/* InStudy v2: white textured frame, grey-black panel, bold uppercase white, orange-pink light. */
:root { --frame: #f2efe9; --panel: #151517; --panel-2: #1c1c1f; --white: #fff; --soft: rgba(255,255,255,.72); --dim: rgba(255,255,255,.45);
  --line: rgba(255,255,255,.09); --glow: #ffb39e; --glow-2: #ff9db8;
  --sans: "Hanken Grotesk", system-ui, sans-serif; --mono: "IBM Plex Mono", ui-monospace, monospace; }
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--frame); color: var(--white); font: 400 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .55; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .45 0 0 0 0 .42 0 0 0 0 .38 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
h1, h2, h3, p, dl, dd, ol, ul, figure { margin: 0; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--glow); outline-offset: 4px; }
em { font-style: normal; color: var(--glow); }
.k { font: 400 12px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--glow); }

.panel { position: relative; z-index: 1; margin: 14px; border-radius: 22px; background: var(--panel); overflow: hidden; }
.top { display: flex; justify-content: space-between; align-items: center; padding: 24px 30px; }
.brand { font: 600 18px/1 var(--sans); letter-spacing: -.02em; text-decoration: none; }
.brand i { font-style: italic; font-weight: 400; opacity: .75; }
.top nav { display: flex; gap: 10px; align-items: center; }
.top nav a { font: 400 12px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--soft); text-decoration: none; padding: 10px 14px; border-radius: 999px; transition: color .2s, box-shadow .2s; }
.top nav a:hover { color: #fff; }
.top nav .pill { box-shadow: inset 0 0 0 1px rgba(255,255,255,.18); }
.top nav .pill:hover { box-shadow: inset 0 0 0 1px rgba(255,255,255,.45); }

.wrap, .hero, .meta, .brief, .sec, .next, .list, .final { margin-left: auto; margin-right: auto; max-width: 1180px; padding-left: 30px; padding-right: 30px; }

/* Hero */
.hero { padding-top: 110px; padding-bottom: 70px; }
.hero h1 { margin-top: 22px; max-width: 18ch; font: 900 clamp(38px, 5.6vw, 96px)/.96 var(--sans); letter-spacing: -.02em; text-transform: uppercase; text-wrap: balance;
  text-shadow: 0 0 40px rgba(255,255,255,.12); }
.hero .summary { margin-top: 30px; max-width: 58ch; font-size: clamp(17px, 1.4vw, 20px); color: var(--soft); }
.figure { margin-top: 40px; display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.figure b { font: 900 clamp(44px, 5vw, 80px)/1 var(--sans); letter-spacing: -.03em; color: var(--glow); text-shadow: 0 0 40px rgba(255,157,184,.35); }
.figure span { font: 400 13px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); max-width: 30ch; }

/* Meta row */
.meta { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding-top: 0; padding-bottom: 0; }
.meta div { padding: 20px 20px 20px 0; }
.meta dt, .brief dt, .team dt { font: 400 11px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--dim); margin-bottom: 6px; }
.meta dd { font-size: 15px; line-height: 1.4; color: #fff; }

/* Brief */
.brief { padding-top: 70px; }
.brief dl { margin-top: 18px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.brief dl div { background: var(--panel-2); border-radius: 16px; padding: 24px; box-shadow: inset 0 0 0 1px var(--line); }
.brief dd { font: 500 17px/1.45 var(--sans); }
.brief .verified { box-shadow: inset 0 0 0 1px rgba(255,179,158,.45), 0 0 50px -20px rgba(255,157,184,.5); }
.brief .verified dt { color: var(--glow); }

/* Sections */
.sec { padding-top: 110px; display: grid; grid-template-columns: 1fr; gap: 40px; }
.sec-head h2 { margin-top: 16px; max-width: 22ch; font: 900 clamp(30px, 3.6vw, 58px)/1 var(--sans); letter-spacing: -.02em; text-transform: uppercase; text-wrap: balance; }
.sec-head h2.long { max-width: 34ch; font-size: clamp(24px, 2.4vw, 38px); line-height: 1.1; }
.sec-body { display: flex; flex-direction: column; gap: 36px; }
.sec h3 { font: 900 18px/1.2 var(--sans); letter-spacing: .02em; text-transform: uppercase; }
.lead { max-width: 66ch; font-size: clamp(17px, 1.35vw, 20px); color: var(--soft); }
.arbitrage { border-left: 2px solid var(--glow); padding: 6px 0 6px 22px; max-width: 64ch; }
.arbitrage p { margin-top: 10px; font: 500 19px/1.5 var(--sans); }
.team { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; }
.team div { border-top: 1px solid var(--line); padding-top: 14px; }
.team dd { font-size: 15.5px; color: #fff; }

.steps { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; counter-reset: s; }
.steps li { counter-increment: s; background: var(--panel-2); border-radius: 16px; padding: 24px; box-shadow: inset 0 0 0 1px var(--line); display: flex; flex-direction: column; gap: 8px; }
.steps li::before { content: "0" counter(s); font: 400 11px/1 var(--mono); color: var(--dim); }
.steps b { font: 600 18px/1.25 var(--sans); }
.steps p { font-size: 15px; color: var(--soft); }
.rationale, .limits { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.rationale li, .limits li { border-top: 1px solid var(--line); padding-top: 18px; }
.rationale b, .limits b { display: block; font: 600 18px/1.3 var(--sans); margin-bottom: 8px; }
.rationale p, .limits p { font-size: 15.5px; color: var(--soft); }

.qs { list-style: none; padding: 0; counter-reset: q; border-top: 1px solid var(--line); }
.qs li { counter-increment: q; display: grid; grid-template-columns: 60px 1fr; padding: 22px 0; border-bottom: 1px solid var(--line); font: 500 clamp(19px, 1.7vw, 24px)/1.3 var(--sans); }
.qs li::before { content: "Q" counter(q); font: 400 12px/2.2 var(--mono); color: var(--glow); }

.insights { list-style: none; padding: 0; border-top: 1px solid var(--line); }
.insights > li { display: grid; grid-template-columns: 200px 1fr; gap: 32px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.insights .fig { font: 900 clamp(34px, 3.4vw, 54px)/1 var(--sans); letter-spacing: -.03em; color: var(--glow); overflow-wrap: anywhere; }
.insights b { display: block; font: 900 clamp(19px, 1.6vw, 24px)/1.2 var(--sans); text-transform: uppercase; letter-spacing: -.005em; margin-bottom: 12px; }
.insights p { max-width: 64ch; color: var(--soft); }
.quotes { list-style: none; padding: 0; margin-top: 18px; display: flex; flex-direction: column; gap: 12px; }
.quotes li { padding-left: 16px; border-left: 1px solid rgba(255,179,158,.4); }
.quotes q { font-size: 17px; font-style: italic; color: #fff; }
.quotes span { display: block; margin-top: 4px; font: 400 11px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }

.evidence { background: var(--panel-2); border-radius: 18px; padding: 30px; box-shadow: inset 0 0 0 1px var(--line); }
.evidence h3 { margin: 10px 0 20px; }
.evidence table { width: 100%; border-collapse: collapse; font-size: 15px; }
.evidence th { text-align: left; font: 400 11px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); padding: 0 12px 12px 0; border-bottom: 1px solid var(--line); }
.evidence td { padding: 14px 12px 14px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.evidence td.ok { color: var(--glow); } .evidence td.partial { color: var(--dim); }

.clips { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; }
.clip video { width: 100%; border-radius: 14px; background: #000; display: block; }
.clip figcaption { margin-top: 10px; font: 400 11px/1.5 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--dim); }

.recos { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.recos li { background: var(--panel-2); border-radius: 16px; padding: 26px; box-shadow: inset 0 0 0 1px var(--line); }
.prio { display: inline-block; font: 400 11px/1 var(--mono); letter-spacing: .08em; padding: 6px 9px; border-radius: 999px; background: rgba(255,179,158,.12); color: var(--glow); }
.recos b { display: block; margin: 14px 0 8px; font: 600 19px/1.3 var(--sans); }
.recos p { font-size: 15.5px; color: var(--soft); }

.impact { border-radius: 18px; padding: 30px; background: var(--panel-2); box-shadow: inset 0 0 0 1px var(--line); max-width: 760px; }
.impact p { margin-top: 12px; font: 500 clamp(18px, 1.5vw, 22px)/1.45 var(--sans); }
.impact.verified { box-shadow: inset 0 0 0 1px rgba(255,179,158,.45), 0 0 80px -30px rgba(255,157,184,.6); }

/* Next + list */
.next { display: grid; grid-template-columns: 1fr auto; gap: 10px 24px; align-items: end; margin-top: 120px; padding-top: 40px; padding-bottom: 40px; border-top: 1px solid var(--line); text-decoration: none; }
.next b { grid-column: 1; font: 900 clamp(24px, 2.8vw, 44px)/1.05 var(--sans); text-transform: uppercase; letter-spacing: -.01em; max-width: 26ch; transition: color .2s; }
.next .arrow { grid-column: 2; grid-row: 1 / 3; font-size: 40px; color: var(--glow); transition: transform .2s; }
.next:hover b { color: var(--glow); } .next:hover .arrow { transform: translateX(6px); }

.list { list-style: none; padding-bottom: 40px; }
.list li { border-top: 1px solid var(--line); }
.list li:last-child { border-bottom: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 220px 1fr 220px; gap: 28px; align-items: baseline; padding: 30px 0; text-decoration: none; transition: padding .25s ease; }
a.row:hover { padding-left: 12px; } a.row:hover b { color: var(--glow); }
.row b { font: 900 clamp(20px, 1.9vw, 28px)/1.15 var(--sans); text-transform: uppercase; letter-spacing: -.005em; transition: color .2s; }
.row .fig { font: 900 30px/1 var(--sans); color: var(--glow); text-align: right; }
.row .fig small { display: block; margin-top: 8px; font: 400 11px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--dim); }
.row .tag { justify-self: end; font: 400 11px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; padding: 6px 10px; border-radius: 999px; background: rgba(255,179,158,.12); color: var(--glow); }
.row.soon b { color: var(--soft); }

/* Final */
.final { padding-top: 140px; padding-bottom: 90px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 36px; }
.final h2 { font: 900 clamp(32px, 4.6vw, 80px)/.98 var(--sans); text-transform: uppercase; letter-spacing: -.02em; text-shadow: 0 0 40px rgba(255,255,255,.1); }
.cta { display: inline-flex; align-items: center; gap: 10px; padding: 18px 30px; border-radius: 999px; background: #fff; color: #0b0b0c; font: 600 16px/1 var(--sans); text-decoration: none; box-shadow: 0 12px 40px -12px rgba(255,140,140,.35); transition: transform .2s, box-shadow .2s; }
.cta:hover { transform: translateY(-2px); box-shadow: 0 16px 50px -10px rgba(255,140,140,.5); }
.cred { font: 400 12px/1.5 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--dim); }
.cred a { color: rgba(255,255,255,.8); text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.25); }
.cred a:hover { color: #fff; border-color: var(--glow); }

@media (max-width: 900px) {
  .panel { margin: 10px; border-radius: 18px; }
  .top { padding: 18px; }
  .wrap, .hero, .meta, .brief, .sec, .next, .list, .final { padding-left: 20px; padding-right: 20px; }
  .hero { padding-top: 60px; padding-bottom: 50px; }
  .brief dl, .steps, .recos { grid-template-columns: 1fr; }
  .sec { padding-top: 80px; }
  .insights > li { grid-template-columns: 1fr; gap: 14px; }
  .row { grid-template-columns: 1fr; gap: 10px; }
  .row .fig, .row .tag { text-align: left; justify-self: start; }
  .evidence { padding: 20px; }
  .evidence thead { display: none; }
  .evidence tr { display: block; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .evidence td { display: block; border: 0; padding: 4px 0; }
  .evidence td::before { content: attr(data-label); display: block; font: 400 10px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }
  .final { padding-top: 90px; padding-bottom: 60px; }
}

/* Visuals */
.shot, .chart { margin-top: 26px; max-width: 760px; }
.shot img, .shot video { width: 100%; height: auto; display: block; border-radius: 14px; box-shadow: 0 0 0 1px var(--line), 0 30px 60px -30px rgba(0,0,0,.8); }
.shot figcaption, .chart figcaption { margin-top: 12px; font: 400 11px/1.5 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--dim); max-width: 70ch; }
.chart { background: var(--panel-2); border-radius: 18px; padding: 28px 28px 22px; box-shadow: inset 0 0 0 1px var(--line); }
.chart svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart text { text-anchor: middle; font-family: var(--sans); fill: rgba(255,255,255,.6); }
.chart .v { font-size: 22px; font-weight: 900; fill: #fff; }
.chart .v.on { fill: var(--glow); }
.chart .l { font: 400 13px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.chart .n { font: 400 11px var(--mono); fill: rgba(255,255,255,.4); }
.decision .chart, #decision .chart { max-width: 520px; }
.top nav a { white-space: nowrap; }
@media (max-width: 600px) {
  .top nav { gap: 2px; }
  .top nav a { padding: 9px 8px; font-size: 11px; }
  .top nav .d { display: none; }
  .brand { font-size: 16px; }
  .hero h1 { font-size: 10.5vw; }
  .sec-head h2 { font-size: 8.4vw; }
  .sec-head h2.long { font-size: 6vw; }
  .final h2 { font-size: 9.6vw; }
  .figure b { font-size: 13vw; }
  .meta { grid-template-columns: 1fr 1fr; }
  .meta div { padding: 16px 12px 16px 0; }
  .qs li { grid-template-columns: 40px 1fr; font-size: 18px; }
  .next { grid-template-columns: 1fr; }
  .next .arrow { display: none; }
  .next b { font-size: 7vw; }
  .row b { font-size: 6vw; }
  .row .fig { text-align: left; }
  .chart { padding: 18px 14px 14px; }
  .cred { font-size: 10.5px; }
}
@media (max-width: 600px) {
  .chart .v { font-size: 38px; } .chart .l { font-size: 24px; } .chart .n { font-size: 20px; }
}

/* CTA secondaire + témoignage */
.ctas { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.voice { margin: 120px auto 0; max-width: 880px; padding: 0 30px; text-align: center; }
.voice blockquote { margin: 0; font: 500 clamp(20px, 2vw, 28px)/1.4 var(--sans); color: #fff; text-wrap: balance; }
.voice blockquote::before { content: ""; display: block; width: 46px; height: 40px; margin: 0 auto 24px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='12 14 42 36'%3E%3Cg fill='%23ffb39e' stroke='%23ffb39e' stroke-linecap='round'%3E%3Cpath d='M14.5 37 Q14 23 26 17.5' fill='none' stroke-width='6.5'/%3E%3Ccircle cx='21.5' cy='39' r='8.5' stroke='none'/%3E%3Cpath d='M34.5 37 Q34 23 46 17.5' fill='none' stroke-width='6.5'/%3E%3Ccircle cx='41.5' cy='39' r='8.5' stroke='none'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat; filter: drop-shadow(0 0 18px rgba(255,157,184,.45)); }
.voice figcaption { margin-top: 20px; font: 400 12px/1.5 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--dim); }
.voice figcaption b { color: #fff; font-weight: 400; }
@media (max-width: 900px) { .voice { margin-top: 80px; padding: 0 20px; } }

/* Bandeau de consentement (analytics.js), styles propres à la v2 */
.consent { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 120; width: min(380px, calc(100% - 40px)); padding: 18px 20px; border-radius: 16px; display: flex; flex-direction: column; gap: 12px;
  background: #1c1c1f; color: #fff; box-shadow: inset 0 0 0 1px rgba(255,255,255,.12), 0 24px 60px -16px rgba(0,0,0,.8); font: 400 14px/1.5 "Hanken Grotesk", system-ui, sans-serif; }
.consent[hidden] { display: none; }
.consent p { margin: 0; color: rgba(255,255,255,.78); }
.consent strong, .consent b { color: #fff; }
.consent-actions { display: flex; gap: 8px; justify-content: flex-end; }
.consent .btn { display: inline-flex; align-items: center; padding: 10px 16px; border: 0; border-radius: 999px; font: 600 14px/1 "Hanken Grotesk", sans-serif; cursor: pointer; }
.consent .btn-ghost { background: transparent; color: #fff; box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.35); }
.consent .btn-primary { background: #fff; color: #0b0b0c; }

/* Guides */
.byline { margin-top: 22px; font: 400 12px/1.5 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--dim); }
.byline a { color: #fff; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.3); }
.short { list-style: none; margin: 18px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.short li { background: var(--panel-2); border-radius: 16px; padding: 22px 24px; box-shadow: inset 0 0 0 1px var(--line); font: 500 17px/1.45 var(--sans); }
.guide-sec { padding-top: 80px; gap: 24px; }
.guide-sec .sec-body { gap: 18px; }
.faq { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.faq div { padding: 24px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1.4fr; gap: 24px; }
.faq dt { font: 900 19px/1.25 var(--sans); text-transform: uppercase; }
.faq dd { margin: 0; color: var(--soft); }
.sources { font-size: 14px; color: var(--dim); } .sources a { color: var(--soft); }
.sec-body .list { padding: 0; }
.guides-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 18px; max-width: 900px; font-size: 14px; }
.guides-links span { font: 400 11px/1.9 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--glow); }
.guides-links a { color: var(--soft); text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.18); }
.guides-links a:hover { color: #fff; }
@media (max-width: 900px) { .short { grid-template-columns: 1fr; } .faq div { grid-template-columns: 1fr; gap: 8px; } }