/* 코파인더 사이트 공통 스타일
   레이아웃: 왼쪽 정렬 본문 + 결과 장부(엑셀) 모양을 주제 요소로 씀 */
:root {
  --paper: #f6f7f5;
  --card: #ffffff;
  --ink: #16211f;
  --muted: #5b6764;
  --line: #d9dfdc;
  --brand: #0e5a4f;      /* 짙은 청록: 장부 잉크 */
  --brand-ink: #ffffff;
  --mark: #f2b705;       /* 형광펜: 찾은 번호 */
  --mark-soft: #fff3c4;
  --warn: #b5541c;
  --ok: #1f7a4d;
  --display: "Hahmlet", "Noto Serif KR", serif;
  --body: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Consolas", monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #111816; --card: #18211f; --ink: #e7eeeb; --muted: #9fb0ab; --line: #2c3936;
    --brand: #5cc2ae; --brand-ink: #0b1513; --mark: #f2c443; --mark-soft: #3a3214;
    --warn: #e59466; --ok: #6fd19c; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #111816; --card: #18211f; --ink: #e7eeeb; --muted: #9fb0ab; --line: #2c3936;
  --brand: #5cc2ae; --brand-ink: #0b1513; --mark: #f2c443; --mark-soft: #3a3214;
  --warn: #e59466; --ok: #6fd19c; color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.7 var(--body); word-break: keep-all; overflow-wrap: anywhere;
}
a { color: var(--brand); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--mark); outline-offset: 2px; }
.wrap {
  max-width: 1080px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
h1, h2, h3 { font-family: var(--display); line-height: 1.3; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(30px, 5vw, 48px); font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: clamp(24px, 3.4vw, 32px); font-weight: 700; }
h3 { font-size: 19px; font-weight: 600; }
p { margin: 0; }
.lead { font-size: 18px; color: var(--muted); max-width: 40em; }
.eyebrow { font: 600 13px/1 var(--body); letter-spacing: 0.08em; color: var(--brand); }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
mark { background: var(--mark-soft); color: inherit; padding: 0 .2em; border-bottom: 2px solid var(--mark); }

/* 머리 */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--paper); }
header.top {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(6px); border-bottom: 1px solid var(--line);
}
header.top .wrap { display: flex; align-items: center; gap: 20px; padding-block: 12px; flex-wrap: wrap; }
.logo { font: 700 22px/1 var(--display); color: var(--ink); text-decoration: none; display: flex; align-items: baseline; gap: 8px; }
.logo small { font: 400 12px/1 var(--body); color: var(--muted); }
nav.menu { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
nav.menu a { color: var(--ink); text-decoration: none; font-size: 15px; }
nav.menu a:hover { color: var(--brand); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border-radius: 6px; font: 600 16px/1.2 var(--body);
  text-decoration: none; border: 1.5px solid var(--brand); cursor: pointer;
}
.btn.primary { background: var(--brand); color: var(--brand-ink); }
.btn.ghost { background: transparent; color: var(--brand); }
.btn.small { padding: 8px 14px; font-size: 14px; }

section { padding-block: 64px; }
section + section { border-top: 1px solid var(--line); }
.stack { display: grid; gap: 16px; }
.head { display: grid; gap: 10px; margin-bottom: 32px; max-width: 46em; }

/* 장부 표 (주제 요소) */
.ledger-box { min-width: 0; }
.ledger-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 6px; background: var(--card); }
table.ledger { border-collapse: collapse; width: 100%; font-size: 14px; min-width: 560px; }
.ledger th, .ledger td { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 7px 10px; text-align: left; white-space: nowrap; }
.ledger th { background: color-mix(in srgb, var(--brand) 10%, var(--card)); font-weight: 600; font-size: 13px; }
.ledger td.rn, .ledger th.rn { color: var(--muted); text-align: center; width: 2.5em; font-family: var(--mono); font-size: 12px; }
.ledger tr:last-child td { border-bottom: 0; }
.ledger td:last-child, .ledger th:last-child { border-right: 0; }
.tag { display: inline-block; font-size: 12px; font-weight: 600; padding: 1px 8px; border-radius: 99px; border: 1px solid currentColor; }
.tag.ok { color: var(--ok); }
.tag.check { color: var(--warn); }
.caption { font-size: 13px; color: var(--muted); margin-top: 8px; }

/* 영웅 */
.hero .wrap { display: grid; gap: 40px; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); align-items: center; }
.hero .copy { display: grid; gap: 20px; min-width: 0; }
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.hero .facts { font-size: 14px; color: var(--muted); }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } }

/* 순서 */
ol.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; counter-reset: s; }
ol.steps li { counter-increment: s; display: grid; gap: 8px; align-content: start; padding-top: 16px; border-top: 3px solid var(--brand); }
ol.steps li::before { content: counter(s); font: 700 28px/1 var(--display); color: var(--brand); }
ol.steps p { color: var(--muted); }
@media (max-width: 760px) { ol.steps { grid-template-columns: 1fr; } }

/* 기능 목록 */
.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 40px; }
.features div { display: grid; gap: 6px; min-width: 0; }
.features p { color: var(--muted); }
@media (max-width: 760px) { .features { grid-template-columns: 1fr; } }

/* 요금 */
.plans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 22px; display: grid; gap: 6px; align-content: start; }
.plan.pick { border: 2px solid var(--brand); }
.plan .name { font-weight: 600; }
.plan .count { font: 700 26px/1.2 var(--display); }
.plan .price { font: 600 20px/1.3 var(--mono); }
.plan .unit { font-size: 13px; color: var(--muted); }
@media (max-width: 900px) { .plans { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 460px) { .plans { grid-template-columns: 1fr; } }
.rule { margin-top: 24px; background: var(--card); border: 1px dashed var(--brand); border-radius: 8px; padding: 18px 22px; display: grid; gap: 8px; }
.rule ul { margin: 0; padding-left: 1.2em; color: var(--ink); }

/* 두 칸 */
.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
.two > * { min-width: 0; }
@media (max-width: 760px) { .two { grid-template-columns: 1fr; } }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 22px; display: grid; gap: 10px; align-content: start; }
.panel ul, .panel ol { margin: 0; padding-left: 1.2em; }
.copyrow { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.copyrow code { font: 15px var(--mono); background: var(--paper); border: 1px solid var(--line); padding: 4px 8px; border-radius: 4px; user-select: all; }

/* FAQ */
.faq { display: grid; gap: 0; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 16px 32px 16px 0; font-weight: 600; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font: 400 24px/1 var(--mono); color: var(--brand); }
.faq details[open] summary::after { content: "−"; }
.faq .a { padding: 0 0 18px; color: var(--ink); display: grid; gap: 8px; max-width: 46em; }
.faq .a p, .faq .a li { color: var(--muted); }
.faq-group { margin-top: 28px; }
.faq-group:first-child { margin-top: 0; }
.faq-group > h3 { margin-bottom: 8px; }

/* 문서 페이지 (설치 안내·약관) */
.doc { max-width: 780px; }
.doc h2 { margin-top: 48px; padding-top: 8px; }
.doc h3 { margin-top: 28px; }
.doc p, .doc li { margin-top: 10px; }
.doc ol, .doc ul { padding-left: 1.3em; }
.doc table { border-collapse: collapse; width: 100%; font-size: 14px; margin-top: 12px; }
.doc th, .doc td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.doc th { background: color-mix(in srgb, var(--brand) 10%, var(--card)); }
.doc .tablewrap { overflow-x: auto; }
.doc kbd { font: 13px var(--mono); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; padding: 1px 6px; background: var(--card); }
.note { background: var(--mark-soft); border-left: 4px solid var(--mark); padding: 12px 16px; border-radius: 0 6px 6px 0; margin-top: 14px; }
.toc { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 16px 22px; margin-top: 24px; }
.toc ol { margin: 6px 0 0; }

/* 바닥 */
footer.bottom { border-top: 1px solid var(--line); padding-block: 36px; font-size: 13px; color: var(--muted); }
footer.bottom .wrap { display: grid; gap: 12px; }
footer.bottom nav { display: flex; gap: 16px; flex-wrap: wrap; }
footer.bottom nav a { color: var(--ink); font-weight: 600; }
footer.bottom .biz { display: flex; flex-wrap: wrap; gap: 4px 14px; }

/* 폰: 머리 줄이 화면을 덜 차지하게 */
@media (max-width: 640px) {
  header.top { position: static; }
  header.top .wrap { gap: 10px 16px; }
  nav.menu { order: 3; width: 100%; margin-left: 0; gap: 6px 14px; }
  header.top .btn { margin-left: auto; }
}