap: 10px; margin-bottom: 28px;
  }
  .modal-logo-text {
    font-family: var(--body); font-style: italic; font-weight: 600;
    font-size: 17px; letter-spacing: 1.5px; color: var(--white);
  }

  .modal-step-track {
    display: flex; align-items: center; gap: 6px; margin-bottom: 24px;
  }
  .modal-step-track .step-dot {
    height: 3px; flex: 1; border-radius: 2px;
    background: rgba(139,168,152,0.15);
    transition: background 0.3s;
    opacity: 1; transform: none;
  }
  .modal-step-track .step-dot.active { background: var(--sage); }
  .modal-step-track .step-dot.done { background: rgba(139,168,152,0.5); }

  .modal-eyebrow {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.15em;
    text-transform: uppercase; color: var(--sage); margin-bottom: 10px;
  }
  .modal-title {
    font-family: var(--display); font-size: 32px; letter-spacing: 0.02em;
    color: var(--white); line-height: 1; margin-bottom: 10px;
  }
  .modal-sub {
    font-family: var(--body); font-weight: 300; font-size: 13.5px;
    line-height: 1.6; color: rgba(245,245,242,0.5); margin-bottom: 28px;
  }

  .field-group { margin-bottom: 16px; }
  .field-label {
    display: block;
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
    text-transform: uppercase; color: rgba(245,245,242,0.45);
    margin-bottom: 7px;
  }
  .field-input {
    width: 100%;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(139,168,152,0.18);
    border-radius: 3px;
    padding: 13px 14px;
    font-family: var(--body); font-size: 14px; color: var(--white);
    transition: border-color 0.2s, background 0.2s;
  }
  .field-input::placeholder { color: rgba(245,245,242,0.25); }
  .field-input:focus {
    outline: none;
    border-color: var(--sage);
    background: rgba(139,168,152,0.06);
  }
  .field-input.pw-wrap-input { padding-right: 42px; }

  .field-wrap-relative { position: relative; }
  .pw-toggle {
    position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
    color: rgba(245,245,242,0.35); cursor: pointer;
  }
  .pw-toggle svg { width: 16px; height: 16px; display: block; }

  .pw-strength {
    display: flex; gap: 4px; margin-top: 8px;
  }
  .pw-bar {
    height: 3px; flex: 1; border-radius: 2px;
    background: rgba(255,255,255,0.08);
    transition: background 0.2s;
  }
  .pw-bar.fill-weak { background: var(--red-accent); }
  .pw-bar.fill-mid { background: #FBBF24; }
  .pw-bar.fill-strong { background: var(--green-accent); }
  .pw-hint {
    font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.05em;
    color: rgba(245,245,242,0.35); margin-top: 7px;
  }

  .modal-error {
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.02em;
    line-height: 1.5; color: var(--red-accent);
    min-height: 0; margin-top: 4px;
  }
  .modal-error:not(:empty) { margin-top: 12px; }

  .btn-modal-primary {
    width: 100%;
    background: var(--sage-light);
    color: var(--black);
    border: none;
    border-radius: 3px;
    padding: 15px;
    font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em;
    text-transform: uppercase; font-weight: 500;
    cursor: pointer;
    margin-top: 8px;
    transition: background 0.2s, transform 0.1s;
  }
  .btn-modal-primary:hover { background: var(--white); transform: translateY(-1px); }
  .btn-modal-primary:disabled { opacity: 0.6; cursor: default; transform: none; }

  .modal-footer-text {
    text-align: center;
    font-family: var(--body); font-weight: 300; font-size: 12.5px;
    color: rgba(245,245,242,0.4); margin-top: 22px;
  }
  .modal-footer-text a { color: var(--sage-light); text-decoration: none; }
  .modal-footer-text a:hover { text-decoration: underline; }

  .legal-text {
    font-family: var(--body); font-weight: 300; font-size: 11px;
    line-height: 1.6; color: rgba(245,245,242,0.3); margin-top: 18px;
  }
  .legal-text a { color: rgba(139,168,152,0.7); text-decoration: underline; }

  /* Step 2 — verify email */
  .verify-icon-wrap {
    width: 56px; height: 56px; border-radius: 50%;
    background: rgba(139,168,152,0.1);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 24px;
  }
  .verify-icon-wrap svg { width: 26px; height: 26px; color: var(--sage); }
  .verify-email-pill {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(139,168,152,0.15);
    border-radius: 20px;
    padding: 8px 16px;
    font-family: var(--mono); font-size: 12.5px; color: var(--sage-light);
    margin: 4px 0 28px;
  }
  .resend-row {
    display: flex; justify-content: center; gap: 6px;
    font-family: var(--body); font-size: 12.5px; color: rgba(245,245,242,0.4);
    margin-top: 18px;
  }
  .resend-row a { color: var(--sage-light); text-decoration: none; cursor: pointer; }
  .resend-row a:hover { text-decoration: underline; }

  /* Step 3 — plan / checkout bridge */
  .checkout-cancelled-banner {
    display: none;
    background: rgba(248,113,113,0.08);
    border: 1px solid rgba(248,113,113,0.3);
    border-radius: 3px;
    padding: 12px 14px; margin-bottom: 18px;
    font-family: var(--mono); font-size: 11px; line-height: 1.5;
    letter-spacing: 0.02em; color: var(--red-accent);
  }
  .plan-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(139,168,152,0.25);
    border-radius: 5px;
    padding: 20px;
    margin-bottom: 18px;
  }
  .plan-card-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
  .plan-name { font-family: var(--body); font-weight: 600; font-size: 15px; color: var(--white); }
  .plan-price { font-family: var(--display); font-size: 24px; color: var(--sage-light); }
  .plan-price span { font-family: var(--mono); font-size: 11px; color: rgba(245,245,242,0.4); }
  .plan-desc { font-family: var(--body); font-weight: 300; font-size: 12.5px; color: rgba(245,245,242,0.45); margin-bottom: 14px; }
  .plan-feature-list { display: flex; flex-direction: column; gap: 8px; }
  .plan-feature {
    display: flex; align-items: center; gap: 8px;
    font-family: var(--body); font-size: 12.5px; color: rgba(245,245,242,0.65);
  }
  .plan-feature svg { width: 13px; height: 13px; color: var(--sage); flex-shrink: 0; }

  .stripe-badge {
    display: flex; align-items: center; justify-content: center; gap: 6px;
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em;
    color: rgba(245,245,242,0.3); margin-top: 16px;
  }
  .stripe-badge svg { width: 12px; height: 12px; }

  /* Step 4 — success */
  .success-icon-wrap {
    width: 64px; height: 64px; border-radius: 50%;
    background: rgba(74,222,128,0.12);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 24px;
  }
  .success-icon-wrap svg { width: 28px; height: 28px; color: var(--green-accent); }

  /* ═══════════════════════════════════════════════════════════
     RESPONSIVE — base helper classes
     These replace former inline styles so the same layout can be
     overridden per breakpoint below. Values match the original
     inline styles exactly, so desktop appearance is unchanged.
     ═══════════════════════════════════════════════════════════ */
  .analysis-header-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
    align-items: end; margin-bottom: 64px;
  }
  .sessions-stats-row { display: flex; gap: 32px; }
  .lap-table-wrap { width: 100%; }

  /* ─── Mobile nav toggle (hidden on desktop) ─── */
  .nav-toggle {
    display: none;
    align-items: center; justify-content: center;
    width: 36px; height: 36px;
    background: transparent; border: none;
    color: var(--white); cursor: pointer; padding: 0;
  }
  .nav-toggle-icon { width: 22px; height: 22px; display: block; }
  .nav-toggle-icon-close { display: none; }
  nav.nav-open .nav-toggle-icon-open { display: none; }
  nav.nav-open .nav-toggle-icon-close { display: block; }

  /* ═══════════════════════════════════════════════════════════
     RESPONSIVE — TABLET (≤1024px)
     Desktop (≥1025px) is untouched above this point.
     ═══════════════════════════════════════════════════════════ */
  @media (max-width: 1024px) {
    nav { padding: 18px 32px; }
    section { padding: 96px 32px; }
    .h-rule { margin: 0 32px; }

    #intro { padding: 96px 32px; gap: 48px; }
    #features { padding: 96px 32px; }
    .features-header { gap: 32px; margin-bottom: 56px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-card.featured { grid-column: span 2; }

    #track { padding: 96px 32px; }
    .track-layout { gap: 48px; }

    #analysis { padding: 96px 32px; }
    .analysis-layout { grid-template-columns: 1fr; gap: 48px; }

    #sessions { padding: 96px 32px; }
    .sessions-layout { grid-template-columns: 1fr; gap: 48px; }

    #cta { padding: 120px 32px; }
  }

  /* ═══════════════════════════════════════════════════════════
     RESPONSIVE — MOBILE (≤768px)
     Nav collapses to a toggled panel; multi-column sections
     stack to one column; section padding tightens.
     ═══════════════════════════════════════════════════════════ */
  @media (max-width: 768px) {
    nav { padding: 16px 20px; }
    .nav-logo .brand-mark--nav { width: 30px; }
    .nav-logo-text { font-size: 18px; }

    .nav-toggle { display: flex; }
    .nav-links {
      position: absolute; top: 100%; left: 0; right: 0;
      flex-direction: column; align-items: stretch; gap: 2px;
      background: rgba(6,6,6,0.97);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(139,168,152,0.15);
      padding: 8px 20px 20px;
      max-height: 0; opacity: 0; overflow: hidden; pointer-events: none;
      transition: max-height 0.3s ease, opacity 0.25s ease;
    }
    nav.nav-open .nav-links {
      max-height: calc(100vh - 60px); opacity: 1; overflow-y: auto; pointer-events: auto;
    }
    .nav-links li { width: 100%; }
    .nav-links a {
      display: block; padding: 14px 4px; font-size: 12.5px;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    .nav-links li:last-child a { border-bottom: none; }
    .nav-cta { display: block; text-align: center; margin-top: 10px; }

    section { padding: 72px 24px; }
    .h-rule { margin: 0 24px; }

    #hero { padding: 0 24px 64px; min-height: 92vh; }
    .hero-bg-logo { width: 90vw; opacity: 0.35; top: 6%; }
    .hero-headline { margin-bottom: 24px; }
    .hero-sub { max-width: 100%; margin-bottom: 32px; }
    .hero-actions { flex-wrap: wrap; gap: 16px; }
    .hero-scroll-hint { display: none; }

    #intro { grid-template-columns: 1fr; gap: 40px; padding: 72px 24px; }
    .telem-row { grid-template-columns: repeat(2, 1fr); gap: 10px; }

    #features { padding: 72px 24px; }
    .features-header,
    .analysis-header-grid {
      grid-template-columns: 1fr; gap: 16px; align-items: start; margin-bottom: 40px;
    }
    .features-grid { grid-template-columns: 1fr; }
    .feature-card.featured { grid-column: span 1; }

    #track { padding: 72px 24px; }
    .track-layout { grid-template-columns: 1fr; gap: 40px; }
    .track-info { gap: 28px; }
    .track-visual { padding: 18px; }
    .hm-tabs { max-width: 100%; }

    #analysis { padding: 72px 24px; }
    .analysis-layout { gap: 32px; }
    .lap-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .lap-table { min-width: 560px; }
    .speed-chart { padding: 20px; }
    .speed-chart-stats { gap: 20px; flex-wrap: wrap; }
    .tele-summary { grid-template-columns: repeat(3, 1fr); gap: 6px; }

    #sessions { padding: 72px 24px; }
    .sessions-layout { grid-template-columns: 1fr; gap: 40px; }
    .sessions-stats-row { gap: 20px; flex-wrap: wrap; }
    .session-item { display: flex; flex-wrap: wrap; align-items: flex-start; }
    .session-item > div:first-child { flex: 1 0 100%; margin-bottom: 10px; }
    .session-cell { flex: 1; text-align: left; }

    #cta { padding: 96px 24px; }
    .cta-actions { flex-direction: column; gap: 14px; }
    .cta-actions .btn-primary { width: 100%; text-align: center; }

    footer {
      flex-direction: column; gap: 20px; text-align: center;
      padding: 32px 24px;
    }
    .footer-links { flex-wrap: wrap; justify-content: center; gap: 20px; }

    /* Signup modal */
    .fusion-modal-overlay { padding: 24px 16px; }
    .modal-frame { padding: 32px 24px 28px; }
    .modal-title { font-size: 26px; }
    .modal-close { width: 34px; height: 34px; top: 14px; right: 14px; }
  }

  /* ═══════════════════════════════════════════════════════════
     RESPONSIVE — SMALL PHONES (≤480px)
     ═══════════════════════════════════════════════════════════ */
  @media (max-width: 480px) {
    section { padding: 56px 20px; }
    .h-rule { margin: 0 20px; }

    #hero { padding: 0 20px 48px; }
    .hero-headline { font-size: clamp(56px, 16vw, 88px); }
    .hero-actions { flex-direction: column; align-items: stretch; gap: 12px; }
    .hero-actions .btn-primary,
    .hero-actions .btn-ghost { width: 100%; justify-content: center; text-align: center; }

    .telem-row { grid-template-columns: 1fr; gap: 8px; }

    #features { padding: 56px 20px; }
    .feature-card { padding: 28px 22px; }

    #track { padding: 56px 20px; }

    #analysis { padding: 56px 20px; }
    .lap-table { min-width: 520px; }
    .tele-summary { grid-template-columns: repeat(2, 1fr); }

    #sessions { padding: 56px 20px; }
    .upload-zone { padding: 32px 20px; }

    #cta { padding: 72px 20px; }
    .cta-title { font-size: clamp(40px, 12vw, 64px); }

    /* Signup modal */
    .fusion-modal-overlay { padding: 16px 10px; }
    .modal-frame { padding: 28px 18px 24px; }
    .modal-logo { margin-bottom: 20px; }
    .modal-step-track { margin-bottom: 18px; }
  }