/* EXSYS Hardware — page d'accueil
   Motif : l'encoche demi-lune du SSD M.2 2280, reprise sur le flanc gauche de chaque bouton. */

:root {
  --ground: #333333;
  --surface-1: #3c3c3c;
  --surface-2: #474747;
  --ink: #e2e2e2;          /* gris clair, discret */
  --muted: #ababab;
  --accent: #E95420;       /* orange Ubuntu */
  --accent-text: #ff8a5c;  /* orange lisible en petit corps sur fond gris */
  --on-accent: #1c1c1c;

  --font: "Bai Jamjuree", system-ui, sans-serif;
  --step-display: clamp(52px, 6.6vw, 104px);
  --step-h2: clamp(36px, 4.2vw, 64px);
  --step-h3: clamp(24px, 2.4vw, 36px);
  --step-body: 18px;
  --step-small: 15px;

  --margin: clamp(16px, 3vw, 40px);
  --gap-section: clamp(120px, 13vw, 190px);
  --ease-out: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--step-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -0.03em; line-height: 1; color: var(--ink); }
p { margin: 0; }
figure { margin: 0; }
::selection { background: var(--accent); color: var(--on-accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
[id] { scroll-margin-top: 24px; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- Marque ---------- */
.w-light { font-weight: 400; }
.w-bold { font-weight: 700; }
.w-accent { font-weight: 600; color: var(--accent); }

/* ---------- Motif : encoche demi-lune, à gauche, centrée verticalement ---------- */
.btn-notch {
  --notch-r: 9px;
  /* masque de découpe (forme), pas un dégradé de couleur */
  -webkit-mask: radial-gradient(circle at 0 50%, #0000 var(--notch-r), #000 calc(var(--notch-r) + .5px)); /* taste-skill-ignore */
          mask: radial-gradient(circle at 0 50%, #0000 var(--notch-r), #000 calc(var(--notch-r) + .5px)); /* taste-skill-ignore */
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 56px; padding: 0 30px 0 36px;
  background: var(--accent); color: var(--on-accent);
  font: 600 var(--step-body)/1 var(--font); text-decoration: none;
  transition: transform .18s var(--ease-out), background-color .18s;
}
.btn:hover { background: #f2652f; }
.btn:active { transform: scale(.97); }
.btn-small { min-height: 42px; padding: 0 20px 0 26px; font-size: 15px; --notch-r: 7px; }
.btn-dark { background: var(--on-accent); color: var(--ink); }
.btn-dark:hover { background: #000; }

/* ---------- Barre ---------- */
.bar {
  position: relative; z-index: 10;
  display: flex; align-items: center; gap: 32px;
  padding: 20px var(--margin);
  background: var(--ground);
}
.wordmark { font-size: 24px; text-decoration: none; letter-spacing: 0.02em; white-space: nowrap; }
.bar nav { margin-left: auto; }
.nav-links { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 500; white-space: nowrap;
  transition: color .15s;
}
.nav-links a:hover { color: var(--accent-text); }

/* ---------- 1. Intro ---------- */
.hero {
  min-height: calc(100svh - 82px);
  display: grid; grid-template-columns: 5fr 7fr; align-items: center; gap: 40px;
  padding: 0 0 0 var(--margin);
}
.hero-text { padding: 64px 0 80px; }
.hero h1 { font-size: var(--step-display); }
.hero-lead { margin-top: 36px; max-width: 34ch; }
.hero .btn { margin-top: 40px; }
.hero-photo { align-self: stretch; overflow: hidden; min-height: calc(100svh - 82px); }
.hero-photo img {
  width: 100%; height: 100%; object-fit: cover; object-position: 45% 40%;
  animation: hero-in 1.6s var(--ease-out) both;
}
@keyframes hero-in { from { opacity: 0; transform: scale(1.08); } to { opacity: 1; transform: none; } }

/* ---------- 2. Séries ---------- */
.series {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 24px;
  margin-top: var(--gap-section);
  padding: 64px var(--margin) 48px;
  background: var(--surface-1);
}
.tab-input { position: absolute; opacity: 0; pointer-events: none; }
.series-head { grid-column: 1 / -1; display: flex; align-items: center; gap: 24px 48px; flex-wrap: wrap; }
.series-title { font-size: var(--step-h2); }
.tabs { display: flex; gap: 8px; }
.tabs label {
  cursor: pointer; padding: 14px 20px; min-height: 48px;
  font-size: 16px; font-weight: 600; letter-spacing: 0.02em;
  background: var(--surface-2); color: var(--ink);
  transition: background-color .15s, color .15s;
}
.tabs label:hover { background: #525252; }
#tab-adv:checked ~ .series-head label[for="tab-adv"],
#tab-nas:checked ~ .series-head label[for="tab-nas"] { background: var(--accent); color: var(--on-accent); }
#tab-adv:focus-visible ~ .series-head label[for="tab-adv"],
#tab-nas:focus-visible ~ .series-head label[for="tab-nas"] { outline: 3px solid var(--accent); outline-offset: 3px; }

.series-photo { grid-column: 1 / 9; grid-row: 2 / span 2; align-self: center; margin: 56px 0; }
.series-photo img { width: 100%; height: auto; }
.photo-nas { display: none; }
#tab-nas:checked ~ .series-photo .photo-adv { display: none; }
#tab-nas:checked ~ .series-photo .photo-nas { display: block; }

.panel { grid-column: 9 / 13; grid-row: 2; align-self: end; display: none; padding-top: 56px; }
#tab-adv:checked ~ .panel-adv,
#tab-nas:checked ~ .panel-nas { display: block; }
.series-name { font-size: var(--step-h3); }
.series-desc { margin-top: 20px; max-width: 38ch; }
.figures { display: flex; flex-wrap: wrap; gap: 24px 40px; margin: 40px 0 0; }
.figures div { display: flex; flex-direction: column-reverse; }
.figures dt { color: var(--muted); font-size: var(--step-small); margin-top: 6px; }
.figures dd { margin: 0; font-size: clamp(30px, 3.2vw, 48px); font-weight: 700; line-height: 1; letter-spacing: -0.03em; white-space: nowrap; }
.figures dd span { font-size: var(--step-body); font-weight: 600; color: var(--accent-text); letter-spacing: 0; }

.cells { grid-column: 9 / 13; grid-row: 3; align-self: start; display: grid; grid-template-columns: 1fr; gap: 8px; margin-top: 40px; }
.cell {
  --notch-r: 10px;
  display: flex; align-items: center; padding: 0 24px 0 32px; min-height: 64px;
  font-weight: 600; text-decoration: none;
  transition: background-color .15s, transform .18s var(--ease-out);
}
.cell:active { transform: scale(.98); }
.cell-ink { background: var(--accent); color: var(--on-accent); }
.cell-ink:hover { background: #f2652f; }
.cell-tone { background: var(--surface-2); color: var(--ink); }
.cell-tone:hover { background: #525252; }

/* ---------- 3. Caractéristiques ---------- */
.specs {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 24px;
  padding: var(--gap-section) var(--margin) 0;
}
.specs-head { grid-column: 1 / 5; }
.specs-title { font-size: var(--step-h2); }
.common { margin: 48px 0 0; display: grid; gap: 20px; }
.common div { display: flex; flex-direction: column; }
.common dt { color: var(--muted); font-size: var(--step-small); }
.common dd { margin: 2px 0 0; font-size: 24px; font-weight: 600; }
.specs-tables { grid-column: 6 / 13; display: grid; gap: 64px; }
.range-name { font-size: var(--step-h3); }
.range-name span { display: block; margin-top: 8px; font-size: var(--step-body); font-weight: 500; color: var(--muted); letter-spacing: 0; }
.range table { margin-top: 20px; }
table { width: 100%; border-collapse: collapse; font-size: var(--step-body); font-variant-numeric: tabular-nums; }
th, td { padding: 14px 16px; text-align: left; font-weight: 400; vertical-align: baseline; }
thead th { color: var(--muted); font-size: var(--step-small); padding-top: 0; padding-bottom: 10px; }
tbody tr:nth-child(odd) { background: var(--surface-1); }
tbody th { color: var(--ink); font-weight: 600; width: 30%; }
td { color: var(--ink); }
td:last-child { text-align: right; }
td a { text-decoration: none; color: var(--accent-text); font-weight: 600; }
td a:hover { text-decoration: underline; text-underline-offset: 4px; }
.tbw-link { color: var(--accent-text); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 4. Fiabilité ---------- */
.trust { padding: var(--gap-section) var(--margin) 0; }
.trust-intro { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; align-items: end; }
.trust-intro h2 { grid-column: 1 / -1; font-size: var(--step-h2); max-width: 22ch; }
.trust-intro p { grid-column: 7 / 13; margin-top: 16px; }
.trust-grid {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 24px;
  margin-top: 80px; align-items: start;
}
.calc { grid-column: 1 / 7; background: var(--surface-1); padding: 40px; position: sticky; top: 24px; }
.calc-title { font-size: var(--step-h3); line-height: 1.1; letter-spacing: -0.02em; }
.calc-label { display: block; margin-top: 24px; }
.calc-label output { color: var(--accent-text); font-weight: 700; }
input[type="range"] {
  width: 100%; margin: 12px 0 0; height: 44px; background: transparent;
  -webkit-appearance: none; appearance: none; accent-color: var(--accent);
}
input[type="range"]::-webkit-slider-runnable-track { height: 6px; background: var(--surface-2); }
input[type="range"]::-moz-range-track { height: 6px; background: var(--surface-2); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 28px; height: 28px; margin-top: -11px;
  background: var(--accent); border: 0; border-radius: 0;
}
input[type="range"]::-moz-range-thumb { width: 28px; height: 28px; background: var(--accent); border: 0; border-radius: 0; }
.presets { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.presets.cap { margin-top: 28px; }
.presets button {
  font: 500 15px/1 var(--font); color: var(--ink);
  background: var(--surface-2); border: 0; padding: 12px 14px; min-height: 44px; cursor: pointer;
  transition: background-color .15s, transform .15s var(--ease-out);
}
.presets.cap button { min-width: 72px; font-weight: 600; }
.presets button:hover { background: #555; }
.presets button:active { transform: scale(.96); }
.presets button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }
.years { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 36px; }
.years p { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 8px; }
.years-num { font-size: var(--step-h2); font-weight: 700; line-height: 1; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.years-unit { font-weight: 600; color: var(--accent-text); }
.years-name { flex-basis: 100%; color: var(--muted); font-size: var(--step-small); margin-top: 6px; }
.calc-note { margin-top: 28px; color: var(--muted); font-size: var(--step-small); }

.tbw { grid-column: 8 / 13; }
.tbw img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.tbw-title { margin-top: 40px; font-size: var(--step-h3); }
.tbw p { margin-top: 18px; max-width: 52ch; }
.tbw strong { color: var(--accent-text); font-weight: 600; }

/* ---------- 5. Sélection ---------- */
.select { padding: var(--gap-section) var(--margin) 0; }
.select-intro { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; align-items: start; }
.select-intro h2 { grid-column: 1 / 8; font-size: var(--step-h2); }
.select-intro p { grid-column: 9 / 13; }
.stages { display: flex; height: 520px; margin-top: 64px; }
.stage { flex: 0 0 9%; position: relative; overflow: hidden; transition: flex-basis .45s var(--ease-out); }
.stage[open] { flex: 1 1 58%; }
.s1 { background: #4a2a1c; color: #efefef; }
.s2 { background: #6b3219; color: #efefef; }
.s3 { background: #943d17; color: #f4f4f4; }
.s4 { background: #c04714; color: #ffffff; }
.s5 { background: #E95420; color: var(--on-accent); }
.stage summary {
  list-style: none; cursor: pointer; position: absolute; inset: 0;
  font-size: var(--step-body); font-weight: 700;
}
.stage summary::-webkit-details-marker { display: none; }
.stage:not([open]) summary {
  writing-mode: vertical-rl; transform: rotate(180deg);
  padding: 28px 0 0; display: flex; align-items: flex-start; justify-content: flex-start;
  padding-right: calc(50% - 12px);
}
.stage:not([open]):hover { filter: brightness(1.12); }
.stage[open] summary { position: absolute; inset: 32px auto auto 32px; font-size: var(--step-h3); letter-spacing: -0.03em; cursor: default; }
.stage-body {
  position: absolute; inset: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
  padding: 32px; padding-top: 110px;
}
.stage-body p { align-self: end; max-width: 36ch; }
.stage-body img { width: 100%; height: 100%; object-fit: cover; grid-column: 2; grid-row: 1; }
.stage-body:not(:has(img)) p { grid-column: 1 / -1; }

/* ---------- 6. Questions ---------- */
.faq {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px;
  padding: var(--gap-section) var(--margin) 0; align-items: start;
}
.faq-side { grid-column: 1 / 5; position: sticky; top: 40px; }
.faq-title { font-size: var(--step-h2); }
.faq-side img { margin-top: 40px; width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.faq-list { grid-column: 5 / 13; display: grid; gap: 8px; }
.tile { background: var(--surface-1); transition: background-color .2s; }
.tile summary {
  list-style: none; cursor: pointer; min-height: 72px; padding: 20px 64px 20px 24px;
  display: flex; align-items: center; font-size: var(--step-body); font-weight: 600; position: relative;
}
.tile summary::-webkit-details-marker { display: none; }
.tile summary::before, .tile summary::after {
  content: ""; position: absolute; right: 24px; top: 50%; width: 16px; height: 3px;
  background: currentColor; transition: transform .25s var(--ease-out);
}
.tile summary::after { transform: rotate(90deg); }
.tile:not([open]) summary:hover { background: var(--surface-2); }
.tile[open] { background: var(--accent); color: var(--on-accent); }
.tile[open] summary::after { transform: rotate(0deg); }
.tile p { padding: 0 24px 24px; max-width: 52ch; }
.tile a { font-weight: 600; }

/* ---------- 7. Amazon ---------- */
.cta { padding-top: var(--gap-section); overflow: hidden; }
.cta-row {
  display: grid; grid-template-columns: 1fr 4fr 1fr; gap: 12px;
  height: 360px; margin: 0 calc(-1 * 6vw);
}
.cta-flank { overflow: hidden; }
.cta-photo img { width: 100%; height: 100%; object-fit: cover; animation: drift 18s ease-in-out infinite alternate; }
@keyframes drift { from { transform: scale(1.06) translateX(-2%); } to { transform: scale(1.12) translateX(2%); } }
.cta-flat { background: var(--surface-2); }
.cta-main {
  background: var(--accent); color: var(--on-accent);
  display: flex; flex-direction: column; justify-content: center; align-items: flex-start;
  padding: 40px;
}
.cta-main h2 { font-size: var(--step-h3); color: var(--on-accent); max-width: 18ch; }
.cta-main p { margin-top: 20px; max-width: 44ch; }
.cta-main .btn { margin-top: 28px; }

/* ---------- Pied de page ---------- */
.foot { margin-top: 120px; background: #2a2a2a; padding: 64px var(--margin) 32px; }
.foot-cols { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.foot-cols ul { grid-column: span 2; list-style: none; margin: 0; padding: 0; font-size: var(--step-small); display: grid; gap: 8px; align-content: start; }
.foot-cols a { color: var(--ink); text-decoration: none; }
.foot-cols a:hover { color: var(--accent-text); }
.foot-contact { grid-column: 9 / 13; font-style: normal; font-size: var(--step-small); color: var(--ink); }
.foot-contact .w-accent { color: var(--accent-text); }
.credits { margin-top: 48px; font-size: var(--step-small); color: var(--muted); max-width: 120ch; }
.credits a { color: var(--ink); }
.foot-last { display: flex; justify-content: space-between; align-items: center; margin-top: 32px; font-size: var(--step-small); color: var(--muted); }

/* ---------- Mouvement ---------- */
.js .reveal { opacity: 0; transform: translateY(24px); }
.js .reveal.in { opacity: 1; transform: none; transition: opacity .7s var(--ease-out), transform .7s var(--ease-out); transition-delay: var(--d, 0ms); }
.js .shutter img { opacity: 0; transform: translateX(6%); }
.js .shutter.in img { opacity: 1; transform: none; transition: opacity .8s var(--ease-out), transform 1s var(--ease-out); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .js .reveal.in, .js .shutter img, .js .shutter.in img { opacity: 1; transform: none; transition: opacity .3s; }
  .hero-photo img, .cta-photo img { animation: none; }
  .stage { transition: none; }
}

/* ---------- Tablette ---------- */
@media (max-width: 1180px) {
  .bar > .btn { display: none; }
  .nav-links { gap: 20px; }
}
@media (max-width: 1024px) {
  .nav-links li:nth-child(n+4) { display: none; }
  .hero { grid-template-columns: 1fr 1fr; }
  .series-photo { grid-column: 1 / -1; grid-row: auto; margin: 48px 0 40px; }
  .panel { grid-column: 1 / -1; grid-row: auto; padding-top: 0; }
  .figures { margin-top: 32px; }
  .cells { grid-column: 1 / -1; grid-row: auto; grid-template-columns: 1fr 1fr; }
  .specs-head { grid-column: 1 / -1; }
  .common { grid-template-columns: repeat(4, auto); margin-top: 32px; }
  .specs-tables { grid-column: 1 / -1; margin-top: 64px; }
  .trust-intro h2, .trust-intro p { grid-column: 1 / -1; }
  .calc { grid-column: 1 / -1; position: static; }
  .tbw { grid-column: 1 / -1; margin-top: 64px; display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
  .tbw img { grid-column: 2; grid-row: 1 / span 6; align-self: start; }
  .tbw-title { margin-top: 0; grid-column: 1; }
  .tbw p { grid-column: 1; }
  .select-intro h2, .select-intro p { grid-column: 1 / -1; }
  .faq-side { grid-column: 1 / -1; position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: end; }
  .faq-side img { margin-top: 0; }
  .faq-list { grid-column: 1 / -1; }
}

/* ---------- Téléphone ---------- */
@media (max-width: 720px) {
  .bar { padding: 16px var(--margin); gap: 16px; }
  .wordmark { font-size: 18px; }
  .wordmark .w-accent { color: var(--accent-text); }
  .nav-links li:not(:first-child) { display: none; }

  .hero { grid-template-columns: 1fr; gap: 0; padding: 0; min-height: 0; }
  .hero-text { padding: 40px var(--margin) 40px; }
  .hero h1 { font-size: 13vw; }
  .hero-lead { margin-top: 24px; }
  .hero .btn { margin-top: 28px; }
  .hero-photo { min-height: 0; aspect-ratio: 4 / 3; }

  .series { padding: 40px 16px 16px; }
  .tabs { width: 100%; }
  .tabs label { flex: 1; text-align: center; font-size: 14px; padding: 14px 8px; }
  .series-photo { margin: 32px 0; }
  .figures { gap: 20px 32px; }
  .cells { grid-template-columns: 1fr; margin-top: 32px; }
  .cell { min-height: 60px; }

  .common { grid-template-columns: 1fr 1fr; }
  .specs-tables { gap: 48px; margin-top: 48px; }
  table { font-size: 16px; }
  th, td { padding: 12px 10px; }
  td a { white-space: nowrap; }

  .trust-intro h2 { font-size: 8.4vw; }
  .trust-grid { margin-top: 48px; }
  .calc { padding: 24px 16px; margin: 0 -16px; }
  .years { gap: 16px; }
  .tbw { display: block; }
  .tbw-title { margin-top: 32px; }

  .select-intro h2 { font-size: 9vw; }
  .stages { flex-direction: column; height: auto; margin-top: 40px; }
  .stage { flex: none; min-height: 64px; }
  .stage[open] { flex: none; }
  .stage summary, .stage:not([open]) summary, .stage[open] summary {
    position: static; writing-mode: horizontal-tb; transform: none;
    padding: 20px 16px; font-size: var(--step-body); min-height: 64px; display: flex; align-items: center;
  }
  .stage[open] summary { font-size: 24px; }
  .stage-body { position: static; display: block; padding: 0 16px 20px; }
  .stage-body img { margin-top: 16px; aspect-ratio: 3 / 2; height: auto; }

  .faq-title { font-size: 9vw; }
  .faq-side { grid-template-columns: 1fr; }
  .faq-side img { width: 60%; margin-left: auto; }
  .faq-list { gap: 6px; }
  .tile summary { min-height: 64px; }
  .tile p { padding: 0 20px 20px; }

  .cta-row { grid-template-columns: 1fr 1fr; grid-template-rows: auto 120px; height: auto; margin: 0 var(--margin); gap: 8px; }
  .cta-main { grid-column: 1 / -1; grid-row: 1; min-height: 300px; padding: 28px 20px; }
  .cta-photo { grid-row: 2; grid-column: 1; }
  .cta-flat { grid-row: 2; grid-column: 2; }

  .foot { margin-top: 96px; }
  .foot-cols { grid-template-columns: 1fr 1fr; }
  .foot-cols ul { grid-column: span 1; }
  .foot-contact { grid-column: 1 / -1; }
  .foot-last { gap: 16px; }
}