:root{
  --green:#80CC28; --green-deep:#5E9A1B;
  --stone-900:#2E2C2D; --stone-700:#4F4C4D; --stone-400:#A7A5A6; --stone-200:#DDDCDA; --stone-100:#F2F3EF;
  --bg:#FFFFFF; --bg-alt:var(--stone-100); --fg:var(--stone-900); --fg-muted:var(--stone-700); --line:var(--stone-200);
  --logo-dark:#4F4C4D; --logo-grey:#A7A5A6;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"Source Sans 3","Helvetica Neue",Arial,sans-serif;
  --measure:38rem;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#1E1D1D; --bg-alt:#262525; --fg:#EDECE9; --fg-muted:#C9C7C4; --line:#3B3939;
    --logo-dark:#EDECE9; --logo-grey:#B8B6B3; --green-deep:#9BDB4A;
  }
}
:root[data-theme="dark"]{
  --bg:#1E1D1D; --bg-alt:#262525; --fg:#EDECE9; --fg-muted:#C9C7C4; --line:#3B3939;
  --logo-dark:#EDECE9; --logo-grey:#B8B6B3; --green-deep:#9BDB4A;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5rem}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:1.0625rem;line-height:1.55}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.15;margin:0 0 .6em}
h1{font-size:clamp(2.2rem,5vw,3.6rem);letter-spacing:-.01em}
h2{font-size:clamp(1.6rem,3vw,2.2rem)}
h3{font-size:1.2rem}
p{margin:0 0 1em;max-width:var(--measure)}
a{color:var(--green-deep);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--fg)}
:focus-visible{outline:2px solid var(--green);outline-offset:3px}
img,svg{max-width:100%}
.wrap{width:min(100% - 2.5rem,68rem);margin-inline:auto}

/* language switch */
[lang-it],[lang-en]{display:none}
html[data-lang="it"] [lang-it]{display:revert}
html[data-lang="en"] [lang-en]{display:revert}

/* logo */
.logo{height:66px;width:auto;display:block}
@media (max-width:820px){.logo{height:52px}}
.logo .lg{fill:var(--logo-grey)} .logo .lgr{fill:var(--green)} .logo .ld{fill:var(--logo-dark)} .logo .lw{fill:var(--bg)} .logo .k{fill:var(--fg)} .logo .w{fill:var(--bg)}

/* header */
header{position:sticky;top:0;z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:1.5rem;padding:.75rem 0}
.bar .brand{margin-right:auto;display:flex;align-items:center;gap:.9rem;text-decoration:none;color:inherit}
.brand .name{font-family:var(--serif);font-size:1.15rem;line-height:1.15;color:var(--fg);padding-left:.9rem;border-left:1px solid var(--line)}
nav ul{list-style:none;margin:0;padding:0;display:flex;gap:1.4rem}
nav a{color:var(--fg);text-decoration:none;font-weight:600;font-size:.95rem;white-space:nowrap}
nav a:hover{color:var(--green-deep)}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-size:.85rem}
.lang button{background:none;border:0;padding:.35rem .8rem;color:var(--fg-muted);cursor:pointer;font:inherit;font-weight:600}
.lang button[aria-pressed="true"]{background:var(--green);color:#1E2A0E}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:6px;padding:.4rem .6rem;color:var(--fg);cursor:pointer;font:inherit}
@media (max-width:1100px){.brand .name{display:none}}
@media (max-width:820px){
  .menu-btn{display:inline-block}
  nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--bg);border-bottom:1px solid var(--line)}
  nav.open{display:block}
  nav ul{flex-direction:column;gap:0;padding:.5rem 1.25rem 1rem}
  nav li a{display:block;padding:.6rem 0;border-top:1px solid var(--line)}
}

/* hero */
.hero{padding:4rem 0 0;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:2rem 3rem;align-items:center}
.hero p{font-size:1.2rem;color:var(--fg-muted)}
.hero .copy{padding-bottom:3rem}
.hero .art{position:relative;align-self:end;min-height:22rem}
.mark{position:absolute;right:-6%;bottom:-2px;width:118%;max-width:none;height:auto}
.mark .lg{fill:var(--logo-grey)} .mark .lgr{fill:var(--green)} .mark .ld{fill:var(--logo-dark)} .mark .lw{fill:var(--bg)}
.hero .facts{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;font-family:var(--serif);border-top:6px solid;border-image:linear-gradient(90deg,var(--green) 0 22%,var(--stone-700) 22% 60%,var(--stone-400) 60%) 1;padding:1.5rem 0 2.5rem}
.facts b{display:block;font-size:2rem;font-weight:600;color:var(--green-deep)}
.facts span{font-family:var(--sans);font-size:.95rem;color:var(--fg-muted)}
@media (max-width:820px){
  .hero{padding:2.5rem 0 0}
  .hero .wrap{grid-template-columns:1fr;gap:0}
  .hero .copy{padding-bottom:1rem}
  .hero .art{min-height:12rem;height:14rem}
  .mark{right:-8%;width:80%;bottom:-2px}
  .hero .facts{grid-template-columns:1fr 1fr;gap:1rem}
}
/* sections */
section{padding:4.5rem 0;border-bottom:1px solid var(--line)}
section.alt{background:var(--bg-alt)}
.two{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.4fr);gap:3rem}
@media (max-width:820px){.two{grid-template-columns:1fr;gap:1.5rem}}
.lede{font-size:1.15rem}
ul.plain{list-style:none;padding:0;margin:0 0 1em}
ul.plain li{padding:.45rem 0;border-top:1px solid var(--line);max-width:var(--measure)}
ul.plain li:last-child{border-bottom:1px solid var(--line)}

/* organigramma */
.org{display:grid;grid-template-columns:repeat(auto-fill,minmax(15rem,1fr));gap:1rem 2rem}
.org .person{padding:.9rem 0;border-top:2px solid var(--line)}
.org .person.lead{border-top-color:var(--green)}
.person b{display:block;font-family:var(--serif);font-size:1.15rem}
.person i{font-style:normal;color:var(--fg-muted);display:block;font-size:.95rem}
.person small{color:var(--fg-muted);display:block;margin-top:.2rem}

/* progetti */
.projects{display:grid;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:2rem}
.project{display:block;text-decoration:none;color:inherit;padding-top:1rem;border-top:3px solid var(--green)}
.project h3{margin-bottom:.3rem}
.project p{color:var(--fg-muted);margin-bottom:.4rem}
.project span{color:var(--green-deep);font-weight:600}
.project:hover span{text-decoration:underline}

/* unesco */
.emblem{display:flex;align-items:center;gap:1.5rem;flex-wrap:wrap;margin-top:1.5rem}
.emblem .unesco{width:min(240px,100%);height:auto;display:block}
.unesco .k{fill:var(--fg)} .unesco .w{fill:var(--bg-alt)}

/* contatti */
address{font-style:normal;line-height:1.7}
dl{display:grid;grid-template-columns:max-content 1fr;gap:.35rem 1.5rem;margin:0}
dt{color:var(--fg-muted)} dd{margin:0}

/* privacy */
details{max-width:var(--measure)}
summary{cursor:pointer;font-weight:600;padding:.5rem 0}
.privacy h3{margin-top:1.4em}

footer{padding:2.5rem 0;color:var(--fg-muted);font-size:.9rem}
footer .row{display:flex;flex-wrap:wrap;gap:1rem 2rem;justify-content:space-between;align-items:center}
footer a{color:inherit}

/* tappe */
.tappe{grid-column:1/-1;min-width:0;border-top:6px solid;border-image:linear-gradient(90deg,var(--green) 0 22%,var(--stone-700) 22% 60%,var(--stone-400) 60%) 1;padding:1.6rem 0 2.6rem;--c-r:var(--green);--c-i:var(--stone-700);--c-p:var(--stone-400)}
.tappe-head{display:flex;align-items:center;gap:1rem 2rem;flex-wrap:wrap}
.tappe-head h2{font-size:1.35rem;margin:0}
.legend{list-style:none;margin:0 auto 0 0;padding:0;display:flex;gap:1.2rem;flex-wrap:wrap;font-size:.88rem;color:var(--fg-muted)}
.legend li{display:flex;align-items:center;gap:.45rem}
.legend li::before{content:"";width:.75rem;height:.75rem;border-radius:50%;background:var(--c)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .tappe{--c-i:#8C8A8B;--c-p:#CFCDCA}}
:root[data-theme="dark"] .tappe{--c-i:#8C8A8B;--c-p:#CFCDCA}
.c-r{--c:var(--c-r)} .c-i{--c:var(--c-i)} .c-p{--c:var(--c-p)}
.tappe-nav{display:flex;gap:.4rem}
.tappe-nav button{width:2.2rem;height:2.2rem;border-radius:50%;border:1px solid var(--line);background:var(--bg);color:var(--fg);font-size:1.3rem;line-height:1;cursor:pointer}
.tappe-nav button:hover{border-color:var(--green)}
.axis{position:relative;height:132px;margin:1.2rem 0 .4rem}
.axis::before{content:"";position:absolute;left:0;right:0;bottom:24px;height:10px;border-radius:5px;
  background:repeating-linear-gradient(90deg,var(--line) 0 3px,transparent 3px 9px),linear-gradient(90deg,var(--bg-alt),var(--line));opacity:.9}
.century{position:absolute;left:var(--a);width:calc(var(--b) - var(--a));top:0;height:30px;border:1.5px dashed var(--green-deep);border-bottom:0;border-radius:50% 50% 0 0 / 100% 100% 0 0}
.century span{position:absolute;left:50%;top:-.75rem;transform:translateX(-50%);background:var(--bg);padding:0 .5rem;font-size:.8rem;font-weight:600;color:var(--green-deep);white-space:nowrap}
.tick{position:absolute;left:var(--x);bottom:34px;width:14px;height:var(--h);transform:translateX(-50%);background:none;border:0;padding:0;cursor:pointer;color:var(--fg)}
.tick::before{content:"";position:absolute;left:50%;bottom:0;top:6px;width:2px;transform:translateX(-50%);background:var(--c);opacity:.7}
.tick::after{content:"";position:absolute;left:50%;top:0;width:10px;height:10px;border-radius:50%;transform:translateX(-50%);background:var(--c);box-shadow:0 0 0 2px var(--bg);transition:transform .2s}
.tick span{position:absolute;left:50%;bottom:calc(100% + 9px);transform:translateX(-50%);font-family:var(--serif);font-weight:600;font-size:.95rem;background:var(--bg);padding:0 .25rem;opacity:0;pointer-events:none;transition:opacity .2s;z-index:2}
.tick:hover span,.tick:focus-visible span,.tick.on span{opacity:1}
.tick.on::after{transform:translateX(-50%) scale(1.5);box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--c)}
.tick.on::before{opacity:1}
.tick.on{z-index:3}
.scale span{position:absolute;left:var(--x);bottom:0;transform:translateX(-50%);font-size:.78rem;color:var(--fg-muted)}
.scale span::before{content:"";position:absolute;left:50%;bottom:calc(100% + 1px);width:1px;height:14px;background:var(--stone-400)}
.steps{list-style:none;margin:0;padding:.3rem 0 .8rem;display:flex;gap:0;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding-inline:0;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.step{flex:0 0 12.5rem;scroll-snap-align:start;padding:.3rem 1.1rem .6rem;border-left:3px solid var(--c);cursor:pointer;outline-offset:-2px;transition:background .2s}
.step b{display:block;font-family:var(--serif);font-size:1.9rem;font-weight:600;line-height:1.1;color:var(--fg)}
.step span{font-size:.95rem;color:var(--fg-muted);line-height:1.4}
.step.c-r b{color:var(--green-deep)}
.step.on{background:var(--bg-alt)}
.step.cent b::after{content:"100";margin-left:.45rem;font-family:var(--sans);font-size:.72rem;font-weight:600;vertical-align:.55em;padding:.15rem .4rem;border-radius:999px;background:var(--green);color:#1E2A0E}
@media (max-width:820px){
  .axis{height:120px}
  .tick{width:10px}
  .tick::after{width:8px;height:8px}
  .step{flex-basis:70%}
  .century span{font-size:.72rem}
}
@media (prefers-reduced-motion:reduce){.tick::after,.tick span,.step{transition:none}}