:root {
  --font: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", system-ui, sans-serif;
  --bg: #f3f4f7; --paper: #fff; --ink: #151824; --ink-2: #555b70; --line: #d9dce6;
  --accent: #2b4acb; --accent-ink: #fff; --accent-soft: #e6eafb;
  --good: #1d7a4d; --mid: #b7791f; --low: #b4442b;
  --radius: 14px; color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #11131a; --paper: #1a1d27; --ink: #eceef6; --ink-2: #aeb3c6; --line: #323649;
    --accent: #8ea2ff; --accent-ink: #0b1030; --accent-soft: #232b52; --good: #52c58a; --mid: #e6a23c; --low: #f0866c; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); background: var(--bg); color: var(--ink); line-height: 1.6; overflow-x: hidden; word-break: keep-all; overflow-wrap: anywhere; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 8px; top: 8px; background: var(--paper); padding: 8px; z-index: 9; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.wrap, .hero, .foot { max-width: 880px; margin: 0 auto; padding: 0 16px; }
.hero { padding-top: 28px; padding-bottom: 4px; }
.eyebrow { margin: 0; color: var(--accent); font-weight: 700; font-size: 14px; }
h1 { font-size: clamp(28px, 7vw, 40px); line-height: 1.25; margin: 6px 0 10px; letter-spacing: -0.02em; }
.lede { margin: 0; color: var(--ink-2); max-width: 44em; }
.notice { margin: 12px 0 0; padding: 8px 12px; border-left: 4px solid var(--mid); font-size: 14px; color: var(--ink-2); }
h2 { font-size: 18px; margin: 0 0 12px; }
.panel, .result, .guide { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin: 16px 0; }
.muted { color: var(--ink-2); font-size: 14px; margin: 8px 0 0; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 14px; color: var(--ink-2); min-width: 0; }
input, button { font: inherit; font-size: 16px; }
input[type=text] { min-height: 44px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--ink); width: 100%; min-width: 0; }
input:focus-visible, button:focus-visible, summary:focus-visible, .segopt:focus-within, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.segopt { position: relative; cursor: pointer; }
.segopt input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.segopt span { display: flex; flex-direction: column; min-height: 56px; justify-content: center; padding: 8px 14px; border: 1px solid var(--line); border-radius: 12px; font-weight: 700; color: var(--ink); }
.segopt small { font-weight: 400; color: var(--ink-2); font-size: 13px; }
.segopt input:checked + span { border-color: var(--accent); background: var(--accent-soft); box-shadow: inset 4px 0 0 var(--accent); }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; padding-bottom: 6px; margin-bottom: 8px; scrollbar-width: thin; }
.tab { flex: 0 0 auto; min-width: 56px; min-height: 44px; padding: 6px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--ink-2); font-weight: 700; cursor: pointer; }
.tab[aria-selected=true] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.rowhead, .row { display: grid; grid-template-columns: minmax(0, 1fr) 64px 64px 44px; gap: 8px; align-items: center; }
.rowhead { font-size: 13px; color: var(--ink-2); margin-bottom: 4px; }
.rows { list-style: none; margin: 0 0 12px; padding: 0; display: grid; gap: 8px; }
.row input.bad { border-color: var(--low); box-shadow: inset 0 0 0 1px var(--low); }
.del { min-width: 44px; min-height: 44px; border: 1px solid var(--line); border-radius: 10px; background: transparent; color: var(--ink-2); cursor: pointer; font-size: 18px; line-height: 1; }
.btn { min-height: 48px; padding: 10px 18px; border-radius: 12px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); font-weight: 700; cursor: pointer; }
.btn.ghost { border-style: dashed; color: var(--ink-2); font-weight: 500; }
.err { margin: 8px 0 0; color: var(--low); font-size: 14px; min-height: 0; }
.big { border-left: 6px solid var(--line); padding: 8px 14px; display: grid; gap: 0; }
.big span { font-size: 13px; color: var(--ink-2); }
.big strong { font-size: clamp(36px, 11vw, 56px); line-height: 1.1; font-variant-numeric: tabular-nums; }
.big em { font-style: normal; font-size: 14px; color: var(--ink-2); }
.big.small strong { font-size: clamp(30px, 9vw, 44px); }
.big.good { border-color: var(--good); } .big.good strong { color: var(--good); }
.big.mid { border-color: var(--mid); } .big.mid strong { color: var(--mid); }
.big.low { border-color: var(--low); } .big.low strong { color: var(--low); }
.sems { list-style: none; margin: 14px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.sems li { border-top: 3px solid var(--line); padding: 6px 4px 0; font-size: 13px; color: var(--ink-2); }
.sems li strong { display: block; font-size: 20px; color: var(--ink); font-variant-numeric: tabular-nums; }
.sems li.good { border-color: var(--good); } .sems li.mid { border-color: var(--mid); } .sems li.low { border-color: var(--low); }
.conv { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-bottom: 14px; }
.actions { margin: 16px 0; }
.guide ol, .guide ul { padding-left: 1.3em; } .guide li { margin: 6px 0; }
.guide a { color: var(--accent); }
details { border-top: 1px solid var(--line); padding: 4px 0; }
summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; font-weight: 700; }
details p { margin: 0 0 10px; color: var(--ink-2); }
.foot { padding-bottom: 32px; color: var(--ink-2); font-size: 14px; }
.foot a { color: var(--accent); }
@media (min-width: 600px) and (max-width: 1279px) {
  .sems { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .rowhead, .row { grid-template-columns: minmax(0, 1fr) 96px 96px 44px; }
}
@media (min-width: 1280px) {
  .sems { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .rowhead, .row { grid-template-columns: minmax(0, 1fr) 120px 120px 44px; }
}
@media (max-width: 380px) { .rowhead, .row { grid-template-columns: minmax(0, 1fr) 56px 56px 44px; gap: 6px; } }