@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700;800&family=Noto+Sans+JP:wght@400;500;600;700;800;900&display=swap');
:root{--navy:#073d50;--teal:#13b8c8;--aqua:#e8f8f9;--cream:#fffaf2;--ink:#143139;--muted:#5c7074;--line:#d5e4e6}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:'DM Sans','Noto Sans JP',sans-serif;background:white;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}.wrap{width:min(1160px,calc(100% - 48px));margin:auto}.skip{position:absolute;top:-70px;left:16px;background:#fff;padding:10px;z-index:99}.skip:focus{top:10px}.site-header{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid #edf2f3}.header-inner{height:80px;display:flex;align-items:center;gap:32px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:22px;font-weight:900;letter-spacing:-.07em;white-space:nowrap;line-height:1}.brand small{display:block;margin-top:6px;font-size:8px;letter-spacing:.15em;color:#759399}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:var(--teal);color:white;font-size:23px}.desktop-nav{display:flex;gap:23px;margin-left:auto;font-size:12px;font-weight:800}.desktop-nav a:hover,.footer a:hover{color:#0b9eac}.header-cta{background:var(--navy);color:white;border-radius:100px;padding:12px 18px;font-size:12px;font-weight:800;white-space:nowrap}.menu-toggle,.mobile-nav{display:none}.section{padding:105px 0}.eyebrow{margin:0 0 17px;color:#129dac;font-size:12px;font-weight:800;letter-spacing:.18em}.section-heading{text-align:center;margin-bottom:45px}.section-heading h2{margin:0;font-size:clamp(30px,3.8vw,46px);letter-spacing:-.06em}.section-heading>p:last-child{color:var(--muted);font-size:14px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:12px 23px;border-radius:100px;font-size:13px;font-weight:800;text-align:center}.button-primary{background:var(--teal);color:white;box-shadow:0 8px 20px #08a4b32a}.button-primary:hover{background:#079aab}.button-outline{border:1px solid #81cbd2;color:var(--navy);background:#fff}.button-white{background:white;color:var(--navy)}
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.courses{background:#fff}.course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.course-grid article{border:1px solid var(--line);border-top:5px solid var(--teal);padding:30px 23px;min-height:285px}.course-grid article:nth-child(2){border-top-color:#6dcdd5}.course-grid article:nth-child(3){border-top-color:#0b5364}.course-grid article:nth-child(4){border-top-color:#fac572}.course-grid span{font-size:10px;letter-spacing:.1em;font-weight:800;color:#51a8b1}.course-grid h3{font-size:26px;margin:27px 0 15px}.course-grid p{font-size:13px;line-height:1.9;color:var(--muted)}.course-note{font-size:11px;color:#779095;margin-top:20px}.trial-band{background:linear-gradient(130deg,#dff7f8,#f7fdff);padding:85px 0}.trial-grid{display:grid;grid-template-columns:1fr .82fr;align-items:center;gap:10%}.trial-grid>div:first-child>p:last-child{font-size:15px;line-height:2;color:#46666b}.trial-card{background:white;border-radius:16px;padding:35px;box-shadow:0 18px 45px #06647718}.trial-label{font-size:12px;color:#159da9;font-weight:800}.trial-card strong{display:block;font-size:28px;margin:12px 0}.trial-card p{font-size:13px;line-height:1.9;color:var(--muted)}.trial-card .button{display:flex;margin:20px 0 16px}.phone-link{display:block;font-size:14px;font-weight:800;color:#087f8e;text-align:center}.trial-card small{display:block;margin-top:9px;font-size:10px;text-align:center;color:#789095}.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.flow-grid article{padding:30px;border:1px solid var(--line);border-radius:12px;position:relative}.flow-grid article:not(:last-child):after{content:'→';position:absolute;right:-15px;top:45%;z-index:1;display:grid;place-items:center;background:white;color:var(--teal);font-size:25px}.flow-grid span{color:#079cad;font-size:12px;letter-spacing:.1em;font-weight:800}.flow-grid h3{font-size:21px;margin:22px 0 10px}.flow-grid p{font-size:13px;line-height:1.9;color:var(--muted)}
.exam{background:#f9f7f2}.exam-grid{display:grid;grid-template-columns:.85fr 1fr;gap:10%;align-items:center}.exam-poster{min-height:490px;background:linear-gradient(145deg,#e9edf0 0%,#fff 58%,#b8cfd5 100%);box-shadow:20px 20px 0 #d9e4e6;padding:40px;display:flex;flex-direction:column;align-items:flex-start;justify-content:space-between;color:#102734;position:relative;overflow:hidden}.exam-poster:after{content:'∫ π √ x²';position:absolute;right:-60px;top:50px;transform:rotate(-20deg);font-size:90px;opacity:.09}.exam-poster>span{font-size:12px;letter-spacing:.16em;font-weight:800}.exam-poster strong{font-size:clamp(45px,6vw,85px);font-family:serif;line-height:1.2;letter-spacing:-.1em;z-index:1}.exam-poster div{background:#0b5364;color:white;padding:12px 16px;font-size:19px;font-weight:800}.exam-poster small{font-weight:800;color:#35636d}.exam-copy h2{font-size:42px;margin:0 0 22px}.exam-copy p:not(.eyebrow){line-height:2;font-size:14px;color:#4c6569}.exam-price{border-top:1px solid #c9d9dc;border-bottom:1px solid #c9d9dc;margin:25px 0;padding:15px 0;display:flex;justify-content:space-between;align-items:center}.exam-price span{font-size:11px;color:#68878d}.exam-price strong{font-size:26px}.exam-price small{font-size:12px}.exam-status{background:#e2f4f5;border-left:4px solid var(--teal);padding:14px;font-size:13px;line-height:1.8}.text-link{display:inline-block;margin-top:20px;color:#078b9b;border-bottom:1px solid;font-size:13px;font-weight:800}.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.media-grid a{display:flex;flex-direction:column;min-height:185px;background:#f0fafb;padding:25px;border-radius:12px}.media-grid a:hover{background:#d9f3f5}.media-grid a>span{font-size:30px;color:#0b9eac}.media-grid strong{font-size:20px;margin-top:10px}.media-grid small{margin-top:auto;color:#53777c}.contact{background:#0b5364;color:white;padding:55px 0}.contact-inner{display:flex;justify-content:space-between;align-items:center;gap:20px}.contact .eyebrow{color:#93eced}.contact h2{font-size:32px;margin-bottom:8px}.contact p:last-child{font-size:13px}.footer{background:#052d3b;color:white}.footer-main{display:flex;justify-content:space-between;gap:30px;padding:50px 0}.footer .brand-mark{background:#17b8c7}.footer-main p{font-size:12px;color:#a8c7cc}.footer-main nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:15px 22px;max-width:520px;font-size:12px}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid #30505a;padding:18px 0;font-size:10px;color:#a8c7cc}
@media(max-width:900px){.desktop-nav,.header-cta{display:none}.menu-toggle{display:flex;margin-left:auto;width:42px;height:42px;border:0;background:#e5f8f9;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:5px}.menu-toggle span{width:19px;height:2px;background:#0b5364}.mobile-nav:not([hidden]){display:flex;flex-direction:column;padding:12px 24px 20px;background:white;border-top:1px solid var(--line)}.mobile-nav a{padding:10px;font-size:14px;font-weight:700}.hero-grid{min-height:590px}.hero-visual{min-height:580px}.hero-visual img{bottom:-95px}.course-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:680px){.wrap{width:min(100% - 32px,480px)}.header-inner{height:66px}.section{padding:70px 0}.hero-grid,.about-grid,.trial-grid,.exam-grid{grid-template-columns:1fr}.hero-grid{min-height:0}.hero-copy{padding:55px 0 0}.hero h1{font-size:43px}.hero-lead{font-size:14px}.hero-visual{min-height:390px}.hero-circle{width:440px;height:440px;bottom:-170px;left:0}.hero-visual img{width:310px;left:10%;bottom:-115px}.hero-sticker{width:105px;height:105px;font-size:12px;right:5px;bottom:35px}.math-mark{font-size:50px!important}.hero-foot{margin-top:25px}.trust-inner{display:grid;grid-template-columns:1fr;gap:5px;font-size:11px}.about-grid{gap:40px}.about-visual{max-width:350px;margin:auto}.portrait-card{height:350px}.portrait-card img{bottom:-85px}.feature-grid,.flow-grid,.media-grid{grid-template-columns:1fr}.feature-card{min-height:0}.course-grid{grid-template-columns:1fr 1fr}.course-grid article{min-height:270px;padding:20px 15px}.course-grid h3{font-size:22px}.course-grid p{font-size:12px}.trial-grid{gap:25px}.flow-grid article:not(:last-child):after{content:'↓';right:50%;top:auto;bottom:-21px}.exam-grid{gap:50px}.exam-poster{min-height:390px}.exam-poster strong{font-size:62px}.contact-inner,.footer-main{display:block}.contact .button{margin-top:20px}.footer-main nav{justify-content:flex-start;margin-top:30px}.footer-bottom{gap:12px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.hero-circle{display:none}.hero-visual img{width:min(100%,520px);height:auto;left:4%;bottom:78px;border-radius:22px;box-shadow:0 22px 42px #18374235;filter:none}.hero-sticker{bottom:40px}.portrait-card{border-radius:18px;background:#d8d3d0}.portrait-card img{width:100%;height:100%;object-fit:cover;left:0;bottom:0;transform:none;max-width:100%}
@media(max-width:900px){.hero-visual img{bottom:70px}}
@media(max-width:680px){.hero-visual{min-height:365px}.hero-visual img{width:min(100%,320px);left:0;bottom:40px}.hero-sticker{bottom:10px}.portrait-card img{bottom:0}}
.ayu-feature{display:grid;grid-template-columns:240px 1fr;align-items:center;gap:48px;max-width:800px;margin:0 auto 45px;padding:24px 38px;background:#f7fbfc;border:1px solid #deedef;border-radius:18px}.ayu-feature img{display:block;width:100%;height:auto;object-fit:contain}.ayu-feature span{color:#119aaa;letter-spacing:.14em;font-size:11px;font-weight:800}.ayu-feature h3{font-size:28px;margin:10px 0}.ayu-feature p{font-size:14px;line-height:1.9;color:var(--muted)}.ayu-feature .text-link{margin-top:4px}
@media(max-width:680px){.ayu-feature{grid-template-columns:1fr;gap:15px;padding:24px}.ayu-feature img{max-width:230px;margin:auto}.ayu-feature h3{font-size:24px}}
@media(max-width:360px){.hero h1{font-size:36px;line-height:1.4}.hero-lead{font-size:13px}.hero-copy{padding-top:45px}.hero-actions .button{font-size:12px}.hero-foot{gap:9px;font-size:10px}}
[hidden]{display:none!important}.booking-actions{display:grid;gap:9px}.booking-actions:empty{display:none}.booking-actions .button{width:100%}.booking-embed{margin:18px 0}.booking-embed iframe{display:block;width:100%;height:560px;border:1px solid var(--line);border-radius:10px;background:white}.purchase-button{margin-top:19px}
.exam-poster-image{display:block;width:100%;height:auto;box-shadow:18px 18px 0 #d9e4e6;border:1px solid #d7e1e4}
[hidden]{display:none!important}.media-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.media-grid a{min-width:0;gap:7px}.media-grid small{line-height:1.6;font-size:12px}@media(max-width:680px){.media-grid{grid-template-columns:1fr}}