/* STONE-ENTERPRISE — site vitrine */
:root {
  --stone-900: #1c2127;
  --stone-800: #262c33;
  --stone-700: #353d46;
  --stone-500: #6b7682;
  --stone-300: #c9d0d7;
  --stone-100: #eef1f4;
  --stone-50:  #f6f7f9;
  --white: #ffffff;
  --ink: #1c2127;
  --muted: #5b6570;
  --line: #e2e6ea;

  --accent: #7489ff;        /* violet du logo */
  --accent-deep: #4f63e0;
  --health: #1f5fa8;        /* Stone-Health */
  --health-soft: #e7eff9;
  --eden: #1d7a6c;          /* Eden */
  --eden-soft: #e3f2ef;

  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 1px 2px rgba(28,33,39,.06), 0 8px 24px rgba(28,33,39,.06);
  --shadow-lg: 0 24px 60px rgba(28,33,39,.18);

  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --wrap: 1180px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--stone-50);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.15; margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); }
h3 { font-size: 1.2rem; }
p { margin: 0; }
.icon { width: 1em; height: 1em; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--white); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 12px; }

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

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .25s, box-shadow .25s, backdrop-filter .25s;
}
.header.is-scrolled { background: rgba(28,33,39,.92); backdrop-filter: blur(10px); box-shadow: 0 1px 0 rgba(255,255,255,.06); }
.header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--white); }
.brand img { width: 44px; height: 44px; }
.brand span { font-family: var(--serif); font-weight: 700; font-size: 1.12rem; letter-spacing: .02em; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { color: rgba(255,255,255,.8); text-decoration: none; font-size: .93rem; font-weight: 600; padding: 8px 12px; border-radius: 8px; transition: color .2s, background .2s; }
.nav a:hover { color: var(--white); background: rgba(255,255,255,.07); }
.nav .btn { margin-left: 8px; }
.menu-btn { display: none; background: none; border: 0; color: var(--white); font-size: 26px; padding: 8px; cursor: pointer; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--sans); font-weight: 700; font-size: .95rem;
  padding: 13px 22px; border-radius: 12px; border: 0; cursor: pointer;
  text-decoration: none; transition: transform .15s, background .2s, box-shadow .2s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--stone-900); }
.btn-primary:hover { background: #8a9bff; box-shadow: 0 10px 30px rgba(116,137,255,.35); }
.btn-ghost { background: rgba(255,255,255,.08); color: var(--white); box-shadow: inset 0 0 0 1px rgba(255,255,255,.18); }
.btn-ghost:hover { background: rgba(255,255,255,.14); }
.nav .btn { padding: 10px 16px; color: var(--stone-900); }
.nav .btn:hover { background: #8a9bff; color: var(--stone-900); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--stone-900); color: var(--white);
  padding: 150px 0 110px;
}
.hero::before {
  content: ""; position: absolute; width: 780px; height: 780px; right: -220px; bottom: -380px;
  border-radius: 50%; background: radial-gradient(circle at 35% 35%, #2a64b3, #1f4f8f 55%, transparent 56%);
  opacity: .9;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 22px 22px; mask-image: linear-gradient(90deg, #000 0%, transparent 60%);
  -webkit-mask-image: linear-gradient(90deg, #000 0%, transparent 60%);
}
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.3rem); margin: 18px 0 20px; }
.hero h1 em { font-style: italic; font-weight: 500; color: #b9c3ff; }
.hero .lead { font-size: 1.15rem; color: rgba(255,255,255,.78); max-width: 34em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 40px; color: rgba(255,255,255,.6); font-size: .9rem; }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-visual { position: relative; display: flex; justify-content: center; }
.hero-logo {
  width: min(360px, 80%); aspect-ratio: 1; padding: 34px;
  border-radius: 40px; background: rgba(255,255,255,.04);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.08), var(--shadow-lg);
  backdrop-filter: blur(4px);
}
.hero-logo img { width: 100%; height: 100%; object-fit: contain; }

/* ---------- Sections ---------- */
.section { padding: 100px 0; }
.section-alt { background: var(--white); }
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head .eyebrow { color: var(--accent-deep); }
.section-head h2 { margin-top: 12px; }
.section-head p { margin-top: 16px; color: var(--muted); font-size: 1.08rem; }
.center { text-align: center; margin-left: auto; margin-right: auto; }

.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.ico {
  display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 12px;
  background: var(--stone-800); color: var(--white); font-size: 22px;
}
.ico.health { background: var(--health); }
.ico.eden { background: var(--eden); }
.ico.soft { background: var(--stone-100); color: var(--stone-800); }

/* About */
.about { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.facts { display: grid; gap: 14px; }
.fact { display: flex; gap: 16px; align-items: center; }
.fact small { display: block; color: var(--muted); font-size: .8rem; font-weight: 600; }
.fact strong { font-size: 1.05rem; }
.mv { display: grid; gap: 16px; }
.mv .card { display: flex; gap: 18px; }
.mv h3 { color: var(--health); font-family: var(--sans); font-size: 1.05rem; font-weight: 800; margin-bottom: 6px; }
.mv p { color: var(--muted); }
.values { margin-top: 28px; }
.values h3 { font-family: var(--sans); font-size: .95rem; font-weight: 800; margin-bottom: 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 999px; background: var(--health-soft); color: var(--health); font-weight: 700; font-size: .9rem; }
.chip.eden { background: var(--eden-soft); color: var(--eden); }
.chip.neutral { background: var(--stone-100); color: var(--stone-800); }

/* Problem */
.problem { display: grid; grid-template-columns: repeat(2, 1fr) 1.1fr; gap: 18px; }
.problem .card h3 { font-family: var(--sans); font-size: 1.05rem; font-weight: 800; margin: 18px 0 6px; }
.problem .card p { color: var(--muted); font-size: .95rem; }
.problem .result {
  grid-column: 3; grid-row: 1 / span 2; background: var(--stone-800); color: var(--white);
  border-radius: var(--radius); padding: 34px; display: flex; flex-direction: column; justify-content: center;
}
.problem .result .ico { background: var(--health); }
.problem .result small { margin-top: 26px; text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; color: rgba(255,255,255,.6); font-weight: 700; }
.problem .result p { font-family: var(--serif); font-style: italic; font-size: 1.5rem; line-height: 1.35; margin-top: 10px; }

/* Solutions overview */
.solutions { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.sol { position: relative; overflow: hidden; border-top: 5px solid var(--health); padding: 34px; }
.sol.eden { border-top-color: var(--eden); }
.sol-head { display: flex; gap: 16px; align-items: center; margin-bottom: 20px; }
.sol-head h3 { font-size: 1.6rem; color: var(--health); }
.sol.eden .sol-head h3 { color: var(--eden); }
.sol-head p { color: var(--muted); font-size: .95rem; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.checks li { display: flex; gap: 12px; align-items: flex-start; }
.checks li .icon { color: var(--health); font-size: 20px; margin-top: 3px; }
.sol.eden .checks li .icon { color: var(--eden); }
.sol .more { display: inline-flex; align-items: center; gap: 8px; margin-top: 24px; font-weight: 800; text-decoration: none; color: var(--health); }
.sol.eden .more { color: var(--eden); }
.sol .more:hover .icon { transform: translateX(3px); }
.sol .more .icon { transition: transform .2s; }
.pillars { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 30px; }

/* Product header band */
.product-band { padding: 110px 0 40px; }
.product-band.health { background: linear-gradient(180deg, var(--health-soft), var(--stone-50)); }
.product-band.eden { background: linear-gradient(180deg, var(--eden-soft), var(--white)); }
.product-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.tag { display: inline-flex; align-items: center; gap: 8px; font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--health); }
.eden .tag { color: var(--eden); }
.product-intro h2 { margin: 12px 0 16px; }
.product-intro .lead { font-size: 1.12rem; color: var(--muted); }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 30px 0; }
.stat { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; text-align: center; }
.stat b { display: block; font-family: var(--serif); font-size: 2.3rem; line-height: 1; color: var(--health); }
.stat span { display: block; margin-top: 8px; font-size: .85rem; color: var(--muted); }
.for h3 { font-family: var(--sans); font-size: .95rem; font-weight: 800; margin-bottom: 12px; }
.shot {
  border-radius: 18px; overflow: hidden; background: var(--white);
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  max-height: 560px;
}
.shot img { width: 100%; }
.shot-caption { text-align: center; font-size: .8rem; color: var(--muted); margin-top: 12px; }
.phone {
  width: min(320px, 100%); margin: 0 auto; padding: 12px; border-radius: 40px;
  background: var(--stone-900); box-shadow: var(--shadow-lg);
}
.phone img { border-radius: 30px; width: 100%; }

/* Modules grid */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.module h3 { font-family: var(--sans); font-size: 1.02rem; font-weight: 800; margin: 16px 0 6px; }
.module p { color: var(--muted); font-size: .92rem; }
.module.dark { background: var(--stone-800); color: var(--white); border-color: var(--stone-800); }
.module.dark p { color: rgba(255,255,255,.7); }
.module.dark .ico { background: var(--white); color: var(--stone-800); }
.note { display: flex; gap: 12px; align-items: center; margin-top: 26px; padding: 18px 22px; border-radius: var(--radius); background: var(--health-soft); color: var(--health); font-weight: 700; }
.note.eden { background: var(--eden-soft); color: var(--eden); }
.note .icon { font-size: 22px; }

/* Benefits */
.benefit { text-align: center; padding: 32px 28px; }
.benefit .ico { width: 64px; height: 64px; border-radius: 50%; font-size: 28px; }
.benefit h3 { margin: 16px 0 22px; font-size: 1.3rem; }
.benefit ul { list-style: none; margin: 0; padding: 0; text-align: left; display: grid; gap: 14px; }
.benefit li { display: flex; gap: 12px; align-items: flex-start; padding-top: 14px; border-top: 1px solid var(--line); }
.benefit li .icon { font-size: 20px; color: var(--stone-800); margin-top: 2px; }

/* Eden before/after */
.compare { display: grid; grid-template-columns: 1fr 1fr; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--white); box-shadow: var(--shadow); margin-top: 26px; }
.compare > div { padding: 14px 20px; border-top: 1px solid var(--line); font-size: .95rem; }
.compare .h { font-weight: 800; color: var(--white); background: var(--stone-500); border-top: 0; text-align: center; }
.compare .h.after { background: var(--eden); }
.compare .b { color: var(--muted); display: flex; gap: 10px; align-items: center; }
.compare .a { font-weight: 700; display: flex; gap: 10px; align-items: center; background: #f5fbfa; }
.compare .a .icon { color: var(--eden); }
.compare .b .icon { color: #b0b8c1; }

.feat-group { margin-top: 40px; }
.feat-group > h3 { font-family: var(--sans); font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 800; color: var(--eden); margin-bottom: 14px; }
.feat { display: flex; gap: 16px; align-items: flex-start; }
.feat h4 { margin: 0 0 4px; font-size: 1rem; }
.feat p { color: var(--muted); font-size: .92rem; }

/* Journey */
.journey { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; position: relative; margin-top: 10px; }
.journey::before { content: ""; position: absolute; top: 40px; left: 10%; right: 10%; border-top: 2px dashed #9ccfc6; }
.step { position: relative; text-align: center; padding: 0 6px; }
.step .ring { position: relative; width: 80px; height: 80px; margin: 0 auto 18px; border-radius: 50%; background: var(--white); border: 3px solid var(--eden); display: grid; place-items: center; color: var(--eden); font-size: 32px; }
.step .num { position: absolute; top: -4px; right: -4px; width: 26px; height: 26px; border-radius: 50%; background: var(--eden); color: var(--white); font-size: .8rem; font-weight: 800; display: grid; place-items: center; }
.step h3 { font-family: var(--sans); font-size: 1rem; font-weight: 800; }
.step em { display: block; color: var(--eden); font-size: .85rem; margin: 4px 0 8px; }
.step p { color: var(--muted); font-size: .9rem; }

/* Why */
.why .card { display: flex; flex-direction: column; gap: 14px; }
.why h3 { font-family: var(--sans); font-size: 1.08rem; font-weight: 800; }
.why p { color: var(--muted); }

/* Process */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.phase { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.phase-head { padding: 16px 22px; color: var(--white); font-weight: 800; display: flex; gap: 10px; align-items: baseline; }
.phase-head b { font-family: var(--serif); font-size: 1.4rem; opacity: .75; }
.phase:nth-child(1) .phase-head { background: #5c6b7c; }
.phase:nth-child(2) .phase-head { background: #3e6a9e; }
.phase:nth-child(3) .phase-head { background: var(--health); }
.phase:nth-child(4) .phase-head { background: var(--stone-800); }
.phase-body { padding: 22px; }
.phase-body ul { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 12px; }
.phase-body li { display: flex; gap: 10px; align-items: flex-start; font-size: .95rem; }
.phase-body li .icon { color: var(--health); margin-top: 4px; }
.pilot { margin-top: 24px; text-align: center; color: var(--muted); }

/* References */
.refs { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center; }
.ref-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.ref-stats .stat b { color: var(--stone-800); font-size: 2.8rem; }
.testimonial { background: var(--stone-800); color: var(--white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.testimonial img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.testimonial blockquote { margin: 0; padding: 28px; font-family: var(--serif); font-style: italic; font-size: 1.15rem; line-height: 1.5; }
.testimonial blockquote .icon { display: block; font-size: 30px; color: var(--accent); margin-bottom: 10px; }

/* Contact */
.contact { background: var(--stone-900); color: var(--white); position: relative; overflow: hidden; }
.contact::before { content: ""; position: absolute; width: 640px; height: 640px; left: -260px; bottom: -340px; border-radius: 50%; background: radial-gradient(circle at 60% 40%, #2a64b3, #1f4f8f 60%, transparent 61%); opacity: .55; }
.contact .wrap { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact .eyebrow { color: var(--accent); }
.contact h2 { margin: 12px 0 16px; }
.contact .lead { color: rgba(255,255,255,.75); font-size: 1.08rem; }
.coords { list-style: none; padding: 0; margin: 32px 0 0; display: grid; gap: 14px; }
.coords li { display: flex; gap: 14px; align-items: center; }
.coords .ico { background: var(--health); width: 42px; height: 42px; font-size: 19px; }
.coords a { text-decoration: none; }
.coords a:hover { text-decoration: underline; }
.coords small { display: block; color: rgba(255,255,255,.55); font-size: .78rem; }
.form { background: var(--stone-800); border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius-lg); padding: 30px; }
.form h3 { font-size: 1.4rem; margin-bottom: 6px; }
.form > p { color: rgba(255,255,255,.65); font-size: .95rem; margin-bottom: 22px; }
.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field label { font-size: .85rem; font-weight: 700; color: rgba(255,255,255,.85); }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: .98rem; color: var(--white);
  background: var(--stone-900); border: 1px solid rgba(255,255,255,.14); border-radius: 10px; padding: 12px 14px;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(116,137,255,.25); }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.btn-wa { background: #1f9d55; color: var(--white); }
.btn-wa:hover { background: #22b05f; }
.form-hint { margin-top: 12px; font-size: .8rem; color: rgba(255,255,255,.5); }

/* Footer */
.footer { background: #15191e; color: rgba(255,255,255,.6); padding: 36px 0; font-size: .88rem; }
.footer .wrap { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.footer .brand img { width: 34px; height: 34px; }
.footer .brand span { font-size: 1rem; }
.footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.footer nav a { text-decoration: none; }
.footer nav a:hover { color: var(--white); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .problem { grid-template-columns: 1fr 1fr; }
  .problem .result { grid-column: 1 / -1; grid-row: auto; }
  .journey { grid-template-columns: 1fr; gap: 22px; }
  .journey::before { top: 40px; bottom: 40px; left: 40px; right: auto; border-top: 0; border-left: 2px dashed #9ccfc6; }
  .step { display: grid; grid-template-columns: 80px 1fr; gap: 18px; text-align: left; align-items: center; }
  .step .ring { margin: 0; }
}
@media (max-width: 860px) {
  .nav { position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch; gap: 2px; padding: 12px 16px 20px; background: var(--stone-900); box-shadow: var(--shadow-lg); display: none; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 14px; }
  .nav .btn { margin: 8px 0 0; }
  .menu-btn { display: inline-flex; }
  .header.menu-open { background: var(--stone-900); }
  .hero { padding: 120px 0 80px; }
  .hero .wrap, .about, .solutions, .product-intro, .refs, .contact .wrap { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .hero-logo { width: 190px; padding: 18px; border-radius: 28px; }
  .grid-3 { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .product-band { padding: 80px 0 30px; }
  .shot { max-height: 420px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .grid-4, .process, .problem { grid-template-columns: 1fr; }
  .stats, .ref-stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat { padding: 14px 6px; }
  .stat b { font-size: 1.8rem; }
  .ref-stats .stat b { font-size: 2rem; }
  .row-2 { grid-template-columns: 1fr; }
  .compare > div { padding: 12px 12px; font-size: .88rem; }
  .sol { padding: 26px 22px; }
  .form { padding: 22px; }
  .brand span { font-size: 1rem; }
}