/* =========================================================
   TopEduPrep — Compass System
   압구정 · 잠실 · 센텀 온라인전문 SAT·ACT·AP·IB 학원
   ========================================================= */

:root{
  --ink:        #0B1626;   /* deep navy — primary dark */
  --ink-soft:   #16233B;   /* navy panel */
  --paper:      #F6F5F1;   /* warm ivory background */
  --paper-dim:  #EDEBE3;   /* recessed panel on paper */
  --coral:      #FF5A36;   /* primary CTA / energy accent */
  --coral-dark: #E14523;
  --gold:       #C9A227;   /* premium / badge accent */
  --gold-soft:  #F4E9C8;
  --slate:      #47536B;   /* secondary text */
  --line:       #DCD8CC;   /* hairline border on paper */
  --line-dark:  #2A3852;   /* hairline border on navy */
  --white:      #FFFFFF;

  --font-ui:   'Pretendard', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --maxw: 1180px;
  --radius: 14px;
  --radius-sm: 8px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-ui);
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,p{ margin:0; }
button{ font-family:inherit; cursor:pointer; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 24px; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
}

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

/* ---------- Eyebrow / Section labels ---------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono);
  font-size:12.5px; letter-spacing:.08em; text-transform:uppercase;
  color:var(--coral); font-weight:600;
}
.eyebrow::before{
  content:""; width:16px; height:1px; background:var(--coral);
}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(246,245,241,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 24px; max-width:var(--maxw); margin:0 auto;
}
.brand{ display:flex; align-items:center; gap:10px; font-weight:800; font-size:19px; letter-spacing:-.01em; }
.brand .mark{ width:34px; height:34px; flex:none; }
.brand .sub{ font-family:var(--font-mono); font-size:10.5px; color:var(--slate); font-weight:500; letter-spacing:.02em; display:block; }

.nav-links{ display:flex; align-items:center; gap:2px; }
.nav-links a{
  padding:10px 14px; font-size:14.5px; font-weight:600; color:var(--ink);
  border-radius:8px; transition:background .15s ease, color .15s ease;
}
.nav-links a:hover{ background:var(--paper-dim); }
.nav-links a.active{ color:var(--coral); }

.nav-cta{
  display:flex; align-items:center; gap:10px;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:11px 20px; border-radius:999px; font-weight:700; font-size:14.5px;
  border:1.5px solid transparent; transition:transform .15s ease, background .15s ease, border-color .15s ease;
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-1px); }
.btn-coral{ background:var(--coral); color:var(--white); }
.btn-coral:hover{ background:var(--coral-dark); }
.btn-ghost{ border-color:var(--ink); color:var(--ink); background:transparent; }
.btn-ghost:hover{ background:var(--ink); color:var(--white); }
.btn-ghost-light{ border-color:rgba(255,255,255,.35); color:var(--white); }
.btn-ghost-light:hover{ background:rgba(255,255,255,.12); }
.btn-lg{ padding:15px 28px; font-size:15.5px; }
.btn-block{ width:100%; }

.menu-toggle{ display:none; background:none; border:none; padding:8px; }
.menu-toggle span{ display:block; width:22px; height:2px; background:var(--ink); margin:5px 0; }

/* ---------- Buttons row ---------- */
.cta-row{ display:flex; gap:12px; flex-wrap:wrap; }

/* ---------- Hero ---------- */
.hero{
  padding:64px 0 56px;
  background:
    radial-gradient(880px 420px at 82% -10%, rgba(255,90,54,.10), transparent 60%),
    var(--paper);
}
.hero-grid{
  display:grid; grid-template-columns:1.15fr .85fr; gap:48px; align-items:center;
}
.hero h1{
  font-size:clamp(32px,4.4vw,54px); line-height:1.16; letter-spacing:-.02em; font-weight:800;
  margin:18px 0 20px;
}
.hero h1 em{ font-style:normal; color:var(--coral); }
.hero p.lead{ font-size:17.5px; color:var(--slate); max-width:520px; margin-bottom:28px; }

/* ---------- D-Day compass widget (signature element) ---------- */
.dday-card{
  background:var(--ink); color:var(--white);
  border-radius:20px; padding:28px 26px;
  border:1px solid var(--line-dark);
  position:relative; overflow:hidden;
}
.dday-card::after{
  content:""; position:absolute; right:-40px; top:-40px; width:180px; height:180px;
  border-radius:50%; border:1px solid rgba(255,255,255,.08);
}
.dday-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:18px; }
.dday-head .compass-icon{ width:26px; height:26px; animation:spin-slow 18s linear infinite; }
@keyframes spin-slow{ to{ transform:rotate(360deg);} }
.dday-label{ font-family:var(--font-mono); font-size:11.5px; letter-spacing:.08em; color:#9FB0CE; text-transform:uppercase; }
.dday-exam{ font-size:15.5px; font-weight:700; margin-bottom:4px; }
.dday-number{
  font-family:var(--font-mono); font-weight:700; font-size:64px; line-height:1;
  color:var(--coral); letter-spacing:-.02em; margin:6px 0 2px;
}
.dday-date{ font-size:13.5px; color:#B7C2D8; margin-bottom:20px; }
.dday-ticker{ border-top:1px solid var(--line-dark); padding-top:16px; display:flex; flex-direction:column; gap:10px; }
.dday-ticker-row{ display:flex; align-items:center; justify-content:space-between; font-size:13px; }
.dday-ticker-row .exam-name{ color:#CBD5E6; font-weight:600; }
.dday-ticker-row .exam-date{ font-family:var(--font-mono); color:#8B9BBB; }
.dday-ticker-row .exam-d{ font-family:var(--font-mono); color:var(--gold); font-weight:700; }

/* ---------- Stats strip ---------- */
.stats-strip{ background:var(--ink-soft); }
.stats-grid{ display:grid; grid-template-columns:repeat(4,1fr); }
.stat{ padding:34px 24px; text-align:center; border-left:1px solid var(--line-dark); }
.stat:first-child{ border-left:none; }
.stat .num{ font-family:var(--font-mono); font-weight:700; font-size:32px; color:var(--white); }
.stat .num span{ color:var(--coral); }
.stat .lbl{ font-size:13px; color:#9FB0CE; margin-top:6px; }

/* ---------- Section basics ---------- */
.section{ padding:84px 0; }
.section-tight{ padding:56px 0; }
.section-head{ max-width:640px; margin-bottom:44px; }
.section-head h2{ font-size:clamp(26px,3vw,36px); font-weight:800; letter-spacing:-.02em; margin:14px 0 12px; }
.section-head p{ color:var(--slate); font-size:16px; }
.on-ink{ background:var(--ink); color:var(--white); }
.on-ink .section-head p{ color:#B7C2D8; }
.on-dim{ background:var(--paper-dim); }

/* ---------- Feature cards (3 강점) ---------- */
.feature-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.feature-card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  padding:30px 26px; transition:border-color .15s ease, transform .15s ease;
}
.feature-card:hover{ border-color:var(--coral); transform:translateY(-3px); }
.feature-card .fi{ width:44px; height:44px; margin-bottom:18px; }
.feature-card h3{ font-size:19px; font-weight:800; margin-bottom:10px; }
.feature-card p{ color:var(--slate); font-size:14.5px; }
.feature-card .tag{
  display:inline-block; margin-top:14px; font-family:var(--font-mono); font-size:11px;
  color:var(--coral); background:#FFF0EB; padding:4px 10px; border-radius:999px; font-weight:700;
}

/* ---------- Subject / curriculum cards ---------- */
.subject-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.subject-card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  padding:26px; display:flex; flex-direction:column; gap:12px; position:relative;
}
.subject-card .badge{
  align-self:flex-start; font-family:var(--font-mono); font-size:11px; font-weight:700;
  color:var(--ink); background:var(--gold-soft); border:1px solid var(--gold); padding:3px 10px; border-radius:999px;
}
.subject-card h3{ font-size:20px; font-weight:800; }
.subject-card p{ color:var(--slate); font-size:14px; }
.subject-card ul{ display:flex; flex-direction:column; gap:6px; margin-top:6px; }
.subject-card ul li{ font-size:13.5px; color:var(--ink); padding-left:16px; position:relative; }
.subject-card ul li::before{ content:"—"; position:absolute; left:0; color:var(--coral); }
.subject-card a.more{ margin-top:auto; font-weight:700; font-size:13.5px; color:var(--coral); }

/* ---------- Locations strip ---------- */
.loc-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.loc-card{
  border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:var(--white);
}
.loc-card .loc-top{ background:var(--ink); color:var(--white); padding:20px 22px; }
.loc-card .loc-top .campus{ font-family:var(--font-mono); font-size:11.5px; letter-spacing:.06em; color:var(--gold); text-transform:uppercase; }
.loc-card .loc-top h3{ font-size:21px; font-weight:800; margin-top:6px; }
.loc-card .loc-body{ padding:20px 22px; }
.loc-card .loc-body .line{ display:flex; gap:10px; font-size:13.5px; color:var(--slate); margin-bottom:8px; }
.loc-card .loc-body .line strong{ color:var(--ink); font-weight:700; min-width:52px; }

/* ---------- Timeline (process) ---------- */
.timeline{ display:flex; flex-direction:column; }
.tl-item{ display:grid; grid-template-columns:70px 1px 1fr; gap:24px; padding-bottom:36px; position:relative; }
.tl-item:last-child{ padding-bottom:0; }
.tl-item .tl-idx{ font-family:var(--font-mono); font-weight:700; font-size:14px; color:var(--coral); padding-top:2px; }
.tl-item .tl-line{ background:var(--line); position:relative; }
.tl-item .tl-line::before{
  content:""; position:absolute; top:4px; left:-4px; width:9px; height:9px; border-radius:50%;
  background:var(--coral); border:2px solid var(--paper);
}
.tl-item:last-child .tl-line{ background:transparent; }
.tl-item h4{ font-size:17px; font-weight:800; margin-bottom:6px; }
.tl-item p{ font-size:14.5px; color:var(--slate); max-width:520px; }

/* ---------- Testimonials ---------- */
.review-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.review-card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius); padding:26px;
  display:flex; flex-direction:column; gap:14px;
}
.review-card .stars{ color:var(--gold); font-size:14px; letter-spacing:2px; }
.review-card p.quote{ font-size:14.5px; color:var(--ink); line-height:1.7; }
.review-card .who{ display:flex; align-items:center; gap:10px; margin-top:auto; padding-top:8px; border-top:1px solid var(--line); }
.avatar{
  width:36px; height:36px; border-radius:50%; background:var(--ink); color:var(--white);
  display:flex; align-items:center; justify-content:center; font-family:var(--font-mono); font-size:12px; font-weight:700;
}
.who .meta{ font-size:12.5px; color:var(--slate); }
.who .meta strong{ display:block; color:var(--ink); font-size:13.5px; }

/* ---------- Table (exam calendar / curriculum) ---------- */
.table-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius); background:var(--white); }
table{ width:100%; border-collapse:collapse; min-width:640px; }
th,td{ text-align:left; padding:14px 18px; font-size:14px; border-bottom:1px solid var(--line); }
thead th{ background:var(--paper-dim); font-family:var(--font-mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.05em; color:var(--slate); }
tbody tr:last-child td{ border-bottom:none; }
td.exam-name{ font-weight:700; }
td .mono{ font-family:var(--font-mono); color:var(--slate); }
.pill{ display:inline-block; padding:3px 9px; border-radius:999px; font-size:11.5px; font-weight:700; font-family:var(--font-mono); }
.pill-coral{ background:#FFF0EB; color:var(--coral-dark); }
.pill-gold{ background:var(--gold-soft); color:#8A6D12; }
.pill-slate{ background:var(--paper-dim); color:var(--slate); }

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink); color:var(--white); border-radius:24px; padding:56px 48px;
  display:flex; align-items:center; justify-content:space-between; gap:32px; flex-wrap:wrap;
  position:relative; overflow:hidden;
}
.cta-band::before{
  content:""; position:absolute; left:-60px; bottom:-80px; width:260px; height:260px; border-radius:50%;
  border:1px solid rgba(255,255,255,.08);
}
.cta-band h2{ font-size:clamp(24px,2.6vw,32px); font-weight:800; margin-bottom:10px; max-width:520px; }
.cta-band p{ color:#B7C2D8; font-size:15px; }

/* ---------- Footer ---------- */
footer{ background:var(--ink); color:#B7C2D8; padding:56px 0 28px; margin-top:0; }
.foot-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:36px; border-bottom:1px solid var(--line-dark); }
.foot-brand .brand{ color:var(--white); }
.foot-brand p{ font-size:13.5px; margin-top:14px; max-width:280px; color:#8B9BBB; }
.foot-col h5{ font-family:var(--font-mono); font-size:11.5px; letter-spacing:.06em; text-transform:uppercase; color:#7C8BAD; margin-bottom:14px; }
.foot-col ul{ display:flex; flex-direction:column; gap:10px; }
.foot-col a{ font-size:14px; color:#CBD5E6; }
.foot-col a:hover{ color:var(--coral); }
.foot-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:22px; font-size:12.5px; color:#66759A; flex-wrap:wrap; gap:10px; }
.foot-social{ display:flex; gap:10px; }
.foot-social a{ width:34px; height:34px; border-radius:50%; border:1px solid var(--line-dark); display:flex; align-items:center; justify-content:center; }
.foot-social a:hover{ border-color:var(--coral); color:var(--coral); }

/* ---------- Page hero (sub pages) ---------- */
.page-hero{ padding:52px 0 40px; background:var(--ink); color:var(--white); }
.page-hero .eyebrow{ color:var(--coral); }
.page-hero h1{ font-size:clamp(28px,3.6vw,42px); font-weight:800; margin:14px 0 12px; letter-spacing:-.02em; }
.page-hero p{ color:#B7C2D8; font-size:16px; max-width:560px; }
.breadcrumb{ font-family:var(--font-mono); font-size:12px; color:#8B9BBB; margin-bottom:14px; }
.breadcrumb a{ color:#8B9BBB; } .breadcrumb a:hover{ color:var(--coral); }

/* ---------- Sidebar layout (curriculum / exam-info) ---------- */
.two-col{ display:grid; grid-template-columns:260px 1fr; gap:40px; align-items:start; }
.side-nav{ position:sticky; top:96px; display:flex; flex-direction:column; gap:4px; }
.side-nav a{ padding:10px 14px; border-radius:8px; font-size:14px; font-weight:600; color:var(--slate); border-left:2px solid transparent; }
.side-nav a:hover{ background:var(--paper-dim); color:var(--ink); }
.side-nav a.active{ color:var(--coral); border-left-color:var(--coral); background:#FFF0EB; }

/* ---------- Mock test widget ---------- */
.mt-card{ background:var(--white); border:1px solid var(--line); border-radius:var(--radius); padding:0; overflow:hidden; }
.mt-top{ display:flex; align-items:center; justify-content:space-between; padding:18px 24px; background:var(--ink); color:var(--white); }
.mt-top .mt-meta{ font-family:var(--font-mono); font-size:12px; color:#9FB0CE; }
.mt-timer{ font-family:var(--font-mono); font-weight:700; font-size:18px; color:var(--coral); }
.mt-progress{ height:4px; background:var(--paper-dim); }
.mt-progress-bar{ height:100%; background:var(--coral); width:0%; transition:width .25s ease; }
.mt-body{ padding:32px 28px; }
.mt-qtag{ font-family:var(--font-mono); font-size:11.5px; color:var(--coral); font-weight:700; margin-bottom:10px; display:block; }
.mt-question{ font-size:18px; font-weight:700; margin-bottom:22px; line-height:1.55; }
.mt-options{ display:flex; flex-direction:column; gap:10px; }
.mt-opt{
  display:flex; align-items:center; gap:12px; padding:14px 16px; border:1.5px solid var(--line); border-radius:10px;
  cursor:pointer; transition:border-color .15s ease, background .15s ease; font-size:14.5px;
}
.mt-opt:hover{ border-color:var(--coral); }
.mt-opt .k{
  width:26px; height:26px; border-radius:50%; border:1.5px solid var(--line); flex:none;
  display:flex; align-items:center; justify-content:center; font-family:var(--font-mono); font-size:12px; font-weight:700;
}
.mt-opt.selected{ border-color:var(--coral); background:#FFF6F3; }
.mt-opt.selected .k{ background:var(--coral); border-color:var(--coral); color:var(--white); }
.mt-opt.correct{ border-color:#2E9E5B; background:#EEFAF2; }
.mt-opt.correct .k{ background:#2E9E5B; border-color:#2E9E5B; color:var(--white); }
.mt-opt.incorrect{ border-color:var(--coral); background:#FFF0EB; }
.mt-explain{ margin-top:18px; padding:16px 18px; background:var(--paper-dim); border-radius:10px; font-size:13.5px; color:var(--slate); display:none; }
.mt-explain.show{ display:block; }
.mt-foot{ display:flex; justify-content:space-between; align-items:center; padding:18px 28px; border-top:1px solid var(--line); }
.mt-dots{ display:flex; gap:6px; }
.mt-dots span{ width:8px; height:8px; border-radius:50%; background:var(--line); }
.mt-dots span.done{ background:var(--coral); }
.mt-dots span.now{ background:var(--ink); }
.mt-result{ padding:48px 32px; text-align:center; display:none; }
.mt-result.show{ display:block; }
.mt-result .score-ring{ margin:0 auto 20px; }
.mt-result h3{ font-size:26px; font-weight:800; margin-bottom:8px; }
.mt-result p{ color:var(--slate); font-size:14.5px; max-width:400px; margin:0 auto 24px; }

/* ---------- Utility ---------- */
.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:center; }
.tag-row{ display:flex; gap:8px; flex-wrap:wrap; }
.small-tag{ font-family:var(--font-mono); font-size:11.5px; padding:4px 10px; border:1px solid var(--line); border-radius:999px; color:var(--slate); }
.divider{ height:1px; background:var(--line); margin:56px 0; }
.center{ text-align:center; }
.mt-top-cta{ margin-top:20px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns:1fr; }
  .feature-grid, .subject-grid, .loc-grid, .review-grid{ grid-template-columns:repeat(2,1fr); }
  .stats-grid{ grid-template-columns:repeat(2,1fr); }
  .stat:nth-child(3){ border-left:none; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  .two-col{ grid-template-columns:1fr; }
  .side-nav{ position:static; flex-direction:row; flex-wrap:wrap; }
  .grid-2{ grid-template-columns:1fr; }
}
@media (max-width: 720px){
  .nav-links{ display:none; }
  .menu-toggle{ display:block; }
  .feature-grid, .subject-grid, .loc-grid, .review-grid{ grid-template-columns:1fr; }
  .stats-grid{ grid-template-columns:repeat(2,1fr); }
  .foot-grid{ grid-template-columns:1fr; gap:28px; }
  .cta-band{ flex-direction:column; align-items:flex-start; }
  .tl-item{ grid-template-columns:44px 1px 1fr; gap:14px; }
  table{ min-width:560px; }
}

/* ---------- Mobile nav panel ---------- */
.mobile-nav{
  display:none; position:fixed; inset:0; z-index:200; background:var(--ink);
  color:var(--white); padding:24px; flex-direction:column;
}
.mobile-nav.open{ display:flex; }
.mobile-nav .close-row{ display:flex; justify-content:flex-end; }
.mobile-nav .close-row button{ background:none; border:none; color:var(--white); font-size:28px; }
.mobile-nav a{ font-size:22px; font-weight:700; padding:16px 0; border-bottom:1px solid var(--line-dark); }
.mobile-nav .cta-row{ margin-top:24px; }