/* ==========================================================
   pages/doc.css — 설명 · 신뢰 페이지 (점수 기준 · 데이터 · 소개 · 약관 · 문의 · 404)
   1. 글 기본 (.doc h2/h3/p/목록/표)
   2. 강조 상자 (.callout) · 버튼 줄 (.doc-cta)
   3. 점수 기준: .part-grid · .rules · .timeline · .faq
   4. 데이터: .status · .sources · .steps
   5. 소개: .feature-grid
   6. 문의: .form
   7. 404: .nf
   ========================================================== */

/* ---------- 1. 글 기본 ---------- */
.doc { font-size: 15.5px; line-height: 1.75; color: var(--ink-2); }
.doc h2 { margin: 40px 0 14px; font-size: 21px; font-weight: 800; line-height: 1.35; letter-spacing: -.035em; color: var(--ink); }
.doc > h2:first-child { margin-top: 4px; }
.doc h3 { font-size: 16.5px; font-weight: 800; letter-spacing: -.03em; color: var(--ink); }
.doc p + p { margin-top: 10px; }
.doc a:not(.btn):not(.link) { font-weight: 700; color: var(--brand-deep); text-decoration: underline; text-underline-offset: 3px; }
.doc b { color: var(--ink); }
.bullets { display: grid; gap: 8px; }
.bullets li { position: relative; padding-left: 16px; }
.bullets li::before { content: ""; position: absolute; left: 2px; top: .72em; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }

.table-wrap { overflow-x: auto; border-radius: 16px; border: 1px solid var(--line); }
.doc-table { font-size: 14px; }
.doc-table th, .doc-table td { padding: 12px 14px; text-align: left; vertical-align: top; }
.doc-table thead th { font-size: 12.5px; font-weight: 700; color: var(--ink-4); background: var(--surface-2); }
.doc-table tbody tr + tr > * { border-top: 1px solid var(--line-2); }
.doc-table tbody th { font-weight: 800; color: var(--ink); white-space: nowrap; }

@media (min-width: 768px) {
  .doc { font-size: 16px; }
  .doc h2 { margin-top: 52px; font-size: 24px; }
}

/* ---------- 2. 강조 상자 · 버튼 줄 ---------- */
.callout {
  display: flex; gap: 14px; margin-top: 22px; padding: 18px 20px; border-radius: 18px;
  background: var(--surface-2); border: 1px solid var(--line); font-size: 14.5px; line-height: 1.7;
}
.callout > .ico { width: 24px; height: 24px; margin-top: 2px; color: var(--ink-3); }
.callout h3 { margin-bottom: 4px; }
.callout .btn { margin-top: 12px; }
.callout.is-blue { background: var(--blue-soft); border-color: var(--blue-line); }
.callout.is-blue > .ico { color: var(--blue); }
.callout.is-brand { background: var(--brand-soft); border-color: var(--brand-line); }
.callout.is-brand > .ico { color: var(--brand); }

.doc-cta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; }

/* ---------- 3. 점수 기준 ---------- */
.stack-lg { height: 64px; margin-bottom: 16px; }
.part-grid { display: grid; gap: 10px; }
.part-card { padding: 18px; border-radius: 18px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1); }
.part-card-head { display: flex; align-items: center; gap: 10px; }
.part-card-head h3 { flex: 1; min-width: 0; font-size: 16px; }
.part-max { font-size: 22px; font-weight: 900; letter-spacing: -.04em; color: var(--navy); font-variant-numeric: tabular-nums; }
.part-max small { font-size: 13px; font-weight: 700; color: var(--ink-4); }
.part-desc { margin-top: 10px; font-size: 14.5px; font-weight: 700; color: var(--ink); }
.part-how { margin-top: 2px; font-size: 14px; color: var(--ink-3); line-height: 1.6; }
@media (min-width: 640px) { .part-grid { grid-template-columns: 1fr 1fr; } }

.rules { display: grid; gap: 10px; }
.rules li { display: flex; gap: 14px; padding: 16px 18px; border-radius: 16px; background: var(--surface-2); }
.rules li > .ico { width: 22px; height: 22px; margin-top: 3px; color: var(--brand); }
.rules b { display: block; font-size: 15.5px; }
.rules p { margin-top: 2px; font-size: 14px; color: var(--ink-3); line-height: 1.6; }

.timeline { position: relative; display: grid; gap: 4px; padding-left: 4px; }
.timeline li { position: relative; display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 14px; padding: 12px 0; }
.timeline li::before { content: ""; position: absolute; left: 100px; top: 20px; width: 10px; height: 10px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px var(--brand-soft); }
.timeline li::after { content: ""; position: absolute; left: 104px; top: 34px; bottom: -14px; width: 2px; background: var(--line); }
.timeline li:last-child::after { display: none; }
.tl-day { font-size: 13.5px; font-weight: 800; color: var(--brand-deep); padding-top: 2px; }
.timeline li > div { padding-left: 22px; }
.timeline b { display: block; color: var(--ink); }
.timeline p { font-size: 14px; color: var(--ink-3); line-height: 1.6; }

.faq { display: grid; gap: 8px; }
.faq details { border-radius: 16px; background: #fff; border: 1px solid var(--line); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; padding: 0 18px;
  cursor: pointer; list-style: none; font-size: 15.5px; font-weight: 800; letter-spacing: -.02em; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ico { color: var(--ink-4); transition: transform .2s; }
.faq details[open] summary .ico { transform: rotate(180deg); }
.faq details p { padding: 0 18px 16px; font-size: 14.5px; color: var(--ink-2); }

/* ---------- 4. 데이터 ---------- */
.status { display: grid; gap: 8px; }
.status-card { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 16px 18px; border-radius: 16px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1); }
.status-card span { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; font-weight: 700; color: var(--ink-3); }
.status-card .ico { width: 17px; height: 17px; color: var(--ink-4); }
.status-card b { font-size: 16px; font-weight: 800; color: var(--navy); text-align: right; }
@media (min-width: 640px) {
  .status { grid-template-columns: repeat(3, 1fr); }
  .status-card { flex-direction: column; align-items: flex-start; }
  .status-card b { text-align: left; }
}

.sources { display: grid; gap: 10px; }
.source-card { padding: 20px; border-radius: 18px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1); }
.source-ico { width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand); margin-bottom: 12px; }
.source-ico.is-blue { background: var(--blue-soft); color: var(--blue); }
.source-card p { margin: 6px 0 8px; font-size: 14px; color: var(--ink-3); line-height: 1.65; }
@media (min-width: 640px) { .sources { grid-template-columns: 1fr 1fr; } }

.steps { display: grid; gap: 10px; counter-reset: s; }
.steps li { position: relative; padding: 16px 18px 16px 60px; border-radius: 16px; background: var(--surface-2); }
.step-n { position: absolute; left: 18px; top: 16px; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--navy); color: #fff; font-size: 13px; font-weight: 800; }
.steps b { display: block; color: var(--ink); }
.steps p { font-size: 14px; color: var(--ink-3); line-height: 1.6; }
@media (min-width: 768px) {
  .steps { grid-template-columns: repeat(4, 1fr); }
  .steps li { padding: 58px 16px 16px; }
  .step-n { top: 16px; left: 16px; }
}

/* ---------- 5. 소개 ---------- */
.feature-grid { display: grid; gap: 10px; }
.feature-grid li { padding: 20px; border-radius: 18px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1); }
.feature-grid .ptile { width: 42px; height: 42px; border-radius: 13px; margin-bottom: 12px; }
.feature-grid p { margin-top: 4px; font-size: 14px; color: var(--ink-3); line-height: 1.6; }
@media (min-width: 640px) { .feature-grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------- 6. 문의 ---------- */
.form { display: grid; gap: 16px; }
.field { display: grid; gap: 6px; }
.field-label { font-size: 14px; font-weight: 800; color: var(--ink); }
.field-label small { font-weight: 600; color: var(--ink-4); }
.field .select { width: 100%; height: 48px; }
.input {
  width: 100%; min-height: 48px; padding: 12px 14px; border-radius: 12px; border: 0; outline: none; resize: vertical;
  background: #fff; box-shadow: inset 0 0 0 1.5px var(--line); font-size: 15.5px; line-height: 1.6; transition: box-shadow .15s;
}
.input:hover { box-shadow: inset 0 0 0 1.5px var(--line-hover); }
.input:focus { box-shadow: inset 0 0 0 1.5px var(--brand-line), var(--focus-ring); }
.input::placeholder { color: var(--ink-4); }
.field-help { font-size: 12.5px; color: var(--ink-3); }
.form-note { font-size: 13px; color: var(--ink-3); }

/* ---------- 7. 404 ---------- */
.nf { text-align: center; padding-top: 56px; padding-bottom: 72px; }
.nf-code { font-size: 72px; font-weight: 900; letter-spacing: -.06em; line-height: 1; color: var(--brand); }
.nf h1 { margin-top: 10px; font-size: 26px; font-weight: 800; letter-spacing: -.04em; }
.nf p { margin-top: 8px; color: var(--ink-3); }
.nf-search { margin: 24px auto 0; max-width: 560px; text-align: left; }
.nf .doc-cta { justify-content: center; }