:root{font-family:Inter,Pretendard,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#18233b;background:#f3f6fb;font-synthesis:none;font-size:16px}
*{box-sizing:border-box}body{margin:0;min-width:0}header,main{max-width:720px;margin:auto;padding:0 20px}header{min-height:72px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 12px;padding-top:12px;padding-bottom:12px}.brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none;font-size:19px;font-weight:800;letter-spacing:-.04em;min-width:0}.mark{display:grid;place-items:center;background:#2447e8;color:white;border-radius:10px;width:34px;height:34px;font-size:25px}#theme-select{font:inherit;font-size:.875rem;min-height:44px;max-width:100%;padding:8px 10px;border:1px solid #bcc8db;border-radius:12px;background:#fff;color:#18233b;cursor:pointer;margin-left:auto}.intro{padding:8px 0 18px}.intro h1{font-size:1.55rem;line-height:1.35;margin:0;letter-spacing:-.04em}.panel{background:white;border:1px solid #e1e6ef;border-radius:18px;padding:24px;min-width:0;overflow-wrap:anywhere}form{min-width:0;max-width:100%}label{display:block;font-size:.9375rem;font-weight:650;margin:0 0 8px}textarea{display:block;box-sizing:border-box;font:inherit;line-height:1.55;width:100%;max-width:100%;min-width:0;min-height:152px;padding:13px 15px;border:1px solid #bcc8db;border-radius:12px;color:#18233b;background:#fff;resize:vertical}textarea::placeholder{color:#788398;opacity:1}textarea:focus{outline:3px solid #adc0ff;outline-offset:2px;border-color:#2447e8}textarea[aria-invalid="true"]{border-color:#b12f3c}button{font:inherit;cursor:pointer;border:0;border-radius:12px;min-height:44px;font-weight:650}button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible{outline:3px solid #2447e8;outline-offset:4px}button:disabled{cursor:default;opacity:.7}.primary{background:#2447e8;color:white;width:100%;padding:15px;margin-top:7px}.primary:not(:disabled):hover{background:#1838c5}.primary:disabled{background:#788398}.text-btn{background:transparent;color:#2447e8;font-size:.875rem;padding:4px 0}.text-btn:disabled{color:#647089;opacity:.7}.hint{font-size:.875rem;color:#5f6d83;line-height:1.6;margin:7px 0 12px}.pool-row{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:0 12px;margin-top:6px}.pool-summary{margin:0;font-size:.875rem;font-weight:650;line-height:1.6}.error{font-size:.875rem;color:#b12f3c;margin:10px 0;line-height:1.6}.error:empty{margin:0}.instant-result{margin:20px -24px -24px;padding:22px 24px;background:#eaf0ff;border-top:1px solid #d8e1fb;border-radius:0 0 17px 17px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}h2{font-size:1.125rem;margin:0;letter-spacing:-.03em}.pill{font-size:.8125rem;background:#fff;padding:7px 10px;border-radius:20px;color:#405687;white-space:nowrap}.big-number{font-size:clamp(2rem,9vw,3.5rem);font-weight:800;letter-spacing:-.055em;line-height:1.3;overflow-wrap:anywhere;white-space:pre-wrap;unicode-bidi:plaintext;color:#1937b2}.result-caption{color:#405687;font-size:.875rem;margin:8px 0 4px;line-height:1.7}.secondary{background:#fff;color:#1937b2;border:1px solid #bdccef;width:100%;margin-top:16px;padding:10px 14px}.secondary:not(:disabled):hover{background:#f5f8ff}.secondary:disabled{opacity:.75}.status{font-size:.875rem;color:#586888;line-height:1.6;margin:12px 0 0}.status:empty{display:none}.calculation-help{padding:18px 0;font-size:.875rem;color:#586888}details{width:100%}summary{cursor:pointer;width:fit-content;line-height:1.6}details p{font-size:.875rem;line-height:1.7;margin:10px 0}footer{border-top:1px solid #dce3ed;padding:20px 0 32px;display:flex;flex-wrap:wrap;gap:12px 24px;color:#647089;font-size:.875rem}footer>span:first-child{font-weight:800;color:#27334b}footer details p{font-size:.8125rem}[hidden]{display:none!important}
html[data-theme="dark"]{background:#10141d;color:#e7edf8}html[data-theme="dark"] #theme-select{background:#191f2c;color:#e7edf8;border-color:#54617a}html[data-theme="dark"] .panel{background:#191f2c;border-color:#323b50}html[data-theme="dark"] textarea{background:#111827;color:#f2f5ff;border-color:#54617a}html[data-theme="dark"] textarea::placeholder{color:#98a6bf}html[data-theme="dark"] .big-number{color:#a9c0ff}html[data-theme="dark"] .pill{background:#293857;color:#cedbfa}html[data-theme="dark"] .hint,html[data-theme="dark"] footer,html[data-theme="dark"] .calculation-help,html[data-theme="dark"] .status{color:#b5c0d3}html[data-theme="dark"] .text-btn{color:#abc0ff}html[data-theme="dark"] .brand{color:#e7edf8}html[data-theme="dark"] .result-caption{color:#bbcbed}html[data-theme="dark"] .primary{background:#4564ef}html[data-theme="dark"] .primary:disabled{background:#54617a}html[data-theme="dark"] .primary:not(:disabled):hover{background:#3653d8}html[data-theme="dark"] .secondary{background:#293651;color:#e3ebff;border-color:#546b97}html[data-theme="dark"] .secondary:not(:disabled):hover{background:#35486b}html[data-theme="dark"] footer{border-color:#3b4964}html[data-theme="dark"] footer>span:first-child{color:#e7edf8}html[data-theme="dark"] .error{color:#ffacb6}html[data-theme="dark"] textarea[aria-invalid="true"]{border-color:#ffacb6}html[data-theme="dark"] .instant-result{background:#182544;border-color:#324977}html[data-theme="dark"] .text-btn:disabled{color:#8997b0}
@media(max-width:420px){header,main{padding-left:16px;padding-right:16px}.panel{padding:20px}.intro h1{font-size:1.4rem}.instant-result{margin-left:-20px;margin-right:-20px;margin-bottom:-20px;padding:20px}.instant-result h2{font-size:1rem}}
@media(prefers-reduced-motion:no-preference){button{transition:background .15s}}
.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}