:root{--primary:#176e96;--primary-dark:#105778;--ink:#142d3b;--muted:#526777;--border:#d9e4eb;--canvas:#f5f8fa}
*{box-sizing:border-box}body{margin:0;background:var(--canvas);color:var(--ink);font-family:Tahoma,"Segoe UI",Arial,sans-serif;line-height:1.65}a{color:var(--primary)}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid #c37600;outline-offset:4px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.skip-link{position:absolute;top:-100px;background:white;padding:12px;z-index:100}.skip-link:focus{top:0}
.site-nav{max-width:1120px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 24px;border-bottom:1px solid var(--border)}.site-brand{font-size:23px;font-weight:800;text-decoration:none;white-space:nowrap}.site-brand span{color:var(--muted)}.site-brand small{font-size:12px;font-weight:500;margin-inline-start:8px}.language-links{display:flex;gap:4px}.language-links a{padding:9px 12px;border-radius:10px;text-decoration:none;font-size:14px}.language-links a[aria-current]{background:var(--primary);color:white}.site-footer{max-width:1000px;margin:48px auto 0;padding:26px 24px 36px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;color:var(--muted);font-size:14px}.site-footer div{display:flex;gap:20px}.site-footer a{text-decoration:none}
.converter{width:min(100% - 32px,760px);margin:36px auto;background:white;border:1px solid var(--border);border-radius:24px;padding:36px;box-shadow:0 10px 35px #142d3b06}.converter-heading{text-align:center;margin-bottom:28px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--primary)}.converter h1{font-size:clamp(26px,5vw,36px);line-height:1.4;font-weight:750;margin:10px 0}.subtitle{color:var(--muted);margin:12px 0 22px}.converter fieldset{padding:0;border:0;min-width:0}.drop-zone{border:2px dashed #9bbdce;background:#f7fbfd;border-radius:16px;text-align:center;padding:24px 16px;transition:background .15s,border-color .15s}.drop-zone.active{background:#e7f3fa;border-color:var(--primary)}.upload-symbol{display:block;font-size:30px;line-height:1;color:var(--primary);margin-bottom:10px}.drop-zone label{display:block;font-weight:700;margin-bottom:12px;cursor:pointer}.drop-zone input{display:block;max-width:100%;margin:0 auto;font-size:14px}.drop-zone input::file-selector-button{border:1px solid var(--border);border-radius:8px;padding:9px 12px;background:white;color:var(--ink);cursor:pointer}.limits{font-size:13px;color:var(--muted);margin:16px 0 0}.selection-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:24px 0 8px}.selection-heading h2{font-size:15px;font-weight:700;margin:0}.selection-heading span{background:var(--canvas);padding:2px 8px;border-radius:8px}.text-button{border:0;background:none;color:var(--primary);cursor:pointer;padding:8px;font-size:13px;text-decoration:underline}.file-list{list-style:none;padding:0;margin:0}.file-list li{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}.file-detail{flex:1;min-width:0}.file-name{display:block;overflow-wrap:anywhere;unicode-bidi:plaintext}.file-meta{color:var(--muted);font-size:12px}.file-result{display:block;color:var(--primary);font-size:12px}.file-result.failed{color:#a33b1f}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:26px}.form-group label{display:block;font-size:14px;font-weight:700;margin-bottom:7px}.form-group input,.form-group select{width:100%;min-width:0;padding:11px 12px;border:1px solid var(--border);border-radius:10px;background:white;color:var(--ink);min-height:46px}.checkbox-label{display:flex;align-items:center;gap:10px;font-size:14px;margin-top:18px}.checkbox-label input[type=checkbox]{width:18px;height:18px;accent-color:var(--primary)}.field-note{font-size:12px;color:var(--muted);margin:14px 0;line-height:1.8}.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:13px 24px;min-height:50px;border:0;border-radius:12px;background:var(--primary);color:#fff;text-decoration:none;font-weight:700;cursor:pointer}.primary-button:hover{background:var(--primary-dark)}#convert-button{width:100%;margin-top:12px}fieldset:disabled{opacity:.7}.conversion-status{background:var(--canvas);border-radius:10px;padding:12px 14px;margin-top:22px;font-size:14px;overflow-wrap:anywhere}.conversion-status.error{background:#fff1ed;color:#923219}.conversion-status.success{background:#eaf5f1;color:#1b634e}.conversion-status.partial{background:#fff5df;color:#785111}progress{display:block;width:100%;height:8px;accent-color:var(--primary);margin-top:12px}.conversion-result{margin-top:16px}.conversion-result p{font-size:13px;color:var(--muted);unicode-bidi:plaintext}.conversion-result a{width:100%}.retention{border-top:1px solid var(--border);padding-top:20px;margin-top:24px}.home-intro{text-align:center;padding:65px 36px}.format-strip{font-size:15px;letter-spacing:.04em;color:var(--muted);margin:28px 0}.home-intro .limits{margin-top:24px}
@media(max-width:540px){.site-nav{padding:16px;gap:8px;flex-wrap:wrap}.site-brand{font-size:20px}.site-brand small{display:none}.language-links a{padding:9px}.converter{padding:23px 18px;border-radius:18px;margin:22px auto}.settings-grid{gap:12px}.site-footer{display:block;margin-top:24px}.site-footer div{margin:14px 0;flex-wrap:wrap}.home-intro{padding:40px 22px}.drop-zone{padding:20px 12px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.content-page{max-width:860px;overflow-wrap:anywhere}.content-page h2{font-size:21px;font-weight:700;margin:30px 0 12px}.content-page h3{font-size:17px;font-weight:700;margin:22px 0 8px}.content-page p,.content-page li{line-height:1.9}.content-page ul{padding-inline-start:24px}.content-page section{border-top:1px solid var(--border);margin-top:24px;padding-top:4px}.contact-links{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0}.contact-links a{flex:1;min-width:min(100%,220px)}