:root{
  --vh: 1vh;
  --bg:#f7f7f8; --card:#ffffff; --ink:#222; --muted:#6b7280;
  --ok:#16a34a; --warn:#dc2626; --neutral:#111;
  --blue:#0ea5e9; --orange:#fb923c; --black:#111111; --ring: rgba(14,165,233,.35);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family: ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,AppleSDGothicNeo,"Noto Sans KR","Malgun Gothic",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}

.site-header{max-width:960px;margin:16px auto 8px;padding:0 16px}
.site-header h1{margin:0 0 6px;font-size:28px;font-weight:800}
.site-header .brand{font-weight:700; color:#6b7280}
.site-header .subtitle{margin:0;color:var(--muted);font-size:14px}

.container{max-width:960px;margin:16px auto 32px;background:var(--card);padding:16px;border-radius:14px;box-shadow:0 8px 24px rgba(0,0,0,.06)}

select,.btn{height:36px;border-radius:10px;border:1px solid #e5e7eb;padding:0 12px;background:#fff;font-weight:600;cursor:pointer}
.btn:hover{box-shadow:0 0 0 4px var(--ring)}
.btn-secondary{background:#f3f4f6}
.btn-ghost{background:transparent;border-color:transparent;color:#374151}
.btn-ghost:hover{background:#f3f4f6}

.btn:focus-visible,
select:focus-visible,
input[type="number"]:focus-visible{
  outline:0;
  box-shadow:0 0 0 4px rgba(14,165,233,.55);
  border-color:#60a5fa;
}

/* Inputs */
.form-cartax fieldset{border:none;margin:0 0 12px;padding:12px;background:#f3f4f6;border-radius:12px}
.form-cartax legend{font-weight:800;margin-bottom:6px}
.form-cartax label{display:inline-flex;gap:6px;align-items:center;margin-right:12px}
#logPercentWrap{margin-top:10px} #logPercentRange{width:220px}
.percent-input{display:inline-flex;gap:6px;align-items:center;margin-left:8px}

/* 🔧 토글용 */
.hidden{display:none !important;}

.method-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.method{background:#f3f4f6;padding:12px;border-radius:12px}
.method h2{margin:0 0 8px;font-size:16px}
.hint{margin:6px 0 0;color:var(--muted);font-size:12px}

.input-unit{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}
.input-unit input[type="number"]{padding:10px 40px 10px 12px;border:1px solid #d1d5db;border-radius:10px;font-size:14px;background:#fff}
.input-unit input[type="number"]:focus{box-shadow:0 0 0 4px var(--ring);border-color:#93c5fd}
.input-unit .unit{position:relative;align-self:flex-end;margin-top:-34px;margin-right:12px;font-size:12px;color:#6b7280;pointer-events:none}

/* Results */
.result-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;border-top:1px solid #e5e7eb;padding-top:16px;margin-top:16px}
.result-overview{background:#f9fafb;border-radius:14px;padding:12px;border:1px solid #e5e7eb}
.result-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.result-head h3{margin:0;font-size:16px;line-height:1.2;display:flex;flex-direction:column;word-break:keep-all}
.result-head .title-main{white-space:nowrap}
.result-head .title-sub{display:block;margin-top:2px}
.pill-row{display:flex;gap:6px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border-radius:999px;font-size:12px;font-weight:700}
.pill.ok{background:rgba(22,163,74,.1);color:var(--ok)}
.pill.warn{background:rgba(220,38,38,.10);color:var(--warn)}
.pill.neutral{background:rgba(17,17,17,.10);color:var(--neutral)}

.result-grid{display:grid;grid-template-columns:auto 1fr;gap:6px 12px}
.result-grid dt{font-weight:700;font-size:13px}
.result-grid dd{margin:0;text-align:right;font-weight:800;font-size:13px}
.red{color:var(--warn)}

.color-lumpsum{border-top:3px solid var(--blue)}
.color-lease{border-top:3px solid var(--orange)}
.color-rent{border-top:3px solid var(--black)}

/* Glossary + note */
.glossary{border-top:1px solid #e5e7eb;margin-top:16px;padding-top:12px}
.glossary ul{margin:0;padding-left:16px}
.glossary li{font-size:13px}
.small.note{color:#6b7280;font-size:12px;margin-top:6px}

/* 자연어 요약 박스 */
.nl-summary{margin-top:8px;padding:10px 12px;background:#f3f4f6;border-radius:10px}
.nlp{margin:0;color:#374151;font-size:13px;line-height:1.7}
.nlp b{font-weight:800}

/* 겟차 배너 */
.cta-banner{margin: 12px auto 16px;text-align:center}
.cta-banner picture,.cta-banner img{display:block;margin:0 auto;max-width:960px;width:100%;height:auto;border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,.12)}
.cta-banner .cta-link{display:inline-block;text-decoration:none}

/* 영상 섹션 */
.video-wrap {margin-top:40px;padding-top:20px;border-top:1px solid #e5e7eb}
.video-wrap h2 {font-size:18px;font-weight:700;margin-bottom:16px}
.video-grid {display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.video-box {position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,0.1)}
.video-box iframe {position:absolute;top:0;left:0;width:100%;height:100%}

/* Modal */
dialog{border:none;border-radius:14px;max-width:720px;width:calc(100% - 24px);padding:0;box-shadow:0 20px 40px rgba(0,0,0,.25)}
dialog::backdrop{background:rgba(0,0,0,.45)}
.modal{padding:16px}
.modal h3{margin:0 0 8px}
.basis-list{margin:8px 0 12px;padding-left:16px}
.code{background:#111;color:#eee;padding:12px;border-radius:8px;overflow:auto;font-size:12px}
.small{color:var(--muted);font-size:12px}

/* Toast */
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#111;color:#fff;padding:10px 14px;border-radius:999px;font-weight:700;opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:1000}
#toast.show{opacity:1}

/* A11y */
.sr-only{position:absolute;left:-9999px}

/* Responsive */
@media (max-width: 768px){
  .site-header{margin:8px auto 4px;padding:0 12px}
  .site-header h1{font-size:clamp(20px, 5vw, 24px)}
  .site-header .subtitle{font-size:12px}

  .container{margin:8px auto 16px;padding:12px;border-radius:12px}

  select,.btn{flex:1 1 auto; min-width:calc(50% - 6px); height:40px; font-size:14px}

  .method-wrap{grid-template-columns:1fr; gap:10px}
  .method{padding:10px;border-radius:10px}
  .method h2{font-size:15px}
  .hint{font-size:11px}

  .input-unit{gap:4px; margin-bottom:8px}
  .input-unit input[type="number"]{font-size:16px; padding:12px 44px 12px 12px}
  .input-unit .unit{margin-top:-38px}

  .result-wrap{grid-template-columns:1fr; gap:10px; padding-top:12px}
  .result-overview{padding:10px;border-radius:12px}
  .result-head h3{font-size:15px}
  .pill{font-size:11px; padding:4px 8px}
  .result-grid{gap:4px 10px}
  .result-grid dt{font-size:12px}
  .result-grid dd{font-size:14px}

  .cta-banner picture,.cta-banner img{ border-radius:10px; }
  .video-grid{grid-template-columns:1fr}
  dialog{max-width:none; width:calc(100% - 16px); margin:0 auto; border-radius:12px}
  .modal{padding:12px}
  .code{font-size:11px}
}
@media (max-width: 360px){ select,.btn{min-width:100%} }