/* Next Energy — stile comune del sito (tema scuro e tema chiaro) */
:root{
  --ink:#0b0f0e; --deep:#0d1a18; --surf:#111f1d; --raise:#162724;
  --fg:#ffffff; --fg2:rgba(255,255,255,.72); --muted:rgba(255,255,255,.48); --faint:rgba(255,255,255,.22);
  --line:rgba(255,255,255,.08); --line2:rgba(255,255,255,.14);
  --g1:#1a9e87; --g2:#21c9a8; --gtext:#21c9a8; --gsoft:rgba(33,201,168,.08); --gline:rgba(33,201,168,.25);
  --warn:#f0b955; --bad:#ff8577; --ok:#5fd38a;
  --header:rgba(11,15,14,.94); --grid:rgba(33,201,168,.04); --shade:rgba(11,15,14,.92);
  --field:#0b1513;
  --fd:'Fraunces',Georgia,serif; --fb:'Outfit',system-ui,sans-serif; --fm:'Geist Mono',ui-monospace,Menlo,monospace;
  --ease:cubic-bezier(.16,1,.3,1);
  color-scheme:dark;
}
:root[data-theme="light"]{
  --ink:#ffffff; --deep:#f4f8f7; --surf:#ffffff; --raise:#eef5f3;
  --fg:#0b1a1c; --fg2:#2b3d3e; --muted:#566b6b; --faint:#8a9b9b;
  --line:#dbe6e4; --line2:#c6d6d3;
  --g1:#0a8578; --g2:#0f9c8b; --gtext:#0a8578; --gsoft:rgba(10,133,120,.07); --gline:rgba(10,133,120,.28);
  --warn:#96610a; --bad:#b93a2c; --ok:#18794a;
  --header:rgba(255,255,255,.94); --grid:rgba(10,133,120,.05); --shade:rgba(255,255,255,.9);
  --field:#ffffff;
  color-scheme:light;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none!important}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--fb);background:var(--ink);color:var(--fg);-webkit-font-smoothing:antialiased;overflow-x:hidden;line-height:1.5;transition:background .25s,color .25s}
::selection{background:var(--g1);color:#fff}
a{color:inherit}
img{max-width:100%}
:focus-visible{outline:2px solid var(--g2);outline-offset:2px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

/* Logo: verde dei contratti in chiaro, verde acceso in scuro */
.nx-logo{display:flex;align-items:center;text-decoration:none;flex-shrink:0}
.nx-logo img{height:38px;width:auto;display:block}
.nx-logo .l-dark{display:block}.nx-logo .l-light{display:none}
:root[data-theme="light"] .nx-logo .l-dark{display:none}
:root[data-theme="light"] .nx-logo .l-light{display:block}

/* Header */
.nx-header{position:sticky;top:0;z-index:200;background:var(--header);border-bottom:1px solid var(--line);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}
.nx-header-inner{max-width:1200px;margin:0 auto;padding:0 1.5rem;height:68px;display:flex;align-items:center;justify-content:space-between;gap:1.5rem}
.nx-nav{display:flex;align-items:center;gap:1.7rem;flex:1;justify-content:center}
.nx-nav a{font-size:.84rem;color:var(--muted);text-decoration:none;white-space:nowrap;transition:color .2s}
.nx-nav a:hover,.nx-nav a[aria-current="page"]{color:var(--fg)}
.nx-actions{display:flex;align-items:center;gap:.8rem;flex-shrink:0}
.nx-theme{width:38px;height:38px;border-radius:50%;border:1px solid var(--line2);background:transparent;color:var(--fg2);display:grid;place-items:center;cursor:pointer;transition:background .2s}
.nx-theme:hover{background:var(--gsoft)}
.nx-theme svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.nx-theme .sun{display:none}:root[data-theme="light"] .nx-theme .sun{display:block}:root[data-theme="light"] .nx-theme .moon{display:none}
.nx-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;background:linear-gradient(135deg,var(--g1),var(--g2));color:#fff;font-family:var(--fb);font-size:.86rem;font-weight:600;padding:.6rem 1.3rem;border-radius:100px;text-decoration:none;border:0;cursor:pointer;box-shadow:0 4px 22px rgba(33,201,168,.25);transition:opacity .2s,transform .15s}
.btn-primary{padding:.85rem 1.9rem;font-size:.9rem}
.nx-cta:hover,.btn-primary:hover{opacity:.9;transform:translateY(-1px)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;background:var(--gsoft);color:var(--fg2);font-family:var(--fb);font-size:.9rem;font-weight:500;padding:.85rem 1.9rem;border-radius:100px;text-decoration:none;border:1px solid var(--line2);cursor:pointer;transition:background .2s}
.btn-secondary:hover{background:var(--raise)}
.btn-small{padding:.45rem .95rem;font-size:.8rem}
.nx-ham{display:none;width:38px;height:38px;border:0;background:none;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nx-ham span{display:block;width:22px;height:1.5px;background:var(--fg2);border-radius:2px}
.nx-mobile{display:none;flex-direction:column;padding:.5rem 1.5rem 1.2rem;border-top:1px solid var(--line)}
.nx-mobile a{font-size:.95rem;color:var(--fg2);text-decoration:none;padding:.7rem 0;border-bottom:1px solid var(--line)}
.nx-mobile a.nx-cta{margin-top:.9rem;border:0;color:#fff;justify-content:center}
.nx-mobile.open{display:flex}
@media (max-width:860px){.nx-nav,.nx-actions .nx-cta{display:none}.nx-ham{display:flex}}

/* Footer */
.nx-footer{background:var(--deep);border-top:1px solid var(--line);font-family:var(--fb);position:relative;z-index:1}
.nx-footer-grid{max-width:1200px;margin:0 auto;padding:3.5rem 1.5rem 2.5rem;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2.5rem}
.nx-footer-brand p{font-size:.8rem;color:var(--muted);line-height:1.85;font-weight:300;max-width:260px;margin-top:1rem}
.nx-footer-title{font-family:var(--fm);font-size:.6rem;color:var(--faint);letter-spacing:2px;text-transform:uppercase;margin-bottom:1rem}
.nx-footer-col a{display:block;font-size:.82rem;color:var(--muted);text-decoration:none;margin-bottom:.5rem}
.nx-footer-col a:hover{color:var(--fg)}
.nx-footer-bottom{max-width:1200px;margin:0 auto;padding:1.6rem 1.5rem;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;font-family:var(--fm);font-size:.62rem;color:var(--faint);letter-spacing:.4px}
@media (max-width:820px){.nx-footer-grid{grid-template-columns:1fr 1fr}.nx-footer-brand{grid-column:span 2}}
@media (max-width:480px){.nx-footer-grid{grid-template-columns:1fr}.nx-footer-brand{grid-column:auto}}

/* Elementi comuni */
.tag{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--fm);font-size:.62rem;color:var(--gtext);letter-spacing:2px;text-transform:uppercase;margin-bottom:.9rem}
.tag::before{content:'';width:18px;height:1px;background:var(--g1)}
.h2{font-family:var(--fd);font-size:clamp(2rem,4vw,3rem);font-weight:300;color:var(--fg);letter-spacing:-.8px;line-height:1.1;text-wrap:balance}
.h2 em,.em{font-style:italic;color:var(--gtext)}
.lead{font-size:.95rem;color:var(--muted);line-height:1.85;font-weight:300;max-width:56ch}
.wrap{max-width:1200px;margin:0 auto;padding-inline:1.5rem}
.notice{border:1px dashed var(--warn);border-radius:12px;padding:.8rem 1rem;font-size:.85rem;color:var(--fg2)}
.notice b{color:var(--warn)}