:root {
  --bg: #f3f4f6; --card: #ffffff; --ink: #15181d; --muted: #5b626d; --line: #e2e5e9;
  --ok: #0a7146; --ok-bg: #e7f4ec; --bad: #b4232a; --bad-bg: #fbeaea; --focus: #2f5bd3;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  font-size: 16px; line-height: 1.55; word-break: keep-all;
}
a { color: inherit; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* 앱 화면 */
.app { max-width: 440px; margin: 0 auto; min-height: 100dvh; background: var(--card); display: flex; flex-direction: column; }
.appbar { position: sticky; top: 0; z-index: 2; background: var(--card); border-bottom: 1px solid var(--line);
          padding: 14px 18px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.appbar h1 { font-size: 17px; margin: 0; letter-spacing: -0.2px; }
.appbar .me { font-size: 13px; color: var(--muted); text-align: right; }
.appbar a.back { text-decoration: none; font-size: 14px; color: var(--muted); }
.demo-note { font-size: 12px; color: var(--muted); background: var(--bg); padding: 7px 18px; border-bottom: 1px solid var(--line); }
.view { padding: 20px 18px 28px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.hidden { display: none !important; }

.btn { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; min-height: 52px; padding: 12px 16px;
       border-radius: 12px; border: 1px solid var(--line); background: var(--card); font-weight: 600; font-size: 16px; text-decoration: none; }
.btn.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn.ghost { border: none; background: none; min-height: 40px; color: var(--muted); font-weight: 500; }
.btn:disabled { opacity: .45; cursor: default; }
.btn .sub { font-weight: 400; font-size: 13px; opacity: .8; }
.tiles { display: grid; gap: 10px; }
.tile { display: block; text-decoration: none; color: inherit; text-align: left; padding: 18px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--card); }
.tile b { display: block; font-size: 17px; margin-bottom: 2px; }
.tile span { color: var(--muted); font-size: 14px; }
.tile.dark { background: var(--ink); color: #fff; border-color: var(--ink); }
.tile.dark span { color: #c9ced6; }

.idcard { display: grid; grid-template-columns: 72px 1fr; gap: 14px; align-items: center; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); }
.idcard .photo { width: 72px; height: 90px; border-radius: 8px; background: #eef0f3; }
.idcard b { font-size: 18px; }
.idcard .org { color: var(--muted); font-size: 14px; }
.label { font-size: 13px; color: var(--muted); margin-bottom: -6px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 14px; font-weight: 600; }
.field input { padding: 13px 14px; border: 1px solid #cdd2d8; border-radius: 10px; font-size: 17px; background: #fff; }
.field input.code { font-size: 28px; letter-spacing: 10px; text-align: center; font-variant-numeric: tabular-nums; }
.check { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; }
.check input { width: 20px; height: 20px; margin-top: 2px; }
.check small { display: block; color: var(--muted); }
.hint { font-size: 14px; color: var(--muted); margin: 0; }

.qrwrap { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 8px 0; }
.qrwrap svg { width: min(78vw, 300px); height: auto; aspect-ratio: 1; }
.timer { font-variant-numeric: tabular-nums; font-size: 14px; color: var(--muted); }
.bigcode { text-align: center; font-size: 44px; font-weight: 700; letter-spacing: 8px; font-variant-numeric: tabular-nums; padding: 14px 0 6px; }
.bar { height: 4px; border-radius: 4px; background: var(--line); overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--ink); transition: width 1s linear; }

.cam { position: relative; border-radius: var(--radius); overflow: hidden; background: #000; aspect-ratio: 3 / 4; }
.cam video { width: 100%; height: 100%; object-fit: cover; display: block; }
.cam .frame { position: absolute; inset: 14%; border: 3px solid rgba(255,255,255,.9); border-radius: 18px; box-shadow: 0 0 0 999px rgba(0,0,0,.35); }
.cam .msg { position: absolute; left: 0; right: 0; bottom: 14px; text-align: center; color: #fff; font-size: 14px; }

.result { border-radius: var(--radius); padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.result.ok { background: var(--ok-bg); }
.result.bad { background: var(--bad-bg); }
.result h2 { margin: 0; font-size: 22px; display: flex; align-items: center; gap: 8px; }
.result.ok h2 { color: var(--ok); }
.result.bad h2 { color: var(--bad); }
.result .why { font-weight: 600; }
.rows { border-top: 1px solid var(--line); }
.rows div { display: flex; justify-content: space-between; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.rows div span:first-child { color: var(--muted); flex: none; }
.rows div span:last-child { text-align: right; font-weight: 600; }
.reqbox { border: 1px solid var(--line); border-radius: 12px; padding: 14px; background: #fff; }
.reqbox .t { font-size: 13px; color: var(--muted); }
.reqbox b { display: block; margin: 2px 0; }
.warn { font-size: 15px; padding: 12px 14px; border-radius: 10px; background: #fff7e0; }
details.trace { font-size: 14px; }
details.trace summary { cursor: pointer; color: var(--muted); padding: 6px 0; }
details.trace ol { margin: 6px 0 0; padding-left: 20px; }
details.trace li { display: flex; justify-content: space-between; gap: 10px; padding: 3px 0; border-bottom: 1px dashed var(--line); }
details.trace li .p { color: var(--ok); } details.trace li .f { color: var(--bad); font-weight: 700; } details.trace li .n { color: #9aa1ab; }
.err { color: var(--bad); font-size: 14px; }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.seg button { padding: 10px; border-radius: 10px; border: 1px solid var(--line); background: #fff; font-size: 14px; }
.seg button.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.keypad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.keypad button { height: 58px; border-radius: 29px; border: 1px solid var(--line); background: #fff; font-size: 22px; font-weight: 600; }
.speech { background: var(--bg); border-radius: 12px; padding: 14px; min-height: 64px; }
footer.legal { font-size: 12px; color: var(--muted); padding: 16px 18px 24px; border-top: 1px solid var(--line); }

/* 첫 화면 */
.page { max-width: 980px; margin: 0 auto; padding: 32px 20px 48px; }
.kicker { font-size: 13px; color: var(--muted); font-weight: 600; letter-spacing: .2px; }
.hero h1 { font-size: clamp(28px, 5vw, 40px); line-height: 1.25; margin: 6px 0 12px; letter-spacing: -0.6px; }
.hero p { font-size: 17px; color: #333a44; margin: 0; max-width: 640px; }
.grid2 { display: grid; grid-template-columns: 1.25fr 1fr; gap: 24px; margin-top: 28px; align-items: start; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 22px; }
.panel h2 { font-size: 18px; margin: 0 0 12px; }
.steps { margin: 0; padding-left: 20px; display: grid; gap: 10px; }
.steps li::marker { font-weight: 700; }
.phoneqr { display: flex; gap: 16px; align-items: center; }
.phoneqr svg { width: 132px; height: 132px; flex: none; }
.stats { font-size: 13px; color: var(--muted); margin-top: 10px; font-variant-numeric: tabular-nums; }
@media (max-width: 760px) { .grid2 { grid-template-columns: 1fr; } .page { padding-top: 22px; } }