:root{
  --accent:#0e7c66;
  --accent-dark:#0a5f4f;
  --ink:#17252b;
  --muted:#5b6b72;
  --bg:#f7f9f8;
  --card:#ffffff;
  --line:#dde5e2;
  --good:#1a7f37;
  --warn:#b7791f;
  --bad:#c0392b;
  --radius:14px;
}
*{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:1.55}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:960px;margin:0 auto;padding:0 18px}
header.site{background:var(--card);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px;flex-wrap:wrap;gap:10px}
.logo{font-weight:800;font-size:1.25rem;color:var(--ink)}
.logo span{color:var(--accent)}
nav.main{display:flex;gap:16px;flex-wrap:wrap;font-size:.95rem}
nav.main a{color:var(--muted);font-weight:600}
nav.main a:hover{color:var(--accent);text-decoration:none}
.hero{padding:44px 0 10px;text-align:center}
.hero h1{font-size:2rem;line-height:1.2;margin-bottom:10px}
.hero p{color:var(--muted);max-width:640px;margin:0 auto}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;padding:30px 0 10px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:box-shadow .15s ease,transform .15s ease}
.card:hover{box-shadow:0 8px 24px rgba(14,124,102,.12);transform:translateY(-2px)}
.card .icon{font-size:1.8rem;margin-bottom:10px}
.card h2{font-size:1.12rem;margin-bottom:8px}
.card h2 a{color:var(--ink)}
.card p{color:var(--muted);font-size:.95rem;margin-bottom:14px}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;padding:10px 18px;border-radius:10px;border:0;cursor:pointer;font-size:.95rem}
.btn:hover{background:var(--accent-dark);text-decoration:none}
.btn.secondary{background:#eef4f2;color:var(--accent-dark)}
.btn.secondary:hover{background:#e0ece9}
main.tool{padding:34px 0 8px}
main.tool h1{font-size:1.7rem;margin-bottom:10px;line-height:1.25}
.intro{color:var(--muted);max-width:720px;margin-bottom:24px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:22px}
label{display:block;font-weight:600;font-size:.92rem;margin:14px 0 6px}
label:first-child{margin-top:0}
input[type=text],input[type=url],input[type=tel],input[type=time],select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:1rem;font-family:inherit;background:#fff;color:var(--ink)}
textarea{resize:vertical;min-height:84px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:640px){.row{grid-template-columns:1fr}.hero h1{font-size:1.55rem}main.tool h1{font-size:1.4rem}}
.output{margin-top:18px}
.output pre{background:#0f222b;color:#d9f2ea;border-radius:10px;padding:16px;overflow-x:auto;font-size:.86rem;line-height:1.5;white-space:pre-wrap;word-break:break-all}
.output .linkbox{background:#eef4f2;border:1px solid var(--line);border-radius:10px;padding:14px;font-size:.95rem;word-break:break-all}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.hint{font-size:.86rem;color:var(--muted);margin-top:8px}
.copied{color:var(--good);font-weight:700;font-size:.9rem;margin-left:8px;display:none}
.meter{margin-top:14px}
.meter .bar{height:10px;background:#e7edeb;border-radius:99px;overflow:hidden;margin-top:6px}
.meter .fill{height:100%;background:var(--good);width:0%;transition:width .15s ease}
.status{font-weight:700;font-size:.92rem}
.status.good{color:var(--good)} .status.warn{color:var(--warn)} .status.bad{color:var(--bad)}
.countline{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px;font-size:.92rem;color:var(--muted)}
section.faq{padding:8px 0 30px}
section.faq h2,section.more h2{font-size:1.25rem;margin:18px 0 12px}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer}
.faq p{color:var(--muted);margin-top:8px;font-size:.95rem}
input[type=file]{width:100%;padding:11px 12px;border:1px dashed var(--line);border-radius:10px;font-size:.95rem;font-family:inherit;background:#fff;color:var(--ink)}
input[type=range]{width:100%;accent-color:var(--accent);margin:6px 0 2px}
table.results{width:100%;border-collapse:collapse;margin-top:14px;font-size:.95rem;background:#fff}
table.results th,table.results td{border:1px solid var(--line);padding:9px 12px;text-align:left}
table.results th{background:#eef4f2}
table.results td.num,table.results th.num{text-align:right;font-weight:700}
canvas.qr{max-width:100%;height:auto;border:1px solid var(--line);border-radius:10px;background:#fff;display:block;margin:0 auto}
.resultlist{margin-top:14px;display:grid;gap:10px}
.resultitem{border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:#eef4f2;font-size:.93rem;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.placeholder{border:1.5px dashed var(--line);border-radius:var(--radius);padding:20px;text-align:center;color:var(--muted);margin:22px 0;font-size:.92rem;background:#fff}
footer.site{border-top:1px solid var(--line);background:var(--card);margin-top:20px}
footer.site .wrap{padding-top:22px;padding-bottom:26px;color:var(--muted);font-size:.9rem}
footer.site .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:14px}
footer.site h3{color:var(--ink);font-size:.95rem;margin-bottom:8px}
footer.site ul{list-style:none}
footer.site li{margin-bottom:5px}