/* 과목별 요약집 — 읽기용 공통 스타일 */
:root {
  --ink: #1c1917;
  --muted: #57534e;
  --line: #d6d3d1;
  --paper: #f7f4ef;
  --card: #fffcf7;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
  --warn: #9a3412;
  --code-bg: #1c1917;
  --code-fg: #f5f5f4;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 400px at 10% -10%, #e7f5f2 0%, transparent 55%),
    linear-gradient(180deg, #faf8f4, var(--paper));
  line-height: 1.7;
}
.site, main, .doc-header, .doc-nav {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}
.site { padding-top: 2.2rem; padding-bottom: 0.5rem; }
.eyebrow { margin: 0; color: var(--accent); font-weight: 700; font-size: .85rem; letter-spacing: .04em; }
h1 { font-family: "Source Serif 4", "Noto Serif KR", Georgia, serif; font-size: clamp(1.7rem, 4vw, 2.15rem); line-height: 1.25; margin: .35rem 0 .75rem; }
.lede { color: var(--muted); margin: 0 0 1rem; font-size: 1.02rem; }
.toplinks, .doc-nav { display: flex; flex-wrap: wrap; gap: .65rem .9rem; margin: 1rem 0 1.5rem; font-size: .92rem; }
.toplinks a, .doc-nav a { color: var(--accent); text-decoration: none; font-weight: 600; }
.toplinks a:hover, .doc-nav a:hover { text-decoration: underline; }
.how, .block, .pair, .check {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  margin: 1rem 0 1.35rem;
}
.coverage {
  background: #f0fdfa;
  border: 1px solid #99f6e4;
  border-radius: 14px;
  padding: .9rem 1rem;
  margin: 1rem 0 1.35rem;
}
.coverage strong { color: #115e59; }
.warning {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-left: 4px solid var(--warn);
  border-radius: 10px;
  padding: .75rem .9rem;
  margin: .8rem 0 1.2rem;
}
.how h2, .block h2 { margin-top: 0; font-size: 1.12rem; }
.cards { display: grid; gap: .85rem; margin: 1.5rem 0 2.5rem; }
@media (min-width: 700px) { .cards { grid-template-columns: 1fr 1fr; } }
.card {
  display: block; text-decoration: none; color: inherit;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.1rem 1.15rem; transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-1px); }
.card .num { color: var(--accent); font-weight: 800; font-size: .82rem; }
.card h2 { margin: .2rem 0 .35rem; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); font-size: .94rem; }
.doc-header { padding-top: 1.6rem; }
.doc-header h1 { margin-bottom: .4rem; }
.flow {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .84rem; line-height: 1.45;
  background: var(--code-bg); color: var(--code-fg);
  padding: 1rem; border-radius: 12px; overflow-x: auto; white-space: pre;
}
.principle {
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  padding: .65rem .85rem;
  margin: .75rem 0;
  border-radius: 0 10px 10px 0;
}
.principle strong { color: #115e59; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; margin: .7rem 0; background: #fff; }
th, td { border: 1px solid var(--line); padding: .45rem .55rem; vertical-align: top; text-align: left; }
th { background: #f5f5f4; }
.term { font-weight: 700; }
.muted { color: var(--muted); }
.tag {
  display: inline-block; font-size: .75rem; font-weight: 700;
  background: #ecfdf5; color: #065f46; border-radius: 999px; padding: .12rem .5rem; margin-right: .25rem;
}
ul, ol { padding-left: 1.2rem; }
li { margin: .25rem 0; }
details.check summary { cursor: pointer; font-weight: 700; }
details.check[open] { border-color: var(--accent); }
footer { max-width: 820px; margin: 0 auto 2.5rem; padding: 0 1.25rem; color: var(--muted); font-size: .85rem; }
code { background: #eee; padding: .05em .3em; border-radius: 4px; font-size: .9em; }
h2.sec { font-size: 1.28rem; margin: 2rem 0 .7rem; border-bottom: 2px solid var(--ink); padding-bottom: .25rem; }
h3 { font-size: 1.05rem; margin: 1.2rem 0 .4rem; }
.scene { background: #fff7ed; border: 1px solid #fed7aa; border-radius: 12px; padding: .75rem .9rem; margin: .7rem 0; }
.scene::before { content: "장면"; display: inline-block; font-size: .72rem; font-weight: 800; color: var(--warn); margin-right: .4rem; }
@media (max-width: 560px) {
  .block, .pair, .check, .coverage { overflow-x: auto; }
  table { min-width: 540px; }
}