:root{--ink:#172033;--muted:#697386;--blue:#2764eb;--blue-dark:#174ac4;--line:#dfe4ec;--soft:#f5f7fb;--navy:#101a30;--green:#23b26d;--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:#fff;font-size:16px}button,input{font:inherit}button,a{transition:.2s ease}.topbar{height:76px;display:flex;align-items:center;gap:40px;padding:0 clamp(20px,5vw,76px);border-bottom:1px solid #edf0f5;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);font-size:20px;font-weight:800;letter-spacing:-.5px}.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--blue);color:#fff;font-weight:900}.topbar nav{display:flex;gap:28px}.topbar nav a,.ghost{color:#536075;text-decoration:none;font-weight:600;font-size:14px}.topbar nav a:hover{color:var(--blue)}.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}.ghost{background:none;border:0;cursor:pointer}.primary{border:0;border-radius:10px;background:var(--blue);color:white;font-weight:750;padding:15px 23px;cursor:pointer;box-shadow:0 7px 18px rgba(39,100,235,.19)}.primary:hover{background:var(--blue-dark);transform:translateY(-1px)}.primary.small{padding:11px 17px;font-size:14px}.menu{display:none;margin-left:auto;background:none;border:0;font-size:24px}.hero{text-align:center;padding:88px 20px 56px;background:radial-gradient(circle at 50% 30%,#eef4ff 0,rgba(255,255,255,0) 45%)}.eyebrow,.kicker{font-weight:800;font-size:12px;letter-spacing:1.8px;color:var(--blue)}.eyebrow span{display:inline-block;width:7px;height:7px;background:var(--green);border-radius:50%;margin-right:7px}.hero h1{font-size:clamp(42px,6vw,76px);letter-spacing:-3.5px;line-height:1.03;margin:19px auto 20px;max-width:880px}.hero h1 em{font-style:normal;color:var(--blue)}.lead{max-width:720px;margin:0 auto 38px;color:var(--muted);font-size:18px;line-height:1.65}.converter-card{max-width:820px;margin:auto;background:#fff;border:1px solid #dce3ef;border-radius:var(--radius);box-shadow:0 24px 70px rgba(32,54,94,.14);overflow:hidden}.format-row{height:76px;background:#f8faff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center;gap:15px}.format-select{width:180px;padding:13px 16px;background:#fff;border:1px solid #d8dee9;border-radius:10px;font-weight:800;text-align:left;cursor:pointer}.format-select span{float:right;color:#8791a3}.swap{color:#8a94a6;font-size:22px}.drop-content{padding:43px 20px 39px}.file-icon{margin:0 auto 16px;display:grid;place-items:center;width:52px;height:52px;border-radius:15px;background:#eaf0ff;color:var(--blue);font-size:27px}.drop-content h2{font-size:20px;margin:0 0 6px}.drop-content p{color:var(--muted);margin:0 0 22px}.drop-content small{display:block;color:#939cab;margin-top:15px}.converter-card.drag{border-color:var(--blue);box-shadow:0 20px 80px rgba(39,100,235,.25)}.file-state{padding:32px}.selected-file{display:flex;align-items:center;gap:15px;padding:17px;border:1px solid var(--line);border-radius:12px;text-align:left}.selected-file>div:nth-child(2){display:flex;flex-direction:column;min-width:0}.selected-file strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.selected-file span{color:var(--muted);font-size:13px;margin-top:3px}.selected-file button{margin-left:auto;border:0;background:none;color:#7d8796;font-size:24px;cursor:pointer}.doc-icon{width:42px;height:42px;border-radius:9px;display:grid;place-items:center;background:#edf2ff;color:var(--blue)}.convert-btn,.download-btn{margin-top:20px;width:100%}.download-btn{border:0;border-radius:10px;background:var(--green);color:#fff;font-weight:800;padding:15px;cursor:pointer}.progress-wrap{margin-top:20px}.progress{height:8px;background:#edf0f5;border-radius:10px;overflow:hidden}.progress i{display:block;height:100%;width:0;background:var(--blue);transition:width .3s}.progress-wrap span{font-size:13px;color:var(--muted)}.privacy-note{font-size:13px;color:#7b8495;margin-top:22px}.stats{max-width:1120px;margin:0 auto;padding:34px 20px 66px;display:grid;grid-template-columns:repeat(4,1fr);gap:30px;border-bottom:1px solid #edf0f4}.stats div{text-align:center}.stats strong{display:block;font-size:28px}.stats span{font-size:14px;color:var(--muted)}.section{max-width:1120px;margin:auto;padding:100px 24px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:50px}.section h2,.dark-section h2,.cta h2{font-size:clamp(34px,4vw,52px);line-height:1.1;letter-spacing:-2px;margin:12px 0}.section-head p{max-width:420px;color:var(--muted);line-height:1.6}.tabs{display:flex;gap:5px;margin:43px 0 24px;border-bottom:1px solid var(--line);overflow:auto}.tabs button{border:0;background:none;padding:14px 19px;color:#6d7788;font-weight:700;cursor:pointer;border-bottom:3px solid transparent}.tabs button.active{color:var(--blue);border-color:var(--blue)}.format-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.format-item{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff;display:flex;align-items:center;gap:13px;cursor:pointer}.format-item:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(20,42,80,.1);border-color:#b9c9ef}.format-item i{font-style:normal;width:40px;height:40px;display:grid;place-items:center;border-radius:10px;background:#edf2ff;color:var(--blue);font-size:12px;font-weight:900}.format-item span{font-weight:700}.format-item small{display:block;color:var(--muted);font-weight:400;margin-top:2px}.dark-section{background:var(--navy);color:#fff;padding:100px max(24px,calc((100vw - 1072px)/2));display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.dark-section p{color:#aeb8ca;line-height:1.7;max-width:580px}.kicker.light{color:#82a8ff}.dark-section ul{list-style:none;padding:20px 0 0;margin:0;display:grid;gap:20px}.dark-section li{position:relative;padding-left:36px}.dark-section li:before{content:'✓';position:absolute;left:0;top:2px;color:#6f98ff}.dark-section li span{display:block;color:#9da9bd;font-size:14px;margin-top:4px}.security-visual{height:390px;position:relative;display:grid;place-items:center}.orbit{position:absolute;border:1px solid #33405a;border-radius:50%}.o1{width:330px;height:330px}.o2{width:245px;height:245px}.shield{width:150px;height:170px;background:linear-gradient(150deg,#3977ff,#1b4fd0);clip-path:polygon(50% 0,94% 18%,85% 73%,50% 100%,15% 73%,6% 18%);display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:40px;font-weight:900;filter:drop-shadow(0 24px 35px rgba(29,84,211,.3))}.shield span{font-size:12px;margin-top:8px}.api-section{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:80px}.api-section p{color:var(--muted);line-height:1.7}.text-link{color:var(--blue);font-weight:800;text-decoration:none}.api-section pre{margin:0;background:#121a2b;color:#d7e1f5;border-radius:18px;padding:32px;overflow:auto;box-shadow:0 25px 55px rgba(17,26,45,.2);line-height:1.7}.api-section code span{color:#64e0a7}.cta{text-align:center;background:var(--blue);color:white;padding:82px 24px}.cta h2{max-width:750px;margin:14px auto 28px}.white-btn{display:inline-block;background:white;color:var(--blue);padding:14px 22px;border-radius:10px;text-decoration:none;font-weight:800}footer{padding:65px max(24px,calc((100vw - 1072px)/2)) 28px;background:#0b1325;color:#96a1b5}footer .inverse{color:#fff}footer>p{margin-bottom:40px}.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;padding:40px 0;border-top:1px solid #283145;border-bottom:1px solid #283145}.footer-links div{display:flex;flex-direction:column;gap:11px}.footer-links b{color:#fff;margin-bottom:4px}.footer-links a{color:#9ca7ba;text-decoration:none;font-size:14px}footer>small{display:block;margin-top:28px}.modal,.picker{position:fixed;inset:0;background:rgba(6,12,25,.62);z-index:50;display:grid;place-items:center;padding:20px}.modal[hidden],.picker[hidden]{display:none}.modal-card,.picker-card{width:min(440px,100%);background:white;border-radius:18px;padding:30px;box-shadow:0 30px 100px #0004;position:relative}.modal-close{position:absolute;right:20px;top:16px;border:0;background:none;font-size:26px}.modal-card h2{margin-bottom:6px}.modal-card p{color:var(--muted)}.modal-card label{display:block;font-size:14px;font-weight:700;margin-top:18px}.modal-card input,.picker-card input{width:100%;padding:13px;border:1px solid var(--line);border-radius:9px;margin-top:7px}.full{width:100%;margin-top:22px}.picker-top{display:flex;justify-content:space-between}.picker-top button{border:0;background:none;font-size:24px}.picker-card{max-height:75vh;overflow:auto}.picker-card>input{margin:18px 0}.picker-option{display:flex;justify-content:space-between;width:100%;border:0;background:#fff;border-radius:8px;padding:12px;cursor:pointer;text-transform:uppercase;font-weight:800}.picker-option:hover{background:#edf3ff;color:var(--blue)}.toast{position:fixed;right:24px;bottom:24px;background:#111b2d;color:#fff;padding:13px 18px;border-radius:10px;opacity:0;transform:translateY(12px);pointer-events:none;transition:.25s;z-index:80}.toast.show{opacity:1;transform:none}
@media(max-width:820px){.topbar nav,.header-actions{display:none}.menu{display:block}.topbar.open{height:auto;flex-wrap:wrap;padding-top:18px;padding-bottom:18px}.topbar.open nav{display:flex;order:3;width:100%;flex-direction:column;gap:14px}.topbar.open .header-actions{display:flex;order:4;width:100%}.hero{padding-top:62px}.format-grid{grid-template-columns:repeat(2,1fr)}.dark-section,.api-section{grid-template-columns:1fr;gap:30px}.security-visual{height:300px}.section-head{display:block}.stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.hero h1{letter-spacing:-2px}.format-row{padding:12px;height:auto}.format-select{width:135px}.drop-content{padding:34px 16px}.file-state{padding:18px}.format-grid{grid-template-columns:1fr}.section{padding:72px 20px}.footer-links{grid-template-columns:1fr}.dark-section{padding-top:72px;padding-bottom:72px}.security-visual{height:240px}.o1{width:240px;height:240px}.o2{width:180px;height:180px}.shield{width:115px;height:135px}.api-section pre{font-size:13px;padding:22px}}
.seo-section{max-width:1120px;margin:auto;padding:0 24px 100px}.seo-intro{max-width:760px}.seo-intro h2,.faq h2{font-size:clamp(32px,4vw,48px);line-height:1.12;letter-spacing:-1.8px;margin:12px 0 18px}.seo-intro p{color:var(--muted);line-height:1.75}.seo-links{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:38px 0 70px}.seo-links article{border:1px solid var(--line);border-radius:14px;padding:23px;background:#fff}.seo-links h3{font-size:18px;margin:0 0 9px}.seo-links h3 a{color:var(--ink);text-decoration:none}.seo-links h3 a:hover{color:var(--blue)}.seo-links p{color:var(--muted);line-height:1.6;margin:0}.faq{max-width:850px}.faq details{border-bottom:1px solid var(--line);padding:18px 0}.faq summary{font-weight:800;cursor:pointer}.faq details p{color:var(--muted);line-height:1.65;margin-bottom:0}@media(max-width:820px){.seo-links{grid-template-columns:repeat(2,1fr)}}@media(max-width:520px){.seo-links{grid-template-columns:1fr}.seo-section{padding-bottom:72px}}