:root{
  --bg:#f7f8fb;
  --card:#ffffff;
  --text:#172033;
  --muted:#637083;
  --line:#e6e9ef;
  --brand:#4f46e5;
  --brand2:#7c3aed;
  --good:#0f9d58;
  --shadow:0 10px 30px rgba(26,34,56,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.55}
a{color:inherit;text-decoration:none}
.container{width:min(1120px,92%);margin:auto}
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{font-size:1.45rem;font-weight:900;letter-spacing:-.04em}
.logo span{background:linear-gradient(90deg,var(--brand),var(--brand2));-webkit-background-clip:text;color:transparent}
.navlinks{display:flex;gap:18px;color:var(--muted);font-weight:700;font-size:.95rem}
.hero{padding:80px 0 44px;text-align:center}
.badge{display:inline-flex;gap:8px;align-items:center;padding:8px 12px;border-radius:999px;background:#eef2ff;color:#4338ca;font-weight:800;font-size:.85rem}
h1{font-size:clamp(2.2rem,6vw,4.7rem);line-height:1.02;letter-spacing:-.055em;margin:18px auto;max-width:920px}
.hero p{font-size:1.15rem;color:var(--muted);max-width:720px;margin:0 auto 26px}
.cta{display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;padding:13px 20px;border-radius:12px;font-weight:800;box-shadow:var(--shadow)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:24px 0 70px}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 5px 16px rgba(26,34,56,.04);transition:.2s}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfd5e2}
.tool-card .icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:#eef2ff;margin-bottom:16px;font-weight:900;color:#4f46e5}
.tool-card h3{margin:0 0 8px;font-size:1.1rem}
.tool-card p{margin:0;color:var(--muted);font-size:.95rem}
.section-title{font-size:2rem;letter-spacing:-.04em;margin:0 0 6px}
.section-sub{color:var(--muted);margin:0 0 18px}
.tool-shell{padding:48px 0 80px}
.breadcrumb{font-size:.9rem;color:var(--muted);margin-bottom:12px}
.tool-shell h1{font-size:clamp(2rem,5vw,3.4rem);text-align:left;margin:8px 0 10px;max-width:850px}
.lead{color:var(--muted);font-size:1.08rem;max-width:800px}
.panel{margin-top:28px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow)}
textarea,input,select{width:100%;font:inherit;border:1px solid #d9deea;background:#fff;color:var(--text);border-radius:12px;padding:13px 14px;outline:none}
textarea{min-height:170px;resize:vertical}
textarea:focus,input:focus,select:focus{border-color:#818cf8;box-shadow:0 0 0 3px #eef2ff}
label{display:block;font-weight:800;margin:12px 0 7px}
.row{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.row3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
button{appearance:none;border:0;border-radius:11px;padding:11px 15px;font:inherit;font-weight:800;cursor:pointer;background:#eef2ff;color:#4338ca}
button.primary{background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff}
button.secondary{background:#f2f4f8;color:#273149}
button.success{background:#e9f8ef;color:#087a42}
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:18px}
.stat{background:#f8faff;border:1px solid var(--line);border-radius:14px;padding:14px}
.stat b{display:block;font-size:1.45rem}
.stat span{font-size:.82rem;color:var(--muted)}
.output{margin-top:18px;padding:16px;border:1px dashed #cfd5e2;border-radius:14px;background:#fafbfe;min-height:60px}
.result-list{display:grid;gap:10px;margin-top:18px}
.result-item{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);border-radius:14px;padding:13px 14px;background:#fff}
.result-item .txt{font-size:1.12rem;overflow-wrap:anywhere}
.copy-btn{white-space:nowrap}
.table-wrap{overflow:auto;margin-top:16px}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line)}
th{font-size:.85rem;color:var(--muted);background:#fafbfe}
.kicker{font-size:.84rem;color:#4338ca;font-weight:900;text-transform:uppercase;letter-spacing:.08em}
.note{margin-top:14px;color:var(--muted);font-size:.9rem}
.adslot{margin:26px 0;border:1px dashed #cfd5e2;border-radius:14px;min-height:92px;display:grid;place-items:center;color:#9aa3b3;background:#fbfcfe;font-size:.85rem}
.content{margin-top:30px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}
.content h2{letter-spacing:-.03em}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{padding:8px 11px;border-radius:999px;background:#f1f5f9;border:1px solid var(--line);font-size:.9rem}
footer{border-top:1px solid var(--line);background:#fff;padding:30px 0;color:var(--muted)}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.checkbox-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:10px}
.checkbox-row label{display:flex;gap:7px;align-items:center;margin:0;font-weight:700}
.checkbox-row input{width:auto}
.canvas-wrap{display:grid;place-items:center;padding:18px}
#qrCanvas{max-width:100%;height:auto}
@media(max-width:850px){.grid{grid-template-columns:repeat(2,1fr)}.stats{grid-template-columns:repeat(2,1fr)}.row,.row3{grid-template-columns:1fr}.navlinks{display:none}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.hero{padding-top:54px}.panel{padding:16px}.tool-shell{padding-top:32px}}