/* =========================================================
   Eya Ben Salem — Portfolio
   v3 — Refonte éditoriale (encre / papier / cobalt, zéro dégradé)
   ========================================================= */
:root{
  --paper:#F4F2EC;
  --paper-2:#ECE9DF;
  --card:#FBFAF6;
  --ink:#15171C;
  --ink-2:#34373F;
  --muted:#6B6E78;
  --faint:#9A9C9F;
  --line:#DCD7CB;
  --line-2:#E7E3D8;
  --accent:#2347E0;        /* cobalt — usage parcimonieux */
  --accent-ink:#1B39B8;
  --accent-wash:#E7EAFB;
  --ok:#1F8A4C;
  --maxw:1180px;
  --gut:clamp(20px,5vw,72px);
  --r:10px;
  --r-sm:7px;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --disp:'Space Grotesk','Inter',system-ui,sans-serif;
  --body:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{
  font-family:var(--body);color:var(--ink);background:var(--paper);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  font-size:16px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}

h1,h2,h3{font-family:var(--disp);font-weight:600;line-height:1.04;letter-spacing:-.02em}

/* mono eyebrow / labels */
.mono{font-family:var(--mono)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);
  font-size:12px;font-weight:500;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--ink);opacity:.5}
.eyebrow.accent{color:var(--accent)}
.eyebrow.accent::before{background:var(--accent);opacity:1}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  background:var(--accent);color:#fff;font-weight:600;font-size:14.5px;
  font-family:var(--body);
  padding:13px 22px;border-radius:var(--r-sm);border:1px solid var(--accent);
  white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .18s ease;cursor:pointer;
}
.btn:hover{background:var(--accent-ink);border-color:var(--accent-ink);color:#fff;transform:translateY(-1px)}
.btn svg{width:16px;height:16px;flex:none}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:transparent;color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}
.btn-sm{padding:8px 15px;font-size:13.5px}

/* ---- Nav ---- */
.nav{
  position:sticky;top:0;z-index:50;background:rgba(244,242,236,.85);
  backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid transparent;transition:border-color .25s;
}
.nav.scrolled{border-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;flex-direction:column;line-height:1.1}
.brand b{font-family:var(--disp);font-weight:600;font-size:16.5px;letter-spacing:-.01em}
.brand small{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links>a{padding:8px 12px;font-size:14px;font-weight:500;color:var(--ink-2);border-radius:6px;transition:color .15s,background .15s}
.nav-links>a:hover{color:var(--accent)}
.nav-links a.btn{color:var(--paper)}
.nav-links a.btn:hover{color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:8px;cursor:pointer}
.nav-toggle span{width:23px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* lang switch */
.lang-switch{display:inline-flex;align-items:center;gap:2px;margin-left:6px;padding:2px;border:1px solid var(--line);border-radius:7px}
.lang-switch .lang-opt{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border-radius:5px;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--muted);cursor:pointer}
.lang-switch a.lang-opt:hover{color:var(--accent)}
.lang-switch .lang-opt.active{background:var(--ink);color:var(--paper);cursor:default}
.lang-switch .flag{width:17px;height:12px;flex:none;border-radius:2px;display:block;box-shadow:0 0 0 1px rgba(20,22,40,.1)}

/* ---- Hero ---- */
.hero{padding:clamp(40px,7vw,84px) 0 clamp(34px,5vw,60px);position:relative}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,64px);align-items:center}
.hero-text .eyebrow{margin-bottom:24px}
.hero-text h1{font-size:clamp(46px,8.2vw,92px);font-weight:700;letter-spacing:-.04em;line-height:.95}
.hero-role{font-family:var(--disp);font-size:clamp(17px,2.2vw,22px);font-weight:500;color:var(--ink-2);margin-top:18px}
.hero-role b{color:var(--accent);font-weight:600}
.hero-tag{font-size:18px;color:var(--ink-2);margin-top:22px;max-width:33em;line-height:1.65}
.hero-tag strong{color:var(--ink);font-weight:600}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.cv-alt{margin-top:14px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.cv-alt a{color:var(--muted);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.cv-alt a:hover{color:var(--accent)}

/* available flat tag */
.avail{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.04em;color:var(--ink);border:1px solid var(--line);background:var(--card);padding:7px 13px;border-radius:30px}
.avail .dot{width:7px;height:7px;border-radius:50%;background:var(--ok)}

/* hero visual */
.hero-visual{position:relative}
.visual-frame{position:relative;border:1px solid var(--ink);border-radius:var(--r);overflow:hidden;background:var(--paper-2)}
.visual-frame::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.4)}
.visual-frame img{width:100%;height:auto;display:block;mix-blend-mode:multiply}
.visual-offset{position:absolute;inset:14px -14px -14px 14px;border:1px solid var(--accent);border-radius:var(--r);z-index:-1}
.visual-cap{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.visual-cap .num{color:var(--accent)}

/* ---- Metrics row ---- */
.metrics{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--card)}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:32px var(--gut);border-left:1px solid var(--line)}
.metric:first-child{border-left:none}
.metric .m-num{font-family:var(--disp);font-size:clamp(34px,4vw,48px);font-weight:700;letter-spacing:-.03em;line-height:1;color:var(--accent)}
.metric .m-num em{font-style:normal}
.metric .m-lab{display:block;margin-top:10px;font-size:13.5px;color:var(--muted);line-height:1.45;max-width:16em}
.metrics-grid .metric{padding-left:clamp(20px,3vw,40px);padding-right:clamp(20px,3vw,40px)}

/* ---- Logo wall ---- */
.logos{padding:46px 0}
.logos-head{font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);text-align:center;margin-bottom:26px}
.logos-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:18px}
.logo-tile{
  display:flex;align-items:center;justify-content:center;height:96px;flex:1 1 0;min-width:170px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px 28px;
  transition:border-color .2s,transform .2s;
}
.logo-tile:hover{border-color:var(--ink);transform:translateY(-2px)}
.logo-tile img{max-height:100%;max-width:100%;width:auto;object-fit:contain;
  opacity:.92;transition:opacity .25s,transform .25s}
.logo-tile:hover img{opacity:1}
.logo-tile.tz img{opacity:.85}
.logo-tile.tz:hover img{opacity:1}

/* ---- Sections ---- */
.section{padding:clamp(64px,8vw,108px) 0}
.section-alt{background:var(--paper-2)}
.section-head{display:grid;grid-template-columns:auto 1fr;gap:14px 36px;align-items:end;margin-bottom:clamp(38px,5vw,58px);border-bottom:1px solid var(--line);padding-bottom:24px}
.section-head .sh-no{font-family:var(--mono);font-size:13px;color:var(--accent);font-weight:500;letter-spacing:.05em}
.section-head h2{font-size:clamp(30px,4.4vw,52px);letter-spacing:-.03em;grid-column:1 / -1}
.section-head .sh-sub{grid-column:1 / -1;font-size:16.5px;color:var(--muted);max-width:42em;margin-top:-6px}

/* ---- À propos ---- */
.about-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(36px,5vw,72px);align-items:start}
.about-lead{font-family:var(--disp);font-size:clamp(20px,2.4vw,27px);font-weight:400;line-height:1.4;letter-spacing:-.01em;color:var(--ink)}
.about-lead strong{font-weight:600}
.about-body{margin-top:22px}
.about-body p{font-size:16.5px;color:var(--ink-2);margin-bottom:14px;max-width:42em}
.about-body em{font-style:normal;color:var(--accent);font-weight:500}
.facts{border-top:1px solid var(--line)}
.fact{display:grid;grid-template-columns:1fr 1.3fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.fact dt{font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding-top:3px}
.fact dd{font-size:15.5px;font-weight:500;color:var(--ink)}
.fact dd b{font-family:var(--disp);font-size:19px;font-weight:600}

/* ---- Compétences ---- */
.skills-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.skill-card{background:var(--card);padding:26px 26px 28px;transition:background .2s}
.skill-card:hover{background:#fff}
.skill-card .sk-top{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.skill-card .sk-no{font-family:var(--mono);font-size:11.5px;color:var(--faint)}
.skill-card h3{font-size:17px;font-weight:600;letter-spacing:-.01em}
.skill-card .sk-line{flex:1;height:1px;background:var(--line)}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:7px}
.chips li{font-family:var(--mono);font-size:12px;font-weight:400;color:var(--ink-2);background:transparent;border:1px solid var(--line);padding:5px 10px;border-radius:5px;transition:border-color .15s,color .15s}
.skill-card:hover .chips li{border-color:var(--line-2)}
.chips.small li{font-size:11px;padding:3px 8px}

/* ---- Parcours / Timeline ---- */
.timeline{display:flex;flex-direction:column}
.tl-item{display:grid;grid-template-columns:160px 1fr;gap:clamp(16px,3vw,44px);padding:28px 0;border-top:1px solid var(--line)}
.tl-item:last-child{border-bottom:1px solid var(--line)}
.tl-when{font-family:var(--mono);font-size:12.5px;color:var(--muted);line-height:1.7}
.tl-when .tl-tag{display:inline-block;margin-top:8px;font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);border:1px solid var(--accent-wash);background:var(--accent-wash);padding:3px 8px;border-radius:5px}
.tl-when .tl-tag.edu{color:var(--muted);background:transparent;border-color:var(--line)}
.tl-main h3{font-size:20px;font-weight:600;letter-spacing:-.01em}
.tl-main h3 .tl-co{color:var(--accent);font-weight:500}
.tl-main p{font-size:15.5px;color:var(--ink-2);margin:9px 0 13px;max-width:54em}
.tl-loc{font-family:var(--mono);font-size:11.5px;color:var(--faint);display:block;margin-top:2px}

/* ---- Projets ---- */
.projects-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.proj-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:border-color .2s,transform .2s}
.proj-card:hover{border-color:var(--ink);transform:translateY(-3px)}
.proj-shots{display:flex;flex-direction:column;gap:1px;background:var(--line);border-bottom:1px solid var(--line)}
.proj-shots .row{display:flex;gap:1px}
.shot{position:relative;display:block;overflow:hidden;background:var(--paper);cursor:zoom-in}
.shot.cover{aspect-ratio:16/9}
.shot.cover img{width:100%;height:100%;object-fit:contain;display:block;transition:transform .35s ease;padding:6px}
.shot.thumb{flex:1;height:74px}
.shot.thumb img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .35s ease}
.shot:hover img{transform:scale(1.03)}
.shot::after{content:"⤢";position:absolute;right:8px;bottom:8px;font-size:12px;color:var(--paper);background:rgba(21,23,28,.8);width:24px;height:24px;display:grid;place-items:center;border-radius:5px;opacity:0;transition:opacity .2s}
.shot:hover::after{opacity:1}
.proj-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.proj-top{display:flex;align-items:baseline;gap:10px;margin-bottom:8px}
.proj-no{font-family:var(--mono);font-size:12px;color:var(--accent);font-weight:500}
.proj-top h3{font-size:18.5px;font-weight:600;letter-spacing:-.01em;flex:1;line-height:1.2}
.proj-cat{font-family:var(--mono);font-size:10px;font-weight:500;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
.proj-body>p{font-size:14.5px;color:var(--ink-2);margin-bottom:16px;min-height:62px;line-height:1.55}
.pipeline{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:18px}
.pstep{font-family:var(--mono);font-size:11px;font-weight:400;color:var(--ink-2);border:1px solid var(--line);padding:4px 8px;border-radius:5px;white-space:nowrap}
.pipeline .arr{color:var(--faint);font-family:var(--mono);font-size:12px}
.proj-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:14px;border-top:1px solid var(--line)}
.proj-stack{font-family:var(--mono);font-size:11px;color:var(--faint)}
.proj-link{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--accent);white-space:nowrap}
.proj-link:hover{text-decoration:underline;text-underline-offset:3px}
.proj-link.muted{color:var(--faint);cursor:default;font-weight:500;font-family:var(--mono);font-size:11.5px}
.proj-link.muted:hover{text-decoration:none}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;background:rgba(18,19,24,.92);backdrop-filter:blur(3px);padding:30px}
.lightbox.open{display:flex}
.lightbox img{max-width:92vw;max-height:82vh;border-radius:8px;background:#fff;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.lb-cap{position:absolute;bottom:22px;left:0;right:0;text-align:center;color:#e7e8f4;font-family:var(--mono);font-size:12px;letter-spacing:.04em}
.lb-btn{position:absolute;background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff;width:44px;height:44px;border-radius:50%;font-size:20px;cursor:pointer;display:grid;place-items:center;transition:background .2s}
.lb-btn:hover{background:rgba(255,255,255,.14)}
.lb-close{top:20px;right:20px}
.lb-prev{left:20px;top:50%;transform:translateY(-50%)}
.lb-next{right:20px;top:50%;transform:translateY(-50%)}
@media (max-width:720px){.lb-prev{left:8px}.lb-next{right:8px}.lb-btn{width:38px;height:38px;font-size:17px}}

/* ---- Services ---- */
.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.svc-card{background:var(--card);padding:34px 32px;transition:background .2s}
.svc-card:hover{background:#fff}
.svc-no{font-family:var(--mono);font-size:12px;color:var(--accent);font-weight:500}
.svc-card h3{font-size:21px;font-weight:600;letter-spacing:-.01em;margin:14px 0 10px}
.svc-card p{font-size:15.5px;color:var(--ink-2);line-height:1.6;max-width:36em}

/* ---- Contact ---- */
.contact{padding:clamp(60px,8vw,104px) 0}
.contact-panel{background:#172150;color:var(--paper);border-radius:var(--r);padding:clamp(40px,6vw,76px)}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(32px,5vw,64px);align-items:end}
.contact-panel .eyebrow{color:#aab3df}
.contact-panel .eyebrow::before{background:#aab3df;opacity:.7}
.contact-panel h2{font-size:clamp(32px,4.6vw,58px);color:var(--paper);letter-spacing:-.03em;margin-top:20px;line-height:1}
.contact-panel .c-sub{font-size:17px;color:#cccfee;margin-top:20px;max-width:30em;line-height:1.6}
.contact-side{display:flex;flex-direction:column;gap:2px}
.c-mail{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-sm);padding:16px 18px;margin-bottom:10px}
.c-mail .c-k{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:#9aa4d6;display:block;margin-bottom:9px}
.c-mail-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.c-mail-addr{font-size:clamp(13.5px,2.6vw,15.5px);font-weight:600;color:#fff;letter-spacing:-.02em;overflow-wrap:break-word;flex:1;min-width:0}
.c-mail-addr:hover{color:#aab8ff}
.c-copy{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:12px;font-weight:500;color:#fff;background:var(--accent);border:1px solid var(--accent);border-radius:6px;padding:8px 13px;cursor:pointer;white-space:nowrap;transition:background .15s,transform .15s,border-color .15s}
.c-copy:hover{background:var(--accent-ink);border-color:var(--accent-ink);transform:translateY(-1px)}
.c-copy svg{width:14px;height:14px;flex:none}
.c-copy.copied{background:var(--ok);border-color:var(--ok)}
.c-row{display:flex;align-items:center;gap:14px;padding:16px 2px;border-top:1px solid rgba(255,255,255,.14);transition:color .18s}
.c-row:last-child{border-bottom:1px solid rgba(255,255,255,.14)}
.c-row:hover{color:#fff}
.c-row svg{width:18px;height:18px;flex:none;color:#9aa4d6;transition:color .18s}
.c-row:hover svg{color:#fff}
.c-row .c-k{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:#9aa4d6;display:block}
.c-row .c-v{font-size:15px;font-weight:500;color:var(--paper);word-break:break-word}
.contact-foot{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px;font-family:var(--mono);font-size:12px;color:#9aa4d6;align-items:center}
.contact-foot .av{display:inline-flex;align-items:center;gap:8px;color:var(--paper)}
.contact-foot .av .dot{width:7px;height:7px;border-radius:50%;background:var(--ok)}

/* ---- Footer ---- */
.footer{border-top:1px solid var(--line);padding:26px 0}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;color:var(--muted)}
.footer a:hover{color:var(--accent)}

/* ---- Reveal ---- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---- Responsive ---- */
@media (max-width:920px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1;max-width:460px}
  .about-grid{grid-template-columns:1fr;gap:36px}
  .skills-grid{grid-template-columns:repeat(2,1fr)}
  .services-grid{grid-template-columns:1fr}
  .projects-grid{grid-template-columns:1fr}
  .metrics-grid{grid-template-columns:1fr 1fr}
  .metric:nth-child(3){border-left:none}
  .metric:nth-child(odd){border-left:none}
  .metric:nth-child(n+3){border-top:1px solid var(--line)}
  .contact-grid{grid-template-columns:1fr;gap:34px;align-items:start}
}
@media (max-width:720px){
  .nav-links{position:fixed;inset:64px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);padding:10px var(--gut) 20px;
    transform:translateY(-130%);transition:transform .3s ease}
  .nav-links.open{transform:translateY(0)}
  .nav-links>a{padding:13px 4px;font-size:16px}
  .nav-links a.btn{margin-top:8px;text-align:center}
  .lang-switch,.theme-switch{align-self:flex-start;margin:8px 0 0}
  .nav-links a.btn.nav-cv{margin-left:0}
  .nav-toggle{display:flex}
  .tl-item{grid-template-columns:1fr;gap:10px}
  .skills-grid{grid-template-columns:1fr}
  .logo-tile{flex:1 1 40%;min-width:120px;height:80px;padding:16px}
}
@media (max-width:430px){
  .metrics-grid{grid-template-columns:1fr}
  .metric{border-left:none!important;border-top:1px solid var(--line)}
  .metric:first-child{border-top:none}
}
/* ---- Theme switcher (nav) ---- */
.theme-switch{display:inline-flex;align-items:center;gap:6px;margin-left:10px;padding:5px 8px;border:1px solid var(--line);border-radius:8px}
.th-opt{width:17px;height:17px;border-radius:50%;border:2px solid transparent;cursor:pointer;padding:0;outline:none;transition:transform .15s,border-color .15s;box-shadow:inset 0 0 0 1px rgba(0,0,0,.1)}
.th-opt:hover{transform:scale(1.15)}
.th-opt.on{border-color:var(--ink)}
.th-opt:focus-visible{border-color:var(--accent)}
.nav-links a.btn.nav-cv{margin-left:12px}

/* ---- Version switcher ---- */
.ver-switch{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;align-items:center;gap:3px;
  background:var(--card);border:1px solid var(--line);border-radius:30px;padding:5px 6px;
  box-shadow:0 8px 26px rgba(20,20,30,.14);font-family:var(--mono)}
.ver-switch .vs-lab{font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding:0 7px}
.ver-switch a{width:30px;height:30px;display:grid;place-items:center;border-radius:50%;font-size:12.5px;font-weight:600;color:var(--ink-2);text-decoration:none;transition:background .15s,color .15s}
.ver-switch a:hover{background:var(--paper-2);color:var(--ink)}
.ver-switch a.on{background:var(--accent);color:#fff}
@media (max-width:600px){.ver-switch{right:10px;bottom:10px}.ver-switch .vs-lab{display:none}}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}