/* ============================================================
   sections.css — nav, concept, modes, how, multi, values,
   safeguards, preview, download, faq, footer
   ============================================================ */

/* ---------------- NAV ---------------- */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 50; transition: background .3s, border-color .3s, backdrop-filter .3s; border-bottom: 1px solid transparent; }
.nav--solid { background: oklch(0.13 0.022 8 / 0.72); backdrop-filter: blur(18px) saturate(1.3); border-color: var(--line); }
.nav__prog { position: absolute; left: 0; bottom: -1px; height: 2px; width: 100%; transform-origin: 0 50%; background: linear-gradient(90deg, var(--heat-0), var(--accent-bright), var(--heat-3)); }
.nav__inner { display: flex; align-items: center; gap: 28px; height: 70px; }
.nav__logo { font-family: var(--serif); font-style: italic; font-size: 24px; font-weight: 500; letter-spacing: -0.01em; }
.nav__logo b { font-style: normal; font-weight: 700; color: var(--accent-bright); }
.nav__links { display: flex; gap: 26px; margin-left: 14px; }
.nav__links a { font-size: 14.5px; color: var(--ink-soft); transition: color .2s; }
.nav__links a:hover { color: var(--ink); }
.nav__right { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.nav__age { font-family: var(--mono); font-size: 12px; font-weight: 600; color: var(--accent-bright); border: 1px solid oklch(0.685 0.185 var(--accent-h) / 0.4); border-radius: 999px; padding: 4px 10px; }
.nav__cta { padding: 11px 20px; font-size: 14.5px; }
.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 6px; }
.nav__burger span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }
.nav__mobile { display: none; }

@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__burger { display: flex; }
  .nav__mobile { display: grid; max-height: 0; overflow: hidden; transition: max-height .4s; background: oklch(0.13 0.022 8 / 0.96); backdrop-filter: blur(18px); }
  .nav__mobile.open { max-height: 380px; border-top: 1px solid var(--line); }
  .nav__mobile a { padding: 15px var(--gut); border-bottom: 1px solid var(--line-soft); color: var(--ink-soft); }
}

/* ---------------- CONCEPT — bento ---------------- */
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .lead { margin-inline: auto; }

.bento { display: grid; grid-template-columns: 1.5fr 1fr; grid-template-rows: auto auto; gap: 18px; margin-top: 52px; }
.bento__feat { grid-row: span 2; display: flex; flex-direction: column; justify-content: center; gap: 30px; min-height: 360px; }
.bento__feat--photo { position: relative; overflow: hidden; border-radius: var(--r-lg); border: 1px solid var(--line); box-shadow: var(--shadow-soft); padding: 0; justify-content: flex-end; min-height: 420px; }
.bento__feat-img { position: absolute; inset: 0; width: 100%; height: 100%; }
.bento__feat-scrim { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, oklch(0.13 0.02 8 / 0.15), oklch(0.13 0.02 8 / 0.55) 45%, oklch(0.11 0.02 8 / 0.92)); }
.bento__feat-inner { position: relative; z-index: 1; padding: clamp(24px, 3vw, 38px); display: flex; flex-direction: column; gap: 26px; }
.bento__feat--photo .bento__feat-txt .body { color: var(--ink-soft); }
.bento__players { display: flex; }
.bento__pp { width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 18px; color: oklch(0.16 0.02 10); margin-left: -12px; border: 2px solid var(--bg); background: linear-gradient(135deg, var(--accent-bright), var(--accent-deep)); }
.bento__pp:first-child { margin-left: 0; }
.bento__pp:nth-child(2) { background: linear-gradient(135deg, var(--heat-0), oklch(0.6 0.12 60)); }
.bento__pp:nth-child(3) { background: linear-gradient(135deg, oklch(0.72 0.16 350), oklch(0.5 0.14 350)); }
.bento__pp:nth-child(4) { background: linear-gradient(135deg, var(--heat-1), var(--heat-3)); }
.bento__pp--more { background: oklch(1 0 0 / 0.08) !important; color: var(--ink-soft); font-size: 15px; font-family: var(--mono); }
.bento__pp .avfig { width: 56%; height: 56%; fill: oklch(0.16 0.02 10 / 0.55); display: block; }
.bento__feat-txt .kicker-num { color: var(--accent-bright); }
.bento__feat-txt .h3 { margin-top: 12px; }
.bento__feat-txt .body { margin-top: 12px; }
.bento__glyph { font-size: 26px; color: var(--accent-bright); display: block; margin-bottom: 18px; }
.bento .card .h3 { margin-bottom: 12px; }

/* ---------------- MODES ---------------- */
.modes__duo { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 52px; }
.modecard { padding: clamp(26px, 3vw, 40px); border-radius: var(--r-lg); border: 1px solid var(--line); position: relative; overflow: hidden; }
.modecard--cool { background: linear-gradient(180deg, oklch(0.24 0.03 220 / 0.5), oklch(1 0 0 / 0.015)); }
.modecard--hot { background: linear-gradient(180deg, oklch(0.30 0.07 18 / 0.55), oklch(1 0 0 / 0.02)); border-color: oklch(0.66 0.21 14 / 0.3); }
.modecard__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; }
.modecard__e { font-size: 28px; }
.modecard .h3 { margin-bottom: 14px; }
.modecard__foot { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line-soft); font-size: 13.5px; color: var(--ink-faint); font-family: var(--mono); letter-spacing: 0.01em; }
.modecard__crescendo { display: flex; align-items: center; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.modecard__crescendo span { font-weight: 600; font-size: 14px; padding: 7px 14px; border-radius: 999px; background: oklch(1 0 0 / 0.05); border: 1px solid var(--line); }
.modecard__crescendo span:nth-child(1) { color: var(--heat-0); }
.modecard__crescendo span:nth-child(3) { color: var(--heat-1); }
.modecard__crescendo span:nth-child(5) { color: var(--heat-3); }
.modecard__crescendo i { color: var(--ink-faint); font-style: normal; }
.chip--hot { color: var(--accent-bright); border-color: oklch(0.66 0.21 14 / 0.35); background: var(--accent-tint); }

.modes__or { display: flex; align-items: center; gap: 20px; margin: 46px 0 32px; color: var(--ink-faint); font-family: var(--mono); font-size: 13px; letter-spacing: 0.06em; }
.modes__or::before, .modes__or::after { content: ""; height: 1px; flex: 1; background: var(--line); }

.modes__levels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.levelcard { padding: clamp(22px, 2.4vw, 32px); border-radius: var(--r-lg); border: 1px solid var(--line); background: linear-gradient(180deg, oklch(1 0 0 / 0.04), oklch(1 0 0 / 0.012)); position: relative; overflow: hidden; }
.levelcard::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; }
.levelcard--l1::before { background: linear-gradient(90deg, var(--heat-0), transparent); }
.levelcard--l2::before { background: linear-gradient(90deg, var(--heat-1), transparent); }
.levelcard--l3::before { background: linear-gradient(90deg, var(--heat-3), transparent); }
.levelcard__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.levelcard__p { font-size: 22px; }
.levelcard__bars { display: flex; gap: 4px; }
.levelcard__bars i { width: 18px; height: 6px; border-radius: 3px; background: oklch(1 0 0 / 0.12); }
.levelcard--l1 .levelcard__bars i.on { background: var(--heat-0); }
.levelcard--l2 .levelcard__bars i.on { background: var(--heat-1); }
.levelcard--l3 .levelcard__bars i.on { background: var(--heat-3); }
.levelcard .h3 { margin-bottom: 4px; }
.levelcard__d { font-size: 13px; color: var(--accent-bright); font-weight: 500; margin-bottom: 14px; }
.levelcard__cap { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line-soft); font-size: 12.5px; color: var(--ink-faint); font-family: var(--mono); }
.modes__note { margin-top: 36px; max-width: 80ch; color: var(--ink-faint); font-size: 14.5px; line-height: 1.6; }

/* ---------------- HOW ---------------- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 52px; counter-reset: s; }
.steps__item { position: relative; padding-top: 26px; border-top: 2px solid var(--line); }
.steps__item::before { content: ""; position: absolute; top: -2px; left: 0; width: 38px; height: 2px; background: var(--accent-bright); }
.steps__n { font-family: var(--mono); font-size: 28px; font-weight: 600; color: var(--accent-bright); display: block; }
.steps__t { font-family: var(--serif); font-size: 21px; font-weight: 500; margin: 14px 0 10px; line-height: 1.15; }

/* ---------------- MULTI ---------------- */
.multi { background: var(--bg-deep); }
.multi__grid { display: grid; grid-template-columns: 1fr 0.9fr; gap: clamp(36px, 6vw, 84px); align-items: center; }
.multi__list { margin-top: 36px; display: flex; flex-direction: column; gap: 8px; }
.multi__pt { display: grid; grid-template-columns: auto 1fr; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line-soft); }
.multi__pt:last-child { border-bottom: 1px solid var(--line-soft); }
.multi__pt-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent-bright); margin-top: 8px; box-shadow: 0 0 0 5px var(--accent-tint); }
.multi__pt-t { font-family: var(--serif); font-size: 19px; font-weight: 500; margin-bottom: 6px; }
.multi__note { margin-top: 28px; font-size: 13.5px; color: var(--ink-faint); font-family: var(--mono); line-height: 1.6; max-width: 52ch; }
.multi__phones { position: relative; min-height: 520px; display: flex; align-items: center; justify-content: center; }
.multi__phone--back { position: absolute; transform: translate(34%, -8%) rotate(7deg); opacity: 0.85; filter: drop-shadow(0 40px 60px oklch(0 0 0 / 0.5)); }
.multi__phone--front { position: relative; transform: translate(-18%, 6%) rotate(-4deg); filter: drop-shadow(0 50px 70px oklch(0 0 0 / 0.6)); z-index: 1; }

/* ---------------- VALUES ---------------- */
.valeurs__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(24px, 4vw, 56px); margin-top: 56px; }
.valeur { text-align: center; }
.valeur__g { display: inline-grid; place-items: center; width: 64px; height: 64px; border-radius: 50%; font-size: 26px; color: var(--accent-bright); background: var(--accent-tint); border: 1px solid oklch(0.685 0.185 var(--accent-h) / 0.3); margin-bottom: 22px; }
.valeur .h3 { margin-bottom: 12px; }
.valeur .body { max-width: 38ch; margin-inline: auto; }
.valeurs__banner { position: relative; margin-top: clamp(40px, 6vw, 72px); border-radius: var(--r-xl); overflow: hidden; min-height: 300px; display: grid; place-items: center; border: 1px solid var(--line); }
.valeurs__banner-img { position: absolute; inset: 0; width: 100%; height: 100%; }
.valeurs__banner-scrim { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, oklch(0.13 0.02 8 / 0.35), oklch(0.13 0.02 8 / 0.62)); }
.valeurs__banner-q { position: relative; z-index: 1; font-family: var(--serif); font-style: italic; font-size: clamp(24px, 3.4vw, 40px); line-height: 1.2; text-align: center; max-width: 18ch; padding: 40px; text-wrap: balance; text-shadow: 0 2px 20px oklch(0 0 0 / 0.6); }
.valeurs__banner-q em { color: var(--accent-bright); font-style: italic; }

/* ---------------- SAFEGUARDS ---------------- */
.gardefous__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 48px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--r-md); overflow: hidden; }
.gardefou { display: grid; grid-template-columns: auto 1fr; gap: 16px; padding: clamp(24px, 2.6vw, 34px); background: var(--bg); transition: background .3s; }
.gardefou:hover { background: var(--bg-raise); }
.gardefou__n { font-family: var(--mono); font-size: 14px; color: var(--accent-bright); }
.gardefou__t { font-family: var(--serif); font-size: 19px; font-weight: 500; margin-bottom: 8px; }

/* ---------------- APP PREVIEW ---------------- */
.apercu { background: var(--bg-deep); overflow: hidden; }
.apercu__stage { position: relative; display: flex; align-items: center; justify-content: center; min-height: 580px; margin-top: 48px; }
.apercu__p { position: absolute; filter: drop-shadow(0 40px 60px oklch(0 0 0 / 0.55)); }
.apercu__p--1 { transform: translateX(-72%) rotate(-8deg) scale(0.92); opacity: 0.8; z-index: 1; }
.apercu__p--2 { transform: translateY(-2%); z-index: 3; }
.apercu__p--3 { transform: translateX(72%) rotate(8deg) scale(0.92); opacity: 0.8; z-index: 1; }
.apercu__caps { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px 28px; margin-top: 24px; }
.apercu__cap { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.apercu__cap b { font-size: 15px; font-weight: 600; }
.apercu__cap span { font-size: 12.5px; color: var(--ink-faint); font-family: var(--mono); }

/* ---------------- DOWNLOAD ---------------- */
.download { position: relative; text-align: center; overflow: hidden; }
.download__photo { position: absolute; inset: 0; z-index: 0; }
.download__photo-slot { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.55; }
.download__photo-scrim { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(75% 90% at 42% 50%, oklch(0.13 0.02 8 / 0.42), oklch(0.13 0.02 8 / 0.86)); }
.download__glow { position: absolute; inset: 0; pointer-events: none; z-index: 1; background: radial-gradient(50% 70% at 50% 100%, oklch(0.6 0.22 22 / 0.45), transparent 65%), radial-gradient(40% 50% at 50% 0%, var(--accent-tint), transparent 60%); }
.download__inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; max-width: 820px; margin-inline: auto; }
.download__inner .eyebrow { justify-content: center; }
.download__title { margin: 24px 0 0; }
.download__lead { margin: 24px auto 34px; }
.download__inner .hero__stores { justify-content: center; }
.download__meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 32px; }

/* ---------------- FAQ ---------------- */
.faq__list { margin-top: 44px; max-width: 860px; }
.faq__item { border-top: 1px solid var(--line); }
.faq__item:last-child { border-bottom: 1px solid var(--line); }
.faq__q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; background: none; border: 0; padding: 24px 4px; text-align: left; color: var(--ink); font-family: var(--serif); font-size: clamp(18px, 2vw, 22px); font-weight: 500; transition: color .2s; }
.faq__q:hover { color: var(--accent-bright); }
.faq__plus { position: relative; width: 18px; height: 18px; flex: none; }
.faq__plus::before, .faq__plus::after { content: ""; position: absolute; inset: 0; margin: auto; background: var(--accent-bright); transition: transform .3s, opacity .3s; }
.faq__plus::before { width: 100%; height: 2px; }
.faq__plus::after { width: 2px; height: 100%; }
.faq__item.open .faq__plus::after { transform: rotate(90deg); opacity: 0; }
.faq__a { display: grid; transition: grid-template-rows .35s cubic-bezier(.2,.7,.2,1); }
.faq__a-in { overflow: hidden; }
.faq__a .body { padding: 0 60px 26px 4px; max-width: 70ch; }

/* ---------------- FOOTER ---------------- */
.footer { border-top: 1px solid var(--line); padding-top: clamp(48px, 7vw, 84px); background: var(--bg-deep); }
.footer__inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: clamp(36px, 6vw, 80px); }
.footer__logo { font-size: 28px; }
.footer__tag { margin: 18px 0 24px; max-width: 44ch; }
.footer__badges { display: flex; flex-wrap: wrap; gap: 9px; }
.footer__cols { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.footer__col h4 { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 16px; font-weight: 500; }
.footer__col { display: flex; flex-direction: column; gap: 11px; }
.footer__col a { font-size: 14.5px; color: var(--ink-soft); transition: color .2s; }
.footer__col a:hover { color: var(--accent-bright); }
.footer__bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: clamp(40px, 6vw, 72px); padding: 26px 0; border-top: 1px solid var(--line-soft); font-size: 12.5px; color: var(--ink-faint); font-family: var(--mono); }
.footer__bottom b { color: var(--ink-soft); }

/* ---------------- responsive ---------------- */
@media (max-width: 960px) {
  .bento { grid-template-columns: 1fr; }
  .bento__feat { grid-row: auto; min-height: 0; }
  .modes__duo { grid-template-columns: 1fr; }
  .modes__levels { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .multi__grid { grid-template-columns: 1fr; }
  .multi__phones { min-height: 480px; margin-top: 20px; }
  .valeurs__grid { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .gardefous__grid { grid-template-columns: 1fr 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .steps { grid-template-columns: 1fr; }
  .gardefous__grid { grid-template-columns: 1fr; }
  .apercu__stage { min-height: 0; flex-direction: column; gap: 28px; }
  .apercu__p { position: relative; transform: none !important; opacity: 1 !important; }
  .apercu__p--1, .apercu__p--3 { display: none; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
  .faq__a .body { padding-right: 20px; }
}