/* ==========================================================
   도도리 랜딩 공통 스타일
   팔레트: 크림 #F4E9D8 / 도토리 #C98A4B·#6B4A2B / 딥브라운 #3A2A1A
           세이지 #7A9B6E / 레드 #D9534F
   폰트: 제목·버튼·뱃지 = 갈무리(픽셀, OFL 라이선스) / 본문 = Pretendard
   모바일 우선 — 기본이 모바일, min-width로 확장
   ========================================================== */

@import url("https://cdn.jsdelivr.net/gh/neodgm/neodgm-webfont@v1.530/neodgm/style.css");
@import url("https://cdn.jsdelivr.net/npm/galmuri@2.40.3/dist/galmuri.css");
@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css");

:root {
  --font-pixel: "NeoDunggeunmo", "Galmuri14", "Galmuri11", monospace;
  --font-body: "Pretendard Variable", "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Segoe UI", "Malgun Gothic", sans-serif;
  --cream: #F4E9D8;
  --acorn: #C98A4B;
  --acorn-dark: #6B4A2B;
  --brown: #3A2A1A;
  --sage: #7A9B6E;
  --red: #D9534F;
  --paper: #FFFDF8;
  --maxw: 680px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--brown);
  line-height: 1.7;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- 헤더 ---------- */
header {
  border-bottom: 3px solid var(--brown);
  background: var(--cream);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-family: var(--font-pixel); font-weight: 800; font-size: 1.15rem;
  text-decoration: none; color: var(--brown);
  display: flex; align-items: center; gap: 8px;
}
/* 흰 배경 이미지를 크림 배경에 자연스럽게 얹기 위해 multiply */
.logo-img { height: 30px; width: 30px; object-fit: cover; mix-blend-mode: multiply; image-rendering: pixelated; }
nav a {
  color: var(--acorn-dark); text-decoration: none; font-weight: 600; font-size: 0.9rem;
  margin-left: 14px;
}
nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
/* 언어 전환 (세그먼트) — 활성 칸은 히어로 kicker(브라운 배경·크림 글자)를 그대로 인용 */
.lang-switch {
  display: inline-flex; align-items: stretch; margin-left: 16px;
  border: 2px solid var(--brown); vertical-align: middle;
}
.lang-opt {
  appearance: none; -webkit-appearance: none; border: 0; background: transparent;
  font-family: var(--font-pixel); font-weight: 700;
  font-size: 0.72rem; letter-spacing: 0.04em; line-height: 1;
  padding: 5px 8px 4px; cursor: pointer; color: var(--acorn-dark);
  transition: background-color 0.12s ease, color 0.12s ease;
}
.lang-opt + .lang-opt { border-left: 2px solid var(--brown); }
.lang-opt[aria-pressed="true"] { background: var(--brown); color: var(--cream); }
.lang-opt[aria-pressed="false"]:hover { background: rgba(58, 42, 26, 0.09); color: var(--brown); }
.lang-opt:focus-visible { outline: 2px solid var(--acorn); outline-offset: 2px; }

/* ---------- 공통 섹션 ---------- */
section { padding: 52px 0; }
section + section { border-top: 2px dashed rgba(107, 74, 43, 0.35); }

h1 { font-family: var(--font-pixel); font-size: 1.6rem; line-height: 1.55; }
h2 {
  font-family: var(--font-pixel); font-size: 1.2rem; margin-bottom: 20px;
  display: flex; align-items: center; gap: 8px;
}
h2::before {
  content: ""; width: 22px; height: 22px; flex-shrink: 0;
  background: url("/assets/littlechat-acorn-square.3879729f18547cd3.png") center / contain no-repeat;
  mix-blend-mode: multiply; image-rendering: pixelated;
}

.sub { color: var(--acorn-dark); margin-top: 14px; font-size: 1.02rem; }

/* ---------- 히어로 ---------- */
.hero { padding: 64px 0 56px; }
.hero .kicker {
  display: inline-block; background: var(--brown); color: var(--cream);
  font-family: var(--font-pixel); font-size: 1rem; font-weight: 700;
  padding: 6px 12px 5px; margin-bottom: 18px;
}
.hero strong, .hero b { color: var(--acorn-dark); }

/* ---------- 버튼 ---------- */
.btn {
  display: inline-block; text-decoration: none; text-align: center;
  font-family: var(--font-pixel); font-weight: 700;
  padding: 14px 22px; border: 3px solid var(--brown); color: var(--brown);
  background: var(--paper); box-shadow: 4px 4px 0 var(--brown);
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
.btn:hover { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--brown); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--brown); }
.btn-primary { background: var(--acorn); color: #fff; }
.btn-row { display: flex; flex-direction: column; gap: 14px; margin-top: 26px; }

/* ---------- 카드 ---------- */
.card {
  background: var(--paper); border: 3px solid var(--brown);
  box-shadow: 5px 5px 0 var(--brown); padding: 22px; margin-bottom: 22px;
}
.card h3 { font-size: 1.1rem; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.card p { margin-top: 8px; font-size: 0.95rem; }
.card .go { display: inline-block; margin-top: 14px; font-weight: 700; color: var(--acorn-dark); text-decoration: none; }
.card .go:hover { text-decoration: underline; text-underline-offset: 4px; }

.badge {
  font-family: var(--font-pixel); font-size: 0.72rem; font-weight: 800;
  padding: 4px 8px 3px; color: #fff;
}
.badge-live { background: var(--sage); }
.badge-soon { background: var(--acorn); }

/* ---------- 약속 리스트 (흰 박스 카드) ---------- */
.promise {
  list-style: none; counter-reset: promise;
  background: var(--paper); border: 3px solid var(--brown);
  box-shadow: 5px 5px 0 var(--brown); padding: 8px 22px;
}
.promise li {
  counter-increment: promise; padding: 12px 0 12px 44px; position: relative; font-size: 0.98rem;
  border-bottom: 1px solid rgba(107, 74, 43, 0.25);
}
.promise li:last-child { border-bottom: none; }
.promise li::before {
  content: counter(promise);
  position: absolute; left: 0; top: 12px;
  width: 28px; height: 28px; line-height: 28px; text-align: center;
  background: var(--brown); color: var(--cream); font-weight: 800; font-size: 0.85rem;
}

/* ---------- 스텝(작동 방식) ---------- */
.steps { list-style: none; display: flex; flex-direction: column; gap: 16px; }
.steps li {
  background: var(--paper); border: 3px solid var(--brown); box-shadow: 4px 4px 0 var(--brown);
  padding: 18px;
}
.steps .n { font-family: var(--font-pixel); font-weight: 800; color: var(--acorn); font-size: 0.85rem; display: block; margin-bottom: 4px; }
.steps b { font-size: 1.02rem; }
.steps p { font-size: 0.92rem; margin-top: 4px; color: var(--acorn-dark); }

/* ---------- 셈법 박스 ---------- */
.math {
  background: var(--brown); color: var(--cream); padding: 26px 22px;
  border: 3px solid var(--brown); box-shadow: 5px 5px 0 var(--acorn);
}
.math .row { padding: 10px 0; border-bottom: 1px dashed rgba(244, 233, 216, 0.3); }
.math .row:last-child { border-bottom: none; }
.math .label { font-family: var(--font-pixel); font-size: 0.78rem; font-weight: 800; color: var(--acorn); display: block; }
.math .big { font-family: var(--font-pixel); font-size: 1.35rem; font-weight: 800; }

/* ---------- 안내(경고) 박스 ---------- */
.notice {
  background: var(--paper); border: 3px solid var(--acorn-dark);
  border-left-width: 10px; padding: 18px; margin-top: 18px; font-size: 0.92rem;
}
.notice b { display: block; margin-bottom: 6px; }
.notice ol { margin: 8px 0 0 20px; }
.notice li { margin-bottom: 4px; }

/* ---------- FAQ ---------- */
details {
  background: var(--paper); border: 3px solid var(--brown); margin-bottom: 12px;
}
summary {
  cursor: pointer; font-weight: 700; padding: 15px 18px; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-weight: 800; color: var(--acorn); font-size: 1.2rem; flex-shrink: 0; }
details[open] summary::after { content: "−"; }
details .a { padding: 0 18px 16px; font-size: 0.94rem; color: var(--acorn-dark); }

/* ---------- 스크린샷 자리 ---------- */
.shot {
  border: 3px solid var(--brown); box-shadow: 5px 5px 0 var(--brown);
  background: var(--paper); aspect-ratio: 9 / 16; max-width: 320px; margin: 0 auto;
  display: flex; align-items: center; justify-content: center;
  color: var(--acorn-dark); font-size: 0.85rem; text-align: center; padding: 20px;
}
.shot img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ---------- 푸터 ---------- */
footer {
  border-top: 3px solid var(--brown); padding: 34px 0 46px;
  font-size: 0.85rem; color: var(--acorn-dark);
}
footer .links { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-bottom: 12px; }
footer a { color: var(--acorn-dark); }

/* ==========================================================
   반응형 원칙: 모바일과 데스크톱 모두 "그 화면을 위해 디자인된 것처럼".
   기본 = 모바일. 640px(태블릿)에서 배치 전환, 1024px(데스크톱)에서
   폭·타이포·여백 스케일 업. 검증은 375px와 1280px 양쪽에서.
   ========================================================== */

/* ---------- 태블릿 (배치 전환) ---------- */
@media (min-width: 640px) {
  h1 { font-size: 2rem; }
  .hero { padding: 88px 0 72px; }
  .btn-row { flex-direction: row; }
  .btn { min-width: 180px; }
  .steps { flex-direction: row; }
  .steps li { flex: 1; }
  .cards-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
  .cards-2 .card { margin-bottom: 0; }
}

/* ---------- 데스크톱 (폭·타이포·여백 스케일 업) ---------- */
@media (min-width: 1024px) {
  :root { --maxw: 840px; }
  body { font-size: 1.05rem; }
  h1 { font-size: 2.4rem; }
  h2 { font-size: 1.4rem; margin-bottom: 26px; }
  section { padding: 76px 0; }
  .hero { padding: 120px 0 96px; }
  .hero .sub { max-width: 560px; }
  .card { padding: 28px; }
  .steps { gap: 22px; }
  .steps li { padding: 24px; }
  .math { padding: 34px 30px; }
  .math .big { font-size: 1.6rem; }
  summary { padding: 18px 22px; }
  details .a { padding: 0 22px 20px; }
  /* hover는 포인터 기기에서만 의미 있음 */
  summary:hover { background: rgba(201, 138, 75, 0.08); }
  .card { transition: transform 0.1s ease; }
  .card:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--brown); }
}