/* Tema chiaro: valori di base. Il tema scuro vale se lo sceglie il visitatore (data-theme="dark")
   oppure, se non ha scelto nulla, quando il suo dispositivo e' impostato sullo scuro. */
:root{
  color-scheme:light;
  --bg:#faf7f2; --surface:#ffffff; --ink:#15161c; --muted:#5d6070; --line:#e6e0d6;
  --accent:#c8381a; --accent-ink:#ffffff; --accent-soft:#fdeee8;
  --indigo:#2a2f8f; --indigo-soft:#eceefb; --ok:#0f7a4f;
  --shadow:0 12px 34px rgba(21,22,28,.09);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#0f1014; --surface:#181a21; --ink:#f3f0ea; --muted:#a6a9b8; --line:#2b2e3a;
    --accent:#ff7a5c; --accent-ink:#1a0d08; --accent-soft:#2c1a15;
    --indigo:#a4abff; --indigo-soft:#1d2040; --ok:#4fd39a;
    --shadow:0 12px 34px rgba(0,0,0,.45);
  }
  :root:not([data-theme="light"]) .theme .sun{display:block}
  :root:not([data-theme="light"]) .theme .moon{display:none}
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0f1014; --surface:#181a21; --ink:#f3f0ea; --muted:#a6a9b8; --line:#2b2e3a;
  --accent:#ff7a5c; --accent-ink:#1a0d08; --accent-soft:#2c1a15;
  --indigo:#a4abff; --indigo-soft:#1d2040; --ok:#4fd39a;
  --shadow:0 12px 34px rgba(0,0,0,.45);
}
:root[data-theme="dark"] .theme .sun{display:block}
:root[data-theme="dark"] .theme .moon{display:none}

*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
img,svg{max-width:100%}
::placeholder{color:var(--muted);opacity:1}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--bg);padding:10px 14px;border-radius:8px;z-index:50}
.skip:focus{left:12px}
:focus-visible{outline:3px solid var(--indigo);outline-offset:3px;border-radius:6px}
h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:-.015em;line-height:1.12}
h1{font-size:clamp(36px,6vw,64px)}
h2{font-size:clamp(28px,4vw,42px);margin-bottom:14px}
h3{font-size:22px;margin-bottom:8px}
em.hl{font-style:italic;color:var(--accent)}
.lead{font-size:clamp(18px,2.1vw,21px);color:var(--muted);max-width:640px}
.eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--indigo);font-weight:700;margin-bottom:12px}
section{padding:82px 0}
.sec-head{max-width:720px;margin-bottom:40px}
.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.note{font-size:14.5px;color:var(--muted);margin-top:18px}
.banner{background:var(--indigo);color:var(--bg);text-align:center;padding:9px 14px;font-weight:700;font-size:14.5px}

/* barra di navigazione */
.nav{position:sticky;top:0;z-index:20;background:var(--bg);background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.nav nav{display:flex;align-items:center;gap:14px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--serif);font-size:23px;font-weight:600}
.logo i{font-style:italic;color:var(--accent)}
.menu{display:flex;align-items:center;gap:26px;list-style:none}
.menu a{color:var(--ink);text-decoration:none;font-size:15.5px;font-weight:500}
.menu a:hover,.menu a[aria-current]{text-decoration:underline;text-underline-offset:5px;text-decoration-color:var(--accent);text-decoration-thickness:2px}
.theme{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;flex:none;border-radius:50%;border:1px solid var(--muted);background:transparent;color:var(--ink);cursor:pointer}
.theme svg{width:20px;height:20px}
.theme .sun{display:none}
.burger{display:none;background:none;border:1px solid var(--muted);border-radius:10px;padding:8px 10px;color:var(--ink);font-size:20px;line-height:1;cursor:pointer}

/* pulsanti */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:999px;font-weight:700;font-size:16px;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:inherit;transition:transform .12s ease}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--accent);color:var(--accent-ink);box-shadow:0 8px 20px color-mix(in srgb,var(--accent) 28%,transparent)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--muted)}
.btn.small{padding:9px 16px;font-size:15px}
.menu .btn.primary{color:var(--accent-ink);text-decoration:none}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}

/* schede e griglie */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:28px}
.alt .card{background:var(--bg)}
.card p{color:var(--muted)}
.card ul{list-style:none;margin-top:14px}
.card li{padding-left:26px;position:relative;margin-bottom:7px;font-size:15.5px}
.card li::before{content:"";position:absolute;left:0;top:.5em;width:14px;height:8px;border-left:2.5px solid var(--ok);border-bottom:2.5px solid var(--ok);transform:rotate(-45deg) translateY(-3px)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.step{border-top:3px solid var(--accent);padding-top:16px}
.step::before{counter-increment:s;content:"0" counter(s);font-family:var(--serif);font-size:30px;color:var(--accent);display:block;margin-bottom:6px}
.step p{color:var(--muted);font-size:15.5px}
.dot{width:9px;height:9px;border-radius:50%;background:var(--ok);display:inline-block}
.card p.more{margin-top:14px;font-weight:700}

/* domande e risposte */
.faq{max-width:780px}
details{border-bottom:1px solid var(--line);padding:18px 0}
summary{cursor:pointer;font-weight:700;font-size:18px;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";content:"+" / "";color:var(--accent);font-size:24px;line-height:1}
details[open] summary::after{content:"–";content:"–" / ""}
details p{color:var(--muted);margin-top:10px}

footer{padding:38px 0 46px;color:var(--muted);font-size:14.5px}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
footer a{color:var(--muted)}

@media (max-width:900px){
  .grid3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  section{padding:60px 0}
  .burger{display:block}
  .menu{display:none;position:absolute;left:0;right:0;top:68px;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;padding:18px 22px;gap:16px}
  .menu.open{display:flex}
}
@media (max-width:520px){ .steps{grid-template-columns:1fr} }
@media (prefers-reduced-motion:reduce){ *{transition:none!important;animation:none!important;scroll-behavior:auto!important} }