:root{
  --font:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --bg:#eef5fb;--surface:#fff;--surface-2:#f4f8fc;
  --text:#0b1b32;--soft:#566a82;--border:#dbe7f4;
  --blue:#0057b8;--blue-deep:#003f86;--navy:#061a33;--deep:#031225;
  --green:#4e9e28;--green-b:#63bd32;--lime:#7bd742;--green-soft:#eaf6df;
  --red:#e0483b;--red-soft:#fde7e4;--amber:#e8a13a;--amber-soft:#fbf0da;
  --shadow:0 18px 50px -22px rgba(6,26,51,.28);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
.wrap{max-width:1080px;margin:0 auto;padding:0 28px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

header{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);background:rgba(255,255,255,.94);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo img{height:44px}
.nav a.site{font-weight:700;font-size:14px;color:var(--soft)}
.nav a.site:hover{color:var(--blue)}

.hero{position:relative;padding:56px 0 40px;text-align:center;background:radial-gradient(60% 70% at 50% 0,rgba(0,87,184,.09),transparent 60%),radial-gradient(50% 60% at 90% 100%,rgba(99,189,50,.10),transparent 60%)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);background:var(--surface);border:1px solid var(--border);padding:8px 16px;border-radius:999px;margin-bottom:22px}
.eyebrow b{color:var(--green)}
h1{font-size:clamp(2.1rem,4.6vw,3.5rem);line-height:1.05;font-weight:900;letter-spacing:-.03em;margin-bottom:16px}
h1 .hl{color:var(--green)}
.hero .sub{font-size:clamp(1.05rem,1.5vw,1.25rem);color:var(--soft);max-width:560px;margin:0 auto 28px;font-weight:500}
.hero .sub b{color:var(--text);font-weight:700}

.scanbox{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:12px;box-shadow:var(--shadow);max-width:620px;margin:0 auto;display:flex;gap:10px}
@media(max-width:560px){.scanbox{flex-direction:column}}
.scanbox input{flex:1;font-family:inherit;font-size:17px;font-weight:600;color:var(--text);background:var(--bg);border:1.5px solid var(--border);border-radius:12px;padding:15px 18px}
.scanbox input::placeholder{color:var(--soft);font-weight:500}
.scanbox input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,87,184,.16)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:800;font-size:16px;padding:15px 26px;border-radius:12px;cursor:pointer;border:none;transition:.2s;font-family:inherit;white-space:nowrap}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 12px 28px -12px var(--blue)}
.btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px)}
.btn-primary:disabled{opacity:.65;cursor:default;transform:none}
.btn-lg{font-size:17px;padding:17px 32px}
.trust{margin-top:16px;font-size:14px;color:var(--soft);font-weight:600}
.trust b{color:var(--green)}
.err{color:var(--red);font-weight:700;font-size:14px;margin-top:14px;min-height:18px}

/* scanning state */
.scanning{max-width:620px;margin:34px auto 0;display:none}
.scanning.on{display:block}
.scan-url{text-align:center;font-weight:800;font-size:15px;color:var(--navy);margin-bottom:6px;word-break:break-all}
.scan-status{text-align:center;color:var(--soft);font-weight:600;font-size:14px;margin-bottom:20px}
.checks{display:grid;gap:10px}
.chk{display:flex;align-items:center;gap:13px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 18px;font-weight:700;font-size:15px;color:var(--soft);opacity:.5;transition:.4s}
.chk.active{opacity:1;color:var(--text);border-color:rgba(0,87,184,.3)}
.chk.done{opacity:1;color:var(--text)}
.chk .dot{width:20px;height:20px;flex:none;border-radius:50%;border:2.5px solid var(--border);position:relative}
.chk.active .dot{border-color:var(--blue);animation:spin .8s linear infinite;border-right-color:transparent}
.chk.done .dot{border-color:var(--green-b);background:var(--green-b)}
.chk.done .dot::after{content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;border:solid #fff;border-width:0 2.5px 2.5px 0;transform:rotate(45deg)}
@keyframes spin{to{transform:rotate(360deg)}}

/* results */
.results{display:none;padding:20px 0 40px}
.results.on{display:block}
.gradecard{background:linear-gradient(135deg,var(--navy),var(--deep));color:#fff;border-radius:22px;padding:34px;display:flex;align-items:center;gap:30px;box-shadow:var(--shadow);margin-bottom:26px}
@media(max-width:620px){.gradecard{flex-direction:column;text-align:center;gap:18px;padding:28px}}
.gradebig{flex:none;width:118px;height:118px;border-radius:24px;display:grid;place-items:center;font-size:58px;font-weight:900;line-height:1}
.gradebig.g{background:linear-gradient(135deg,var(--lime),var(--green))}
.gradebig.a{background:linear-gradient(135deg,#f4b860,var(--amber))}
.gradebig.r{background:linear-gradient(135deg,#ff7a6e,var(--red))}
.gradetext h2{font-size:1.7rem;font-weight:900;letter-spacing:-.02em;margin-bottom:6px}
.gradetext p{color:#c3d6ea;font-weight:500;font-size:15.5px;max-width:460px}
.gradetext .scorenum{color:var(--lime);font-weight:800}
.gradeon{margin-left:auto;text-align:right;font-size:13px;color:#9fc0dc;font-weight:600}
@media(max-width:620px){.gradeon{margin:0}}

.cardgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:680px){.cardgrid{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--border);border-left-width:5px;border-radius:14px;padding:19px 21px}
.card.good{border-left-color:var(--green-b)}
.card.warn{border-left-color:var(--amber)}
.card.bad{border-left-color:var(--red)}
.card .ch{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:7px}
.card h3{font-size:16px;font-weight:800;letter-spacing:-.01em}
.badge{font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.05em;padding:3px 10px;border-radius:20px}
.badge.good{background:var(--green-soft);color:var(--green)}
.badge.warn{background:var(--amber-soft);color:#8a5b12}
.badge.bad{background:var(--red-soft);color:#b93124}
.card p{color:var(--soft);font-size:14px;font-weight:500;line-height:1.5}
.card p b{color:var(--text);font-weight:700}
.card .cwv{display:flex;gap:16px;margin-top:9px;flex-wrap:wrap}
.card .cwv span{font-size:12.5px;color:var(--soft);font-weight:700}
.card .cwv span b{color:var(--text)}

/* results CTA */
.rescta{margin-top:26px;background:linear-gradient(120deg,#071b34,#03101f);color:#fff;border-radius:22px;padding:38px 34px;text-align:center}
.rescta h2{font-size:1.7rem;font-weight:900;letter-spacing:-.02em;margin-bottom:8px}
.rescta h2 .hl{color:var(--lime)}
.rescta p{color:#bed1e2;font-size:16px;max-width:520px;margin:0 auto 22px;font-weight:500}
.rescta .btn-primary{background:linear-gradient(135deg,var(--green-b),#4a9f26);box-shadow:0 12px 28px -12px var(--green)}
.rescta .btn-primary:hover{filter:brightness(1.06)}
.rescta small{display:block;margin-top:14px;color:#8fb0cd;font-weight:600;font-size:13px}
.rescan{display:inline-block;margin-top:18px;color:var(--blue);font-weight:800;font-size:14px;cursor:pointer}

/* how it works */
.how{border-top:1px solid var(--border);padding:44px 0;text-align:center}
.how h2{font-size:1.5rem;font-weight:800;letter-spacing:-.02em;margin-bottom:26px}
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;text-align:left}
@media(max-width:760px){.how-grid{grid-template-columns:1fr}}
.hstep{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px 22px}
.hstep .n{width:34px;height:34px;border-radius:10px;background:var(--blue);color:#fff;font-weight:800;display:grid;place-items:center;margin-bottom:12px}
.hstep:nth-child(2) .n{background:var(--green-b)}
.hstep:nth-child(3) .n{background:var(--navy)}
.hstep h3{font-size:1.05rem;font-weight:800;margin-bottom:4px}
.hstep p{color:var(--soft);font-size:14px;font-weight:500}

footer{border-top:1px solid var(--border);padding:40px 0 34px;text-align:center;color:var(--soft);background:var(--surface-2)}
footer .logo{display:inline-block;margin-bottom:12px}
footer .ftag{max-width:520px;margin:0 auto 18px;font-size:14.5px;font-weight:500;line-height:1.55;color:var(--soft)}
footer .fnav{display:flex;gap:10px 22px;justify-content:center;flex-wrap:wrap;font-weight:700;font-size:14px;margin-bottom:14px;color:var(--text)}
footer .fnav a:hover{color:var(--blue)}
footer small{font-size:13px;color:#8ea3ba}