:root{
  --navy:#071834;
  --navy-2:#0b2348;
  --blue:#1658f4;
  --blue-2:#5b82ff;
  --red:#ef1635;
  --ink:#101828;
  --muted:#657085;
  --line:#e7ebf2;
  --surface:#f7f9fc;
  --white:#fff;
  --shadow:0 24px 70px rgba(7,24,52,.12);
  --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  font-family:Inter,"Noto Sans KR",system-ui,sans-serif;
  background:#fff;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.site-shell{overflow:hidden}
.nav-wrap{
  position:fixed;z-index:50;top:0;left:0;right:0;
  padding:16px 0;
  transition:.3s ease;
}
.nav-wrap.scrolled{
  padding:9px 0;
  background:rgba(255,255,255,.88);
  border-bottom:1px solid rgba(231,235,242,.8);
  backdrop-filter:blur(20px);
}
.nav{
  min-height:64px;padding:0 16px;border-radius:20px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-wrap:not(.scrolled) .nav{
  background:rgba(255,255,255,.8);
  box-shadow:0 12px 36px rgba(7,24,52,.08);
  backdrop-filter:blur(18px);
}
.brand{display:flex;align-items:center;gap:11px}
.brand img{width:42px;height:42px;object-fit:contain}
.brand div{display:flex;flex-direction:column;gap:2px}
.brand strong{font-size:15px;letter-spacing:-.02em}
.brand span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.11em}
.nav-links{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:600}
.nav-actions{display:flex;align-items:center;gap:8px}
.site-theme-toggle{
  width:42px;height:42px;border-radius:13px;border:1px solid var(--line);
  background:rgba(255,255,255,.86);color:var(--ink);display:grid;place-items:center;
  cursor:pointer;font-size:18px;box-shadow:0 9px 24px rgba(7,24,52,.08);
  transition:.22s ease;
}
.site-theme-toggle:hover{transform:translateY(-2px)}
.nav-links>a:not(.btn){color:#344054;transition:.2s}
.nav-links>a:not(.btn):hover{color:var(--blue)}
.menu-btn{display:none;background:none;border:0;padding:10px}
.menu-btn span{display:block;width:23px;height:2px;background:var(--navy);margin:5px 0;border-radius:2px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 20px;border-radius:14px;font-weight:700;font-size:14px;
  border:1px solid transparent;transition:.25s ease;cursor:pointer;
}
.btn:hover{transform:translateY(-2px)}
.btn-small{padding:10px 15px;border-radius:11px;background:var(--navy);color:#fff!important}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--blue),#2545c8);
  box-shadow:0 14px 28px rgba(22,88,244,.22);
}
.btn-ghost{border-color:#dbe2ee;background:#fff}
.btn-white{background:#fff;color:var(--navy)}
.btn-outline-white{border-color:rgba(255,255,255,.38);color:#fff;background:rgba(255,255,255,.06)}
.hero{
  position:relative;
  padding:165px 0 95px;
  background:
    radial-gradient(circle at 85% 22%,rgba(22,88,244,.08),transparent 26%),
    linear-gradient(180deg,#f9fbff 0%,#fff 100%);
}
.hero:after{
  content:"";position:absolute;bottom:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,#e9edf5,transparent);
}
.hero-orb{position:absolute;border-radius:50%;filter:blur(1px);pointer-events:none}
.orb-one{width:340px;height:340px;background:rgba(81,121,255,.06);right:-130px;top:140px}
.orb-two{width:180px;height:180px;background:rgba(239,22,53,.04);left:-80px;bottom:50px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 12px;border:1px solid #e3e9f4;border-radius:999px;
  color:#40506a;font-size:12px;font-weight:700;background:#fff;
}
.dot{width:8px;height:8px;border-radius:50%;background:#20b26b;box-shadow:0 0 0 5px rgba(32,178,107,.1)}
.hero h1{
  margin:24px 0 22px;max-width:690px;
  font-size:clamp(46px,5.2vw,76px);line-height:.98;letter-spacing:-.055em;
}
.hero h1 span{display:block;color:var(--blue);margin-top:8px}
.hero-lead{
  max-width:650px;margin:0;
  color:#556176;font-size:18px;line-height:1.9;
}
.hero-actions{display:flex;gap:12px;margin-top:32px}
.trust-row{
  margin-top:46px;padding-top:24px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(3,1fr);max-width:650px;
}
.trust-row div{display:flex;flex-direction:column;gap:4px}
.trust-row strong{font-size:13px}
.trust-row span{font-size:11px;color:#7a8495}
.hero-visual{position:relative;min-height:525px;display:flex;align-items:center;justify-content:center}
.korean-card{
  width:min(450px,100%);min-height:470px;padding:28px;
  color:#fff;border-radius:34px;position:relative;overflow:hidden;
  background:
    radial-gradient(circle at 80% 10%,rgba(98,132,255,.55),transparent 34%),
    linear-gradient(150deg,#071834 0%,#0c2e68 65%,#153ea9 100%);
  box-shadow:0 35px 80px rgba(7,24,52,.28);
}
.korean-card:after{
  content:"ㄱ";position:absolute;right:-25px;bottom:-80px;
  font-family:"Noto Sans KR";font-weight:900;font-size:250px;
  color:rgba(255,255,255,.035);
}
.card-top{display:flex;justify-content:space-between;align-items:center;font-family:"Noto Sans KR";font-weight:700}
.status-pill{font-family:Inter;font-size:9px;letter-spacing:.16em;padding:7px 10px;border:1px solid rgba(255,255,255,.18);border-radius:999px;background:rgba(255,255,255,.08)}
.korean-main{
  margin:36px 0 34px;font-family:"Noto Sans KR";font-size:102px;line-height:1;font-weight:900;
  letter-spacing:-.08em;
}
.lesson-card{
  position:relative;z-index:2;display:flex;align-items:center;gap:13px;
  padding:16px;border-radius:18px;background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(12px)
}
.lesson-icon{
  width:48px;height:48px;border-radius:14px;background:#fff;color:var(--blue);
  display:grid;place-items:center;font-family:"Noto Sans KR";font-weight:900;font-size:23px
}
.lesson-card div:last-child{display:flex;flex-direction:column;gap:4px}
.lesson-card small{font-size:10px;color:#c7d3eb}
.lesson-card strong{font-size:12px}
.progress-wrap{position:relative;z-index:2;margin-top:28px}
.progress-head,.progress-labels{display:flex;justify-content:space-between}
.progress-head{font-size:10px;color:#c7d3eb}.progress-head strong{color:#fff}
.progress-track{height:7px;margin:12px 0 8px;background:rgba(255,255,255,.12);border-radius:20px;overflow:hidden}
.progress-bar{width:72%;height:100%;border-radius:inherit;background:linear-gradient(90deg,#fff,#89a5ff)}
.progress-labels{font-family:"Noto Sans KR";font-size:10px;color:#aebdd8}
.floating-note{
  position:absolute;z-index:3;display:flex;align-items:center;gap:10px;
  padding:13px 15px;border-radius:15px;background:rgba(255,255,255,.94);
  box-shadow:0 18px 45px rgba(7,24,52,.16);backdrop-filter:blur(12px)
}
.floating-note>span{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:#eaf0ff;color:var(--blue);font-weight:800}
.floating-note div{display:flex;flex-direction:column;gap:2px}
.floating-note strong{font-size:11px}.floating-note small{font-size:9px;color:#7d8798}
.note-one{left:-5px;top:95px}
.note-two{right:-5px;bottom:72px}
.section{padding:105px 0}
.section-heading{display:flex;justify-content:space-between;gap:60px;align-items:end;margin-bottom:42px}
.section-heading>div{max-width:680px}
.section-heading>p{max-width:420px;color:var(--muted);line-height:1.8;font-size:14px;margin:0}
.section-kicker{display:block;margin-bottom:12px;font-size:10px;letter-spacing:.18em;font-weight:800;color:var(--blue)}
.section-kicker.light{color:#a9bfff}
h2{margin:0;font-size:clamp(34px,4vw,52px);line-height:1.06;letter-spacing:-.045em}
.course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.course-card{
  min-height:355px;padding:24px;border:1px solid var(--line);border-radius:24px;
  background:#fff;transition:.28s ease;display:flex;flex-direction:column;
}
.course-card:hover{transform:translateY(-7px);box-shadow:var(--shadow);border-color:#dce3ef}
.course-card.featured{background:linear-gradient(160deg,#071834,#0c316f);color:#fff;border-color:transparent}
.course-top{display:flex;justify-content:space-between;align-items:center}
.course-code{font-size:11px;color:#8d97a9;font-weight:700}.featured .course-code{color:#92a8ce}
.tag{font-size:8px;letter-spacing:.13em;font-weight:800;padding:6px 8px;border-radius:999px;background:#f0f3f8;color:#637083}
.tag.live{background:rgba(255,255,255,.11);color:#fff}
.course-symbol{margin:35px 0 19px;font-family:"Noto Sans KR";font-size:42px;font-weight:900;color:#c7d4f5}
.course-card:not(.featured) .course-symbol{color:#173e9d}
.course-card h3{font-size:22px;margin:0 0 13px;letter-spacing:-.03em}
.course-card p{font-size:13px;line-height:1.75;color:#697487;margin:0 0 24px}
.featured p{color:#b9c8e3}
.text-link{margin-top:auto;font-size:11px;font-weight:800;color:var(--blue)}
.featured .text-link{color:#fff}
.experience-section{background:var(--navy);color:#fff}
.experience-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.experience-copy>p{color:#b9c7de;line-height:1.9;max-width:570px;margin:22px 0 0}
.steps{margin-top:40px;display:grid;gap:12px}
.step{display:grid;grid-template-columns:44px 1fr;gap:15px;padding:15px;border:1px solid rgba(255,255,255,.09);border-radius:16px;background:rgba(255,255,255,.035)}
.step>span{width:37px;height:37px;border-radius:12px;display:grid;place-items:center;background:#163a77;color:#adc3f3;font-size:10px;font-weight:800}
.step div{display:flex;flex-direction:column;gap:5px}.step strong{font-size:13px}.step p{margin:0;font-size:11px;color:#9db0cf}
.portal-preview{display:flex;justify-content:center}
.portal-window{width:min(440px,100%);border-radius:28px;background:#f7f9fd;box-shadow:0 35px 80px rgba(0,0,0,.22);overflow:hidden;color:var(--ink)}
.window-top{height:46px;padding:0 16px;display:flex;align-items:center;gap:7px;border-bottom:1px solid #e7ebf1;background:#fff}
.window-top span{width:7px;height:7px;border-radius:50%;background:#d7dce5}
.window-top span:first-child{background:#ff6574}.window-top span:nth-child(2){background:#ffc95b}.window-top span:nth-child(3){background:#5dd188}
.window-top small{margin-left:auto;font-size:8px;letter-spacing:.15em;font-weight:800;color:#8a95a7}
.window-body{padding:28px}
.window-body>img{width:52px;height:52px;margin-bottom:10px}
.portal-label{font-size:9px;letter-spacing:.14em;font-weight:800;color:var(--blue)}
.window-body h3{margin:7px 0 24px;font-size:26px;letter-spacing:-.04em}
.portal-option{display:grid;grid-template-columns:36px 1fr 20px;align-items:center;padding:13px 0;border-bottom:1px solid #e6eaf1}
.portal-option span{font-size:9px;color:#9aa3b2}.portal-option strong{font-size:12px}.portal-option em{font-style:normal;color:var(--blue)}
.window-body .btn{margin-top:24px;width:100%}
.about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:85px;align-items:center}
.about-mark{
  min-height:420px;border-radius:30px;background:linear-gradient(145deg,#f0f4fc,#fff);
  position:relative;overflow:hidden;display:grid;place-items:center;border:1px solid var(--line)
}
.about-mark img{position:relative;z-index:2;width:180px}
.mark-bg{position:absolute;font-family:"Noto Sans KR";font-size:360px;font-weight:900;color:#e8eef9;right:-40px;bottom:-110px}
.about-copy>p{color:var(--muted);line-height:1.9;margin:22px 0 0}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}
.about-points span{font-size:12px;font-weight:700;padding:12px 13px;border:1px solid var(--line);border-radius:12px}
.faq-section{background:#f8fafc}
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:85px}
.faq-title p{color:var(--muted);line-height:1.8}
.accordion{display:grid;gap:10px}
.faq-item{
  width:100%;text-align:left;border:1px solid var(--line);background:#fff;border-radius:16px;padding:18px 20px;
  display:grid;grid-template-columns:1fr auto;align-items:center;cursor:pointer
}
.faq-item span{font-weight:700;font-size:13px}.faq-item i{font-style:normal;font-size:19px;color:var(--blue)}
.faq-answer{grid-column:1/-1;max-height:0;overflow:hidden;opacity:0;color:var(--muted);font-size:12px;line-height:1.75;transition:.25s ease}
.faq-item.open .faq-answer{max-height:140px;opacity:1;padding-top:12px}
.faq-item.open i{transform:rotate(45deg)}
.cta-section{padding:90px 0}
.cta-card{
  border-radius:32px;padding:52px 56px;color:#fff;
  display:flex;justify-content:space-between;align-items:center;gap:30px;
  background:
    radial-gradient(circle at 85% 15%,rgba(84,123,255,.55),transparent 30%),
    linear-gradient(140deg,#071834,#0b3274);
  box-shadow:0 30px 70px rgba(7,24,52,.22)
}
.cta-card h2{margin-bottom:14px}.cta-card p{max-width:650px;color:#bdcae0;line-height:1.8;margin:0}
.cta-actions{display:flex;gap:10px;flex-shrink:0}
footer{padding:32px 0 22px;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.1fr 1fr .7fr;align-items:center;gap:30px}
.footer-brand{display:flex;align-items:center;gap:10px}.footer-brand img{width:44px}
.footer-brand div{display:flex;flex-direction:column;gap:3px}.footer-brand strong{font-size:13px}.footer-brand span{font-size:9px;color:var(--muted)}
.footer-links,.social-links{display:flex;gap:18px;justify-content:center;font-size:10px;font-weight:700;color:#5c6778}
.social-links{justify-content:flex-end}
.footer-bottom{margin-top:25px;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:9px;color:#929baa}

.floating-whatsapp{
  position:fixed;
  right:22px;
  bottom:22px;
  z-index:120;
  display:flex;
  align-items:center;
  gap:10px;
  padding:16px 20px;
  border-radius:999px;
  background:linear-gradient(135deg,#25D366,#1DB954);
  color:#fff;
  font-size:15px;
  font-weight:800;
  box-shadow:0 18px 40px rgba(37,211,102,.32);
  border:1px solid rgba(255,255,255,.18);
}
.floating-whatsapp:hover{
  transform:translateY(-3px) scale(1.01);
  box-shadow:0 22px 46px rgba(37,211,102,.38);
}
.floating-whatsapp .wa-icon{
  width:30px;
  height:30px;
  display:grid;
  place-items:center;
  border-radius:50%;
  background:rgba(255,255,255,.18);
  font-size:16px;
  line-height:1;
}
@media(max-width:640px){
  .floating-whatsapp{
    right:14px;
    bottom:14px;
    padding:14px 17px;
    font-size:14px;
  }
  .floating-whatsapp .wa-icon{
    width:28px;
    height:28px;
    font-size:15px;
  }
}

.toast{
  position:fixed;z-index:100;left:50%;bottom:28px;transform:translate(-50%,24px);
  background:#071834;color:#fff;padding:12px 16px;border-radius:12px;font-size:11px;
  opacity:0;pointer-events:none;transition:.25s;box-shadow:0 15px 35px rgba(7,24,52,.26)
}
.toast.show{opacity:1;transform:translate(-50%,0)}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}.reveal-delay{transition-delay:.12s}
@media(max-width:980px){
  .nav-links{position:absolute;top:76px;left:20px;right:20px;display:none;flex-direction:column;align-items:stretch;gap:6px;background:#fff;border:1px solid var(--line);padding:14px;border-radius:18px;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}.nav-links>a{padding:10px 12px}.menu-btn{display:block}
  .hero-grid,.experience-grid,.about-grid,.faq-grid{grid-template-columns:1fr}
  .hero-grid{gap:35px}.hero-visual{min-height:500px}.course-grid{grid-template-columns:1fr 1fr}
  .section-heading{align-items:start;flex-direction:column;gap:18px}
  .experience-grid,.about-grid,.faq-grid{gap:48px}.about-mark{min-height:320px}
  .cta-card{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr}.footer-links,.social-links{justify-content:flex-start}
}
@media(max-width:640px){
  .container{width:min(100% - 28px,1180px)}
  .nav-wrap{padding:10px 0}.nav{padding:0 10px}.brand span{display:none}
  .hero{padding:125px 0 70px}.hero h1{font-size:45px}.hero-lead{font-size:15px}
  .hero-actions,.cta-actions{flex-direction:column}.hero-actions .btn,.cta-actions .btn{width:100%}
  .trust-row{grid-template-columns:1fr;gap:16px}.trust-row div{padding-bottom:12px;border-bottom:1px solid var(--line)}
  .hero-visual{min-height:450px}.korean-card{min-height:420px;padding:22px}.korean-main{font-size:82px}
  .floating-note{display:none}.course-grid{grid-template-columns:1fr}.course-card{min-height:300px}
  .section{padding:75px 0}.about-points{grid-template-columns:1fr}.cta-card{padding:34px 24px}
  .footer-bottom{flex-direction:column;gap:8px}
}


/* =========================================================
   HANGUL CAMPUS LIGHT / DARK THEME
   ========================================================= */
html{color-scheme:light}
html[data-theme="dark"]{color-scheme:dark}
body,.nav-wrap,.nav,.hero,.course-card,.portal-window,.window-top,.about-mark,
.faq-section,.faq-item,footer,.eyebrow,.floating-note,.btn-ghost,.site-theme-toggle{
  transition:background-color .22s ease,border-color .22s ease,color .22s ease,box-shadow .22s ease;
}
html[data-theme="dark"]{
  --navy:#071834;
  --navy-2:#0b2348;
  --blue:#6f98ff;
  --blue-2:#8eabff;
  --ink:#eef4ff;
  --muted:#9aa9be;
  --line:#26364d;
  --surface:#0b1524;
  --white:#0f1b2d;
  --shadow:0 24px 70px rgba(0,0,0,.36);
}
html[data-theme="dark"] body{background:#08111f;color:var(--ink)}
html[data-theme="dark"] .nav-wrap.scrolled{
  background:rgba(8,17,31,.88);border-bottom-color:rgba(38,54,77,.88)
}
html[data-theme="dark"] .nav-wrap:not(.scrolled) .nav{
  background:rgba(15,27,45,.84);box-shadow:0 12px 36px rgba(0,0,0,.28)
}
html[data-theme="dark"] .brand span{color:#91a1b8}
html[data-theme="dark"] .nav-links>a:not(.btn){color:#c9d5e6}
html[data-theme="dark"] .site-theme-toggle{background:#0f1b2d;color:#f3f7ff;border-color:#2b3b53}
html[data-theme="dark"] .menu-btn span{background:#edf3ff}
html[data-theme="dark"] .hero{
  background:
    radial-gradient(circle at 85% 22%,rgba(67,108,255,.14),transparent 28%),
    radial-gradient(circle at 5% 85%,rgba(239,22,53,.06),transparent 22%),
    linear-gradient(180deg,#091525 0%,#08111f 100%);
}
html[data-theme="dark"] .hero:after{background:linear-gradient(90deg,transparent,#26364d,transparent)}
html[data-theme="dark"] .eyebrow{background:#0f1b2d;border-color:#283951;color:#c5d1e3}
html[data-theme="dark"] .hero-lead{color:#a7b5c8}
html[data-theme="dark"] .trust-row span{color:#8f9eb3}
html[data-theme="dark"] .btn-ghost{background:#0f1b2d;border-color:#2a3a52;color:#dce6f5}
html[data-theme="dark"] .floating-note{background:rgba(15,27,45,.95);box-shadow:0 18px 45px rgba(0,0,0,.28)}
html[data-theme="dark"] .floating-note strong{color:#edf3ff}
html[data-theme="dark"] .floating-note small{color:#91a1b7}
html[data-theme="dark"] .course-card{background:#0f1b2d;border-color:#25364e}
html[data-theme="dark"] .course-card:not(.featured) .course-symbol{color:#83a2ff}
html[data-theme="dark"] .course-card p{color:#9aa9bd}
html[data-theme="dark"] .course-card.featured{background:linear-gradient(160deg,#071834,#123c80)}
html[data-theme="dark"] .tag{background:#17263b;color:#aebbd0}
html[data-theme="dark"] .portal-window{background:#0f1b2d;color:#edf3ff;box-shadow:0 35px 80px rgba(0,0,0,.35)}
html[data-theme="dark"] .window-top{background:#0b1728;border-bottom-color:#26364d}
html[data-theme="dark"] .portal-option{border-bottom-color:#26364d}
html[data-theme="dark"] .about-mark{background:linear-gradient(145deg,#0d1929,#101d30);border-color:#26364d}
html[data-theme="dark"] .mark-bg{color:#17263a}
html[data-theme="dark"] .about-points span{border-color:#26364d;background:#0c1727}
html[data-theme="dark"] .faq-section{background:#0a1422}
html[data-theme="dark"] .faq-item{background:#0f1b2d;border-color:#26364d;color:#eef4ff}
html[data-theme="dark"] .faq-title p,
html[data-theme="dark"] .faq-answer{color:#9aa9bd}
html[data-theme="dark"] footer{background:#08111f;border-top-color:#26364d}
html[data-theme="dark"] .footer-links,
html[data-theme="dark"] .social-links{color:#9aa9bd}
html[data-theme="dark"] .footer-bottom{border-top-color:#26364d;color:#8190a5}
html[data-theme="dark"] .toast{background:#eaf0ff;color:#071834}
@media(max-width:980px){
  html[data-theme="dark"] .nav-links{background:#0f1b2d;border-color:#26364d}
}

.course-payment-options{display:grid;gap:14px;margin:16px 0 30px}.course-payment-option{padding:18px;border:1px solid var(--line,#293c55);border-radius:16px;background:rgba(70,119,226,.06)}.course-payment-option h3{margin:0 0 8px;font-size:18px}.course-payment-option .plan-price{display:block;font-size:24px;color:#80a5ff}.course-payment-option p{font-size:14px;line-height:1.85;margin:10px 0 0}