:root{color-scheme:light;--bg:#f5f8f7;--surface:#ffffff;--soft:#edf3f1;--ink:#152e35;--muted:#4c6369;--line:#c4d3d0;--control:#7c9390;--accent:#126c5a;--accent-hover:#0a5042;--accent-soft:#e3f3ed;--on-accent:#ffffff;--focus:#165bd6;--error-bg:#fff0ed;--error-text:#963223;--shadow:0 18px 60px #173a3410;--art:#dbeee7;--wave:#338774;font-family:Inter,Pretendard,'Noto Sans KR',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-synthesis:none;background:var(--bg);color:var(--ink)}
:root[data-theme=dark]{color-scheme:dark;--bg:#101b20;--surface:#19292e;--soft:#21353b;--ink:#edf6f3;--muted:#b3c7c8;--line:#3d565c;--control:#708f94;--accent:#83dfbf;--accent-hover:#a4efd4;--accent-soft:#24463d;--on-accent:#102e25;--focus:#a6c9ff;--error-bg:#452925;--error-text:#ffc1b1;--shadow:0 18px 60px #00000025;--art:#1c3c35;--wave:#73cdae}
*{box-sizing:border-box}body{margin:0;line-height:1.6}button,input,a{font:inherit;-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}a{color:inherit}button,input{color:var(--ink)}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:4px}header,main,footer{max-width:1160px;margin:auto;padding-inline:36px}header{min-height:112px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{text-decoration:none;display:flex;align-items:center;gap:12px;font-weight:750;font-size:18px;letter-spacing:-.6px}.logo{width:38px;height:38px;display:grid;place-items:center;color:var(--on-accent);background:var(--accent);border-radius:12px;font-size:28px}.theme-control{display:flex;gap:12px;align-items:center}.theme-label{font-size:12px;font-weight:650;color:var(--muted);white-space:nowrap}.theme-options{display:flex;gap:3px;padding:4px;border:1px solid var(--line);background:var(--soft);border-radius:14px}.theme-options button{min-height:40px;border:1px solid transparent;background:transparent;border-radius:10px;padding:7px 11px;font-size:12px;color:var(--muted);white-space:nowrap}.theme-options button[aria-pressed=true]{color:var(--ink);background:var(--surface);border-color:var(--control);font-weight:700}.theme-options button:hover{color:var(--ink);background:var(--surface)}.theme-options button span{font-size:17px;margin-right:3px}.intro{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center;padding:64px 0 52px}.eyebrow{color:var(--accent);font-size:12px;font-weight:750;letter-spacing:1.3px;margin:0 0 20px}h1{font-size:clamp(38px,4.5vw,56px);line-height:1.25;letter-spacing:-2.2px;margin:0 0 22px;font-weight:760}h1 em{font-style:normal;color:var(--accent)}.lead{font-size:15px;line-height:1.9;color:var(--muted);margin:0}.trust-line{display:flex;gap:20px;flex-wrap:wrap;margin-top:24px;font-size:12px;color:var(--muted)}.trust-line i{font-style:normal;color:var(--accent);font-weight:700;margin-right:5px}.hero-art{position:relative;padding:24px;background:var(--art);border:1px solid var(--line);border-radius:28px;transform:rotate(-2deg)}.art-top{display:flex;align-items:center;gap:9px;font-size:11px;color:var(--muted)}.art-top>span:last-child{margin-left:auto;font-size:20px}.art-dot{width:8px;height:8px;background:var(--accent);border-radius:50%}.waveform{height:170px;display:flex;align-items:center;justify-content:center;gap:7px;overflow:hidden}.waveform i{width:7px;max-height:100%;height:var(--bar);background:var(--wave);border-radius:8px}.art-bottom{border-top:1px solid var(--control);padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px}.art-bottom b{background:var(--surface);padding:7px 12px;border-radius:9px;font-size:14px}.art-bottom b span{color:var(--accent);padding:0 8px}.catalog{margin-bottom:28px}.catalog-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px}.catalog-heading h2{font-size:19px;margin:0}.catalog-heading>span{font-size:12px;color:var(--muted)}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.tool-card{display:flex;align-items:center;gap:18px;min-width:0;padding:24px;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:18px;color:var(--ink)}.tool-card[aria-pressed=true]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);background:var(--accent-soft)}.tool-card:hover{border-color:var(--accent)}.card-icon{width:52px;height:52px;flex-shrink:0;display:grid;place-items:center;border-radius:15px;background:var(--soft);color:var(--accent);font-size:27px}.card-body{flex:1;display:grid;gap:5px}.card-body strong{font-size:19px;letter-spacing:-.5px}.card-body span{font-size:14px;color:var(--muted)}.card-body small{font-size:12px;color:var(--muted);margin-top:4px}.tool-card>span:last-child{color:var(--accent);font-size:23px}.tool{background:var(--surface);border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:var(--shadow);scroll-margin-top:24px}.tabs{display:grid;grid-template-columns:1fr 1fr;background:var(--soft);border-bottom:1px solid var(--line)}.tabs button{display:flex;align-items:center;gap:14px;min-height:70px;padding:20px 30px;text-align:left;border:0;border-bottom:3px solid transparent;background:transparent;color:var(--muted);font-size:12px}.tabs b{font-size:15px}.tabs button[aria-selected=true]{background:var(--surface);color:var(--accent);border-bottom-color:var(--accent)}.tabs button:focus-visible{outline-offset:-6px}#panel{padding:34px}.panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:24px}h2{font-size:24px;line-height:1.45;letter-spacing:-.8px;margin:0 0 8px}.panel-head p{font-size:14px;color:var(--muted);margin:0}.format{font-size:11px;font-weight:700;white-space:nowrap;color:var(--accent);background:var(--accent-soft);border:1px solid var(--line);padding:7px 11px;border-radius:8px}.drop{position:relative;display:flex;align-items:center;flex-direction:column;gap:9px;margin-top:28px;padding:38px 20px;background:var(--soft);border:2px dashed var(--control);border-radius:18px;cursor:pointer;text-align:center}.drop:hover,.drop.drag{border-color:var(--accent);background:var(--accent-soft)}.drop:focus-within{outline:3px solid var(--focus);outline-offset:4px}.drop input{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer}.file-icon{display:grid;place-items:center;width:54px;height:54px;background:var(--surface);color:var(--accent);border:1px solid var(--line);border-radius:16px;font-size:28px;margin-bottom:6px}.drop strong{font-size:18px}.drop span:not(.file-icon){font-size:13px;color:var(--muted)}.drop .limit{font-size:12px!important;margin-top:9px}.file-row{display:flex;align-items:center;justify-content:space-between;gap:18px;background:var(--soft);border:1px solid var(--line);border-radius:14px;margin-top:28px;padding:20px}.file-row>div{min-width:0}.file-row strong{font-size:15px;overflow-wrap:anywhere}.file-row p{color:var(--muted);font-size:13px;margin:5px 0 0}.secondary{min-height:44px;padding:10px 15px;border:1px solid var(--control);border-radius:10px;background:var(--surface);color:var(--ink);font-size:13px;font-weight:600;white-space:nowrap}.secondary:hover{border-color:var(--accent);background:var(--accent-soft)}.primary{display:flex;align-items:center;justify-content:center;gap:20px;min-height:54px;width:100%;margin-top:24px;padding:15px 20px;border:0;border-radius:12px;background:var(--accent);color:var(--on-accent);font-size:15px;font-weight:750;text-decoration:none}.primary:hover{background:var(--accent-hover)}audio{display:block;width:100%;height:44px;margin:22px 0 0}.range-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:26px}.range-grid label{font-size:13px;font-weight:650}.range-grid input{display:block;width:100%;min-width:0;margin-top:8px;padding:13px;background:var(--surface);border:1px solid var(--control);border-radius:10px;color:var(--ink);font-size:16px}.selection{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:16px;font-size:13px;color:var(--muted)}.selection>span{overflow-wrap:anywhere}#statusBox{display:flex;gap:14px;flex-wrap:wrap;align-items:center;padding-top:24px}#status{flex-basis:100%;font-size:14px;margin:0}progress{flex:1;width:50%;height:12px;accent-color:var(--accent)}.error{background:var(--error-bg);color:var(--error-text);padding:18px;border:1px solid currentColor;border-radius:12px;font-size:14px}.retry{margin-top:12px}.result{margin-top:28px;padding:28px;border:1px solid var(--accent);border-radius:18px;background:var(--accent-soft)}.success{font-size:13px;font-weight:750;color:var(--accent)}.result h3{font-size:26px;letter-spacing:-.8px;margin:12px 0 8px}.result p{font-size:13px;color:var(--muted);margin:8px 0}.result .tiny{font-size:12px;margin:16px 0 0}.notes{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;padding:38px 0;margin:14px 0 0}.notes>div{padding-left:16px;border-left:2px solid var(--line)}.notes span{font-size:11px;font-weight:650;color:var(--accent)}.notes h3{font-size:16px;margin:10px 0}.notes p{font-size:13px;color:var(--muted);margin:0;line-height:1.9}details{border-top:1px solid var(--line);padding:20px 0;color:var(--muted);font-size:13px}summary{cursor:pointer;min-height:32px;color:var(--ink);font-weight:650}details p{line-height:1.9;max-width:900px}footer{display:flex;justify-content:space-between;gap:24px;padding-top:32px;padding-bottom:40px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);margin-top:20px}.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-link{position:absolute;top:-100px;left:20px;z-index:10;background:var(--surface);padding:12px 18px;border:2px solid var(--focus);border-radius:10px}.skip-link:focus{top:12px}[hidden]{display:none!important}#toolTitle{scroll-margin-top:24px}
@media(max-width:850px){header,main,footer{padding-inline:24px}.theme-label{display:none}.intro{gap:24px;padding-block:44px}.hero-art{padding:18px}.waveform{gap:5px}.brand{font-size:16px}.notes{gap:20px}.tool-card{padding:20px;gap:12px}.card-body strong{font-size:17px}}
@media(max-width:620px){header{padding-block:20px;gap:18px;flex-wrap:wrap}.brand{font-size:17px}.theme-control{width:100%;justify-content:space-between}.theme-label{display:block}.theme-options button{min-height:44px;padding-inline:12px}.intro{grid-template-columns:1fr;padding:34px 0}.hero-art{display:none}h1{font-size:clamp(32px,8vw,44px);letter-spacing:-1.5px}.lead{font-size:14px}.eyebrow{font-size:11px;margin-bottom:16px}.trust-line{gap:16px;margin-top:20px}.tool-grid{grid-template-columns:1fr;gap:12px}.catalog-heading h2{font-size:17px}.catalog-heading>span{font-size:11px}.tool-card{padding:19px}.card-icon{width:48px;height:48px}.card-body span{font-size:13px}.catalog{margin-bottom:22px}.tool{border-radius:18px}.tabs button{min-height:64px;padding:16px;gap:9px}.tabs b{font-size:13px}#panel{padding:24px 18px}.panel-head{flex-wrap:wrap;gap:12px}h2{font-size:21px}.panel-head p{font-size:13px}.format{font-size:11px}.drop{padding:30px 12px;margin-top:22px}.file-row{padding:16px;flex-wrap:wrap;align-items:flex-start}.file-row>div{flex:1 1 160px}.range-grid{gap:12px}.selection{flex-wrap:wrap}.notes{grid-template-columns:1fr;gap:24px;padding-block:30px}.notes>div{padding-left:16px}.result{padding:20px}.result h3{font-size:23px}footer{flex-direction:column;gap:8px;padding-block:26px}.primary{font-size:14px}.catalog-heading{gap:8px}}
@media(max-width:360px){header,main,footer{padding-inline:16px}.theme-label{font-size:11px}.theme-options button{padding-inline:8px}.tabs button{padding-inline:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media(forced-colors:active){.tool-card[aria-pressed=true],.theme-options button[aria-pressed=true]{outline:2px solid Highlight}.tabs button[aria-selected=true]{border-bottom-color:Highlight}.primary,.logo{border:1px solid ButtonText}}
/* Eight-tool workspace and independently scrolling navigation. */
.workspace-layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:32px;max-width:1440px;margin:auto;padding:0 32px}.workspace-layout main{min-width:0;width:100%;padding:0 0 40px}header{max-width:1440px}.workspace-layout .intro{padding-top:40px;gap:28px}.workspace-layout h1{font-size:clamp(32px,3.4vw,48px)}#sidebar{position:sticky;top:16px;align-self:start;max-height:calc(100dvh - 32px);overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable;padding:26px 16px 24px 0;border-right:1px solid var(--line)}.sidebar-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;font-size:15px}.category-button,.nav-tool{display:block;width:100%;text-align:left;background:transparent;color:var(--muted);border:1px solid transparent;border-radius:10px;min-height:44px;padding:10px 12px;font-size:13px}.category-button[aria-pressed=true],.nav-tool[aria-current=page]{background:var(--accent-soft);color:var(--accent);border-color:var(--accent);font-weight:750}.category-button:hover,.nav-tool:hover{background:var(--soft);color:var(--ink)}.nav-group{margin-top:20px}.nav-group p{font-size:11px;font-weight:750;color:var(--muted);margin:0 0 5px 12px}.nav-tool>span{display:inline-block;min-width:22px;color:var(--accent)}.sidebar-note{font-size:11px;line-height:1.8;color:var(--muted);margin:24px 12px 0}.mobile-menu{display:none}.workspace-layout .tool{margin-top:32px}.workspace-layout .catalog{margin-top:34px}.utility{padding:30px}.helper{font-size:13px;color:var(--muted);line-height:1.9}.field{display:grid;gap:8px;font-size:14px;font-weight:650;margin-top:20px}.field input[type=file]{max-width:100%;font-size:14px;padding:16px;background:var(--soft);border:1px dashed var(--control);border-radius:12px}.field input[type=file]::file-selector-button{background:var(--accent);color:var(--on-accent);border:0;padding:10px 12px;border-radius:8px;margin-right:12px;font:inherit;cursor:pointer}textarea,select{width:100%;min-width:0;background:var(--surface);color:var(--ink);border:1px solid var(--control);border-radius:10px;padding:12px;font:inherit;font-size:16px}textarea{resize:vertical;line-height:1.7;font-weight:400;min-height:130px}textarea:focus-visible,select:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.range-grid select{margin-top:8px;min-height:50px}.check{display:flex;align-items:center;gap:10px;font-size:13px;margin:18px 0;line-height:1.6}.check input{width:19px;height:19px;flex-shrink:0;accent-color:var(--accent)}input[type=color]{width:70px;height:44px;background:var(--surface);border:1px solid var(--control);border-radius:8px;padding:4px}.action-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:22px 0 0}.action-row .primary{width:auto;flex:1 1 180px;margin:0}.image-preview{display:block;max-width:100%;max-height:420px;object-fit:contain;border:1px solid var(--control);border-radius:10px;background:repeating-conic-gradient(#dedede 0% 25%,#fff 0% 50%) 0/20px 20px}.stats,.unit-output{display:block;font-size:20px;font-weight:700;overflow-wrap:anywhere;color:var(--accent);background:var(--accent-soft);border:1px solid var(--line);border-radius:14px;padding:22px;margin:20px 0}.unit-output:empty{display:none}.utility:focus-visible,#catalog:focus-visible{outline:3px solid var(--focus);outline-offset:4px}#catalog{scroll-margin-top:24px}.utility p[role=status]{font-size:13px;overflow-wrap:anywhere}.utility .range-grid{margin-top:20px}#menuBackdrop{position:fixed;inset:0;background:#0009;z-index:39}.menu-open{overflow:hidden}
@media(min-width:901px){#menuBackdrop{display:none!important}}
@media(max-width:1100px) and (min-width:901px){.workspace-layout{grid-template-columns:218px minmax(0,1fr);gap:24px;padding-inline:24px}.workspace-layout .hero-art{display:none}.workspace-layout .intro{grid-template-columns:1fr}.tool-grid{grid-template-columns:1fr}}
@media(max-width:900px){.workspace-layout{display:block;padding-inline:24px}.mobile-menu{display:block}#menuOpen{margin-top:20px}#sidebar{position:fixed;inset:0 auto 0 0;top:0;width:min(320px,88vw);height:100dvh;max-height:100dvh;padding:24px 18px calc(24px + env(safe-area-inset-bottom));z-index:40;background:var(--surface);border:0;box-shadow:var(--shadow);display:none}#sidebar.open{display:block}.workspace-layout .intro{padding-top:30px}.workspace-layout .catalog{margin-top:24px}.workspace-layout .tool{margin-top:24px}.utility{padding:24px 20px}.sidebar-top{position:sticky;top:-24px;background:var(--surface);padding:10px 0;z-index:1}}
@media(max-width:620px){.workspace-layout{padding-inline:20px}.utility{padding:22px 16px}.utility h2{font-size:21px}.stats,.unit-output{font-size:17px;padding:16px}.field input[type=file]{padding:12px;font-size:12px}.workspace-layout .tool-grid{grid-template-columns:1fr}.workspace-layout .tool-card{gap:12px}.workspace-layout .card-body strong{font-size:17px}.range-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:360px){.workspace-layout{padding-inline:16px}.utility .range-grid{grid-template-columns:1fr}}
.target-settings{grid-column:1/-1;border:1px solid var(--line);padding:18px;border-radius:12px;background:var(--soft)}.target-settings .field{margin-top:0}.target-settings .range-grid{margin-top:16px}.document-list{padding:0;list-style:none;margin:20px 0}.document-list li{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:12px 0;border-bottom:1px solid var(--line)}.document-list li>span{flex:1 1 180px;min-width:0;overflow-wrap:anywhere;font-size:13px}.document-list .secondary{font-size:12px;padding:8px 10px}.field input[type=text]{width:100%;background:var(--surface);color:var(--ink);border:1px solid var(--control);border-radius:10px;padding:13px;font-size:16px}.licenses{font-size:11px;border:0;padding:0;max-width:520px}.licenses summary{font-size:12px}.licenses p{margin:6px 0}.result .secondary{text-decoration:none}.workspace-layout .notes{clear:both}
@media(max-width:620px){.target-settings{padding:14px}.document-list li>span{flex-basis:100%}.licenses{max-width:100%}}
.format-guidance{border:1px solid var(--accent);background:var(--accent-soft);color:var(--ink);padding:18px;border-radius:12px;margin:18px 0}.format-guidance strong{color:var(--accent)}.format-guidance p{font-size:13px;line-height:1.9;margin:8px 0 0}.format-note{grid-column:1/-1;font-size:13px;color:var(--muted);margin:0;line-height:1.8}#compressPanel .image-options>.range-grid>label:has(#compressFormat){grid-column:1/-1}