/* Cantiere Sicuro — static styles */
:root {
  --bg:#ffffff; --fg:#1c1f24;
  --ink:#15181d; --steel:#454a53;
  --muted:#6b7280; --muted-bg:#f4f5f7;
  --border:#e4e6ea;
  --safety:#f5c518; --safety-fg:#15181d;
  --warn:#ee7a1a;
  --white:#fff;
  --radius:.5rem;
  --max:1200px;
  --font: "Inter","Helvetica Neue",system-ui,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--fg);background:var(--bg);line-height:1.5;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{font-family:var(--font);letter-spacing:-.02em;line-height:1.1;font-weight:900}
ul{list-style:none}

.container{max-width:var(--max);margin:0 auto;padding:0 1rem}
@media(min-width:640px){.container{padding:0 1.5rem}}

/* hazard stripes */
.hazard{background-image:repeating-linear-gradient(135deg,var(--safety) 0 14px,var(--ink) 14px 28px)}

/* ============ HEADER ============ */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:.625rem;font-weight:700;font-size:1rem;letter-spacing:-.01em}
.brand .warn{color:var(--warn)}
.logo{display:grid;place-items:center;width:32px;height:32px;background:var(--ink);border-radius:.375rem;color:var(--safety)}
.nav-desktop{display:none;gap:1.75rem}
.nav-desktop a{font-size:.875rem;font-weight:500;color:var(--steel);transition:color .2s}
.nav-desktop a:hover{color:var(--ink)}
.cta-header{display:none;align-items:center;gap:.5rem;background:var(--ink);color:#fff;padding:.55rem 1rem;border-radius:var(--radius);font-size:.875rem;font-weight:600;transition:background .2s}
.cta-header:hover{background:var(--steel)}
.menu-btn{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:.375rem;background:#fff}
@media(min-width:1024px){.nav-desktop{display:flex}.cta-header{display:inline-flex}.menu-btn{display:none}}
.mobile-nav{display:none;border-top:1px solid var(--border);background:#fff;padding:.75rem 0}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:.625rem 1rem;font-size:.875rem;color:var(--steel);font-weight:500}
.mobile-nav .cta-mob{margin:.5rem 1rem 0;display:flex;justify-content:center;background:var(--ink);color:#fff;border-radius:var(--radius);padding:.625rem;font-weight:600}

/* ============ HERO ============ */
.hero{position:relative;isolate:isolate;background:var(--ink);color:#fff;overflow:hidden}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(to right,var(--ink),rgba(21,24,29,.85),rgba(21,24,29,.2))}
.hero-stripe{position:absolute;left:0;right:0;top:0;height:6px;opacity:.9}
.hero-inner{position:relative;padding:5rem 0;max-width:var(--max);margin:0 auto}
@media(min-width:1024px){.hero-inner{padding:8rem 0}}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.15);color:var(--safety);padding:.3rem .75rem;border-radius:9999px;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em}
.eyebrow .dot{width:6px;height:6px;background:var(--safety);border-radius:50%}
.hero h1{margin-top:1.5rem;font-size:2.25rem;line-height:1.05;max-width:900px;font-weight:900}
@media(min-width:640px){.hero h1{font-size:3rem}}
@media(min-width:1024px){.hero h1{font-size:3.75rem}}
.hero h1 .y{color:var(--safety)}
.hero p.lead{margin-top:1.5rem;max-width:640px;font-size:1.05rem;color:rgba(255,255,255,.78);line-height:1.65}
.hero-cta{margin-top:2.25rem;display:flex;flex-wrap:wrap;gap:.75rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.5rem;border-radius:var(--radius);font-size:.875rem;font-weight:700;transition:filter .2s,background .2s}
.btn-primary{background:var(--safety);color:var(--safety-fg);box-shadow:0 10px 25px -10px rgba(245,197,24,.4)}
.btn-primary:hover{filter:brightness(.95)}
.btn-ghost{background:rgba(255,255,255,.05);color:#fff;border:1px solid rgba(255,255,255,.25)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.hero-stats{margin-top:3.5rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.1);display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;max-width:640px}
@media(min-width:640px){.hero-stats{grid-template-columns:repeat(4,1fr)}}
.hero-stats .k{font-size:1.5rem;font-weight:900;color:var(--safety)}
.hero-stats .v{margin-top:.25rem;font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:rgba(255,255,255,.6)}

/* ============ SECTIONS ============ */
section{padding:0}
.sec{padding:5rem 0}
@media(min-width:1024px){.sec{padding:7rem 0}}
.tag{display:inline-flex;align-items:center;gap:.5rem;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.18em;color:var(--warn)}
.tag::before{content:"";width:32px;height:1px;background:var(--warn)}
.tag.dark{color:var(--safety)}
.tag.dark::before{background:var(--safety)}
.h2{margin-top:.75rem;font-size:1.875rem;font-weight:900;letter-spacing:-.02em}
@media(min-width:640px){.h2{font-size:2.25rem}}
.lead{margin-top:1.25rem;font-size:1rem;line-height:1.65;color:var(--muted)}

/* WhyStrip */
.why{background:#f7f8fa;border-bottom:1px solid var(--border)}
.why-head{margin-bottom:2.5rem;display:flex;flex-direction:column;gap:1rem;align-items:flex-start}
@media(min-width:1024px){.why-head{flex-direction:row;justify-content:space-between;align-items:flex-end}}
.why-head p{max-width:28rem;color:var(--muted)}
.why-grid{display:grid;grid-template-columns:1fr;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:.75rem;overflow:hidden}
@media(min-width:640px){.why-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.why-grid{grid-template-columns:repeat(4,1fr)}}
.why-card{background:#fff;padding:1.5rem}
.why-card h3{margin-top:1.25rem;font-size:1rem;font-weight:700}
.why-card p{margin-top:.5rem;font-size:.875rem;color:var(--muted);line-height:1.6}
.icon-box{display:grid;place-items:center;width:44px;height:44px;background:var(--ink);border-radius:.375rem;color:var(--safety)}

/* Monitoring */
.split{display:grid;grid-template-columns:1fr;gap:3rem;align-items:center}
@media(min-width:1024px){.split{grid-template-columns:1fr 1fr}}
.split img{width:100%;border-radius:.75rem;border:1px solid var(--border);box-shadow:0 25px 50px -12px rgba(0,0,0,.25)}
.bullets{margin-top:2rem;display:flex;flex-direction:column;gap:1rem}
.bullets li{display:flex;gap:1rem}
.bullets .b{margin-top:.25rem;width:24px;height:24px;flex-shrink:0;display:grid;place-items:center;background:var(--safety);border-radius:50%;color:var(--ink)}
.bullets .t{font-weight:600}
.bullets .d{font-size:.875rem;color:var(--muted);margin-top:.15rem}

/* AI */
.ai{background:var(--ink);color:#fff}
.ai .grid{display:grid;grid-template-columns:1fr;gap:3rem;align-items:flex-start}
@media(min-width:1024px){.ai .grid{grid-template-columns:5fr 7fr}.ai-cards{margin-top:5.5rem}}
.ai .lead{color:rgba(255,255,255,.7)}
.ai img{margin-top:2.5rem;width:100%;border-radius:.75rem;border:1px solid rgba(255,255,255,.1);display:none}
@media(min-width:1024px){.ai img{display:block}}
.ai-cards{display:grid;grid-template-columns:1fr;gap:1rem;margin-top:13rem}
@media(min-width:640px){.ai-cards{grid-template-columns:1fr 1fr}}
.ai-card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);padding:1.5rem;border-radius:.75rem;transition:border-color .2s,background .2s}
.ai-card:hover{border-color:rgba(245,197,24,.4);background:rgba(255,255,255,.05)}
.ai-card .icon-yellow{display:grid;place-items:center;width:44px;height:44px;background:var(--safety);color:var(--ink);border-radius:.375rem}
.ai-card h3{margin-top:1.25rem;font-size:1.125rem;font-weight:700}
.ai-card p{margin-top:.5rem;font-size:.875rem;color:rgba(255,255,255,.65);line-height:1.6}

/* Privacy */
.priv-bullets{margin-top:2rem;display:flex;flex-direction:column;gap:.75rem}
.priv-bullets li{display:flex;gap:.75rem;font-size:.875rem}
.priv-bullets svg{flex-shrink:0;margin-top:.15rem;color:var(--warn)}
.note{margin-top:2rem;border-left:2px solid var(--warn);background:#f4f5f7;padding:1rem;font-size:.75rem;color:var(--muted);line-height:1.65;border-radius:0 .25rem .25rem 0}
.priv-img{position:relative}
.priv-tag{display:none;position:absolute;bottom:-20px;left:-20px;background:#fff;border:1px solid var(--border);padding:1rem;border-radius:.5rem;box-shadow:0 25px 50px -12px rgba(0,0,0,.25)}
@media(min-width:768px){.priv-tag{display:block}}
.priv-tag .l{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}
.priv-tag .b{margin-top:.25rem;font-size:1.125rem;font-weight:900}

/* Certification */
.cert{background:#f7f8fa;position:relative;overflow:hidden}
.cert .hazard-side{display:none;position:absolute;top:0;right:0;width:8px;height:100%}
@media(min-width:1024px){.cert .hazard-side{display:block}}
.cert-cards{margin-top:2rem;display:grid;grid-template-columns:1fr;gap:1rem}
@media(min-width:640px){.cert-cards{grid-template-columns:1fr 1fr}}
.cert-card{background:#fff;border:1px solid var(--border);padding:1rem;border-radius:.5rem}
.cert-card .t{font-size:.875rem;font-weight:700}
.cert-card .d{margin-top:.25rem;font-size:.875rem;color:var(--muted)}
.report{background:#fff;border:1px solid var(--border);padding:2rem;border-radius:1rem;box-shadow:0 25px 50px -12px rgba(0,0,0,.15)}
.report-head{display:flex;align-items:center;gap:.75rem;border-bottom:1px solid var(--border);padding-bottom:1rem}
.report-head .t{font-size:.875rem;font-weight:600}
.badge{margin-left:auto;background:rgba(245,197,24,.2);color:var(--ink);font-size:.7rem;font-weight:700;padding:.15rem .5rem;border-radius:9999px}
.report dl{margin-top:1.5rem;display:grid;grid-template-columns:1fr 1fr;gap:1rem 1.5rem;font-size:.875rem}
.report dt{color:var(--muted)}
.report dd{font-weight:600;margin-top:.15rem}
.report dd.warn{color:var(--warn)}
.report .hash{margin-top:1.5rem;background:var(--ink);color:rgba(255,255,255,.7);padding:1rem;border-radius:.375rem;font-size:.75rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* Technology */
.tech-head{display:grid;grid-template-columns:1fr;gap:2.5rem;align-items:start}
@media(min-width:1024px){.tech-head{grid-template-columns:7fr 5fr}}
.tech-head img{display:none;width:100%;border-radius:.75rem;border:1px solid var(--border);box-shadow:0 20px 40px -12px rgba(0,0,0,.2)}
@media(min-width:1024px){.tech-head img{display:block}}
.tech-grid{margin-top:3rem;display:grid;grid-template-columns:1fr;gap:1rem}
@media(min-width:640px){.tech-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.tech-grid{grid-template-columns:repeat(3,1fr)}}
.tech-card{border:1px solid var(--border);background:#fff;padding:1.5rem;border-radius:.75rem;transition:border-color .2s,box-shadow .2s}
.tech-card:hover{border-color:rgba(21,24,29,.3);box-shadow:0 10px 25px -10px rgba(0,0,0,.1)}
.tech-card .ic{display:grid;place-items:center;width:40px;height:40px;background:#f4f5f7;color:var(--ink);border-radius:.375rem}
.tech-card h3{margin-top:1.25rem;font-size:1rem;font-weight:700}
.tech-card p{margin-top:.5rem;font-size:.875rem;color:var(--muted);line-height:1.6}

/* Audience */
.aud{background:var(--ink);color:#fff}
.aud .grid{display:grid;grid-template-columns:1fr;gap:2.5rem;align-items:center}
@media(min-width:1024px){.aud .grid{grid-template-columns:5fr 7fr}}
.aud .lead{color:rgba(255,255,255,.65)}
.aud-list{display:grid;grid-template-columns:1fr;gap:.75rem}
@media(min-width:640px){.aud-list{grid-template-columns:1fr 1fr}}
.aud-item{display:flex;align-items:center;gap:.75rem;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);padding:.85rem 1rem;border-radius:.5rem;font-size:.875rem;font-weight:500}
.aud-item::before{content:"";width:8px;height:8px;background:var(--safety);border-radius:50%;flex-shrink:0}

/* FAQ */
.faq-wrap{max-width:768px;margin:0 auto;padding:5rem 1rem}
@media(min-width:640px){.faq-wrap{padding:5rem 1.5rem}}
@media(min-width:1024px){.faq-wrap{padding:7rem 1.5rem}}
.faq-list{margin-top:2.5rem;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:0}
.faq-q{display:flex;width:100%;align-items:center;justify-content:space-between;gap:1rem;padding:1.25rem 0;text-align:left;font-size:1rem;font-weight:600}
.faq-q svg{flex-shrink:0;color:var(--muted);transition:transform .25s,color .25s}
.faq-item.open .faq-q svg{transform:rotate(180deg);color:var(--ink)}
.faq-a{display:none;padding:0 0 1.5rem;font-size:.875rem;color:var(--muted);line-height:1.7}
.faq-item.open .faq-a{display:block}

/* Contact */
.contact{position:relative;overflow:hidden;background:var(--ink);color:#fff}
.contact .hazard-bottom{position:absolute;bottom:0;left:0;right:0;height:6px}
.contact .grid{display:grid;grid-template-columns:1fr;gap:3rem}
@media(min-width:1024px){.contact .grid{grid-template-columns:5fr 7fr}}
.contact .lead{color:rgba(255,255,255,.7)}
.contact .info{margin-top:2.5rem;display:flex;flex-direction:column;gap:1rem;font-size:.875rem;color:rgba(255,255,255,.8)}
.contact .info div{display:flex;align-items:center;gap:.75rem}
.contact .info svg{color:var(--safety)}
.form{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);padding:1.5rem;border-radius:1rem}
@media(min-width:640px){.form{padding:2rem}}
.form .row{display:grid;grid-template-columns:1fr;gap:1rem}
@media(min-width:640px){.form .row{grid-template-columns:1fr 1fr}}
.field label{display:block;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:rgba(255,255,255,.6)}
.field label .req{color:var(--safety)}
.field input,.field textarea{margin-top:.5rem;width:100%;background:rgba(21,24,29,.6);border:1px solid rgba(255,255,255,.15);color:#fff;padding:.625rem .75rem;border-radius:.375rem;font:inherit;font-size:.875rem;outline:0;transition:border-color .2s}
.field input:focus,.field textarea:focus{border-color:var(--safety)}
.field textarea{resize:vertical;min-height:110px}
.form .full{margin-top:1rem}
.form .privacy-note{margin-top:1rem;font-size:.75rem;color:rgba(255,255,255,.5)}
.submit{margin-top:1.5rem;width:100%}
@media(min-width:640px){.submit{width:auto}}
.sent{display:grid;place-items:center;text-align:center;padding:4rem 0}
.sent .circle{width:56px;height:56px;background:var(--safety);border-radius:50%;display:grid;place-items:center;color:var(--ink)}
.sent h3{margin-top:1.5rem;font-size:1.5rem;font-weight:900}
.sent p{margin-top:.5rem;max-width:28rem;font-size:.875rem;color:rgba(255,255,255,.7)}

/* Footer mini */
.footer{display:flex;justify-content:center;padding:2.5rem 1rem}
.footer .brand{font-size:1rem}