/* =========================================================
   TOP EDUPREP — Design tokens
   Concept: "성적표(Ledger)" — 학년별 로드맵을 성적표/생활기록부의
   줄 노트와 붉은 첨삭펜(빨간 사인펜) 모티프로 표현한다.
   ========================================================= */
:root{
  --ink:        #12213A;   /* 본문 텍스트 / 진한 네이비 */
  --ink-2:      #1D3358;   /* 서브 네이비 */
  --paper:      #EEF0E9;   /* 배경 — 미색 대신 쿨한 회록빛 종이 */
  --paper-2:    #E4E7DC;   /* 살짝 더 진한 종이 톤 (카드/구획) */
  --rule:       #C4C9B7;   /* 줄노트 괘선 */
  --rule-dark:  #9CA28C;
  --gold:       #A9812E;   /* 놋쇠 — 우등생 배지, 강조 */
  --gold-soft:  #E9DDBB;
  --oxblood:    #8A2C2C;   /* 붉은 사인펜 — 마감일 / D-Day / CTA */
  --oxblood-2:  #6F2222;
  --white:      #FCFCF9;
  --shadow:     0 18px 40px -20px rgba(18,33,58,.35);

  --font-display: "Noto Serif KR", serif;
  --font-body:    "Pretendard", "Noto Sans KR", sans-serif;
  --font-mono:    "IBM Plex Mono", monospace;

  --container: 1120px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.28;
  margin:0 0 .5em;
  letter-spacing:-.01em;
}
p{margin:0 0 1.1em;}
ul,ol{padding-left:1.25em;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}

/* skip link */
.skip-link{
  position:absolute;left:-999px;top:0;background:var(--ink);color:var(--white);
  padding:10px 16px;z-index:200;border-radius:0 0 6px 0;
}
.skip-link:focus{left:0;}

:focus-visible{outline:3px solid var(--gold);outline-offset:2px;}

/* =========================================================
   Eyebrow / labels
   ========================================================= */
.eyebrow{
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--oxblood);
  display:inline-flex;
  align-items:center;
  gap:.5em;
  margin-bottom:.9em;
}
.eyebrow::before{
  content:"";
  width:20px;height:1px;background:var(--oxblood);
}

/* =========================================================
   Top bar (지점/연락처)
   ========================================================= */
.topbar{
  background:var(--ink);
  color:#D9DCC9;
  font-family:var(--font-mono);
  font-size:.78rem;
}
.topbar .container{
  display:flex;
  flex-wrap:wrap;
  gap:6px 22px;
  align-items:center;
  padding-top:9px;padding-bottom:9px;
}
.topbar .branch-list{
  display:flex;flex-wrap:wrap;gap:4px 18px;list-style:none;padding:0;margin:0;flex:1;
}
.topbar .branch-list li::before{content:"·";margin-right:6px;color:var(--gold-soft);}
.topbar a.tel{color:var(--gold-soft);font-weight:600;}

/* =========================================================
   Header / Nav — "성적표 탭" 느낌
   ========================================================= */
.site-header{
  background:var(--paper);
  border-bottom:2px solid var(--ink);
  position:sticky;top:0;z-index:100;
}
.site-header .container{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:16px;padding-bottom:0;
  gap:20px;
}
.logo{
  font-family:var(--font-display);
  font-size:1.5rem;
  font-weight:700;
  letter-spacing:-.01em;
  padding-bottom:16px;
}
.logo small{
  display:block;font-family:var(--font-mono);font-size:.62rem;
  letter-spacing:.16em;color:var(--rule-dark);font-weight:400;text-transform:uppercase;margin-top:2px;
}
.nav-toggle{
  display:none;background:none;border:1px solid var(--ink);border-radius:4px;
  padding:8px 10px;font-family:var(--font-mono);font-size:.8rem;cursor:pointer;margin-bottom:14px;
}
.main-nav ul{
  list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:2px;
}
.main-nav a{
  display:inline-block;
  padding:12px 16px 14px;
  font-size:.94rem;
  font-weight:600;
  color:var(--ink-2);
  border-bottom:3px solid transparent;
  transition:border-color .15s, color .15s;
}
.main-nav a:hover, .main-nav a[aria-current="page"]{
  color:var(--oxblood);
  border-color:var(--oxblood);
}
.main-nav .has-sub{position:relative;}
.main-nav .sub-menu{
  list-style:none;margin:0;padding:10px;position:absolute;left:0;top:100%;
  min-width:280px;background:var(--white);border:1px solid var(--ink);
  box-shadow:var(--shadow);display:none;flex-direction:column;z-index:50;
}
.main-nav .has-sub:hover .sub-menu,
.main-nav .has-sub:focus-within .sub-menu{display:flex;}
.main-nav .sub-menu a{
  padding:10px 12px;border-bottom:1px dashed var(--rule);font-size:.88rem;font-weight:500;
}
.main-nav .sub-menu li:last-child a{border-bottom:none;}
.main-nav .sub-menu a:hover{background:var(--paper-2);border-color:var(--rule);color:var(--oxblood);}

@media (max-width: 880px){
  .nav-toggle{display:inline-block;}
  .main-nav{display:none;width:100%;}
  .main-nav.open{display:block;}
  .main-nav ul{flex-direction:column;}
  .main-nav .sub-menu{position:static;display:flex;border:none;box-shadow:none;min-width:0;padding-left:14px;}
  .main-nav a{border-bottom:1px solid var(--rule);}
  .site-header .container{flex-wrap:wrap;padding-bottom:14px;}
}

/* =========================================================
   Buttons
   ========================================================= */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  font-family:var(--font-mono);font-size:.85rem;font-weight:600;letter-spacing:.02em;
  padding:13px 22px;border:1.5px solid var(--ink);color:var(--ink);
  background:transparent;cursor:pointer;transition:all .15s;
}
.btn:hover{background:var(--ink);color:var(--white);}
.btn-primary{background:var(--oxblood);border-color:var(--oxblood);color:var(--white);}
.btn-primary:hover{background:var(--oxblood-2);border-color:var(--oxblood-2);}
.btn-gold{background:var(--gold);border-color:var(--gold);color:var(--ink);}
.btn-gold:hover{background:#8f6c24;border-color:#8f6c24;color:var(--white);}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}

/* =========================================================
   Hero — 성적표 표지
   ========================================================= */
.hero{
  background:
    repeating-linear-gradient(var(--paper) 0 40px, var(--rule) 40px 41px);
  border-bottom:2px solid var(--ink);
  padding:64px 0 56px;
  position:relative;
  overflow:hidden;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start;}
.hero h1{font-size:clamp(2rem,4vw,3rem);}
.hero .lede{font-size:1.08rem;color:var(--ink-2);max-width:46ch;}
.stamp{
  display:inline-flex;align-items:center;gap:8px;
  border:2px solid var(--oxblood);color:var(--oxblood);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;
  padding:5px 12px;transform:rotate(-2deg);text-transform:uppercase;margin-bottom:18px;
}

.report-card{
  background:var(--white);border:1px solid var(--ink);box-shadow:var(--shadow);
}
.report-card .rc-head{
  background:var(--ink);color:var(--white);padding:14px 20px;
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.08em;
  display:flex;justify-content:space-between;
}
.report-card table{width:100%;border-collapse:collapse;font-size:.92rem;}
.report-card td{padding:13px 20px;border-bottom:1px dashed var(--rule);vertical-align:top;}
.report-card tr:last-child td{border-bottom:none;}
.report-card .rc-branch{font-weight:700;font-family:var(--font-display);}
.report-card .rc-note{color:var(--rule-dark);font-size:.82rem;display:block;margin-top:2px;}

/* =========================================================
   Section scaffolding
   ========================================================= */
section{padding:72px 0;}
section.tight{padding:48px 0;}
.section-head{max-width:64ch;margin-bottom:40px;}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);}
.bg-ink{background:var(--ink);color:#E7E9DD;}
.bg-ink h2,.bg-ink h3{color:var(--white);}
.bg-ink .eyebrow{color:var(--gold-soft);}
.bg-ink .eyebrow::before{background:var(--gold-soft);}
.bg-paper2{background:var(--paper-2);}
.rule-top{border-top:2px solid var(--ink);}

/* =========================================================
   학년별 로드맵 — 시그니처 컴포넌트 (transcript ledger)
   ========================================================= */
.ledger{border-top:2px solid var(--ink);}
.ledger-row{
  display:grid;grid-template-columns:120px 1fr;gap:0 32px;
  border-bottom:1px solid var(--rule);padding:30px 0;
}
.ledger-row:hover{background:rgba(169,129,46,.06);}
.ledger-grade{
  font-family:var(--font-display);font-weight:700;
  font-size:2.1rem;color:var(--gold);line-height:1;
  border-right:1px dashed var(--rule-dark);
}
.ledger-grade span{
  display:block;font-family:var(--font-mono);font-size:.7rem;color:var(--rule-dark);
  letter-spacing:.08em;margin-top:8px;font-weight:400;
}
.ledger-body h3{font-size:1.2rem;margin-bottom:.4em;}
.ledger-tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:12px 0 0;}
.ledger-tags li{
  font-family:var(--font-mono);font-size:.72rem;border:1px solid var(--oxblood);
  color:var(--oxblood);padding:4px 9px;letter-spacing:.03em;
}

/* =========================================================
   Cards
   ========================================================= */
.grid{display:grid;gap:26px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media (max-width:880px){.grid-3,.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--white);border:1px solid var(--rule-dark);padding:28px 26px;
  display:flex;flex-direction:column;gap:10px;
}
.card .num{font-family:var(--font-mono);color:var(--gold);font-size:.85rem;}
.card h3{font-size:1.08rem;margin-bottom:2px;}
.card p{color:var(--ink-2);font-size:.94rem;margin-bottom:0;}
.card a.more{margin-top:auto;font-weight:700;color:var(--oxblood);font-size:.9rem;}

/* article page callouts */
.callout{
  border:1px solid var(--ink);border-left:6px solid var(--oxblood);
  background:var(--white);padding:20px 24px;margin:28px 0;
}
.callout .eyebrow{margin-bottom:.4em;}
.date-chip{
  display:inline-block;background:var(--ink);color:var(--white);
  font-family:var(--font-mono);font-size:.75rem;padding:4px 10px;margin:0 6px 6px 0;
}
table.exam-table{width:100%;border-collapse:collapse;margin:22px 0;font-size:.92rem;}
table.exam-table th,table.exam-table td{border:1px solid var(--rule-dark);padding:10px 14px;text-align:left;}
table.exam-table th{background:var(--ink);color:var(--white);font-family:var(--font-mono);font-weight:500;font-size:.8rem;letter-spacing:.04em;}
table.exam-table tr:nth-child(even) td{background:var(--paper-2);}

.faq details{border-bottom:1px solid var(--rule);padding:16px 0;}
.faq summary{cursor:pointer;font-weight:700;font-family:var(--font-display);font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;gap:12px;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";color:var(--oxblood);font-family:var(--font-mono);}
.faq details[open] summary::after{content:"–";}
.faq p{margin-top:12px;color:var(--ink-2);}

.breadcrumb{font-family:var(--font-mono);font-size:.78rem;color:var(--rule-dark);padding:16px 0 0;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--oxblood);}

article.article-body h2{margin-top:1.6em;font-size:1.45rem;}
article.article-body h3{margin-top:1.3em;font-size:1.15rem;color:var(--ink-2);}
article.article-body{max-width:74ch;}
.meta-row{
  display:flex;gap:16px;flex-wrap:wrap;font-family:var(--font-mono);font-size:.78rem;
  color:var(--rule-dark);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);
  padding:12px 0;margin:20px 0 34px;
}

/* related / sub nav on article pages */
.pillar-list{list-style:none;padding:0;margin:0;display:grid;gap:14px;}
.pillar-list a{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  border:1px solid var(--rule-dark);padding:18px 20px;background:var(--white);
  font-weight:700;transition:border-color .15s, color .15s;
}
.pillar-list a:hover{border-color:var(--oxblood);color:var(--oxblood);}
.pillar-list .arrow{font-family:var(--font-mono);}

/* =========================================================
   Footer
   ========================================================= */
.site-footer{background:var(--ink);color:#B7BBA6;padding:56px 0 26px;font-size:.9rem;}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px;}
.site-footer h4{color:var(--white);font-family:var(--font-mono);font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;}
.site-footer ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px;}
.site-footer a:hover{color:var(--gold-soft);}
.footer-bottom{border-top:1px solid #2A3A56;margin-top:40px;padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-family:var(--font-mono);font-size:.72rem;color:#7C8266;}
@media (max-width:880px){.footer-grid{grid-template-columns:1fr 1fr;}}

/* reveal-on-scroll (motion, respects reduced-motion) */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease, transform .5s ease;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}