:root{--brand:#0d9488;--brand-dark:#0f766e;--ink:#134e4a;--muted:#5f7a76;--bg:#f0fdfa;--card:#fff;--line:#ccfbf1}
*{box-sizing:border-box;margin:0;padding:0}
body{font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
.wrap{max-width:900px;margin:0 auto;padding:0 20px}
a{color:var(--brand-dark);text-decoration:none}a:hover{text-decoration:underline}
.site-header{background:#fff;border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;justify-content:space-between;align-items:center;height:56px}
.logo{font-weight:800;font-size:22px;color:var(--brand-dark)}
.main-nav a{margin-left:18px;font-size:14.5px;color:var(--muted)}
.hero{padding:44px 0 20px;text-align:center}
.hero h1{font-size:clamp(26px,4.5vw,38px)}
.hero .sub{color:var(--muted);margin:12px auto 0;max-width:540px}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;margin-top:26px;text-align:left}
.field-label{font-size:13.5px;font-weight:700;color:var(--muted);display:block;margin-bottom:8px}
textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px;font:15px/1.6 inherit;resize:vertical;background:#fff}
textarea:focus{outline:2px solid var(--brand);border-color:transparent}
.opts{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
select{border:1px solid var(--line);border-radius:8px;padding:10px;background:#fff;font:14px inherit}
.btn{background:var(--brand);color:#fff;border:none;border-radius:10px;padding:12px 20px;font:600 15px inherit;cursor:pointer}
.btn:hover{background:var(--brand-dark)}
.btn.ghost{background:#fff;color:var(--brand-dark);border:1px solid var(--line)}
.btn.big{padding:14px 26px;font-size:16.5px}
.counter{margin-top:8px;font-size:13px;color:#16a34a;font-weight:600}
.output{margin-top:18px;border-top:1px solid var(--line);padding-top:16px}
.guide{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;min-height:100px;line-height:1.8}
.guide h3{color:var(--brand-dark);margin:14px 0 6px;font-size:17px}
.guide dl{margin:8px 0}
.guide dt{font-weight:700;margin-top:8px}
.guide dd{margin-left:20px;color:var(--muted)}
.out-actions{display:flex;gap:10px;margin-top:14px}
.paywall{margin-top:18px;border-top:1px solid var(--line);padding-top:16px;text-align:center}
.paywall h2{font-size:20px}
.paywall p{color:var(--muted);margin:8px 0}
.section{padding:40px 0}
.section h2{font-size:23px;margin-bottom:14px}
.section h3{font-size:17px;margin:14px 0 6px}
.section p{margin-bottom:12px;max-width:720px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:18px 0}
@media(max-width:700px){.grid2{grid-template-columns:1fr}}
.faq details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:8px;background:#fff}
.faq summary{font-weight:700;cursor:pointer}
.faq p{margin:10px 0 0;color:var(--muted)}
.site-footer{background:#134e4a;color:#99f6e4;padding:32px 0;margin-top:28px;font-size:14px}
.site-footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:24px}
.site-footer .logo{color:#fff}
.site-footer a{color:#99f6e4;display:inline-block;margin:4px 0}
@media(max-width:700px){.site-footer .cols{grid-template-columns:1fr}}
@media print{.site-header,.hero .sub,.tool-card textarea,.opts,.counter,.out-actions,.site-footer,.paywall{display:none!important}.hero{padding:0}.guide{border:none}}