:root {
  --paper: #F3F6F5; --card: #FFFFFF; --sunk: #EAF0EE; --ink: #15222C; --ink2: #3C4D57; --muted: #62737B;
  --line: #D3DDDA; --teal: #0B6E64; --teal-ink: #FFFFFF; --teal-soft: #DCEEEA; --stamp: #C4362B;
  --ok: #23734A; --warn: #8F5B0C; --warn-bg: #FBEFD6; --bad: #B42318; --focus: #1E6FD9;
  --shadow: 0 1px 2px rgba(21, 34, 44, .06), 0 4px 14px rgba(21, 34, 44, .05);
  --f-display: "Do Hyeon", "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --f-body: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #0F161A; --card: #162127; --sunk: #1B2A31; --ink: #E4ECEA; --ink2: #BFCCCB; --muted: #8FA2A8;
    --line: #2B3B43; --teal: #3FB2A2; --teal-ink: #062421; --teal-soft: #173934; --stamp: #E4685C;
    --ok: #6FCB97; --warn: #E6B45A; --warn-bg: #33280F; --bad: #F08A80; --focus: #6AA8FF;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 18px rgba(0,0,0,.25);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #0F161A; --card: #162127; --sunk: #1B2A31; --ink: #E4ECEA; --ink2: #BFCCCB; --muted: #8FA2A8;
  --line: #2B3B43; --teal: #3FB2A2; --teal-ink: #062421; --teal-soft: #173934; --stamp: #E4685C;
  --ok: #6FCB97; --warn: #E6B45A; --warn-bg: #33280F; --bad: #F08A80; --focus: #6AA8FF;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 18px rgba(0,0,0,.25);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--f-body); font-size: 16px; line-height: 1.65; word-break: keep-all; overflow-wrap: anywhere; }
h1, h2, h3 { margin: 0; line-height: 1.3; text-wrap: balance; }
p { margin: 0; }
a { color: var(--teal); }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }

.wrap { max-width: 1040px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
.masthead { border-bottom: 1px solid var(--line); padding: 12px 0; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand b { font-family: var(--f-display); font-weight: 400; font-size: 24px; }
.brand small { color: var(--muted); font-size: 13px; }
.seal { display: inline-grid; place-items: center; width: 30px; height: 30px; border: 2px solid var(--stamp); color: var(--stamp); border-radius: 6px; font-family: var(--f-display); font-size: 13px; line-height: 1; transform: rotate(-6deg); }

.eyebrow { display: block; font-size: 13px; font-weight: 600; letter-spacing: .02em; color: var(--teal); margin-bottom: 10px; }
.hero { padding-top: 56px; padding-bottom: 48px; }
.hero h1 { font-family: var(--f-display); font-weight: 400; font-size: clamp(32px, 5.4vw, 52px); line-height: 1.2; }
.hero h1 em { font-style: normal; color: var(--stamp); }
.lead { margin-top: 18px; max-width: 640px; font-size: 18px; color: var(--ink2); }
.hero-cta { margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); font-weight: 600; text-decoration: none; cursor: pointer; }
.btn.primary { background: var(--teal); color: var(--teal-ink); border-color: var(--teal); }
.btn.primary:hover { filter: brightness(1.08); }

.band { padding-top: 40px; padding-bottom: 40px; border-top: 1px solid var(--line); }
.band h2 { font-family: var(--f-display); font-weight: 400; font-size: clamp(24px, 3.6vw, 32px); margin-bottom: 20px; }
.cards3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 10px; }
.card-n { font-family: var(--f-mono); font-weight: 600; color: var(--stamp); }
.card h3 { font-size: 18px; }
.card p { color: var(--ink2); font-size: 15px; }
.card .src { margin-top: auto; padding-top: 8px; border-top: 1px dashed var(--line); font-size: 13px; color: var(--muted); }

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: s; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 44px 88px 1fr; gap: 4px 12px; align-items: baseline; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
.steps li::before { content: counter(s); font-family: var(--f-mono); font-weight: 600; color: var(--teal); font-size: 20px; }
.steps b { font-family: var(--f-display); font-weight: 400; font-size: 22px; }
.steps span { color: var(--ink2); }
.steps em { font-style: normal; font-weight: 600; color: var(--ink); }
@media (max-width: 600px) { .steps li { grid-template-columns: 32px 1fr; } .steps span { grid-column: 1 / -1; } }

.panel { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); margin-top: 16px; }
.diag > p { max-width: 640px; }
.field { display: grid; gap: 6px; margin-bottom: 18px; font-weight: 600; }
.field select { min-height: 46px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); padding: 0 12px; max-width: 420px; }
.q { border: 0; border-top: 1px solid var(--line); margin: 0; padding: 14px 0; }
.q legend { padding: 0; display: flex; gap: 10px; font-weight: 500; }
.qn { color: var(--teal); font-weight: 600; flex: none; }
.opts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; padding-left: 22px; }
.opt { position: relative; }
.opt input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.opt span { display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px; border: 1px solid var(--line); border-radius: 999px; background: var(--paper); }
.opt input:checked + span { background: var(--teal); color: var(--teal-ink); border-color: var(--teal); font-weight: 600; }
.opt input:focus-visible + span { outline: 2px solid var(--focus); outline-offset: 2px; }
.form-msg { color: var(--bad); font-weight: 600; margin: 4px 0 12px; }

.result { display: grid; gap: 16px; }
.result:focus { outline: none; }
.score-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.score { font-size: 56px; font-weight: 600; line-height: 1; }
.score small { font-size: 20px; color: var(--muted); }
.score-row p { flex: 1; min-width: 220px; }
.bars { display: grid; gap: 8px; }
.bar-row { display: grid; grid-template-columns: 128px 1fr 40px; gap: 10px; align-items: center; font-size: 14px; }
.bar-track { height: 10px; background: var(--sunk); border-radius: 999px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 999px; }
.bar-fill.lv2 { background: var(--ok); } .bar-fill.lv1 { background: var(--warn); } .bar-fill.lv0 { background: transparent; }
.bar-row .v { color: var(--muted); text-align: right; }
.note { background: var(--sunk); border-radius: 10px; padding: 12px 14px; font-size: 15px; }
.note.warn { background: var(--warn-bg); }
.note b { margin-right: 6px; }
.next { border-top: 1px solid var(--line); padding-top: 14px; display: grid; gap: 4px; }
.next p { color: var(--ink2); }
.next .btn { margin-top: 8px; }
.foot-cta { margin-bottom: 8px; }

.foot { border-top: 1px solid var(--line); padding-top: 24px; padding-bottom: 40px; margin-top: 24px; font-size: 14px; color: var(--muted); }