:root{--isd-navy:#102a43;--isd-blue:#165dba;--isd-coral:#f06f5c;--isd-ivory:#fffaf1;--isd-ink:#17212b;--isd-muted:#637083;--isd-line:#dce4ec;--isd-green:#128c5e}
.isdlt{font-family:"Nunito Sans","Noto Sans KR",system-ui,sans-serif;color:var(--isd-ink);max-width:1080px;margin:32px auto;padding:0 18px;box-sizing:border-box}.isdlt *{box-sizing:border-box}.isdlt-shell{background:#f6f9fc;border:1px solid #e1e8f0;border-radius:28px;overflow:hidden;box-shadow:0 22px 65px rgba(16,42,67,.12)}
.isdlt-hero{position:relative;text-align:center;padding:58px 8%;background:radial-gradient(circle at 88% 5%,rgba(240,111,92,.24),transparent 29%),radial-gradient(circle at 8% 90%,rgba(63,131,248,.22),transparent 30%),linear-gradient(145deg,#fffaf1,#fff 54%,#eef6ff)}.isdlt-brand{font-size:22px;letter-spacing:.13em;font-weight:900;color:var(--isd-navy)}.isdlt-brand span{display:block;font-size:9px;letter-spacing:.25em;margin-top:3px}.isdlt-lang{position:absolute;right:24px;top:20px;background:white;border:1px solid var(--isd-line);border-radius:99px;padding:3px}.isdlt-lang button{border:0;background:transparent;border-radius:99px;padding:7px 9px;font-weight:700;color:var(--isd-muted);cursor:pointer}.isdlt-lang button.active{background:var(--isd-navy);color:white}.isdlt-eyebrow{margin:44px 0 10px;color:var(--isd-coral);font-size:12px;font-weight:900;letter-spacing:.16em}.isdlt-hero h1{font-size:clamp(34px,5vw,60px);line-height:1.08;max-width:720px;margin:0 auto 20px;color:var(--isd-navy);letter-spacing:-.035em}.isdlt-hero>p:not(.isdlt-eyebrow){max-width:650px;margin:0 auto 22px;color:var(--isd-muted);font-size:18px;line-height:1.7}.isdlt-pills{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:26px 0}.isdlt-pills span{background:white;border:1px solid var(--isd-line);border-radius:99px;padding:9px 14px;font-size:13px;font-weight:800}.isdlt-hero small{display:block;color:var(--isd-muted);margin-top:14px}
.isdlt-primary,.isdlt-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:52px;border-radius:13px;padding:0 25px;font-size:16px;font-weight:900;text-decoration:none!important;cursor:pointer}.isdlt-primary{border:0;background:linear-gradient(135deg,var(--isd-blue),#0f438c);color:#fff!important;box-shadow:0 9px 24px rgba(22,93,186,.22)}.isdlt-primary:hover{transform:translateY(-1px)}.isdlt-primary:disabled{opacity:.38;cursor:not-allowed;transform:none}.isdlt-secondary{border:1px solid var(--isd-line);background:white;color:var(--isd-navy)!important}.isdlt-link{border:0;background:transparent;color:var(--isd-blue);font-weight:800;cursor:pointer;padding:10px}
.isdlt-app{padding:34px;min-height:560px}.isdlt-card{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--isd-line);border-radius:20px;padding:34px;box-shadow:0 9px 30px rgba(16,42,67,.07)}.isdlt-step,.isdlt-meta{font-size:12px;text-transform:uppercase;letter-spacing:.1em;font-weight:900;color:var(--isd-coral)}.isdlt-card h2{color:var(--isd-navy);font-size:28px;line-height:1.45;margin:9px 0 28px}.isdlt-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.isdlt-grid label{display:grid;gap:7px;color:var(--isd-navy);font-size:13px;font-weight:800}.isdlt-grid .wide{grid-column:1/-1}.isdlt-grid input,.isdlt-grid select{width:100%;height:49px;border:1px solid #cbd7e3;border-radius:10px;padding:0 13px;font:inherit;background:#fff}.isdlt-grid input:focus,.isdlt-grid select:focus{outline:3px solid rgba(22,93,186,.15);border-color:var(--isd-blue)}.isdlt-check{display:flex!important;grid-template-columns:auto 1fr!important;align-items:flex-start!important;line-height:1.5;color:var(--isd-muted)!important}.isdlt-check input{width:18px;height:18px;margin-top:2px}.isdlt-error{color:#b42318;font-weight:800}.isdlt-grid+.isdlt-error+.isdlt-primary{margin-top:24px;width:100%}
.isdlt-testhead{max-width:760px;margin:0 auto 10px;display:flex;align-items:center;justify-content:space-between;color:var(--isd-muted);font-size:13px;font-weight:800}.isdlt-progress{max-width:760px;margin:0 auto 18px;background:#dae4ee;height:7px;border-radius:99px;overflow:hidden}.isdlt-progress i{display:block;height:100%;background:linear-gradient(90deg,var(--isd-coral),var(--isd-blue));transition:width .25s}.isdlt-meta{display:flex;justify-content:space-between}.isdlt-meta span:first-child{color:var(--isd-blue)}.isdlt-audio{border:1px solid #bbd3ef;background:#eef6ff;color:var(--isd-blue);font-weight:900;border-radius:12px;padding:13px 18px;margin-top:22px;cursor:pointer}.isdlt-audio small{color:var(--isd-muted)}.isdlt-options{display:grid;gap:11px;margin-bottom:26px}.isdlt-options button{display:grid;grid-template-columns:40px 1fr;align-items:center;text-align:left;min-height:58px;border:1px solid var(--isd-line);background:white;border-radius:13px;padding:9px;cursor:pointer;font-size:16px;color:var(--isd-ink)}.isdlt-options button:hover,.isdlt-options button.selected{border-color:var(--isd-blue);background:#f0f6ff;box-shadow:0 0 0 2px rgba(22,93,186,.08)}.isdlt-options b{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:#edf1f5;color:var(--isd-navy)}.isdlt-options button.selected b{background:var(--isd-blue);color:white}.isdlt-question>.isdlt-primary{width:100%}
.isdlt-loading{text-align:center;padding:100px 20px}.isdlt-spinner{width:50px;height:50px;border:5px solid #dfe8f1;border-top-color:var(--isd-blue);border-radius:50%;animation:isdspin .8s linear infinite;margin:auto}@keyframes isdspin{to{transform:rotate(360deg)}}
.isdlt-result{max-width:780px;margin:auto}.isdlt-resulttop{text-align:center;background:linear-gradient(135deg,var(--isd-navy),#174f86);color:white;padding:40px 20px 70px;border-radius:20px 20px 0 0}.isdlt-resulttop>span{font-size:11px;letter-spacing:.18em;color:#8fc5ff;font-weight:900}.isdlt-resulttop h2{font-size:18px;margin:9px}.isdlt-level{font-size:clamp(29px,6vw,48px);font-weight:900}.isdlt-score{display:flex;flex-direction:column;margin-top:13px}.isdlt-score strong{font-size:28px}.isdlt-score span{font-size:12px;color:#b9d9f4}.isdlt-result .isdlt-card{margin-top:-35px}.isdlt-bars{display:grid;gap:17px}.isdlt-bars label{display:flex;justify-content:space-between;font-size:13px;margin-bottom:6px}.isdlt-bars i{display:block;height:10px;background:#e8eef4;border-radius:99px;overflow:hidden}.isdlt-bars em{display:block;height:100%;background:linear-gradient(90deg,var(--isd-blue),#51a1ef);border-radius:99px}.isdlt-insights{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0}.isdlt-insights p{display:flex;flex-direction:column;background:var(--isd-ivory);padding:15px;border-radius:11px;margin:0}.isdlt-insights span,.isdlt-course small{font-size:11px;color:var(--isd-muted);text-transform:uppercase;font-weight:900}.isdlt-course{border-left:4px solid var(--isd-coral);background:#fff8f5;padding:18px 20px;margin:20px 0}.isdlt-course h3{margin:4px 0;color:var(--isd-navy)}.isdlt-course p{color:var(--isd-muted);margin-bottom:0}.isdlt-actions{display:grid;gap:10px}.isdlt-actions .isdlt-link{margin-top:5px}
@media(max-width:640px){.isdlt{margin:12px auto;padding:0 8px}.isdlt-shell{border-radius:18px}.isdlt-hero{padding:88px 20px 38px}.isdlt-lang{right:12px;top:14px}.isdlt-brand{font-size:18px}.isdlt-hero h1{font-size:36px}.isdlt-hero>p:not(.isdlt-eyebrow){font-size:15px}.isdlt-app{padding:16px 10px;min-height:520px}.isdlt-card{padding:22px 17px;border-radius:16px}.isdlt-card h2{font-size:21px}.isdlt-grid{grid-template-columns:1fr}.isdlt-grid .wide{grid-column:auto}.isdlt-options button{font-size:15px}.isdlt-insights{grid-template-columns:1fr}.isdlt-result .isdlt-card{margin-left:8px;margin-right:8px}.isdlt-primary,.isdlt-secondary{width:100%}}
@media(prefers-reduced-motion:reduce){.isdlt *{scroll-behavior:auto!important;animation:none!important;transition:none!important}}