@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--ink:#17191d;--muted:#626872;--line:#e5e7eb;--soft:#f6f7f8;--accent:#202226;--green:#16834a}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;color:var(--ink);font-family:'DM Sans',Arial,sans-serif;background:radial-gradient(ellipse at 85% 10%,#f1f2f4,transparent 35%),#fbfbfc}
.site-header{height:90px;padding:15px 6.5%;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.92);border-bottom:1px solid var(--line)}
.brand img{width:285px;max-height:62px;object-fit:contain;object-position:left center}
.header-link{font-size:10px;letter-spacing:1.5px;font-weight:800;color:#282b30;text-decoration:none;padding:13px 18px;border-radius:30px;background:#f0f1f2}
.header-link span{margin-left:8px}
main{max-width:1240px;margin:auto;padding:75px 6.5% 55px}
.hero{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:65px;min-height:500px}
.eyebrow{display:flex;align-items:center;gap:10px;font-size:10px;letter-spacing:2.5px;font-weight:800;color:#4e535b}
.eyebrow span{height:2px;width:38px;background:#26292e}
h1{font:800 clamp(44px,5.2vw,68px)/1.08 Manrope,sans-serif;letter-spacing:-2.8px;margin:24px 0 18px;color:#17191d}
.intro{max-width:470px;color:var(--muted);font-size:15px;line-height:1.8;margin:0}
.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:48px;max-width:510px}
.benefit{display:flex;flex-direction:column;gap:10px;padding-right:12px;border-right:1px solid #d8dade}
.benefit:last-child{border:0}
.benefit-icon{width:36px;height:36px;display:grid;place-items:center;border:1px solid #dfe1e4;border-radius:10px;background:#fff;font-size:19px;color:#24272c}
.benefit strong{font:800 12px Manrope,sans-serif}
.benefit p{margin:3px 0 0;color:#747a83;font-size:10px;line-height:1.5}
.verify-card{position:relative;padding:34px;background:rgba(255,255,255,.96);border:1px solid #e3e5e8;border-radius:22px;box-shadow:0 22px 55px rgba(20,24,32,.08);max-width:550px;width:100%}
.card-brand{text-align:center;margin-bottom:30px}
.card-brand img{display:block;width:120px;height:58px;object-fit:contain;margin:0 auto 7px}
.card-brand h2{font:800 20px Manrope,sans-serif;margin:0 0 5px}
.card-brand p{margin:0;color:var(--muted);font-size:12px}
label{display:block;font-size:10px;letter-spacing:2px;font-weight:800;color:#42464d;margin-bottom:11px}
input{width:100%;height:60px;border:1px solid #cdd1d6;background:#fcfcfd;border-radius:10px;padding:0 18px;color:#17191d;font:700 21px Manrope,sans-serif;letter-spacing:7px;text-transform:uppercase;outline:none}
input:focus{border-color:#555b64;box-shadow:0 0 0 3px rgba(50,55,65,.08)}
input::placeholder{color:#a1a5ab;letter-spacing:5px}
button{margin-top:15px;width:100%;height:56px;border:0;border-radius:10px;background:#202226;color:#fff;font-weight:800;font-size:12px;letter-spacing:1.5px;cursor:pointer}
button span{font-size:20px;margin-left:10px}
button:hover{background:#383c42}
.result{margin-top:18px;padding:15px;border-radius:10px;border:1px solid}
.result strong{font-size:11px;letter-spacing:1px}
.result p{font-size:12px;line-height:1.55;margin:7px 0 0}
.result small{display:block;margin-top:8px;line-height:1.5}
.result.valid{background:#eef8f1;border-color:#c4e2ce;color:#17683b}
.result.valid small{color:#39744d}
.result.invalid,.result.error{background:#fbf0ef;border-color:#ecd0cc;color:#9e3930}
.card-note{text-align:center;margin-top:18px;font-size:10px;color:#747982}
.card-note span{color:#16834a;margin-right:5px}
.feature-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:75px -6.5% 0;padding:27px 6.5%;background:#f3f4f5;border-top:1px solid #e6e7e9;border-bottom:1px solid #e6e7e9}
.feature-strip>div{display:flex;align-items:center;justify-content:center;gap:14px;border-right:1px solid #d5d8dc}
.feature-strip>div:last-child{border:0}
.feature-symbol{font-size:29px;color:#33383e}
.feature-strip strong{font:800 13px Manrope,sans-serif}
.feature-strip p{margin:4px 0 0;font-size:11px;color:#727780}
footer{background:#fff;border-top:1px solid var(--line);padding:25px 20px 30px;text-align:center;color:#777d86}
footer img{width:190px;max-height:48px;object-fit:contain}
footer p{font-size:11px;margin:12px 0 5px}
footer small{font-size:10px}
@media(max-width:850px){main{padding:50px 5% 40px}.hero{grid-template-columns:1fr;gap:38px}.hero-copy{max-width:650px}.verify-card{max-width:100%}.feature-strip{margin-left:-5%;margin-right:-5%;padding-left:5%;padding-right:5%}}
@media(max-width:600px){
.site-header{height:74px;padding:11px 17px}.brand img{width:205px;max-height:48px}.header-link{font-size:8px;padding:10px 11px;letter-spacing:1px}
main{padding:42px 18px 35px}.hero{gap:28px}h1{font-size:43px;letter-spacing:-2px;margin:18px 0 14px}.intro{font-size:13px}
.benefits{gap:7px;margin-top:28px}.benefit{padding-right:7px;gap:8px}.benefit-icon{width:32px;height:32px;font-size:17px}.benefit strong{font-size:10px}.benefit p{font-size:9px}
.verify-card{padding:23px 18px;border-radius:16px}.card-brand{margin-bottom:24px}.card-brand img{width:105px;height:48px}.card-brand h2{font-size:18px}.card-brand p{font-size:11px}
input{height:55px;font-size:19px;letter-spacing:6px}button{height:53px}
.feature-strip{grid-template-columns:1fr;gap:14px;margin-top:45px;padding-top:21px;padding-bottom:21px}.feature-strip>div{justify-content:flex-start;border-right:0;border-bottom:1px solid #d9dce0;padding:0 0 12px}.feature-strip>div:last-child{border:0;padding-bottom:0}.feature-symbol{font-size:25px}
}