:root {
  --paper: #F7F8F5;
  --sheet: #FFFFFF;
  --ink: #1C2633;
  --ink-soft: #55606D;
  --rule: #DADFD8;
  --ledger: #1F6B57;
  --ledger-dark: #17513F;
  --ledger-tint: #E6F0EC;
  --band: #EEF2EC;
  --focus: #2459B3;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --wrap: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #12181F;
    --sheet: #1A222B;
    --ink: #E8ECEF;
    --ink-soft: #A6B0BA;
    --rule: #2C3640;
    --ledger: #5FC1A0;
    --ledger-dark: #8AD6BC;
    --ledger-tint: #1C3830;
    --band: #161E26;
    --focus: #8DB4FF;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--font);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--ledger); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { margin: 0; line-height: 1.15; letter-spacing: -0.015em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.25rem); font-weight: 680; margin-bottom: 14px; }
h3 { font-size: 1.2rem; font-weight: 640; margin-bottom: 8px; }
p { margin: 0 0 12px; }
figure { margin: 0; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }
.center { text-align: center; }
.muted { color: var(--ink-soft); font-size: 0.875rem; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; background: var(--sheet); padding: 8px 12px; z-index: 10; }

/* Testata */
.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule); }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 720; font-size: 1.25rem; letter-spacing: -0.02em; }
.logo svg { width: 30px; height: 30px; color: var(--ledger); }
nav { display: flex; align-items: center; gap: 22px; }
nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; }
nav a:hover { color: var(--ink); }

/* Pulsanti */
.btn { display: inline-block; background: var(--ledger); color: #fff; text-decoration: none; font-weight: 600; padding: 13px 22px; border-radius: 8px; }
.btn:hover { background: var(--ledger-dark); color: #fff; }
@media (prefers-color-scheme: dark) { .btn, .btn:hover { color: #0E1A15; } }
nav a.btn-small { color: #fff; padding: 8px 14px; font-size: 0.9rem; }
@media (prefers-color-scheme: dark) { nav a.btn-small { color: #0E1A15; } }
.link-arrow { font-weight: 600; text-decoration: none; }
.link-arrow::after { content: " →"; }

/* Apertura */
.hero { padding: 72px 0 64px; }
.hero-in { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 48px; align-items: center; }
.eyebrow { color: var(--ledger); font-weight: 640; font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 14px; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 760; letter-spacing: -0.03em; margin-bottom: 20px; }
h1 span { color: var(--ledger); }
.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 34em; margin-bottom: 28px; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; }
.hero-shot img, .shot img { border-radius: 10px; border: 1px solid var(--rule); box-shadow: 0 18px 48px -18px rgba(28, 38, 51, 0.28); }

/* Fasce */
section { padding: 80px 0; scroll-margin-top: 64px; }
.band { background: var(--band); border-block: 1px solid var(--rule); }
.section-lead { color: var(--ink-soft); font-size: 1.1rem; max-width: 40em; margin-bottom: 40px; }
.center .section-lead { margin-inline: auto; }

.steps { list-style: none; margin: 32px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.steps li { background: var(--sheet); border: 1px solid var(--rule); border-radius: 10px; padding: 26px; }
.step-n { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--ledger-tint); color: var(--ledger); font-weight: 700; margin-bottom: 14px; }
.steps p { color: var(--ink-soft); margin: 0; }

.module { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: center; padding: 36px 0; }
.module + .module { border-top: 1px solid var(--rule); }
.module.flip .module-text { order: 2; }
.ticks { list-style: none; padding: 0; margin: 16px 0 0; }
.ticks li { position: relative; padding-left: 28px; margin-bottom: 10px; color: var(--ink-soft); }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 0.5em; width: 12px; height: 7px; border-left: 2.5px solid var(--ledger); border-bottom: 2.5px solid var(--ledger); transform: rotate(-45deg); }

.phone-in { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 48px; align-items: center; }
.phone img { border-radius: 26px; border: 6px solid var(--ink); box-shadow: 0 18px 48px -18px rgba(28, 38, 51, 0.35); }
.phone-band .section-lead { margin-bottom: 0; }

.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 32px; }
.card { background: var(--sheet); border: 1px solid var(--rule); border-top: 3px solid var(--ledger); border-radius: 8px; padding: 24px; }
.card p { color: var(--ink-soft); margin: 0; }

#normativa p { color: var(--ink-soft); }
#normativa strong { color: var(--ink); }

.final { background: var(--ledger); color: #fff; }
.final h2 { color: #fff; }
.final .section-lead { color: rgba(255, 255, 255, 0.86); margin-bottom: 28px; }
.btn-light, .btn-light:hover { background: #fff; color: var(--ledger-dark); }
@media (prefers-color-scheme: dark) {
  .final { background: var(--ledger-tint); color: var(--ink); }
  .final h2 { color: var(--ink); }
  .final .section-lead { color: var(--ink-soft); }
  .btn-light, .btn-light:hover { background: var(--ledger); color: #0E1A15; }
}

.foot { padding: 36px 0 44px; border-top: 1px solid var(--rule); font-size: 0.95rem; }
.foot-in p { margin-bottom: 6px; }

/* Pagina 404 */
.notfound { min-height: 60vh; display: grid; place-items: center; text-align: center; }

/* Schermi stretti */
@media (max-width: 900px) {
  .hero { padding: 44px 0 40px; }
  .hero-in, .module, .phone-in { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .module.flip .module-text { order: 0; }
  .steps, .grid3 { grid-template-columns: minmax(0, 1fr); }
  .phone { max-width: 260px; margin: 0 auto; }
  section { padding: 56px 0; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  nav a:not(.btn) { display: none; }
}

.cta-finale { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.btn-contorno { background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, 0.7); }
.btn-contorno:hover { background: rgba(255, 255, 255, 0.12); color: #fff; }
@media (prefers-color-scheme: dark) {
  .btn-contorno, .btn-contorno:hover { color: var(--ink); border-color: var(--ledger); background: transparent; }
}