:root{--sky:#68c8f3;--green:#45b987;--ink:#203f51;--muted:#526976;--line:#dce7ec;--pale:#eff9fe;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:var(--ink);background:var(--white);font-family:Arial,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;font-size:16px;line-height:1.7;overflow-wrap:break-word}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button{color:inherit}button,a{touch-action:manipulation}button{min-height:44px}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #1773a0;outline-offset:4px}h1,h2,h3,h4,p{margin:0}h1,h2,h3,h4{line-height:1.35;letter-spacing:-.045em;word-break:keep-all}h2{font-size:28px}h3{font-size:23px}h4{font-size:19px}p{word-break:keep-all}button[hidden],[hidden]{display:none!important}.container{width:min(1120px,calc(100% - 40px));margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.skip-link{position:fixed;top:-100px;left:12px;background:white;padding:12px;z-index:20}.skip-link:focus{top:12px}.site-header{border-bottom:1px solid var(--line);background:rgba(255,255,255,.97);position:relative;z-index:5}.header-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;min-height:80px;gap:12px}.brand{display:inline-flex;align-items:center;min-height:44px;font-size:25px;font-weight:900;letter-spacing:-1.5px;gap:6px}.brand-symbol{background:var(--sky);font-size:12px;letter-spacing:-1px;width:34px;height:34px;display:grid;place-items:center;border-radius:12px 12px 6px 12px;transform:rotate(-8deg)}.brand-dot{color:#20885e}.menu-toggle{border:1px solid var(--line);border-radius:10px;background:white;padding:0 12px}.menu-toggle span{margin-left:8px}nav{display:flex;flex-direction:column;width:100%;padding:8px 0 18px}nav a{min-height:48px;display:flex;align-items:center;padding:8px 12px;border-radius:8px;font-weight:700}nav a:hover{background:var(--pale)}nav .nav-consult{background:var(--pale);gap:24px}.hero{background:linear-gradient(115deg,#f1faff 0%,#e7f6fe 70%,#f6fcff 100%);overflow:hidden}.hero-grid{display:grid;gap:28px;padding-block:48px 32px}.eyebrow{font-size:16px;font-weight:700;letter-spacing:.06em;color:#466878;margin-bottom:14px}.hero .eyebrow{display:flex;align-items:center;gap:8px;letter-spacing:0}.eyebrow>span{height:8px;width:8px;border-radius:50%;background:var(--green)}h1{font-size:clamp(37px,6vw,66px);font-weight:900;letter-spacing:-.065em;line-height:1.22}h1>span{position:relative;display:inline-block;z-index:0}h1>span:after{content:"";position:absolute;height:15px;background:#9eddf9;bottom:4px;left:0;right:0;z-index:-1;border-radius:5px}.hero-slogan{font-size:21px;font-weight:700;margin-top:25px}.hero-description{margin-top:10px;color:var(--muted)}.button{min-height:52px;padding:13px 21px;display:inline-flex;justify-content:center;align-items:center;gap:22px;border:0;border-radius:12px;font-weight:700;max-width:100%}.primary{background:var(--sky);margin-top:27px}.primary:hover{background:#8ad6f8}.dark{background:var(--ink);color:white}.dark:hover{background:#315b70}.hero-note{margin-top:15px;color:var(--muted);font-size:16px}.desktop-break{display:none}.hero-art{position:relative;height:300px;width:100%;max-width:430px;margin:auto}.hero-art:before{content:"";position:absolute;width:255px;height:255px;border:1px solid #b3e2f6;border-radius:50%;top:10px;left:calc(50% - 127px);box-shadow:0 0 0 25px #ffffff38}.study-card{position:absolute;top:40px;left:calc(50% - 100px);width:200px;height:208px;padding:22px;background:white;border:1px solid #d6ebf4;border-radius:15px;transform:rotate(-9deg);box-shadow:6px 12px 0 #c3e6f580;z-index:2}.card-kicker{font-size:10px;letter-spacing:1px;font-weight:700;color:#5a7687}.card-title{display:block;font-size:32px;font-weight:900;line-height:1.3;margin-top:12px;letter-spacing:-2px}.card-lines i{display:block;width:90px;height:5px;background:#e0edf3;margin-top:10px;border-radius:3px}.card-lines i+ i{width:65px}.card-check{position:absolute;right:-14px;bottom:20px;background:var(--green);color:white;width:57px;height:57px;border:5px solid #e8f8f2;border-radius:50%;font-size:33px;display:grid;place-items:center}.book{position:absolute;height:32px;border-radius:5px 10px 10px 5px;padding:2px 18px;font-size:16px;font-weight:700;left:calc(50% - 111px);width:220px}.book-green{bottom:32px;background:#a7e3c8;transform:rotate(5deg);z-index:1}.book-blue{bottom:8px;background:#68c8f3;transform:rotate(-3deg)}.art-label{position:absolute;top:5px;right:4px;background:white;border-radius:20px;padding:6px 12px;transform:rotate(6deg);font-size:16px;z-index:3}.art-pill{position:absolute;bottom:68px;left:0;border-radius:24px;background:#203f51;color:white;padding:6px 12px;font-size:16px;z-index:3;transform:rotate(-5deg)}.art-pill span{color:#98d7f5;margin-left:8px}.art-spark{position:absolute;font-size:34px;color:#2885b1}.spark-one{top:7px;left:10px}.spark-two{right:0;bottom:42px;color:#31916a}.search-section{padding-block:48px}.search-section h2{margin-bottom:8px}.search-section p{color:var(--muted)}#search-form{margin-top:24px}.search-field{display:flex;align-items:center;border:2px solid var(--sky);border-radius:14px;padding:5px;background:white;min-width:0;gap:4px}.search-field>span{font-size:28px;padding-left:7px}.search-field input{border:0;min-width:0;width:100%;height:48px;padding:8px;background:transparent;color:var(--ink)}input::placeholder{color:#637986}.search-field button{border:0;border-radius:9px;background:var(--ink);color:white;flex-shrink:0;padding:8px 15px}.search-suggestions{display:flex;align-items:center;flex-wrap:wrap;gap:5px;margin-top:8px}.search-suggestions>span{width:100%;color:var(--muted);margin-top:6px}.search-suggestions button{background:transparent;border:0;padding:8px 12px;border-radius:24px}.search-suggestions button:hover{background:var(--pale)}#search-reset{margin-left:auto;text-decoration:underline;text-underline-offset:4px}.search-status{margin-top:16px;font-size:16px}.learning-area{background:#f8fafb;padding-block:48px}.section-heading{display:flex;justify-content:space-between;gap:18px;flex-direction:column;margin-bottom:26px}.section-heading>p{color:var(--muted)}.school-grid{display:grid;gap:20px}.school-card{background:white;border:1px solid var(--line);border-radius:20px;padding:25px;min-width:0}.topic-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:18px}.topic-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;font-size:26px;font-weight:800}.blue{background:#e0f4fe}.green{background:#e2f5eb}.yellow{background:#fff0d6}.topic-caption{font-size:16px;color:var(--muted)}.topic-intro{color:var(--muted);margin-top:8px;min-height:54px}.school-card article{border-top:1px solid var(--line);padding-top:23px;margin-top:23px}.content-tag{font-size:16px;color:#426b7d;margin-bottom:8px;font-weight:700}.school-card article>p:last-child,.wide-content article>p:last-child,.resource-grid article p:not(.content-tag){color:var(--muted);margin-top:11px}.text-button{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;background:none;border:0;border-top:1px solid var(--line);width:100%;padding:15px 0 0;margin-top:24px;text-align:left;font-weight:700}.text-button span{color:#59717d;font-size:16px;font-weight:400}.text-button:hover{color:#16749f}.wide-section{display:grid;gap:28px;margin-top:32px;border-top:1px solid var(--line);padding-top:32px}.wide-heading>p:not(.eyebrow){margin-top:12px;color:var(--muted)}.wide-heading .text-button{max-width:290px}.wide-content{display:grid;gap:18px}.wide-content article{background:white;border:1px solid var(--line);border-radius:16px;padding:24px;min-width:0}.wide-content h3{font-size:21px}.international{padding:28px 22px;background:#eaf5f0;border:0;border-radius:20px;margin-top:36px}.international .wide-content article{background:#ffffffb3;border-color:#d2e5db}.resources{padding-block:48px}.resource-grid{display:grid;gap:20px}.resource-grid article{display:flex;gap:16px;padding:24px 0;border-top:1px solid var(--line);min-width:0}.resource-number{color:#298963;font-size:22px;font-weight:700}.resource-grid h3{font-size:21px}.consult{display:flex;flex-direction:column;gap:28px;background:#e6f6fe;padding:28px 22px;border-radius:22px;margin-bottom:48px}.consult h2{font-size:27px}.consult p:not(.eyebrow){margin-top:16px;color:var(--muted)}.consult-action{display:flex;align-items:flex-start;flex-direction:column;gap:12px}.status-badge{display:inline-block;border-radius:20px;background:#d6ede2;color:#245e46;padding:5px 12px;font-size:16px;font-weight:700}.consult-action p{font-size:16px;margin-top:0!important}.site-footer{border-top:1px solid var(--line);padding-block:32px;background:#fcfdfd}.footer-inner{display:flex;flex-direction:column;gap:25px}.footer-inner p,.footer-detail small{font-size:16px;color:var(--muted)}.footer-links{display:flex;flex-wrap:wrap;gap:5px 20px;margin:8px 0}.footer-links button{padding:7px 0;background:none;border:0;color:var(--muted);text-align:left}dialog{width:min(440px,calc(100% - 32px));border:1px solid var(--line);border-radius:20px;padding:28px;color:var(--ink);box-shadow:0 20px 80px #203f5129}dialog::backdrop{background:#142c3b77}dialog h2{margin-top:20px}dialog p{margin:15px 0 24px}dialog .button{width:100%}body.modal-open{overflow:hidden}section[id]{scroll-margin-top:20px}@media(min-width:700px){.container{width:min(1120px,calc(100% - 64px))}.hero-grid{grid-template-columns:1.15fr 1fr;align-items:center;padding-block:66px;gap:16px}.hero-art{transform:scale(1.08)}.school-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.school-card{padding:20px}.topic-top{align-items:flex-start;flex-direction:column}.wide-section{grid-template-columns:1fr 2fr;gap:32px}.wide-content{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.international{padding:32px}.section-heading{flex-direction:row;align-items:flex-end}.resource-grid{grid-template-columns:1fr 1fr;gap:36px}.consult{padding:36px}.search-section{max-width:840px;text-align:center}.search-suggestions>span{width:auto;margin:0}.search-field{padding:7px}.search-field button{padding-inline:26px}.search-suggestions{text-align:left}.footer-inner{flex-direction:row;justify-content:space-between;gap:40px}.footer-detail{max-width:570px}.resources,.learning-area{padding-block:64px}}@media(min-width:1000px){.menu-toggle{display:none}.header-inner{flex-wrap:nowrap;min-height:90px}nav{width:auto;flex-direction:row;align-items:center;gap:18px;padding:0}nav a{padding-inline:12px}.hero-grid{min-height:560px;gap:48px}.hero-art{transform:scale(1.2)}.desktop-break{display:block}.hero-description{font-size:18px}.topic-top{flex-direction:row;align-items:center}.school-card{padding:28px}.wide-section{margin-top:44px;padding-top:44px}.international{padding:36px}.consult{flex-direction:row;justify-content:space-between;align-items:center;padding:44px}.consult h2{font-size:32px}h2{font-size:32px}.consult-action{flex-shrink:0}.search-section{padding-block:56px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Middle study page: reuse shared cards, colors, navigation and dialog. */
a.text-button{min-height:44px}
:is(.middle-page,.study-page) .middle-hero{padding-block:44px}
:is(.middle-page,.study-page) h1{font-size:clamp(34px,5vw,54px);max-width:820px;line-height:1.3}
:is(.middle-page,.study-page) .hero-description{max-width:680px}
.middle-jumps{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.middle-jumps a{display:flex;align-items:center;min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--white);font-weight:700}
.middle-jumps a:hover{background:var(--pale)}
.middle-lead{margin-bottom:24px;color:var(--muted)}
:is(.middle-page,.study-page) .school-card>p{margin-top:12px}
:is(.middle-page,.study-page) .school-card>p:not(.content-tag){color:var(--muted)}
.middle-action{padding-top:16px;border-top:1px solid var(--line)}
.middle-reading{max-width:840px}
.middle-faq article+article{margin-top:24px;padding-top:24px;border-top:1px solid var(--line)}
.middle-faq h3{font-size:21px}
.middle-faq p{margin-top:12px;color:var(--muted)}
:is(.middle-page,.study-page) .resource-grid article>div{min-width:0}
:is(.middle-page,.study-page) #grades .school-card{border-top:3px solid var(--green)}
:is(.middle-page,.study-page) #subjects .content-tag{border-left:3px solid var(--green);padding-left:10px}
:is(.middle-page,.study-page) .consult>div{min-width:0}
:is(.middle-page,.study-page) .consult-action{width:100%}
:is(.middle-page,.study-page) .consult-action .button{width:100%;min-height:56px;font-size:18px}
@media(min-width:1000px){.middle-subjects{grid-template-columns:repeat(3,minmax(0,1fr))}:is(.middle-page,.study-page) .middle-hero{padding-block:64px}}
@media(min-width:1000px){:is(.middle-page,.study-page) .consult-action{width:280px}}

/* Consultation CTAs only; keep shared dark buttons unchanged. */
.consult-action .button{background:#CC4B30;color:#FFFFFF}
.consult-action .button:hover{background:#C7462B}
.consult-action .button:focus-visible{outline:3px solid #203F51;outline-offset:4px}
@media(max-width:999px){.consult-action{width:100%}.consult-action .button{width:100%;min-height:52px}}

/* Shared inquiry form and a reserved lane for fixed quick actions. */
.inquiry{padding-block:36px 48px;border-top:1px solid var(--line)}
.inquiry-intro{margin-top:12px;color:var(--muted)}
.inquiry-notice{margin-top:12px;font-size:16px;color:var(--muted)}
.inquiry-form{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;margin-top:26px;max-width:840px}
.inquiry-field{display:flex;flex-direction:column;gap:8px;min-width:0}
.inquiry-field label{font-weight:700}
.inquiry-field input,.inquiry-field select,.inquiry-field textarea{width:100%;min-width:0;min-height:48px;border:1px solid #8396a1;border-radius:10px;padding:11px 12px;background:#fff;color:var(--ink);font:inherit;font-size:16px}
.inquiry-field textarea{resize:vertical;min-height:140px}
.inquiry-consent{display:flex;align-items:flex-start;gap:10px;min-height:44px;cursor:pointer}
.inquiry-consent input{flex:0 0 22px;width:22px;height:22px;margin:3px 0;accent-color:#245e46}
.inquiry-submit{background:#CC4B30;color:#FFFFFF;width:100%;min-height:52px}
.inquiry-submit:hover{background:#C7462B}
.inquiry-submit:disabled{cursor:not-allowed}
.inquiry :is(input,select,textarea,button):focus-visible,.quick-button:focus-visible{outline:3px solid #203F51;outline-offset:4px}
.quick-actions{position:fixed;right:max(10px,env(safe-area-inset-right));bottom:calc(20px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:10px;z-index:4}
.quick-button{display:flex;align-items:center;justify-content:center;width:48px;height:48px;min-height:48px;padding:0;border:1px solid #dce7ec;border-radius:50%;background:#fff;color:#203f51;box-shadow:0 2px 8px #203f511a}
.quick-inquiry{background:#245e46;color:#fff;border-color:#245e46}
.quick-kakao{background:#fee500;color:#302600;border-color:#e5ce00}
.quick-top{background:#f4f7f9}
.quick-button:hover{box-shadow:0 3px 12px #203f5133}
@media(min-width:700px){.inquiry-form{grid-template-columns:repeat(2,minmax(0,1fr))}.inquiry-wide{grid-column:1/-1}}
@media(max-width:1279px){body{padding-right:calc(64px + env(safe-area-inset-right))}.quick-actions{right:calc(8px + env(safe-area-inset-right));gap:8px}.quick-button{width:44px;height:44px;min-height:44px}}
@media(max-width:699px){.inquiry{width:calc(100% - 24px)}.inquiry-form{gap:20px}}

/* Mobile quick actions: one toggle, with no reserved content lane. */
.quick-action-list{display:flex;flex-direction:column;gap:inherit}
.quick-toggle{display:none}
@media(max-width:767px){
  body{padding-right:0;padding-bottom:calc(80px + env(safe-area-inset-bottom))}
  .quick-actions{right:calc(12px + env(safe-area-inset-right));bottom:calc(16px + env(safe-area-inset-bottom));gap:10px;align-items:flex-end}
  .quick-toggle{display:flex;background:#245e46;color:#fff;border-color:#245e46;font-size:16px;font-weight:700;width:48px;height:48px}
  .quick-action-list{display:grid;grid-template-columns:repeat(2,44px);gap:12px;padding:12px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 3px 12px #203f5126;max-height:calc(100dvh - 100px - env(safe-area-inset-bottom));overflow-y:auto}
  .quick-actions.is-input-focused,body:has(.menu-toggle[aria-expanded="true"]) .quick-actions{visibility:hidden;pointer-events:none}
}

/* Course discovery and the middle mathematics product guide. */
.course-section{padding-block:36px 44px}
.course-note{margin-top:14px;color:var(--muted)}
.course-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;margin-top:24px}
.course-card{display:flex;flex-direction:column;gap:16px;min-width:0;padding:22px;border:1px solid var(--line);border-top:3px solid #68C8F3;border-radius:16px;background:#fff}
.course-card h3{font-size:22px}
.course-card p{color:var(--muted)}
.course-cta{background:#CC4B30;color:#fff;min-height:48px;margin-top:18px;text-align:center;overflow-wrap:anywhere}
.course-cta:hover{background:#C7462B}
.course-card .course-cta{margin-top:auto;width:100%;gap:10px}
.course-steps{padding-left:24px;margin-top:22px}
.course-steps li+li{margin-top:16px}
.course-faq{margin-top:24px}
.course-related{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.course-related .course-cta{margin-top:0}
@media(min-width:700px){.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1000px){.course-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}