:root{--ink:#203047;--muted:#63748b;--blue:#0785d1;--blue-hover:#006eb4;--blue-soft:#e9f5ff;--line:#dce5ed;--page:#f7f9fc;--surface:#fff;--subtle:#f2f6fa;--green:#12815c;--red:#b53642;--shadow:0 8px 30px #25476508;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--page);font-synthesis:none;color-scheme:light}
html[data-theme="dark"]{--ink:#e6edf7;--muted:#a0afc3;--blue:#48b6ff;--blue-hover:#76c9ff;--blue-soft:#122e46;--line:#2b3c51;--page:#101823;--surface:#182332;--subtle:#202e40;--green:#64d4ac;--red:#ff9da9;--shadow:0 8px 30px #00000015;color-scheme:dark}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}a{color:inherit;text-decoration:none}button{border:0}button,select,summary{cursor:pointer}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button:disabled{cursor:wait;opacity:.55}[hidden]{display:none!important}svg{display:block;flex-shrink:0}svg{fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}:focus-visible{outline:3px solid #59b7ef;outline-offset:4px}.shell{width:min(1100px,calc(100% - 48px));margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip{position:absolute;top:-70px;left:12px;background:var(--surface);padding:12px;z-index:20}.skip:focus{top:12px}
.header{background:var(--surface);border-bottom:1px solid var(--line)}.header-inner{height:80px;display:flex;align-items:center;gap:30px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:26px;font-weight:800;letter-spacing:-1.2px;white-space:nowrap}.brand-mark{display:block;flex-shrink:0}.brand .brand-mark{width:38px;height:38px}.brand-wordmark{line-height:1.1}.brand-accent{color:var(--blue)}.main-nav{display:flex;align-items:center;gap:27px;margin-left:auto}.main-nav button{padding:12px 0;background:none;color:var(--muted);font-size:13px;font-weight:550}.main-nav button:hover,.main-nav button[aria-pressed="true"]{color:var(--blue)}.theme-toggle{width:38px;height:38px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--muted);display:grid;place-items:center}.theme-toggle:hover{background:var(--subtle)}.theme-toggle svg{width:18px;height:18px}.theme-sun{display:none}html[data-theme="dark"] .theme-sun{display:block}html[data-theme="dark"] .theme-moon{display:none}
main{background:radial-gradient(ellipse 65% 410px at 50% 0,#dbf1ff9c,transparent),radial-gradient(ellipse 35% 510px at 0 340px,#e5e7fb75,transparent),radial-gradient(ellipse 35% 510px at 100% 340px,#ffebec75,transparent)}html[data-theme="dark"] main{background:radial-gradient(ellipse 65% 440px at 50% 0,#143554aa,transparent)}.converter-section{padding:42px 0 38px}.intro{text-align:center}.hero-brand .brand-mark{width:70px;height:70px;border-radius:20px;box-shadow:0 8px 22px #1957d51a}.hero-brand{display:flex;justify-content:center;align-items:center;gap:14px;font-size:56px;letter-spacing:-2.8px;font-weight:800}h1{font-size:30px;letter-spacing:-1px;line-height:1.25;margin:22px 0 10px;font-weight:720}h1>span{color:var(--blue)}.intro>p{font-size:15px;color:var(--muted);line-height:1.6;margin:0}.workspace{max-width:800px;margin:24px auto 0;scroll-margin-top:24px}fieldset{border:0;padding:0;margin:0;min-width:0}.input-action-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;padding:7px;border:1px solid #cbdbe7;border-radius:14px;background:var(--surface);box-shadow:var(--shadow)}html[data-theme="dark"] .input-action-row{border-color:var(--line)}.input-action-row:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px #0785d112}.source-panels{min-width:0}.urlbox{min-height:52px;display:flex;align-items:center;gap:13px;padding:0 0 0 13px}.link-icon{width:21px;height:21px;color:var(--muted)}.urlbox input{width:100%;min-width:0;border:0;outline:0;background:transparent;padding:13px 0;color:var(--ink);font-size:15px}.urlbox input::placeholder{color:#8898aa}.urlbox button{display:flex;align-items:center;gap:7px;align-self:stretch;margin:3px 0;padding:0 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--muted);font-size:12px;font-weight:550}.urlbox button:hover{background:var(--subtle);color:var(--blue)}.urlbox button svg{width:16px;height:16px}.primary{display:flex;align-items:center;justify-content:center;gap:12px;min-height:52px;padding:14px 21px;background:var(--blue);color:#fff;border-radius:9px;font-size:14px;font-weight:650;white-space:nowrap}.primary:hover{background:var(--blue-hover)}.primary svg{width:19px;height:19px}.primary:disabled svg{display:none}html[data-theme="dark"] .primary,html[data-theme="dark"] .download{color:#071a2c}.hint{font-size:12px;color:var(--muted);line-height:1.6;margin:10px 0 0}.input-label{display:block;font-size:13px;font-weight:650;margin-bottom:10px;color:var(--ink)}
#conversion-form{padding:28px;border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:0 12px 40px #2547650a}
.input-hint{font-size:12px;margin:10px 0 0;text-align:left}
.settings-row{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:24px;margin-top:24px;padding-top:23px;border-top:1px solid var(--line)}
.output-control,.quality-row{display:flex;flex-direction:column;align-items:stretch;gap:10px;min-width:0}
.field-label,.quality-row label{font-size:13px;font-weight:650;color:var(--ink)}
.format-switch{display:grid;grid-template-columns:1fr 1fr;gap:5px;padding:5px;background:var(--subtle);border:1px solid var(--line);border-radius:12px}
.format{position:relative;display:flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:8px;padding:10px 12px;min-height:44px;font-size:14px;font-weight:700;cursor:pointer;color:var(--muted)}
.format.active{color:var(--blue);background:var(--surface);border-color:var(--line);box-shadow:0 2px 5px #20304708}
.format:has(input:focus-visible){outline:3px solid #59b7ef;outline-offset:2px}
.format input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
.format svg{width:18px;height:18px}.format-description{font-size:12px;font-weight:400}
.quality-row select{width:100%;min-width:0;min-height:56px;border:1px solid var(--line);border-radius:12px;padding:12px 32px 12px 15px;background:var(--surface);color:var(--ink);font-size:14px;font-weight:550}
.quality-guidance{display:flex;align-items:flex-start;gap:8px;margin-top:13px;color:var(--muted)}.quality-guidance svg{width:16px;height:16px;margin-top:2px}
.quality-note{font-size:12px;line-height:1.65;margin:0;color:var(--muted)}
.permission{display:flex;align-items:flex-start;gap:11px;color:var(--ink);font-size:12px;line-height:1.7;margin:23px 0 0;padding:15px 16px;border:1px solid var(--line);border-radius:12px;background:var(--subtle);cursor:pointer}
.permission input{margin:2px 0 0;accent-color:var(--blue);width:18px;height:18px;flex-shrink:0;cursor:pointer}
.form-footnote{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px;color:var(--muted);margin-top:20px;padding-top:19px;border-top:1px solid var(--line)}
.service-state{display:inline-flex;align-items:center;gap:7px;font-weight:550}.service-state i{width:7px;height:7px;background:var(--muted);border-radius:50%;flex-shrink:0}.service-state.ready{color:var(--green)}.service-state.ready i{background:var(--green)}.service-state.offline{color:var(--red)}.service-state.offline i{background:var(--red)}
.under-card{display:flex;justify-content:center;gap:24px;margin:18px 0 0;color:var(--muted);font-size:12px}.under-card>span>span{color:var(--green);margin-right:5px}
.notice{font-size:13px;line-height:1.6;padding:12px 16px;border:1px solid var(--line);border-radius:10px;margin-top:18px;background:var(--surface);color:var(--muted)}.notice.error{color:var(--red);border-color:var(--red)}
.job-card{margin-top:26px;padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow);scroll-margin-top:24px}.job-top{display:flex;align-items:center;gap:13px}.job-top>div{min-width:0}.job-icon{display:grid;place-items:center;width:44px;height:44px;flex-shrink:0;border-radius:12px;background:var(--blue-soft);color:var(--blue);font-size:24px}.section-label{font-size:10px;font-weight:700;letter-spacing:1.5px;color:var(--muted)}.job-card h2{font-size:16px;line-height:1.5;letter-spacing:-.2px;margin:5px 0 0;overflow-wrap:anywhere}.job-card.complete .job-icon{color:var(--green);background:var(--subtle)}.job-card.complete .section-label{color:var(--green)}.job-card.failed .job-icon,.job-card.failed .section-label{color:var(--red)}.progress-label{display:flex;justify-content:space-between;gap:12px;font-size:12px;line-height:1.6;color:var(--muted);margin:22px 0 9px}.progress-label>span:last-child{font-variant-numeric:tabular-nums;white-space:nowrap}progress{display:block;width:100%;height:6px;border:0;border-radius:9px;overflow:hidden;accent-color:var(--blue)}progress::-webkit-progress-bar{background:var(--subtle);border-radius:9px}progress::-webkit-progress-value{background:var(--blue);border-radius:9px}progress::-moz-progress-bar{background:var(--blue)}progress:not([value]){background:linear-gradient(90deg,var(--subtle),var(--blue),var(--subtle));background-size:200% 100%;animation:loading 1.8s linear infinite}@keyframes loading{to{background-position:-200% 0}}.job-actions{display:flex;gap:10px;margin-top:19px;flex-wrap:wrap}.download,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:9px;padding:12px 20px;font-size:13px;font-weight:650;min-height:44px}.download{background:var(--blue);color:white;min-width:170px}.download:hover{background:var(--blue-hover)}.secondary{background:var(--subtle);color:var(--muted)}.secondary:hover{color:var(--ink)}.download-feedback{font-size:12px;line-height:1.7;color:var(--muted);padding:12px 14px;margin:16px 0 0;background:var(--subtle);border-radius:8px}
.about{max-width:1000px;padding:36px 38px;background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.section-intro{text-align:center}.section-intro h2{font-size:27px;line-height:1.3;letter-spacing:-.8px;font-weight:700;margin:11px 0}.section-intro>p{color:var(--muted);font-size:13px;line-height:1.7;margin:0}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;margin-top:32px}.step-number{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;font-size:12px;font-weight:750;color:var(--blue);background:var(--blue-soft)}.steps h3{font-size:15px;letter-spacing:-.2px;margin:16px 0 8px}.steps p{font-size:12px;line-height:1.8;color:var(--muted);margin:0}.faq{max-width:800px;padding:55px 0}.faq .section-intro h2{font-size:25px}.questions{margin-top:22px}.questions details{border-bottom:1px solid var(--line)}summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:19px 0;font-size:13px;font-weight:600}summary::-webkit-details-marker{display:none}summary>span{font-size:23px;font-weight:300;color:var(--muted)}details[open] summary>span{transform:rotate(45deg)}details p{font-size:13px;line-height:1.8;color:var(--muted);margin:0 30px 20px 0}.footer{display:flex;align-items:center;flex-wrap:wrap;gap:20px;padding:27px 0 32px;border-top:1px solid var(--line)}.footer .brand{font-size:22px}.footer .brand .brand-mark{width:30px;height:30px}.footer p,.footer>span,.footer nav{font-size:11px;color:var(--muted)}.footer p{margin:0}.footer nav{display:flex;gap:18px;margin-left:auto}.footer a:hover{color:var(--blue)}
@media(min-width:1600px){.converter-section{padding-top:52px;padding-bottom:45px}}
@media(max-width:760px){.header-inner{height:70px;gap:16px}.main-nav{gap:16px}.main-nav button{font-size:11px}.brand{font-size:23px;gap:8px}.brand .brand-mark{width:32px;height:32px}.hero-brand{font-size:48px}.hero-brand .brand-mark{width:62px;height:62px}h1{font-size:27px}.converter-section{padding-top:32px}.about{padding:28px}.steps{gap:25px}.section-intro h2{font-size:24px}.footer p{order:4;flex-basis:100%;margin-top:-8px}.footer>span{margin-left:auto}.footer nav{margin-left:auto}}
@media(max-width:540px){.shell{width:calc(100% - 32px)}.header-inner{height:64px;gap:12px}.header .brand{font-size:21px}.header .brand .brand-mark{width:30px;height:30px}.main-nav{gap:12px}.main-nav button{font-size:10px;padding:10px 0;max-width:62px;line-height:1.4}.theme-toggle{width:32px;height:32px;border-radius:8px;margin-left:auto;flex-shrink:0}.converter-section{padding:30px 0}.hero-brand{font-size:44px;gap:11px}.hero-brand .brand-mark{width:56px;height:56px;border-radius:17px}h1{font-size:24px;letter-spacing:-.8px;margin-top:20px}.intro>p{font-size:13px}.workspace{margin-top:20px}.input-action-row{grid-template-columns:1fr;padding:6px;gap:6px;border-radius:12px}.urlbox{padding-left:9px;gap:10px;min-height:48px}.urlbox input{font-size:13px}.urlbox button{padding:0 10px}.urlbox button>span{display:none}.primary{min-height:46px;font-size:13px;padding:12px}#conversion-form{padding:19px 17px;border-radius:16px}.input-label{font-size:13px}.input-hint{font-size:11px}.settings-row{gap:16px;margin-top:20px;padding-top:19px;grid-template-columns:1fr}.output-control,.quality-row{gap:8px}.format{min-height:44px;padding:10px;font-size:14px}.format-description{font-size:12px}.quality-row select{min-height:50px;font-size:14px}.quality-note{font-size:12px}.permission{font-size:12px;padding:13px 12px;margin-top:19px}.form-footnote{font-size:11px;gap:10px;flex-wrap:wrap;margin-top:17px;padding-top:16px}.under-card{font-size:11px;gap:16px;flex-wrap:wrap;margin-top:16px}.job-card{padding:19px 17px;margin-top:20px}.job-card h2{font-size:14px}.job-icon{width:38px;height:38px}.job-actions{gap:8px}.download{flex:1;min-width:0}.download,.secondary{padding:12px 14px;font-size:12px}.about{padding:27px 23px;border-radius:14px}.section-intro h2{font-size:23px}.section-intro>p{font-size:12px}.steps{grid-template-columns:1fr;gap:24px;margin-top:27px}.steps article{display:grid;grid-template-columns:32px 1fr;column-gap:13px}.step-number{grid-row:span 2}.steps h3{margin:1px 0 5px}.steps p{grid-column:2}.faq{padding:40px 0}.faq .section-intro h2{font-size:23px}summary{font-size:12px;padding:17px 0}details p{font-size:12px;margin-right:12px}.footer{gap:18px 12px;padding:23px 0}.footer .brand{font-size:21px}.footer nav{gap:14px}.footer>span{order:5;margin-left:0;font-size:10px}.footer p{margin-top:0;font-size:10px}}
@media(max-width:370px){.main-nav{display:none}.under-card{gap:8px 12px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}


.input-hint a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.platforms{margin-top:14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:0 18px;scroll-margin-top:20px}.platforms summary{padding:14px 0;font-size:12px}.platform-list{display:flex;flex-wrap:wrap;gap:8px}.platform-list>span{padding:6px 10px;border-radius:6px;background:var(--subtle);color:var(--ink);font-size:12px}.platforms p{font-size:12px;line-height:1.7;margin:14px 0 16px;color:var(--muted)}

.sponsor-card{max-width:800px;display:flex;align-items:center;gap:24px;padding:22px 24px;margin:0 auto 42px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.sponsor-label{align-self:flex-start;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:5px 7px}
.sponsor-copy{flex:1;min-width:0}.sponsor-copy h2{font-size:15px;margin:0 0 6px;overflow-wrap:anywhere}.sponsor-copy p{font-size:12px;line-height:1.7;color:var(--muted);margin:0 0 7px;overflow-wrap:anywhere}.sponsor-copy>span{font-size:11px;color:var(--muted);overflow-wrap:anywhere}
.sponsor-visit{font-size:12px;color:var(--blue);white-space:nowrap;text-decoration:underline;text-underline-offset:4px;padding:10px 0}
.support-prompt{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:24px;padding-top:20px}.support-prompt strong{font-size:13px}.support-prompt p{font-size:12px;line-height:1.7;margin:5px 0 0;color:var(--muted)}.support-prompt a{color:var(--blue);font-size:12px;white-space:nowrap;text-decoration:underline;text-underline-offset:4px}
.back-link{margin-left:auto;color:var(--blue);font-size:13px}.document-page{max-width:860px;padding-top:64px;padding-bottom:72px;background:none}.document-page h1{font-size:42px;letter-spacing:-1.5px;margin:16px 0}.document-page h2{font-size:20px;letter-spacing:-.3px;margin:34px 0 12px}.document-page p{font-size:14px;line-height:1.9;color:var(--muted)}.document-page .lead{font-size:18px;line-height:1.8;max-width:640px;margin:0 0 36px}.document-page p a{color:var(--blue);text-decoration:underline;overflow-wrap:anywhere}.content-card{background:var(--surface);padding:28px 32px;border:1px solid var(--line);border-radius:16px;margin:30px 0}.content-card h2{margin-top:0}.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.info-grid h2{margin-top:0}.text-button{display:inline-flex;margin:6px 0 10px;white-space:normal}.document-page .small-print{font-size:12px}.footer nav{flex-wrap:wrap;line-height:1.8}
@media(max-width:540px){.sponsor-card{gap:14px;padding:20px;flex-wrap:wrap;margin-bottom:30px}.sponsor-label{flex-basis:auto}.sponsor-copy{flex-basis:100%;order:2}.sponsor-visit{margin-left:auto}.support-prompt{flex-direction:column;align-items:flex-start;gap:12px}.document-page{padding-top:38px;padding-bottom:44px}.document-page h1{font-size:32px;letter-spacing:-1px}.document-page .lead{font-size:16px}.info-grid{grid-template-columns:1fr;gap:12px}.content-card{padding:23px}.document-page h2{font-size:18px}.footer nav{flex-basis:100%;margin-left:0;gap:12px 18px}}


/* Native, keyboard-accessible language control; the globe is decorative. */
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.language-picker{position:relative;display:flex;align-items:center;color:var(--muted)}
.language-picker>svg{position:absolute;left:11px;width:18px;height:18px;pointer-events:none}
.language-picker select{width:154px;min-height:38px;border:1px solid var(--line);border-radius:10px;padding:8px 23px 8px 36px;background:var(--surface);color:var(--ink);font-size:13px}
.language-picker select:hover{background:var(--subtle)}
@media(max-width:760px){.header-inner{height:auto;min-height:70px;flex-wrap:wrap;gap:10px;padding-block:12px}.header-actions{margin-left:auto}.main-nav{order:3;flex-basis:100%;justify-content:center;gap:28px;margin-left:0}.main-nav button{max-width:none;font-size:12px}.language-picker select{width:138px}}
@media(max-width:540px){.header-inner{height:auto;min-height:64px}.header-actions{gap:8px}.language-picker select{width:128px;min-height:36px;font-size:12px}.header-actions .theme-toggle{margin-left:0}.main-nav button{max-width:none;font-size:11px}}

.legal-notice{font-size:12px;line-height:1.8;color:var(--muted);margin:13px 0 0;overflow-wrap:anywhere}.legal-notice a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.document-page h2{scroll-margin-top:20px}