/* ============================================================
   TopEduPrep — Design Tokens
   Concept: "입학 서류(Admissions Dossier)" — 대학 인장과 성적 증명서에서
   차용한 관인(官印)·활자 인쇄 톤. 신뢰감 있는 인장 배지가 시그니처 요소.
   ============================================================ */

:root {
  --ink: #14213D;          /* 본문/헤드라인 */
  --ink-soft: #2B3A5A;
  --slate: #55606E;        /* 보조 텍스트 */
  --paper: #F5F5EF;        /* 배경(쿨 아이보리) */
  --paper-deep: #ECEAE0;   /* 섹션 구분 배경 */
  --line: #D9D6C8;         /* 헤어라인 */
  --emerald: #1F5C4A;      /* 프레스티지·성장 accent */
  --emerald-deep: #143E32;
  --gold: #B8862B;         /* 인장 골드 */
  --gold-soft: #E7D6A8;
  --white: #FFFFFF;

  --serif: "Noto Serif KR", "Nanum Myeongjo", serif;
  --sans: "Noto Sans KR", "Pretendard", -apple-system, sans-serif;
  --mono: "IBM Plex Mono", "Consolas", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Skip link / focus ---------- */
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: var(--white);
  padding: 10px 16px; z-index: 200;
}
.skip-link:focus { left: 12px; top: 12px; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- Top notice bar ---------- */
.notice-bar {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .02em;
}
.notice-bar .wrap {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 28px; gap: 12px; flex-wrap: wrap;
}
.notice-bar a { border-bottom: 1px solid rgba(245,245,239,.35); }
.notice-bar a:hover { border-color: var(--gold-soft); color: var(--gold-soft); }

/* ---------- Header / Nav ---------- */
header.site {
  position: sticky; top: 0; z-index: 100;
  background: rgba(245,245,239,.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.nav-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--serif); font-weight: 700; font-size: 21px;
  color: var(--ink);
}
.brand .seal-mini { width: 30px; height: 30px; flex: none; }
.brand small {
  display: block; font-family: var(--mono); font-size: 10px;
  letter-spacing: .12em; color: var(--slate); font-weight: 400;
}

nav.main ul {
  list-style: none; display: flex; gap: 26px; margin: 0; padding: 0;
  font-size: 14.5px;
}
nav.main a {
  position: relative; padding: 4px 0; color: var(--ink-soft);
}
nav.main a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--gold); transform: scaleX(0);
  transform-origin: left; transition: transform .25s ease;
}
nav.main a:hover::after, nav.main a[aria-current="page"]::after { transform: scaleX(1); }
nav.main a[aria-current="page"] { color: var(--emerald); font-weight: 700; }

.btn-call {
  font-family: var(--mono); font-size: 13px; font-weight: 600;
  background: var(--emerald); color: var(--white);
  padding: 9px 16px; border-radius: 3px; white-space: nowrap;
}
.btn-call:hover { background: var(--emerald-deep); }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--ink); border-radius: 3px;
  width: 38px; height: 34px; cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 18px; height: 2px; background: var(--ink);
  margin: 0 auto; position: relative; transition: .2s;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

/* ---------- Seal badge (signature element) ---------- */
.seal {
  --sealsize: 128px;
  width: var(--sealsize); height: var(--sealsize);
  border-radius: 50%;
  border: 2px solid var(--gold);
  display: flex; align-items: center; justify-content: center;
  position: relative; flex: none;
}
.seal::before {
  content: ""; position: absolute; inset: 7px;
  border: 1px dashed var(--gold-soft); border-radius: 50%;
}
.seal-text {
  font-family: var(--serif); text-align: center; color: var(--gold);
  font-size: 13px; line-height: 1.35; font-weight: 700;
}
.seal-text .num { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; display:block; color: var(--emerald); margin-top:2px;}

/* ---------- Hero ---------- */
.hero {
  padding: 76px 0 64px;
  background:
    linear-gradient(180deg, transparent, var(--paper) 92%),
    repeating-linear-gradient(180deg, transparent 0 39px, var(--line) 39px 40px);
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center;
}
.eyebrow {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .14em;
  color: var(--emerald); text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--emerald); }

h1.display {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(34px, 4.4vw, 54px); line-height: 1.25; margin: 0 0 20px;
  letter-spacing: -.01em;
}
h1.display em {
  font-style: normal; color: var(--emerald);
  background: linear-gradient(180deg, transparent 62%, var(--gold-soft) 62%);
}
.lede { font-size: 17.5px; color: var(--slate); max-width: 52ch; margin: 0 0 30px; }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 3px; font-weight: 700; font-size: 14.5px;
  border: 1px solid transparent;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--emerald-deep); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }

.hero-seal-block {
  display: flex; flex-direction: column; align-items: center; gap: 18px;
  justify-self: center;
}
.hero-seal-block .seal { --sealsize: 190px; }
.hero-seal-block .seal-text { font-size: 16px; }
.locations-inline {
  font-family: var(--mono); font-size: 12px; color: var(--slate); text-align: center;
}

/* ---------- Section shell ---------- */
section { padding: 68px 0; }
.section-deep { background: var(--paper-deep); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 40px; flex-wrap: wrap; }
.section-head .doc-no { font-family: var(--mono); font-size: 12px; color: var(--gold); letter-spacing: .1em; margin-bottom: 8px; display:block; }
h2.section-title { font-family: var(--serif); font-size: clamp(24px, 3vw, 32px); margin: 0; }
.section-desc { color: var(--slate); max-width: 46ch; margin: 10px 0 0; font-size: 15px; }

/* ---------- Guide card grid ---------- */
.guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.guide-card {
  background: var(--white); border: 1px solid var(--line); border-radius: 4px;
  padding: 28px 26px; position: relative; transition: box-shadow .2s, transform .2s;
}
.guide-card:hover { box-shadow: 0 14px 30px -18px rgba(20,33,61,.35); transform: translateY(-2px); }
.guide-card .doc-tag {
  font-family: var(--mono); font-size: 11px; color: var(--emerald);
  border: 1px solid var(--emerald); border-radius: 20px; padding: 3px 10px;
  display: inline-block; margin-bottom: 14px; letter-spacing: .04em;
}
.guide-card h3 { font-family: var(--serif); font-size: 20px; margin: 0 0 10px; line-height: 1.4; }
.guide-card p { color: var(--slate); font-size: 14.5px; margin: 0 0 16px; }
.guide-card .read-more { font-weight: 700; font-size: 13.5px; color: var(--ink); border-bottom: 1px solid var(--gold); padding-bottom: 2px; }

/* ---------- Why / feature strip ---------- */
.feature-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; background: var(--white); }
.feature-strip .feature { padding: 26px 22px; border-right: 1px solid var(--line); }
.feature-strip .feature:last-child { border-right: none; }
.feature .stat { font-family: var(--mono); font-size: 26px; color: var(--emerald); font-weight: 700; }
.feature .label { font-size: 13.5px; color: var(--slate); margin-top: 6px; }

/* ---------- Locations ---------- */
.loc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.loc-card { background: var(--white); border: 1px solid var(--line); border-radius: 4px; padding: 24px; }
.loc-card .campus { font-family: var(--serif); font-size: 19px; margin-bottom: 6px; }
.loc-card .dist { font-family: var(--mono); font-size: 12.5px; color: var(--emerald); }
.loc-card p { color: var(--slate); font-size: 14px; margin: 10px 0 0; }

/* ---------- FAQ / accordion ---------- */
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 18px 4px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-weight: 700; font-size: 15.5px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-family: var(--mono); font-size: 20px; color: var(--gold); flex: none; }
.faq-item[open] summary::after { content: "–"; }
.faq-item .faq-a { padding: 0 4px 20px; color: var(--slate); font-size: 14.5px; max-width: 68ch; }

/* ---------- Article page ---------- */
.article-hero { padding: 52px 0 40px; border-bottom: 1px solid var(--line); }
.breadcrumb { font-family: var(--mono); font-size: 12px; color: var(--slate); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--emerald); }
.article-meta { display: flex; gap: 16px; align-items: center; font-family: var(--mono); font-size: 12px; color: var(--slate); margin-top: 18px; flex-wrap: wrap; }
.article-meta .tag { border: 1px solid var(--line); padding: 3px 9px; border-radius: 20px; }

.article-body { max-width: 760px; margin: 0 auto; padding: 52px 28px 20px; }
.article-body h2 { font-family: var(--serif); font-size: 25px; margin: 46px 0 16px; padding-top: 6px; border-top: 3px solid var(--gold); }
.article-body h2:first-child { margin-top: 0; }
.article-body h3 { font-family: var(--sans); font-size: 17px; color: var(--emerald-deep); margin: 26px 0 10px; }
.article-body p { color: var(--ink-soft); font-size: 16px; margin: 0 0 16px; }
.article-body ul, .article-body ol { color: var(--ink-soft); font-size: 15.5px; padding-left: 22px; }
.article-body li { margin-bottom: 8px; }
.article-body table { width: 100%; border-collapse: collapse; margin: 18px 0 26px; font-size: 14.5px; }
.article-body th, .article-body td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.article-body th { background: var(--paper-deep); font-family: var(--mono); font-size: 12.5px; letter-spacing: .03em; }
.callout {
  background: var(--white); border-left: 3px solid var(--emerald); border-radius: 0 4px 4px 0;
  padding: 18px 20px; margin: 24px 0; font-size: 14.5px; color: var(--ink-soft);
}
.callout strong { color: var(--emerald-deep); }

.article-cta {
  margin-top: 44px; padding: 28px; background: var(--ink); color: var(--paper);
  border-radius: 4px; display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap;
}
.article-cta h3 { font-family: var(--serif); margin: 0 0 6px; font-size: 19px; }
.article-cta p { margin: 0; color: rgba(245,245,239,.75); font-size: 14px; }

.related-links { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin: 20px 0 0; }
.related-links a { display: block; font-size: 13px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 4px; background: var(--white); }
.related-links a:hover { border-color: var(--gold); }

/* ---------- Contact / footer ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.contact-list .k { font-family: var(--mono); font-size: 12px; color: var(--emerald); width: 92px; flex: none; padding-top: 2px; }
.contact-list .v a:hover { color: var(--emerald); border-bottom: 1px solid var(--emerald); }

footer.site {
  background: var(--ink); color: rgba(245,245,239,.7);
  padding: 40px 0 26px; font-size: 13px;
}
footer.site .foot-top { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: 24px; }
footer.site .brand { color: var(--paper); }
footer.site nav ul { list-style: none; display: flex; gap: 18px; padding: 0; margin: 0; flex-wrap: wrap; }
footer.site a:hover { color: var(--gold-soft); }
footer.site .foot-bottom { border-top: 1px solid rgba(245,245,239,.15); padding-top: 18px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-family: var(--mono); font-size: 11.5px; }

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

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-seal-block { order: -1; }
  .guide-grid, .loc-grid, .related-links { grid-template-columns: 1fr; }
  .feature-strip { grid-template-columns: repeat(2, 1fr); }
  .feature-strip .feature:nth-child(2) { border-right: none; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  nav.main { position: fixed; inset: 60px 0 auto 0; background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 10px 28px 20px; transform: translateY(-8px); opacity: 0; pointer-events: none; transition: .2s; }
  nav.main.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  nav.main ul { flex-direction: column; gap: 4px; }
  nav.main ul li { border-bottom: 1px solid var(--line); }
  nav.main ul li a { display: block; padding: 12px 0; }
  .nav-toggle { display: block; }
  .btn-call { display: none; }
  .feature-strip { grid-template-columns: 1fr; }
  .feature-strip .feature { border-right: none; border-bottom: 1px solid var(--line); }
}