/* =========================================================
   LA FORMULE (extends style.css + home.css + apropos.css for the closing band)
   ========================================================= */
body:has(.fo){background:#fff}
.fo{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:40px 24px 0;font-family:"Inter Tight",var(--font);color:#111}
.fo-eyebrow{font-size:10px;font-weight:600;letter-spacing:.3em;text-transform:uppercase;color:#777}
.fo-sec{margin-top:96px}
.fo-sec__head{text-align:center}
.fo-h{margin-top:8px;font-size:38px;line-height:1.08;letter-spacing:-.035em;font-weight:300}
.fo-h b{font-weight:700;letter-spacing:-.04em}
.fo-h--left{text-align:left}
.fo-sub{margin:10px auto 0;max-width:520px;font-size:14px;line-height:1.6;color:#5a5a5a}
.fo-sub--left{margin-left:0}

/* ---------- anatomy hero ---------- */
.fo-hero{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:center;min-height:560px}
.fo-title{margin-top:14px;font-size:50px;line-height:1.02;letter-spacing:-.045em;font-weight:300}
.fo-title span{display:block}
.fo-title b{font-weight:700}
.fo-lead{margin-top:18px;max-width:430px;font-size:15px;line-height:1.6;color:#555}
.fo-flav{margin-top:28px;display:inline-flex;gap:6px;padding:5px;border-radius:999px;background:#F2F2F0}
.fo-flav button{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;border:0;border-radius:999px;cursor:pointer;
  background:none;color:#555;font:500 13px "Inter Tight",var(--font);transition:background .25s,color .25s,box-shadow .25s;
}
.fo-flav button::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--c)}
.fo-flav button.is-on{background:#fff;color:#111;box-shadow:0 4px 12px rgba(0,0,0,.08)}
.fo-note{margin-top:12px;font-size:12px;color:#999}

.fo-anat{position:relative;height:540px;display:grid;place-items:center}
.fo-anat__halo{position:absolute;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(closest-side,color-mix(in srgb,var(--acc) 30%,transparent),transparent);transition:background .6s ease}
.fo-anat__halo::before,.fo-anat__halo::after{content:"";position:absolute;inset:-40px;border-radius:50%;border:1px solid rgba(17,17,17,.07)}
.fo-anat__halo::after{inset:-100px;border-style:dashed;animation:foSpin 60s linear infinite}
@keyframes foSpin{to{transform:rotate(360deg)}}
.fo-anat__stick{position:relative;z-index:1;height:440px;width:auto;filter:drop-shadow(0 26px 28px rgba(0,0,0,.16));transition:opacity .3s ease,transform .5s cubic-bezier(.22,.61,.36,1)}
.fo-anat__stick.is-out{opacity:0;transform:scale(.97)}

/* fibre lines from each label to the stick (paths built by js/formule.js) */
.fo-anat__lines{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.fo-line{fill:none;stroke:rgba(17,17,17,.22);stroke-width:1}
.fo-line--pulse{stroke:var(--acc);stroke-width:1.6;stroke-linecap:round;stroke-dasharray:14 86;stroke-dashoffset:100;animation:foPulse 3.2s linear infinite;transition:stroke .6s}
.fo-line__end{fill:#fff;stroke:#111;stroke-width:1.2}
@keyframes foPulse{to{stroke-dashoffset:0}}

.fo-anat__calls{list-style:none;position:absolute;inset:0}
.fo-call{position:absolute;display:flex;flex-direction:column;opacity:0;animation:foCall .7s cubic-bezier(.22,.61,.36,1) forwards;animation-delay:calc(.2s + var(--i) * .08s)}
@keyframes foCall{from{opacity:0}to{opacity:1}}
.fo-call b{font-size:19px;line-height:1.1;font-weight:600;letter-spacing:-.025em;font-variant-numeric:tabular-nums}
.fo-call span{margin-top:3px;font-size:10px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:#888}
.fo-call b,.fo-call span{transition:opacity .35s ease,transform .35s cubic-bezier(.22,.61,.36,1)}
.fo-call.is-swap b,.fo-call.is-swap span{opacity:0;transform:translateY(6px)}
.fo-call--l{left:2%;text-align:right;align-items:flex-end;width:120px}
.fo-call--r{right:2%;text-align:left;align-items:flex-start;width:120px}
.fo-call:nth-child(1),.fo-call:nth-child(4){top:15%}
.fo-call:nth-child(2),.fo-call:nth-child(5){top:44%}
.fo-call:nth-child(3),.fo-call:nth-child(6){top:73%}

/* ---------- dose meter ---------- */
.fo-scale{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
.fo-meter{padding:34px 30px 24px;border-radius:18px;background:#F7F7F5;border:1px solid #EFEFEC}
.fo-meter__track{position:relative;height:14px;border-radius:999px;background:#E6E6E2;margin-top:44px}
.fo-meter__range{position:absolute;left:var(--a);right:calc(100% - var(--b));top:0;bottom:0;border-radius:999px;
  background:linear-gradient(90deg,#FFD9E8,#FF1F8E 45%,#FFB800);transform-origin:0 50%;transform:scaleX(0);transition:transform 1.2s cubic-bezier(.22,.61,.36,1) .2s}
.fo-meter__range span{position:absolute;left:0;top:calc(100% + 12px);white-space:nowrap;font-size:11.5px;color:#666}
.fo-meter__mark{position:absolute;left:var(--x);top:50%;transform:translate(-50%,-50%);width:22px;height:22px;border-radius:50%;background:#111;border:4px solid #fff;box-shadow:0 4px 10px rgba(0,0,0,.2);opacity:0;transition:opacity .5s ease 1.1s}
.fo-meter__mark b{position:absolute;bottom:calc(100% + 10px);left:50%;transform:translateX(-50%);white-space:nowrap;padding:5px 10px;border-radius:8px;background:#111;color:#fff;font-size:12px;font-weight:600}
.fo-meter__mark span{position:absolute;bottom:calc(100% + 42px);left:50%;transform:translateX(-50%);white-space:nowrap;font-size:11px;font-weight:600;color:#111}
.is-in .fo-meter__range{transform:scaleX(1)}
.is-in .fo-meter__mark{opacity:1}
.fo-meter__axis{display:flex;justify-content:space-between;margin-top:40px;font-size:10.5px;color:#999;font-variant-numeric:tabular-nums}
.fo-meter figcaption{margin-top:16px;font-size:11px;color:#999}

/* ---------- explorer ---------- */
.fo-exp{margin-top:36px;display:grid;grid-template-columns:300px 1fr;gap:20px}
.fo-exp__tabs{display:flex;flex-direction:column;gap:4px}
.fo-exp__tabs button{
  display:flex;align-items:center;justify-content:space-between;gap:12px;height:46px;padding:0 16px;border:0;border-radius:12px;cursor:pointer;
  background:none;color:#555;font:500 14px "Inter Tight",var(--font);text-align:left;transition:background .2s,color .2s;
}
.fo-exp__tabs button b{font-weight:500;font-size:12.5px;color:#999;font-variant-numeric:tabular-nums}
.fo-exp__tabs button:hover{background:#F5F5F3;color:#111}
.fo-exp__tabs button.is-on{background:#111;color:#fff}
.fo-exp__tabs button.is-on b{color:rgba(255,255,255,.7)}
.fo-exp__panel{display:grid;grid-template-columns:190px 1fr;gap:36px;align-items:center;padding:36px;border-radius:20px;background:#F7F7F5;border:1px solid #EFEFEC}
.fo-ring{position:relative;width:190px;height:190px}
.fo-ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.fo-ring circle{fill:none;stroke-width:9;stroke-linecap:round}
.fo-ring__bg{stroke:#E6E6E2}
.fo-ring__fg{stroke:#111;stroke-dasharray:0 100;transition:stroke-dasharray .9s cubic-bezier(.22,.61,.36,1)}
.fo-ring__val{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.fo-ring__val b{font-size:32px;font-weight:600;letter-spacing:-.03em}
.fo-ring__val span{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:#888;margin-top:2px}
.fo-exp__body{transition:opacity .2s ease}
.fo-exp__body.is-out{opacity:0}
.fo-exp__form{font-size:10.5px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:#888}
.fo-exp__body h3{margin-top:8px;font-size:30px;line-height:1.1;letter-spacing:-.03em;font-weight:300}
.fo-exp__body h3 b{font-weight:700}
.fo-exp__label{margin-top:18px;font-size:10.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:#999}
.fo-exp__body p:not(.fo-exp__form):not(.fo-exp__label){margin-top:6px;font-size:14px;line-height:1.6;color:#444}

/* ---------- composition ---------- */
.fo-comp{display:grid;grid-template-columns:1.35fr .9fr;gap:40px;align-items:start}
.fo-table-wrap{margin-top:24px;overflow-x:auto}
.fo-table{width:100%;border-collapse:collapse;font-size:13.5px}
.fo-table th,.fo-table td{padding:12px 10px;text-align:left;border-bottom:1px solid #EDEDED}
.fo-table thead th{font-size:10px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:#999;border-bottom:1px solid #111}
.fo-table tbody th{font-weight:600}
.fo-table td{color:#555}
.fo-table td:nth-child(3),.fo-table td:nth-child(4){font-variant-numeric:tabular-nums;color:#111;white-space:nowrap}
.fo-table tbody tr{transition:background .2s}
.fo-table tbody tr:hover{background:#FAFAF8}
.fo-fine{margin-top:12px;font-size:11px;line-height:1.5;color:#999}
.fo-not{position:sticky;top:100px;padding:30px;border-radius:20px;background:#0B0B0B;color:#fff;overflow:hidden}
.fo-not::before{content:"";position:absolute;right:-30%;top:-40%;width:90%;height:90%;border-radius:50%;background:radial-gradient(closest-side,rgba(255,31,142,.25),transparent);pointer-events:none}
.fo-not h3{position:relative;font-size:22px;line-height:1.2;letter-spacing:-.02em;font-weight:600}
.fo-not ul{position:relative;list-style:none;margin-top:20px;display:flex;flex-direction:column;gap:12px}
.fo-not li{display:flex;align-items:center;gap:12px;font-size:14px;color:rgba(255,255,255,.8);text-decoration:line-through;text-decoration-color:rgba(255,255,255,.45)}
.fo-not li::before{content:"";flex:none;width:22px;height:22px;border-radius:50%;border:1px solid rgba(255,255,255,.3);
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M8 8l8 8M16 8l-8 8' stroke='white' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E") center/14px no-repeat}
.fo-not p{position:relative;margin-top:22px;font-size:12.5px;line-height:1.55;color:rgba(255,255,255,.55)}

/* ---------- regulatory ---------- */
.fo-reg{margin-top:72px;display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:center;padding:30px 36px;border-radius:20px;border:1px solid #ECECEC;background:#fff;box-shadow:0 14px 40px rgba(17,17,17,.05)}
.fo-reg__logo{display:grid;place-items:center;height:110px;padding:18px;border-radius:14px;background:#F7F8FA}
.fo-reg__logo img{width:100%;max-width:170px;height:auto}
.fo-reg h2{margin-top:8px;font-size:24px;letter-spacing:-.022em;font-weight:600}
.fo-reg__txt > p:last-child{margin-top:8px;max-width:620px;font-size:14px;line-height:1.6;color:#555}

/* ---------- how to ---------- */
.fo-how{list-style:none;margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:none}
.fo-how li{padding:26px 24px;border-radius:16px;background:#F7F7F5;border:1px solid #EFEFEC;transition:transform .35s cubic-bezier(.22,.61,.36,1),box-shadow .35s,background .35s}
.fo-how li:hover{transform:translateY(-3px);background:#fff;box-shadow:0 16px 36px rgba(17,17,17,.07)}
.fo-how__n{font-size:12px;font-weight:700;letter-spacing:.06em;background:linear-gradient(90deg,#FF1F8E,#FFB800);-webkit-background-clip:text;background-clip:text;color:transparent}
.fo-how h3{margin-top:22px;font-size:18px;font-weight:600;letter-spacing:-.02em}
.fo-how p{margin-top:6px;font-size:13px;line-height:1.55;color:#666}
.fo-how__note{margin-top:18px;text-align:center;font-size:12.5px;color:#888}

/* ---------- sources ---------- */
.fo-sources{margin-top:80px;padding-top:28px;border-top:1px solid #EEE;max-width:760px}
.fo-sources h2{font-size:16px;font-weight:600}
.fo-sources ol{margin-top:10px;padding-left:18px;font-size:12.5px;line-height:1.6;color:#555}
.fo-sources li{margin-top:6px}
.fo-sources a{color:#111}
.fo-sources > p{margin-top:16px;font-size:11.5px;line-height:1.6;color:#999}
.fo-end{margin-top:72px}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .fo-hero,.fo-scale,.fo-comp{grid-template-columns:1fr}
  .fo-exp{grid-template-columns:1fr}
  .fo-exp__tabs{flex-direction:row;overflow-x:auto;padding-bottom:4px}
  .fo-exp__tabs button{flex:none}
  .fo-not{position:static}
}
@media (max-width:640px){
  .fo{padding:28px 16px 0}
  .fo-title{font-size:36px}
  .fo-h{font-size:30px}
  .fo-anat{height:440px}
  .fo-anat__stick{height:340px}
  .fo-call{width:90px}
  .fo-call b{font-size:15px}
  .fo-call--l{left:0}.fo-call--r{right:0}
  .fo-exp__panel{grid-template-columns:1fr;justify-items:start;padding:26px 22px}
  .fo-ring{width:140px;height:140px}
  .fo-how{grid-template-columns:1fr}
  .fo-reg{grid-template-columns:1fr;gap:20px;padding:24px}
  .fo-meter{padding:28px 18px 20px}
}
@media (prefers-reduced-motion:reduce){
  .fo-anat__halo::after,.fo-line--pulse{animation:none}
  .fo-line--pulse{display:none}
  .fo-call{animation:none;opacity:1}
  .fo-meter__range{transition:none;transform:none}
  .fo-meter__mark{transition:none;opacity:1}
}