/* Guides Clair — feuille de style commune (claire, lumineuse, rapide) */
:root{
  --brand:#0e7c86; --brand-2:#14a3a8; --brand-soft:#e6f6f6; --accent:#f2a516;
  --ink:#13232b; --ink-2:#3d525c; --muted:#61747d; --line:#dde8ea;
  --bg:#ffffff; --bg-2:#f5fafb; --card:#ffffff;
  --ok:#1f8a4c; --ok-soft:#e8f6ee; --warn:#b5600b; --warn-soft:#fff4e3; --info-soft:#eaf4fd; --info:#1f6fb2;
  --radius:14px; --radius-s:10px; --shadow:0 6px 24px rgba(19,35,43,.07); --shadow-s:0 2px 8px rgba(19,35,43,.06);
  --maxw:1160px; --read:740px;
  --font: system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);font-size:17px;line-height:1.65}
img,svg{max-width:100%;height:auto}
a{color:var(--brand);text-underline-offset:3px}
a:hover{color:var(--brand-2)}
h1,h2,h3,h4{line-height:1.25;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4.4vw,2.9rem);margin:.2em 0 .4em}
h2{font-size:clamp(1.4rem,2.8vw,1.9rem);margin:2.2em 0 .6em;scroll-margin-top:90px}
h3{font-size:1.2rem;margin:1.6em 0 .5em;scroll-margin-top:90px}
p{margin:0 0 1em}
ul,ol{padding-left:1.3em;margin:0 0 1.1em}
li{margin:.3em 0}
strong{color:var(--ink)}
.skip{position:absolute;left:-999px;top:0;background:var(--brand);color:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px;top:8px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 16px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.12rem;color:var(--ink);text-decoration:none}
.logo svg{width:34px;height:34px;flex:none}
.logo small{display:block;font-weight:500;font-size:.72rem;color:var(--muted);letter-spacing:.02em}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{padding:8px 11px;border-radius:999px;color:var(--ink-2);text-decoration:none;font-size:.95rem;font-weight:550}
.nav a:hover,.nav a[aria-current=page]{background:var(--brand-soft);color:var(--brand)}
.menu{display:none}
@media (max-width:940px){
  .nav{display:none}
  .menu{display:block;position:relative}
  .menu summary{list-style:none;cursor:pointer;padding:9px 14px;border:1px solid var(--line);border-radius:999px;font-weight:650;color:var(--ink)}
  .menu summary::-webkit-details-marker{display:none}
  .menu[open] .menu-panel{display:flex}
  .menu-panel{display:none;position:absolute;right:0;top:calc(100% + 8px);flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px;min-width:250px}
  .menu-panel a{padding:10px 12px;border-radius:8px;text-decoration:none;color:var(--ink)}
  .menu-panel a:hover{background:var(--brand-soft)}
}

/* Hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,var(--brand-soft) 0%,#ffffff 55%,#fff9ec 100%);border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;padding-top:46px;padding-bottom:46px}
.hero p.lead{font-size:1.15rem;color:var(--ink-2);max-width:620px}
.hero .art{filter:drop-shadow(0 18px 30px rgba(14,124,134,.13))}
.kicker{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;color:var(--brand);background:#fff;border:1px solid var(--line);padding:5px 12px;border-radius:999px}
.cta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border-radius:999px;font-weight:700;text-decoration:none;border:2px solid var(--brand);background:var(--brand);color:#fff;cursor:pointer;font-size:1rem;font-family:inherit}
.btn:hover{background:var(--brand-2);border-color:var(--brand-2);color:#fff}
.btn.ghost{background:#fff;color:var(--brand)}
.btn.ghost:hover{background:var(--brand-soft);color:var(--brand)}
.trust{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:20px;color:var(--muted);font-size:.9rem}
.trust span::before{content:"✓ ";color:var(--ok);font-weight:800}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;padding-top:30px;padding-bottom:30px}.hero .art{max-width:460px;margin:0 auto}}

/* Page header (articles) */
.page-head{background:linear-gradient(180deg,var(--bg-2),#fff);border-bottom:1px solid var(--line)}
.page-head .wrap{padding-top:22px;padding-bottom:26px}
.crumbs{font-size:.86rem;color:var(--muted);margin-bottom:6px}
.crumbs a{color:var(--muted)}
.crumbs span[aria-hidden]{margin:0 6px}
.meta{display:flex;flex-wrap:wrap;gap:6px 16px;color:var(--muted);font-size:.88rem;margin-top:6px}
.page-head .lead{font-size:1.12rem;color:var(--ink-2);max-width:var(--read)}

/* Layout article */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:44px;padding-top:30px;padding-bottom:50px}
.layout.full{grid-template-columns:minmax(0,1fr)}
.content{max-width:var(--read);min-width:0}
.layout.full .content{max-width:none}
.toc{position:sticky;top:86px;align-self:start;font-size:.92rem;border-left:3px solid var(--brand-soft);padding-left:16px}
.toc strong{display:block;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px}
.toc ol{list-style:none;padding:0;margin:0}
.toc a{display:block;padding:5px 0;color:var(--ink-2);text-decoration:none;line-height:1.35}
.toc a:hover,.toc a.on{color:var(--brand)}
@media (max-width:980px){.layout{grid-template-columns:1fr}.toc{display:none}}

/* Sections */
.section{padding:56px 0}
.section.alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section h2{margin-top:0}
.section-intro{max-width:720px;color:var(--ink-2);font-size:1.07rem;margin-bottom:26px}

/* Cards */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:980px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-s);transition:transform .2s ease,box-shadow .2s ease}
a.card{display:block;text-decoration:none;color:inherit}
a.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);color:inherit}
.card h3{margin:.2em 0 .35em;font-size:1.1rem}
.card p{color:var(--ink-2);margin:0;font-size:.97rem}
.card .ico{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);display:grid;place-items:center;margin-bottom:10px}
.card .ico svg{width:26px;height:26px}
.card .more{display:inline-block;margin-top:10px;font-weight:700;color:var(--brand);font-size:.94rem}
.price-tag{display:inline-block;font-weight:800;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:3px 10px;font-size:.88rem;margin-top:8px}

/* Callouts */
.note{border-radius:var(--radius-s);padding:14px 16px 14px 18px;margin:1.3em 0;border:1px solid var(--line);background:var(--info-soft);border-left:5px solid var(--info)}
.note.ok{background:var(--ok-soft);border-left-color:var(--ok)}
.note.warn{background:var(--warn-soft);border-left-color:var(--warn)}
.note p:last-child,.note ul:last-child{margin-bottom:0}
.note strong:first-child{display:block;margin-bottom:3px}
.keyfacts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:1.4em 0}
.keyfacts div{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-s);padding:14px}
.keyfacts b{display:block;font-size:1.45rem;color:var(--brand);line-height:1.15}
.keyfacts span{font-size:.9rem;color:var(--ink-2)}
@media (max-width:620px){.keyfacts{grid-template-columns:1fr}}

/* Tables */
.table-wrap{overflow-x:auto;margin:1.2em 0;border:1px solid var(--line);border-radius:var(--radius-s)}
table{border-collapse:collapse;width:100%;font-size:.95rem;background:#fff}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--bg-2);font-weight:700;color:var(--ink)}
tr:last-child td{border-bottom:0}
caption{caption-side:bottom;text-align:left;padding:8px 12px;color:var(--muted);font-size:.85rem}

/* Steps */
.steps{list-style:none;padding:0;margin:1.4em 0;counter-reset:s}
.steps li{position:relative;padding:0 0 18px 54px;margin:0;counter-increment:s}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;display:grid;place-items:center}
.steps li::after{content:"";position:absolute;left:17px;top:38px;bottom:2px;width:2px;background:var(--brand-soft)}
.steps li:last-child::after{display:none}
.steps b{display:block}

/* Tools (calculateurs, quiz) */
.tool{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin:1.6em 0}
.tool h2,.tool h3{margin-top:0}
.tool .row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media (max-width:620px){.tool .row{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.field label,.field .lbl{font-weight:650;font-size:.95rem}
.field small{color:var(--muted)}
select,input[type=number]{font:inherit;padding:11px 12px;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);width:100%}
select:focus,input:focus{outline:3px solid var(--brand-soft);border-color:var(--brand)}
.checks{display:flex;flex-direction:column;gap:8px}
.checks label{display:flex;gap:10px;align-items:flex-start;font-weight:500;cursor:pointer}
.checks input{margin-top:5px;accent-color:var(--brand);width:18px;height:18px}
.result{margin-top:14px;border-radius:var(--radius-s);background:linear-gradient(135deg,var(--brand-soft),#fff);border:1px solid var(--line);padding:16px}
.result .big{font-size:clamp(1.5rem,4vw,2.1rem);font-weight:800;color:var(--brand);line-height:1.15}
.result ul{margin:.6em 0 0}
.result .fine{font-size:.85rem;color:var(--muted);margin-top:8px}
.choices{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 14px}
.choices button{font:inherit;font-size:.95rem;padding:10px 14px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--ink);cursor:pointer}
.choices button:hover{border-color:var(--brand)}
.choices button[aria-pressed=true]{background:var(--brand);border-color:var(--brand);color:#fff}
.quiz-step{display:none}
.quiz-step.on{display:block;animation:fadein .35s ease}
.progress{height:6px;background:var(--brand-soft);border-radius:99px;overflow:hidden;margin-bottom:16px}
.progress i{display:block;height:100%;width:0;background:var(--brand);transition:width .35s ease}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* Timeline mois */
.months{display:grid;grid-template-columns:repeat(12,1fr);gap:4px;margin:1em 0 .4em}
.months span{font-size:.72rem;text-align:center;color:var(--muted)}
.bar{height:12px;border-radius:99px;background:var(--bg-2);position:relative;margin:4px 0 12px;border:1px solid var(--line)}
.bar i{position:absolute;top:-1px;bottom:-1px;border-radius:99px;background:var(--brand)}
.bar i.b{background:var(--accent)}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:.86rem;color:var(--ink-2)}
.legend em{display:inline-block;width:12px;height:12px;border-radius:3px;background:var(--brand);margin-right:6px;vertical-align:-1px}
.legend em.b{background:var(--accent)}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:var(--radius-s);padding:4px 16px;margin:10px 0;background:#fff}
.faq summary{cursor:pointer;font-weight:700;padding:10px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;font-weight:800;color:var(--brand)}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--ink-2)}

/* Sources */
.sources{font-size:.88rem;color:var(--ink-2);background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-s);padding:14px 18px;margin-top:2em}
.sources h2{font-size:1.05rem;margin:0 0 .5em}
.sources ol{margin:0}
.sources a{word-break:break-word}
.updated{font-size:.86rem;color:var(--muted)}

/* Author box */
.author{display:flex;gap:14px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:2em 0;background:#fff}
.author .av{flex:none;width:48px;height:48px;border-radius:50%;background:var(--brand-soft);display:grid;place-items:center;font-weight:800;color:var(--brand)}
.author p{margin:0;font-size:.94rem;color:var(--ink-2)}

/* Footer */
.site-footer{background:#0f2229;color:#d6e3e6;padding:44px 0 26px;margin-top:40px;font-size:.93rem}
.site-footer a{color:#e8f2f4}
.site-footer .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}
@media (max-width:780px){.site-footer .cols{grid-template-columns:1fr}}
.site-footer h2{color:#fff;font-size:1rem;margin:0 0 .6em}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:.35em 0}
.site-footer .disc{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:16px;font-size:.84rem;color:#a9bec3}

/* Illustrations animées */
.flow{stroke-dasharray:6 10;animation:flow 1.6s linear infinite}
@keyframes flow{to{stroke-dashoffset:-32}}
.bob{animation:bob 4s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-6px)}}
.sun{transform-origin:center;transform-box:fill-box;animation:spin 40s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.on{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}
.pill{display:inline-block;font-size:.8rem;font-weight:700;padding:2px 9px;border-radius:999px;background:var(--brand-soft);color:var(--brand);margin-right:6px}
.pill.warn{background:var(--warn-soft);color:var(--warn)}
.pill.ok{background:var(--ok-soft);color:var(--ok)}
.center{text-align:center}
.small{font-size:.88rem;color:var(--muted)}
hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.result .big.sm{font-size:1.35rem}
.btn.sm{padding:6px 12px;font-size:.85rem}
input[type=text],input[type=email],input[type=tel],textarea{font:inherit;padding:11px 12px;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);width:100%}
[aria-invalid=true]{border-color:var(--warn)!important;outline:3px solid var(--warn-soft)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.tool.lead{border:2px solid var(--brand);position:relative}
.tool.lead .btn{margin-top:6px}

/* ===== Mobile d'abord, leviers d'usage ===== */
.btn.cta{background:var(--accent);border-color:var(--accent);color:#1d1400}
.btn.cta:hover{filter:brightness(.95);color:#1d1400;background:var(--accent);border-color:var(--accent)}
.btn{min-height:48px;justify-content:center}
.tldr{background:linear-gradient(135deg,#fff,var(--brand-soft));border:1px solid var(--line);border-left:5px solid var(--brand);border-radius:var(--radius-s);padding:14px 18px;margin:0 0 1.6em}
.tldr strong{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--brand);margin-bottom:4px}
.tldr ul{margin:0;padding-left:1.1em}
.tldr li{margin:.25em 0}
.next{margin:12px 0 0}
.toc-m{display:none;border:1px solid var(--line);border-radius:var(--radius-s);padding:4px 14px;margin:0 0 1.4em;background:#fff}
.toc-m summary{cursor:pointer;font-weight:700;padding:10px 0;list-style:none}
.toc-m summary::-webkit-details-marker{display:none}
.toc-m summary::after{content:"▾";float:right;color:var(--brand)}
.toc-m ol{margin:0 0 10px;padding-left:1.2em}
.toc-m a{display:block;padding:6px 0;text-decoration:none}
.readbar{position:fixed;left:0;right:0;top:0;height:3px;z-index:60;pointer-events:none}
.readbar i{display:block;height:100%;background:var(--accent);transform-origin:0 50%;transform:scaleX(0)}
.mbar{display:none}
@media (max-width:980px){.toc-m{display:block}}
@media (max-width:760px){
  body{font-size:16.5px}
  .mbar{display:flex;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:55;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--line);box-shadow:0 -6px 18px rgba(19,35,43,.08)}
  .mbar .btn{flex:1;padding:10px 12px;font-size:.95rem}
  body.has-mbar{padding-bottom:78px}
  .hero .wrap{gap:18px}
  .hero .art{max-width:320px}
  .cta-row .btn{flex:1 1 100%}
  .section{padding:38px 0}
  .tool{padding:16px;margin:1.2em 0}
  .menu-panel a{padding:13px 12px}
  .choices button{flex:1 1 100%;text-align:left;padding:13px 14px}
  .site-footer{padding-bottom:96px}
}
@media (max-width:620px){
  .table-wrap{border:0;overflow:visible}
  .table-wrap table,.table-wrap tbody,.table-wrap tr,.table-wrap td{display:block;width:100%}
  .table-wrap thead{position:absolute;left:-9999px;top:auto}
  .table-wrap table{background:transparent}
  .table-wrap tr{border:1px solid var(--line);border-radius:12px;margin:0 0 12px;padding:6px 14px;background:#fff;box-shadow:var(--shadow-s)}
  .table-wrap td{border:0;padding:6px 0}
  .table-wrap td::before{content:attr(data-label);display:block;font-size:.74rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
  .table-wrap td:first-child{font-weight:700;color:var(--ink);padding-top:10px}
  .table-wrap td:first-child::before{display:none}
  caption{display:block;padding:0 2px 8px}
}
.dc-ok{color:var(--ok);font-weight:800}
@media (max-width:760px){.mbar{transform:translateY(115%);transition:transform .3s ease}.mbar.show{transform:none}}
.related{margin-top:2.4em}
.related .card h3{font-size:1.02rem}
.related .card p{font-size:.92rem}