:root{--bg:#f6f8fa;--card:#fff;--ink:#1a2332;--muted:#5b6b7f;--accent:#0b6e4f;--accent2:#0d8a63;--border:#dde4ec;--warn:#b3261e}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
.wrap{max-width:880px;margin:0 auto;padding:16px}
header{background:var(--card);border-bottom:1px solid var(--border)}
header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:12px;padding-bottom:12px}
.logo{font-weight:700;color:var(--accent);text-decoration:none;font-size:1.05rem}
nav a{color:var(--muted);text-decoration:none;margin-left:14px;font-size:.9rem}
nav a:hover{color:var(--accent)}
h1{font-size:1.7rem;margin:22px 0 6px}
.sub{color:var(--muted);margin-bottom:18px;font-size:.98rem}
.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:18px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 16px}
@media(max-width:640px){.grid{grid-template-columns:1fr}}
label{display:block;font-size:.85rem;font-weight:600;margin-bottom:3px}
label span{font-weight:400;color:var(--muted)}
input,select{width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:7px;font-size:1rem;background:#fff}
input:focus{outline:2px solid var(--accent2);border-color:transparent}
.results{margin-top:4px}
.res-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
.stat{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:12px 14px}
.stat .v{font-size:1.35rem;font-weight:700}
.stat .l{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}
.pos{color:var(--accent)}
.neg{color:var(--warn)}
h2{font-size:1.2rem;margin:26px 0 8px}
h3{font-size:1.02rem;margin:14px 0 4px}
p{margin-bottom:10px}
.faq p{color:var(--muted)}
table{width:100%;border-collapse:collapse;font-size:.88rem}
th,td{padding:6px 8px;text-align:right;border-bottom:1px solid var(--border)}
th:first-child,td:first-child{text-align:left}
footer{color:var(--muted);font-size:.8rem;padding:24px 0;text-align:center}
footer a{color:var(--muted)}
.tools-list a{display:block;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:16px 18px;margin-bottom:12px;text-decoration:none;color:var(--ink)}
.tools-list a:hover{border-color:var(--accent2)}
.tools-list .t{font-weight:700;color:var(--accent)}
.tools-list .d{font-size:.9rem;color:var(--muted)}
.note{font-size:.82rem;color:var(--muted);margin-top:10px}

/* buy promo */
.promo{border:2px solid #1F4E5F;border-radius:12px;padding:18px 20px;background:#f4f9fb}
.promo b{font-size:1.08rem;display:block;margin-bottom:6px;color:#12333f}
.promo p{margin:0 0 14px;font-size:.95rem;line-height:1.55}
.buybtn{display:inline-block;background:#1F4E5F;color:#fff !important;text-decoration:none;
  font-weight:700;padding:13px 26px;border-radius:8px;font-size:1.05rem;line-height:1.2}
.buybtn:hover{background:#2b6b81}
.promo-note{display:block;margin-top:10px;font-size:.82rem;color:#5a6b73}
.tipbox{margin-top:10px;font-size:.85rem;word-break:break-all}
@media(max-width:640px){
  .promo{padding:14px 15px}
  .buybtn{display:block;text-align:center;padding:15px 12px}
  .promo b{font-size:1rem}
}
.topcta{margin:-4px 0 18px;padding:10px 14px;background:#eef6f9;border-left:4px solid #1F4E5F;
  border-radius:6px;font-size:.92rem;line-height:1.5}
.topcta a{color:#1F4E5F;font-weight:700}
@media(max-width:640px){.topcta{font-size:.88rem;padding:9px 11px}}