:root{--bg:#F4F3F0;--card:#FFF;--line:#E6E3DC;--line-2:#D5D1C7;--ink:#1B1B19;--sub:#5E5B55;--mute:#77736B;--go:#1B1B19;--go-bg:#EDEBE6;--help:#E4572E;--help-ink:#B53A17;--help-bg:#FDEEE8;--r:10px;--f:"Pretendard Variable","Pretendard",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo",system-ui,sans-serif;--space:24px}
*{box-sizing:border-box}html{scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f);font-size:17px;line-height:1.75;word-break:keep-all;overflow-wrap:anywhere}a{color:inherit;text-underline-offset:4px}a:hover{color:var(--go)}a:focus-visible{outline:3px solid var(--go);outline-offset:4px}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35;letter-spacing:-.035em}h1{font-size:clamp(32px,4vw,54px)}h2{font-size:28px}h3{font-size:20px}p+p{margin-top:12px}ul,ol{padding-left:24px}li+li{margin-top:8px}.wrap{width:min(1120px,calc(100% - 48px));margin-inline:auto}.skip-link{position:absolute;top:-100px;left:24px;background:var(--card);padding:12px;z-index:10}.skip-link:focus{top:12px}.site-header{background:var(--card);border-bottom:1px solid var(--line)}.site-header nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:20px;flex-wrap:wrap}.brand{font-size:22px;font-weight:800;text-decoration:none;letter-spacing:-.04em}.nav-links{display:flex;align-items:center;gap:24px;flex-wrap:wrap;font-size:15px}.nav-links a{padding-block:8px}.button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:12px 22px;border:1px solid var(--go);border-radius:var(--r);background:var(--go);color:var(--card);font-size:17px;font-weight:700;text-decoration:none;line-height:1.5}.button:hover{background:#000;border-color:#000;color:var(--card)}.button.secondary{background:var(--card);color:var(--ink);border-color:var(--line)}.eyebrow{font-size:15px;font-weight:700;color:var(--go);margin-bottom:16px}.hero{padding-block:88px 64px;max-width:850px}.hero h1{max-width:760px}.lead{font-size:20px;color:var(--sub);margin-top:24px;max-width:740px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.section{padding-block:48px;border-top:1px solid var(--line)}.section-intro{color:var(--sub);margin-top:12px;max-width:740px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:28px}.grid>li{margin:0}.card{padding:28px;background:var(--card);border:1px solid var(--line);border-radius:var(--r)}.card p{color:var(--sub);margin-top:12px}.step-number{display:block;color:var(--go);font-weight:700;margin-bottom:14px}.plans{grid-template-columns:repeat(2,minmax(0,1fr))}.plan-type{color:var(--mute);font-size:15px;margin-bottom:8px}.plan-limits{margin:24px 0}.price-note{font-weight:700}.note{padding:20px 24px;border-left:3px solid var(--go);background:var(--go-bg);margin-top:24px}.site-footer{border-top:1px solid var(--line);margin-top:40px;color:var(--sub);font-size:14px}.site-footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:28px}.site-footer nav{display:flex;gap:20px;flex-wrap:wrap}.site-footer .footer-biz{flex-basis:100%;margin:0;font-size:12.5px;line-height:1.7;color:var(--mute)}.footer-biz span{display:inline-block}.footer-biz span+span::before{content:"·";margin:0 7px}.footer-biz a{color:inherit}.document{padding-top:56px}.document>header{max-width:800px;margin-bottom:40px}.document>header p{margin-top:16px;color:var(--sub)}.doc-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;font-size:15px}.toc h2{font-size:18px}.toc ol,.toc ul{margin-bottom:0}.toc a{display:inline-block;padding-block:4px}.prose{max-width:780px;min-width:0}.prose section{padding-bottom:32px;margin-bottom:32px;border-bottom:1px solid var(--line);scroll-margin-top:24px}.prose h2{font-size:25px;margin-bottom:18px}.prose h3{margin:24px 0 10px}.prose p,.prose li{color:var(--sub)}.prose strong{color:var(--ink)}.prose code{font-size:.92em;background:var(--card);padding:2px 5px;border:1px solid var(--line);border-radius:4px}.legal{max-width:800px}.draft{display:inline-block;color:var(--sub);border:1px solid var(--line);background:var(--card);padding:3px 12px;border-radius:var(--r);font-size:14px;margin-bottom:16px}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.site-header nav{padding-block:14px}.nav-links{gap:16px}.hero{padding-block:48px 40px}.lead{font-size:18px}.section{padding-block:32px}.grid,.plans,.doc-layout{grid-template-columns:1fr}.grid{gap:14px}.card{padding:24px}.doc-layout{gap:32px}.document{padding-top:32px}.document>header{margin-bottom:28px}h2{font-size:25px}.actions .button{width:100%}.site-footer .wrap{display:block}.site-footer nav{margin-top:12px;gap:16px}.site-footer .footer-biz{margin-top:16px}}
@media print{@page{margin:16mm}body{background:#fff;color:#000;font-size:11pt;line-height:1.6}.wrap{width:100%;max-width:none}.site-header,.site-footer,.skip-link,.actions,.toc{display:none}.hero,.document,.section{padding-block:12pt}.hero h1,h1{font-size:26pt}h2,.prose h2{font-size:18pt}h3{font-size:13pt}.lead{font-size:12pt}.doc-layout,.grid{display:block}.prose,.legal{max-width:none}.card{margin-block:12pt;padding:14pt;break-inside:avoid}.note{background:none;border:1px solid #777}.prose section{margin-bottom:16pt;padding-bottom:16pt}h1,h2,h3{break-after:avoid}p,li{orphans:3;widows:3}a{color:inherit}.draft{border-color:#777}}

/* 로고 B 가로 조합 — design/brand */
.brand img{display:block;height:24px;width:auto}
@media(max-width:760px){.brand img{height:20px}}

/* Classtica 랜딩 (2026-09 리디자인) — 먹·종이·주황. 주황은 도움 요청 전용, 초록 없음. 타이포·간격은 앱 화면과 같은 Pretendard·10px 모서리 */
.nav-links .nav-cta{padding:8px 16px;border:1px solid var(--ink);border-radius:var(--r);color:var(--ink);font-weight:700}
.nav-links .nav-cta:hover{background:var(--ink);color:var(--card)}
.eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--sub)}
.lead{font-size:20px;margin-top:24px;max-width:none}
.section{padding-block:88px}
.section .grid{margin-top:32px}
.cta-band{padding-block:72px;background:var(--ink);color:var(--card);text-align:center}
.cta-band h2{color:var(--card);font-size:32px}
.cta-band p{margin-top:12px;font-size:18px;color:rgba(255,255,255,.78)}
.cta-band .button.light{margin-top:28px;background:var(--card);border-color:var(--card);color:var(--ink)}
.cta-band .button.light:hover{background:var(--bg);border-color:var(--bg);color:var(--ink)}
.site-footer{margin-top:0}
.landing .site-header{position:absolute;top:0;left:0;right:0;z-index:5;background:transparent;border-bottom:0}
.landing .site-header nav{padding-block:22px}

/* 히어로 — 제품 화면 합성(scripts/landing-hero.mjs). 1440에서 첫 화면 안에 들어간다 */
.lp-hero{padding-block:104px 40px;min-height:min(100vh,900px);display:flex;align-items:center;overflow:hidden}
.lp-hero-grid{display:grid;grid-template-columns:minmax(0,4.2fr) minmax(0,7.8fr);gap:40px;align-items:center}
.lp-hero h1{font-size:clamp(34px,4vw,54px)}
.lp-hero .lead{font-size:19px}
.lp-hero-shot{margin:0 -40px 0 0;min-width:0}
.lp-hero-shot img{display:block;width:100%;height:auto;max-height:calc(100vh - 150px);object-fit:contain;object-position:left center}
.hero-note{margin-top:16px;color:var(--sub);font-size:15px}

/* 한 강의실, 세 화면 */
.lp-head{max-width:760px}
.lp-legend{list-style:none;padding:0;margin:24px 0 0;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:15px;color:var(--sub)}
.lp-legend li{margin:0;display:inline-flex;align-items:center;gap:8px}
.lp-legend b{color:var(--ink)}
.lp-legend i{width:16px;height:16px;border-radius:4px;display:inline-block}
.lp-legend .k-help{background:var(--help)}.lp-legend .k-done{background:var(--ink)}
.lp-legend .k-work{background:var(--card);box-shadow:inset 0 0 0 1px var(--line-2)}.lp-legend .k-empty{outline:1px dashed var(--line-2);outline-offset:-1px}
.lp-three-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-rows:auto auto;gap:28px 32px;margin-top:40px}
.lp-shot{margin:0;min-width:0}
.lp-shot img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--card);box-shadow:0 16px 40px rgba(27,27,25,.08)}
.lp-shot figcaption{margin-top:14px;font-size:15px;color:var(--sub);line-height:1.65}
.lp-shot figcaption strong{display:block;color:var(--ink);font-size:17px;margin-bottom:2px}
.lp-three .lp-floor{grid-column:1/-1}
.lp-three .lp-screen img{border:6px solid #2A2A27;background:#161614}
.lp-three .lp-phone{display:grid;grid-template-columns:minmax(0,200px) minmax(0,1fr);gap:24px;align-items:end}
.lp-three .lp-phone img,.lp-shot-phone img,.lp-cert-phone{border:6px solid var(--ink)!important;border-radius:26px!important}
.lp-three .lp-phone figcaption{margin:0}
.screen-note{margin-top:20px;font-size:13px;color:var(--mute)}

/* 준비 → 진행 → 마무리 */
.lp-stages{list-style:none;padding:0;margin:40px 0 0;counter-reset:none}
.lp-stage{margin:0;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center;padding-block:56px;border-top:1px solid var(--line)}
.lp-stage+.lp-stage{margin-top:0}
.lp-num{font-size:15px;font-weight:700;color:var(--sub);margin-bottom:14px;letter-spacing:.02em}
.lp-stage h3{font-size:clamp(24px,2.4vw,30px);line-height:1.4}
.lp-stage h3+p{color:var(--sub);margin-top:16px}
.benefit-list{list-style:none;padding:0;margin:22px 0 0;color:var(--sub);font-size:15px}
.benefit-list li{padding-left:16px;position:relative}
.benefit-list li::before{content:"";position:absolute;left:0;top:.75em;width:5px;height:5px;background:var(--ink)}
.lp-shot-phone{justify-self:center;width:min(100%,300px)}
.lp-cert{position:relative;padding:0 60px 40px 0}
.lp-cert .lp-cert-paper{border-color:var(--line-2)}
.lp-cert .lp-cert-phone{position:absolute;right:0;bottom:0;width:30%;box-shadow:0 20px 40px rgba(27,27,25,.22)}

/* 설명서(_guide) 안 화면 캡처 */
.product-shot{margin:0;min-width:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.product-shot img{display:block;width:100%;height:auto}
.product-shot figcaption{padding:14px 20px;border-top:1px solid var(--line);font-size:13px;color:var(--sub)}

@media(max-width:900px){
  .section{padding-block:56px}.cta-band{padding-block:56px}.cta-band h2{font-size:26px}
  .landing .site-header nav{padding-block:14px}
  .lp-hero{padding-block:96px 24px;min-height:0;display:block}
  .lp-hero-grid{grid-template-columns:1fr;gap:28px}
  .lp-hero .lead br{display:none}
  .lp-hero-shot{margin:0}
  .lp-hero-shot img{max-height:none}
  .lp-three-grid{grid-template-columns:1fr;gap:32px}
  .lp-three .lp-phone{grid-template-columns:minmax(0,150px) minmax(0,1fr);gap:16px}
  .lp-stage{grid-template-columns:1fr;gap:28px;padding-block:40px}
  .lp-cert{padding:0 36px 36px 0}.lp-cert .lp-cert-phone{width:34%}
}
@media print{.lp-stage{display:block;break-inside:avoid;padding-block:20px}.lp-shot{margin-top:20px}}

/* 이용권 가격 */
.plans{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;align-items:stretch;margin-top:32px}
.plans .card{display:flex;flex-direction:column;padding:40px}
.plans .card h3{font-size:28px}
.plans .plan-type{font-size:16px}
.plans .plan-limits{font-size:17px;margin:28px 0;flex:1}
.plans .plan-limits li+li{margin-top:10px}
.plan-main{border-color:var(--go);box-shadow:0 10px 30px rgba(27,27,25,.07)}
.price{margin-top:12px;font-size:34px;letter-spacing:-.03em;color:var(--ink);line-height:1.25}
.price strong{font-weight:800}
.price-vat{font-size:15px;font-weight:400;color:var(--mute);margin-left:8px;white-space:nowrap}
.price-sub{margin-top:10px;font-size:15px;color:var(--mute)}
.price-note{font-weight:700;margin-top:4px}
.billing-toggle{display:inline-flex;gap:4px;padding:4px;margin:20px 0 4px;border:1px solid var(--line);border-radius:999px;background:var(--bg)}
.billing-toggle button{appearance:none;border:0;background:none;font:inherit;font-size:15px;font-weight:700;color:var(--sub);padding:9px 20px;border-radius:999px;cursor:pointer;display:inline-flex;align-items:center;gap:8px}
.billing-toggle button[aria-pressed="true"]{background:var(--go);color:var(--card)}
.billing-toggle button:focus-visible{outline:2px solid var(--go);outline-offset:2px}
.save-badge{font-size:13px;font-weight:700;padding:2px 8px;border-radius:999px;background:var(--go-bg);color:var(--go)}
.billing-toggle button[aria-pressed="true"] .save-badge{background:rgba(255,255,255,.22);color:var(--card)}
/* 이용권 모바일 — 위의 .plans 2열이 앞쪽 760px 규칙을 덮어써 390에서 금액이 세로로 찢어졌다(E2E 2026-10-01). 금액·토글은 줄바꿈 금지 */
.price strong,.billing-toggle button{white-space:nowrap}
@media(max-width:760px){
  .plans{grid-template-columns:minmax(0,1fr);gap:16px;margin-top:24px}
  .plans .card{padding:24px 20px}
  .plans .card h3{font-size:24px}
  .plans .plan-limits{font-size:16px;margin:20px 0}
  .price{font-size:28px}
  .billing-toggle{display:flex;width:100%;margin-top:16px}
  .billing-toggle button{flex:1 1 0;justify-content:center;padding:9px 12px;font-size:14px}
}


/* 사전예약 폼 (2026-09-18) */
.hero-note{margin-top:16px;color:var(--sub);font-size:15px}
.preorder{background:var(--go-bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.preorder-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start}
.preorder-copy .benefit-list{margin-top:20px}
.preorder-form{padding:32px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 20px}
.field label{display:block;font-size:15px;font-weight:700;margin-bottom:6px}
.field .req{color:var(--go)}
.field input,.field select,.field textarea{width:100%;min-height:46px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r);background:var(--card);color:var(--ink);font:inherit;font-size:16px}
.field input:focus-visible,.field select:focus-visible,.field textarea:focus-visible{outline:2px solid var(--go);outline-offset:1px;border-color:var(--go)}
.field textarea{resize:vertical;line-height:1.6}
.form-grid .field-wide{grid-column:1/-1}
.consent{display:flex;gap:10px;align-items:flex-start;margin-top:22px;font-size:14px;line-height:1.6;color:var(--sub)}
.consent input{margin-top:4px;flex:none;width:18px;height:18px;accent-color:var(--go)}
.preorder-form .cf-turnstile{margin-top:18px}
.form-actions{margin-top:22px;display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.form-actions .button{min-width:200px}
.form-actions .button:disabled{opacity:.6;cursor:wait}
.form-status{font-size:15px;min-height:1.5em}
.form-status[data-state="ok"]{color:var(--go);font-weight:700}
.form-status[data-state="err"]{color:var(--help-ink);font-weight:700}
@media(max-width:900px){.preorder-grid{grid-template-columns:1fr;gap:28px}.form-grid{grid-template-columns:1fr}.preorder-form{padding:24px}.form-actions .button{width:100%}}

/* 설명서 안 화면 캡처 */
.guide-shot{margin:16px 0 24px}
.guide-shot.guide-phone{width:min(100%,320px);border-radius:24px}
.guide-shot+.guide-shot{margin-top:0}