:root{--bg:#f7f8fa;--card:#fff;--ink:#16202a;--muted:#5b6773;--accent:#0f6b5c;--accent-dark:#0a4f44;--line:#dde2e8;--sans:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans)}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-999px;top:8px;background:var(--card);padding:8px 12px;z-index:20}
.skip:focus{left:8px}
[hidden]{display:none!important}

.top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 5vw;background:var(--card);border-bottom:1px solid var(--line)}
.brand{font-weight:700;font-size:20px;letter-spacing:-.01em;text-decoration:none;color:var(--accent-dark)}
.langmenu{position:relative}
.langmenu summary{cursor:pointer;list-style:none;padding:6px 12px;border:1px solid var(--line);border-radius:6px;font-size:14px;font-weight:600}
.langmenu summary::-webkit-details-marker{display:none}
.langmenu ul{position:absolute;right:0;margin:6px 0 0;padding:6px;list-style:none;background:var(--card);border:1px solid var(--line);border-radius:8px;min-width:150px;box-shadow:0 8px 24px #0001;z-index:10}
.langmenu a{display:block;padding:7px 10px;border-radius:4px;text-decoration:none;color:var(--ink)}
.langmenu a:hover,.langmenu a[aria-current]{background:var(--bg)}

main{max-width:820px;margin:0 auto;padding:32px 5vw 56px}
h1{margin:6px 0 10px;font-size:clamp(28px,5vw,40px);line-height:1.15;letter-spacing:-.02em}
h2{font-size:20px;margin:0 0 12px}
h3{font-size:17px;margin:20px 0 4px}
.lead{margin:0 0 24px;color:var(--muted);font-size:18px}
.crumbs{font-size:14px;color:var(--muted)}
.crumbs a{color:var(--muted)}

.tool,.cards a{background:var(--card);border:1px solid var(--line);border-radius:12px}
.tool{padding:24px;display:grid;gap:16px}
.field{display:grid;gap:6px;border:0;margin:0;padding:0;font-weight:600}
.field span,.field legend{font-size:14px;color:var(--muted)}
.field input[type=text]{width:100%;padding:12px;border:1px solid #b9c2cc;border-radius:8px;font:inherit;background:#fff}
.field select{width:100%;padding:12px;border:1px solid #b9c2cc;border-radius:8px;font:inherit;background:#fff;color:var(--ink)}
.field input[type=range]{width:100%;accent-color:var(--accent)}
.radio{display:flex;align-items:center;gap:8px;font-weight:400;padding:3px 0}
.pw{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:18px}
.group{display:grid;gap:12px;padding:0 0 20px;border-bottom:1px solid var(--line)}
.group:last-child{border-bottom:0;padding-bottom:0}
.error{margin:0;padding:10px 12px;background:#fdecea;color:#8a1c12;border-radius:8px}
.results{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:0}
.results div{background:var(--bg);border-radius:8px;padding:12px 14px}
.results dt{font-size:13px;color:var(--muted)}
.results dd{margin:2px 0 0;font-size:22px;font-weight:700;overflow-wrap:anywhere}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{padding:12px 20px;border:0;border-radius:8px;background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer}
.btn:hover{background:var(--accent-dark)}
.btn-ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn-ghost:hover{background:#0f6b5c14}

.note{margin:14px 0 0;font-size:14px;color:var(--muted)}
.ad-slot{margin:24px 0;min-height:90px}
.faq{margin-top:40px}
.others ul{display:flex;gap:10px;flex-wrap:wrap;list-style:none;padding:0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;list-style:none;padding:0;margin:24px 0 0}
.cards a{display:block;height:100%;padding:20px;text-decoration:none;color:var(--ink)}
.cards a:hover{border-color:var(--accent)}
.cards strong{display:block;font-size:18px;margin-bottom:4px}
.cards span{color:var(--muted);font-size:15px}
.langpick{list-style:none;padding:0;display:grid;gap:10px;max-width:300px}
.langpick a{display:block;padding:14px 18px;background:var(--card);border:1px solid var(--line);border-radius:10px;text-decoration:none;font-weight:600}

footer{border-top:1px solid var(--line);padding:22px 5vw;font-size:14px;color:var(--muted);text-align:center}
footer p{margin:4px 0}