:root{--ink:#071b31;--body:#596a80;--purple:#533afd;--purple-dark:#4434d4;--line:#e5eaf4;--paper:#fff;--mist:#f7f8ff;--green:#119654;--shadow:rgba(50,50,93,.18) 0 30px 65px -28px,rgba(0,0,0,.1) 0 18px 38px -24px}*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#fff 0,#fafbff 53rem,#fff 90rem);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.5;overflow-x:hidden}.ambient{position:absolute;border-radius:50%;filter:blur(1px);pointer-events:none;z-index:-1}.ambient-one{width:34rem;height:34rem;right:-15rem;top:-13rem;background:radial-gradient(circle,rgba(83,58,253,.16),rgba(249,107,238,.05) 45%,transparent 69%)}.ambient-two{width:27rem;height:27rem;left:-17rem;top:28rem;background:radial-gradient(circle,rgba(63,194,255,.13),transparent 67%)}a{color:inherit}.site-header{height:74px;max-width:1160px;margin:auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-size:19px;font-weight:720;letter-spacing:-.4px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;color:#fff;background:linear-gradient(135deg,var(--purple),#8358ff 65%,#ea2261);box-shadow:0 8px 20px rgba(83,58,253,.24)}.brand-mark svg{width:24px;fill:#fff}.site-header nav{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:550}.site-header nav a{text-decoration:none;color:#42526a}.site-header nav a:hover{color:var(--purple)}.privacy-chip{display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border:1px solid #dbece3;background:#f4fbf7;color:#177a49;border-radius:99px;font-size:12px}.privacy-chip span{width:7px;height:7px;background:#1eb66b;border-radius:50%;box-shadow:0 0 0 4px rgba(30,182,107,.11)}.hero{max-width:1050px;margin:auto;padding:72px 24px 36px;text-align:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border:1px solid #dedafa;background:rgba(247,246,255,.85);color:#4737c6;border-radius:6px;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.spark{color:#e84393}.hero h1{font-size:clamp(45px,7vw,74px);line-height:1.01;letter-spacing:-.055em;font-weight:650;margin:24px auto 22px;max-width:900px}.hero h1 span{background:linear-gradient(100deg,#533afd 20%,#7d45e7 55%,#d62979);background-clip:text;-webkit-background-clip:text;color:transparent}.hero-copy{max-width:670px;margin:0 auto 42px;color:var(--body);font-size:18px;line-height:1.65}.converter-shell{position:relative;max-width:850px;margin:0 auto;text-align:left;background:rgba(255,255,255,.92);border:1px solid rgba(218,224,239,.95);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;backdrop-filter:blur(16px)}.toolbar{min-height:72px;display:flex;align-items:center;gap:22px;padding:14px 20px;border-bottom:1px solid var(--line);background:#fbfcff}.control{display:flex;align-items:center;gap:10px}.control label{font-size:12px;font-weight:700;color:#42526a;text-transform:uppercase;letter-spacing:.05em}.control select{appearance:none;min-width:185px;padding:10px 35px 10px 12px;border:1px solid #d9dff0;border-radius:7px;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23596a80'%3E%3Cpath d='m2 4 4 4 4-4'/%3E%3C/svg%3E") no-repeat right 11px center;color:var(--ink);font:inherit;font-size:14px;font-weight:600}.quality-control output{color:var(--purple);margin-left:6px}.quality-control input{accent-color:var(--purple);width:120px}.local-status{margin-left:auto;display:flex;align-items:center;gap:7px;color:var(--green);font-size:12px;font-weight:650}.local-status svg{width:20px;fill:currentColor}.dropzone{margin:24px;border:1.5px dashed #9d96ef;border-radius:12px;min-height:286px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(145deg,rgba(249,248,255,.8),rgba(255,255,255,.9));cursor:pointer;outline:none;transition:.2s ease}.dropzone:hover,.dropzone:focus-visible,.dropzone.is-dragging{border-color:var(--purple);background:#f7f5ff;box-shadow:inset 0 0 0 3px rgba(83,58,253,.06);transform:translateY(-1px)}.upload-icon{display:grid;place-items:center;width:66px;height:66px;border-radius:16px;background:linear-gradient(145deg,#eeeaff,#faf8ff);border:1px solid #ddd7fd;color:var(--purple);margin-bottom:16px}.upload-icon svg{width:35px;fill:currentColor}.dropzone h2{font-size:22px;letter-spacing:-.025em;margin:0 0 4px}.dropzone p{margin:0 0 14px;color:var(--body)}.dropzone p span{color:var(--purple);font-weight:700;text-decoration:underline;text-underline-offset:3px}.dropzone small{color:#8490a3}.queue{padding:22px}.queue-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.queue-head div{display:flex;align-items:baseline;gap:9px}.queue-head strong{font-size:17px}.queue-head span{font-size:12px;color:#8490a3}.text-button{border:0;background:none;color:#6a7590;font:inherit;font-size:13px;cursor:pointer}.text-button:hover{color:#d33864}.file-list{display:grid;gap:10px;max-height:400px;overflow:auto}.file-card{display:grid;grid-template-columns:54px 1fr auto;align-items:center;gap:13px;padding:10px;border:1px solid var(--line);border-radius:10px;background:#fff}.file-thumb{width:54px;height:54px;object-fit:cover;border-radius:7px;background:#eef0f5}.file-info{min-width:0}.file-name{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:650}.file-meta,.file-state{font-size:12px;color:#8490a3}.file-state.success{color:var(--green)}.file-actions{display:flex;align-items:center;gap:7px}.icon-button,.download-button{border:1px solid var(--line);background:#fff;border-radius:7px;min-height:36px;padding:0 10px;color:#526179;cursor:pointer;font:inherit;font-size:12px;font-weight:650}.icon-button{width:36px;padding:0;font-size:18px}.download-button{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;color:#fff;background:linear-gradient(100deg,var(--purple),#694cf5);border-color:transparent;box-shadow:0 7px 16px rgba(83,58,253,.22);transition:.2s}.icon-button:hover{background:#f7f6ff;border-color:#bcb5f3}.download-button:hover{background:linear-gradient(100deg,var(--purple-dark),#5a3ce8);border-color:transparent;transform:translateY(-1px)}.download-button:focus-visible{outline:3px solid rgba(83,58,253,.25);outline-offset:2px}.action-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px;padding-top:17px;border-top:1px solid var(--line)}.action-row p{display:flex;align-items:center;gap:7px;margin:0;color:#758197;font-size:12px}.action-row p svg{width:18px;fill:#20a962}.primary-button{display:flex;align-items:center;justify-content:center;gap:9px;border:0;border-radius:8px;padding:13px 19px;background:linear-gradient(100deg,var(--purple),#694cf5);box-shadow:0 10px 22px rgba(83,58,253,.24);color:#fff;font:inherit;font-weight:700;cursor:pointer;transition:.2s}.primary-button svg{width:19px;fill:currentColor}.primary-button:hover{background:linear-gradient(100deg,var(--purple-dark),#5a3ce8);transform:translateY(-1px)}.primary-button:disabled{opacity:.55;cursor:wait;transform:none}.secondary-button{display:flex;align-items:center;justify-content:center;gap:9px;border:1px solid var(--purple);border-radius:8px;padding:13px 19px;background:transparent;color:var(--purple);font:inherit;font-weight:700;cursor:pointer;transition:.2s}.secondary-button svg{width:19px;fill:currentColor}.secondary-button:hover{background:#f0edff;transform:translateY(-1px)}.secondary-button:disabled{opacity:.55;cursor:wait;transform:none}.notice{min-height:0;text-align:center;color:#bd3155;font-size:13px;padding:0 20px}.notice:not(:empty){padding-bottom:18px}.trust-row{display:flex;justify-content:center;flex-wrap:wrap;gap:26px;margin-top:24px;color:#728096;font-size:12px}.trust-row span{display:flex;align-items:center;gap:6px}.trust-row svg{width:17px;fill:none;stroke:#23a765;stroke-width:1.8}.steps{max-width:1080px;margin:90px auto 0;padding:70px 24px}.section-heading{text-align:center}.section-heading>span,.section-kicker{font-size:11px;font-weight:800;letter-spacing:.12em;color:var(--purple)}.section-heading h2,.knowledge h2,.privacy-panel h2{font-size:clamp(32px,4vw,46px);line-height:1.08;letter-spacing:-.04em;margin:10px 0}.section-heading p,.knowledge-copy p{color:var(--body);margin:0}.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:42px}.step-grid article{position:relative;padding:30px 26px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 16px 35px rgba(39,49,89,.06)}.step-number{position:absolute;right:20px;top:18px;color:#cbcfe0;font:700 12px ui-monospace,monospace}.step-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:9px;background:#f0edff;color:var(--purple);font-size:24px}.step-grid h3{font-size:18px;margin:21px 0 7px}.step-grid p{font-size:14px;color:var(--body);margin:0}.knowledge{max-width:1080px;margin:40px auto 0;padding:75px 24px;display:grid;grid-template-columns:.8fr 1.2fr;gap:65px;align-items:start}.knowledge-copy{position:sticky;top:30px}.knowledge-copy p{font-size:16px;line-height:1.7}.format-cards{display:grid;gap:12px}.format-cards article{display:grid;grid-template-columns:72px 1fr;gap:18px;padding:22px;border:1px solid var(--line);background:#fff;border-radius:12px}.format-badge{display:grid;place-items:center;width:62px;height:62px;border-radius:12px;font:800 13px ui-monospace,monospace}.format-badge.png{background:#eeeaff;color:#553ac6}.format-badge.jpg{background:#eaf8f0;color:#147c4a}.format-badge.webp{background:#fff0f5;color:#bd315f}.format-cards h3{font-size:17px;margin:1px 0 5px}.format-cards p{font-size:13px;color:var(--body);margin:0;line-height:1.6}.faq{max-width:1080px;margin:35px auto 0;padding:75px 24px}.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:38px}.faq details{border:1px solid var(--line);border-radius:12px;background:#fff;padding:0 20px;box-shadow:0 14px 34px rgba(39,49,89,.045)}.faq summary{padding:18px 25px 18px 0;color:var(--ink);font-size:15px;font-weight:700;cursor:pointer}.faq details p{margin:0;padding:0 0 19px;color:var(--body);font-size:13px;line-height:1.65}.privacy-panel{max-width:1080px;margin:60px auto 100px;padding:48px;display:grid;grid-template-columns:115px 1fr auto;align-items:center;gap:32px;border-radius:16px;color:#fff;background:radial-gradient(circle at 85% 0,rgba(132,91,255,.45),transparent 35%),#1c1e54;box-shadow:0 30px 60px rgba(23,24,69,.22)}.lock-art{display:grid;place-items:center;width:104px;height:104px;border:1px solid rgba(255,255,255,.16);border-radius:16px;background:rgba(255,255,255,.07)}.lock-art svg{width:59px;fill:#a99dff}.privacy-panel .section-kicker{color:#b9b0ff}.privacy-panel h2{font-size:34px}.privacy-panel p{margin:0;color:rgba(255,255,255,.67);font-size:14px;line-height:1.7}.privacy-panel ul{list-style:none;margin:0;padding:0;white-space:nowrap;color:rgba(255,255,255,.83);font-size:13px}.privacy-panel li+li{margin-top:10px}.privacy-panel li span{color:#56e89a;margin-right:7px}footer.site-footer{max-width:1080px;margin:auto;padding:0 24px 45px;color:#7a8799;font-size:12px}.footer-main{padding:30px 0;border-top:1px solid var(--line);display:flex;align-items:center;gap:18px}.footer-brand{color:var(--ink);font-size:16px}.footer-brand .brand-mark{width:27px;height:27px;border-radius:7px;font-size:12px}.footer-main p{margin:0}.footer-main>span{margin-left:auto}.visitor-stats{display:grid;grid-template-columns:minmax(220px,.8fr) minmax(420px,1.2fr);gap:42px;align-items:center;padding:30px;border:1px solid #e5e5fb;border-radius:20px;background:linear-gradient(135deg,#fbfaff,#f4f7ff);box-shadow:0 18px 45px -36px rgba(50,50,93,.45)}.stats-copy h2{margin:5px 0 6px;color:var(--ink);font-size:22px;letter-spacing:-.5px}.stats-copy p{margin:0;max-width:430px;line-height:1.65}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:0}.stats-grid div{padding:17px 15px;border:1px solid rgba(83,58,253,.1);border-radius:14px;background:rgba(255,255,255,.82);text-align:center}.stats-grid dt{font-size:11px;color:#718096}.stats-grid dd{margin:4px 0 0;color:var(--ink);font-size:22px;font-weight:760;letter-spacing:-.5px}.transparency-body .ambient{position:fixed}.transparency-link{display:inline-block;margin-top:14px;color:#fff;font-size:13px;font-weight:700;text-underline-offset:4px}.footer-link{color:var(--purple);font-weight:700;text-decoration:none}.footer-link:hover{text-decoration:underline}.transparency-page{max-width:1160px;margin:auto;padding:55px 28px 100px}.transparency-hero{max-width:850px;margin:0 auto 55px;text-align:center}.transparency-hero h1{margin:22px 0 20px;font-size:clamp(42px,6vw,68px);line-height:1.04;letter-spacing:-.05em}.transparency-hero h1 span{background:linear-gradient(100deg,#533afd,#d62979);background-clip:text;-webkit-background-clip:text;color:transparent}.transparency-hero>p{max-width:760px;margin:0 auto;color:var(--body);font-size:17px;line-height:1.75}.review-note{margin-top:28px;padding:20px 24px;border:1px solid #e1ddff;border-radius:14px;background:#f8f7ff;text-align:left}.review-note strong{color:var(--purple)}.review-note p{margin:5px 0 0;color:#596a80;font-size:13px;line-height:1.7}.transparency-layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:34px;align-items:start}.doc-nav{position:sticky;top:20px;display:grid;gap:3px;padding:18px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 14px 35px rgba(39,49,89,.05)}.doc-nav strong{margin-bottom:7px;font-size:13px}.doc-nav a{padding:7px 9px;border-radius:7px;color:#647188;font-size:12px;text-decoration:none}.doc-nav a:hover{color:var(--purple);background:#f5f3ff}.technical-doc{display:grid;min-width:0;gap:18px}.technical-doc>section{min-width:0;padding:34px 38px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 18px 42px rgba(39,49,89,.045);scroll-margin-top:20px}.technical-doc h2{margin:7px 0 18px;font-size:30px;line-height:1.15;letter-spacing:-.035em;overflow-wrap:anywhere;hyphens:auto}.technical-doc h3{margin:25px 0 6px;font-size:17px}.technical-doc p,.technical-doc li{color:var(--body);font-size:14px;line-height:1.75;overflow-wrap:anywhere}.technical-doc code{padding:2px 5px;border-radius:5px;background:#f1f2f8;color:#34445b;font:12px ui-monospace,SFMono-Regular,Consolas,monospace}.fact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.fact-grid div{display:grid;gap:2px;padding:15px;border:1px solid #e8e6fb;border-radius:10px;background:#fafaff}.fact-grid strong{font-size:13px}.fact-grid span{color:#78859a;font-size:11px}.callout{margin:22px 0 0!important;padding:16px 18px;border-left:4px solid var(--purple);border-radius:0 9px 9px 0;background:#f7f6ff}.flow-list,.audit-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}.flow-list li{display:grid;grid-template-columns:34px 1fr;gap:13px;align-items:start}.flow-list li>span{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:#ece8ff;color:var(--purple);font-weight:800}.flow-list p{margin:2px 0 0}.data-flow{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:24px;padding:18px;border-radius:12px;background:#131641;color:#fff}.data-flow span{padding:8px 10px;border:1px solid rgba(255,255,255,.16);border-radius:7px;font-size:11px}.data-flow b{color:#a99dff}.request-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.request-list div{padding:15px;border:1px solid var(--line);border-radius:10px}.request-list p{margin:7px 0 0;font-size:12px}.storage-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:11px}.storage-grid article{padding:18px;border:1px solid var(--line);border-radius:11px;background:#fbfcff}.storage-grid h3{margin:0 0 5px}.storage-grid p{margin:0;font-size:12px}.check-list{padding-left:20px}.check-list li+li{margin-top:9px}.audit-list{counter-reset:audit}.audit-list li{padding:15px 17px;border:1px solid var(--line);border-radius:10px;background:#fbfcff}.review-files{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:24px;padding:18px;border:1px solid #e1ddff;border-radius:12px;background:#f8f7ff}.review-files strong{width:100%;margin-bottom:3px}.doc-version{margin:22px 0 0!important;color:#8a94a5!important;font-size:11px!important}.back-link{padding:8px 12px;border-radius:8px;background:#f0edff;color:var(--purple)!important;font-weight:700}@media(max-width:760px){.site-header{padding:0 18px}.site-header nav a{display:none}.hero{padding-top:42px}.hero h1{font-size:43px}.hero-copy{font-size:16px}.toolbar{align-items:flex-start;flex-wrap:wrap}.control{flex-direction:column;align-items:flex-start;gap:4px}.quality-control{margin-left:auto}.local-status{width:100%;margin:0}.dropzone{margin:14px;min-height:245px;padding:20px}.action-row{align-items:stretch;flex-direction:column}.primary-button{width:100%}.secondary-button{width:100%}.step-grid,.knowledge,.faq-grid{grid-template-columns:1fr}.steps{margin-top:45px}.knowledge{gap:30px}.knowledge-copy{position:static}.privacy-panel{margin:40px 18px 70px;padding:32px 25px;grid-template-columns:1fr}.lock-art{width:76px;height:76px}.privacy-panel ul{white-space:normal}.site-footer{margin:0 18px!important;padding-left:0!important;padding-right:0!important}.footer-main{flex-wrap:wrap}.footer-main>span{margin-left:0;width:100%}.visitor-stats{grid-template-columns:1fr;gap:20px;padding:24px}.stats-grid{grid-template-columns:repeat(3,1fr)}.transparency-page{padding:35px 18px 70px}.transparency-hero{margin-bottom:32px}.transparency-hero h1{font-size:40px}.transparency-hero>p{font-size:15px}.transparency-layout{grid-template-columns:1fr}.doc-nav{display:none}.technical-doc>section{padding:26px 22px}.technical-doc h2{font-size:26px}.fact-grid{grid-template-columns:repeat(2,1fr)}.request-list,.storage-grid{grid-template-columns:1fr}.data-flow{align-items:stretch;flex-direction:column;text-align:center}.data-flow b{transform:rotate(90deg)}.footer-link{width:100%}}@media(max-width:430px){.fact-grid{grid-template-columns:1fr}.hero{padding-left:14px;padding-right:14px}.hero h1{font-size:37px}.converter-shell{border-radius:12px}.toolbar{gap:12px}.control select{min-width:166px}.quality-control input{width:105px}.file-card{grid-template-columns:46px 1fr}.file-thumb{width:46px;height:46px}.file-actions{grid-column:2}.download-button{min-height:44px;padding:0 14px}.icon-button{width:44px;min-height:44px}.trust-row{align-items:flex-start;flex-direction:column;gap:9px;margin-left:20px}.format-cards article{grid-template-columns:1fr}.step-grid article{padding:25px}.stats-grid{grid-template-columns:1fr}.stats-grid div{display:flex;align-items:center;justify-content:space-between;text-align:left}.stats-grid dd{margin:0}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.lang-link{font-size:13px;font-weight:600;padding:5px 10px;border:1px solid var(--line);border-radius:6px;text-decoration:none;color:var(--body)}.lang-link:hover{color:var(--purple);border-color:var(--purple)}.dark-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--line);border-radius:8px;background:transparent;cursor:pointer;color:var(--body);flex-shrink:0;padding:0}.dark-toggle:hover{border-color:var(--purple);color:var(--purple)}.dark-toggle svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.icon-sun{display:block}.icon-moon{display:none}html.dark .icon-sun{display:none}html.dark .icon-moon{display:block}
/* ── Dark mode tokens ── */
html.dark{--ink:#e8edf5;--body:#9ba8bb;--line:#2a3344;--paper:#0f1623;--mist:#131c2b;color-scheme:dark}
html.dark body{background:linear-gradient(180deg,#0d1420 0,#0a1018 53rem,#0d1420 90rem)}
html.dark .converter-shell{background:#131c2b;border-color:#1e2d42;box-shadow:0 4px 32px rgba(0,0,0,.4)}
html.dark .dropzone{background:#0f1b2d;border-color:#1e2d42;color:var(--ink)}
html.dark .dropzone:hover,html.dark .dropzone.is-dragging{border-color:var(--purple);background:#13203a}
html.dark .file-card{background:#131c2b;border-color:#1e2d42}
html.dark select,html.dark input[type=range]{background:#0f1b2d;color:var(--ink);border-color:#1e2d42}
html.dark .site-header{background:rgba(10,16,24,.85);backdrop-filter:blur(12px);border-bottom:1px solid #1e2d42}
html.dark .site-footer{background:#0a1018;border-top:1px solid #1e2d42}
html.dark .format-cards article,html.dark .step-grid article,html.dark .faq details{background:#131c2b;border-color:#1e2d42}
html.dark .privacy-chip{background:#0d1e0d;border-color:#1a3a1a;color:#4ade80}
html.dark .visitor-stats{background:#0f1623;border-color:#1e2d42}
html.dark .stats-grid div{background:#131c2b;border-color:#1e2d42}
html.dark .privacy-panel{background:linear-gradient(135deg,#0d1420,#111a2e)}
html.dark .toolbar{background:#0f1b2d;border-color:#1e2d42}
html.dark .queue-head{border-color:#1e2d42}