/* Inter variabile self-hosted (assets/fonts): nessuna richiesta a Google Fonts. */
@font-face{font-family:'Inter';font-style:normal;font-weight:300 700;font-display:swap;src:url('fonts/inter-latin-ext.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Inter';font-style:normal;font-weight:300 700;font-display:swap;src:url('fonts/inter-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
/* Carbonvia — sito vetrina (beta). Design system: docs/sito-vetrina/02-design-ui.md */
:root{
  --ink:#0F172A; --body:#475569; --faint:#64748B;
  --surface:#FFFFFF; --surface-2:#F8FAFC; --line:#E2E8F0;
  --brand:#0D9488; --brand-strong:#0F766E; --brand-soft:#F0FDFA; --brand-border:#99F6E4;
  --accent:#F59E0B; --accent-ink:#92400E; --accent-soft:#FFFBEB;
  --positive:#059669; --negative:#E11D48;
  --dark-bg:#0B1220; --dark-card:#111B2E; --dark-ink:#E2E8F0; --dark-line:#1E293B;
  --radius:16px; --radius-s:10px;
  --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px -12px rgba(15,23,42,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--surface);color:var(--body);
  font:400 17px/1.6 Inter,system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased}
h1,h2,h3,h4{color:var(--ink);line-height:1.15;letter-spacing:-.02em;text-wrap:balance;margin:0 0 .4em}
h1{font-size:clamp(2.4rem,5.5vw,4rem);font-weight:700}
h2{font-size:clamp(1.7rem,3.2vw,2.4rem);font-weight:700}
h3{font-size:1.25rem;font-weight:600}
h4{font-size:1rem;font-weight:600}
p{margin:.4em 0 1em}
a{color:var(--brand-strong);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
section{padding:72px 0}
.num{font-variant-numeric:tabular-nums}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:600;letter-spacing:.12em;
  text-transform:uppercase;color:var(--brand-strong);margin-bottom:12px}
.lede{font-size:1.2rem;color:var(--body);max-width:44em}
.center{text-align:center}
.muted{color:var(--faint);font-size:.9rem}

/* Topbar countdown */
.topbar{background:var(--ink);color:#CBD5E1;font-size:.85rem;text-align:center;padding:8px 16px}
.topbar b{color:#FCD34D;font-weight:600}
.topbar a{color:#5EEAD4}

/* Header */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:28px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:1.1rem}
.logo:hover{text-decoration:none}
.logo .mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,#0D9488,#134E4A);
  display:grid;place-items:center;color:#fff;font-size:15px}
.logo .beta{font-size:.62rem;font-weight:600;letter-spacing:.08em;color:var(--accent-ink);
  background:var(--accent-soft);border:1px solid #FDE68A;border-radius:999px;padding:2px 7px;margin-left:2px}
.nav-links{display:flex;gap:22px;margin-left:8px;flex:1}
.nav-links a{color:var(--body);font-size:.92rem;font-weight:500}
.nav-links a:hover{color:var(--ink);text-decoration:none}
.nav-cta{display:flex;gap:10px;align-items:center}
.nav-toggle{display:none}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:var(--radius-s);
  font-weight:600;font-size:.95rem;padding:12px 22px;cursor:pointer;border:1px solid transparent;
  transition:transform .12s,box-shadow .12s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-strong);box-shadow:0 6px 18px -6px rgba(13,148,136,.5)}
.btn-secondary{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-secondary:hover{border-color:var(--brand)}
.btn-ghost{color:var(--ink);padding:12px 14px}
.btn-lg{padding:15px 28px;font-size:1.02rem}
.btn-dark-primary{background:#fff;color:var(--ink)}
.btn-dark-secondary{background:transparent;color:#fff;border-color:#334155}

/* Hero */
.hero{padding:88px 0 64px;background:
  radial-gradient(60% 50% at 75% 0%,rgba(13,148,136,.10),transparent 60%),
  radial-gradient(45% 40% at 15% 10%,rgba(15,118,110,.07),transparent 60%),var(--surface)}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;margin:28px 0 10px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-top:12px}
.hero .under{font-size:.85rem;color:var(--faint)}

/* Trust row */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface-2);padding:22px 0}
.trust .row{display:flex;gap:12px 36px;flex-wrap:wrap;justify-content:center;
  font-size:.86rem;color:var(--faint);font-weight:500}
.trust .row span{display:flex;align-items:center;gap:8px}
.trust .dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* Cards / bento */
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow)}
.card h3{margin-top:14px}
.card .icon{width:42px;height:42px;border-radius:11px;background:var(--brand-soft);
  border:1px solid var(--brand-border);display:grid;place-items:center;font-size:20px}
.bento{display:grid;gap:18px;grid-template-columns:repeat(6,1fr)}
.bento .b-lg{grid-column:span 4}
.bento .b-md{grid-column:span 2}
.bento .b-sm{grid-column:span 2}
.bento .card{display:flex;flex-direction:column}
.bento .card .mock{margin-top:auto}
.taglink{font-weight:600;font-size:.9rem}

/* CSS product mockups */
.mock{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-top:18px}
.mock .bar{display:flex;gap:6px;padding:9px 12px;border-bottom:1px solid var(--line);background:#fff}
.mock .bar i{width:9px;height:9px;border-radius:50%;background:var(--line);display:block}
.mock .pad{padding:16px}
.kpi-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:9px;padding:10px 12px}
.kpi small{display:block;font-size:.62rem;letter-spacing:.06em;text-transform:uppercase;color:var(--faint)}
.kpi b{font-size:1.06rem;color:var(--ink)}
.kpi .up{color:var(--negative);font-size:.68rem}
.kpi .down{color:var(--positive);font-size:.68rem}
.spark{display:flex;align-items:flex-end;gap:4px;height:64px;margin-top:12px;
  background:#fff;border:1px solid var(--line);border-radius:9px;padding:10px}
.spark i{flex:1;background:linear-gradient(180deg,#2DD4BF,#0D9488);border-radius:3px 3px 0 0;display:block}
.rows{margin-top:12px;background:#fff;border:1px solid var(--line);border-radius:9px;overflow:hidden;font-size:.72rem}
.rows>div{display:grid;grid-template-columns:1.3fr 1fr 1fr .8fr;gap:8px;padding:7px 12px;border-bottom:1px solid var(--line)}
.rows>div:last-child{border-bottom:none}
.rows .h{background:var(--surface-2);font-weight:600;color:var(--faint);text-transform:uppercase;font-size:.6rem;letter-spacing:.05em}
.rows b{color:var(--ink)}
.pill{display:inline-block;font-size:.62rem;font-weight:600;border-radius:999px;padding:2px 8px}
.pill-est{background:var(--accent-soft);color:var(--accent-ink);border:1px solid #FDE68A}
.pill-cert{background:#ECFDF5;color:#065F46;border:1px solid #A7F3D0}
.pill-nc{background:var(--brand-soft);color:var(--brand-strong);border:1px solid var(--brand-border)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:step}
.step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);
  font-size:.8rem;font-weight:700;color:var(--brand);letter-spacing:.08em}
.step h3{margin-top:10px;font-size:1.08rem}
.step p{font-size:.92rem;margin-bottom:0}

/* Dark sections */
.dark{background:var(--dark-bg);color:#94A3B8}
.dark h2,.dark h3,.dark h4{color:#F1F5F9}
.dark .eyebrow{color:#5EEAD4}
.dark .card{background:var(--dark-card);border-color:var(--dark-line);box-shadow:none}
.dark .card p{color:#94A3B8}
.dark a{color:#5EEAD4}
.big-number{font-size:clamp(3rem,7vw,5rem);font-weight:700;color:#5EEAD4;letter-spacing:-.03em;line-height:1}
.compare-bars{display:grid;gap:14px;margin-top:26px}
.cbar{display:grid;grid-template-columns:170px 1fr 90px;gap:14px;align-items:center;font-size:.9rem}
.cbar .track{height:26px;border-radius:7px;background:var(--dark-line);overflow:hidden}
.cbar .fill{height:100%;border-radius:7px}
.cbar .f-def{width:100%;background:linear-gradient(90deg,#F43F5E,#BE123C)}
.cbar .f-real{width:58%;background:linear-gradient(90deg,#2DD4BF,#0D9488)}
.cbar b{color:#F1F5F9;text-align:right}

/* Timeline */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:34px}
.t-item{border-top:3px solid var(--line);padding:16px 18px 0 0;position:relative}
.t-item::before{content:"";position:absolute;top:-8px;left:0;width:13px;height:13px;border-radius:50%;
  background:var(--brand);border:3px solid var(--surface)}
.t-item.warn::before{background:var(--accent)}
.t-item .date{font-size:.78rem;font-weight:700;color:var(--accent-ink);letter-spacing:.04em}
.t-item h4{margin:.35em 0 .2em}
.t-item p{font-size:.85rem;margin:0}

/* Pricing */
.toggle{display:inline-flex;background:var(--surface-2);border:1px solid var(--line);
  border-radius:999px;padding:4px;gap:4px;margin:18px 0 6px}
.toggle button{border:0;background:transparent;border-radius:999px;padding:8px 18px;
  font:600 .9rem Inter,sans-serif;color:var(--faint);cursor:pointer}
.toggle button.on{background:var(--ink);color:#fff}
.toggle .save{color:var(--positive);font-weight:700}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch;margin-top:26px}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.plan.featured{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand),var(--shadow);position:relative}
.plan .badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--brand);color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;border-radius:999px;padding:5px 14px}
.plan .name{font-size:1.15rem;font-weight:700;color:var(--ink)}
.plan .for{font-size:.88rem;color:var(--faint);min-height:44px;margin:.3em 0 1em}
.plan .price{font-size:2.3rem;font-weight:700;color:var(--ink);letter-spacing:-.02em}
.plan .price small{font-size:.85rem;font-weight:500;color:var(--faint);letter-spacing:0}
.plan .alt{font-size:.8rem;color:var(--faint);min-height:20px}
.plan ul{list-style:none;padding:0;margin:18px 0 22px;font-size:.9rem}
.plan li{padding:7px 0 7px 26px;position:relative;border-bottom:1px dashed var(--line)}
.plan li:last-child{border-bottom:none}
.plan li::before{content:"✓";position:absolute;left:2px;color:var(--brand);font-weight:700}
.plan li.no::before{content:"—";color:var(--line)}
.plan li.no{color:var(--faint)}
.plan .btn{margin-top:auto;justify-content:center}
.anchor-line{text-align:center;font-size:.92rem;color:var(--faint);margin-top:22px}
.anchor-line b{color:var(--ink)}

/* Compare table */
table.compare{width:100%;border-collapse:collapse;font-size:.92rem;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.compare th{background:var(--surface-2);font-size:.75rem;text-transform:uppercase;letter-spacing:.07em;
  color:var(--faint);text-align:left;padding:13px 16px;border-bottom:1px solid var(--line)}
.compare td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.compare tr:last-child td{border-bottom:none}
.compare td b{color:var(--ink)}
.compare .hl{background:var(--brand-soft)}
.tablewrap{overflow-x:auto;border-radius:var(--radius);margin-top:26px}

/* FAQ */
.faq{max-width:820px;margin:26px auto 0}
.faq details{border:1px solid var(--line);border-radius:12px;background:var(--surface);
  margin-bottom:10px;padding:0 20px}
.faq summary{cursor:pointer;font-weight:600;color:var(--ink);padding:16px 0;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:14px;font-size:1.2rem;color:var(--brand)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin-top:0;padding-bottom:16px;font-size:.95rem}

/* CTA finale */
.cta-final{background:linear-gradient(135deg,#0F766E,#134E4A);color:#CCFBF1;border-radius:24px;
  padding:56px 40px;text-align:center}
.cta-final h2{color:#fff}
.cta-final .cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:26px}

/* Calculator */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:30px}
.calc .panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow)}
.field{margin-bottom:16px}
.field label{display:block;font-size:.82rem;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input,.field select{width:100%;border:1px solid var(--line);border-radius:9px;
  padding:11px 12px;font:400 .95rem Inter,sans-serif;color:var(--ink);background:#fff}
.field input:focus,.field select:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
.field .hint{font-size:.75rem;color:var(--faint);margin-top:4px}
.result{border-left:4px solid var(--brand)}
.result .rr{display:flex;justify-content:space-between;align-items:baseline;
  padding:11px 0;border-bottom:1px dashed var(--line);font-size:.95rem}
.result .rr:last-of-type{border-bottom:none}
.result .rr b{font-size:1.05rem;color:var(--ink)}
.result .total{font-size:2rem;font-weight:700;color:var(--brand-strong)}
.ets-badge{display:inline-flex;align-items:center;gap:8px;background:var(--brand-soft);
  border:1px solid var(--brand-border);color:var(--brand-strong);font-size:.85rem;font-weight:600;
  border-radius:999px;padding:7px 14px}
.ets-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.4}}
.notice{background:var(--accent-soft);border:1px solid #FDE68A;border-radius:10px;
  padding:12px 16px;font-size:.85rem;color:var(--accent-ink);margin-top:16px}

/* Footer */
footer.site{background:var(--surface-2);border-top:1px solid var(--line);padding:56px 0 32px;font-size:.9rem}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.fgrid h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--faint)}
.fgrid ul{list-style:none;padding:0;margin:0}
.fgrid li{margin:8px 0}
.fgrid a{color:var(--body)}
.legal{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--faint);font-size:.8rem}

/* Feature pages */
.f-hero{padding:72px 0 48px;background:
  radial-gradient(50% 45% at 80% 0%,rgba(13,148,136,.09),transparent 60%),var(--surface)}
.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:8px}
.walk{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;padding:34px 0;border-bottom:1px solid var(--line)}
.walk:last-child{border-bottom:none}
.walk.flip .txt{order:2}
.tech{background:var(--surface-2);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:12px;padding:22px 26px;margin-top:34px}
.tech h4{margin-bottom:6px}
.tech p{font-size:.92rem;margin:0}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s,transform .5s}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* Responsive */
@media(max-width:960px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento .b-lg,.bento .b-md,.bento .b-sm{grid-column:span 2}
  .grid-3,.steps,.plans,.benefits{grid-template-columns:1fr}
  .grid-2,.calc,.walk,.hero-grid,.split{grid-template-columns:1fr}
  .walk.flip .txt{order:0}
  .timeline{grid-template-columns:1fr;gap:18px}
  .fgrid{grid-template-columns:1fr 1fr}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);flex-direction:column;padding:16px 24px;gap:14px}
  .nav-links.open{display:flex}
  .nav-toggle{display:block;background:none;border:1px solid var(--line);border-radius:8px;
    padding:7px 11px;font-size:1rem;cursor:pointer;color:var(--ink)}
  .nav-cta .btn-secondary{display:none}
  .cbar{grid-template-columns:1fr;gap:6px}
  .cbar b{text-align:left}
}