:root{
/* DA « carnet de métré » — mode light. Un seul accent (--primary), réservé aux chiffres, aux prix et aux CTA. */
--primary: #D2542F;--primary-hover: #B8451F;--on-primary: #FFFFFF;
--secondary: #1F3A4D;--secondary-hover: #2C5064;
--bg: #F7F4EE;--surface: #FFFFFF;
--text: #1F3A4D;--text-secondary: #46606F;--text-strong: #12252F;
--text-muted: #6B7A85;--text-faint: #C3CCD2;
--fill: #EFEAE1;--border: #DCD5C9;--white: #FFFFFF;
--callout-bg: #FBF0EA;--callout-text: #8A3417;--callout-border: #E7C7B7;
/* Teintes dérivées du bleu de plan, pour les blocs sombres (footer, cartes en vedette). */
--on-dark: #C3CCD2;--on-dark-muted: #9FB0BB;--on-dark-line: #3A5566;
/* Alias historiques du front, remappés par RÔLE (le nom --serif porte ici la police de TITRE). */
--font-heading:'Archivo',Helvetica,Arial,sans-serif;
--font-body:'IBM Plex Serif',Georgia,serif;
--font-mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,monospace;
--blue:var(--secondary);--ink:var(--text-strong);--cyan:var(--text-faint);--paper:var(--bg);--line:var(--border);--muted:var(--text-muted);--orange:var(--primary);
--serif:var(--font-heading);--sans:var(--font-body);
--max:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--sans);font-size:16px;line-height:1.55}a{color:inherit;text-decoration:none}.site-header{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.header-inner{max-width:var(--max);min-height:80px;margin:auto;padding:0 24px;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;gap:9px;font-family:var(--serif);font-size:18px;line-height:.82;letter-spacing:-.5px;white-space:nowrap}.brand b{font-size:22px}.brand-mark{background:var(--blue);color:#fff;width:29px;height:37px;display:grid;place-items:center;font-family:Arial;font-size:29px;line-height:1;border-radius:2px;transform:rotate(180deg)}.main-nav{display:flex;gap:22px;margin-left:auto;font-size:14px;font-weight:600}.main-nav a:hover{color:var(--blue)}.header-tool{font-size:13px;font-weight:700;display:flex;align-items:center;gap:7px;background:var(--fill);padding:10px 13px;border-radius:4px}.header-tool svg{width:16px}.menu-toggle{display:none;background:none;border:0;color:var(--ink)}.hero{max-width:var(--max);margin:auto;padding:70px 24px 48px;display:grid;grid-template-columns:1.1fr .9fr;gap:55px;align-items:end}.eyebrow,.section-kicker{font-size:12px;text-transform:uppercase;letter-spacing:1.5px;font-weight:700;color:var(--blue);margin:0 0 18px}.hero h1{font-family:var(--serif);font-size:clamp(45px,6vw,78px);line-height:.97;letter-spacing:-3px;margin:0;max-width:700px}.hero h1 em{font-style:normal;color:var(--blue)}.hero-lede{font-size:19px;max-width:580px;margin:28px 0;color:var(--text-secondary)}.hero-stat{border-top:2px solid var(--ink);padding-top:16px;margin-top:45px;display:flex;gap:18px;align-items:flex-start}.big-number{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:48px;line-height:.85;color:var(--primary)}.hero-stat p{margin:0;font-size:13px;max-width:220px}.hero-image{position:relative;height:470px}.hero-image img{width:100%;height:100%;object-fit:cover;filter:saturate(.78);border-radius:3px}.image-stamp{position:absolute;bottom:-20px;left:-20px;background:var(--blue);color:var(--white);padding:21px;width:190px;font-family:var(--serif);font-size:20px;line-height:1.1}.ticker{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface);padding:14px 24px;display:flex;gap:28px;overflow:auto;white-space:nowrap;font-size:13px}.ticker strong{color:var(--blue)}.container{max-width:var(--max);padding:0 24px;margin:auto}.section{padding:88px 0}.section-heading{display:flex;justify-content:space-between;align-items:end;border-bottom:1px solid var(--ink);padding-bottom:18px;margin-bottom:26px}.section-heading h2{font-family:var(--serif);font-size:42px;letter-spacing:-1.5px;margin:0;line-height:1}.section-heading a{color:var(--blue);font-size:14px;font-weight:700}.decision-grid{display:grid;grid-template-columns:1.28fr .72fr .72fr;gap:20px}.story{background:var(--surface);border:1px solid var(--line);padding:25px;min-height:250px;display:flex;flex-direction:column;justify-content:space-between;transition:transform .25s,box-shadow .25s}.story:hover{transform:translateY(-4px);box-shadow:0 14px 25px rgba(31,58,77,.12)}.story.featured{background:var(--ink);color:var(--white)}.story .tag{color:var(--blue);font-size:11px;text-transform:uppercase;font-weight:700;letter-spacing:1px}.featured .tag{color:var(--cyan)}.story h3{font-family:var(--serif);font-size:28px;line-height:1.03;letter-spacing:-.7px;margin:16px 0}.story p{font-size:14px;margin:0;color:var(--muted)}.featured p{color:var(--on-dark)}.story-meta{border-top:1px solid currentColor;padding-top:12px;font-size:12px;opacity:.8}.tool-band{background:var(--blue);color:var(--white)}.tool-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:66px;align-items:center}.tool-intro h2{font-family:var(--serif);font-size:52px;line-height:.95;margin:0 0 18px;letter-spacing:-2px}.tool-intro p{color:var(--on-dark);max-width:400px}.calculator{background:var(--surface);color:var(--ink);padding:30px;border-radius:4px;box-shadow:10px 10px 0 rgba(31,58,77,.20)}.calculator h3{margin:0 0 20px;font-family:var(--serif);font-size:29px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field label{display:block;font-size:12px;font-weight:700;margin-bottom:5px}.field input,.field select{width:100%;padding:12px;border:1px solid var(--line);font:inherit;background:var(--surface);border-radius:2px}.result{margin-top:20px;background:var(--callout-bg);border:1px solid var(--callout-border);padding:16px;display:flex;justify-content:space-between;align-items:center}.result span{font-size:12px;font-weight:700}.result strong{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:26px;color:var(--primary)}.source-note{font-size:11px;color:var(--text-muted);margin:14px 0 0}.pillars{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.pillar{padding:22px 17px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:195px;background:var(--surface)}.pillar:hover{background:var(--fill)}.pillar-num{font-family:var(--serif);font-size:28px;color:var(--blue)}.pillar h3{font-family:var(--serif);font-size:23px;line-height:1;margin:15px 0 9px}.pillar p{font-size:12px;color:var(--muted);margin:0}.method{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}.method h2{font-family:var(--serif);font-size:48px;line-height:.97;letter-spacing:-1.5px;margin:0}.method-copy{border-left:2px solid var(--cyan);padding-left:25px}.method-copy p{font-size:18px;margin:0 0 18px}.method-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}.method-list div{border-top:2px solid var(--ink);padding-top:10px;font-size:13px}.method-list strong{display:block;font-size:20px;font-family:var(--serif)}.site-footer{background:var(--ink);color:var(--on-dark);padding:54px max(24px,calc((100% - var(--max))/2)) 22px}.footer-grid{display:grid;grid-template-columns:1.35fr .75fr .85fr 1.05fr;gap:42px}.footer-brand{color:#fff;margin-bottom:20px}.site-footer p{font-size:13px;max-width:350px;color:var(--on-dark-muted)}.site-footer a:not(.brand){display:block;font-size:13px;margin:7px 0}.footer-label{color:var(--white)!important;text-transform:uppercase;letter-spacing:1px;font-size:11px!important;font-weight:700}.footer-note{color:var(--white)!important}.site-footer a:not(.brand):hover{color:var(--white)}.footer-bottom{border-top:1px solid var(--on-dark-line);margin-top:38px;padding-top:15px;display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--on-dark-muted)}.not-found{min-height:60vh;max-width:800px;margin:auto;padding:130px 24px}.not-found h1{font-family:var(--serif);font-size:65px;line-height:1;margin:0}.button{display:inline-block;margin-top:20px;padding:12px 18px;font-size:14px;font-weight:700}.button-primary{background:var(--primary);color:var(--on-primary)}.button-primary:hover{background:var(--primary-hover)}.reveal-on-scroll{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}.revealed{opacity:1;transform:none}@media(max-width:850px){.header-inner{min-height:70px}.menu-toggle{display:block;margin-left:auto}.header-tool{display:none}.main-nav{display:none;position:absolute;top:70px;left:0;right:0;margin:0;background:var(--surface);padding:18px 24px;border-bottom:1px solid var(--line)}.main-nav.open{display:grid;gap:14px}.hero,.tool-layout,.method{grid-template-columns:1fr;gap:35px}.hero{padding-top:48px}.hero-image{height:320px;max-width:620px}.decision-grid{grid-template-columns:1fr 1fr}.story.featured{grid-column:span 2}.pillars{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:span 2}}@media(max-width:520px){.header-inner,.container,.hero{padding-left:18px;padding-right:18px}.hero h1{letter-spacing:-2px}.hero-image{height:280px}.image-stamp{left:0}.section{padding:58px 0}.section-heading h2{font-size:34px}.section-heading{align-items:flex-start;gap:13px;flex-direction:column}.decision-grid,.form-grid,.method-list{grid-template-columns:1fr}.story.featured{grid-column:auto}.tool-intro h2,.method h2{font-size:42px}.calculator{padding:20px}.pillars{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:25px}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin:7px 0}}
/* ===== BLOC OUTILS [05-tools] — tableaux de données et listes ordonnées ===== */
button.button{font-family:var(--font-heading);font-size:14px;font-weight:700;line-height:1.2}
.tool-table-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--surface)}
.tool-table{width:100%;min-width:640px;border-collapse:collapse;font-size:14px}
.tool-table th,.tool-table td{padding:13px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.tool-table thead th{font-family:var(--font-heading);font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);background:var(--fill);border-bottom:2px solid var(--secondary)}
.tool-table tbody th{font-weight:700;color:var(--text-strong)}
.tool-table td.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
.tool-table tr.total th,.tool-table tr.total td{background:var(--fill);font-weight:700;color:var(--text-strong)}
.tool-table tbody tr:last-child th,.tool-table tbody tr:last-child td{border-bottom:0}
.tool-table a{text-decoration:underline;text-underline-offset:3px}
.tool-list{counter-reset:flp-step;list-style:none;padding:0;margin:0;max-width:820px}
.tool-list li{counter-increment:flp-step;position:relative;padding:14px 0 14px 34px;border-bottom:1px solid var(--line);font-size:16px}
.tool-list li:last-child{border-bottom:0}
.tool-list li::before{content:counter(flp-step);position:absolute;left:0;top:15px;font-family:var(--font-mono);font-size:13px;font-weight:500;color:var(--primary)}
@media(max-width:520px){.tool-table{min-width:520px}.tool-table th,.tool-table td{padding:11px 12px}}

/* ===== BLOC PILIERS [06] — sommaire d'ancres et citation de mi-article ===== */
.toc{max-width:var(--max);margin:0 auto;padding:22px 24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface);display:flex;flex-wrap:wrap;align-items:baseline;gap:9px 22px}
.toc p{margin:0 8px 0 0;flex:0 0 auto}
.toc a{font-size:13px;font-weight:600;color:var(--secondary);border-bottom:1px solid var(--line);padding-bottom:2px}
.toc a:hover{color:var(--primary);border-bottom-color:var(--primary)}
.pull-quote{max-width:860px;margin:0 auto;padding:34px 24px 34px 30px;border-left:3px solid var(--primary);font-family:var(--font-heading);font-size:clamp(20px,2.4vw,27px);line-height:1.32;letter-spacing:-.4px;color:var(--text-strong);background:var(--callout-bg)}
.section + .pull-quote,.pull-quote + .section{margin-top:0}
@media(max-width:520px){.toc{padding:18px}.pull-quote{padding:24px 18px 24px 20px}}