/* =========================================================
   나다운 아트 NADAUN ART
   "모든 아이는 자신만의 색을 가지고 있습니다"
   → 4개 과정에 각각 물감색을 부여한 것이 이 사이트의 뼈대
   ========================================================= */

:root {
  --ink: #17232d;
  --ink-soft: #4c5b67;
  --ink-faint: #7d8a94;
  --paper: #fcfbf9;
  --paper-2: #f2efe8;
  --line: #ded9d0;

  --feel: #dd9012;      /* 유아 · 카드뮴 옐로 */
  --think: #2b5fa8;     /* 초등 · 코발트 블루 */
  --project: #1c7a62;   /* 청소년 · 비리디언 */
  --adult: #6d4f9c;     /* 성인 · 바이올렛 */
  --bookart: #b4455e;   /* 북아트 · 로즈매더 */

  --kakao: #fee500;
  --accent: var(--ink);

  --wrap: 1100px;
  --r: 4px;

  --f-display: "Gowun Batang", "Nanum Myeongjo", serif;
  --f-body: "Pretendard", -apple-system, BlinkMacSystemFont, system-ui,
    "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}

body.c-feel    { --accent: var(--feel); }
body.c-think   { --accent: var(--think); }
body.c-project { --accent: var(--project); }
body.c-adult   { --accent: var(--adult); }
body.c-bookart { --accent: var(--bookart); }

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: break-word;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 22px; }

.skip { position: absolute; left: -9999px; background: var(--ink); color: #fff; padding: 10px 16px; z-index: 100; }
.skip:focus { left: 12px; top: 12px; }

/* ---------- 헤더 ---------- */
.site-head {
  position: sticky; top: 0; z-index: 40;
  background: rgba(252, 251, 249, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.head-in { display: flex; align-items: center; gap: 18px; height: 68px; }
.logo { display: flex; align-items: baseline; gap: 8px; text-decoration: none; white-space: nowrap; }
.logo b { font-family: var(--f-display); font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }
.logo i {
  font-style: normal; font-size: 11px; letter-spacing: 0.22em;
  color: var(--ink-faint); font-weight: 700;
}
.logo em {
  font-style: normal; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); display: inline-block;
}

.nav { display: flex; gap: 17px; margin-left: auto; font-size: 15px; }
.nav a {
  text-decoration: none; color: var(--ink-soft);
  padding: 4px 0; border-bottom: 2px solid transparent; white-space: nowrap;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.head-cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--ink); color: #fff; text-decoration: none;
  font-size: 15px; font-weight: 700; padding: 9px 17px; border-radius: 999px;
}
@media (max-width: 1120px) {
  .nav { display: none; }
  .head-cta { margin-left: auto; }
}

/* ---------- 히어로 ---------- */
.hero { padding: 76px 0 56px; }
.eyebrow {
  font-size: 13px; letter-spacing: 0.16em; font-weight: 700;
  color: var(--accent); margin: 0 0 18px;
}
h1 {
  font-family: var(--f-display);
  font-size: clamp(33px, 5.8vw, 58px);
  line-height: 1.26; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 22px;
}
.h1-mark { position: relative; display: inline-block; }
.h1-mark svg {
  position: absolute; left: -2%; bottom: -0.2em; width: 104%; height: 0.32em;
  color: var(--accent); opacity: 0.6;
}
.lede { font-size: clamp(17px, 2.1vw, 20px); color: var(--ink-soft); max-width: 41em; margin: 0 0 30px; }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px;
  font-size: 16px; font-weight: 700; text-decoration: none;
  border: 2px solid var(--ink); transition: transform 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-kakao { background: var(--kakao); border-color: #e5cf00; color: #3c1e1e; }
.btn-tel { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); }
.hero-note { margin: 18px 0 0; font-size: 14px; color: var(--ink-faint); }

/* 과정 스와치 (시그니처) */
.swatches { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 54px; }
.swatch { text-decoration: none; display: block; padding: 0 0 16px; border-bottom: 1px solid var(--line); transition: transform 0.2s ease; }
.swatch:hover { transform: translateY(-4px); }
.swatch svg { width: 100%; height: 56px; display: block; }
.swatch i {
  font-style: normal; display: block; font-size: 11px; letter-spacing: 0.2em;
  font-weight: 700; margin-top: 13px;
}
.swatch b { display: block; font-family: var(--f-display); font-size: 20px; margin-top: 3px; letter-spacing: -0.01em; }
.swatch small { display: block; font-size: 13.5px; color: var(--ink-faint); }
@media (max-width: 860px) { .swatches { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) {
  .swatches { grid-template-columns: 1fr; gap: 8px; }
  .swatch svg { height: 40px; }
  .hero { padding: 46px 0 36px; }
}

/* ---------- 섹션 ---------- */
.sec { padding: 66px 0; border-top: 1px solid var(--line); }
.sec.tint { background: var(--paper-2); border-top: none; }
.sec.dark { background: var(--ink); color: #e8edf1; border-top: none; }
.sec.dark h2 { color: #fff; }
.sec.dark .sec-lede { color: #9fb0bc; }

h2 { font-family: var(--f-display); font-size: clamp(25px, 3.4vw, 35px); line-height: 1.38; letter-spacing: -0.02em; margin: 0 0 14px; font-weight: 700; }
h3 { font-family: var(--f-display); font-size: 21px; margin: 0 0 8px; font-weight: 700; }
.sec > .wrap > p { max-width: 43em; }
.sec-lede { color: var(--ink-soft); margin: 0 0 34px; max-width: 43em; }

/* 카드 */
.cards { display: grid; gap: 18px; grid-template-columns: repeat(3, 1fr); }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.cards.four { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .cards.four { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 820px) { .cards, .cards.two { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .cards.four { grid-template-columns: 1fr; } }

.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r);
  padding: 26px 24px; text-decoration: none; display: block;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-3px); }
.card .tag { font-size: 11.5px; letter-spacing: 0.16em; font-weight: 700; color: var(--accent); display: block; margin-bottom: 10px; }
.card p { margin: 0; font-size: 15.5px; color: var(--ink-soft); }
.card .more { display: inline-block; margin-top: 14px; font-size: 14px; font-weight: 700; color: var(--accent); }
.card ul { margin: 10px 0 0; padding-left: 1.1em; font-size: 15px; color: var(--ink-soft); }
.card li { margin-bottom: 4px; }

/* 단계 */
.steps { counter-reset: s; display: grid; gap: 2px; margin: 0; padding: 0; list-style: none; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 62px 1fr; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); align-items: start; }
.steps li::before { content: counter(s, decimal-leading-zero); font-family: var(--f-display); font-size: 30px; color: var(--accent); line-height: 1.1; }
.steps h3 { margin-bottom: 4px; }
.steps p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }

/* 태그 */
.dong { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 20px 0 0; list-style: none; }
.dong li { font-size: 14px; color: var(--ink-soft); border: 1px solid var(--line); border-radius: 999px; padding: 5px 13px; background: var(--paper); }

/* 소개 */
.about { display: grid; grid-template-columns: 330px 1fr; gap: 44px; align-items: start; }
@media (max-width: 860px) { .about { grid-template-columns: 1fr; gap: 26px; } }
.about img { border-radius: var(--r); border: 1px solid var(--line); }
.about ul { padding-left: 1.1em; color: var(--ink-soft); }
.about li { margin-bottom: 6px; }

/* 인용 (교육철학) */
.pull {
  font-family: var(--f-display); font-size: clamp(21px, 3vw, 30px);
  line-height: 1.6; letter-spacing: -0.02em; margin: 0; max-width: 22em;
}
.pull-by { display: block; margin-top: 20px; font-family: var(--f-body); font-size: 14px; letter-spacing: 0.1em; color: #9fb0bc; }

/* 후기 */
.quotes { display: grid; gap: 18px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .quotes { grid-template-columns: 1fr; } }
.quote { background: var(--paper); border: 1px solid var(--line); border-left: 4px solid var(--qc, var(--accent)); border-radius: var(--r); padding: 22px; margin: 0; }
.quote p { margin: 0 0 12px; font-size: 15.5px; }
.quote cite { font-style: normal; font-size: 13.5px; color: var(--ink-faint); }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 20px 0; font-weight: 700; font-size: 16.5px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 0 0 12px; color: var(--ink-soft); font-size: 15.5px; }
.faq details ul { margin: 0 0 20px; padding-left: 1.2em; color: var(--ink-soft); font-size: 15.5px; }
.faq h3.faq-cat { margin: 46px 0 6px; font-size: 19px; }
.faq h3.faq-cat:first-child { margin-top: 0; }

/* 표 */
.tbl { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 15.5px; }
.tbl th, .tbl td { text-align: left; padding: 15px 12px; border-bottom: 1px solid var(--line); }
.tbl th { font-size: 13.5px; color: var(--ink-faint); font-weight: 700; }
.tbl td:first-child { font-weight: 700; }

/* 정보 목록 */
.info { list-style: none; padding: 0; margin: 0; display: grid; gap: 0; }
.info li { display: grid; grid-template-columns: 130px 1fr; gap: 16px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.info b { color: var(--ink-faint); font-size: 14px; font-weight: 700; }
@media (max-width: 560px) { .info li { grid-template-columns: 1fr; gap: 2px; } }

/* 마무리 CTA */
.cta-band { background: var(--ink); color: #fff; padding: 64px 0; text-align: center; }
.cta-band h2 { color: #fff; }
.cta-band p { color: #c1ccd4; max-width: 34em; margin: 0 auto 26px; }
.cta-band .btn-row { justify-content: center; }
.cta-band .btn-ghost { color: #fff; border-color: #fff; }

/* 푸터 */
.site-foot { background: var(--paper-2); border-top: 1px solid var(--line); padding: 50px 0 40px; font-size: 14.5px; color: var(--ink-soft); }
.foot-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
@media (max-width: 860px) { .foot-grid { grid-template-columns: repeat(2, 1fr); gap: 26px; } }
@media (max-width: 480px) { .foot-grid { grid-template-columns: 1fr; } }
.site-foot h4 { font-size: 12.5px; letter-spacing: 0.14em; color: var(--ink-faint); margin: 0 0 12px; font-weight: 700; }
.site-foot ul { list-style: none; padding: 0; margin: 0; }
.site-foot li { margin-bottom: 7px; }
.site-foot a { text-decoration: none; }
.site-foot a:hover { text-decoration: underline; }
.copy { margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink-faint); }

/* 모바일 하단 문의 바 */
.mobile-bar { display: none; }
@media (max-width: 1120px) {
  body { padding-bottom: 68px; }
  .mobile-bar { display: block; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; border-top: 1px solid var(--line); }
  .mobile-bar a { text-align: center; padding: 17px 8px; font-weight: 700; text-decoration: none; font-size: 16px; }
  .mobile-bar .m-tel { background: var(--ink); color: #fff; }
}

.plain { color: var(--ink-soft); padding-left: 1.15em; }
.plain li { margin-bottom: 9px; }

.breadcrumb { font-size: 13.5px; color: var(--ink-faint); margin: 22px 0 0; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

.todo {
  background: #fff6d6; border: 1px dashed #d9b73c; border-radius: var(--r);
  padding: 14px 18px; font-size: 14.5px; color: #6b5410; margin: 24px 0 0;
}

.reveal { opacity: 0; transform: translateY(14px); }
.reveal.in { opacity: 1; transform: none; transition: opacity 0.6s ease, transform 0.6s ease; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }


/* ============ 브랜드: 빛 ============ */
.sec.dark { position: relative; overflow: hidden; }
.sec.dark::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(60% 120% at 18% 0%, rgba(221,144,18,.20), transparent 62%),
    radial-gradient(55% 120% at 62% 110%, rgba(43,95,168,.24), transparent 60%),
    radial-gradient(45% 90% at 92% 20%, rgba(109,79,156,.18), transparent 60%);
}
.sec.dark > .wrap { position: relative; z-index: 1; }

/* 슬로건 */
.slogan-hero {
  font-family: var(--f-display); font-size: 15px; letter-spacing: 0.16em;
  color: var(--ink-faint); margin: 0 0 16px;
}
.slogan-foot {
  font-family: var(--f-display); font-size: 17px; letter-spacing: 0.1em;
  color: var(--ink-faint); margin: 34px 0 0;
}
.slogan-big {
  font-family: var(--f-display);
  font-size: clamp(30px, 6vw, 60px); letter-spacing: 0.01em;
  margin: 0; line-height: 1.3;
  background: linear-gradient(96deg, var(--feel), var(--think) 42%, var(--project) 68%, var(--adult));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* 빛과 그릇 */
.vessel { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 34px; }
@media (max-width: 760px) { .vessel { grid-template-columns: 1fr; } }
.vessel > div {
  border: 1px solid var(--line); border-radius: var(--r);
  padding: 30px 26px; background: var(--paper);
}
.vessel h3 { font-size: 30px; margin-bottom: 2px; }
.vessel .sub {
  display: block; font-size: 13px; letter-spacing: 0.14em;
  color: var(--ink-faint); font-weight: 700; margin-bottom: 16px;
}
.vessel p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }

/* Experience → Expression → Reflection */
.flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 0; align-items: stretch; margin-top: 34px; }
.flow .arrow {
  display: flex; align-items: center; justify-content: center;
  padding: 0 14px; color: var(--ink-faint); font-size: 20px;
}
.flow > div.step-box {
  border: 1px solid var(--line); border-radius: var(--r);
  padding: 28px 24px; background: var(--paper);
}
.flow .en {
  display: block; font-size: 12px; letter-spacing: 0.2em; font-weight: 700;
  color: var(--accent); margin-bottom: 8px;
}
.flow h3 { margin-bottom: 8px; }
.flow p { margin: 0; font-size: 15px; color: var(--ink-soft); }
@media (max-width: 860px) {
  .flow { grid-template-columns: 1fr; }
  .flow .arrow { padding: 8px 0; transform: rotate(90deg); }
}

/* 브랜드 키워드 */
.kw { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 30px 0 0; list-style: none; }
.kw li {
  border: 1px solid var(--line); border-radius: 999px;
  padding: 10px 20px; background: var(--paper);
}
.kw b { font-family: var(--f-display); font-size: 17px; font-weight: 700; }
.kw span { font-size: 13.5px; color: var(--ink-faint); margin-left: 8px; }

/* 미션 */
.mission { list-style: none; padding: 0; margin: 30px 0 0; display: grid; gap: 0; }
.mission li {
  font-family: var(--f-display); font-size: clamp(22px, 3.6vw, 34px);
  padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.14);
  display: flex; align-items: baseline; gap: 18px;
}
.mission li:last-child { border-bottom: none; }
.mission i {
  font-style: normal; font-family: var(--f-body); font-size: 12px;
  letter-spacing: 0.2em; color: #8fa2b0; font-weight: 700; min-width: 28px;
}

/* 비전 */
.vision { list-style: none; padding: 0; margin: 30px 0 0; }
.vision li {
  display: grid; grid-template-columns: 96px 1fr; gap: 22px;
  padding: 24px 0; border-bottom: 1px solid var(--line); align-items: baseline;
}
.vision b {
  font-size: 12px; letter-spacing: 0.2em; color: var(--accent); font-weight: 700;
}
.vision span { font-family: var(--f-display); font-size: clamp(19px, 2.6vw, 26px); line-height: 1.5; }
@media (max-width: 560px) { .vision li { grid-template-columns: 1fr; gap: 6px; } }

/* ============ AI 검색 인용용 요약 블록 ============ */
.answer-wrap { padding: 0 0 6px; }
.answer {
  border-left: 4px solid var(--accent);
  background: var(--paper-2);
  border-radius: var(--r);
  padding: 24px 28px;
}
.answer b {
  display: block; font-size: 11.5px; letter-spacing: 0.16em;
  color: var(--ink-faint); font-weight: 700; margin-bottom: 10px;
}
.answer p { margin: 0; font-size: 16px; line-height: 1.8; color: var(--ink); }
@media (max-width: 560px) { .answer { padding: 20px 20px; } }

/* 비교표 */
.tbl-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-top: 18px; }
.tbl.cmp { min-width: 620px; margin-top: 0; }
.tbl.cmp th { white-space: nowrap; }
.tbl.cmp td { vertical-align: top; font-size: 15px; }
.tbl.cmp td:first-child { white-space: nowrap; color: var(--accent); }
.tbl.cmp tbody tr:hover { background: var(--paper-2); }

/* 체크리스트 */
.check { counter-reset: ck; list-style: none; padding: 0; margin: 30px 0 0; }
.check li {
  counter-increment: ck;
  display: grid; grid-template-columns: 56px 1fr; gap: 18px;
  padding: 22px 0; border-bottom: 1px solid var(--line); align-items: start;
}
.check li::before {
  content: counter(ck, decimal-leading-zero);
  font-family: var(--f-display); font-size: 26px; color: var(--accent); line-height: 1.2;
}
.check h3 { margin-bottom: 6px; font-size: 19px; }
.check p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }
@media (max-width: 520px) { .check li { grid-template-columns: 40px 1fr; gap: 12px; } }

/* ============ 반 편성 · 과정 표기 ============ */
.card .track {
  font-size: 12.5px; font-weight: 700; letter-spacing: 0.06em;
  margin: 0 0 8px; opacity: 0.9;
}

/* 과정 페이지 마무리 문장 */
.closing {
  font-family: var(--f-display);
  font-size: clamp(19px, 2.6vw, 25px); line-height: 1.55;
  margin: 40px 0 0; padding: 4px 0 4px 22px;
  letter-spacing: -0.01em;
}

.hero-stroke { max-width: 420px; margin-top: 40px; }
.hero-stroke svg { width: 100%; height: 52px; display: block; }

/* 12개월 커리큘럼 표 */
.tbl.year { min-width: 460px; }
.tbl.year td:nth-child(1), .tbl.year td:nth-child(3) {
  color: var(--ink-faint); font-weight: 700; width: 62px; white-space: nowrap;
}
.tbl.year td:nth-child(2), .tbl.year td:nth-child(4) { font-weight: 400; }
.tbl.year td:nth-child(3) { border-left: 1px solid var(--line); padding-left: 22px; }

/* 화가 인용구 */
.artquote {
  margin: 40px 0 0; padding: 26px 0 0; border-top: 1px solid var(--line);
}
.artquote blockquote {
  font-family: var(--f-display); font-size: clamp(19px, 2.8vw, 26px);
  line-height: 1.55; margin: 0; letter-spacing: -0.01em;
}
.artquote figcaption {
  margin-top: 12px; font-size: 14px; color: var(--ink-faint); letter-spacing: 0.06em;
}
.sec.dark .artquote { border-top-color: rgba(255,255,255,.18); }
.sec.dark .artquote blockquote { color: #fff; }

/* 학부모 안내 페이지 */
.pg { padding: 34px 0; border-bottom: 1px solid var(--line); }
.pg:first-child { padding-top: 0; }
.pg:last-child { border-bottom: none; }
.pg h2 { margin-bottom: 12px; }
.pg-lead {
  font-family: var(--f-display); font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.6; color: var(--ink); margin: 0 0 16px; letter-spacing: -0.01em;
}
.pg p { color: var(--ink-soft); margin: 0; }

.note {
  background: var(--paper-2);
  border-left: 4px solid var(--accent);
  border-radius: var(--r);
  padding: 18px 22px;
  font-size: 15.5px;
  color: var(--ink-soft);
  margin: 26px 0 0;
}