:root {
  --primary: #2451D6; --primary-tint: rgba(36,81,214,0.06);
  --jet: #0D0D0D; --canvas: #FFFFFF; --surface-soft: #F4F4F4; --card: #FFFFFF; --band-dark: #0D0D0D;
  --ink: #111111; --ink-sub: #4D4D4D; --ink-mute: #8C8C8C;
  --on-dark: #FFFFFF; --on-dark-soft: rgba(255,255,255,0.84); --on-dark-mute: rgba(255,255,255,0.62);
  --hairline: rgba(13,13,13,0.10); --row-line: rgba(13,13,13,0.07); --grid-line: rgba(13,13,13,0.04);
  --ok: #1E8E5A; --ok-tint: rgba(30,142,90,0.10);
  --warn: #B7791F; --warn-tint: rgba(183,121,31,0.12);
  --pending: #6B6B6B; --pending-tint: rgba(13,13,13,0.07);
  --sans: "Pretendard Variable","Pretendard",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",system-ui,sans-serif;
  --r-md: 12px; --pill: 999px; --sec-pad: clamp(56px,8vh,96px); --cell: 38px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --primary: #8FA6EE; --primary-tint: rgba(143,166,238,0.10);
    --canvas: #0D0D0D; --surface-soft: #141414; --card: #1A1A1A; --band-dark: #1A1A1A;
    --ink: #FFFFFF; --ink-sub: rgba(255,255,255,0.84); --ink-mute: rgba(255,255,255,0.62);
    --hairline: rgba(255,255,255,0.12); --row-line: rgba(255,255,255,0.08); --grid-line: rgba(255,255,255,0.04);
    --ok: #52C28A; --ok-tint: rgba(82,194,138,0.14); --warn: #E3AE55; --warn-tint: rgba(227,174,85,0.14);
    --pending: rgba(255,255,255,0.6); --pending-tint: rgba(255,255,255,0.09);
    color-scheme: dark;
  }
}

/* 3장 토큰에서 파생한 보조 토큰 (검정 밴드 위 선·입력칸 등) */
:root {
  --white: #FFFFFF;
  --on-dark-line: rgba(255,255,255,0.14); --on-dark-row: rgba(255,255,255,0.09);
  --on-dark-field: rgba(255,255,255,0.06); --on-dark-field-line: rgba(255,255,255,0.24); --on-dark-strong-line: rgba(255,255,255,0.4);
  --on-dark-grid: rgba(255,255,255,0.05); --on-dark-tint: rgba(255,255,255,0.1); --on-dark-bar: rgba(255,255,255,0.18);
  --warn-on-dark: #E3AE55; --warn-on-dark-tint: rgba(227,174,85,0.14); --warn-on-dark-line: rgba(227,174,85,0.3);
  --group-head: var(--jet); --accent-card: var(--jet); --accent-ink: var(--on-dark); --accent-mute: var(--on-dark-mute);
  --primary-ink: #FFFFFF; --light-card: #FFFFFF; --light-ink: #111111; --light-ink-sub: #4D4D4D; --light-ink-mute: #8C8C8C;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --group-head: #262626; --accent-card: var(--primary); --accent-ink: var(--jet); --accent-mute: rgba(13,13,13,0.7);
    --primary-ink: var(--jet); --light-card: var(--jet); --light-ink: #FFFFFF; --light-ink-sub: rgba(255,255,255,0.84); --light-ink-mute: rgba(255,255,255,0.62);
  }
}

/* ---------- 기본 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
h1, h2, h3, p, ul, ol, dl, dd { margin: 0; }
button, input { font: inherit; color: inherit; }
a { color: var(--primary); }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- 밴드 (흰색 → 회색 → 검정) ---------- */
.band { padding: var(--sec-pad) 0; }
.band--canvas { background: var(--canvas); color: var(--ink); }
.band--soft { background: var(--surface-soft); color: var(--ink); }
.band--dark { background: var(--band-dark); color: var(--on-dark); --ink: var(--on-dark); --ink-sub: var(--on-dark-soft); --ink-mute: var(--on-dark-mute); --hairline: var(--on-dark-line); --row-line: var(--on-dark-row); }
.band--grid {
  background-color: var(--band-dark);
  background-image:
    linear-gradient(var(--on-dark-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--on-dark-grid) 1px, transparent 1px);
  background-size: var(--cell) var(--cell);
}
@media (max-width: 520px) { .band--grid { background-size: 28px 28px; } }
.wrap {
  max-width: calc(1040px + max(16px, env(safe-area-inset-left)) + max(16px, env(safe-area-inset-right)));
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left));
  padding-right: max(16px, env(safe-area-inset-right));
}

/* ---------- 타이포 ---------- */
.display { font-size: clamp(34px, 5.4vw, 68px); font-weight: 700; letter-spacing: -0.05em; line-height: 1.15; }
.sec-title { font-size: clamp(25px, 2.7vw, 38px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.3; }
.lead { color: var(--ink-sub); margin-top: 14px; max-width: 640px; }
.mute { color: var(--ink-mute); }
.small { font-size: 13px; line-height: 1.6; }

/* 섹션 라벨: 작은 알약 스위치 + 굵은 라벨 */
.sec-label { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; margin-bottom: 14px; color: var(--ink); }
.sec-label::before {
  content: ""; flex: none; width: 32px; height: 18px; border-radius: var(--pill);
  background: var(--primary) radial-gradient(circle at 23px 9px, var(--white) 0 6px, transparent 6.5px);
}
.sec-head { margin-bottom: 32px; }

/* ---------- 버튼 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 36px; padding: 0 18px; border-radius: var(--pill);
  border: 1px solid var(--hairline); background: transparent; color: var(--ink);
  font-size: 14px; font-weight: 600; cursor: pointer; text-decoration: none; white-space: nowrap;
}
.btn:hover { border-color: var(--ink-mute); }
.btn--primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn--primary:hover { filter: brightness(1.08); border-color: var(--primary); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.band--dark .btn--primary { color: var(--band-dark); background: var(--on-dark); border-color: var(--on-dark); }

/* ---------- 입력 화면 ---------- */
.hero { padding: clamp(72px, 12vh, 140px) 0; }
.hero .lead { color: var(--on-dark-soft); }
.url-form { margin-top: 36px; display: flex; gap: 8px; max-width: 640px; }
.url-form input {
  flex: 1; min-width: 0; height: 48px; padding: 0 20px; border-radius: var(--pill);
  border: 1px solid var(--on-dark-field-line); background: var(--on-dark-field); color: var(--on-dark);
}
.url-form input::placeholder { color: var(--on-dark-mute); }
.url-form .btn { height: 48px; padding: 0 24px; font-size: 15px; }
.kw-toggle { margin-top: 16px; max-width: 640px; color: var(--on-dark-soft); }
.kw-toggle summary { cursor: pointer; font-size: 14px; font-weight: 600; width: fit-content; }
.kw-toggle .kw-body { margin-top: 12px; }
.kw-toggle input {
  width: 100%; height: 42px; padding: 0 16px; border-radius: var(--r-md);
  border: 1px solid var(--on-dark-field-line); background: var(--on-dark-field); color: var(--on-dark);
}
.form-msg { margin-top: 14px; min-height: 1.75em; color: var(--warn); font-weight: 600; }
.band--dark .form-msg { color: var(--warn-on-dark); }
@media (max-width: 520px) {
  .url-form { flex-direction: column; }
  .url-form .btn { width: 100%; }
}

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature { border: 1px solid var(--hairline); border-radius: var(--r-md); padding: 24px; background: var(--card); }
.feature h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.feature p { color: var(--ink-sub); }
@media (max-width: 900px) { .features { grid-template-columns: 1fr; } }

/* ---------- 진행 화면 ---------- */
.steps { list-style: none; padding: 0; margin-top: 36px; max-width: 520px; display: grid; gap: 10px; }
.step {
  display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-radius: var(--r-md);
  border: 1px solid var(--on-dark-line); color: var(--on-dark-mute);
}
.step::before {
  content: ""; flex: none; width: 10px; height: 10px; border-radius: 50%;
  border: 2px solid currentColor;
}
.step[data-state="active"] { color: var(--on-dark); border-color: var(--on-dark-strong-line); }
.step[data-state="active"]::before { background: currentColor; animation: pulse 1.2s ease-in-out infinite; }
.step[data-state="done"] { color: var(--on-dark-soft); }
.step[data-state="done"]::before { background: currentColor; }
@keyframes pulse { 50% { opacity: 0.3; } }

/* ---------- 상태 알약 ---------- */
.pill {
  display: inline-flex; align-items: center; height: 24px; padding: 0 10px; border-radius: var(--pill);
  font-size: 12px; font-weight: 700; white-space: nowrap; line-height: 1;
}
.pill--ok { color: var(--ok); background: var(--ok-tint); }
.pill--warn { color: var(--warn); background: var(--warn-tint); }
.pill--pending { color: var(--pending); background: var(--pending-tint); }
.pill--info { color: var(--primary); background: var(--primary-tint); }
.band--dark .pill--pending { color: var(--on-dark-soft); background: var(--on-dark-tint); }

/* ---------- 결과 상단 ---------- */
.report-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 24px; }
.report-head .display { font-size: clamp(30px, 4.6vw, 56px); }
.report-meta { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px 16px; color: var(--on-dark-mute); font-size: 14px; }
.report-meta a { color: var(--on-dark-soft); }
.head-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.notice + .notice { margin-top: 10px; }
.notice--light { margin: 0 0 14px; background: var(--warn-tint); color: var(--warn); border-color: transparent; }
.notice {
  margin-top: 24px; padding: 12px 16px; border-radius: var(--r-md); font-size: 14px;
  background: var(--warn-on-dark-tint); color: var(--warn-on-dark); border: 1px solid var(--warn-on-dark-line);
}

/* ---------- 점수 카드 ---------- */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 900px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .cards { grid-template-columns: 1fr; } }
.card {
  border: 1px solid var(--hairline); border-radius: var(--r-md); background: var(--card);
  padding: 22px; display: flex; flex-direction: column; gap: 10px; min-height: 180px;
}
.card--accent { background: var(--accent-card); border-color: var(--accent-card); color: var(--accent-ink); --ink-mute: var(--accent-mute); }
.card-title { font-size: 14px; font-weight: 700; }
.card-num { font-size: clamp(30px, 3.2vw, 42px); font-weight: 700; letter-spacing: -0.04em; line-height: 1.1; }
.card-num small { font-size: 15px; font-weight: 600; color: var(--ink-mute); letter-spacing: 0; margin-left: 4px; }
.card-num--empty { font-size: 22px; color: var(--ink-mute); }
.card-note { margin-top: auto; font-size: 12.5px; line-height: 1.55; color: var(--ink-mute); }
.bar { height: 6px; border-radius: var(--pill); background: var(--pending-tint); overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--primary); border-radius: inherit; }
.card--accent .bar { background: var(--on-dark-bar); }
.card--accent .bar > span { background: var(--accent-ink); }

/* ---------- 표 ---------- */
.table-wrap { border: 1px solid var(--hairline); border-radius: var(--r-md); background: var(--card); overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--row-line); vertical-align: top; }
th { font-size: 12.5px; font-weight: 700; color: var(--ink-mute); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.num { font-weight: 700; white-space: nowrap; }
.empty { padding: 28px 22px; color: var(--ink-sub); }
.empty strong { display: block; color: var(--ink); font-size: 16px; margin-bottom: 4px; }
.source-note { margin-top: 12px; }

/* ---------- 원인 카드 ---------- */
.causes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 767px) { .causes { grid-template-columns: 1fr; } }
.cause { background: var(--card); color: var(--ink); border-radius: var(--r-md); padding: 26px; border: 1px solid var(--hairline); }
.band--dark .cause { --ink: var(--light-ink); --ink-sub: var(--light-ink-sub); --ink-mute: var(--light-ink-mute); color: var(--light-ink); background: var(--light-card); border-color: transparent; }
.cause h3 { font-size: clamp(18px, 1.6vw, 20px); font-weight: 700; margin-bottom: 12px; }
.cause p { color: var(--ink-sub); }
.cause ul { padding-left: 1.1em; color: var(--ink-sub); display: grid; gap: 6px; }
.cause li::marker { color: var(--primary); }

/* ---------- 항목 그룹 ---------- */
.group { border-radius: var(--r-md); overflow: hidden; border: 1px solid var(--hairline); background: var(--card); }
.group + .group { margin-top: 20px; }
.group-head { background: var(--group-head); color: var(--on-dark); padding: 16px 22px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; }
.group-head h3 { font-size: 16px; font-weight: 700; }
.group-head span { font-size: 13px; color: var(--on-dark-mute); }
.row { display: grid; grid-template-columns: 168px 1fr; gap: 20px; padding: 18px 22px; border-top: 1px solid var(--row-line); }
.group-head + .row { border-top: 0; }
.row-label { font-weight: 700; display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.row-label .badges { display: flex; gap: 6px; flex-wrap: wrap; }
.row-body p + p { margin-top: 6px; }
.row-body .fix { color: var(--ink-sub); }
.row-body .fix b { color: var(--ink); }
@media (max-width: 767px) { .row { grid-template-columns: 1fr; gap: 8px; } .row-label { flex-direction: row; flex-wrap: wrap; align-items: center; } }

/* ---------- 상담 문의 ---------- */
.consult .lead { color: var(--on-dark-soft); }
.consult-actions { margin-top: 32px; }
.btn--lg { height: 48px; padding: 0 28px; font-size: 15px; }

footer.site-foot { padding: 28px 0; font-size: 13px; color: var(--on-dark-mute); background: var(--band-dark); border-top: 1px solid var(--on-dark-row); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- AI별 결과 펼쳐 보기 ---------- */
.engine-detail { margin-top: 14px; }
.engine-detail summary { cursor: pointer; font-size: 14px; font-weight: 700; width: fit-content; margin-bottom: 10px; }
td:first-child { min-width: 8em; }

/* ---------- 더보기 (추가 키워드) ---------- */
.more-box { margin-top: 14px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; }
.more-box .form-msg { width: 100%; margin: 0; min-height: 0; }
.more-status { font-weight: 600; color: var(--primary); }