:root {
  --primary: #179fc7;
  --primary-deep: #007096;
  --tech-cyan: #00d9ff;
  --secondary: #082f49;
  --accent: #22c55e;
  --teach-red: #ef3323;
  --ease-green: #20bc32;
  --danger: #e44f62;
  --warning: #f5a623;
  --ink: #17243b;
  --muted: #637087;
  --surface: rgba(255, 255, 255, 0.86);
  --line: rgba(23, 159, 199, 0.18);
  --shadow: 0 22px 55px rgba(13, 43, 87, 0.15);
  --radius: 24px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  line-height: 1.65;
  background:
    radial-gradient(circle at 8% 10%, rgba(23, 159, 199, 0.20), transparent 28rem),
    radial-gradient(circle at 94% 16%, rgba(0, 217, 255, 0.13), transparent 25rem),
    linear-gradient(145deg, #f8fdff 0%, #eef8fc 48%, #f9fffc 100%);
  background-attachment: fixed;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  filter: blur(3px);
  opacity: 0.42;
  animation: float-orb 11s ease-in-out infinite;
}

body::before {
  top: 9vh;
  left: -130px;
  background: linear-gradient(145deg, rgba(23, 159, 199, 0.34), rgba(13, 43, 87, 0.08));
}

body::after {
  right: -145px;
  bottom: 8vh;
  background: linear-gradient(145deg, rgba(57, 217, 138, 0.28), rgba(23, 159, 199, 0.10));
  animation-delay: -4s;
}

@keyframes float-orb {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(18px, -22px, 0) scale(1.06); }
}

a { color: var(--primary-deep); }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  transform: translateY(-150%);
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  background: var(--secondary);
}

.skip-link:focus { transform: translateY(0); }

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

.teach { color: var(--teach-red); }
.ease { color: var(--ease-green); }
.wordmark { white-space: nowrap; font-size: 1.08rem; font-weight: 950; }
.inline-wordmark { display: inline-block; white-space: nowrap; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(23, 159, 199, 0.35);
  outline-offset: 4px;
}

.site-shell {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.7);
  background: rgba(248, 253, 255, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.nav-wrap {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 850;
  letter-spacing: -0.02em;
}

.brand img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 8px 22px rgba(13, 43, 87, 0.22);
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
}

.nav-links a {
  padding: 9px 12px;
  border-radius: 999px;
  color: var(--secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 750;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"],
.nav-links a[aria-current="location"] {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(0, 112, 150, 0.2);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(255,255,255,.92);
  cursor: pointer;
}

.nav-toggle > span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 4px 0;
  border-radius: 2px;
  background: var(--secondary);
}

.hero {
  position: relative;
  overflow: hidden;
  margin: 42px 0 28px;
  padding: clamp(28px, 5vw, 62px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 34px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(235, 249, 255, 0.80)),
    radial-gradient(circle at 85% 20%, rgba(23, 159, 199, 0.25), transparent 20rem);
  box-shadow: var(--shadow);
}

.hero::after {
  content: "";
  position: absolute;
  width: 230px;
  height: 230px;
  right: -65px;
  top: -80px;
  border: 28px solid rgba(23, 159, 199, 0.09);
  border-radius: 50%;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 280px);
  align-items: center;
  gap: 36px;
}

.hero-logo {
  width: min(100%, 260px);
  aspect-ratio: 1;
  justify-self: center;
  border-radius: 50%;
  object-fit: cover;
  filter: drop-shadow(0 25px 25px rgba(13, 43, 87, 0.25));
  animation: logo-hover 5s ease-in-out infinite;
}

.gradient-text {
  color: transparent;
  background: linear-gradient(100deg, var(--primary-deep), var(--primary), var(--tech-cyan));
  -webkit-background-clip: text;
  background-clip: text;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ease-green);
  box-shadow: 0 0 0 5px rgba(32, 188, 50, .12), 0 0 18px rgba(32, 188, 50, .45);
}

@keyframes logo-hover {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-10px) rotate(1deg); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 12px;
  padding: 7px 11px;
  border: 1px solid rgba(23, 159, 199, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  color: var(--primary-deep);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1, h2, h3 {
  color: var(--secondary);
  line-height: 1.18;
  letter-spacing: -0.025em;
}

h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2rem, 6vw, 4.5rem);
}

h2 { margin: 0 0 14px; font-size: clamp(1.4rem, 3vw, 2.15rem); }
h3 { margin: 0 0 10px; font-size: 1.18rem; }

.hero p {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.15rem);
}

.hero-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 11px 18px;
  border: 0;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 850;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover { transform: translateY(-3px); }

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  box-shadow: 0 12px 28px rgba(23, 159, 199, 0.30);
}

.btn-secondary {
  color: var(--secondary);
  border: 1px solid rgba(13, 43, 87, 0.12);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 22px rgba(13, 43, 87, 0.08);
}

.content-grid,
.docs-grid,
.pricing-grid,
.feature-grid {
  display: grid;
  gap: 20px;
}

.docs-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pricing-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: stretch; }
.feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card,
.legal-card,
.price-card,
.notice {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.88);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.card,
.price-card {
  padding: 24px;
  border-radius: var(--radius);
}

.card {
  min-height: 190px;
  text-decoration: none;
  color: inherit;
  transform-style: preserve-3d;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border 0.25s ease;
}

.card:hover {
  transform: perspective(850px) rotateX(2deg) rotateY(-2deg) translateY(-7px);
  border-color: rgba(23, 159, 199, 0.32);
  box-shadow: 0 28px 62px rgba(13, 43, 87, 0.20);
}

.card-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border-radius: 15px;
  background: linear-gradient(145deg, #fff, #dff5fb);
  box-shadow: 8px 8px 18px rgba(13, 43, 87, 0.12), -7px -7px 16px #fff;
  font-size: 1.35rem;
}

.card p,
.price-card p { color: var(--muted); }

.section { margin: 30px 0; }
.section-space { margin-top: 76px; }
.section-heading { margin-bottom: 18px; }
.section-heading p { max-width: 760px; color: var(--muted); }

.centered-heading { max-width: 820px; margin-right: auto; margin-left: auto; text-align: center; }
.centered-heading p { margin-right: auto; margin-left: auto; }

.legal-card {
  margin: 32px 0;
  padding: clamp(24px, 5vw, 54px);
  border-radius: 30px;
}

.legal-card h1 { font-size: clamp(1.8rem, 5vw, 3.4rem); }
.legal-card h2 { margin-top: 34px; padding-top: 6px; }
.legal-card h3 { margin-top: 22px; }
.legal-card p, .legal-card li { max-width: 920px; }
.legal-card ul, .legal-card ol { padding-left: 24px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 20px;
  text-decoration: none;
  font-weight: 800;
}

.updated {
  color: var(--muted);
  font-size: 0.92rem;
}

.notice {
  margin: 22px 0;
  padding: 17px 19px;
  border-left: 5px solid var(--primary);
  border-radius: 16px;
}

.notice.warning { border-left-color: var(--warning); background: rgba(255, 249, 231, 0.90); }
.notice.success { border-left-color: var(--accent); background: rgba(239, 255, 248, 0.90); }
.notice.danger { border-left-color: var(--danger); background: rgba(255, 242, 244, 0.90); }
.notice p:first-child { margin-top: 0; }
.notice p:last-child { margin-bottom: 0; }

.pricing-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 22px 0;
}

.pricing-tabs button {
  padding: 10px 16px;
  border: 1px solid rgba(23, 159, 199, 0.18);
  border-radius: 999px;
  color: var(--secondary);
  background: rgba(255, 255, 255, 0.82);
  font-weight: 850;
  cursor: pointer;
}

.pricing-tabs button.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
}

.price-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.pricing-grid.two-plans {
  width: min(100%, 900px);
  margin-inline: auto;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.price-card.plan-trial {
  border-color: rgba(166, 133, 72, 0.22);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.97), rgba(247, 242, 229, 0.96)),
    #f7f2e5;
}

.price-card.plan-basic {
  color: #fff;
  border-color: rgba(0, 217, 255, 0.32);
  background: linear-gradient(155deg, #082f49 0%, #007096 55%, #179fc7 100%);
}

.price-card.plan-premium {
  color: #fff;
  border-color: rgba(125, 255, 157, 0.35);
  background: linear-gradient(155deg, #064e3b 0%, #087a3d 52%, #20bc32 100%);
}

.price-card.plan-basic h2,
.price-card.plan-basic h3,
.price-card.plan-basic p,
.price-card.plan-basic li,
.price-card.plan-basic .plan-label,
.price-card.plan-basic .price span,
.price-card.plan-premium h2,
.price-card.plan-premium h3,
.price-card.plan-premium p,
.price-card.plan-premium li,
.price-card.plan-premium .plan-label,
.price-card.plan-premium .price span { color: #fff; }

.price-card.plan-basic .feature-list li::before,
.price-card.plan-premium .feature-list li::before { color: #dfffee; }

.price-card.plan-basic .feature-list li.no::before,
.price-card.plan-premium .feature-list li.no::before { color: #ffd4d4; }

.price-card.featured {
  color: #fff;
  background: linear-gradient(155deg, #0d2b57 0%, #0b749d 54%, #179fc7 100%);
  transform: translateY(-8px);
}

.price-card.featured h2,
.price-card.featured h3,
.price-card.featured p,
.price-card.featured li { color: #fff; }

.price-card .plan-label {
  color: var(--primary-deep);
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.price-card.featured .plan-label { color: #bff5ff; }

.price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 8px 0 2px;
}

.price strong { font-size: clamp(2rem, 5vw, 3rem); line-height: 1; }
.price span { color: var(--muted); font-size: 0.88rem; }
.featured .price span { color: rgba(255,255,255,0.78); }

.saving {
  display: inline-flex;
  width: fit-content;
  margin: 10px 0 4px;
  padding: 6px 10px;
  border-radius: 999px;
  color: #08774a;
  background: #dff9ed;
  font-size: 0.82rem;
  font-weight: 850;
}

.savings-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  flex-wrap: wrap;
  margin: 10px 0 6px;
}

.savings-row .saving { margin: 0; }
.saving-amount { color: #075e78; background: #dff6fd; }
.plan-basic .saving-amount,
.plan-premium .saving-amount { color: #074e35; background: #dff9ed; }
.pricing-clarity { margin-top: 20px; }

.feature-list {
  flex: 1;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  margin: 9px 0;
  padding-left: 25px;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 1000;
}

.feature-list li.no::before { content: "×"; color: var(--danger); }

.price-panel[hidden] { display: none; }

.comparison {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.76);
}

.comparison th,
.comparison td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.comparison th { color: var(--secondary); background: rgba(23, 159, 199, 0.08); }

.faq details {
  margin: 12px 0;
  padding: 17px 19px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
}

.faq summary { color: var(--secondary); font-weight: 850; cursor: pointer; }

.site-footer {
  margin-top: 48px;
  padding: 30px 0 42px;
  border-top: 1px solid rgba(13, 43, 87, 0.09);
  color: var(--muted);
  font-size: 0.9rem;
}

/* Page d’accueil */
.home-hero {
  padding: clamp(32px, 6vw, 72px);
  background:
    linear-gradient(132deg, rgba(255,255,255,.97), rgba(233,248,253,.88)),
    radial-gradient(circle at 83% 18%, rgba(0,217,255,.26), transparent 22rem);
}

.home-hero h1 { font-size: clamp(2.25rem, 5.8vw, 4.8rem); }
.home-hero strong { font-weight: 950; }
.home-hero .hero-promise { color: var(--secondary); font-weight: 760; }

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 22px;
  color: var(--muted);
  font-size: .86rem;
  font-weight: 750;
}

.trust-row span::first-letter { color: var(--ease-green); }

.visual-stage {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.visual-stage::before {
  content: "";
  position: absolute;
  z-index: -3;
  width: 310px;
  aspect-ratio: 1;
  border-radius: 42% 58% 61% 39% / 45% 38% 62% 55%;
  background: linear-gradient(145deg, rgba(23,159,199,.24), rgba(0,217,255,.08));
  filter: blur(2px);
  animation: morph 9s ease-in-out infinite;
}

@keyframes morph {
  0%,100% { transform: rotate(-5deg) scale(1); border-radius: 42% 58% 61% 39% / 45% 38% 62% 55%; }
  50% { transform: rotate(7deg) scale(1.05); border-radius: 58% 42% 37% 63% / 61% 55% 45% 39%; }
}

.visual-stage .hero-logo { width: min(68%, 245px); z-index: 2; }

.orbit {
  position: absolute;
  border: 1px solid rgba(23,159,199,.22);
  border-radius: 50%;
  animation: orbit-spin 14s linear infinite;
}
.orbit::after { content: ""; position: absolute; top: 50%; left: 100%; width: 10px; height: 10px; border: 2px solid rgba(255,255,255,.82); border-radius: 50%; transform: translate(-50%,-50%); }
.orbit-cyan { width: 350px; height: 350px; border-color: rgba(0,217,255,.28); animation-duration: 15s; animation-delay: -1s; }
.orbit-cyan::after { background: var(--tech-cyan); box-shadow: 0 0 7px var(--tech-cyan), 0 0 22px var(--tech-cyan); }
.orbit-green { width: 315px; height: 315px; border-color: rgba(32,188,50,.24); animation-direction: reverse; animation-duration: 12s; animation-delay: -4s; }
.orbit-green::after { background: var(--ease-green); box-shadow: 0 0 7px var(--ease-green), 0 0 22px rgba(32,188,50,.85); }
.orbit-orange { width: 278px; height: 278px; border-color: rgba(194,65,12,.22); animation-duration: 10s; animation-delay: -6s; }
.orbit-orange::after { background: #c2410c; box-shadow: 0 0 7px #c2410c, 0 0 22px rgba(194,65,12,.85); }
.orbit-yellow { width: 242px; height: 242px; border-color: rgba(250,204,21,.30); animation-direction: reverse; animation-duration: 8s; animation-delay: -2.5s; }
.orbit-yellow::after { background: #facc15; box-shadow: 0 0 7px #facc15, 0 0 22px rgba(250,204,21,.92); }
@keyframes orbit-spin { to { transform: rotate(360deg); } }

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 1px;
  overflow: hidden;
  margin: 28px 0 48px;
  border: 1px solid rgba(23,159,199,.15);
  border-radius: 22px;
  background: rgba(23,159,199,.14);
  box-shadow: 0 18px 42px rgba(8,47,73,.09);
}
.metric-strip div { min-height: 104px; display: flex; flex-direction: column; justify-content: center; padding: 20px; text-align: center; background: rgba(255,255,255,.9); }
.metric-strip strong { color: var(--primary-deep); font-size: 1.75rem; line-height: 1.1; }
.metric-strip span { margin-top: 5px; color: var(--muted); font-size: .82rem; font-weight: 700; }

.home-feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 18px;
}

.feature-card {
  --feature-color: var(--primary);
  position: relative;
  overflow: hidden;
  min-height: 270px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 24px;
  background: rgba(255,255,255,.86);
  box-shadow: 0 18px 42px rgba(8,47,73,.11);
  transition: transform .25s ease, box-shadow .25s ease;
}
.feature-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 5px; background: var(--feature-color); }
.feature-card::after { content: ""; position: absolute; width: 115px; height: 115px; top: -55px; right: -45px; border-radius: 50%; background: color-mix(in srgb, var(--feature-color) 12%, transparent); }
.feature-card:hover { transform: translateY(-7px); box-shadow: 0 26px 58px rgba(8,47,73,.17); }
.feature-card p { color: var(--muted); font-size: .94rem; }
.feature-icon { display: grid; place-items: center; width: 50px; height: 50px; margin-bottom: 20px; border-radius: 16px; background: color-mix(in srgb, var(--feature-color) 14%, white); font-size: 1.4rem; }
.feature-tag { display: inline-flex; margin-top: 8px; padding: 5px 9px; border-radius: 999px; color: color-mix(in srgb, var(--feature-color) 76%, #082f49); background: color-mix(in srgb, var(--feature-color) 10%, white); font-size: .72rem; font-weight: 850; }
.feature-blue { --feature-color: #179fc7; }.feature-red { --feature-color: #ef3323; }.feature-orange { --feature-color: #f59e0b; }.feature-violet { --feature-color: #8b5cf6; }.feature-green { --feature-color: #20bc32; }.feature-cyan { --feature-color: #00b8d9; }.feature-navy { --feature-color: #264a7d; }.feature-teal { --feature-color: #0d9488; }

.workflow-section { padding: clamp(26px,4vw,46px); border-radius: 30px; color: #fff; background: linear-gradient(135deg, #082f49, #007096 58%, #179fc7); box-shadow: 0 25px 60px rgba(0,112,150,.25); }
.workflow-section h2, .workflow-section h3 { color: #fff; }
.workflow-section .eyebrow { color: #d8f8ff; background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.25); }
.workflow-section .section-heading p { max-width: 920px; color: rgba(255,255,255,.84); }
.workflow-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; }
.workflow-grid article { position: relative; padding: 22px; border: 1px solid rgba(255,255,255,.16); border-radius: 20px; background: rgba(255,255,255,.08); }
.workflow-grid article > span { display: block; margin-bottom: 20px; color: #7beaff; font-size: 1.7rem; font-weight: 950; }
.workflow-grid p { margin-bottom: 0; color: rgba(255,255,255,.76); font-size: .9rem; }

.feature-video-showcase {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(280px,.78fr);
  gap: clamp(30px,6vw,72px);
  align-items: center;
  overflow: hidden;
  margin: 34px 0 42px;
  padding: clamp(28px,5vw,58px);
  border: 1px solid rgba(255,255,255,.6);
  border-radius: 34px;
  color: #fff;
  background: linear-gradient(135deg,rgba(4,34,51,.98),rgba(0,112,150,.95) 56%,rgba(23,159,199,.9));
  box-shadow: 0 28px 70px rgba(8,47,73,.24),inset 0 1px 0 rgba(255,255,255,.25);
  perspective: 1400px;
}
.feature-video-showcase::before { content: ""; position: absolute; z-index: -2; inset: 0; background: linear-gradient(115deg,rgba(255,255,255,.13),transparent 28%,transparent 66%,rgba(255,255,255,.08)); pointer-events: none; }
.feature-video-showcase::after { content: ""; position: absolute; z-index: -1; right: -12%; bottom: -45%; width: 62%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle,rgba(0,217,255,.2),transparent 66%); filter: blur(8px); pointer-events: none; }
.video-showcase-copy { position: relative; z-index: 2; }
.video-showcase-copy .eyebrow { color: #d8f8ff; border-color: rgba(255,255,255,.24); background: rgba(255,255,255,.1); }
.video-showcase-copy h3 { max-width: 540px; margin: 18px 0 14px; color: #fff; font-size: clamp(2rem,4vw,3.25rem); line-height: 1.04; }
.video-showcase-copy p { max-width: 570px; color: rgba(255,255,255,.82); font-size: 1.02rem; }
.video-hint { display: inline-flex; align-items: center; gap: 10px; margin-top: 12px; padding: 9px 13px; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; color: #e8fbff; background: rgba(255,255,255,.08); font-size: .78rem; font-weight: 800; }
.video-hint span { color: #ff6b5f; }
.showcase-orb { position: absolute; z-index: -1; border-radius: 50%; filter: blur(1px); opacity: .92; animation: showcase-drift 7s ease-in-out infinite; }
.showcase-orb::after { content: ""; position: absolute; inset: 18%; border-radius: inherit; background: rgba(255,255,255,.72); filter: blur(10px); opacity: .35; }
.showcase-orb-cyan { top: 9%; right: 7%; width: 22px; height: 22px; background: #00d9ff; box-shadow: 0 0 10px #00d9ff,0 0 34px rgba(0,217,255,.82); }
.showcase-orb-green { right: 42%; bottom: 12%; width: 17px; height: 17px; background: #20bc32; box-shadow: 0 0 9px #20bc32,0 0 30px rgba(32,188,50,.78); animation-delay: -2.4s; }
.showcase-orb-orange { top: 18%; left: 5%; width: 14px; height: 14px; background: #f97316; box-shadow: 0 0 9px #f97316,0 0 28px rgba(249,115,22,.82); animation-delay: -4.6s; }
@keyframes showcase-drift { 0%,100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(0,-14px,18px) scale(1.12); } }
.video-carousel { position: relative; z-index: 2; width: min(100%, 350px); justify-self: center; overflow: hidden; }
.video-track { display: flex; transition: transform .4s ease; }
.video-slide { min-width: 100%; display: grid; place-items: center; }
.video-player-shell {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.42);
  border-radius: 30px;
  background: #071923;
  box-shadow: 0 34px 70px rgba(0,0,0,.34),14px 18px 38px rgba(0,217,255,.12),inset 0 1px 0 rgba(255,255,255,.3);
  transform: rotateY(-4deg) rotateX(1.5deg);
  transform-style: preserve-3d;
  animation: video-float 6s ease-in-out infinite;
}
.video-player-shell::before { content: ""; position: absolute; z-index: 3; inset: 0; border-radius: inherit; background: linear-gradient(120deg,rgba(255,255,255,.18),transparent 21%,transparent 72%,rgba(0,217,255,.1)); pointer-events: none; }
@keyframes video-float { 0%,100% { transform: rotateY(-4deg) rotateX(1.5deg) translateY(0); } 50% { transform: rotateY(3deg) rotateX(-1deg) translateY(-9px); } }
@keyframes video-float-mobile { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
.video-player-shell iframe, .video-placeholder { width: 100%; height: 100%; border: 0; }
.video-placeholder { position: relative; display: block; padding: 0; overflow: hidden; cursor: pointer; text-decoration: none; background: #071923; }
.video-placeholder img { width: 100%; height: 100%; padding: 60px; object-fit: contain; opacity: .88; background: radial-gradient(circle at 50% 38%,rgba(23,159,199,.45),transparent 38%),linear-gradient(155deg,#082f49 0%,#007096 58%,#179fc7 100%); transition: transform .35s ease, opacity .35s ease; }
.video-placeholder::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg,rgba(7,25,35,.02),rgba(7,25,35,.44)); }
.video-placeholder:hover img, .video-placeholder:focus-visible img { transform: scale(1.035); opacity: .94; }
.video-placeholder:focus-visible { outline: 4px solid rgba(0,217,255,.75); outline-offset: -4px; }
.video-play { position: absolute; z-index: 2; top: 50%; left: 50%; display: grid; place-items: center; width: 72px; height: 72px; padding-left: 5px; transform: translate(-50%,-50%); border-radius: 50%; color: #fff; background: linear-gradient(135deg,#ef3323,#b91c1c); box-shadow: 0 14px 35px rgba(0,0,0,.32); font-size: 1.65rem; }
.video-preview-label { position: absolute; z-index: 2; right: 22px; bottom: 24px; left: 22px; color: #fff; font-size: 1rem; font-weight: 850; text-align: center; text-shadow: 0 2px 10px rgba(0,0,0,.45); }
.video-placeholder.is-loading .video-play { animation: video-loading .8s linear infinite; }
.video-placeholder.is-loading .video-play { color: transparent; border: 4px solid rgba(255,255,255,.34); border-top-color: #fff; background: rgba(0,112,150,.78); }
@keyframes video-loading { to { transform: translate(-50%,-50%) rotate(360deg); } }
.video-quality-link { display: flex; align-items: center; justify-content: center; gap: 7px; margin: 17px auto 0; color: #dffaff; font-size: .8rem; font-weight: 800; text-align: center; text-decoration: none; }
.video-quality-link:hover { color: #fff; text-decoration: underline; }
.video-controls { align-items: center; justify-content: center; gap: 18px; margin-top: 22px; }
.video-controls:not([hidden]) { display: flex; }
.video-controls > button { width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.28); border-radius: 50%; color: #fff; background: rgba(255,255,255,.12); font-size: 1.7rem; cursor: pointer; box-shadow: 0 9px 22px rgba(0,0,0,.14); }
.video-dots { display: flex; align-items: center; gap: 8px; }
.video-dots button { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.35); cursor: pointer; }
.video-dots button.active { width: 28px; border-radius: 999px; background: #7beaff; }

.pricing-preview { padding-top: 44px; }
.compact-pricing .price-card { min-height: 185px; }
.center-action { display: flex; justify-content: center; margin-top: 26px; }

.install-section { padding-top: 34px; }
.install-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; }
.install-card { position: relative; display: flex; flex-direction: column; padding: clamp(24px,4vw,34px); border: 1px solid rgba(255,255,255,.92); border-radius: 28px; background: rgba(255,255,255,.88); box-shadow: var(--shadow); }
.install-card.pwa-card { border-color: rgba(23,159,199,.34); background: linear-gradient(145deg, rgba(255,255,255,.98), rgba(225,247,253,.92)); }
.install-card.apk-card { border-color: rgba(32,188,50,.36); background: linear-gradient(145deg, rgba(255,255,255,.98), rgba(234,252,237,.94)); }
.install-icon { display: grid; place-items: center; width: 60px; height: 60px; margin-bottom: 20px; border-radius: 19px; background: linear-gradient(145deg,#fff,#d9f4fb); box-shadow: 8px 8px 20px rgba(0,112,150,.12); font-size: 1.7rem; }
.apk-card .install-icon { background: linear-gradient(145deg,#fff,#dcfce4); box-shadow: 8px 8px 20px rgba(32,188,50,.13); }
.install-card p, .install-card li { color: var(--muted); }
.install-card ol { flex: 1; padding-left: 22px; }
.install-card li { margin: 10px 0; }
.recommend-badge { position: absolute; top: 22px; right: 22px; padding: 6px 10px; border-radius: 999px; color: #fff; background: linear-gradient(135deg,#20bc32,#087a26); font-size: .72rem; font-weight: 850; }
.btn-apk { color: #fff; background: linear-gradient(135deg,#20bc32,#087a26); box-shadow: 0 12px 28px rgba(32,188,50,.25); }
.full-btn { width: 100%; }

.pack-card { min-height: 250px; border-width: 2px; }
.pack-white { border-color: rgba(23,159,199,.18); background: rgba(255,255,255,.96); }
.pack-blue { border-color: rgba(0,217,255,.32); color: #fff; background: linear-gradient(155deg,#082f49 0%,#007096 55%,#179fc7 100%); }
.pack-blue .plan-label, .pack-blue h3, .pack-blue p, .pack-blue li, .pack-blue .price span { color: #fff; }
.pack-green { border-color: rgba(125,255,157,.35); color: #fff; background: linear-gradient(155deg,#064e3b 0%,#087a3d 52%,#20bc32 100%); }
.pack-green .plan-label, .pack-green h3, .pack-green p, .pack-green li, .pack-green .price span { color: #fff; }
.pack-blue .feature-list li::before, .pack-green .feature-list li::before { color: #dfffee; }

.doc-card { min-height: 220px; }
.doc-card > span:last-child { color: var(--primary-deep); font-weight: 850; }

.contact-panel { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(260px,.7fr); gap: 34px; align-items: center; margin-top: 72px; padding: clamp(28px,5vw,56px); border-radius: 30px; background: linear-gradient(135deg,rgba(255,255,255,.95),rgba(225,247,253,.9)); box-shadow: var(--shadow); }
.contact-panel p { color: var(--muted); }
.contact-actions { display: flex; flex-direction: column; gap: 10px; }
.contact-phone { text-align: center; text-decoration: none; font-weight: 800; }

.footer-main { display: grid; grid-template-columns: 1.6fr repeat(3,1fr); gap: 34px; padding-top: 8px; }
.footer-main > div:not(.footer-brand) { display: flex; flex-direction: column; gap: 8px; }
.footer-main h3 { margin-bottom: 6px; font-size: .9rem; text-transform: uppercase; letter-spacing: .06em; }
.footer-main a { text-decoration: none; }
.footer-brand p { max-width: 330px; color: var(--muted); }
.footer-bottom { display: flex; justify-content: space-between; gap: 15px; margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); }

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-links { display: flex; flex-wrap: wrap; gap: 14px; }
.footer-links a { text-decoration: none; font-weight: 750; }

/* Page Pourquoi TeachEase ? */
.why-hero {
  background:
    linear-gradient(132deg, rgba(255,255,255,.97), rgba(232,248,253,.9)),
    radial-gradient(circle at 82% 16%, rgba(32,188,50,.16), transparent 22rem);
}

.why-hero h1 { font-size: clamp(2.4rem, 6vw, 4.9rem); }
.why-title-brand { display: inline-block; white-space: nowrap; }
.why-hero-lead { max-width: 720px; color: var(--secondary) !important; font-weight: 680; }

.why-hero-visual {
  position: relative;
  min-height: 310px;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.why-hero-visual .hero-logo { z-index: 2; width: min(68%, 218px); }

.why-page main p {
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

.why-quick-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1px;
  overflow: hidden;
  margin: 28px 0 54px;
  border: 1px solid rgba(23,159,199,.16);
  border-radius: 22px;
  background: rgba(23,159,199,.14);
  box-shadow: 0 18px 42px rgba(8,47,73,.09);
}

.why-quick-nav a {
  min-height: 104px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 18px 20px;
  color: var(--secondary);
  background: rgba(255,255,255,.93);
  text-decoration: none;
  font-weight: 850;
  transition: color .2s ease, background .2s ease;
}

.why-quick-nav a:hover { color: var(--primary-deep); background: #fff; }
.why-quick-nav span { margin-bottom: 2px; color: var(--primary); font-size: .78rem; letter-spacing: .08em; }

.why-logo-story {
  display: grid;
  grid-template-columns: minmax(250px,.7fr) minmax(0,1.3fr);
  gap: clamp(30px,6vw,72px);
  align-items: center;
  scroll-margin-top: 104px;
}

.why-logo-figure {
  margin: 0;
  padding: clamp(20px,4vw,34px);
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 30px;
  background: linear-gradient(145deg,rgba(255,255,255,.98),rgba(226,247,253,.92));
  box-shadow: var(--shadow);
  text-align: center;
}

.why-logo-figure img {
  width: min(100%,360px);
  aspect-ratio: 1;
  border-radius: 50%;
  object-fit: cover;
  filter: drop-shadow(0 22px 24px rgba(13,43,87,.22));
}

.why-logo-figure figcaption { margin-top: 18px; color: var(--secondary); font-weight: 850; }
.why-logo-copy > p { max-width: 760px; color: var(--muted); }

.why-symbol-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 12px;
  margin-top: 24px;
}

.why-symbol-grid article {
  display: grid;
  grid-template-columns: 40px minmax(0,1fr);
  gap: 12px;
  align-items: start;
  padding: 15px;
  border: 1px solid rgba(23,159,199,.14);
  border-radius: 17px;
  background: rgba(255,255,255,.78);
}

.why-symbol-grid h3 { margin: 1px 0 5px; font-size: 1rem; }
.why-symbol-grid p { margin: 0; color: var(--muted); font-size: .87rem; line-height: 1.55; }

.why-symbol-icon,
.why-symbol-dot {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 13px;
  background: linear-gradient(145deg,#fff,#dff5fb);
  box-shadow: 5px 5px 13px rgba(13,43,87,.1);
  color: var(--primary-deep);
  font-size: 1.15rem;
  font-weight: 950;
}

.why-symbol-dot::after { content: ""; width: 15px; height: 15px; border-radius: 50%; box-shadow: 0 0 13px currentColor; }
.why-symbol-red { color: var(--teach-red); }
.why-symbol-red::after { background: var(--teach-red); }
.why-symbol-green { color: var(--ease-green); }
.why-symbol-green::after { background: var(--ease-green); }
.why-symbol-ring { border: 4px solid var(--tech-cyan); border-radius: 50%; background: #0b4380; box-shadow: 0 0 13px rgba(0,217,255,.55); }

.why-intro {
  display: grid;
  grid-template-columns: minmax(0,1.45fr) minmax(270px,.55fr);
  gap: clamp(26px,5vw,58px);
  align-items: center;
}

.why-intro-copy p { max-width: 780px; color: var(--muted); }

.why-evidence-card {
  padding: 28px;
  border: 1px solid rgba(23,159,199,.22);
  border-radius: 26px;
  background: linear-gradient(145deg,rgba(255,255,255,.98),rgba(226,247,253,.94));
  box-shadow: var(--shadow);
}

.why-evidence-number { display: block; color: var(--primary-deep); font-size: clamp(2.1rem,4vw,3.3rem); font-weight: 950; line-height: 1.08; }
.why-evidence-card strong { display: block; margin: 7px 0 12px; color: var(--secondary); font-size: 1.05rem; }
.why-evidence-card p { margin-bottom: 0; color: var(--muted); font-size: .91rem; }

.why-problems { margin-top: 84px; }
.why-problem-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }

.why-problem-card {
  --problem-color: var(--primary);
  position: relative;
  overflow: hidden;
  min-height: 270px;
  padding: 29px;
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 25px;
  background: rgba(255,255,255,.89);
  box-shadow: 0 18px 42px rgba(8,47,73,.1);
}

.why-problem-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 5px; background: var(--problem-color); }
.why-problem-index { display: block; margin-bottom: 28px; color: var(--problem-color); font-size: .8rem; font-weight: 950; letter-spacing: .1em; }
.why-problem-card h3 { max-width: 560px; font-size: 1.3rem; }
.why-problem-card p {
  margin-bottom: 0;
  color: var(--muted);
  text-align-last: left;
  -webkit-hyphens: auto;
  hyphens: auto;
  overflow-wrap: break-word;
  word-spacing: normal;
}
.why-accent-blue { --problem-color: #179fc7; }
.why-accent-green { --problem-color: #20bc32; }
.why-accent-orange { --problem-color: #f59e0b; }
.why-accent-red { --problem-color: #ef3323; }
.why-accent-violet { --problem-color: #8b5cf6; }
.why-accent-cyan { --problem-color: #00b8d9; }
.why-accent-navy { --problem-color: #264a7d; }
.why-accent-teal { --problem-color: #0d9488; }

.why-problem-featured {
  border-color: rgba(0,217,255,.32);
  background: linear-gradient(145deg,rgba(255,255,255,.98),rgba(222,248,253,.96));
  box-shadow: 0 22px 52px rgba(0,112,150,.16);
}

.why-action {
  display: grid;
  grid-template-columns: minmax(0,1.45fr) minmax(250px,.55fr);
  gap: clamp(28px,5vw,60px);
  align-items: center;
  margin-top: 84px;
  padding: clamp(30px,5vw,58px);
  border-radius: 30px;
  color: #fff;
  background: linear-gradient(135deg,#082f49,#007096 58%,#179fc7);
  box-shadow: 0 25px 60px rgba(0,112,150,.25);
}

.why-action h2 { color: #fff; }
.why-action .eyebrow { color: #d8f8ff; border-color: rgba(255,255,255,.25); background: rgba(255,255,255,.1); }
.why-action-copy p { color: rgba(255,255,255,.84); }
.why-action blockquote { margin: 0; padding: 28px; border: 1px solid rgba(255,255,255,.2); border-radius: 24px; background: rgba(255,255,255,.1); }
.why-action blockquote p { margin: 0; color: #fff; font-size: 1.16rem; font-weight: 820; line-height: 1.55; }

.why-founder {
  margin-top: 84px;
  padding: clamp(28px,5vw,52px);
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 30px;
  background: rgba(255,255,255,.88);
  box-shadow: var(--shadow);
}

.why-founder p { color: var(--muted); }

.why-response { margin-top: 84px; }
.why-response-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; }
.why-response-grid article { padding: 25px; border: 1px solid rgba(255,255,255,.9); border-radius: 24px; background: rgba(255,255,255,.88); box-shadow: 0 18px 42px rgba(8,47,73,.1); }
.why-response-grid p { margin-bottom: 0; color: var(--muted); font-size: .92rem; }
.why-response-icon { display: grid; place-items: center; width: 50px; height: 50px; margin-bottom: 19px; border-radius: 16px; background: linear-gradient(145deg,#fff,#dff5fb); box-shadow: 7px 7px 17px rgba(13,43,87,.1); font-size: 1.35rem; }

.why-principle {
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(300px,.85fr);
  gap: clamp(28px,5vw,58px);
  align-items: center;
  margin-top: 84px;
  padding: clamp(28px,5vw,52px);
  border: 1px solid rgba(32,188,50,.24);
  border-radius: 30px;
  background: linear-gradient(145deg,rgba(255,255,255,.98),rgba(235,253,239,.94));
  box-shadow: var(--shadow);
}

.why-principle p { color: var(--muted); }
.why-principle ul { margin: 0; padding: 0; list-style: none; }
.why-principle li { position: relative; margin: 12px 0; padding: 12px 14px 12px 42px; border-radius: 14px; color: var(--secondary); background: rgba(255,255,255,.82); font-weight: 760; }
.why-principle li::before { content: "✓"; position: absolute; left: 15px; color: var(--ease-green); font-weight: 950; }

.why-closing { max-width: 880px; margin: 88px auto 0; text-align: center; }
.why-closing .eyebrow { gap: 0; }
.why-closing p { max-width: 720px; margin: 0 auto 24px; color: var(--muted); }

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
  .docs-grid, .pricing-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .price-card.featured { transform: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-logo { width: 190px; grid-row: 1; }
  .home-feature-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .workflow-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .feature-video-showcase { grid-template-columns: 1fr; text-align: center; }
  .video-showcase-copy h3, .video-showcase-copy p { margin-right: auto; margin-left: auto; }
  .footer-main { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .why-quick-nav, .why-response-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .why-logo-story, .why-intro, .why-action, .why-principle { grid-template-columns: 1fr; }
  .why-logo-figure { width: min(100%,520px); margin-inline: auto; }
}

@media (max-width: 1040px) {
  .nav-wrap { position: relative; align-items: center; padding: 11px 0; }
  .brand small { display: none; }
  .brand img { width: 44px; height: 44px; }
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: calc(100% + 1px); right: 0; left: 0; flex-direction: column; align-items: stretch; gap: 4px; padding: 12px; border: 1px solid var(--line); border-radius: 0 0 18px 18px; background: rgba(248,253,255,.98); box-shadow: 0 20px 35px rgba(8,47,73,.13); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 12px; font-size: .88rem; }
}

@media (max-width: 680px) {
  .site-shell { width: min(100% - 20px, 1160px); }
  .nav-wrap { position: relative; align-items: center; padding: 11px 0; }
  .brand small { display: none; }
  .brand img { width: 44px; height: 44px; }
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: calc(100% + 1px); right: 0; left: 0; flex-direction: column; align-items: stretch; gap: 4px; padding: 12px; border: 1px solid var(--line); border-radius: 0 0 18px 18px; background: rgba(248,253,255,.98); box-shadow: 0 20px 35px rgba(8,47,73,.13); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 12px; font-size: .88rem; }
  .hero { margin-top: 22px; border-radius: 25px; }
  .hero-logo { width: 155px; }
  .visual-stage .hero-logo { width: 138px; }
  .docs-grid, .pricing-grid, .feature-grid { grid-template-columns: 1fr; }
  .pricing-grid.two-plans { grid-template-columns: 1fr; }
  .home-feature-grid, .workflow-grid, .install-grid, .contact-panel, .footer-main { grid-template-columns: 1fr; }
  .visual-stage { min-height: 275px; }
  .orbit-cyan { width: 260px; height: 260px; }
  .orbit-green { width: 235px; height: 235px; }
  .orbit-orange { width: 210px; height: 210px; }
  .orbit-yellow { width: 185px; height: 185px; }
  .metric-strip { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .metric-strip div { min-height: 94px; padding: 15px; }
  .workflow-section { border-radius: 24px; }
  .feature-video-showcase { margin-top: 26px; padding: 28px 20px 34px; border-radius: 26px; }
  .video-carousel { width: min(100%, 330px); }
  .video-player-shell { border-radius: 24px; transform: none; animation-name: video-float-mobile; }
  .reveal { opacity: 1; transform: none; }
  .install-card ol { min-height: 0; }
  .footer-bottom { flex-direction: column; }
  .legal-card { border-radius: 22px; }
  .comparison { display: block; overflow-x: auto; }
  .why-hero-visual { min-height: 240px; grid-row: 1; }
  .why-hero-visual .hero-logo { width: 142px; }
  .why-quick-nav, .why-problem-grid, .why-response-grid { grid-template-columns: 1fr; }
  .why-symbol-grid { grid-template-columns: 1fr; }
  .why-quick-nav a { min-height: 82px; }
  .why-problem-card { min-height: 0; padding: 24px; }
  .why-action, .why-founder, .why-principle { border-radius: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* Installation Android, PWA et Windows — 2.0.1 */
.install-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.install-card { min-width: 0; padding: 26px; }
.install-card.windows-card { border-color: rgba(38,74,125,.3); background: linear-gradient(145deg,rgba(255,255,255,.98),rgba(232,240,255,.95)); }
.windows-card .install-icon { background: linear-gradient(145deg,#fff,#dbeafe); }
.btn-windows { color: #fff; background: linear-gradient(135deg,#264a7d,#007096); box-shadow: 0 12px 28px rgba(38,74,125,.22); }
.install-card .install-meta { font-size: .82rem; font-weight: 750; color: var(--primary-deep); }
.install-card code { overflow-wrap: anywhere; font-size: .86em; }
.install-card .full-btn { white-space: normal; text-align: center; line-height: 1.4; min-height: 56px; }
.installation-help { margin-top: 32px; }
.installation-help details { margin-top: 12px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.94); overflow: hidden; scroll-margin-top: 100px; }
.installation-help summary { padding: 19px 22px; cursor: pointer; font-weight: 800; color: var(--secondary); }
.installation-help summary:focus-visible { outline: 3px solid var(--primary); outline-offset: -4px; }
.installation-help details[open] summary { background: rgba(23,159,199,.08); border-bottom: 1px solid var(--line); }
.install-help-body { padding: 4px 24px 22px; }
.install-help-body h4 { margin: 22px 0 8px; font-size: 1rem; }
.install-help-body p, .install-help-body li { color: var(--muted); }
.install-help-body code { overflow-wrap: anywhere; }
.install-help-note { padding: 14px 16px; border-left: 3px solid var(--primary); background: rgba(23,159,199,.06); border-radius: 8px; }
.download-hashes dt { font-weight: 750; margin-top: 14px; }
.download-hashes dd { margin: 6px 0 16px; padding: 12px; border-radius: 10px; background: #eef8fc; }
.download-hashes code { word-break: break-all; font-size: .85rem; }
@media (min-width: 681px) and (max-width: 1050px) {
  .install-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .install-card.windows-card { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  .install-grid { grid-template-columns: 1fr; }
  .install-card { padding: 24px; }
  .installation-help summary { padding: 17px; }
  .install-help-body { padding: 2px 17px 18px; }
}
@media (max-width: 380px) {
  .install-card .recommend-badge { position: static; align-self: flex-start; margin-bottom: 16px; }
}

/* Trois options d’installation : vert, orange, bleu. */
.install-card.apk-card { border-color: #86d69b; border-top: 5px solid #168538; background: linear-gradient(145deg,#f6fff8,#e4f8e9); }
.install-card.pwa-card { border-color: #f4b36b; border-top: 5px solid #e07913; background: linear-gradient(145deg,#fffaf3,#ffecd5); }
.install-card.windows-card { border-color: #8fc0ee; border-top: 5px solid #1477bd; background: linear-gradient(145deg,#f6fbff,#e1efff); }
.apk-card h3, .apk-card .install-meta { color: #116c2c; }
.pwa-card h3, .pwa-card .install-meta { color: #963e00; }
.windows-card h3, .windows-card .install-meta { color: #0c5798; }
.pwa-card .install-icon { background: linear-gradient(145deg,#fff8ed,#ffd8ad); box-shadow: 8px 8px 20px rgba(224,121,19,.16); }
.btn-apk { background: linear-gradient(135deg,#168538,#087a26); }
.btn-pwa { color: #fff; background: linear-gradient(135deg,#c45100,#a83b00); box-shadow: 0 12px 28px rgba(196,81,0,.24); }
.btn-windows { background: linear-gradient(135deg,#1477bd,#095a9b); }
.installation-check { font-size: .82rem; margin-top: 20px; }