/* 핀페시아 안내서 — 읽기 중심 에디토리얼 레이아웃 */
:root {
  --paper: #f7f4ee;
  --paper-2: #efeae0;
  --ink: #1f2a24;
  --ink-soft: #4a564f;
  --ink-mute: #7b857f;
  --line: #ddd6c8;
  --leaf: #2f5d50;
  --leaf-soft: #e3ece7;
  --clay: #a8553a;
  --clay-soft: #f6e7df;
  --serif: "Noto Serif KR", "Apple SD Gothic Neo", serif;
  --sans: "Noto Sans KR", -apple-system, "Apple SD Gothic Neo", sans-serif;
  --measure: 680px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.8;
  word-break: keep-all;
  overflow-wrap: break-word;
}
a { color: var(--leaf); }
img, svg { max-width: 100%; }

/* ---------- 상단 ---------- */
.masthead {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 10;
}
.masthead-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 19px;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.brand svg { width: 22px; height: 22px; color: var(--leaf); }
.topnav { display: flex; gap: 4px; overflow-x: auto; }
.topnav a {
  font-size: 15px;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 6px;
  white-space: nowrap;
}
.topnav a:hover { background: var(--paper-2); }
.topnav a[aria-current="page"] { color: var(--leaf); font-weight: 700; }

.notice-strip {
  background: var(--paper-2);
  color: var(--ink-mute);
  font-size: 13px;
  text-align: center;
  padding: 7px 20px;
  line-height: 1.5;
}

/* ---------- 본문 레이아웃 ---------- */
.page {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 48px;
}
@media (min-width: 960px) {
  .page { grid-template-columns: 220px minmax(0, var(--measure)); justify-content: center; }
}

.toc { display: none; }
@media (min-width: 960px) {
  .toc {
    display: block;
    position: sticky;
    top: 90px;
    align-self: start;
    padding-top: 64px;
    font-size: 14px;
  }
  .toc p {
    font-family: var(--serif);
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--ink);
  }
  .toc ol { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
  .toc li a {
    display: block;
    padding: 5px 0 5px 14px;
    color: var(--ink-mute);
    text-decoration: none;
    line-height: 1.5;
  }
  .toc li a:hover { color: var(--leaf); }
}

article { min-width: 0; padding-bottom: 40px; }

/* ---------- 도입부 ---------- */
.intro { padding: 56px 0 28px; }
.kicker {
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--leaf);
  font-weight: 700;
  margin: 0 0 14px;
}
h1 {
  font-family: var(--serif);
  font-size: clamp(30px, 6vw, 42px);
  line-height: 1.35;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}
.lead { font-size: 18px; color: var(--ink-soft); margin: 0 0 18px; }
.byline { font-size: 13px; color: var(--ink-mute); margin: 0; }

.summary {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--leaf);
  border-radius: 4px;
  padding: 22px 24px;
  margin: 8px 0 12px;
}
.summary h2 {
  font-family: var(--sans);
  font-size: 15px;
  margin: 0 0 10px;
  color: var(--leaf);
  border: 0;
  padding: 0;
}
.summary ol { margin: 0; padding-left: 20px; }
.summary li { margin: 6px 0; }

/* ---------- 챕터 ---------- */
.chapter { padding-top: 44px; scroll-margin-top: 80px; }
.chapter-no {
  font-family: var(--serif);
  color: var(--clay);
  font-size: 15px;
  margin: 0 0 6px;
}
h2 {
  font-family: var(--serif);
  font-size: clamp(23px, 4.4vw, 28px);
  line-height: 1.4;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
h3 { font-size: 18px; margin: 28px 0 8px; }
p { margin: 0 0 16px; }

.facts { margin: 0; border-top: 1px solid var(--line); }
.facts div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.facts dt { color: var(--ink-mute); font-size: 15px; }
.facts dd { margin: 0; }
@media (max-width: 480px) {
  .facts div { grid-template-columns: 1fr; gap: 2px; }
}

/* 타임라인 */
.timeline { list-style: none; margin: 8px 0 0; padding: 0; position: relative; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--line);
}
.timeline li { position: relative; padding: 0 0 22px 34px; }
.timeline li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--leaf);
}
.timeline strong { display: block; font-size: 16px; color: var(--leaf); }

.aside-note {
  background: var(--leaf-soft);
  border-radius: 4px;
  padding: 16px 20px;
  font-size: 15px;
  color: var(--ink-soft);
  margin: 8px 0 16px;
}
.aside-note.warn { background: var(--clay-soft); }
.aside-note strong { color: var(--ink); }

.plain-list { padding-left: 20px; margin: 0 0 16px; }
.plain-list li { margin: 6px 0; }

/* 표 */
.table-wrap { overflow-x: auto; margin: 4px 0 18px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; background: #fff; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--paper-2); font-weight: 700; white-space: nowrap; }

/* 단계 */
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0 0 16px; }
.steps li {
  counter-increment: s;
  position: relative;
  padding: 14px 0 14px 52px;
  border-bottom: 1px dashed var(--line);
}
.steps li::before {
  content: counter(s);
  position: absolute;
  left: 0; top: 14px;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--leaf);
  color: #fff;
  font-family: var(--serif);
  font-weight: 700;
  display: grid;
  place-items: center;
}
.steps strong { display: block; }
.steps span { color: var(--ink-soft); font-size: 15px; }

/* 체크리스트 */
.checks { list-style: none; padding: 0; margin: 0 0 16px; }
.checks li { padding: 8px 0 8px 32px; position: relative; }
.checks li::before {
  content: "";
  position: absolute;
  left: 2px; top: 13px;
  width: 16px; height: 16px;
  border: 2px solid var(--leaf);
  border-radius: 3px;
}

/* FAQ */
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 4px 0;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 32px 14px 0;
  font-weight: 700;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px; top: 10px;
  font-size: 22px;
  color: var(--leaf);
  font-weight: 400;
}
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--ink-soft); }

/* 다음 읽을 거리 */
.next-read {
  display: grid;
  gap: 12px;
  margin: 8px 0;
}
@media (min-width: 600px) { .next-read { grid-template-columns: 1fr 1fr; } }
.next-read a {
  display: block;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  text-decoration: none;
  color: var(--ink);
}
.next-read a:hover { border-color: var(--leaf); }
.next-read small { display: block; color: var(--ink-mute); font-size: 13px; }
.next-read b { font-family: var(--serif); font-size: 18px; }

/* 구매 안내 띠 */
.closing {
  margin-top: 56px;
  background: var(--ink);
  color: #eef2ef;
  border-radius: 6px;
  padding: 32px 28px;
}
.closing h2 { color: #fff; border-color: rgba(255,255,255,.18); }
.closing p { color: #c9d2cd; }
.closing .btns { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 14px; }
.btn {
  display: inline-block;
  padding: 13px 20px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  line-height: 1.3;
}
.btn-main { background: #f0e6c8; color: var(--ink); }
.btn-main:hover { background: #fff; }
.btn-sub { border: 1px solid rgba(255,255,255,.35); color: #fff; }
.btn-sub:hover { background: rgba(255,255,255,.08); }
.closing small { display: block; color: #9eaaa3; font-size: 13px; line-height: 1.6; }

/* ---------- 하단 ---------- */
.footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 36px 20px 48px;
  font-size: 14px;
  color: var(--ink-mute);
}
.footer-inner { max-width: 1040px; margin: 0 auto; }
.footer .brand { font-size: 16px; margin-bottom: 10px; }
.footer p { margin: 0 0 12px; line-height: 1.7; }
.footer nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 14px 0; }
.footer nav a { color: var(--ink-soft); text-decoration: none; }

/* 헤더 우측 구매 버튼 */
.topnav { margin-left: auto; }
.head-cta {
  flex: none;
  background: var(--leaf);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 6px;
  white-space: nowrap;
}
.head-cta:hover { background: var(--ink); }
@media (max-width: 640px) {
  .masthead-inner { flex-wrap: wrap; row-gap: 6px; padding-top: 10px; padding-bottom: 8px; }
  .brand { order: 1; }
  .head-cta { order: 2; margin-left: auto; padding: 7px 12px; font-size: 13px; }
  .topnav { order: 3; width: 100%; margin-left: -10px; }
}

/* 참고 자료 */
.sources { margin: 18px 0; font-size: 13px; }
.sources-title { font-weight: 700; color: var(--ink-soft); margin: 0 0 6px !important; }
.sources ul { margin: 0 0 8px; padding-left: 18px; }
.sources li { margin: 2px 0; }
.sources a { color: var(--ink-mute); }