:root{
  /* palette dal logo Saveback®: ciano #00A9E0 + grigio #A8A8AD */
  --blue:#0083bd; --blue-d:#00679a; --blue-xd:#0b2d44;
  --green:#00a9e0; --green-d:#0083bd; --grey:#a8a8ad;
  --ink:#13233a; --muted:#5b6b80; --line:#e3e9f1;
  --bg:#ffffff; --bg-alt:#f4f8fc;
  --r:18px; --shadow:0 18px 50px -20px rgba(0,103,154,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font-family:"Plus Jakarta Sans",system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue)}
h1,h2,h3,h4{line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,4.6vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.7rem,3.2vw,2.6rem);font-weight:800}
h3{font-size:1.2rem;font-weight:700}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.section{padding:clamp(64px,9vw,112px) 0}
.alt{background:var(--bg-alt)}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--green-d);margin-bottom:14px}
.eyebrow::before{content:"+";display:inline-grid;place-items:center;width:18px;height:18px;border-radius:50%;background:var(--green);color:#fff;margin-right:8px;font-size:.85rem;line-height:1}
.eyebrow.light{color:var(--green)}
.sub{font-size:1.1rem;color:var(--muted);max-width:720px;margin:0 0 48px}
.lead{font-size:1.15rem;color:var(--muted);max-width:560px}
.hl-green{color:var(--green-d)}
.muted{color:var(--muted);font-size:.92rem}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--blue);color:#fff;text-decoration:none;font-weight:700;padding:14px 24px;border-radius:999px;border:0;font:inherit;font-weight:700;cursor:pointer;transition:transform .15s,background .15s,box-shadow .15s;box-shadow:0 8px 24px -10px rgba(0,131,189,.7)}
.btn:hover{background:var(--blue-d);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--blue);box-shadow:inset 0 0 0 2px var(--blue)}
.btn-ghost:hover{background:var(--blue);color:#fff}
.btn-green{background:var(--green);color:#06283d;box-shadow:0 8px 24px -10px rgba(0,169,224,.8)}
.btn-green:hover{background:#2fbcec}
.btn-sm{padding:10px 18px;font-size:.92rem}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s}
.nav.scrolled{border-color:var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand img{height:48px;width:auto}
.menu{display:flex;align-items:center;gap:28px}
.menu a:not(.btn){color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem}
.menu a:not(.btn):hover{color:var(--blue)}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;border-radius:2px;transition:.2s}

/* hero */
.hero{padding:clamp(48px,7vw,96px) 0 clamp(64px,8vw,110px);background:
  radial-gradient(900px 500px at 90% 10%,rgba(0,169,224,.16),transparent 60%),
  radial-gradient(800px 600px at 0% 100%,rgba(0,131,189,.10),transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 40px}
.hero-facts{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:28px}
.hero-facts li{display:flex;flex-direction:column;border-left:3px solid var(--green);padding-left:12px}
.hero-facts strong{font-size:1.15rem;color:var(--blue)}
.hero-facts span{font-size:.88rem;color:var(--muted)}

.wallet-demo{position:relative;min-height:440px}
.wallet-card{position:relative;z-index:2;margin:20px auto 0;max-width:360px;border-radius:24px;padding:26px;color:#fff;background:linear-gradient(140deg,var(--blue) 0%,var(--blue-xd) 100%);box-shadow:var(--shadow)}
.wc-top{display:flex;justify-content:space-between;font-weight:600;font-size:.9rem;opacity:.95}
.chip{color:var(--green);font-size:.8rem}
.wc-balance{margin:22px 0 18px}
.wc-balance small{display:block;opacity:.75;font-size:.8rem}
.wc-balance b{font-size:2.6rem;font-weight:800;letter-spacing:-.02em}
.wc-feed{background:rgba(255,255,255,.08);border-radius:14px;padding:6px 14px}
.feed-row{display:flex;align-items:center;gap:10px;padding:10px 0;font-size:.88rem;border-bottom:1px solid rgba(255,255,255,.1)}
.feed-row:last-child{border:0}
.feed-row em{margin-left:auto;font-style:normal;font-weight:700;color:var(--green)}
.dot{width:8px;height:8px;border-radius:50%}.dot.b{background:var(--grey)}.dot.g{background:var(--green)}
.coupon{position:absolute;z-index:3;background:#fff;border-radius:14px;padding:12px 16px 12px 18px;box-shadow:0 14px 34px -12px rgba(11,45,68,.35);display:flex;flex-direction:column;border-left:5px dashed var(--green);animation:float 6s ease-in-out infinite}
.coupon b{color:var(--green-d);font-size:1.2rem}
.coupon span{font-size:.8rem;color:var(--muted)}
.c1{top:0;right:0}
.c2{bottom:40px;left:-10px;animation-delay:-2s}
.c3{bottom:-6px;right:20px;animation-delay:-4s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* band */
.band{background:var(--blue);color:#fff}
.band-in{padding:40px 24px}
.band p{margin:0;font-size:clamp(1.1rem,2vw,1.4rem);text-align:center;max-width:900px;margin:0 auto;font-weight:500}
.band strong{color:#9fe1ff}

/* steps */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.steps li{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px 24px}
.steps li:not(:last-child)::after{content:"→";position:absolute;right:-17px;top:38px;z-index:2;color:var(--green-d);font-weight:800;font-size:1.2rem}
.num{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;font-weight:800;margin-bottom:16px}
.steps li:nth-child(even) .num{background:linear-gradient(135deg,var(--green),var(--green-d))}
.steps p{color:var(--muted);margin:0;font-size:.95rem}
.circle-note{display:flex;gap:18px;align-items:center;margin-top:32px;padding:22px 26px;border-radius:var(--r);background:linear-gradient(90deg,rgba(0,169,224,.16),rgba(0,131,189,.08))}
.cn-ico{flex:none;width:52px;height:52px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;font-size:1.6rem;font-weight:800}
.circle-note p{margin:0}

/* simulator */
.sim-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.sim-ctrl label{display:flex;justify-content:space-between;font-weight:600;margin:22px 0 10px}
.sim-ctrl output{color:var(--blue);font-weight:800}
input[type=range]{width:100%;accent-color:var(--blue);height:6px}
.sim-out{background:#fff;border-radius:24px;padding:32px;box-shadow:var(--shadow)}
.sim-row{display:flex;justify-content:space-between;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--line)}
.sim-row b{font-size:1.3rem}
.sim-row.g b{color:var(--green-d)}
.sim-row.big b{font-size:2.2rem}
.sim-foot{margin:20px 0 0;font-size:.9rem;color:var(--muted)}

/* compare */
.compare{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:stretch}
.col{border-radius:var(--r);padding:32px}
.col h3{font-size:1.5rem}
.col h3 small{display:block;font-size:.85rem;font-weight:600;margin-top:4px;opacity:.75}
.col ul{list-style:none;padding:0;margin:20px 0 0}
.col li{padding:10px 0 10px 32px;position:relative}
.old{background:var(--bg-alt);color:var(--muted)}
.old li::before{content:"✕";position:absolute;left:0;top:10px;color:#c0563f;font-weight:800}
.new{background:linear-gradient(150deg,var(--blue),var(--blue-xd));color:#fff;box-shadow:var(--shadow)}
.new li::before{content:"✓";position:absolute;left:0;top:10px;color:var(--green);font-weight:800}
.new em{color:#9fe1ff}
.vs{align-self:center;font-weight:800;color:var(--muted);font-size:1.2rem}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.pillars div{border-top:3px solid var(--green);padding-top:18px}
.pillars h4{font-size:1.05rem;margin-bottom:6px;color:var(--blue)}
.pillars p{margin:0;color:var(--muted);font-size:.95rem}

/* tabs */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tabs button{font:inherit;font-weight:600;font-size:.93rem;border:1px solid var(--line);background:#fff;color:var(--ink);padding:10px 18px;border-radius:999px;cursor:pointer;transition:.15s}
.tabs button:hover{border-color:var(--blue)}
.tabs button[aria-selected=true]{background:var(--blue);color:#fff;border-color:var(--blue)}
.panel{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;background:#fff;border-radius:24px;padding:40px;border:1px solid var(--line);animation:fade .35s ease}
.panel[hidden]{display:none}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.claim{font-size:1.15rem;font-style:italic;color:var(--blue-d);border-left:3px solid var(--green);padding-left:16px;margin:0 0 20px}
.ticks{list-style:none;padding:0;margin:0}
.ticks li{position:relative;padding:7px 0 7px 30px;color:var(--muted)}
.ticks li::before{content:"+";position:absolute;left:0;top:9px;width:20px;height:20px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;font-weight:800;font-size:.85rem;line-height:1}
.p-num{text-align:center;padding:36px 20px;border-radius:20px;background:linear-gradient(150deg,rgba(0,131,189,.08),rgba(0,169,224,.18))}
.p-num b{display:block;font-size:clamp(2.6rem,5vw,4rem);font-weight:800;color:var(--blue);letter-spacing:-.03em;line-height:1}
.p-num span{display:block;margin-top:10px;color:var(--muted);font-weight:600}

/* cases */
.cases{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.case{background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.case:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.case-img{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case:hover .case-img img{transform:scale(1.03)}
.case-body{padding:26px 28px 30px}
.case-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;font-size:.82rem;color:var(--muted);font-weight:600;margin-bottom:10px}
.live{display:inline-flex;align-items:center;gap:6px;background:rgba(0,169,224,.18);color:var(--green-d);padding:4px 10px;border-radius:999px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:.72rem}
.live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green-d);animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(0,131,189,.6)}100%{box-shadow:0 0 0 8px rgba(0,131,189,0)}}
.mech-tag{display:inline-flex;align-items:center;background:var(--blue);color:#fff;padding:4px 10px;border-radius:999px;font-weight:700;font-size:.72rem;letter-spacing:.02em}
.case h3{font-size:1.5rem}
.case h3 small{display:block;font-size:.95rem;color:var(--blue);font-weight:700;margin-top:4px}
.case p{color:var(--muted);margin:0}
.case strong{color:var(--ink)}

/* features */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat{background:#fff;border-radius:var(--r);padding:28px;border:1px solid var(--line)}
.f-ico{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:rgba(0,131,189,.1);color:var(--blue);font-size:1.3rem;font-weight:800;margin-bottom:16px}
.feat:nth-child(even) .f-ico{background:rgba(0,169,224,.2);color:var(--green-d)}
.feat p{color:var(--muted);margin:0;font-size:.95rem}
.mech{margin-top:32px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:6px 26px}
.mech summary{cursor:pointer;font-weight:700;padding:18px 0;color:var(--blue)}
.mech ol{padding-left:20px;margin:0 0 10px}
.mech li{margin-bottom:10px;color:var(--muted)}
.mech li strong{color:var(--ink)}

/* contact */
.contact{background:linear-gradient(150deg,var(--blue-d),var(--blue-xd));color:#fff}
.contact-box{max-width:760px;text-align:center}
.contact-box .eyebrow{margin-left:auto;margin-right:auto}
.contact-cta{margin:28px 0 4px;font-weight:600;color:#fff!important}
.contact p{color:rgba(255,255,255,.8);font-size:1.08rem}
.mail{display:inline-block;margin-top:4px;color:var(--green);font-weight:800;font-size:clamp(1.5rem,3vw,2rem);text-decoration:none;border-bottom:2px solid transparent}
.mail:hover{border-color:var(--green)}

/* footer */
.foot{padding:40px 0;border-top:1px solid var(--line)}
.foot-in{display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px}
.foot img{height:40px;width:auto}
.foot p{margin:0;font-size:.9rem;color:var(--muted)}
.foot .muted{margin-left:auto}

/* tiers */
.tiers{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tier{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 22px;display:flex;flex-direction:column}
.tier>b{font-size:2.6rem;font-weight:800;letter-spacing:-.03em;line-height:1;color:var(--blue);margin-bottom:14px}
.tier h3{font-size:1.02rem}
.tier p{color:var(--muted);font-size:.92rem;margin:0 0 16px}
.tier .ex{margin-top:auto;font-size:.82rem;font-weight:700;color:var(--blue-d);background:rgba(0,169,224,.1);border-radius:10px;padding:8px 10px}
.tier.hot{background:linear-gradient(160deg,var(--blue),var(--blue-xd));color:#fff;border-color:transparent}
.tier.hot>b{color:#fff}
.tier.hot p{color:rgba(255,255,255,.8)}
.tier.hot .ex{background:rgba(255,255,255,.14);color:#fff}
.tier.custom{border:2px dashed var(--green);background:transparent}
.tier.custom>b{color:var(--green)}
.tier.custom a.ex{text-decoration:none;text-align:center}
.tier.custom a.ex:hover{background:rgba(0,169,224,.2)}
.pct-chips+input[type=range]{margin-top:16px}

/* wallet uses */
.uses{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.use{border-radius:var(--r);padding:28px 24px;background:var(--bg-alt);border:1px solid var(--line)}
.u-ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--blue);color:#fff;font-size:1.3rem;font-weight:800;margin-bottom:18px}
.use p{color:var(--muted);margin:0;font-size:.95rem}
.use.pac{background:linear-gradient(160deg,rgba(0,169,224,.14),rgba(168,168,173,.18));border-color:rgba(0,131,189,.3)}
.use.pac .u-ico{background:var(--blue-xd)}
.note{margin:18px 0 0;font-size:.82rem;color:var(--muted)}

/* simulator chips */
.pct-chips{display:flex;flex-wrap:wrap;gap:8px}
.pct-chips button{font:inherit;font-weight:700;padding:10px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;transition:.15s}
.pct-chips button:hover{border-color:var(--blue)}
.pct-chips button[aria-checked=true]{background:var(--blue);border-color:var(--blue);color:#fff}
.sim-uses{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.sim-uses span{font-size:.78rem;font-weight:700;color:var(--blue-d);background:rgba(0,169,224,.1);padding:5px 10px;border-radius:999px}

/* faq */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-child{border-top:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;font-weight:700;padding:20px 40px 20px 0;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);width:26px;height:26px;border-radius:50%;background:rgba(0,169,224,.12);color:var(--blue);display:grid;place-items:center;font-weight:800;transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq details p{margin:0 0 20px;color:var(--muted)}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}

/* responsive */
@media (max-width:1000px){
  .hero-grid,.sim-grid{grid-template-columns:1fr}
  .wallet-demo{max-width:440px;margin:0 auto;width:100%}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps li::after{display:none}
  .features{grid-template-columns:repeat(2,1fr)}
  .tiers{grid-template-columns:repeat(2,1fr)}
  .uses{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:8px}
}
@media (max-width:860px){
  .burger{display:block}
  .menu{position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 24px 20px;display:none}
  .menu.open{display:flex}
  .menu a:not(.btn){padding:12px 0;border-bottom:1px solid var(--line)}
  .menu .btn{margin-top:14px;justify-content:center}
  .compare{grid-template-columns:1fr}
  .vs{justify-self:center}
  .panel{grid-template-columns:1fr;padding:28px}
  .cases{grid-template-columns:1fr}
  .pillars{grid-template-columns:1fr}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .steps,.features,.uses{grid-template-columns:1fr}
  .tiers{grid-template-columns:1fr 1fr}
  .wallet-demo{min-height:400px}
  .c2{left:0}
  .foot .muted{margin-left:0}
  .tabs{flex-wrap:nowrap;overflow-x:auto;margin-left:-16px;margin-right:-16px;padding:0 16px 6px}
  .tabs button{flex:none}
}

h1 sup{font-size:.5em;vertical-align:top;position:relative;top:.22em;margin-left:.02em;line-height:0;letter-spacing:0}
h1 .pd{margin-left:-.1em}
h1 sup+.pd{margin-left:-.32em}
h1 .nw{white-space:nowrap}