:root {
  --night: #0b1020;
  --night-2: #131b36;
  --night-3: #1b2547;
  --violet: #5446e0;
  --violet-bright: #8b7dff;
  --cyan: #22d3ee;
  --cyan-deep: #0c6a82;
  --orange: #ffa94d;
  --orange-deep: #9a4507;
  --ink: #131a2e;
  --muted: #475069;
  --surface: #ffffff;
  --tint: #f2f4fb;
  --line: #dde1ee;
  --ok: #0f7a4d;
  --warn: #a15c00;
  --bad: #b42318;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(11, 16, 32, 0.12);
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; font-family: var(--font); font-size: 1.0625rem; line-height: 1.6; color: var(--ink); background: var(--surface); -webkit-text-size-adjust: 100%; }
img { max-width: 100%; height: auto; display: block; }
[hidden] { display: none !important; }
.site-nav ul a[aria-current='page'] { color: #fff; background: rgba(255, 255, 255, 0.12); }
a { color: var(--violet); text-underline-offset: 3px; }
a:hover { color: #3b2fb8; }
code { font-family: var(--mono); font-size: 0.92em; background: var(--tint); padding: 0.1em 0.4em; border-radius: 6px; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.6em; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
h3 { font-size: 1.2rem; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; }

:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; border-radius: 6px; }

.container { width: min(1160px, 100% - 32px); margin-inline: auto; }
.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; }
.skip-link { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--orange); color: var(--night); padding: 10px 16px; border-radius: 8px; font-weight: 700; }
.skip-link:focus { top: 12px; }

/* En-tête */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(11, 16, 32, 0.92); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255, 255, 255, 0.08); color: #fff; }
.header-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.brand:hover { color: inherit; }
.brand-mark { border-radius: 10px; }
.site-header .container { width: min(1280px, 100% - 32px); }
.brand-text { white-space: nowrap; display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 1.15rem; }
.brand-text small { font-size: 0.78rem; color: #b8c0dc; letter-spacing: 0.04em; }
.site-nav { display: flex; align-items: center; gap: 24px; }
.site-nav ul { display: flex; gap: 4px; list-style: none; }
.site-nav ul a { display: block; white-space: nowrap; padding: 8px 12px; border-radius: 8px; color: #dfe4f6; text-decoration: none; font-size: 0.95rem; }
.site-nav ul a:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }
.nav-actions { display: flex; gap: 8px; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid rgba(255, 255, 255, 0.25); background: transparent; border-radius: 10px; cursor: pointer; align-items: center; justify-content: center; }
.menu-toggle-bars, .menu-toggle-bars::before, .menu-toggle-bars::after { display: block; width: 20px; height: 2px; background: #fff; border-radius: 2px; position: relative; content: ''; transition: transform 0.2s, opacity 0.2s; }
.menu-toggle-bars::before { position: absolute; top: -6px; }
.menu-toggle-bars::after { position: absolute; top: 6px; }
.menu-toggle[aria-expanded='true'] .menu-toggle-bars { background: transparent; }
.menu-toggle[aria-expanded='true'] .menu-toggle-bars::before { top: 0; transform: rotate(45deg); }
.menu-toggle[aria-expanded='true'] .menu-toggle-bars::after { top: 0; transform: rotate(-45deg); }

/* Boutons */
.btn { white-space: nowrap; display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 12px 22px; border-radius: 12px; border: 2px solid transparent; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; transition: transform 0.15s, background 0.15s, border-color 0.15s; }
.btn:hover { transform: translateY(-1px); }
.btn-small { min-height: 40px; padding: 8px 16px; font-size: 0.95rem; }
.btn-primary { background: var(--orange); color: var(--night); }
.btn-primary:hover { background: #ffbb6e; color: var(--night); }
.btn-ghost { background: transparent; color: var(--violet); border-color: var(--violet); }
.btn-ghost:hover { background: rgba(84, 70, 224, 0.08); color: #3b2fb8; }
.btn-ghost-light { background: rgba(255, 255, 255, 0.08); color: #fff; border-color: rgba(255, 255, 255, 0.55); }
.btn-ghost-light:hover { background: rgba(255, 255, 255, 0.18); color: #fff; }
.site-header .btn-ghost { color: #fff; border-color: rgba(255, 255, 255, 0.55); }
.site-header .btn-ghost:hover { background: rgba(255, 255, 255, 0.14); color: #fff; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 0; }
.button-row-center { justify-content: center; }
.text-link { font-weight: 700; }

/* Hero */
.hero { background: radial-gradient(1200px 500px at 85% -10%, rgba(139, 125, 255, 0.35), transparent 60%), radial-gradient(900px 500px at -10% 110%, rgba(34, 211, 238, 0.2), transparent 60%), var(--night); color: #fff; padding: 56px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.eyebrow { font-size: 0.85rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--cyan-deep); margin-bottom: 12px; }
.hero .eyebrow, .section-dark .eyebrow { color: var(--cyan); }
.accent { background: linear-gradient(90deg, #a99cff, #22d3ee); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 62ch; }
.hero .lead, .section-dark .lead, .cta .lead { color: #cdd3ea; }
.steps { list-style: none; display: grid; gap: 10px; margin: 24px 0 0; }
.steps li { display: flex; align-items: center; gap: 12px; color: #e8ebf8; }
.step-number { flex: none; display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: rgba(139, 125, 255, 0.25); border: 1px solid var(--violet-bright); font-weight: 700; font-size: 0.9rem; }
.hero-note { font-size: 0.9rem; color: #aab2d0; margin-top: 16px; }
.hero-visual { margin: 0; border-radius: var(--radius); overflow: hidden; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5); border: 1px solid rgba(255, 255, 255, 0.14); background: #fff; }
.hero-visual img { width: 100%; max-height: 520px; object-fit: cover; object-position: top; }
.hero-visual figcaption, .shot figcaption { font-size: 0.85rem; padding: 8px 14px; color: var(--muted); background: var(--tint); }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 40px 0 0; }
.facts div { padding: 16px 20px; border-radius: 12px; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.12); }
.facts dt { font-size: 1.8rem; font-weight: 800; color: var(--orange); line-height: 1.1; }
.facts dd { margin: 4px 0 0; color: #cdd3ea; font-size: 0.95rem; }

/* Sections */
.section { padding: 88px 0; }
.section-tint { background: var(--tint); }
.section-dark { background: linear-gradient(180deg, var(--night) 0%, var(--night-2) 100%); color: #fff; }
.section-head { max-width: 760px; margin-bottom: 40px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.split-reverse .split-copy { order: 2; }
.split-reverse .shot { order: 1; }
.split-copy .lead { margin-bottom: 20px; }
.shot { margin: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); background: #fff; }
.shot img { width: 100%; }
.note { font-size: 0.92rem; color: var(--muted); border-left: 4px solid var(--orange); padding: 4px 0 4px 14px; }
.check-list, .cross-list, .plain-list { list-style: none; display: grid; gap: 10px; margin: 0 0 20px; }
.check-list li, .cross-list li { position: relative; padding-left: 30px; }
.check-list li::before, .cross-list li::before { position: absolute; left: 0; top: 0.1em; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-size: 0.8rem; font-weight: 800; }
.check-list li::before { content: '✓'; background: rgba(15, 122, 77, 0.14); color: var(--ok); }
.section-dark .check-list li::before { background: rgba(34, 211, 238, 0.18); color: var(--cyan); }
.cross-list li::before { content: '–'; background: rgba(255, 169, 77, 0.2); color: var(--orange); }
.plain-list li { padding-left: 18px; position: relative; color: var(--muted); }
.plain-list li::before { content: ''; position: absolute; left: 0; top: 0.7em; width: 6px; height: 6px; border-radius: 50%; background: var(--violet-bright); }

/* Cartes */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.card-dark { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.14); box-shadow: none; color: #e8ebf8; }
.params-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 32px; }
.four-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.four-grid .card { padding: 24px; box-shadow: none; }
.tag { display: inline-block; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; padding: 3px 10px; border-radius: 999px; vertical-align: middle; margin-right: 6px; }
.tag-violet { background: rgba(84, 70, 224, 0.12); color: var(--violet); }
.tag-cyan { background: rgba(14, 116, 144, 0.14); color: var(--cyan-deep); }
.tag-orange { background: rgba(180, 83, 9, 0.14); color: var(--orange-deep); }
.four-grid .tag { display: block; width: max-content; margin: 0 0 10px; }
.tag-grey { background: #e6e9f3; color: #3c4560; }
.audience-grid { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.audience-grid li { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.audience-grid h3 { font-size: 1.1rem; }
.audience-grid p { color: var(--muted); margin: 0; }

/* Simulateur */
.estimator { color: var(--ink); }
.estimator-head p { color: var(--muted); max-width: 70ch; }
.estimator-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 16px; margin: 20px 0; }
.estimator-form label { display: grid; gap: 6px; font-weight: 600; font-size: 0.92rem; }
.estimator-form input, .estimator-form select { font: inherit; padding: 10px 12px; border: 2px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink); min-height: 46px; }
.estimator-form input:focus-visible, .estimator-form select:focus-visible { outline-offset: 0; border-color: var(--violet); }
.estimator-summary { font-weight: 600; padding: 12px 16px; background: var(--tint); border-radius: 10px; border-left: 4px solid var(--violet); }
.chart { position: relative; display: grid; gap: 10px; margin: 20px 0 8px; padding: 6px 0 22px; }
.chart-row { display: grid; grid-template-columns: 72px 1fr; align-items: center; gap: 12px; font-size: 0.85rem; font-weight: 700; }
.chart-track { position: relative; height: 22px; background: var(--tint); border-radius: 6px; }
.chart-bar { position: absolute; inset: 0 auto 0 0; border-radius: 6px; min-width: 4px; }
.chart-bar.ok { background: var(--ok); }
.chart-bar.warning { background: #d98a00; }
.chart-bar.no { background: var(--bad); }
.chart-limits { position: absolute; inset: 0 0 0 84px; pointer-events: none; }
.chart-limit { position: absolute; top: -4px; bottom: 14px; border-left: 3px dashed var(--violet); }
.chart-limit.vram { border-left-color: var(--cyan-deep); }
.chart-limit span { position: absolute; bottom: -18px; left: 4px; white-space: nowrap; font-size: 0.72rem; font-weight: 700; color: var(--violet); }
.chart-limit.vram span { color: var(--cyan-deep); }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 0 16px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.data-table th, .data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table thead th { background: var(--tint); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.data-table tbody th { font-weight: 700; }
.verdict { font-weight: 700; }
.verdict.ok { color: var(--ok); }
.verdict.warning { color: var(--warn); }
.verdict.no { color: var(--bad); }
.disclaimer { margin: 28px 0 0; padding: 18px 22px; border-radius: 12px; background: rgba(255, 169, 77, 0.12); border: 1px solid rgba(255, 169, 77, 0.55); color: #ffe7cc; }
.disclaimer strong { color: var(--orange); }

/* Accès, open source */
.access-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.access-card { display: flex; flex-direction: column; }
.access-card .button-row { margin-top: auto; padding-top: 12px; }
.access-card > .btn { align-self: flex-start; margin-top: auto; }
.install-label { margin-bottom: 8px; font-weight: 600; }
.code-block { display: flex; gap: 8px; align-items: stretch; margin-bottom: 20px; }
.code-block pre { flex: 1; margin: 0; background: var(--night); color: #d6dcf5; padding: 14px 16px; border-radius: 10px; overflow-x: auto; font-size: 0.85rem; }
.code-block code { background: none; padding: 0; color: inherit; }
.spec-list { display: grid; gap: 0; margin: 0; }
.spec-list div { display: grid; grid-template-columns: 150px 1fr; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.spec-list dt { font-weight: 700; }
.spec-list dd { margin: 0; color: var(--muted); }
.link-list { list-style: none; display: grid; gap: 4px; }
.link-list a { display: block; padding: 12px 4px; font-weight: 600; border-bottom: 1px solid var(--line); text-decoration: none; }
.link-list a::after { content: ' →'; }
.link-card { padding: 28px; }

/* Page d'installation */
.hero :not(pre) > code, .cta :not(pre) > code { background: rgba(255, 255, 255, 0.14); color: #fff; }
.page-hero { padding: 64px 0 56px; }
.page-hero .lead { margin-bottom: 28px; }
.install-box { max-width: 880px; }
.install-box .install-label { color: #cdd3ea; margin-bottom: 8px; }
.code-block-dark pre { background: #050814; border: 1px solid rgba(255, 255, 255, 0.18); font-size: 0.95rem; }
.code-block pre { white-space: pre-wrap; overflow-wrap: anywhere; }
.install-meta { margin: 0; font-size: 0.92rem; color: #aab2d0; }
.install-steps { list-style: none; counter-reset: step; display: grid; gap: 20px; max-width: 820px; }
.install-steps > li { counter-increment: step; position: relative; padding: 4px 0 4px 56px; }
.install-steps > li::before { content: counter(step); position: absolute; left: 0; top: 2px; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; background: var(--violet); color: #fff; font-weight: 800; }
.install-steps h3 { margin-bottom: 0.3em; }
.plain-steps { margin: 0 0 16px 1.2em; display: grid; gap: 8px; }
.manage-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-bottom: 24px; }
.manage-grid .card, .manual-card { box-shadow: none; }
.manage-grid .code-block { flex-direction: column; margin-bottom: 12px; }
.manual-card .button-row { margin: 8px 0 20px; }

/* CTA et pied de page */
.cta { background: radial-gradient(900px 400px at 50% 0%, rgba(139, 125, 255, 0.4), transparent 70%), var(--night); color: #fff; text-align: center; padding: 88px 0; }
.cta-inner h2 { max-width: 20ch; margin-inline: auto; }
.cta .lead { margin-inline: auto; }
.site-footer { background: #070b18; color: #aab2d0; padding: 48px 0 32px; font-size: 0.95rem; }
.site-footer a { color: #cfd5f0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; }
.footer-grid .brand { color: #fff; }
.footer-links { list-style: none; display: grid; gap: 6px; }
.footer-small { grid-column: 1 / -1; font-size: 0.85rem; border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 20px; margin: 0; }

/* Éléments de grille : ne jamais élargir la piste à cause d'un tableau ou d'une commande */
.hero-grid > *, .split > *, .manage-grid > *, .access-grid > *, .params-grid > *, .four-grid > *, .audience-grid > * { min-width: 0; }

/* Tablette et mobile */
@media (max-width: 1279px) {
  .menu-toggle { display: inline-flex; }
  .site-nav { display: none; position: absolute; inset: 68px 0 auto 0; flex-direction: column; align-items: stretch; gap: 12px; padding: 16px; background: var(--night); border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
  .site-nav.open { display: flex; }
  .site-nav ul { flex-direction: column; }
  .site-nav ul a { padding: 12px; font-size: 1.05rem; }
  .nav-actions { flex-direction: column; }
  .nav-actions .btn { width: 100%; }
}
@media (max-width: 980px) {
  .hero-grid, .split, .access-grid, .params-grid { grid-template-columns: minmax(0, 1fr); }
  .split-reverse .split-copy, .split-reverse .shot { order: initial; }
  .four-grid, .audience-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .manage-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .hero { padding-top: 36px; }
  .facts, .four-grid, .audience-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .spec-list div { grid-template-columns: 1fr; gap: 2px; }
  .card { padding: 20px; }
  .button-row .btn { width: 100%; white-space: normal; text-align: center; }
  .code-block { flex-direction: column; }
  .chart-row { grid-template-columns: 58px 1fr; }
  .chart-limits { inset: 0 0 0 70px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .btn:hover { transform: none; }
}
@media (forced-colors: active) {
  .btn { border-color: ButtonText; }
  .chart-bar { forced-color-adjust: none; }
}