:root{
  --bg:#ffffff;
  --soft:#f6f7f9;
  --soft2:#eef0f4;
  --line:#e6e8ee;
  --line2:#dcdfe7;
  --txt:#101117;
  --txt2:#3a3c46;
  --mut:#6b6e7b;
  --mut2:#9498a4;
  --accent:#4f46e5;
  --accent-h:#4338ca;
  --accent-soft:#eef0fe;
  --ok:#16a34a;
  --shadow-sm:0 1px 2px rgba(16,17,23,.06),0 1px 3px rgba(16,17,23,.05);
  --shadow:0 4px 12px rgba(16,17,23,.06),0 12px 28px rgba(16,17,23,.07);
  --shadow-lg:0 8px 24px rgba(16,17,23,.08),0 24px 48px rgba(16,17,23,.10);
  --r:12px;--r-lg:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--txt);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
svg{display:block}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:960px;margin-inline:auto;padding-inline:24px}
.muted{color:var(--mut)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font:inherit;font-weight:600;font-size:15px;line-height:1;
  padding:12px 20px;border-radius:11px;border:1px solid transparent;cursor:pointer;
  transition:background .15s,border-color .15s,transform .12s,box-shadow .15s;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(79,70,229,.35)}
.btn-primary:hover{background:var(--accent-h)}
.btn-ghost{background:#fff;color:var(--txt);border-color:var(--line2)}
.btn-ghost:hover{border-color:var(--mut2);background:var(--soft)}
.btn-sm{padding:9px 14px;font-size:13.5px;border-radius:9px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.78);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.02em}
.brand .logo{
  width:30px;height:30px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,#6366f1,#4f46e5);
  display:grid;place-items:center;box-shadow:0 2px 6px rgba(79,70,229,.35);
}
.brand .logo svg{width:17px;height:17px}
.brand .tld{color:var(--mut)}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{
  color:var(--mut);font-size:14.5px;font-weight:500;padding:8px 12px;border-radius:8px;
  transition:color .15s,background .15s;
}
.nav-links a:hover{color:var(--txt);background:var(--soft)}
.nav-links .sep{width:1px;height:22px;background:var(--line);margin:0 6px}
@media(max-width:680px){.nav-links a.hide-sm,.nav-links .sep{display:none}}

/* ---------- hero ---------- */
.hero{padding:72px 0 24px;text-align:center;position:relative;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(60% 50% at 50% -10%,rgba(99,102,241,.10),transparent 60%),
    radial-gradient(40% 40% at 85% 0%,rgba(168,85,247,.07),transparent 70%);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 13px 6px 10px;border-radius:999px;
  background:#fff;border:1px solid var(--line2);box-shadow:var(--shadow-sm);
  font-size:13px;font-weight:500;color:var(--mut);margin-bottom:26px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(22,163,74,.15)}
.hero h1{
  font-size:clamp(34px,5.6vw,56px);line-height:1.05;letter-spacing:-.04em;font-weight:800;
  margin-bottom:18px;
}
.hero h1 .grad{
  background:linear-gradient(110deg,#6366f1,#a855f7 60%,#ec4899);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lead{font-size:clamp(16px,2.2vw,19px);color:var(--mut);max-width:560px;margin:0 auto}

/* ---------- uploader ---------- */
.uploader{max-width:600px;margin:38px auto 0;text-align:left}
.dropzone{
  display:block;
  background:#fff;border:2px dashed var(--line2);border-radius:var(--r-lg);
  padding:38px 28px;text-align:center;cursor:pointer;box-shadow:var(--shadow);
  transition:border-color .18s,background .18s,box-shadow .18s,transform .18s;
}
.dropzone:hover{border-color:#c3c7d2;box-shadow:var(--shadow-lg)}
.dropzone.drag{border-color:var(--accent);background:var(--accent-soft);transform:scale(1.01)}
.dropzone .glyph{
  width:58px;height:58px;margin:0 auto 16px;border-radius:16px;
  background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;
}
.dropzone .glyph svg{width:28px;height:28px}
.dropzone h2{font-size:18px;font-weight:700;letter-spacing:-.01em;margin-bottom:4px}
.dropzone p{color:var(--mut);font-size:14px;margin-bottom:20px}
.dropzone .formats{
  margin-top:18px;display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;
  color:var(--mut2);font-size:12px;
}
.dropzone .formats b{
  font-weight:600;color:var(--mut);background:var(--soft);border:1px solid var(--line);
  padding:2px 7px;border-radius:6px;font-size:11.5px;
}
input[type=file]{display:none}
.terms{text-align:center;color:var(--mut2);font-size:12.5px;margin-top:16px}
.terms a{color:var(--mut);text-decoration:underline;text-underline-offset:2px}

/* result card */
.result{display:none;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow);overflow:hidden}
.result.show{display:block;animation:rise .25s ease both}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.result .head{display:flex;align-items:center;gap:14px;padding:16px 18px;border-bottom:1px solid var(--line)}
.result .thumb{
  width:60px;height:60px;border-radius:10px;flex:none;background:var(--soft2);
  background-size:cover;background-position:center;border:1px solid var(--line);
}
.result .info{min-width:0;flex:1}
.result .info .fname{font-weight:600;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.result .info .fmeta{color:var(--mut);font-size:12.5px;margin-top:2px;display:flex;gap:10px}
.result .info .fmeta .ok{color:var(--ok);display:inline-flex;align-items:center;gap:4px}
.result .info .fmeta .ok svg{width:13px;height:13px}
.result .reset{margin-left:auto;flex:none}
.result .body{padding:16px 18px;display:flex;flex-direction:column;gap:10px}
.field label{display:block;font-size:11.5px;font-weight:600;letter-spacing:.04em;
  text-transform:uppercase;color:var(--mut2);margin-bottom:5px}
.field .row{display:flex;gap:8px}
.field input{
  flex:1;min-width:0;padding:10px 12px;border:1px solid var(--line2);border-radius:9px;
  background:var(--soft);color:var(--txt2);font-size:13px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.field input:focus{outline:2px solid var(--accent-soft);outline-offset:0;border-color:var(--accent)}
.copybar{display:flex;gap:6px;border-top:1px dashed var(--line);padding-top:12px;margin-top:2px}
.chip{
  flex:1;padding:8px;border:1px solid var(--line2);border-radius:8px;background:#fff;
  font:inherit;font-size:12.5px;font-weight:600;color:var(--mut);cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:6px;transition:.15s;
}
.chip:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.chip.done{color:var(--ok);border-color:var(--ok);background:#f0fdf4}
.chip svg{width:14px;height:14px}

.progress{display:none;padding:18px;align-items:center;gap:14px}
.progress.show{display:flex}
.spinner{width:22px;height:22px;border-radius:50%;border:2.5px solid var(--accent-soft);
  border-top-color:var(--accent);animation:spin .7s linear infinite;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}
.progress .ptext{font-size:14px;color:var(--mut)}
.progress .ptext b{color:var(--txt)}

/* ---------- trust strip ---------- */
.trust{margin-top:40px}
.trust .row{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;color:var(--mut);font-size:13.5px}
.trust .row span{display:inline-flex;align-items:center;gap:7px}
.trust .row svg{width:16px;height:16px;color:var(--ok)}

/* ---------- sections ---------- */
section.block{padding:72px 0;border-top:1px solid var(--line)}
.head{text-align:center;max-width:560px;margin:0 auto 44px}
.head .kicker{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.head h2{font-size:clamp(25px,3.6vw,34px);font-weight:800;letter-spacing:-.03em;margin-bottom:10px}
.head p{color:var(--mut);font-size:16.5px}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{position:relative;padding-top:6px}
.step .n{width:36px;height:36px;border-radius:10px;background:var(--accent-soft);color:var(--accent);
  display:grid;place-items:center;font-weight:700;font-size:15px;margin-bottom:14px}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:5px;letter-spacing:-.01em}
.step p{color:var(--mut);font-size:14.5px}
@media(max-width:680px){.steps{grid-template-columns:1fr;gap:26px}}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;
  box-shadow:var(--shadow-sm);transition:box-shadow .18s,transform .18s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.card .ic{width:42px;height:42px;border-radius:11px;background:var(--accent-soft);color:var(--accent);
  display:grid;place-items:center;margin-bottom:15px}
.card .ic svg{width:21px;height:21px}
.card h3{font-size:16px;font-weight:700;margin-bottom:6px;letter-spacing:-.01em}
.card p{color:var(--mut);font-size:14px;line-height:1.55}
@media(max-width:820px){.cards{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.cards{grid-template-columns:1fr}}

.faq{max-width:680px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:var(--r);background:#fff;margin-bottom:10px;
  box-shadow:var(--shadow-sm);overflow:hidden}
.faq summary{cursor:pointer;font-weight:600;font-size:15.5px;padding:17px 20px;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";width:10px;height:10px;flex:none;border-right:2px solid var(--mut2);
  border-bottom:2px solid var(--mut2);transform:rotate(45deg);margin-top:-3px;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(-135deg);margin-top:3px}
.faq .ans{padding:0 20px 18px;color:var(--mut);font-size:14.5px;line-height:1.6}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--soft);padding:44px 0 36px}
.foot-top{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;margin-bottom:30px}
.foot-top .about{max-width:300px}
.foot-top .about .brand{margin-bottom:12px}
.foot-top .about p{color:var(--mut);font-size:14px}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.foot-col h4{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--mut2);margin-bottom:13px}
.foot-col a{display:block;color:var(--mut);font-size:14px;margin-bottom:9px;transition:color .15s}
.foot-col a:hover{color:var(--txt)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  border-top:1px solid var(--line);padding-top:22px;color:var(--mut2);font-size:13px}
.foot-bottom .badges{display:flex;gap:14px}
.foot-bottom .badges span{display:inline-flex;align-items:center;gap:6px}
.foot-bottom .badges svg{width:14px;height:14px}

/* ---------- 404 ---------- */
.errpage{min-height:calc(100vh - 64px);display:grid;place-items:center;text-align:center;padding:60px 24px}
.errpage .code{font-size:clamp(80px,16vw,150px);font-weight:800;letter-spacing:-.05em;line-height:1;
  background:linear-gradient(135deg,#6366f1,#a855f7);-webkit-background-clip:text;background-clip:text;color:transparent}
.errpage h1{font-size:clamp(22px,4vw,30px);font-weight:800;letter-spacing:-.02em;margin:14px 0 10px}
.errpage p{color:var(--mut);font-size:16px;max-width:420px;margin:0 auto 28px}
.errpage .actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}