:root{
  --brand:#E8344E; --brand-dark:#B91D38; --brand-soft:#FCE9EC;
  --ink:#0A0A0A; --ink2:#3A3A3A; --mute:#6B6B6B; --line:#ECECEC;
  --bg:#FFFFFF; --bg2:#FAFAFA; --dark:#121316;
  --radius:20px; --shadow:0 15px 35px rgba(0,0,0,.08); --shadow-lg:0 20px 50px rgba(0,0,0,.10);
  --ease:.3s cubic-bezier(.2,.7,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Pretendard',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-wrap:break-word}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
a{text-decoration:none;color:inherit}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;border-radius:100px;padding:15px 30px;transition:transform var(--ease),box-shadow var(--ease),background var(--ease);cursor:pointer;border:none;font-size:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 24px rgba(232,52,78,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(232,52,78,.45)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1.5px solid rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.24)}
.tag{display:inline-block;color:var(--brand);font-weight:700;font-size:14px;letter-spacing:1px;margin-bottom:12px}
.head h2{font-size:38px;font-weight:800;letter-spacing:-1px;line-height:1.25}
.head p{color:var(--mute);font-size:17px;margin-top:14px}
.center{text-align:center}
.reveal{opacity:0;transform:translateY(36px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}
section.block{padding:96px 0}

/* HEADER */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center}.logo svg{height:40px;width:auto;display:block}
.gnb{display:flex;gap:32px;font-weight:500;font-size:15.5px}
.gnb a{position:relative;padding:6px 0;color:var(--ink2);transition:color var(--ease)}
.gnb a:after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);transition:width var(--ease)}
.gnb a:hover{color:var(--ink)}.gnb a:hover:after{width:100%}
.gnb a.on{color:var(--brand)}.gnb a.on:after{width:100%}
.nav .btn{padding:11px 22px;font-size:15px}
.nav-right{display:flex;align-items:center;gap:8px}
.hamb{display:none;background:none;border:none;cursor:pointer;color:var(--ink);padding:6px;border-radius:8px}
.hamb svg{display:block}
.mnav{display:none;flex-direction:column;border-top:1px solid var(--line)}
.mnav.open{display:flex}
.mnav a{padding:16px 24px;font-weight:600;font-size:16px;color:var(--ink2);border-bottom:1px solid var(--line)}
.mnav a:active{background:var(--bg2)}

/* HERO */
.hero{position:relative;height:600px;overflow:hidden;background:#0A0A0A}
.lhero{height:520px;display:flex;align-items:center}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease;display:flex;align-items:center}
.slide.active{opacity:1;z-index:2}
.slide::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(0,0,0,.8) 0%,rgba(0,0,0,.45) 55%,rgba(0,0,0,.12) 100%);z-index:1}
.slide-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.08);transition:transform 6s ease}
.slide.active .slide-bg{transform:scale(1)}
.s1{background-image:url('https://images.unsplash.com/photo-1543165796-5426273eaab3?w=1600&q=80')}
.s2{background-image:url('https://images.unsplash.com/photo-1526481280693-3bfa7568e0f3?w=1600&q=80')}
.s3{background-image:url('https://images.unsplash.com/photo-1517048676732-d65bc937f952?w=1600&q=80')}
.lh-en{background-image:url('https://images.unsplash.com/photo-1523240795612-9a054b0db644?w=1600&q=80')}
.lh-jp{background-image:url('https://images.unsplash.com/photo-1503899036084-c55cdd92da26?w=1600&q=80')}
.lh-cn{background-image:url('https://images.unsplash.com/photo-1508804185872-d7badad00f7d?w=1600&q=80')}
.hero-inner{position:relative;z-index:3;color:#fff;max-width:1120px;margin:0 auto;padding:0 24px;width:100%}
.eyebrow{display:inline-block;background:var(--brand);color:#fff;font-weight:600;font-size:13.5px;padding:7px 16px;border-radius:100px;opacity:0;transform:translateY(24px)}
.hero h1{font-size:54px;line-height:1.18;font-weight:800;letter-spacing:-1.5px;margin:20px 0 18px;opacity:0;transform:translateY(28px)}
.hero h1 span{color:var(--brand)}
.hero p{font-size:19px;color:rgba(255,255,255,.82);max-width:540px;opacity:0;transform:translateY(28px)}
.hero-cta{display:flex;gap:14px;margin-top:34px;opacity:0;transform:translateY(28px)}
.slide.active .eyebrow{animation:up .7s .2s forwards}
.slide.active h1{animation:up .8s .35s forwards}
.slide.active p{animation:up .8s .5s forwards}
.slide.active .hero-cta{animation:up .8s .65s forwards}
@keyframes up{to{opacity:1;transform:translateY(0)}}
.hero-ctrl{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:5;display:flex;align-items:center;gap:16px}
.dots{display:flex;gap:10px}
.dot{width:32px;height:5px;border-radius:100px;background:rgba(255,255,255,.4);cursor:pointer;transition:background var(--ease)}
.dot.active{background:var(--brand)}
.pp{width:34px;height:34px;border-radius:50%;border:1.5px solid rgba(255,255,255,.5);background:rgba(0,0,0,.25);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:13px;transition:background var(--ease)}
.pp:hover{background:rgba(255,255,255,.2)}

/* INFO CARDS */
.info{margin-top:-70px;position:relative;z-index:10}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.info-card{background:var(--bg);border-radius:var(--radius);padding:30px 28px;box-shadow:var(--shadow-lg);transition:transform var(--ease),box-shadow var(--ease);display:flex;flex-direction:column;gap:10px}
.info-card:hover{transform:translateY(-8px);box-shadow:0 26px 56px rgba(0,0,0,.14)}
.info-card .sub{color:var(--brand);font-weight:700;font-size:14px}
.info-card h3{font-size:21px;font-weight:800;letter-spacing:-.5px}
.info-card .go{margin-top:auto;color:var(--ink2);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px}
.info-card .go i{transition:transform var(--ease)}
.info-card:hover .go i{transform:translateX(5px)}

/* DIAGNOSTIC */
.diag{background:var(--bg2)}
.diag-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:48px}
.concern{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;cursor:pointer;transition:all var(--ease);display:flex;justify-content:space-between;align-items:center;gap:20px}
.concern:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-4px);box-shadow:var(--shadow)}
.concern .q{font-size:18.5px;font-weight:700;letter-spacing:-.3px}
.concern .hash{color:var(--mute);font-size:14px;font-weight:600;margin-top:6px}
.concern:hover .hash{color:var(--brand-dark)}
.concern .arrow{flex:0 0 auto;width:40px;height:40px;border-radius:50%;background:var(--bg2);display:flex;align-items:center;justify-content:center;color:var(--mute);transition:all var(--ease)}
.concern:hover .arrow{background:var(--brand);color:#fff}

/* METHOD */
.method{background:var(--dark);color:#fff}
.method .head h2{color:#fff}.method .head p{color:rgba(255,255,255,.6)}
.m3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px}
.m-col{border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:38px 30px;transition:all var(--ease);background:rgba(255,255,255,.02)}
.m-col:hover{border-color:var(--brand);background:rgba(232,52,78,.08);transform:translateY(-8px)}
.m-cat{display:inline-block;font-size:13px;font-weight:700;color:var(--brand);border:1px solid var(--brand);border-radius:100px;padding:4px 14px;margin-bottom:20px}
.m-col h3{font-size:24px;font-weight:800;letter-spacing:-.5px;margin-bottom:14px}
.m-col .punch{font-size:17px;font-weight:600;color:#fff;margin-bottom:12px}
.m-col .punch em{color:var(--brand);font-style:normal}
.m-col p{font-size:15px;color:rgba(255,255,255,.62);line-height:1.7}

/* WHY (lang pages) */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:52px}
.wc{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;transition:transform var(--ease),box-shadow var(--ease)}
.wc:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.wc .ic{font-size:30px;margin-bottom:14px}
.wc h4{font-size:18px;font-weight:800;margin-bottom:8px}
.wc p{font-size:14px;color:var(--mute);line-height:1.6}

/* TRUST */
.trust{text-align:center}
.trust h2{font-size:36px;font-weight:800;letter-spacing:-1px;line-height:1.3}
.trust h2 b{color:var(--brand)}
.trust .foot{color:var(--mute);font-size:13.5px;margin-top:18px}
.trust-row{display:flex;justify-content:center;gap:48px;margin-top:48px;flex-wrap:wrap}
.trust-row .ti{text-align:center}
.trust-row b{display:block;font-size:40px;font-weight:800;color:var(--ink);letter-spacing:-1px}
.trust-row span{font-size:14.5px;color:var(--mute);font-weight:500}

/* LEVELS */
.levels{background:var(--bg2)}
.lv{display:grid;grid-template-columns:repeat(4,1fr);margin-top:54px;background:var(--bg);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.lv-col{padding:36px 28px;border-right:1px solid var(--line);transition:background var(--ease)}
.lv-col:last-child{border-right:none}.lv-col:hover{background:var(--brand-soft)}
.lv-step{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:1px}
.lv-col h4{font-size:22px;font-weight:800;margin:8px 0 6px}
.lv-col .kw{font-size:14.5px;font-weight:600;color:var(--ink2);margin-bottom:12px}
.lv-col .ds{font-size:14px;color:var(--mute);line-height:1.6}

/* LANGUAGES */
.langs{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.lang{position:relative;border-radius:var(--radius);overflow:hidden;height:300px;display:flex;align-items:flex-end;color:#fff;transition:transform var(--ease)}
.lang:hover{transform:translateY(-8px)}
.lang::before{content:"";position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .6s ease}
.lang:hover::before{transform:scale(1.06)}
.lang::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(0,0,0,.78))}
.le::before{background-image:url('https://images.unsplash.com/photo-1523240795612-9a054b0db644?w=900&q=80')}
.lj::before{background-image:url('https://images.unsplash.com/photo-1503899036084-c55cdd92da26?w=900&q=80')}
.lc::before{background-image:url('https://images.unsplash.com/photo-1508804185872-d7badad00f7d?w=900&q=80')}
.lang .li{position:relative;z-index:2;padding:28px}
.lang .li b{font-size:13px;font-weight:700;letter-spacing:1.5px;opacity:.85}
.lang .li h4{font-size:26px;font-weight:800;margin:6px 0 8px}
.lang .li p{font-size:14.5px;color:rgba(255,255,255,.82)}

/* TEACHERS (lang pages) */
.tch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.tch{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform var(--ease),box-shadow var(--ease)}
.tch:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.tch .ava{height:150px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center}
.tch .ava span{width:84px;height:84px;border-radius:50%;background:#fff;color:var(--brand);font-size:34px;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow)}
.tch .body{padding:22px 22px 24px}
.tch h4{font-size:18px;font-weight:800}
.tch .loc{font-size:13px;color:var(--brand);font-weight:700;margin:5px 0 10px}
.tch .desc{font-size:13.5px;color:var(--mute);line-height:1.6}
.tch .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.tch .tags span{font-size:12px;font-weight:600;color:var(--ink2);background:var(--bg2);border:1px solid var(--line);border-radius:100px;padding:4px 10px}

/* CHIPS */
.chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:46px;justify-content:center}
.chip{padding:13px 24px;border:1.5px solid var(--line);border-radius:100px;font-weight:600;font-size:15px;color:var(--ink2);transition:all var(--ease);cursor:pointer}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}

/* REVIEWS */
.rv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.rv{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:transform var(--ease),box-shadow var(--ease)}
.rv:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.rv .lg{display:inline-block;font-size:12.5px;font-weight:700;color:var(--brand);background:var(--brand-soft);padding:4px 12px;border-radius:100px;margin-bottom:14px}
.rv .qt{font-size:15.5px;color:var(--ink2);line-height:1.72}
.rv .au{margin-top:16px;font-weight:700;font-size:14px;color:var(--ink);border-top:1px solid var(--line);padding-top:14px}
section[id]{scroll-margin-top:88px}

/* FAQ (lang pages) */
.faq{max-width:760px;margin:48px auto 0}
.fq{border-bottom:1px solid var(--line)}
.fq button{width:100%;text-align:left;background:none;border:none;cursor:pointer;padding:22px 6px;font-size:17px;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:inherit}
.fq .pl{flex:0 0 auto;color:var(--brand);font-size:24px;font-weight:700;transition:transform var(--ease)}
.fq.open .pl{transform:rotate(45deg)}
.fq .ans{max-height:0;overflow:hidden;color:var(--mute);font-size:15.5px;line-height:1.7;padding:0 6px;transition:max-height var(--ease),padding var(--ease)}
.fq.open .ans{max-height:260px;padding:0 6px 22px}

/* CTA */
.cta{background:var(--ink);color:#fff;text-align:center;padding:90px 24px;border-radius:var(--radius);margin:0 24px}
.cta h2{font-size:40px;font-weight:800;letter-spacing:-1px}
.cta p{color:rgba(255,255,255,.7);font-size:18px;margin:16px 0 34px}
footer{padding:40px 24px 100px;border-top:1px solid var(--line);color:var(--mute);font-size:14px;text-align:center}
.crumb{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--mute);margin-bottom:16px}
.crumb a{color:var(--mute);transition:color var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{opacity:.45}
.crumb .cur{color:var(--ink2);font-weight:600}

/* FAB */
.fab{position:fixed;right:18px;bottom:20px;z-index:80;display:flex;flex-direction:column;gap:12px}
.fab a{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(0,0,0,.2);transition:transform var(--ease)}
.fab a:hover{transform:translateY(-3px)}
.fab .kakao{background:#FEE500}
.fab .tel{background:var(--brand)}
.fab svg{display:block}
.fab .lbl{position:absolute;right:64px;white-space:nowrap;background:#222;color:#fff;font-size:13px;font-weight:600;padding:7px 12px;border-radius:8px;opacity:0;pointer-events:none;transition:opacity var(--ease)}
.fab a:hover .lbl{opacity:1}

/* MODAL */
.modal-bg{display:none;position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.55);align-items:center;justify-content:center;padding:20px}
.modal-bg.open{display:flex}
.modal{background:var(--bg);border-radius:var(--radius);width:100%;max-width:520px;max-height:90vh;overflow-y:auto;padding:36px 32px 28px;position:relative;animation:modalUp .35s ease}
@keyframes modalUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.modal .close{position:absolute;top:16px;right:18px;background:none;border:none;cursor:pointer;font-size:26px;color:var(--mute);line-height:1}
.modal .close:hover{color:var(--ink)}
.modal h3{font-size:24px;font-weight:800;margin-bottom:24px}
.modal .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.modal label{display:block;font-size:14px;font-weight:700;color:var(--ink);margin-bottom:6px}
.modal label .req{color:var(--brand)}
.modal .field{margin-bottom:18px}
.modal input,.modal select,.modal textarea{width:100%;padding:13px 14px;border:1.5px solid var(--line);border-radius:12px;font-size:15px;font-family:inherit;background:var(--bg2);transition:border-color var(--ease);outline:none}
.modal input:focus,.modal select:focus,.modal textarea:focus{border-color:var(--brand);background:var(--bg)}
.modal textarea{resize:vertical;min-height:90px}
.modal .submit{width:100%;padding:17px;border:none;border-radius:100px;background:var(--brand);color:#fff;font-size:17px;font-weight:700;cursor:pointer;margin-top:8px;box-shadow:0 8px 24px rgba(232,52,78,.35);transition:transform var(--ease),box-shadow var(--ease),background var(--ease)}
.modal .submit:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(232,52,78,.45)}
.modal .err{font-size:12.5px;color:var(--brand);margin-top:5px;display:none}
.modal .err.show{display:block}
.modal .addr-row{display:flex;gap:10px;margin-bottom:10px}
.modal .addr-row input{flex:1}
.modal .addr-btn{flex:0 0 auto;padding:13px 18px;border:1.5px solid var(--brand);border-radius:12px;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:14px;cursor:pointer;transition:background var(--ease)}
.modal .addr-btn:hover{background:var(--brand);color:#fff}
.modal .alt{text-align:center;margin-top:16px;font-size:14px;color:var(--mute)}
.modal .alt a{color:var(--brand);font-weight:600}
.modal .ok{text-align:center;padding:40px 0}
.modal .ok h4{font-size:22px;font-weight:800;margin:16px 0 10px}
.modal .ok p{color:var(--mute);font-size:15px}

@media(max-width:880px){
  .gnb{display:none}.hamb{display:block}.nav .btn{padding:10px 16px;font-size:14px}
  .hero{height:560px}.lhero{height:480px}.hero h1{font-size:36px}
  .info{margin-top:1.25rem}.info-grid,.m3,.langs,.rv-grid,.why-grid,.tch-grid{grid-template-columns:1fr}
  .diag-grid,.lv{grid-template-columns:1fr}.head h2,.cta h2,.trust h2{font-size:28px}
  .lv-col{border-right:none;border-bottom:1px solid var(--line)}
}