@font-face{font-family:"Inter Fallback";src:local("Arial");ascent-override:90.2%;descent-override:22.48%;line-gap-override:0%;size-adjust:107.4%}
:root{--bg:#f3f6f5;--surface:#fff;--surface-2:#eef3f2;--text:#17211f;--soft:#586663;--dim:#87928f;--border:#dce5e2;--accent:#0f766e;--accent-2:#2563eb;--accent-3:#db2777;--good:#15803d;--bad:#c2413b;--sans:"Inter","Inter Fallback","Noto Sans KR",system-ui,sans-serif;--mono:"JetBrains Mono",ui-monospace,Consolas,monospace;--shadow:0 10px 30px rgba(25,55,50,.08);--max:1180px}
[data-theme="dark"]{--bg:#0d1413;--surface:#151e1c;--surface-2:#1c2825;--text:#edf5f2;--soft:#abbab5;--dim:#74847f;--border:#2b3935;--accent:#2dd4bf;--accent-2:#60a5fa;--accent-3:#f472b6;--good:#4ade80;--bad:#fb7185;--shadow:0 12px 36px rgba(0,0,0,.28)}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;overflow-x:hidden;background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.55;-webkit-font-smoothing:antialiased}button,textarea,select{font:inherit}button{color:inherit}.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:22px}.skip-link{position:absolute;left:-999px}.skip-link:focus{left:12px;top:12px;z-index:100;background:var(--accent);color:#fff;padding:9px 13px}.site-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 84%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}.header-inner{height:64px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:800}.brand-mark{font:700 .92rem var(--mono);color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2));padding:7px 8px;border-radius:6px}.header-actions{display:flex;gap:9px}.lang-select,.icon-btn,.control{height:40px;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:7px}.lang-select,.control{padding:0 12px}.icon-btn{width:40px;cursor:pointer}.intro{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:end;padding-top:44px;padding-bottom:24px}.eyebrow{display:inline-block;color:var(--accent);font-size:.74rem;font-weight:800;text-transform:uppercase;margin-bottom:8px}.intro h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.02;margin:0;letter-spacing:0}.intro h1 span{display:block;color:var(--accent)}.intro p{margin:0 0 5px;color:var(--soft);font-size:1.04rem;max-width:45ch}.workspace{padding-bottom:24px}.tool-tabs{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;margin-bottom:9px}.tool-tab{min-width:0;height:62px;border:1px solid var(--border);background:var(--surface);border-radius:7px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:9px;font-weight:700}.tool-tab:hover{border-color:var(--accent)}.tool-tab.active{background:var(--text);border-color:var(--text);color:var(--bg)}.tab-icon{font-family:var(--mono);font-size:.8rem;min-width:24px}.tool-panel{min-width:0;background:var(--surface);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow);padding:22px}.panel-head{display:flex;justify-content:space-between;gap:16px;align-items:start;margin-bottom:17px}.panel-head h2{font-size:1.25rem;margin:0 0 3px}.panel-head p{color:var(--soft);margin:0}.privacy-badge{font-size:.72rem;color:var(--good);border:1px solid color-mix(in srgb,var(--good) 35%,var(--border));padding:4px 8px;border-radius:5px;white-space:nowrap}.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-bottom:12px}.btn{min-height:38px;padding:7px 13px;border:1px solid var(--border);border-radius:6px;background:var(--surface-2);cursor:pointer;font-weight:650;font-size:.86rem}.btn:hover{border-color:var(--accent)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.danger{margin-left:auto;color:var(--bad);background:transparent}.segmented{display:flex;border:1px solid var(--border);border-radius:6px;overflow:hidden}.segmented button{height:36px;border:0;border-right:1px solid var(--border);background:var(--surface);padding:0 11px;cursor:pointer;font:600 .8rem var(--sans)}.segmented button:last-child{border-right:0}.segmented button.active{background:var(--text);color:var(--bg)}.check{display:flex;align-items:center;gap:7px;color:var(--soft);font-size:.86rem}.editor-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px}.editor{min-width:0;display:flex;flex-direction:column;gap:6px;color:var(--soft);font-size:.78rem;font-weight:700;text-transform:uppercase}.editor.single{margin-top:5px}.editor textarea{width:100%;min-height:330px;resize:vertical;background:var(--bg);border:1px solid var(--border);border-radius:6px;color:var(--text);font:500 .86rem/1.55 var(--mono);padding:14px;tab-size:2;text-transform:none}.editor.single textarea{min-height:150px}.editor textarea:focus{outline:2px solid color-mix(in srgb,var(--accent) 30%,transparent);border-color:var(--accent)}.status{min-height:24px;padding-top:8px;color:var(--soft);font:500 .82rem var(--mono)}.status.ok{color:var(--good)}.status.error{color:var(--bad)}.diff-result{border:1px solid var(--border);background:var(--bg);border-radius:6px;margin-top:10px;max-height:420px;overflow:auto;font:500 .82rem/1.55 var(--mono)}.diff-line{display:grid;grid-template-columns:45px 45px 22px minmax(0,1fr);min-height:25px}.diff-line span{padding:2px 7px;border-right:1px solid var(--border)}.diff-line code{padding:2px 9px;white-space:pre-wrap;word-break:break-all}.diff-line.add{background:color-mix(in srgb,var(--good) 12%,transparent)}.diff-line.del{background:color-mix(in srgb,var(--bad) 12%,transparent)}.diff-empty{padding:28px;text-align:center;color:var(--dim)}.jwt-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px;margin-top:12px}.jwt-grid section{min-width:0;border:1px solid var(--border);background:var(--bg);border-radius:6px;overflow:hidden}.result-head{height:42px;display:flex;align-items:center;justify-content:space-between;padding:0 11px;border-bottom:1px solid var(--border)}.result-head h3{font-size:.82rem;margin:0}.mini-copy{border:0;background:none;color:var(--accent);font-size:.76rem;cursor:pointer}.jwt-grid pre{min-height:180px;max-height:360px;overflow:auto;margin:0;padding:13px;font:500 .82rem/1.5 var(--mono);white-space:pre-wrap}.hash-output{display:block;margin-top:12px;color:var(--soft);font-size:.78rem;font-weight:700;text-transform:uppercase}.hash-output output{display:block;min-height:58px;margin-top:6px;padding:14px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text);font:500 .86rem/1.45 var(--mono);text-transform:none;word-break:break-all}.content{max-width:820px;padding-top:54px}.content h2{font-size:1.8rem;margin:0 0 12px}.content h3{margin:24px 0 7px}.content p{color:var(--soft);margin:0 0 13px}.faq{padding-top:36px}.faq details{background:var(--surface);border:1px solid var(--border);border-radius:7px;margin-bottom:8px}.faq summary{padding:15px 17px;cursor:pointer;font-weight:650}.faq details p{padding:0 17px 15px}.site-footer{border-top:1px solid var(--border);margin-top:54px;padding:26px 0}.footer-nav{display:flex;gap:8px 20px;justify-content:center;flex-wrap:wrap;margin-bottom:11px}.footer-nav a{color:var(--soft);font-size:.85rem;font-weight:600;text-decoration:none}.site-footer p{text-align:center;color:var(--dim);font-size:.82rem}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,15px);opacity:0;background:var(--text);color:var(--bg);padding:9px 15px;border-radius:6px;font-size:.82rem;transition:.2s;pointer-events:none}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:760px){.intro{grid-template-columns:1fr;gap:12px;padding-top:30px}.tool-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}.tool-tab{height:52px;gap:5px}.tool-tab>span:last-child{min-width:0;overflow-wrap:anywhere}.editor-grid,.jwt-grid{grid-template-columns:minmax(0,1fr)}.editor textarea{min-height:240px}.panel-head{display:block}.privacy-badge{display:inline-block;margin-top:8px}.btn.danger{margin-left:0}.tool-panel{padding:15px}.intro h1{font-size:2.35rem}.intro p{overflow-wrap:anywhere}}
@media(max-width:420px){.tool-tab{font-size:.74rem}.tab-icon{min-width:18px}.wrap{padding-inline:14px}.lang-select{max-width:110px}.diff-line{grid-template-columns:30px 30px 18px minmax(0,1fr)}.brand{font-size:.92rem}.brand-mark{padding:6px}.header-actions{gap:6px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}