*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#fff;--text:#141414;--muted:#666;--hint:#9a9a9a;--line:#e8e8e8;
  --accent:#1a4d8f;--accent-soft:#eef2f7;
}
html{-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);font-size:15px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
.wrap{max-width:720px;margin:0 auto;padding:0 24px}

header{border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px;gap:20px}
.brand{font-size:14px;font-weight:500;color:var(--text);letter-spacing:-.1px;white-space:nowrap}
.brand:hover{text-decoration:none;color:var(--accent)}
.nav-links{display:flex;gap:22px;font-size:14px}
.nav-links a{color:var(--muted)}
.nav-links a:hover{color:var(--text);text-decoration:none}
.nav-links a.on{color:var(--text)}

main{padding:0 0 80px;min-height:62vh}

h1{font-size:31px;font-weight:500;letter-spacing:-.6px;line-height:1.35}
h2{font-size:18px;font-weight:500;letter-spacing:-.2px}
h3{font-size:16px;font-weight:500}
.lead{color:var(--muted);font-size:15px;margin-top:12px;max-width:520px}

.eyebrow{
  font-size:12.5px;color:var(--hint);letter-spacing:.9px;
  text-transform:none;margin-bottom:14px;display:flex;align-items:center;gap:9px;
}
.eyebrow::before{content:"";width:16px;height:1px;background:var(--hint);display:inline-block}

.hero{padding:74px 0 12px}
.hero h1{max-width:560px}
.hero .lead{max-width:500px;line-height:1.8}

.divider{height:1px;background:var(--line);margin:52px 0}
.divider.tight{margin:32px 0}

.section{margin-top:52px}
.section-head{font-size:12.5px;color:var(--hint);letter-spacing:.9px;margin-bottom:4px}

.tool{
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:21px 0;border-bottom:1px solid var(--line);color:inherit;
}
.tool:last-child{border-bottom:none}
.tool:hover{text-decoration:none}
.tool:hover .tool-name{color:var(--accent)}
.tool-name{font-size:17px;font-weight:500;letter-spacing:-.2px;transition:color .15s}
.tool-desc{font-size:14px;color:var(--muted);margin-top:3px;line-height:1.65}
.tool-right{flex-shrink:0;text-align:right;padding-top:2px}
.tool-price{font-size:14px;color:var(--accent);white-space:nowrap}
.tool-note{font-size:12.5px;color:var(--hint);margin-top:3px}

.btn{
  display:inline-block;background:var(--text);color:#fff;border:1px solid var(--text);
  border-radius:6px;padding:11px 22px;font-size:14.5px;font-weight:400;cursor:pointer;
  font-family:inherit;text-align:center;transition:background .15s;
}
.btn:hover{background:#000;text-decoration:none;color:#fff}
.btn.ghost{background:transparent;color:var(--text);border-color:#d8d8d8}
.btn.ghost:hover{background:#fafafa;color:var(--text);border-color:#bfbfbf}
.btn.accent{background:var(--accent);border-color:var(--accent)}
.btn.accent:hover{background:#153f75;border-color:#153f75}
.btn.block{display:block;width:100%}
.btn:disabled{background:#e5e5e5;border-color:#e5e5e5;color:#999;cursor:not-allowed}
.btn.sm{padding:7px 14px;font-size:13.5px;border-radius:5px}

.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}

.price-row{display:flex;align-items:baseline;gap:12px;margin-top:26px}
.price-big{font-size:26px;font-weight:500;color:var(--accent);letter-spacing:-.5px}
.price-note{font-size:13.5px;color:var(--hint)}

.buy-box{
  border:1px solid var(--line);border-radius:10px;padding:24px 26px;margin-top:30px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}

ul.plain{list-style:none;margin-top:14px}
ul.plain li{padding:7px 0 7px 18px;position:relative;color:var(--muted);font-size:14.5px}
ul.plain li::before{
  content:"";position:absolute;left:2px;top:15px;width:5px;height:1px;background:var(--hint);
}

form.box{border:1px solid var(--line);border-radius:10px;padding:28px 26px;margin-top:26px;max-width:560px}
label{display:block;font-size:13.5px;font-weight:500;margin-bottom:7px}
label .tip{font-weight:400;color:var(--hint);font-size:12.5px;margin-left:6px}
input[type=text],input[type=password],textarea,select{
  width:100%;border:1px solid #dcdcdc;border-radius:6px;padding:10px 12px;
  font-size:14.5px;font-family:inherit;background:#fff;color:var(--text);
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
textarea{font-family:Consolas,Monaco,monospace;font-size:12.5px;line-height:1.65;resize:vertical}
.field{margin-bottom:20px}
.field:last-of-type{margin-bottom:24px}

.msg{border-radius:8px;padding:14px 16px;font-size:14px;margin-top:26px;border:1px solid;line-height:1.65}
.msg.err{background:#fdf3f2;border-color:#f2c9c4;color:#a3271c}
.msg.ok{background:#f2f9f4;border-color:#c3e5cf;color:#186b3d}
.msg.warn{background:#fdf9ef;border-color:#efdfb8;color:#8a5a00}

.licbox{border:1px solid #cfdcec;background:#fbfcfe;border-radius:10px;padding:24px 26px;margin-top:26px}
.licbox textarea{background:#fff;height:132px;margin-top:12px}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:12px}
.meta{font-size:13px;color:var(--hint);line-height:1.7}

table{width:100%;border-collapse:collapse;font-size:14px;margin-top:16px}
th,td{text-align:left;padding:11px 12px 11px 0;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:400;color:var(--hint);font-size:12.5px}
td.mono,th.mono{font-family:Consolas,Monaco,monospace;font-size:12.5px}
td.num{white-space:nowrap}

.faq{margin-top:14px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{padding:15px 0;cursor:pointer;font-size:14.5px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--hint)}
.faq details[open] summary::after{content:"–"}
.faq .answer{padding:0 0 16px;color:var(--muted);font-size:14px;line-height:1.75;max-width:620px}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:20px}
.step .n{font-size:12px;color:var(--hint);letter-spacing:.8px;margin-bottom:7px}
.step h3{margin-bottom:5px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.7}

footer{border-top:1px solid var(--line);padding:30px 0 44px;font-size:13px;color:var(--hint)}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot a{color:var(--muted)}

.tag{display:inline-block;padding:1px 7px;border-radius:4px;font-size:12px;background:#f4f4f4;color:var(--muted)}
.tag.green{background:#f0f8f3;color:#186b3d}
.tag.red{background:#fdf3f2;color:#a3271c}

.admin-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;padding-top:48px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:0;margin-top:34px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:18px 16px 18px 0}
.stat + .stat{border-left:1px solid var(--line);padding-left:16px}
.stat .n{font-size:24px;font-weight:500;line-height:1.25}
.stat .k{font-size:12.5px;color:var(--hint);margin-top:2px}

@media(max-width:680px){
  .wrap{padding:0 20px}
  h1{font-size:26px}
  .hero{padding:52px 0 8px}
  .nav-links{gap:16px;font-size:13.5px}
  .steps{grid-template-columns:1fr;gap:20px}
  .tool{gap:14px}
  .buy-box{padding:20px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .stat + .stat{border-left:none;padding-left:0}
}