:root{--ink:#193653;--blue:#438caf;--yellow:#f4d572;--paper:#fbfaf5;--soft:#eef3f3;--muted:#657888;--line:#dce3e3;--white:#fff;--green:#477569}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;color:var(--ink);background:var(--paper);font-family:Arial,"Geeza Pro",system-ui,sans-serif;line-height:1.7}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}button:disabled{cursor:wait;opacity:.6}img{max-width:100%;display:block}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.35}h2{font-size:clamp(27px,3.2vw,40px);letter-spacing:-.7px;margin-bottom:16px}h3{font-size:23px}p{color:var(--muted)}[hidden]{display:none!important}.wrap{width:min(1160px,calc(100% - 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p,.footer>a:last-child{margin:0;font-size:12px;color:var(--muted)}dialog{width:min(570px,calc(100% - 32px));max-height:90dvh;overflow-y:auto;border:1px solid var(--line);border-radius:20px;padding:28px 32px;background:var(--paper);color:var(--ink);box-shadow:0 30px 100px #19365340}dialog::backdrop{background:#112d48a6;backdrop-filter:blur(3px)}.dialog-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.dialog-top .eyebrow{margin:0}.close{border:1px solid var(--line);background:white;border-radius:50%;width:36px;height:36px;font-size:24px;line-height:1}.dialog-top+h2{font-size:26px;margin:0 0 15px}dialog p{font-size:14px;line-height:1.9}.detail-list{margin:22px 0 28px;padding-right:22px;font-size:14px}.detail-list li{margin-bottom:10px}.dialog-note{font-size:11px;color:var(--muted);margin:17px 0 0}label{display:block;font-size:13px;font-weight:700;margin-bottom:17px}label .muted{font-weight:400;color:var(--muted)}select,textarea{width:100%;border:1px 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@media(min-width:1500px){.hero{gap:100px}}
@media(max-width:1050px){.header nav{gap:18px}.header-inner{gap:16px}.brand{font-size:17px}.header .button{font-size:12px}.hero{gap:35px}.hero-visual{height:440px}.hero-cover{height:370px}.visual-wash{width:350px;height:370px}.speech{left:-7px;font-size:13px}.speech span{font-size:16px}.audio{right:-7px;font-size:12px}.book-info{padding:26px}.book-actions{gap:16px}.method-layout{gap:60px}.parents{gap:60px}}
@media(max-width:760px){.wrap{width:calc(100% - 36px)}.section{padding-block:54px}.header-inner{width:calc(100% - 32px);height:80px;flex-wrap:wrap;justify-content:space-between;gap:8px;padding:12px 0}.header .brand img{width:34px;height:34px}.header .brand{font-size:16px;gap:8px}.brand small{font-size:7px;letter-spacing:2.4px}.header nav{order:3;width:100%;justify-content:center;gap:29px;font-size:12px}.header{position:relative}.header-inner{height:106px}.header .button{font-size:11px;min-height:37px;padding:7px 10px;gap:8px}.hero{grid-template-columns:1fr;gap:20px;padding-block:44px 30px;min-height:0}.hero-copy{text-align:center}.hero-copy .eyebrow{font-size:11px;margin-bottom:20px}.hero-copy h1{font-size:43px;line-height:1.3;margin-bottom:21px}.hero-copy p{font-size:16px;line-height:1.9}.hero-actions{justify-content:center;gap:12px 20px;margin-top:24px}.hero-note{justify-content:center;margin-top:20px;font-size:12px}.hero-visual{height:390px;max-width:420px;width:100%;margin:auto}.hero-cover{height:325px}.visual-wash{height:315px;width:330px}.speech{left:7px;top:34px;padding:11px 14px}.audio{right:8px;bottom:28px;padding:12px}.star-one{font-size:48px;right:28px}.star-two{left:20px;bottom:10px;font-size:63px}.learning-strip .wrap{gap:10px;padding-block:16px;font-size:11px;justify-content:space-between}.learning-strip span{gap:6px}.learning-strip b{font-size:10px}.section-heading{display:block;margin-bottom:27px}.section-heading p{margin-top:16px;font-size:13px}.section-heading h2{font-size:29px}.book-grid{grid-template-columns:1fr;gap:24px}.book-art{height:300px}.book-art>img{height:255px}.book-tag{top:17px;right:17px}.speak-art>img{height:195px}.speak-art>strong{font-size:58px}.book-info h3{min-height:0;font-size:29px}.book-info p{min-height:0}.book-number{font-size:9px}.book-actions{gap:20px}.book-info{padding:25px}.access-note{align-items:flex-start;text-align:center;font-size:11px;line-height:1.8}.method-layout{grid-template-columns:1fr;gap:38px}.method-intro h2{font-size:32px}.method-intro p{max-width:none}.hand-note{margin-top:7px}.method-steps article{gap:20px}.pathways{padding-bottom:0}.path-grid{grid-template-columns:1fr;gap:15px}.path-grid article{padding:25px}.parents{grid-template-columns:1fr;gap:30px}.parent-intro h2 br{display:none}.parent-intro p{max-width:none}.parent-intro .button{font-size:12px}.faq summary{font-size:14px}.faq p{font-size:13px}.closing{padding:30px 26px;display:block;border-radius:18px}.closing h2{font-size:29px}.closing .button{margin-top:25px;width:100%}.footer{flex-wrap:wrap;justify-content:center;text-align:center;gap:20px;padding-block:25px}.footer .brand{font-size:14px}.footer p{width:100%;order:3;font-size:11px}.footer>a:last-child{font-size:11px}.form-row{grid-template-columns:1fr;gap:0}dialog{padding:23px}.dialog-top+h2{font-size:23px}dialog p{font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* English interface */
html[lang=en] .book-number,html[lang=en] .book-info h3{text-align:left}html[lang=en] .detail-list{padding-right:0;padding-left:22px}html[lang=en] .faq p{padding-left:0;padding-right:20px}html[lang=en] .header-inner{height:auto;min-height:94px;padding-block:15px}html[lang=en] .header nav{flex-wrap:wrap;gap:12px 22px}html[lang=en] .hero-copy h1{font-size:clamp(38px,4.5vw,62px);line-height:1.12;max-width:560px}html[lang=en] .hero-copy p{line-height:1.65}@media(max-width:760px){html[lang=en] .header .button{max-width:145px}html[lang=en] .learning-strip span{align-items:flex-start;line-height:1.5}html[lang=en] .hero-copy h1{font-size:42px}html[lang=en] .hero-copy .eyebrow{letter-spacing:.5px}}