/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }
button, input, textarea { font: inherit; }

/* === VARIABLES === */
:root {
  --white:       #FFFFFF;
  --bg:          #FAFAFA;
  --bg-dark:     #0C0C0F;
  --text:        #0F0F14;
  --text-2:      #71717A;
  --text-3:      #A1A1AA;
  --accent:      #1B4FFF;
  --accent-2:    #6C3BFF;
  --border:      #E4E4E7;
  --border-dark: rgba(255,255,255,0.08);
  --radius:      12px;
  --ease:        cubic-bezier(0.16, 1, 0.3, 1);
  --shadow:      0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.10), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-xl:   0 50px 100px rgba(0,0,0,0.18), 0 20px 40px rgba(0,0,0,0.10);
}

/* === BASE === */
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: 'Inter', sans-serif; background: var(--white); color: var(--text); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
p { color: var(--text-2); }

/* === TYPOGRAPHIE === */
h1, h2, h3 { color: var(--text); font-weight: 600; line-height: 1.1; letter-spacing: -0.025em; }
h1 { font-size: clamp(52px, 7vw, 96px); }
h2 { font-size: clamp(36px, 4.5vw, 60px); }
h3 { font-size: clamp(17px, 2vw, 21px); font-weight: 500; }

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
}

/* === LAYOUT === */
.container { max-width: 1200px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 72px); }
.section { padding: clamp(80px, 10vw, 140px) 0; }
.bg-alt { background: var(--bg); }

/* === BOUTONS === */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 10px; font-size: 15px; font-weight: 500;
  cursor: pointer; border: none; transition: all 220ms var(--ease); white-space: nowrap;
}
.btn--primary { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(27,79,255,0.3); }
.btn--primary:hover { background: #2d5fff; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(27,79,255,0.4); }
.btn--ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn--sm { padding: 9px 18px; font-size: 14px; }
.btn--full { width: 100%; justify-content: center; }

/* === NAVBAR === */
.nav {
  position: fixed; inset: 0 0 auto;
  z-index: 200;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 300ms ease;
}
.nav.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 32px; }
.nav__logo { font-size: 18px; font-weight: 600; letter-spacing: -0.02em; color: var(--text); }
.nav__logo span { color: var(--accent); }
.nav__links { display: flex; gap: 32px; }
.nav__links a { font-size: 14px; color: var(--text-2); transition: color 180ms ease; }
.nav__links a:hover { color: var(--text); }

/* === HERO === */
.hero { padding-top: 64px; min-height: 100vh; display: flex; flex-direction: column; justify-content: center; position: relative; overflow: hidden; }

/* Subtile lueur en arrière-plan */
.hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -100px;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(27,79,255,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 60px;
  align-items: center;
  padding: clamp(60px, 8vw, 100px) 0;
}

/* Animation ligne par ligne du H1 */
.hero__h1 { margin-bottom: 24px; }
.hero__h1 .line { display: block; overflow: hidden; }
.hero__h1 .line span { display: block; transform: translateY(110%); animation: line-up 0.9s var(--ease) forwards; }
.hero__h1 .line:nth-child(1) span { animation-delay: 0.05s; }
.hero__h1 .line:nth-child(2) span { animation-delay: 0.15s; }
.hero__h1 .line:nth-child(3) span { animation-delay: 0.25s; color: var(--accent); }

@keyframes line-up { to { transform: translateY(0); } }

.hero__sub { font-size: clamp(16px, 1.8vw, 19px); max-width: 480px; line-height: 1.65; margin-bottom: 36px; opacity: 0; animation: fade-up 0.8s var(--ease) 0.4s forwards; }
.hero__ctas { display: flex; gap: 12px; flex-wrap: wrap; opacity: 0; animation: fade-up 0.8s var(--ease) 0.55s forwards; }

@keyframes fade-up { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

/* Preuve sociale */
.proof-strip { padding: 28px 0 clamp(60px, 8vw, 100px); border-top: 1px solid var(--border); }
.proof-strip__label { font-family: 'JetBrains Mono', monospace; font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-3); margin-bottom: 20px; }
.proof-strip__logos { display: flex; gap: 40px; align-items: center; flex-wrap: wrap; }
.proof-logo { font-size: 13px; font-weight: 500; color: var(--text-3); letter-spacing: -0.01em; }

/* ===================== iPHONE 17 MOCKUP ===================== */
.hero__visual {
  display: flex;
  justify-content: center;
  transform-style: preserve-3d;
  transition: transform 100ms ease;
  opacity: 0;
  animation: fade-up 1s var(--ease) 0.3s forwards;
}

.iphone {
  position: relative;
  width: 268px;
  height: 574px;
  filter: drop-shadow(0 40px 80px rgba(0,0,0,0.22)) drop-shadow(0 16px 32px rgba(0,0,0,0.12));
}

.iphone__frame {
  position: relative;
  width: 100%;
  height: 100%;
  background: linear-gradient(150deg, #DCDCDF 0%, #C6C6CA 45%, #AEAEB8 100%);
  border-radius: 46px;
  /* Finition métallique titanium */
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,0.55),
    inset 0 1px 2px rgba(255,255,255,0.4),
    0 0 0 1px rgba(0,0,0,0.14);
}

/* Écran */
.iphone__screen {
  position: absolute;
  inset: 10px;
  background: #F2F2F7;
  border-radius: 38px;
  overflow: hidden;
}

/* Dynamic Island */
.iphone__island {
  position: absolute;
  top: 10px; left: 50%;
  transform: translateX(-50%);
  width: 108px; height: 32px;
  background: #0C0C0F;
  border-radius: 16px;
  z-index: 20;
}

/* Status bar */
.iphone__statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 50px;
  position: relative;
  z-index: 15;
  flex-shrink: 0;
}
.status-time { font-family: 'Inter', sans-serif; font-size: 14px; font-weight: 600; color: #0C0C0F; }
.status-right { display: flex; gap: 6px; align-items: center; color: #0C0C0F; }

/* Boutons physiques */
.iphone__btn { position: absolute; background: linear-gradient(90deg, #B8B8C0, #CACACE); border-radius: 2px; }
.iphone__btn--power   { right: -3px; top: 154px; width: 3px; height: 72px; }
.iphone__btn--action  { left: -3px; top: 110px; width: 3px; height: 34px; }
.iphone__btn--vol-up  { left: -3px; top: 158px; width: 3px; height: 62px; }
.iphone__btn--vol-down { left: -3px; top: 232px; width: 3px; height: 62px; }

/* ============ APP SCREENS ============ */
.app {
  position: absolute;
  top: 50px; left: 0; right: 0; bottom: 0;
  background: #F2F2F7;
  padding: 14px 14px 80px;
  overflow-y: auto;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 350ms var(--ease), transform 350ms var(--ease);
  pointer-events: none;
  scrollbar-width: none;
}
.app::-webkit-scrollbar { display: none; }
.app.active { opacity: 1; transform: translateY(0); pointer-events: auto; }

/* App card */
.app-card { background: #fff; border-radius: 12px; padding: 12px; margin-bottom: 8px; }

/* App Home */
.app__header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
.app__greeting { font-size: 16px; font-weight: 600; color: #0C0C0F; line-height: 1.2; }
.app__date { font-size: 11px; color: #8E8E93; margin-top: 2px; }
.app__avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 14px; font-weight: 600; display: flex; align-items: center; justify-content: center; }

.app__mic-card { background: #fff; border-radius: 14px; padding: 14px; display: flex; align-items: center; gap: 12px; margin-bottom: 16px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.app__mic-icon { width: 42px; height: 42px; border-radius: 12px; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.app__mic-label { font-size: 13px; font-weight: 600; color: #0C0C0F; line-height: 1.2; }
.app__mic-sub { font-size: 11px; color: #8E8E93; margin-top: 2px; }

.app__section-title { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: #8E8E93; margin-bottom: 8px; }

.app__invoice-item { display: flex; align-items: center; gap: 10px; background: #fff; border-radius: 10px; padding: 10px 12px; margin-bottom: 6px; }
.app__invoice-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.dot--green { background: #34C759; }
.dot--orange { background: #FF9500; }
.dot--blue { background: #007AFF; }
.app__invoice-info { flex: 1; min-width: 0; }
.app__invoice-client { font-size: 12px; font-weight: 600; color: #0C0C0F; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.app__invoice-ref { font-size: 10px; color: #8E8E93; display: block; }
.app__invoice-amount { text-align: right; flex-shrink: 0; }
.app__invoice-price { font-size: 12px; font-weight: 600; color: #0C0C0F; display: block; }
.app__invoice-status { font-size: 9px; display: block; padding: 1px 5px; border-radius: 4px; margin-top: 2px; }
.status--paid    { background: #E8F9EE; color: #1A7A3A; }
.status--pending { background: #FFF4E0; color: #9A6000; }

.app__fab { position: absolute; bottom: 16px; left: 14px; right: 14px; background: var(--accent); color: #fff; border: none; border-radius: 12px; padding: 13px; font-size: 14px; font-weight: 600; cursor: pointer; }

/* App Invoice */
.app__nav { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.app__nav-back { font-size: 14px; color: #007AFF; }
.app__nav-title { font-size: 15px; font-weight: 600; color: #0C0C0F; }

.app__field-label { font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: #8E8E93; margin-bottom: 6px; }
.app__field-row { display: flex; align-items: center; gap: 10px; background: #fff; border-radius: 10px; padding: 10px 12px; margin-bottom: 14px; }
.app__field-avatar { width: 32px; height: 32px; border-radius: 50%; background: #E8F0FF; color: var(--accent); font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.app__field-name { font-size: 13px; font-weight: 600; color: #0C0C0F; }
.app__field-sub { font-size: 11px; color: #8E8E93; }
.app__field-chevron { font-size: 18px; color: #C7C7CC; margin-left: auto; }

.app__items { background: #fff; border-radius: 10px; overflow: hidden; margin-bottom: 12px; }
.app__item-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 12px; }
.app__item-name { font-size: 12px; color: #0C0C0F; }
.app__item-price { font-size: 12px; font-weight: 600; color: #0C0C0F; }
.app__item-sep { height: 1px; background: #F2F2F7; margin: 0 12px; }

.app__total-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 12px; background: #fff; border-radius: 10px; margin-bottom: 14px; }
.app__total-label { font-size: 13px; font-weight: 600; color: #0C0C0F; }
.app__total-amount { font-size: 18px; font-weight: 700; color: var(--accent); }

.app__btn-primary { display: block; width: 100%; background: var(--accent); color: #fff; border: none; border-radius: 12px; padding: 13px; font-size: 13px; font-weight: 600; cursor: pointer; text-align: center; }

/* App CRM */
.app__crm-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; color: #0C0C0F; }
.app__search { background: #E9E9EB; border-radius: 10px; padding: 8px 12px; font-size: 12px; color: #8E8E93; margin-bottom: 4px; }
.app__crm-row { display: flex; align-items: center; gap: 10px; padding: 8px 0; }
.app__crm-avatar { width: 32px; height: 32px; border-radius: 50%; font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.app__crm-info { flex: 1; min-width: 0; }
.app__crm-name { font-size: 13px; font-weight: 600; color: #0C0C0F; display: block; }
.app__crm-last { font-size: 11px; color: #8E8E93; display: block; }
.app__crm-badge { font-size: 10px; font-weight: 600; padding: 3px 8px; border-radius: 6px; flex-shrink: 0; }
.badge--blue   { background: #E8F0FF; color: #1A56F0; }
.badge--orange { background: #FFF3E0; color: #E65100; }
.badge--green  { background: #E8F9EE; color: #1A7A3A; }
.app__crm-sep { height: 1px; background: var(--border); margin: 0; }

/* App Auto */
.app__auto-header { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border-radius: 14px; padding: 14px; color: #fff; margin-bottom: 4px; }
.app__auto-count { font-size: 36px; font-weight: 700; display: block; }
.app__auto-label { font-size: 11px; opacity: 0.85; }
.app__toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.app__toggle-row:last-of-type { border-bottom: none; }
.app__toggle-name { font-size: 12px; font-weight: 600; color: #0C0C0F; }
.app__toggle-sub { font-size: 10px; color: #8E8E93; margin-top: 1px; }
.app__toggle { width: 38px; height: 22px; border-radius: 11px; background: #E5E5EA; flex-shrink: 0; position: relative; transition: background 200ms ease; }
.app__toggle::after { content: ''; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,0.2); transition: transform 200ms ease; }
.app__toggle.on { background: #34C759; }
.app__toggle.on::after { transform: translateX(16px); }

/* ===================== DARK SECTION (PROBLÈME) ===================== */
.dark-section { background: var(--bg-dark); padding: clamp(80px, 10vw, 140px) 0; }
.dark-section h2 { color: #fff; }
.dark-section .section-intro { color: rgba(255,255,255,0.45); max-width: 500px; margin: 14px 0 52px; font-size: 17px; }

.problem-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.problem-card { background: rgba(255,255,255,0.04); border: 1px solid var(--border-dark); border-radius: var(--radius); padding: 28px; transition: background 300ms ease, border-color 300ms ease; }
.problem-card:hover { background: rgba(255,255,255,0.07); border-color: rgba(255,255,255,0.14); }
.problem-card__icon { color: var(--accent); margin-bottom: 16px; }
.problem-card h3 { color: #fff; margin-bottom: 10px; }
.problem-card p { font-size: 14px; color: rgba(255,255,255,0.45); line-height: 1.6; }

/* ===================== FEATURES STICKY ===================== */
#features { height: 500vh; position: relative; }

.features-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--white);
}

.features-container {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 80px;
  align-items: center;
  width: 100%;
}

.features-tabs { padding-right: 20px; }
.features-tabs h2 { margin-bottom: 36px; }

.feature-tab {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 18px 20px; border-radius: 12px; cursor: pointer;
  transition: background 250ms ease, opacity 250ms ease;
  opacity: 0.35;
  margin-bottom: 4px;
}
.feature-tab.active { background: rgba(27,79,255,0.05); opacity: 1; }
.feature-tab__num { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--accent); opacity: 0.5; flex-shrink: 0; padding-top: 2px; transition: opacity 250ms ease; }
.feature-tab.active .feature-tab__num { opacity: 1; }
.feature-tab h3 { font-size: 16px; margin-bottom: 5px; }
.feature-tab p { font-size: 14px; line-height: 1.55; }

.features-iphone { display: flex; justify-content: center; }

/* ===================== MACBOOK OPENING ===================== */
.macbook-section { padding: clamp(80px, 10vw, 140px) 0; background: var(--bg); overflow: hidden; }
.macbook-section h2 { margin-bottom: 12px; }
.macbook-section .section-sub { font-size: 18px; max-width: 480px; margin-bottom: 64px; }

.macbook-scene { perspective: 1200px; perspective-origin: center 20%; }

.macbook {
  position: relative;
  width: 600px;
  margin: 0 auto;
}

/* Base (clavier) */
.macbook__base {
  width: 600px;
  height: 30px;
  background: linear-gradient(180deg, #2A2A2E, #1A1A1E);
  border-radius: 0 0 10px 10px;
  position: relative;
  z-index: 1;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
}

.macbook__notch {
  width: 100px;
  height: 6px;
  background: #0C0C10;
  border-radius: 0 0 6px 6px;
}

/* Couvercle */
.macbook__lid {
  width: 600px;
  height: 380px;
  transform-origin: bottom center;
  transform: rotateX(78deg);
  transition: transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  z-index: 2;
}

.macbook__lid.open {
  transform: rotateX(-18deg);
}

.macbook__lid-outer {
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, #2E2E32, #1A1A1E);
  border-radius: 10px 10px 0 0;
  box-shadow: 0 -2px 0 rgba(255,255,255,0.07) inset;
}

/* Écran Mac */
.macbook__screen {
  position: absolute;
  inset: 12px 14px 8px;
  background: #0F0F14;
  border-radius: 6px;
  overflow: hidden;
}

.mac__menubar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.mac__dot { width: 10px; height: 10px; border-radius: 50%; }
.mac__dot--red    { background: #FF5F57; }
.mac__dot--yellow { background: #FFBD2E; }
.mac__dot--green  { background: #28C840; }
.mac__title { flex: 1; text-align: center; font-size: 11px; color: rgba(255,255,255,0.35); font-weight: 500; }

.mac__content { display: flex; height: calc(100% - 35px); }

/* Sidebar */
.mac__sidebar {
  width: 130px;
  background: rgba(255,255,255,0.03);
  border-right: 1px solid rgba(255,255,255,0.05);
  padding: 14px 10px;
  flex-shrink: 0;
}
.mac__brand { font-size: 14px; font-weight: 700; color: #fff; letter-spacing: -0.02em; margin-bottom: 18px; padding: 0 4px; }
.mac__brand span { color: var(--accent); }
.mac__nav-item { font-size: 10px; padding: 6px 8px; border-radius: 6px; color: rgba(255,255,255,0.4); margin-bottom: 2px; cursor: pointer; }
.mac__nav-item.active { background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.85); }

/* Main dashboard */
.mac__main { flex: 1; padding: 16px; overflow: hidden; }
.mac__dash-title { font-size: 13px; font-weight: 600; color: #fff; margin-bottom: 12px; }

.mac__kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 12px; }
.mac__kpi { background: rgba(255,255,255,0.05); border-radius: 8px; padding: 10px; }
.mac__kpi-label { font-size: 9px; color: rgba(255,255,255,0.35); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 4px; }
.mac__kpi-value { font-size: 16px; font-weight: 700; color: #fff; }
.mac__kpi-sub { font-size: 9px; color: #34C759; margin-top: 2px; }

.mac__chart-area { background: rgba(255,255,255,0.03); border-radius: 8px; padding: 12px; }
.mac__chart-label { font-size: 9px; color: rgba(255,255,255,0.35); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.06em; }
.mac__bars { display: flex; align-items: flex-end; gap: 6px; height: 60px; }
.mac__bar { flex: 1; border-radius: 3px 3px 0 0; opacity: 0.7; transition: opacity 200ms ease; }
.mac__bar:hover { opacity: 1; }

/* ===================== PROCESS ===================== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
  margin-top: 60px;
  gap: 0;
}

.process-line {
  position: absolute;
  top: 24px; left: 12.5%; right: 12.5%;
  height: 1px;
  background: var(--border);
}

.process-line__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 1.4s var(--ease);
}

.process-line__fill.full { width: 100%; }

.process-step { text-align: center; padding: 0 16px; position: relative; }
.process-step__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--white); border: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--accent);
  margin-bottom: 20px; position: relative; z-index: 1;
  transition: background 400ms ease, border-color 400ms ease, box-shadow 400ms ease;
}

.process-step.active .process-step__num {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 0 6px rgba(27,79,255,0.12);
}

.process-step h3 { font-size: 15px; margin-bottom: 8px; }
.process-step p { font-size: 13px; line-height: 1.55; }

/* ===================== IMPACT / STATS ===================== */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 52px 0 48px;
}

.impact-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
}

.impact-card__num {
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--accent);
  line-height: 1;
  display: inline;
}

.impact-card__unit {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 600;
  color: var(--accent);
  display: inline;
  vertical-align: baseline;
}

.impact-card__label {
  font-size: 14px;
  margin-top: 12px;
}

.impact-body {
  font-size: 17px;
  max-width: 680px;
  line-height: 1.75;
  color: var(--text-2);
}

/* ===================== CONTACT ===================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; margin-top: 52px; align-items: start; }
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { display: flex; flex-direction: column; gap: 7px; }
.form-field label { font-size: 11px; font-family: 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: 0.09em; color: var(--text-3); }
.form-field input, .form-field textarea {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 14px; font-size: 15px; color: var(--text);
  outline: none; resize: vertical;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--text-3); }
.form-field textarea { min-height: 120px; }
.form-field input:focus, .form-field textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(27,79,255,0.10); }

.contact-info { display: flex; flex-direction: column; gap: 28px; padding-top: 4px; }
.contact-item { display: flex; flex-direction: column; gap: 4px; }
.contact-item__label { font-family: 'JetBrains Mono', monospace; font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-3); }
.contact-item a, .contact-item span:not(.contact-item__label) { font-size: 16px; color: var(--text); transition: color 180ms ease; }
.contact-item a:hover { color: var(--accent); }

/* ===================== FOOTER ===================== */
.footer { border-top: 1px solid var(--border); padding: 44px 0 28px; }
.footer__inner { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 20px; margin-bottom: 32px; }
.footer__tagline { font-size: 13px; color: var(--text-3); margin-top: 6px; }
.footer__links { display: flex; gap: 24px; padding-top: 4px; }
.footer__links a { font-size: 13px; color: var(--text-3); transition: color 180ms ease; }
.footer__links a:hover { color: var(--text); }
.footer__bottom { padding-top: 24px; border-top: 1px solid var(--border); }
.footer__bottom span { font-size: 13px; color: var(--text-3); }

/* ===================== SCROLL REVEAL ===================== */
.reveal, .reveal-grid > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}
.reveal.in, .reveal-grid > *.in { opacity: 1; transform: translateY(0); }

/* ===================== RESPONSIVE ===================== */
@media (max-width: 1023px) {
  .hero__inner { grid-template-columns: 1fr; justify-items: center; }
  .hero__text { text-align: center; }
  .hero__sub { margin: 0 auto 36px; }
  .hero__ctas { justify-content: center; }
  .features-container { grid-template-columns: 1fr; }
  .features-iphone { display: none; }
  #features { height: auto; }
  .features-sticky { position: relative; height: auto; padding: clamp(80px,10vw,140px) 0; }
  .feature-tab { opacity: 1; }
}

@media (max-width: 767px) {
  .nav__links { display: none; }
  .problem-grid { grid-template-columns: 1fr; }
  .impact-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .form-row { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; gap: 36px; }
  .process-line { top: 0; bottom: 0; left: 24px; right: auto; width: 1px; height: auto; }
  .process-line__fill { width: 100% !important; height: 0%; transition: height 1.4s var(--ease); }
  .process-line__fill.full { height: 100%; width: 100%; }
  .process-step { text-align: left; padding-left: 60px; }
  .process-step__num { position: absolute; left: 0; top: 0; margin: 0; }
  .macbook { width: 100%; }
  .macbook__base, .macbook__lid { width: 100%; }
  .footer__inner { flex-direction: column; }
}