:root{--ink:#191a18;--paper:#daeaf6;--panel:#fff;--soft:#eeeeea;--acid:#191a18;--mint:#537864;--muted:#70736e;--line:#dedfd9;--danger:#bd5548}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;min-width:320px;margin:0;font-family:Pretendard Variable,Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans KR,sans-serif}button,input,select{font:inherit}button,a,select,input[type=range]{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,[role=button]:focus-visible{outline:2px solid var(--mint);outline-offset:3px}.app-shell{width:min(1320px,100%);margin:0 auto;padding:0 32px 32px}.topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;min-height:68px;display:flex}.brand{color:inherit;letter-spacing:-.025em;align-items:center;gap:11px;font-weight:750;text-decoration:none;display:inline-flex}.brand-mark{background:var(--ink);color:#fff;border-radius:50%;place-items:center;width:30px;height:30px;font-size:13px;font-weight:750;display:grid}.privacy-pill{border:1px solid var(--line);color:#5e615d;background:#ffffffb8;border-radius:999px;align-items:center;gap:9px;padding:8px 12px;font-size:11px;font-weight:600;display:inline-flex}.privacy-dot{background:#319267;border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 3px #3192671c}.hero{grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);align-items:end;gap:48px;min-height:0;padding:36px 0 32px;display:grid}.eyebrow,.section-kicker{color:var(--muted);letter-spacing:.14em;margin:0 0 14px;font-size:10px;font-weight:700;line-height:1}.hero h1{letter-spacing:-.06em;white-space:nowrap;max-width:none;margin:0;font-size:clamp(3rem,4.4vw,4rem);font-weight:760;line-height:.93}.hero h1 span{color:#737670;font-weight:600}.hero-note{color:#626560;border-left:1px solid #b9bbb5;max-width:390px;margin:0 0 6px;padding-left:20px;font-size:13px;line-height:1.8}.hero-note strong{color:var(--ink)}.converter-grid{grid-template-columns:minmax(0,1.55fr) minmax(350px,.75fr);align-items:start;gap:20px;display:grid}.media-column{gap:20px;display:grid}.drop-zone,.source-card,.result-card,.settings-card{border:1px solid var(--line);background:var(--panel);border-radius:14px;box-shadow:0 1px 2px #16181508}.drop-zone{cursor:pointer;text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:20px;min-height:430px;padding:56px 32px;transition:background .18s,border-color .18s;display:flex;position:relative;overflow:hidden}.drop-zone:before,.drop-zone:after{display:none}.drop-zone:before{border:1px solid var(--line);width:340px;height:340px;top:-195px;right:-90px}.drop-zone:after{background:var(--acid);opacity:.7;width:170px;height:170px;bottom:-105px;left:-30px}.drop-zone:hover,.drop-zone.is-dragging{background:#fafaf8;border-color:#a9aca5}.drop-number{color:var(--muted);font-size:10px;font-weight:700;position:absolute;top:22px;left:24px}.drop-icon{z-index:1;border:1px solid var(--line);background:var(--soft);border-radius:50%;place-items:center;width:76px;height:76px;display:grid;position:relative}.drop-icon:after{display:none}.drop-icon span{font-family:Arial,sans-serif;font-size:34px;font-weight:300;line-height:1}.drop-title{letter-spacing:-.035em;margin:0;font-size:clamp(1.45rem,2.4vw,2rem);font-weight:700}.drop-subtitle{color:var(--muted);margin:8px 0 0;font-size:13px}.format-chip{z-index:1;border:1px solid var(--line);background:var(--paper);border-radius:999px;padding:7px 12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;font-weight:650;display:inline-flex;position:relative}.source-card{overflow:hidden}.source-preview{background:linear-gradient(45deg,#1b1d1b 25%,#0000 25%) -10px 0/20px 20px,linear-gradient(-45deg,#1b1d1b 25%,#0000 25%) -10px 0/20px 20px,linear-gradient(45deg,#0000 75%,#1b1d1b 75%) -10px 0/20px 20px,linear-gradient(-45deg,#0000 75%,#1b1d1b 75%) -10px 0/20px 20px,#242724;place-items:center;min-height:360px;display:grid;position:relative;overflow:hidden}.source-preview video{object-fit:contain;width:100%;height:100%;max-height:560px;display:block}.preview-label{letter-spacing:.12em;background:#ffffffe6;border:0;border-radius:999px;padding:6px 9px;font-size:10px;font-weight:700;position:absolute;top:16px;left:16px}.file-row{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:18px;min-height:84px;padding:17px 20px;display:flex}.file-copy{min-width:0}.file-name{text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:14px;font-weight:700;overflow:hidden}.file-meta{color:var(--muted);flex-wrap:wrap;gap:7px;margin:6px 0 0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;display:flex}.text-button{color:var(--ink);cursor:pointer;background:0 0;border:0;border-bottom:1px solid;flex:none;padding:3px 0;font-size:12px;font-weight:650}.text-button:disabled{cursor:not-allowed;opacity:.4}.settings-card{padding:28px;position:sticky;top:16px}.settings-heading{border-bottom:1px solid var(--line);align-items:center;gap:15px;padding-bottom:25px;display:flex}.step-number{background:var(--ink);color:#fff;border-radius:50%;place-items:center;width:38px;height:38px;font-size:11px;font-weight:700;display:grid}.settings-heading .section-kicker,.result-heading .section-kicker{margin-bottom:7px}.settings-heading h2,.result-heading 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13px;font-size:12px;font-weight:650}.select-wrap>span{pointer-events:none;font-size:18px;position:absolute;top:50%;right:14px;transform:translateY(-55%)}.toggle-row p{color:var(--muted);margin:6px 0 0;font-size:10px}.switch{cursor:pointer;flex:none;width:46px;height:25px;position:relative}.switch input{opacity:0;pointer-events:none;position:absolute}.switch-track{background:#dcddd5;border:1px solid #cfd0cb;border-radius:999px;transition:background .16s;position:absolute;inset:0}.switch-track:after{content:"";background:var(--panel);border:1px solid #c5c7c1;border-radius:50%;width:17px;height:17px;transition:transform .16s;position:absolute;top:3px;left:3px}.switch input:checked+.switch-track{border-color:var(--ink);background:var(--ink)}.switch input:checked+.switch-track:after{background:#fff;border-color:#fff;transform:translate(21px)}.switch input:focus-visible+.switch-track{outline:3px solid var(--mint);outline-offset:3px}.lossy-quality{border-top:1px dashed 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.2s;display:block}.convert-button,.download-button{border:1px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;border-radius:9px;justify-content:space-between;align-items:center;gap:20px;width:100%;min-height:59px;margin-top:14px;padding:0 20px;font-size:13px;font-weight:700;text-decoration:none;transition:background .16s,opacity .16s;display:flex}.convert-button:not(:disabled):hover,.download-button:hover{background:#343632}.convert-button:disabled{color:#92958e;cursor:not-allowed;background:#e8e8e4;border-color:#dedfd9}.cancel-button{color:#8e4238;background:#f8e9e6;border-color:#ead5d1;justify-content:center}.engine-note{color:#7c7f79;margin:13px 4px 0;font-size:9px;line-height:1.55}.result-card{padding:26px}.result-heading{justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px;display:flex}.result-size{border:1px solid var(--line);background:var(--soft);border-radius:999px;padding:7px 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(max-width:980px){.app-shell{padding-inline:22px}.hero{grid-template-columns:1fr;gap:22px;min-height:0;padding:34px 0 30px}.hero-note{max-width:570px}.converter-grid{grid-template-columns:1fr}.settings-card{position:static}}@media (max-width:620px){.app-shell{padding-inline:14px}.topbar{min-height:70px}.privacy-pill{background:0 0;border:0;width:10px;height:10px;padding:0;font-size:0}.privacy-dot{width:10px;height:10px}.hero{min-height:0;padding:28px 0 26px}.hero h1{white-space:normal;font-size:clamp(2.9rem,14vw,4.6rem);line-height:.95}.drop-zone{min-height:390px}.source-preview{min-height:230px}.settings-card,.result-card{padding:20px}.file-row,.result-heading{align-items:flex-start}footer{margin-top:56px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}