:root{--bg:#f4f6fb;--ink:#0f1630;--mute:#5b6485;--card:#ffffff;--line:#e2e6f2;--a:#4f46e5;--b:#06b6d4;--ok:#16a34a;--bad:#dc2626;--r:20px;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
@media (prefers-color-scheme:dark){:root{--bg:#0a0f24;--ink:#eef1ff;--mute:#9aa4cc;--card:#121a38;--line:#222c52}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.5;background-image:radial-gradient(60rem 30rem at 10% -10%,rgba(79,70,229,.18),transparent),radial-gradient(50rem 28rem at 100% 0,rgba(6,182,212,.16),transparent);background-repeat:no-repeat}
.wrap{max-width:1040px;margin:0 auto;padding:20px}
nav{display:flex;justify-content:space-between;align-items:center;padding:8px 0}
.logo{font-weight:800;font-size:1.3rem;letter-spacing:-.03em}
.hero{padding:48px 0 28px}.hero h1{font-size:clamp(2.2rem,7vw,4.2rem);line-height:1.02;letter-spacing:-.04em;margin:0 0 14px;max-width:14ch;background:linear-gradient(120deg,var(--a),var(--b));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--mute);max-width:46ch;margin:0}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;backdrop-filter:blur(10px)}
.card h3{margin:0 0 4px;font-size:1.1rem}.price{font-weight:800;font-size:1.3rem;margin:8px 0}.mute{color:var(--mute);font-size:.9rem}
.btn{font:600 1rem inherit;font-family:inherit;border:0;cursor:pointer;color:#fff;background:linear-gradient(120deg,var(--a),var(--b));padding:12px 18px;border-radius:14px;min-height:46px}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}.btn:disabled{opacity:.5;cursor:not-allowed}
.btn:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--b);outline-offset:2px}
input,textarea{width:100%;font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px;margin:6px 0 12px}
label{font-size:.9rem;color:var(--mute)}
dialog{border:1px solid var(--line);border-radius:var(--r);background:var(--card);color:var(--ink);max-width:440px;width:calc(100% - 32px);padding:22px}
dialog::backdrop{background:rgba(5,8,20,.6);backdrop-filter:blur(4px)}
.row{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:8px 0;border-bottom:1px solid var(--line)}
.qr{display:block;margin:12px auto;width:240px;max-width:100%;background:#fff;padding:10px;border-radius:14px}
.err{color:var(--bad);min-height:1.4em}.ok{color:var(--ok);font-weight:700}
table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}
.tbl{overflow-x:auto}.stats{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin:16px 0}
.stats b{font-size:1.5rem;display:block}.badge{padding:3px 10px;border-radius:99px;background:var(--line);font-size:.8rem}
.narrow{max-width:380px;margin:40px auto}[hidden]{display:none!important}