:root {
  --blue: #3948aa;
  --blue-dark: #283799;
  --navy: #161f5c;
  --sky: #9db8cc;
  --sky-light: #eaf0f6;
  --bg: #f8f8f8;
  --white: #fff;
  --text: #3d4257;
  --muted: #6b7086;
  --line: #dfe3ee;
  --accent: #ffc83d;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(22, 31, 92, .10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; font-family: "Open Sans", Helvetica, Arial, sans-serif; font-size: 16px; line-height: 1.65; color: var(--text); background: var(--white); }
img { max-width: 100%; display: block; }
h1, h2, h3 { font-family: Comfortaa, "Open Sans", sans-serif; color: var(--navy); line-height: 1.2; margin: 0 0 .5em; text-wrap: balance; }
h1 { font-size: clamp(2rem, 4.4vw, 3.3rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 700; }
p { margin: 0 0 1em; }
a { color: var(--blue-dark); }
.wrap { width: min(1180px, 100% - 40px); margin-inline: auto; }
.narrow { width: min(800px, 100% - 40px); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.eyebrow { font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--blue); margin-bottom: .8em; }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 56ch; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 26px; border-radius: 999px; border: 2px solid transparent; font: 700 1rem "Open Sans", sans-serif; text-decoration: none; cursor: pointer; transition: transform .15s, box-shadow .15s, background .15s; }
.btn:hover { transform: translateY(-2px); }
.btn-sm { padding: 9px 18px; font-size: .9rem; }
.btn-primary { background: var(--blue-dark); color: #fff; }
.btn-primary:hover { background: var(--navy); }
.btn-accent { background: var(--accent); color: var(--navy); box-shadow: 0 6px 18px rgba(255, 200, 61, .45); }
.btn-ghost { background: transparent; color: var(--blue-dark); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue); }
.btn[disabled] { opacity: .4; pointer-events: none; }
.link { background: none; border: 0; padding: 0; font: 700 .92rem "Open Sans", sans-serif; color: var(--blue-dark); cursor: pointer; text-align: left; }
.link::after { content: " →"; }
.link:hover { text-decoration: underline; }

/* Header */
.topbar { background: var(--navy); color: #fff; font-size: .85rem; }
.topbar-in { display: flex; justify-content: space-between; gap: 16px; padding: 7px 0; }
.topbar a { color: #fff; font-weight: 700; text-decoration: none; }
.header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header-in { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 10px 0; }
.logo img { height: 54px; width: auto; }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a { white-space: nowrap; }
.nav a:not(.btn) { color: var(--navy); text-decoration: none; font-weight: 600; font-size: .95rem; }
.nav a:not(.btn):hover { color: var(--blue); }
.burger { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.burger span { display: block; width: 24px; height: 3px; background: var(--blue-dark); margin: 4px 0; border-radius: 2px; }

/* Hero : les bandes reprennent la pyramide rayée du logo */
.hero { background:
    repeating-linear-gradient(180deg, transparent 0 18px, rgba(57, 72, 170, .028) 18px 28px),
    linear-gradient(180deg, var(--sky-light), #fff 85%);
  padding: 64px 0 0; }
.hero-in { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero-visual { position: relative; }
.hero-visual img { border-radius: 22px; box-shadow: var(--shadow); width: 100%; height: 100%; object-fit: cover; aspect-ratio: 5 / 4; }
.hero-badge { position: absolute; left: -18px; bottom: 26px; background: var(--blue-dark); color: #fff; padding: 14px 18px; border-radius: var(--radius); display: flex; align-items: center; gap: 12px; max-width: 250px; box-shadow: var(--shadow); font-size: .85rem; line-height: 1.35; }
.hero-badge strong { font: 700 1.7rem Comfortaa, sans-serif; white-space: nowrap; color: var(--accent); }
.trust { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-top: 56px; transform: translateY(40px); box-shadow: var(--shadow); }
.trust div { background: #fff; padding: 20px 22px; }
.trust strong { display: block; color: var(--navy); font-family: Comfortaa, sans-serif; }
.trust span { font-size: .87rem; color: var(--muted); }

/* Sections */
.section { padding: 96px 0; }
.section.alt { background: var(--bg); }
.section-head { max-width: 720px; margin-bottom: 40px; }
.section-head p:last-child { color: var(--muted); }
.config-section { padding-top: 130px; }

/* Configurateur */
.config { display: grid; grid-template-columns: 1fr 340px; gap: 28px; align-items: start; }
.config-main { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 28px; box-shadow: var(--shadow); min-width: 0; }
.steps { list-style: none; display: flex; gap: 6px; padding: 0; margin: 0 0 28px; }
.steps li { flex: 1; }
.steps button { width: 100%; background: none; border: 0; border-top: 5px solid var(--line); padding: 10px 0 0; text-align: left; font: 600 .8rem "Open Sans", sans-serif; color: var(--muted); cursor: pointer; }
.steps li.done button { border-color: var(--sky); color: var(--blue-dark); }
.steps li.current button { border-color: var(--blue-dark); color: var(--navy); font-weight: 700; }
.steps button[disabled] { cursor: default; }
.step-body h3 { font-size: 1.35rem; }
.step-body .hint { color: var(--muted); margin-bottom: 22px; }
.q { margin: 26px 0 10px; font-weight: 700; color: var(--navy); }
.choices { display: grid; grid-template-columns: repeat(auto-fill, minmax(165px, 1fr)); gap: 12px; }
.choices.wide { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.choice { position: relative; display: block; text-align: left; background: #fff; border: 2px solid var(--line); border-radius: var(--radius); padding: 14px 16px; cursor: pointer; font: inherit; color: var(--text); transition: border-color .15s, box-shadow .15s, transform .15s; overflow: hidden; }
.choice:hover { border-color: var(--sky); transform: translateY(-2px); }
.choice.sel { border-color: var(--blue-dark); box-shadow: 0 0 0 3px rgba(57, 72, 170, .15); background: #f6f8ff; }
.choice strong { display: block; color: var(--navy); line-height: 1.3; }
.choice small { display: block; color: var(--muted); font-size: .84rem; line-height: 1.4; margin-top: 4px; }
.choice.pic { padding: 0; }
.choice.pic img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.choice.pic span { display: block; padding: 12px 14px; }
.badge { display: inline-block; background: var(--accent); color: var(--navy); font-size: .7rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; margin-left: 6px; vertical-align: middle; }
.people { display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: center; }
.people output { font: 700 1.6rem Comfortaa, sans-serif; color: var(--blue-dark); min-width: 4.5ch; text-align: right; }
input[type=range] { width: 100%; accent-color: var(--blue-dark); height: 28px; }
.step-nav { display: flex; justify-content: space-between; margin-top: 32px; padding-top: 22px; border-top: 1px solid var(--line); }

.config-side { position: sticky; top: 96px; background: var(--navy); color: #fff; border-radius: 20px; padding: 24px; }
.config-side h3 { color: #fff; font-size: 1rem; }
.plan { background: rgba(255, 255, 255, .07); border-radius: 12px; padding: 12px; margin-bottom: 16px; }
.plan svg { width: 100%; height: auto; display: block; }
.plan-cap { font-size: .8rem; color: var(--sky); text-align: center; margin: 8px 0 0; }
.summary { margin: 0; font-size: .9rem; }
.summary div { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-top: 1px solid rgba(255, 255, 255, .13); }
.summary dt { color: var(--sky); }
.summary dd { margin: 0; text-align: right; font-weight: 600; }

/* Résultat */
.result-top { background: linear-gradient(135deg, var(--blue-dark), var(--blue)); color: #fff; border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
.result-top h3 { color: #fff; font-size: 1.5rem; margin-bottom: .2em; }
.result-top .compo { font-size: 1.05rem; margin: 0; }
.result-top .price { margin: 14px 0 0; font: 700 1.5rem Comfortaa, sans-serif; color: var(--accent); }
.result-top .price small { display: block; font: 400 .82rem "Open Sans", sans-serif; color: #dfe6ff; margin-top: 2px; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.box { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.box h4 { margin: 0 0 10px; color: var(--navy); font-family: Comfortaa, sans-serif; }
.box ul { margin: 0; padding-left: 18px; }
.box li { margin-bottom: 6px; font-size: .93rem; }
.lines { width: 100%; border-collapse: collapse; font-size: .93rem; }
.lines td { padding: 6px 0; border-bottom: 1px dashed var(--line); }
.lines td:last-child { text-align: right; white-space: nowrap; font-weight: 600; }
.result-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }

/* Cartes */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; background: var(--sky-light); }
.card-body { padding: 18px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.card-body p { font-size: .93rem; color: var(--muted); flex: 1; }
.products img { aspect-ratio: 4 / 3; }

/* Gammes */
.ranges { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.range { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.range.featured { border: 2px solid var(--blue-dark); box-shadow: var(--shadow); }
.range-tag { display: inline-block; background: var(--sky-light); color: var(--blue-dark); font-size: .78rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.range p { font-size: .93rem; color: var(--muted); }
.range table { width: 100%; border-collapse: collapse; }
.range th, .range td { padding: 10px 0; border-top: 1px solid var(--line); text-align: left; font-weight: 600; vertical-align: top; }
.range td { text-align: right; color: var(--blue-dark); font-weight: 700; white-space: nowrap; }
.range th small { display: block; font-weight: 400; color: var(--muted); }
.vitabri { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 34px; }
.vit { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.vit img { height: 150px; width: 100%; object-fit: contain; margin-bottom: 14px; }
.vit p { font-size: .93rem; color: var(--muted); margin: 0; }
.note { font-size: .85rem; color: var(--muted); margin-top: 22px; }

/* Process */
.process { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; counter-reset: p; }
.process li { position: relative; padding: 24px 20px; border-radius: var(--radius); background: var(--bg); border: 1px solid var(--line); }
.process .num { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: var(--blue-dark); color: #fff; font: 700 1.1rem Comfortaa, sans-serif; margin-bottom: 14px; }
.process p { font-size: .9rem; color: var(--muted); margin: 0; }

/* Galerie */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gallery img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: var(--radius); }

/* FAQ */
details { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 0 22px; margin-bottom: 10px; }
summary { cursor: pointer; padding: 18px 0; font-weight: 700; color: var(--navy); list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::after { content: "+"; font-size: 1.3rem; line-height: 1; color: var(--blue); }
details[open] summary::after { content: "–"; }
details p { color: var(--muted); }

/* Contact */
.contact { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
.big-phone a { font: 700 1.8rem Comfortaa, sans-serif; color: var(--blue-dark); text-decoration: none; }
.form { background: var(--bg); border: 1px solid var(--line); border-radius: 20px; padding: 28px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: block; font-weight: 600; font-size: .9rem; color: var(--navy); margin-bottom: 16px; }
.form input, .form textarea { display: block; width: 100%; margin-top: 6px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font: inherit; color: var(--text); background: #fff; }
.form input:focus, .form textarea:focus { outline: 0; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(57, 72, 170, .15); }
.form-msg { margin: 14px 0 0; font-size: .92rem; font-weight: 600; color: var(--blue-dark); }
.form-msg.err { color: #b3261e; }

.footer { background: var(--navy); color: var(--sky); font-size: .88rem; }
.footer-in { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 0; flex-wrap: wrap; }
.footer img { background: #fff; padding: 6px 10px; border-radius: 8px; height: auto; }
.footer a { color: #fff; }

@media (max-width: 860px) {
  .hero-in, .config, .contact { grid-template-columns: 1fr; }
  .config-side { position: static; }
  .cards, .ranges, .vitabri { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .trust { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 861px) and (max-width: 1100px) {
  .config { grid-template-columns: 1fr 300px; }
  .process { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1100px) {
  .burger { display: block; }
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; align-items: flex-start; padding: 18px 20px 24px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .hero-badge { left: 12px; }
}
@media (max-width: 620px) {
  .section { padding: 64px 0; }
  .cards, .ranges, .vitabri, .process, .result-grid, .form .row { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .trust { grid-template-columns: 1fr; }
  .topbar-in span { display: none; }
  .topbar-in { justify-content: center; }
  .config-main { padding: 18px; }
  .steps button { font-size: 0; }
  .choices { grid-template-columns: repeat(2, 1fr); }
  .choices.wide { grid-template-columns: 1fr; }
  .step-nav .btn { padding: 12px 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}