/* ============================================================
   탑에듀프렙 TOP EDU PREP — Shared Stylesheet
   Design tokens
   Color   : --navy #16213A (메인) / --gold #C8A24A (인증·신뢰 액센트)
             --cream #F7F4ED (배경) / --ink #20232B (본문)
             --line #E3DDD0 (헤어라인) / --sage #5C7A66, --rose #A6485A, --sky #3D6A8A (과목 포인트)
   Type    : 'Noto Serif KR' 제목(권위/신뢰) + 'Pretendard' 본문(가독성) + 영문 유틸리티 라벨
   Layout  : 헤어라인 그리드, 인증 씰(Seal) 시그니처 모티프
   ============================================================ */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@500;700;900&display=swap');

:root{
  --navy:#16213A;
  --navy-light:#243456;
  --gold:#C8A24A;
  --gold-dim:#E4D2A4;
  --cream:#F7F4EC;
  --cream-deep:#EFEADF;
  --ink:#20232B;
  --ink-soft:#5B5F6B;
  --line:#E3DDCF;
  --sage:#5C7A66;
  --rose:#A6485A;
  --sky:#3D6A8A;
  --radius:2px;
  --max:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--cream);
  color:var(--ink);
  font-family:'Pretendard',-apple-system,'Noto Sans KR',sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.serif{
  font-family:'Noto Serif KR',serif;
  font-weight:900;
  color:var(--navy);
  letter-spacing:-0.01em;
  margin:0;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px;}
.eyebrow{
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--gold);
  font-weight:700;
  display:flex;align-items:center;gap:8px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--gold);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,244,236,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;
}
.logo{
  font-family:'Noto Serif KR',serif;
  font-weight:900;font-size:20px;color:var(--navy);
  display:flex;align-items:baseline;gap:6px;
}
.logo small{font-family:'Pretendard';font-weight:600;font-size:10px;letter-spacing:.14em;color:var(--gold);text-transform:uppercase;}
nav.main-nav{display:flex;gap:28px;font-size:14.5px;font-weight:600;}
nav.main-nav a{position:relative;padding:6px 0;color:var(--navy);}
nav.main-nav a.active{color:var(--gold);}
nav.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--gold);
  transition:width .25s ease;
}
nav.main-nav a:hover::after,nav.main-nav a.active::after{width:100%;}
.nav-cta{
  background:var(--navy);color:#fff !important;
  padding:10px 18px;border-radius:var(--radius);font-size:13.5px;font-weight:700;
  white-space:nowrap;
}
.burger{display:none;background:none;border:none;font-size:22px;color:var(--navy);cursor:pointer;}

/* mobile nav */
@media (max-width:880px){
  nav.main-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    background:var(--cream);
    flex-direction:column;gap:0;padding:8px 24px 40px;
    transform:translateY(-110%);opacity:0;
    transition:all .3s ease;pointer-events:none;
    overflow-y:auto;
  }
  nav.main-nav.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  nav.main-nav a{padding:16px 0;border-bottom:1px solid var(--line);font-size:17px;}
  nav.main-nav .nav-cta{margin-top:18px;text-align:center;}
  .burger{display:block;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 64px;
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-light) 100%);
  color:#fff;
}
.hero .wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;}
.hero h1{color:#fff;font-size:clamp(30px,4vw,46px);line-height:1.25;margin:14px 0 18px;}
.hero p.lead{color:#D8DCE6;font-size:17px;max-width:520px;margin-bottom:28px;}
.hero .eyebrow{color:var(--gold-dim);}
.hero .eyebrow::before{background:var(--gold-dim);}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 24px;border-radius:var(--radius);font-weight:700;font-size:14.5px;
  border:1px solid transparent;
}
.btn-gold{background:var(--gold);color:var(--navy);}
.btn-outline{border:1px solid rgba(255,255,255,.45);color:#fff;}
.btn-navy{background:var(--navy);color:#fff;}

/* Seal signature */
.seal{
  width:200px;height:200px;border-radius:50%;
  border:1.5px solid var(--gold);
  display:flex;align-items:center;justify-content:center;
  position:relative;margin:0 auto;
  background:radial-gradient(circle,rgba(200,162,74,.08),transparent 70%);
}
.seal::before{
  content:"";position:absolute;inset:14px;border:1px dashed rgba(200,162,74,.55);border-radius:50%;
}
.seal .seal-text{
  width:120px;text-align:center;color:var(--gold);
}
.seal .seal-text strong{display:block;font-family:'Noto Serif KR';font-size:26px;color:#fff;}
.seal .seal-text span{font-size:10px;letter-spacing:.16em;text-transform:uppercase;}

/* ---------- Sections ---------- */
section{padding:80px 0;}
section.tight{padding:56px 0;}
.section-head{max-width:680px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3vw,32px);margin-top:12px;line-height:1.35;}
.section-head p{color:var(--ink-soft);margin-top:14px;font-size:15.5px;}

.alt-bg{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* grid cards */
.grid{display:grid;gap:24px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media (max-width:880px){
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}
  .hero .wrap{grid-template-columns:1fr;text-align:left;}
  .seal{margin-top:24px;}
}

.card{
  background:#fff;border:1px solid var(--line);padding:30px 26px;border-radius:var(--radius);
}
.card .num{font-family:'Noto Serif KR';color:var(--gold);font-size:13px;letter-spacing:.1em;}
.card h3{font-size:18px;margin:10px 0 10px;}
.card p{color:var(--ink-soft);font-size:14.5px;}

/* philosophy quote block */
.philosophy{
  background:var(--navy);color:#fff;padding:72px 0;
}
.philosophy blockquote{
  font-family:'Noto Serif KR';font-size:clamp(22px,2.6vw,30px);line-height:1.55;
  max-width:820px;margin:0 auto;text-align:center;font-weight:700;
}
.philosophy blockquote span{color:var(--gold);}
.philosophy .signoff{text-align:center;margin-top:24px;color:#A9B0C2;font-size:13.5px;letter-spacing:.06em;}

/* stat row */
.stats{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:36px 0;}
.stat{text-align:center;flex:1;min-width:120px;}
.stat strong{display:block;font-family:'Noto Serif KR';font-size:34px;color:var(--navy);}
.stat span{font-size:13px;color:var(--ink-soft);}

/* timeline / process */
.process{display:flex;flex-direction:column;gap:0;}
.proc-item{display:grid;grid-template-columns:60px 1fr;gap:20px;padding:26px 0;border-bottom:1px solid var(--line);}
.proc-item .pn{font-family:'Noto Serif KR';color:var(--gold);font-size:22px;}
.proc-item h4{margin:0 0 6px;font-size:17px;color:var(--navy);font-family:'Noto Serif KR';}
.proc-item p{margin:0;color:var(--ink-soft);font-size:14.5px;}

/* branch cards */
.branch-card{border:1px solid var(--line);background:#fff;padding:26px;border-radius:var(--radius);}
.branch-card .tag{display:inline-block;background:var(--cream-deep,var(--cream));color:var(--navy);font-size:11.5px;font-weight:700;padding:4px 10px;border:1px solid var(--line);margin-bottom:12px;}
.branch-card h3{font-size:19px;margin-bottom:6px;}
.branch-card p{color:var(--ink-soft);font-size:14px;margin:4px 0;}

/* testimonial */
.testi{background:#fff;border:1px solid var(--line);padding:26px;border-radius:var(--radius);}
.testi p{font-size:14.5px;color:var(--ink);}
.testi .who{margin-top:14px;font-size:13px;color:var(--ink-soft);font-weight:600;}
.testi .score{display:inline-block;margin-top:10px;background:var(--cream);border:1px solid var(--gold-dim);color:var(--navy);font-size:12px;font-weight:700;padding:4px 10px;}

/* FAQ */
.faq-item{border-bottom:1px solid var(--line);padding:20px 0;}
.faq-item summary{cursor:pointer;font-weight:700;color:var(--navy);font-size:15.5px;list-style:none;display:flex;justify-content:space-between;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";color:var(--gold);font-size:20px;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{color:var(--ink-soft);margin-top:12px;font-size:14.5px;}

/* CTA band */
.cta-band{background:var(--navy);color:#fff;text-align:center;padding:64px 0;}
.cta-band h2{color:#fff;font-size:clamp(22px,3vw,30px);}
.cta-band p{color:#C7CCDA;margin:14px auto 26px;max-width:520px;}

/* footer */
footer{background:var(--navy);color:#AEB4C4;padding:56px 0 28px;font-size:13.5px;}
footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
footer h5{color:#fff;font-family:'Pretendard';font-size:13px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;}
footer a{color:#AEB4C4;}
footer a:hover{color:var(--gold-dim);}
footer .flogo{font-family:'Noto Serif KR';color:#fff;font-size:19px;font-weight:900;margin-bottom:10px;}
footer .legal{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:12px;color:#7B82A0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}
@media (max-width:880px){footer .wrap{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){footer .wrap{grid-template-columns:1fr;}}

/* breadcrumb */
.crumb{font-size:12.5px;color:var(--ink-soft);padding:18px 0 0;}
.crumb a{color:var(--ink-soft);}
.crumb a:hover{color:var(--gold);}

/* utility accent classes per subject */
.accent-math{--accent:var(--gold);}
.accent-eng{--accent:var(--rose);}
.accent-sci{--accent:var(--sage);}
.accent-abroad{--accent:var(--sky);}
.dot{width:8px;height:8px;border-radius:50%;background:var(--accent,var(--gold));display:inline-block;margin-right:8px;}

/* table */
table.compare{width:100%;border-collapse:collapse;font-size:14px;}
table.compare th,table.compare td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
table.compare th{background:#fff;color:var(--navy);font-family:'Noto Serif KR';font-size:13.5px;}
table.compare td{background:#fff;color:var(--ink-soft);}

/* blog */
.blog-hero{background:var(--cream-deep,var(--cream));border-bottom:1px solid var(--line);padding:64px 0 40px;}
article.post{max-width:760px;margin:0 auto;padding:48px 24px 80px;}
article.post h2{font-size:24px;margin:42px 0 14px;}
article.post h3{font-size:18px;margin:28px 0 10px;color:var(--navy);}
article.post p{margin:0 0 16px;color:var(--ink);font-size:15.5px;}
article.post ul{padding-left:20px;color:var(--ink);font-size:15.5px;}
article.post li{margin-bottom:8px;}
.checklist{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;margin:24px 0;}
.checklist li{list-style:none;display:flex;gap:10px;align-items:flex-start;margin-bottom:14px;}
.checklist li::before{content:"✓";color:var(--gold);font-weight:900;}
.post-meta{display:flex;gap:14px;font-size:12.5px;color:var(--ink-soft);margin-top:10px;}
.callout{
  border-left:3px solid var(--gold);background:#fff;padding:18px 20px;font-size:14.5px;color:var(--ink-soft);margin:24px 0;
}