/* PPBox – 소개·약관 정적 사이트 (외부 글꼴·스크립트 없음) */
:root {
  --bg: #fcfbf9;
  --surface: #ffffff;
  --sunk: #f6f1ec;
  --text: #2f2828;
  --muted: #655a57;
  --line: #ebe3dc;
  --accent: #ff9233;          /* 앱 주요색 (Figma) */
  --accent-ink: #2f2828;
  --link: #b4560a;            /* 흰 바탕에서 4.5:1 이상 */
  --todo-bg: #fff3d6;
  --todo-ink: #7a4b00;
  --radius: 14px;
  --max: 880px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171312;
    --surface: #201b1a;
    --sunk: #261f1d;
    --text: #efe8e5;
    --muted: #b8aba6;
    --line: #362d2a;
    --accent: #ff9f4d;
    --accent-ink: #1d1410;
    --link: #ffb27a;
    --todo-bg: #3b2c10;
    --todo-ink: #ffd88a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Malgun Gothic",
    "Noto Sans KR", "Segoe UI", Roboto, sans-serif;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
a { color: var(--link); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 12px; background: var(--bg); padding: 8px 12px; z-index: 10; }

/* 머리글 */
header.site { border-bottom: 1px solid var(--line); background: var(--surface); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 800; font-size: 18px; letter-spacing: .2px; }
.brand img { width: 30px; height: 30px; flex: none; }
nav.main { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
nav.main a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav.main a:hover, nav.main a[aria-current="page"] { color: var(--text); }
nav.main a[aria-current="page"] { font-weight: 700; }
@media (max-width: 560px) {
  header.site .wrap { padding-block: 10px; }
  nav.main { gap: 6px 14px; width: 100%; }
  nav.main a { font-size: 14px; }
}

/* 첫 화면 */
.hero { padding: 64px 0 40px; }
.hero h1 { font-size: clamp(28px, 5vw, 42px); line-height: 1.25; margin: 0 0 14px; letter-spacing: -.5px; text-wrap: balance; }
.hero p { font-size: clamp(17px, 2.2vw, 19px); color: var(--muted); max-width: 640px; margin: 0 0 24px; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); text-decoration: none; padding: 11px 20px; border-radius: 999px; font-weight: 700; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); margin-left: 8px; }

section.block { padding: 44px 0; border-top: 1px solid var(--line); }
section.block h2 { font-size: clamp(22px, 3vw, 27px); margin: 0 0 8px; }
section.block .lead { color: var(--muted); margin: 0 0 24px; max-width: 640px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; padding: 0; margin: 0; list-style: none; counter-reset: s; }
@media (max-width: 720px) { .steps { grid-template-columns: 1fr; } }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; counter-increment: s; }
.steps li::before { content: counter(s); display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-weight: 800; margin-bottom: 8px; }
.steps h3 { margin: 4px 0 4px; font-size: 17px; }
.steps p { margin: 0; color: var(--muted); font-size: 15px; }
.links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 0; margin: 0; list-style: none; }
@media (max-width: 600px) { .links { grid-template-columns: 1fr; } }
.links a { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; text-decoration: none; color: var(--text); font-weight: 600; }
.links a small { display: block; color: var(--muted); font-weight: 400; font-size: 14px; }
.links .req { color: var(--link); font-size: 13px; font-weight: 700; margin-left: 6px; }

/* 문서(약관) */
.doc { padding: 40px 0 56px; }
.doc h1 { font-size: clamp(24px, 4vw, 32px); line-height: 1.3; margin: 0 0 8px; text-wrap: balance; }
.doc .meta { color: var(--muted); font-size: 14px; margin: 0 0 20px; }
.doc h2 { font-size: 19px; margin: 34px 0 8px; padding-top: 8px; border-top: 1px solid var(--line); }
.doc h3 { font-size: 16px; margin: 20px 0 6px; }
.doc p, .doc li { max-width: 72ch; }
.doc ol, .doc ul { padding-left: 22px; }
.doc li { margin: 4px 0; }
.doc .summary { background: var(--sunk); border-radius: var(--radius); padding: 16px 20px; margin: 0 0 24px; }
.doc .summary p { margin: 0; }
.toc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 20px; margin: 0 0 8px; font-size: 15px; }
.toc ol { margin: 6px 0 0; padding-left: 0; list-style: none; columns: 2; column-gap: 28px; }
@media (max-width: 600px) { .toc ol { columns: 1; } }
.table-wrap { overflow-x: auto; margin: 10px 0 14px; }
table { border-collapse: collapse; width: 100%; font-size: 15px; min-width: 520px; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--sunk); font-weight: 700; }
.draft { background: var(--todo-bg); color: var(--todo-ink); border-radius: 10px; padding: 10px 14px; font-size: 14px; margin: 0 0 18px; }
.todo { background: var(--todo-bg); color: var(--todo-ink); border-radius: 4px; padding: 0 4px; font-weight: 600; }

/* 바닥글 */
footer.site { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; background: var(--surface); }
footer.site nav { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 12px; }
footer.site nav a { color: var(--text); text-decoration: none; }
footer.site nav a.strong { font-weight: 800; }
footer.site p { margin: 2px 0; }