:root {
  --c1: #1446E0;        /* jour 1, cobalt */
  --c2: #0B2196;        /* jour 2, bleu profond */
  --c3: #6A9DFF;        /* jour 3, bleu clair */
  --paper: #F2F5FB;
  --ice: #E8EEF9;
  --ink: #2E2F33;
  --grey: #6F7384;
  --line: #DDE3EA;
  --yellow: #F2C14E;
  --max: 1120px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: "Inter", system-ui, sans-serif; color: var(--ink); background: #fff; font-size: 17px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
h1, h2, h3, .btn, .amount, .scene-cap, .fig strong, .eyebrow { font-family: "Poppins", sans-serif; }
img { display: block; max-width: 100%; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--c3); outline-offset: 3px; }

.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--c1); }
.lede { font-size: 20px; color: var(--grey); max-width: 640px; }
.head { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.head h2 { margin-top: 10px; font-size: clamp(34px, 5vw, 56px); font-weight: 600; letter-spacing: -.03em; line-height: 1.05; }
.head .lede { margin-top: 14px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; padding: 14px 26px; font-size: 16px; font-weight: 500; text-decoration: none; border: 0; cursor: pointer; transition: transform .2s, background .2s; }
.btn-solid { background: var(--c1); color: #fff; }
.btn-solid:hover { background: var(--c2); }
.btn-ghost { background: transparent; color: var(--c1); box-shadow: inset 0 0 0 1.5px var(--c1); }
.btn-small { padding: 9px 18px; font-size: 14px; }
.link { color: var(--c1); text-decoration: none; font-weight: 500; }
.link:hover { text-decoration: underline; }

/* nav */
.nav { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 28px; padding: 12px max(24px, calc((100vw - var(--max)) / 2));
  background: rgba(242, 245, 251, .78); backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px); border-bottom: 1px solid rgba(0,0,0,.05); }
.nav-links { display: flex; gap: 24px; margin-left: auto; font-size: 14px; }
.nav-links a { text-decoration: none; color: var(--ink); opacity: .8; }
.nav-links a:hover { opacity: 1; }

/* hero */
.hero { background: var(--paper); text-align: center; padding: 120px 24px 40px; }
.hero h1 { margin-top: 18px; font-size: clamp(46px, 8vw, 104px); font-weight: 600; line-height: 1; letter-spacing: -.04em; color: #3A3B40; }
.hero h1 span { color: var(--c1); }
.hero .lede { margin: 22px auto 0; }
.cta { margin-top: 34px; display: flex; gap: 28px; justify-content: center; align-items: center; flex-wrap: wrap; }

/* opening scene: the arch, pinned */
.scene { background: var(--paper); height: 240vh; position: relative; }
.scene-pin { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; align-items: center; overflow: hidden; }
.scene-head { text-align: center; padding: 64px 24px 0; position: relative; z-index: 2; }
.scene-head h1 { margin-top: 14px; font-size: clamp(40px, 5.6vw, 76px); font-weight: 600; line-height: 1.02; letter-spacing: -.04em; color: #3A3B40; }
.scene-head h1 .w { display: inline-block; }
.scene-head h1 .accent { color: var(--c1); }
.scene-head .lede { margin: 14px auto 0; font-size: 18px; }
.scene-head .cta { margin-top: 22px; }
.scene-cap { position: absolute; bottom: 5vh; left: 0; right: 0; text-align: center; font-size: clamp(26px, 3.6vw, 44px); font-weight: 500; letter-spacing: -.02em; color: var(--grey); }
.scene-cap b { color: var(--ink); font-weight: 600; }
#cap2 { opacity: 0; }
.stage { position: relative; width: min(36vw, 440px, 44vh); aspect-ratio: 820 / 680; margin-top: 7vh; transform-style: preserve-3d; }
.tilt { position: absolute; inset: 0; transform: perspective(900px) rotateX(30deg); transform-origin: 50% 70%; }
.tilt::after { content: ""; position: absolute; left: 4%; right: 4%; bottom: -12%; height: 24%; border-radius: 50%; background: radial-gradient(closest-side, rgba(10,30,45,.18), rgba(10,30,45,0)); z-index: -1; }
.seg { position: absolute; inset: 0; width: 100%; height: 100%; filter: drop-shadow(0 10px 9px rgba(10,30,45,.28)) drop-shadow(0 2px 2px rgba(10,30,45,.22)); will-change: transform; }
.teeth span { position: absolute; transform: translate(-50%, -50%); font: 600 12px "Inter", sans-serif; will-change: transform, opacity; }
.docs { position: absolute; inset: 0; pointer-events: none; }
.doc { position: absolute; width: 210px; }
.doc[data-day="1"] { right: calc(116% + 36px); top: 46%; text-align: right; }
.doc[data-day="2"] { left: 50%; bottom: calc(112% + 10px); transform: translateX(-50%); text-align: center; }
.doc[data-day="3"] { left: calc(116% + 36px); top: 46%; }
.ring { display: inline-block; width: 92px; height: 92px; border-radius: 50%; border: 5px solid; padding: 4px; background: #fff; margin-bottom: 10px; }
.ring img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; filter: grayscale(1) contrast(1.05); }
.doc .d-day { font: 600 12px "Poppins", sans-serif; letter-spacing: .12em; text-transform: uppercase; }
.doc .d-name { font: 600 17px "Poppins", sans-serif; margin-top: 2px; }
.doc .d-title { font-size: 14px; color: var(--grey); line-height: 1.35; }

/* figures */
.figures { max-width: var(--max); margin: 0 auto; padding: 90px 24px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; text-align: center; }
.fig strong { display: block; font-size: clamp(44px, 5.4vw, 72px); font-weight: 600; letter-spacing: -.04em; line-height: 1; color: var(--c1); }
.fig span { display: block; margin-top: 8px; color: var(--grey); font-size: 15px; }

/* film */
.film { background: #fff; padding: 110px 24px; text-align: center; }
.film h2 { margin-top: 10px; font-size: clamp(32px, 4.4vw, 54px); font-weight: 600; letter-spacing: -.03em; line-height: 1.08; }
.film-frame { position: relative; margin: 44px auto 0; width: min(100%, 1040px); aspect-ratio: 16 / 9; border-radius: 28px; overflow: hidden;
  background: radial-gradient(110% 90% at 50% 10%, #1B2F8F 0%, #0B1A66 45%, #050C33 100%); box-shadow: 0 40px 80px rgba(10,30,80,.22); }
.film-frame video { position: absolute; inset: 0; width: 100%; height: 100%; background: #000; }
.film-poster { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: flex-start; padding-top: 17%; gap: 18px; }
.film-poster img { position: absolute; left: 50%; bottom: -30%; width: 62%; transform: translateX(-50%) perspective(900px) rotateX(38deg); filter: drop-shadow(0 30px 30px rgba(0,0,0,.5)); opacity: .9; }
.film-play { position: relative; width: 92px; height: 92px; border-radius: 50%; background: rgba(255,255,255,.16); backdrop-filter: blur(10px); box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.5); }
.film-play::after { content: ""; position: absolute; left: 38px; top: 30px; border-left: 24px solid #fff; border-top: 16px solid transparent; border-bottom: 16px solid transparent; }
.film-state { position: relative; color: rgba(255,255,255,.8); font: 500 15px "Poppins", sans-serif; letter-spacing: .08em; text-transform: uppercase; }
.film-frame.ready .film-poster { cursor: pointer; }

/* programme */
.program { padding: 110px 0 60px; }
#days { max-width: var(--max); margin: 50px auto 0; padding: 0 24px; display: grid; gap: 36px; }
.day { border-radius: 28px; overflow: hidden; background: #fff; box-shadow: 0 1px 0 var(--line), 0 20px 50px rgba(10,30,60,.07); }
.day-band { background: var(--c); color: var(--txt); padding: 36px 40px; display: grid; grid-template-columns: 1fr 220px; gap: 24px; align-items: center; }
.day-band .d-k { font: 600 13px "Poppins", sans-serif; letter-spacing: .14em; text-transform: uppercase; opacity: .9; }
.day-band h3 { margin-top: 8px; font-size: clamp(28px, 3.4vw, 40px); font-weight: 600; letter-spacing: -.025em; line-height: 1.08; }
.day-band .d-sub { margin-top: 6px; opacity: .85; }
.day-band .who { display: flex; align-items: center; gap: 12px; margin-top: 18px; }
.day-band .who img { width: 54px; height: 54px; border-radius: 50%; object-fit: cover; border: 3px solid var(--txt); filter: grayscale(1) contrast(1.05); }
.day-band .who b { display: block; font-family: "Poppins", sans-serif; }
.day-band .who span { font-size: 14px; opacity: .85; }
.day-band .mini { transform: perspective(500px) rotateX(30deg); filter: drop-shadow(0 8px 8px rgba(0,0,0,.28)); }
.mods { padding: 10px 40px 26px; }
.mod { border-bottom: 1px solid var(--line); }
.mod summary { list-style: none; display: grid; grid-template-columns: 54px 1fr 140px 24px; gap: 14px; align-items: start; padding: 20px 0; cursor: pointer; }
.mod summary::-webkit-details-marker { display: none; }
.chip { width: 40px; height: 40px; border-radius: 50%; border: 4px solid var(--c); display: grid; place-items: center; font: 600 13px "Poppins", sans-serif; color: var(--acc); }
.mod h4 { font: 600 18px "Poppins", sans-serif; letter-spacing: -.01em; line-height: 1.3; }
.mod .desc { margin-top: 4px; color: var(--grey); font-size: 15.5px; }
.mod .t { text-align: right; font-weight: 600; color: var(--acc); font-size: 15px; font-variant-numeric: tabular-nums; }
.mod .t span { display: block; font-weight: 400; color: var(--grey); }
.mod .plus { width: 24px; height: 24px; margin-top: 6px; border-radius: 50%; position: relative; }
.mod .plus::before, .mod .plus::after { content: ""; position: absolute; left: 5px; right: 5px; top: 11px; height: 2px; background: var(--acc); transition: transform .25s; }
.mod .plus::after { transform: rotate(90deg); }
.mod[open] .plus::after { transform: rotate(0); }
.mod ul { margin: -6px 0 22px 68px; padding: 0; list-style: none; color: var(--ink); font-size: 15px; }
.mod li { padding-left: 18px; position: relative; margin: 6px 0; }
.mod li::before { content: ""; position: absolute; left: 0; top: .62em; width: 8px; height: 2px; background: var(--c); }
.lunch { display: flex; align-items: center; gap: 10px; padding: 14px 0 14px 68px; border-bottom: 1px solid var(--line); font: 600 12px "Poppins", sans-serif; letter-spacing: .14em; text-transform: uppercase; color: var(--acc); }
.lunch i { width: 12px; height: 12px; border-radius: 50%; border: 3px solid var(--yellow); }

/* experts */
.experts { background: var(--paper); padding: 110px 0; }
.expert-grid { max-width: var(--max); margin: 50px auto 0; padding: 0 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.expert { background: #fff; border-radius: 26px; overflow: hidden; }
.expert img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; filter: grayscale(1) contrast(1.05); }
.expert div { padding: 22px 24px 26px; border-top: 6px solid var(--c); }
.expert .d-day { font: 600 12px "Poppins", sans-serif; letter-spacing: .12em; text-transform: uppercase; color: var(--acc); }
.expert h3 { margin-top: 4px; font-size: 22px; font-weight: 600; letter-spacing: -.01em; }
.expert p { color: var(--grey); font-size: 15px; }

/* price */
.price { max-width: var(--max); margin: 0 auto; padding: 110px 24px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; }
.price-card { background: var(--c1); color: #fff; border-radius: 30px; padding: 48px; }
.price-card .eyebrow { color: rgba(255,255,255,.75); }
.amount { margin-top: 10px; font-size: clamp(52px, 6vw, 80px); font-weight: 600; letter-spacing: -.04em; line-height: 1; }
.included { margin: 28px 0 34px; list-style: none; display: grid; gap: 10px; font-size: 18px; }
.included li { padding-left: 30px; position: relative; }
.included li::before { content: ""; position: absolute; left: 0; top: .35em; width: 16px; height: 16px; border-radius: 50%; border: 4px solid var(--yellow); }
.price-card .btn-solid { background: #fff; color: var(--c1); }
.price-card .btn-solid:hover { background: var(--ice); }
.prereq { background: var(--paper); border-radius: 30px; padding: 48px; }
.prereq ul { margin-top: 20px; list-style: none; display: grid; gap: 12px; font-size: 18px; }
.prereq li { padding-left: 22px; position: relative; }
.prereq li::before { content: ""; position: absolute; left: 0; top: .72em; width: 10px; height: 2px; background: var(--c1); }
.note { margin-top: 26px; color: var(--grey); }

/* signup */
.signup { background: var(--paper); padding: 110px 0 120px; }
.form { max-width: 720px; margin: 46px auto 0; padding: 0 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form label { display: grid; gap: 6px; font-size: 14px; font-weight: 500; color: var(--grey); }
.form input { font: inherit; font-size: 17px; color: var(--ink); padding: 15px 16px; border-radius: 14px; border: 1.5px solid var(--line); background: #fff; }
.form input:focus { border-color: var(--c1); outline: none; box-shadow: 0 0 0 4px rgba(20,70,224,.12); }
.form input[aria-invalid="true"] { border-color: #C0392B; }
.form button { grid-column: 1 / -1; justify-self: start; margin-top: 6px; }
.form-msg { grid-column: 1 / -1; min-height: 1.5em; font-weight: 500; }
.form-msg.ok { color: var(--c2); }
.form-msg.err { color: #C0392B; }
.pay { max-width: 720px; margin: 30px auto 0; padding: 26px 24px 0; border-top: 1px solid var(--line); display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }

.foot { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; padding: 34px max(24px, calc((100vw - var(--max)) / 2)); color: var(--grey); font-size: 14px; border-top: 1px solid var(--line); }

/* reveal start state (only when JS + motion are allowed) */
.anim .up { opacity: 0; transform: translateY(28px); }
.anim .scene-head .eyebrow, .anim .scene-head .lede, .anim .scene-head .cta, .anim .scene-head h1 .w, .anim .stage { opacity: 0; }

/* responsive */
@media (max-width: 900px) {
  .figures { grid-template-columns: repeat(3, 1fr); }
  .price { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; max-width: 460px; }
  .day-band { grid-template-columns: 1fr; }
  .day-band .mini { max-width: 220px; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .nav-links { display: none; }
  .nav .btn-small { margin-left: auto; }
  .scene { height: auto; }
  .scene-pin { position: relative; height: auto; padding: 60px 16px; overflow: visible; }
  .scene-cap, #cap2 { display: none; }
  .scene-head { padding-top: 48px; margin-bottom: 30px; }
  .stage { width: min(76vw, 400px); margin-top: 0; }
  .docs { position: static; display: grid; gap: 20px; margin-top: 40px; pointer-events: auto; }
  .doc, .doc[data-day] { position: static; width: auto; transform: none; text-align: left; display: grid; grid-template-columns: 72px 1fr; column-gap: 14px; align-items: center; }
  .doc .ring { width: 72px; height: 72px; border-width: 4px; margin: 0; grid-row: span 3; }
  .stage { aspect-ratio: auto; }
  .tilt { position: relative; aspect-ratio: 820 / 680; }
  .figures { grid-template-columns: repeat(2, 1fr); padding: 60px 16px; }
  .day-band { padding: 28px 22px; }
  .mods { padding: 4px 18px 18px; }
  .mod summary { grid-template-columns: 44px 1fr 22px; }
  .mod .t { grid-column: 2; grid-row: 2; text-align: left; }
  .mod .plus { grid-column: 3; grid-row: 1; }
  .mod ul { margin-left: 58px; }
  .lunch { padding-left: 58px; }
  .price { padding: 56px 16px; }
  .price-card, .prereq { padding: 32px 24px; }
  .form { grid-template-columns: 1fr; padding: 0 16px; }

  /* phone pass: the arch shows on the first screen, touch targets >= 44 px, a shorter page */
  .nav { padding: 8px 16px; }
  .nav-logo { display: flex; align-items: center; min-height: 44px; }
  .nav .btn-small { min-height: 44px; padding: 0 18px; }
  .head { padding: 0 16px; }
  .head h2 { font-size: 34px; }
  .lede { font-size: 17px; }
  .scene-pin { padding: 8px 16px 48px; }
  .scene-head { padding-top: 28px; margin-bottom: 22px; }
  .scene-head h1 { font-size: 42px; }
  .scene-head .lede { font-size: 16.5px; margin-top: 12px; }
  .scene-head .cta { margin-top: 20px; gap: 12px 18px; }
  .scene-head .link { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 0 4px; }
  .stage { width: min(84vw, 400px); }
  .teeth span { font-size: 11px; }
  .doc .d-day, .expert .d-day, .lunch { font-size: 13px; }

  .film { padding: 64px 16px; }
  .film-frame { margin-top: 28px; border-radius: 20px;
    background: linear-gradient(rgba(5,12,51,.28), rgba(5,12,51,.28)), url("assets/video-poster.jpg") center / cover; }
  .film-poster { justify-content: center; padding-top: 0; gap: 10px; }
  .film-poster img { display: none; }
  .film-play { width: 68px; height: 68px; }
  .film-play::after { left: 27px; top: 21px; border-left-width: 18px; border-top-width: 13px; border-bottom-width: 13px; }
  .film-state { font-size: 13px; }

  /* 3 + 2 figures instead of 2 + 2 + an orphan */
  .figures { grid-template-columns: repeat(6, 1fr); gap: 28px 12px; padding: 24px 16px 40px; }
  .fig { grid-column: span 2; }
  .fig:nth-child(n+4) { grid-column: span 3; }
  .fig strong { font-size: 46px; }
  .fig span { font-size: 14px; }

  /* programme: titles and times first, the detail on tap */
  .program { padding: 56px 0 32px; }
  #days { margin-top: 32px; padding: 0 12px; gap: 24px; }
  .day { border-radius: 22px; }
  .day-band { padding: 24px 20px 20px; position: relative; }
  .day-band .d-k { font-size: 12px; letter-spacing: .08em; }
  .day-band h3 { font-size: 28px; }
  .day-band .mini { position: absolute; right: 10px; top: 14px; width: 92px; opacity: .9; }
  .day-band .d-k, .day-band h3 { padding-right: 92px; }
  .mods { padding: 0 16px 8px; }
  .mod summary { padding: 16px 0; gap: 4px 12px; }
  .mod h4 { font-size: 16.5px; }
  .mod .desc { display: none; }
  .mod[open] .desc { display: block; }
  .mod .t { font-size: 14px; }
  .mod .t span { display: inline; margin-left: 8px; }
  .mod .plus { margin-top: 2px; }

  .experts { padding: 64px 0; }
  .expert-grid { margin-top: 32px; padding: 0 16px; gap: 20px; }
  .expert img { aspect-ratio: 4 / 3; object-position: 50% 22%; }
  .expert div { padding: 18px 20px 22px; }

  .signup { padding: 64px 0 72px; }
  .form { margin-top: 28px; gap: 14px; }
  .form button { justify-self: stretch; min-height: 52px; }
  .foot { padding: 28px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .scene { height: auto; }
  .scene-pin { position: relative; height: auto; }
  #cap2 { display: none; }
}
@media (prefers-reduced-motion: reduce) and (min-width: 761px) {
  .scene-pin { padding: 80px 16px 60px; }
  .stage { margin-top: 170px; }                /* room for the doctor of day 2 above the arch, desktop only */
}

[hidden] { display: none !important; }
.nw { white-space: nowrap; }