/* Pierre-Eric Tessa — feuille de style commune (site statique, sans framework) */
:root{
  --bg:#0A0C0F; --surface:#111419; --surface-2:#161A20;
  --line:#1C2027; --line-2:#2E343D; --line-3:#3A404A;
  --text:#ECEEF1; --text-2:#C9CED6; --muted:#A0A7B2; --faint:#8A919C; --dim:#6B7380;
  --accent:#FFB547; --accent-hover:#FFD08A; --ok:#3DDC97;
  --sans:'Geist',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'Geist Mono',ui-monospace,'SFMono-Regular',Menlo,monospace;
  --gutter:96px; --radius:16px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--text)}
a:hover{color:var(--accent-hover)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
h1,h2,h3,p,ul,ol,figure,blockquote,dl,dd{margin:0}
.mono{font-family:var(--mono)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:10;background:var(--accent);color:var(--bg);padding:10px 14px;border-radius:8px}

/* Layout */
.wrap{max-width:1440px;margin:0 auto;padding:0 var(--gutter)}
.section{padding-top:160px}
.stack-16{display:flex;flex-direction:column;gap:16px}
.stack-20{display:flex;flex-direction:column;gap:20px}
.stack-28{display:flex;flex-direction:column;gap:28px}

/* Type */
.eyebrow{font-family:var(--mono);font-size:13px;color:var(--muted);display:flex;align-items:center;gap:10px}
.eyebrow--accent{color:var(--accent)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0}
.h1{font-weight:600;font-size:88px;line-height:.98;letter-spacing:-.045em;max-width:1100px}
.h1--page{font-size:72px;line-height:1}
.h1 .soft{color:var(--dim)}
.h2{font-weight:600;font-size:48px;line-height:1.04;letter-spacing:-.035em}
.h2--sm{font-size:44px;line-height:1.05}
.h3{font-weight:600;font-size:22px;letter-spacing:-.02em}
.lead{font-size:20px;line-height:1.55;color:var(--muted);max-width:620px}
.body{font-size:17px;line-height:1.6;color:var(--muted)}
.small{font-size:14px;color:var(--faint)}
.link-accent{color:var(--accent);text-decoration:none;font-weight:500;font-size:15px}
.link-accent:hover{color:var(--accent-hover)}

/* Buttons */
.btn{display:inline-block;text-decoration:none;font-weight:600;font-size:15px;padding:15px 24px;border-radius:8px;border:1px solid transparent;cursor:pointer;font-family:inherit;line-height:1.2;text-align:center}
.btn--primary{background:var(--accent);color:var(--bg)}
.btn--primary:hover{background:var(--accent-hover);color:var(--bg)}
.btn--ghost{border-color:var(--line-2);color:var(--text);font-weight:500}
.btn--ghost:hover{border-color:var(--faint);color:var(--text)}
.btns{display:flex;gap:12px;flex-wrap:wrap}

/* Header */
.site-header{border-bottom:1px solid var(--line)}
.site-header .wrap{height:80px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:600;font-size:16px;letter-spacing:-.01em}
.brand-mark{width:32px;height:32px;border-radius:8px;border:1px solid var(--line-2);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:12px;color:var(--accent)}
.nav{display:flex;align-items:center;gap:36px;font-size:14px}
.nav a{text-decoration:none;color:var(--muted)}
.nav a:hover,.nav a[aria-current="page"]{color:var(--text)}
.nav .nav-cta{color:var(--text);border:1px solid var(--line-2);padding:10px 18px;border-radius:8px;font-weight:500}

/* Hero */
.hero{padding-top:128px;display:flex;flex-direction:column;gap:40px}
.hero--page{padding-top:112px;gap:32px}
.hero-foot{display:flex;justify-content:space-between;align-items:flex-end;gap:64px}

/* Principle diagram */
.principle{margin-top:88px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:40px 48px 44px;display:flex;flex-direction:column;gap:28px}
.principle-head{display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:var(--mono);font-size:12px;color:var(--faint)}
.live{display:flex;align-items:center;gap:8px}
.live::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ok)}
.uptime{position:relative;height:24px;margin-left:128px}
.uptime::before{content:"";position:absolute;left:0;right:0;top:11px;height:2px;background:var(--ok)}
.uptime span{position:absolute;top:5px;width:14px;height:14px;margin-left:-7px;border-radius:50%;background:var(--surface);border:2px solid var(--ok)}
.lanes{display:grid;grid-template-columns:120px repeat(4,minmax(0,1fr));gap:8px;align-items:center;font-size:15px}
.lane-label,.step-note{font-family:var(--mono);font-size:12px;color:var(--faint)}
.ver{height:52px;border:1px solid var(--line-2);background:var(--surface-2);border-radius:8px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;color:var(--text-2)}
.ver--legacy{border-style:dashed;border-color:var(--line-3);background:transparent;color:var(--faint)}
.ver--current{border-color:var(--accent);color:var(--text);font-weight:500}
.ver--current small{font-family:var(--mono);font-size:11px;color:var(--accent);font-weight:400}

/* References strip */
.refs{margin-top:64px;display:flex;align-items:center;justify-content:space-between;gap:16px 24px;flex-wrap:wrap;font-size:17px;font-weight:500;color:var(--faint)}
.refs .mono{font-size:12px}

/* Stack row */
.stackrow{margin-top:28px;padding-top:28px;border-top:1px solid var(--line);display:flex;align-items:flex-start;gap:24px}
.stackrow .mono{font-size:12px;color:var(--faint);flex-shrink:0;padding-top:10px;width:128px}
.stackrow ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.stackrow li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);border:1px solid var(--line-2);background:var(--surface);border-radius:8px;padding:7px 12px}
.stackrow img{width:22px;height:22px;padding:3px;border-radius:50%;background:#E6E8EC;box-sizing:border-box}

/* Grids */
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;row-gap:48px}
.span-3{grid-column-end:span 3}.span-4{grid-column-end:span 4}.span-5{grid-column-end:span 5}.span-6{grid-column-end:span 6}.span-7{grid-column-end:span 7}.span-8{grid-column-end:span 8}.span-12{grid-column-end:span 12}
.start-6{grid-column-start:6}.start-7{grid-column-start:7}.start-10{grid-column-start:10}

/* Metrics */
.metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;align-self:start}
.metrics--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.metric{background:var(--bg);padding:36px 32px;display:flex;flex-direction:column;gap:10px}
.metrics--raised .metric{background:var(--surface)}
.metric strong{font-weight:600;font-size:48px;letter-spacing:-.04em;line-height:1}
.metric span{font-size:15px;color:var(--muted)}

/* Columns with separators */
.cols-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line)}
.cols-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line)}
.col{padding:36px 40px 0;display:flex;flex-direction:column;gap:16px;border-left:1px solid var(--line)}
.col:first-child{padding-left:0;border-left:0}
.col:last-child{padding-right:0}
.col .num{font-family:var(--mono);font-size:12px;color:var(--faint)}
.col p{font-size:16px;line-height:1.6;color:var(--muted)}
.cols-4 .col{padding-top:32px;gap:10px}
.cols-4 .col p{font-size:15px}

/* Timeline */
.legend{display:flex;gap:20px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.legend span{display:flex;align-items:center;gap:8px}
.legend i{width:12px;height:12px;border-radius:3px;background:var(--accent)}
.legend i.back{background:var(--text-2)}
.timeline{display:flex;flex-direction:column}
.tl-row{display:grid;grid-template-columns:260px minmax(0,1fr);gap:24px;align-items:center;min-height:64px;border-top:1px solid var(--line)}
.tl-row:last-of-type{border-bottom:1px solid var(--line)}
.tl-name{display:flex;flex-direction:column;gap:2px;padding:10px 0}
.tl-name strong{font-weight:500;font-size:15px}
.tl-name span{font-family:var(--mono);font-size:12px;color:var(--faint)}
.tl-track{position:relative;height:6px;background:var(--surface-2);border-radius:3px}
.tl-bar{position:absolute;top:0;bottom:0;border-radius:3px;background:var(--accent)}
.tl-bar.back{background:var(--text-2)}
.tl-axis{display:grid;grid-template-columns:260px minmax(0,1fr);gap:24px;padding-top:12px}
.tl-years{position:relative;height:16px;font-family:var(--mono);font-size:12px;color:var(--faint)}
.tl-years span{position:absolute;transform:translateX(-50%)}

/* About */
.photo{aspect-ratio:4/5;width:100%;height:auto;align-self:center;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);filter:grayscale(.15)}
.card-link{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:20px 24px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.card-link .mono{font-size:12px;color:var(--faint)}
.card-link strong{font-weight:500;font-size:16px}
.quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.quotes--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.quote{padding:28px;border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;gap:20px}
.quote blockquote{font-size:16px;line-height:1.6;color:var(--text-2)}
.quote figcaption{margin-top:auto;font-size:14px}
.quote figcaption span{color:var(--faint)}

/* Contact */
.contact{margin-top:160px;padding:72px;background:var(--surface);border:1px solid var(--line);border-radius:20px}
.contact-list{display:flex;flex-direction:column;gap:12px;font-size:16px}
.contact-list a{text-decoration:none}
.links{display:flex;gap:20px;flex-wrap:wrap;font-size:14px}
.links a{color:var(--muted)}
.form{display:flex;flex-direction:column;gap:18px}
.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:var(--muted)}
.field input,.field textarea{width:100%;border:1px solid var(--line-2);border-radius:8px;padding:12px 14px;font-size:15px;font-family:inherit;background:var(--bg);color:var(--text)}
.field input{height:46px}
.field textarea{resize:vertical;min-height:130px}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.form .btn{align-self:flex-start}
.form-note{font-size:13px;color:var(--faint)}
.form-status{font-size:14px;color:var(--ok);min-height:1em}

/* CTA band */
.cta{margin-top:144px;padding:56px 64px;background:var(--surface);border:1px solid var(--line);border-radius:20px;display:flex;align-items:center;justify-content:space-between;gap:48px}
.cta h2{font-weight:600;font-size:36px;letter-spacing:-.03em}
.cta p{font-size:17px;color:var(--muted);margin-top:10px}

/* Case study table */
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding-top:16px;font-size:15px}
.facts div{display:flex;flex-direction:column;gap:6px}
.facts dt{font-family:var(--mono);font-size:12px;color:var(--faint)}
.facts dd{margin:0}
.ct{display:flex;flex-direction:column}
.ct-head,.ct-row{display:grid;grid-template-columns:220px repeat(2,minmax(0,1fr));column-gap:48px}
.ct-head{padding-bottom:16px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:12px;color:var(--faint)}
.ct-row{padding:32px 0;border-bottom:1px solid var(--line);font-size:17px;line-height:1.6}
.ct-row h3{font-weight:600;font-size:20px;letter-spacing:-.02em;line-height:1.3}
.ct-row .before{color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-family:var(--mono);font-size:12px;color:var(--text-2);border:1px solid var(--line-2);border-radius:6px;padding:6px 10px}

/* Experience list */
.exp{display:grid;grid-template-columns:280px minmax(0,1fr);column-gap:64px;padding:56px 0;border-bottom:1px solid var(--line)}
.exp:last-child{border-bottom:0}
.exp-meta{display:flex;flex-direction:column;gap:8px}
.exp-meta time{font-family:var(--mono);font-size:13px;color:var(--faint)}
.exp-meta strong{font-weight:600;font-size:18px}
.exp-meta span{font-size:14px;color:var(--faint)}
.exp-body{display:flex;flex-direction:column;gap:18px}
.exp-body h2{font-weight:600;font-size:26px;letter-spacing:-.025em;line-height:1.25}
.exp-body ul{padding-left:20px;display:flex;flex-direction:column;gap:8px;font-size:16px;line-height:1.6;color:var(--muted)}
.page-head{padding-top:112px;padding-bottom:72px;display:flex;justify-content:space-between;align-items:flex-end;gap:64px;border-bottom:1px solid var(--line)}

/* PipeImmo */
.spec{display:flex;flex-direction:column;gap:14px;font-size:15px}
.spec div{display:flex;justify-content:space-between;gap:16px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.spec div:last-child{border-bottom:0;padding-bottom:0}
.spec dt{color:var(--faint)}
.spec dd{margin:0;text-align:right}
.kanban{margin-top:80px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;gap:20px}
.kanban-cols{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.kanban-col{display:flex;flex-direction:column;gap:10px}
.kanban-col b{font-size:13px;font-weight:600;color:var(--text-2)}
.kcard{height:72px;border:1px solid var(--line-2);border-radius:8px;background:var(--surface-2)}
.kcard--alert{border-color:var(--accent);display:flex;align-items:flex-end;padding:10px}
.kcard--alert small{font-family:var(--mono);font-size:11px;color:var(--accent)}
.features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.feature{background:var(--bg);padding:28px;display:flex;flex-direction:column;gap:8px}
.feature strong{font-weight:600;font-size:17px}
.feature span{font-size:15px;line-height:1.55;color:var(--muted)}
.layers{display:flex;flex-direction:column;gap:8px;font-size:15px}
.layer{border:1px solid var(--line-2);border-radius:10px;padding:18px 22px;display:grid;grid-template-columns:150px minmax(0,1fr);gap:16px;background:var(--surface)}
.layer strong{font-weight:600}
.layer span{color:var(--muted)}
.layer--core{border-color:var(--accent)}
.layer--core span{color:var(--text-2)}
.layer--ops{border-style:dashed;border-color:var(--line-3);background:transparent}
.layer-link{font-family:var(--mono);font-size:11px;color:var(--faint);padding-left:22px}
.flow{list-style:none;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;font-size:15px;line-height:1.5}
.flow li{border-top:2px solid var(--line-2);padding-top:16px;display:flex;flex-direction:column;gap:6px}
.flow li.key{border-top-color:var(--accent)}
.flow li small{font-family:var(--mono);font-size:12px;color:var(--faint)}
.flow-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap}
.flow-head .mono{font-size:12px;color:var(--faint)}

/* Footer */
.site-footer{margin-top:160px;border-top:1px solid var(--line)}
.site-footer .wrap{padding-top:32px;padding-bottom:32px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--faint)}
.site-footer a{color:var(--faint)}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  :root{--gutter:48px}
  .h1{font-size:68px}
  .h1--page{font-size:58px}
  .hero-foot{flex-direction:column;align-items:flex-start;gap:32px}
  .metrics--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .facts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cols-4 .col:nth-child(3){padding-left:0;border-left:0}
  .nav{gap:24px}
}
@media (max-width:900px){
  .grid-12>*{grid-column:1/-1}
  .quotes{grid-template-columns:1fr}
  .features{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cols-3{grid-template-columns:1fr}
  .cols-3 .col{padding:28px 0;border-left:0;border-bottom:1px solid var(--line)}
  .ct-head{display:none}
  .ct-row{grid-template-columns:1fr;row-gap:10px}
  .exp{grid-template-columns:1fr;row-gap:16px}
  .page-head{flex-direction:column;align-items:flex-start;gap:32px}
  .flow{grid-template-columns:1fr 1fr}
  .kanban-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .kanban-col:nth-child(n+4){display:none}
  .cta{flex-direction:column;align-items:flex-start}
  .photo{max-width:420px}
}
@media (max-width:760px){
  :root{--gutter:16px}
  .section{padding-top:96px}
  .site-header .wrap{height:64px}
  .nav a:not(.nav-cta){display:none}
  .hero{padding-top:56px;gap:24px}
  .hero--page{padding-top:56px}
  .h1{font-size:42px;letter-spacing:-.04em}
  .h1--page{font-size:38px}
  .h2,.h2--sm{font-size:32px}
  .lead{font-size:17px}
  .btns .btn{flex:1 1 100%}
  .principle{margin-top:48px;padding:20px}
  .uptime{margin-left:0}
  .lanes{grid-template-columns:repeat(4,minmax(0,1fr));font-size:12px}
  .lanes .lane-label,.lanes .spacer{display:none}
  .ver{height:auto;padding:10px 8px;justify-content:center;text-align:center}
  .ver--current small,.step-note{display:none}
  .refs{margin-top:40px;justify-content:flex-start;font-size:15px}
  .refs .mono{flex-basis:100%}
  .stackrow{flex-direction:column;align-items:flex-start;gap:14px}
  .stackrow .mono{padding-top:0;width:auto}
  .stackrow li{font-size:13px;padding:6px 10px}
  .metrics,.metrics--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric{padding:20px 16px}
  .metric strong{font-size:28px}
  .metric span{font-size:13px}
  .tl-row,.tl-axis{grid-template-columns:1fr;gap:6px}
  .tl-row{padding:12px 0}
  .tl-name{padding:0}
  .tl-axis>div:first-child{display:none}
  .tl-years span:nth-child(even){display:none}
  .contact{margin-top:96px;padding:28px 20px}
  .form-row{grid-template-columns:1fr}
  .form .btn{align-self:stretch}
  .cta{margin-top:96px;padding:28px 20px}
  .cta h2{font-size:28px}
  .facts{grid-template-columns:1fr}
  .cols-4{grid-template-columns:1fr}
  .cols-4 .col{padding:24px 0;border-left:0;border-bottom:1px solid var(--line)}
  .exp{padding:40px 0}
  .exp-body h2{font-size:21px}
  .page-head{padding-top:56px;padding-bottom:48px}
  .features{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .layer{grid-template-columns:1fr;gap:4px}
  .kanban{margin-top:48px;padding:16px}
  .spec dd{text-align:right}
  .site-footer{margin-top:96px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}