:root{--navy:#102a43;--blue:#176b87;--cyan:#1aa6a6;--ink:#17212b;--muted:#617182;--line:#dce5ea;--soft:#f3f7f8;--pink:#b42b67;--green:#1f7a5c;--shadow:0 18px 50px rgba(16,42,67,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;color:var(--ink);font-family:"Pretendard","Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif;line-height:1.65}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:10px;z-index:99;background:#fff;padding:8px 12px}.topbar{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 max(24px,calc((100vw - 1120px)/2));border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);z-index:20}.brand,.footer-brand{text-decoration:none;color:var(--navy);font-weight:900;font-size:20px;letter-spacing:-.04em}.brand span,.footer-brand span{color:var(--cyan)}nav{display:flex;gap:4px;overflow-x:auto}nav a{text-decoration:none;color:var(--muted);font-weight:700;font-size:14px;white-space:nowrap;padding:8px 11px;border-radius:999px}nav a:hover,nav a.active{color:var(--navy);background:var(--soft)}main{max-width:1120px;margin:auto;padding:0 24px}.hero{min-height:590px;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:72px;padding:74px 0}.eyebrow,.kicker{font-size:12px;font-weight:900;letter-spacing:.15em;color:var(--blue);margin:0 0 14px}.hero h1{font-size:clamp(38px,5vw,64px);letter-spacing:-.055em;line-height:1.13;margin:0;color:var(--navy)}.lead{font-size:19px;color:var(--muted);max-width:660px;margin:24px 0 0}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:10px;text-decoration:none;font-weight:800}.primary{background:var(--navy);color:#fff}.secondary{border:1px solid var(--line);color:var(--navy);background:#fff}.code-card{border:1px solid #24465c;border-radius:18px;overflow:hidden;background:#0c2231;color:#e5f5f4;box-shadow:var(--shadow);transform:rotate(1deg)}.code-head{display:flex;align-items:center;gap:7px;background:#102d3e;padding:13px 16px}.code-head span{width:9px;height:9px;border-radius:50%;background:#ee7870}.code-head span:nth-child(2){background:#f2c45d}.code-head span:nth-child(3){background:#63c386}.code-head b{margin-left:auto;font:600 12px ui-monospace,monospace;color:#91aebb}.code-card pre{margin:0;padding:28px 24px;overflow:auto;font:14px/1.8 ui-monospace,monospace}.code-card i{color:#86b9b0}.code-card p{margin:0;padding:16px 22px;border-top:1px solid #24465c;color:#b9ced6;font-size:14px}.section{padding:88px 0}.featured-section{border-top:1px solid var(--line)}.section-heading{max-width:720px;margin-bottom:30px}.section-heading h2{font-size:clamp(30px,4vw,44px);line-height:1.2;letter-spacing:-.04em;color:var(--navy);margin:0}.section-heading>p:last-child{color:var(--muted)}.feature-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.feature-card,.tool-card{display:flex;flex-direction:column;text-decoration:none;color:inherit;border:1px solid var(--line);border-radius:18px;padding:30px;transition:.18s;background:#fff}.feature-card:hover,.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.main-feature{background:linear-gradient(135deg,#102a43,#176b87);color:#fff;border:0}.reference-feature{background:linear-gradient(145deg,#edf9f7,#fff)}.badge{align-self:flex-start;font-size:11px;font-weight:900;letter-spacing:.08em;border-radius:999px;background:rgba(255,255,255,.18);padding:5px 9px}.badge.muted{background:#d8efeb;color:#12655e}.feature-icon{font:700 36px ui-monospace,monospace;margin:50px 0 18px}.feature-card h3,.tool-card h3{font-size:25px;letter-spacing:-.03em;margin:0}.feature-card p{opacity:.82;max-width:530px}.go{margin-top:auto;padding-top:20px;font-weight:900}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-card{min-height:255px}.tool-icon{display:grid;place-items:center;width:50px;height:50px;border-radius:14px;font-weight:900;font-size:22px;margin-bottom:38px}.tool-card p{color:var(--muted);margin:7px 0 22px}.tool-card>span:last-child{margin-top:auto;font-weight:900}.pink .tool-icon{background:#faeaf1;color:var(--pink)}.blue .tool-icon{background:#e6f0f5;color:var(--blue)}.green .tool-icon{background:#e5f4ee;color:var(--green)}.notice{margin:10px 0 90px;border-left:4px solid #c58a12;background:#fff8e8;border-radius:4px 12px 12px 4px;padding:18px 22px;color:#624d1b}.notice strong{display:block;color:#4d390d}.site-footer{border-top:1px solid var(--line);background:var(--soft);display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;padding:44px max(24px,calc((100vw - 1120px)/2));color:var(--muted);font-size:14px}.site-footer p{margin:8px 0}.footer-info strong{color:var(--ink)}.footer-links{display:flex;flex-wrap:wrap;gap:16px;margin:12px 0}.footer-links a{color:var(--blue)}.site-footer small{display:block;max-width:700px}.panel{max-width:900px;margin:52px auto 90px;padding:0 24px}.page-title{margin-bottom:30px}.page-title h1{font-size:clamp(34px,5vw,52px);letter-spacing:-.045em;color:var(--navy);margin:4px 0}.page-title p{color:var(--muted);font-size:17px}.box{border:1px solid var(--line);border-radius:16px;padding:24px;background:#fff;margin:16px 0}.field{display:grid;gap:7px;margin:16px 0}.field label,.label{font-weight:800;color:var(--navy)}input,textarea,select,button{font:inherit}input[type=text],input[type=password],textarea,select{width:100%;border:1px solid #bdcbd3;border-radius:10px;padding:12px 14px;background:#fff;color:var(--ink)}textarea{min-height:230px;resize:vertical;font:14px/1.65 ui-monospace,monospace}.tabs{display:flex;gap:8px;margin-bottom:15px}.tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;cursor:pointer;font-weight:800}.tab.on{background:var(--navy);color:#fff}.upload{border:2px dashed #b7cbd4;border-radius:12px;padding:30px;text-align:center;background:var(--soft)}.preview{max-width:100%;max-height:360px;margin:16px auto 0;display:block;border-radius:8px}.check{display:flex;align-items:flex-start;gap:9px;color:var(--muted);font-size:14px}.action{border:0;background:var(--navy);color:#fff;border-radius:10px;padding:13px 20px;font-weight:900;cursor:pointer}.action:disabled{opacity:.45;cursor:not-allowed}.status{padding:14px;border-radius:10px;background:var(--soft);margin-top:14px}.status.error{background:#fff0f0;color:#9c2525}.result{margin-top:24px}.result section{border-top:1px solid var(--line);padding:20px 0}.result h2,.result h3{color:var(--navy)}.result pre{white-space:pre-wrap;background:#0c2231;color:#e5f5f4;border-radius:10px;padding:16px;overflow:auto}.result table{width:100%;border-collapse:collapse}.result th,.result td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:10px}.legal h1{color:var(--navy);font-size:40px}.legal h2{margin-top:35px;color:var(--navy)}.legal .effective{color:var(--muted)}
@media(max-width:760px){.topbar{align-items:flex-start;padding-top:14px;padding-bottom:10px;flex-direction:column;gap:5px}nav{width:100%;padding-bottom:2px}.hero{grid-template-columns:1fr;gap:38px;padding:55px 0}.code-card{transform:none}.feature-grid,.tool-grid,.site-footer{grid-template-columns:1fr}.section{padding:65px 0}.feature-card{min-height:290px}.tool-card{min-height:220px}.site-footer{gap:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.feature-card,.tool-card{transition:none}}