/* Présentation publique, palette et mouvements de la famille Cercle. */
:root {
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --reading-progress: 0;
}

[hidden] { display: none !important; }
html { scroll-padding-top: 120px; }
body { overflow-wrap: break-word; }
.skip-link { position: fixed; z-index: 40; }
button:focus-visible, summary:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 6px;
}
.reading-progress {
  position: fixed;
  inset: 0 0 auto;
  height: 2px;
  background: var(--ink);
  transform: scaleX(var(--reading-progress));
  transform-origin: left;
  z-index: 30;
  pointer-events: none;
}
.header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 98px;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(230, 230, 235, .7);
}
.header nav { gap: 28px; }
.header nav a { min-height: 44px; display: inline-flex; align-items: center; }
.nav-login { gap: 26px; padding: 11px 22px; }
.button, .nav-login, .text-link, .entry-support a {
  transition: background .25s, border-color .25s, box-shadow .35s, transform .35s var(--ease-out);
}
.button > span, .nav-login > span, .text-link > span {
  display: inline-block;
  transition: transform .35s var(--ease-out);
}
.text-link { min-height: 44px; }
.landing .hero { min-height: 750px; border-top: 0; }
.landing .hero-editorial { padding-top: 70px; padding-bottom: 48px; }
.landing h1 { font-size: clamp(38px, 4.35vw, 64px); letter-spacing: -.055em; }
.landing h1 > span {
  display: inline-block;
  font-family: var(--serif);
  font-size: 1.39em;
  font-weight: 400;
  line-height: .94;
  letter-spacing: -.035em;
  color: var(--ink-2);
  margin-top: 11px;
}
.landing .hero-lead { margin-top: 32px; }
.landing .hero-copy { max-width: 335px; }
.landing .house-signature { padding-top: 44px; }
.landing .entry-panel {
  background: linear-gradient(155deg, #f8f8f6 0%, #f0f0ee 100%);
  border-left: 1px solid var(--line);
  gap: 24px;
  padding: 28px 38px 24px;
  overflow: hidden;
}
.status-label { display: inline-flex; align-items: center; gap: 7px; }
.status-label::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: currentColor; }
.landing .entry-card {
  position: relative;
  background: rgba(255, 255, 255, .88);
  border: 1px solid #fff;
  border-radius: 20px;
  padding: 28px 30px 24px;
  max-width: 390px;
  box-shadow: 0 18px 48px -36px #10101366, inset 0 1px 0 #fff;
}
.landing .entry-card h2 { font-size: 47px; }
.landing .entry-card > p:not(.eyebrow):not(.entry-note) { margin-top: 16px; font-size: 12px; }
.landing .entry-card .button { margin-top: 22px; }
.landing .entry-support { margin-top: 20px; padding-top: 17px; }
.landing .entry-support a { min-height: 32px; display: inline-flex; align-items: center; }
.connection-visual { position: relative; height: 202px; min-height: 202px; width: 100%; max-width: 440px; margin: 0 auto; }
.connection-orbit { position: absolute; border: 1px solid #dededb; border-radius: 50%; top: 46%; left: 50%; transform: translate(-50%, -50%); }
.orbit-outer { width: 252px; height: 180px; opacity: .45; }
.orbit-inner { width: 176px; height: 126px; opacity: .55; }
.connection-line { position: absolute; height: 1px; left: 38px; right: 38px; top: 91px; background: #cececc; transform-origin: left; animation: connect-line 1.1s .25s var(--ease-out) both; }
.connection-node { position: absolute; top: 65px; width: 48px; height: 54px; display: grid; place-items: center; background: #f5f5f3; color: #555559; }
.node-company { left: 6px; }
.node-firm { right: 6px; }
.connection-node svg { width: 28px; height: 28px; }
.connection-node span { position: absolute; top: 62px; font-size: 9px; white-space: nowrap; letter-spacing: .01em; }
.connection-core { position: absolute; left: calc(50% - 36px); top: 55px; width: 72px; height: 72px; display: grid; place-items: center; border: 1px solid #e5e5e2; border-radius: 20px; background: #fff; box-shadow: 0 9px 22px -14px #10101355; z-index: 3; animation: core-arrive 1.2s .2s var(--ease-out) both; }
.connection-caption { position: absolute; left: 0; right: 0; bottom: 3px; text-align: center; color: var(--gray); font-size: 9px; }
.document-sheet { position: absolute; width: 36px; height: 48px; top: 68px; left: calc(50% - 18px); padding: 10px 7px; border: 1px solid #d7d7d4; border-radius: 4px; background: #fff; box-shadow: 0 4px 10px -5px #10101322; z-index: 2; }
.document-sheet i { height: 2px; background: #d8d8d5; margin: 5px 0; display: block; }
.document-sheet i:last-child { width: 60%; }
.sheet-back { transform: translate(-78px, 0) rotate(-8deg); animation: sheet-transfer-left 4s .1s var(--ease-out) both; }
.sheet-front { transform: translate(78px, 0) rotate(8deg); animation: sheet-transfer-right 4s .2s var(--ease-out) both; }
.hero-enter { animation: enter-soft .85s var(--ease-out) both; }
.hero-delay-1 { animation-delay: .08s; }
.hero-delay-2 { animation-delay: .16s; }
.hero-delay-3 { animation-delay: .24s; }

.landing .platform { padding-top: 106px; padding-bottom: 92px; }
.section-heading h2 { text-wrap: balance; }
.features { margin-top: 52px; }
.features article { transition: background .3s; }
.feature-icon { transition: transform .4s var(--ease-out); }
.feature-number { font-family: var(--serif); font-size: 17px; top: 33px; color: #97979b; }
.features h3 { font-size: 24px; }
.feature-label { color: #65656a; }
.perspectives { padding-top: 8px; padding-bottom: 100px; }
.perspectives .section-heading { max-width: 730px; }
.perspective-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 44px; }
.perspective { min-width: 0; border: 1px solid var(--line); border-radius: 20px; padding: 34px 38px; }
.perspective-firm { background: var(--surface); border-color: transparent; }
.perspective-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.perspective-top svg { width: 24px; height: 24px; color: #66666b; }
.perspective h3 { font-family: var(--serif); font-size: 44px; font-weight: 400; letter-spacing: -.02em; line-height: 1.02; margin: 36px 0 21px; }
.perspective > p { max-width: 375px; font-size: 13px; line-height: 1.85; color: var(--gray); }
.role-list { list-style: none; margin: 30px 0 0; padding: 0; font-size: 12px; color: var(--ink-2); }
.role-list li { padding: 12px 0 12px 22px; border-top: 1px solid var(--line); position: relative; }
.role-list li::before { content: ''; width: 5px; height: 5px; border: 1px solid #98989b; border-radius: 50%; position: absolute; top: 19px; left: 2px; }
.relationship { position: relative; padding-top: 80px; padding-bottom: 80px; }
.relationship h2 { font-size: clamp(42px, 4.5vw, 64px); }
.relationship-signature { margin-top: 35px; font-size: 14px; letter-spacing: -.02em; }
.relationship-signature > span { display: block; color: var(--gray); font-size: 10px; margin-top: 4px; letter-spacing: .02em; }
.relationship-copy { padding-top: 10px; }
.questions { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; padding-top: 100px; padding-bottom: 110px; }
.questions .section-heading h2 { font-family: var(--serif); font-weight: 400; font-size: 50px; letter-spacing: -.025em; }
.question-list { border-top: 1px solid var(--line); }
.question-list details { border-bottom: 1px solid var(--line); }
.question-list summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; list-style: none; cursor: pointer; min-height: 83px; font-size: 14px; font-weight: 500; line-height: 1.5; padding: 23px 0; }
.question-list summary::-webkit-details-marker { display: none; }
.question-plus { flex: 0 0 18px; height: 18px; position: relative; }
.question-plus::before, .question-plus::after { content: ''; width: 12px; height: 1px; background: currentColor; position: absolute; top: 8px; left: 3px; transition: transform .3s var(--ease-out); }
.question-plus::after { transform: rotate(90deg); }
details[open] .question-plus::after { transform: rotate(0); }
.answer { padding: 0 38px 26px 0; font-size: 13px; line-height: 1.85; color: var(--gray); }
.answer a { text-decoration: underline; text-underline-offset: 4px; color: var(--ink-2); }
details[open] .answer { animation: enter-soft .4s var(--ease-out); }
.closing { background: var(--ink); color: #fff; padding-top: 70px; padding-bottom: 74px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 60px; align-items: center; }
.closing .eyebrow { color: #b6b6bd; }
.closing h2 { font-family: var(--serif); font-size: clamp(40px, 4.7vw, 66px); font-weight: 400; line-height: 1.06; letter-spacing: -.025em; margin-top: 22px; }
.closing h2 span { color: #b6b6bd; }
.closing-actions { width: 100%; max-width: 340px; justify-self: end; }
.button-light { background: #fff; color: var(--ink); width: 100%; }
.closing .button:focus-visible { outline-color: #fff; }
.closing-contact { display: inline-block; font-size: 11px; color: #c0c0c6; margin-top: 16px; min-height: 32px; line-height: 1.7; }
.closing-contact:hover { text-decoration: underline; text-underline-offset: 4px; }
.motion-toggle { color: inherit; cursor: pointer; background: none; border: 0; padding: 0; font: inherit; text-align: left; }
.motion-toggle:hover { text-decoration: underline; text-underline-offset: 4px; }
.motion-toggle:disabled { cursor: default; text-decoration: none; }
.footer-bottom nav { align-items: center; gap: 20px; }
.footer-bottom nav > a, .motion-toggle { min-height: 36px; display: inline-flex; align-items: center; }

/* Le contenu reste visible lorsque JavaScript ou les observers sont indisponibles. */
[data-reveal] { opacity: 1; transform: none; }
html.motion-ready:not(.motion-paused) [data-reveal] { transition: opacity .75s var(--ease-out), transform .75s var(--ease-out); }
html.motion-ready:not(.motion-paused) [data-reveal]:not(.is-visible) { opacity: 0; transform: translateY(16px); }
html.motion-ready:not(.motion-paused) .features article:nth-child(2) { transition-delay: .07s; }
html.motion-ready:not(.motion-paused) .features article:nth-child(3) { transition-delay: .14s; }
html.motion-ready:not(.motion-paused) .perspective:nth-child(2) { transition-delay: .08s; }

@keyframes enter-soft { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes connect-line { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes core-arrive { from { opacity: 0; transform: scale(.92); } to { opacity: 1; transform: scale(1); } }
@keyframes sheet-transfer-left { 0% { opacity: 0; transform: translate(-105px, 12px) rotate(-14deg); } 25%, 100% { opacity: 1; transform: translate(-78px, 0) rotate(-8deg); } 65% { opacity: .45; transform: translate(-38px, -4px) rotate(-3deg); } }
@keyframes sheet-transfer-right { 0% { opacity: 0; transform: translate(28px, 7px) rotate(0); } 45% { opacity: .4; transform: translate(38px, -4px) rotate(3deg); } 75%, 100% { opacity: 1; transform: translate(78px, 0) rotate(8deg); } }

@media (hover: hover) and (pointer: fine) {
  .button:hover, .nav-login:hover { transform: translateY(-1px); box-shadow: 0 9px 20px -15px #10101388; }
  .button:hover > span, .nav-login:hover > span { transform: translate(3px, -3px); }
  .text-link:hover > span { transform: translateY(3px); }
  .features article:hover .feature-icon { transform: translateY(-4px); }
  .question-list summary:hover { color: #64646b; }
}
@media (max-width: 1100px) {
  .header nav { gap: 18px; }
  .landing .hero-editorial { padding-top: 58px; padding-right: 24px; }
  .landing h1 { font-size: 39px; }
  .landing .entry-panel { padding-left: 24px; padding-right: 24px; }
  .landing .entry-card { padding: 24px; }
  .landing .entry-card h2 { font-size: 43px; }
  .perspective { padding: 29px; }
  .questions { gap: 42px; }
  .questions .section-heading h2 { font-size: 43px; }
  .footer-bottom { flex-wrap: wrap; }
}
@media (max-width: 720px) {
  html { scroll-padding-top: 100px; }
  .header { min-height: 85px; padding-top: 19px; padding-bottom: 19px; }
  .header nav { gap: 0; }
  .header nav .nav-about { display: none; }
  .nav-login { padding: 9px 13px; gap: 12px; }
  .landing .hero { min-height: 0; }
  .landing .hero-editorial { padding: 45px var(--gutter) 38px; }
  .landing h1 { font-size: clamp(34px, 8.4vw, 54px); }
  .landing h1 > span { font-size: 1.32em; margin-top: 9px; }
  .landing .hero-lead { margin-top: 25px; }
  .landing .hero-copy { max-width: 390px; }
  .landing .house-signature { padding-top: 32px; gap: 12px; }
  .landing .entry-panel { border-left: 0; border-top: 1px solid var(--line); padding: 22px var(--gutter); gap: 18px; }
  .connection-visual { height: 183px; min-height: 183px; max-width: 380px; }
  .connection-node { top: 55px; }
  .connection-line { top: 81px; }
  .connection-core { top: 45px; }
  .document-sheet { top: 58px; }
  .connection-orbit { top: 44%; }
  .orbit-outer { width: 224px; height: 152px; }
  .orbit-inner { width: 160px; height: 106px; }
  .landing .entry-card { max-width: 420px; padding: 26px; }
  .landing .entry-card h2 { font-size: 43px; }
  .landing .entry-card > p:not(.eyebrow):not(.entry-note) { font-size: 13px; }
  .landing .platform { padding-top: 62px; padding-bottom: 59px; }
  .features h3 { font-size: 24px; }
  .feature-number { top: 26px; }
  .perspectives { padding-top: 0; padding-bottom: 60px; }
  .perspective-grid { grid-template-columns: 1fr; gap: 16px; margin-top: 31px; }
  .perspective { padding: 27px; border-radius: 16px; }
  .perspective h3 { font-size: 41px; margin-top: 27px; }
  .role-list { margin-top: 23px; }
  .relationship { padding-top: 51px; padding-bottom: 50px; }
  .relationship h2 { font-size: 45px; }
  .relationship-copy { padding-top: 0; }
  .relationship-signature { margin-top: 25px; }
  .questions { grid-template-columns: 1fr; gap: 30px; padding-top: 60px; padding-bottom: 62px; }
  .questions .section-heading h2 { font-size: 41px; }
  .question-list summary { min-height: 76px; font-size: 13px; gap: 18px; }
  .answer { padding-right: 20px; }
  .closing { grid-template-columns: 1fr; padding-top: 48px; padding-bottom: 43px; gap: 32px; }
  .closing h2 { font-size: 46px; }
  .closing-actions { justify-self: start; max-width: 390px; }
  .footer-bottom nav { column-gap: 20px; row-gap: 8px; }
  .motion-toggle { flex-basis: 100%; }
}
@media (max-width: 360px) {
  .header { padding-left: 18px; padding-right: 18px; }
  .brand > span { font-size: 28px; }
  .brand { gap: 7px; }
  .brand svg { width: 25px; height: 25px; }
  .nav-login { gap: 8px; padding-left: 11px; padding-right: 11px; }
  .landing .entry-card { padding: 22px; }
  .connection-node span { font-size: 8px; }
}
html.motion-paused { scroll-behavior: auto; }
html.motion-paused *, html.motion-paused *::before, html.motion-paused *::after { animation: none !important; transition: none !important; }
html.motion-paused [data-reveal] { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html.motion-ready [data-reveal]:not(.is-visible) { opacity: 1 !important; transform: none !important; }
}
@media print {
  .header { position: static; }
  .reading-progress, .motion-toggle, .connection-visual { display: none !important; }
  html.motion-ready [data-reveal]:not(.is-visible) { opacity: 1 !important; transform: none !important; }
  .hero-enter { animation: none; }
  .closing { background: #fff; color: #101013; }
}