:root{--paper:#faf8f2;--ink:#203c3b;--muted:#737a70;--line:#dce0d4;--sage:#e7eddf;--gold:#c9a562;--white:#fff;--radius:5px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:35px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}a{color:inherit;text-decoration:none}button,a,input,select,summary{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--gold);outline-offset:5px}button:disabled{cursor:default}.container{width:min(1180px,calc(100% - 96px));margin-inline:auto}.header{width:min(1340px,calc(100% - 72px));margin:auto;height:111px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:32px}.brand{display:flex;gap:12px;align-items:center;font-size:27px;font-weight:700;letter-spacing:-1px;white-space:nowrap}.brand-icon{width:42px;height:42px;background:var(--ink);color:var(--paper);display:grid;place-items:center;border-radius:50%;font:italic 31px Georgia,serif;letter-spacing:-3px;padding-right:5px}.brand-sub{display:block;font-size:10px;text-transform:uppercase;font-weight:400;letter-spacing:1.25px;margin-top:4px}.header nav{display:flex;gap:27px;font-size:13px}.header nav a:hover,.text-link:hover{color:#9c7639}.button{background:var(--ink);color:var(--paper);display:inline-flex;align-items:center;justify-content:space-between;gap:30px;min-height:53px;padding:17px 23px;border:1px solid transparent;border-radius:var(--radius);font-size:13px;font-weight:600;transition:background .2s,transform .2s}.button:hover{background:#35524a;transform:translateY(-2px)}.button span{font-size:19px;font-weight:400}.button.small{min-height:45px;padding:12px 17px;font-size:12px;gap:20px}.hero{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:50px;padding-top:81px;padding-bottom:71px;align-items:center}.eyebrow,.section-number{font-size:10px;letter-spacing:1.7px;font-weight:600;line-height:1.6}.eyebrow{display:flex;gap:10px;align-items:center;margin:0 0 26px}.status-dot{width:7px;height:7px;background:var(--gold);border-radius:50%}h1{font-weight:500;font-size:clamp(55px,5.8vw,80px);line-height:1.06;letter-spacing:-3.2px;margin:0 0 27px}em,.serif{font-family:Georgia,'Times New Roman',serif;font-weight:400}em{font-style:italic}.serif{font-style:italic}.accent-dot{color:var(--gold)}.lead{max-width:402px;font-size:16px;line-height:1.8;color:#63706a}.hero-actions{display:flex;gap:25px;align-items:center;margin-top:31px}.text-link{font-size:12px;display:inline-flex;align-items:center;gap:13px}.hero-note{display:flex;gap:11px;align-items:center;font-size:10px;line-height:1.6;margin-top:35px;color:var(--muted)}.note-mark{font:27px Georgia,serif;border:1px solid var(--line);border-radius:50%;width:40px;height:40px;display:grid;place-items:center;color:var(--ink)}.math-board{background:var(--ink);border-radius:var(--radius);color:var(--paper);position:relative;transform:rotate(-2deg);box-shadow:10px 14px 0 #e8e9de;padding:27px 25px 23px;min-width:0}.board-top{display:flex;justify-content:space-between;font-size:9px;letter-spacing:1.5px;color:#c1ceb9}.board-top span:last-child{font-family:Georgia,serif;letter-spacing:0;font-style:italic;font-size:12px}.math-board svg{width:100%;display:block;margin-top:16px}.board-bottom{display:flex;align-items:center;justify-content:space-between;font:italic 19px/1.4 Georgia,serif;padding:0 12px 0 7px}.board-seal{width:68px;height:68px;border:1px solid #a7bda0;border-radius:50%;display:grid;place-content:center;text-align:center;font:11px/1.4 Arial,sans-serif;transform:rotate(12deg);color:#d6e0ca}.hero-index{position:absolute;bottom:15px;right:0;letter-spacing:1.8px;font-size:8px;color:var(--muted)}.principles{border-top:1px solid var(--line);padding-block:78px;display:grid;grid-template-columns:1fr 1.1fr;gap:80px}h2{font-size:clamp(30px,3.5vw,45px);line-height:1.15;letter-spacing:-1.5px;font-weight:400;margin:19px 0 24px}h3{font-size:19px;line-height:1.3;font-weight:500;letter-spacing:-.3px}.principle-list article{display:flex;gap:25px;padding:0 0 23px;border-bottom:1px solid var(--line);margin-bottom:25px}.principle-list article:last-child{margin-bottom:0;border:0;padding:0}.principle-list article>span{font:italic 17px Georgia,serif;color:var(--gold);padding-top:3px}.principle-list h3{margin:0 0 8px}.principle-list p{margin:0;font-size:13px;line-height:1.75;color:#69756b}.teachers-section{background:var(--sage);padding:75px 0 65px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:50px}.section-heading>p{font-size:13px;line-height:1.8;max-width:270px;margin-bottom:29px;color:#68736a}.filters{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0 28px}.filter{background:transparent;color:var(--ink);border:1px solid #cad3c1;border-radius:30px;padding:10px 17px;font-size:11px}.filter.active,.filter:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}.teachers-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}.teacher-card{background:var(--paper);border-radius:var(--radius);overflow:hidden}.teacher-card[hidden]{display:none}.portrait{height:220px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}.portrait-one{background:#d4d4bc;color:#4f6256}.portrait-two{background:#d6bca3;color:#765b4c}.portrait-three{background:#bac9c2;color:#3d6664}.portrait-initials{font:italic 94px Georgia,serif;z-index:1;letter-spacing:-10px;transform:translateX(-17px);opacity:.85}.portrait-formula{position:absolute;right:20px;top:20px;font:italic 23px Georgia,serif;transform:rotate(9deg)}.portrait svg{position:absolute;right:-13px;bottom:10px;width:170px;opacity:.35;fill:none;stroke:currentColor;stroke-width:1.4}.portrait-label{position:absolute;left:20px;bottom:19px;font-size:8px;letter-spacing:1.5px;z-index:2}.teacher-info{padding:23px 22px 17px}.tags{display:flex;gap:7px}.tags span{padding:5px 8px;background:#eaece2;border-radius:2px;font-size:9px}.teacher-info h3{font-size:24px;font-family:Georgia,serif;margin:16px 0 11px}.teacher-info p{font-size:12px;line-height:1.8;color:#6c746b;margin-bottom:25px;min-height:65px}.teacher-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid var(--line);padding-top:14px}.teacher-footer>span{font-size:9px;color:var(--muted)}.round-button{border:1px solid #bfcabb;border-radius:50%;background:transparent;width:34px;height:34px;color:var(--ink);font-size:19px;display:grid;place-items:center}.round-button:hover{background:var(--ink);color:var(--paper)}.demo-note{font-size:10px;color:#6e776c;line-height:1.7;margin:22px 0 0}.practice{padding-block:90px;display:grid;grid-template-columns:.9fr 1.1fr;gap:85px;align-items:center}.practice>div>p{font-size:13px;line-height:1.85;color:#6c766c;max-width:300px}.practice-level{display:block;margin-top:25px;font-size:10px;color:var(--muted)}.problem-card{padding:30px;border:1px solid #cdd4c5;border-radius:var(--radius);box-shadow:7px 7px 0 #edf0e5;background:#fefdf8}.problem-top{display:flex;justify-content:space-between;font-size:9px;letter-spacing:1.3px;color:#727b6e}.problem-top span{font-family:Georgia,serif;font-style:italic;font-size:13px;letter-spacing:0}.problem-card h3{font:25px/1.5 Georgia,serif;margin:25px 0}.problem-card label{display:block;font-size:10px;margin-bottom:8px;color:var(--muted)}.answer-row{display:flex;gap:9px}.answer-row input{width:100%;min-width:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:14px;font-size:12px;color:var(--ink)}.answer-row .button{padding:13px;min-height:46px;font-size:11px;gap:16px;flex-shrink:0}.answer-result{font-size:12px;line-height:1.6;color:#446843;margin:12px 0}.answer-result:empty{display:none}.problem-card details{margin-top:18px;border-top:1px solid var(--line);padding-top:17px}.problem-card summary{font-size:11px;cursor:pointer}.problem-card details p{font-size:12px;line-height:1.9;color:#687267}.plan-section{background:var(--ink);color:var(--paper);padding-block:70px}.plan-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.plan-grid .section-number{color:#c0d2b6}.plan-grid p{font-size:13px;line-height:1.8;color:#c3cdc0;max-width:360px}.plan-grid h2{font-size:41px}.select-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}.select-grid label{display:block;font-size:10px;color:#d4ddcd;letter-spacing:.4px}.select-grid select{display:block;width:100%;margin-top:11px;min-height:49px;border:1px solid #809580;border-radius:var(--radius);background:#2c4843;color:#fbfbef;padding:12px 10px;font-size:12px}.pale{background:#e4d6af;color:var(--ink);width:100%}.pale:hover{background:#f0e3bd}.plan-result{font-size:12px;line-height:1.8;margin-top:15px;color:#e4e9dc}.plan-result:empty{display:none}.plan-result ol{padding-left:20px}.plan-result li+li{margin-top:6px}.faq{padding-block:85px;display:grid;grid-template-columns:.9fr 1.1fr;gap:85px}.faq>div>p{font-size:13px;color:var(--muted)}.faq-items details{border-bottom:1px solid var(--line);padding:20px 0}.faq-items details:first-child{padding-top:0}.faq-items summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:22px;font-size:14px;line-height:1.5}.faq-items summary::-webkit-details-marker{display:none}.faq-items summary:after{content:'+';font-size:20px;line-height:1;flex-shrink:0;font-weight:400;color:#7b8774}.faq-items details[open] summary:after{content:'−'}.faq-items p{font-size:12px;line-height:1.9;color:var(--muted);padding-right:25px}.footer{border-top:1px solid var(--line);padding-block:32px 22px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:25px}.footer>.brand{font-size:23px}.footer .brand-sub{font-size:8px}.footer>span{font:italic 16px Georgia,serif;color:#6c7d6a}.footer>a:last-of-type{font-size:11px}.footer>p{flex-basis:100%;border-top:1px solid var(--line);padding-top:20px;margin:0;font-size:9px;color:var(--muted);line-height:1.7}dialog{border:0;border-radius:7px;color:var(--ink);background:var(--paper);padding:46px;width:min(560px,calc(100% - 32px));max-height:85dvh;overflow:auto;box-shadow:0 20px 80px #0004}dialog::backdrop{background:#102c2acc;backdrop-filter:blur(4px)}.dialog-close{position:absolute;right:15px;top:15px}dialog h2{font-family:Georgia,serif;font-size:35px}dialog p,dialog li{font-size:14px;line-height:1.8;color:#647267}dialog ol{padding-left:20px;margin-bottom:30px}dialog h3{font-size:16px}@media(min-width:1600px){.hero{padding-top:105px;padding-bottom:100px}.math-board{max-width:550px}}@media(max-width:1000px){.container{width:calc(100% - 60px)}.header{width:calc(100% - 48px)}.header nav{gap:16px;font-size:11px}.brand-sub{font-size:8px}.header .small{display:none}.hero{gap:30px}.hero-actions{gap:16px;flex-wrap:wrap}.hero .button{gap:20px}.principles{gap:40px}.practice,.faq{gap:40px}.plan-grid{gap:40px}.teacher-info{padding:18px 16px}.portrait{height:195px}.portrait-initials{font-size:78px}.teacher-info h3{font-size:22px}.teacher-info p{min-height:90px}.teacher-footer>span{font-size:8px}.section-heading>p{max-width:230px}}@media(max-width:700px){.container{width:calc(100% - 40px)}.header{width:calc(100% - 40px);height:85px;gap:16px}.brand{font-size:24px}.brand-icon{width:36px;height:36px;font-size:27px}.brand-sub{font-size:7px;letter-spacing:.8px}.header nav a{display:none}.header nav a[href='#teachers']{display:block;font-size:11px}.hero{grid-template-columns:1fr;padding-top:43px;padding-bottom:62px;gap:40px}.eyebrow{font-size:9px;margin-bottom:22px}h1{font-size:46px;letter-spacing:-1.8px;margin-bottom:20px}.lead{font-size:14px;line-height:1.85;max-width:350px}.hero-actions{flex-wrap:nowrap;gap:19px}.hero .button{padding:15px 16px;font-size:11px;gap:19px;min-height:49px}.text-link{font-size:10px;gap:8px}.hero-note{margin-top:23px;font-size:9px}.note-mark{width:33px;height:33px;font-size:23px}.math-board{padding:23px 20px;margin:0 6px;transform:rotate(-1.5deg)}.board-top{font-size:7px;letter-spacing:1px}.board-top span:last-child{font-size:10px}.board-bottom{font-size:17px}.board-seal{width:58px;height:58px;font-size:10px}.hero-index{font-size:7px;bottom:19px;letter-spacing:1.15px}.principles{grid-template-columns:1fr;gap:19px;padding-block:49px}.section-number{font-size:9px;letter-spacing:1.4px}h2{font-size:34px;letter-spacing:-1px;margin:16px 0 22px}.principle-list h3{font-size:18px}.principle-list p{font-size:12px}.principle-list article{gap:20px;margin-bottom:20px;padding-bottom:20px}.teachers-section{padding-block:48px 40px}.section-heading{display:block}.section-heading>p{max-width:330px;margin:0 0 25px;font-size:12px}.filters{gap:8px;margin-bottom:24px}.filter{padding:9px 12px;font-size:10px}.teachers-grid{grid-template-columns:1fr;gap:25px}.portrait{height:230px}.portrait-initials{font-size:105px}.portrait-formula{font-size:28px}.portrait svg{width:200px}.portrait-label{font-size:8px}.teacher-info{padding:23px 22px 18px}.teacher-info h3{font-size:25px}.teacher-info p{font-size:13px;min-height:0;margin-bottom:22px}.teacher-footer>span{font-size:10px}.demo-note{font-size:9px}.practice{grid-template-columns:1fr;padding-block:49px;gap:23px}.practice>div>p{max-width:350px;font-size:12px}.practice-level{margin-top:17px}.problem-card{padding:24px 20px}.problem-card h3{font-size:23px}.answer-row{gap:7px}.answer-row input{font-size:11px;padding:11px}.answer-row .button{font-size:10px;gap:8px}.plan-section{padding-block:46px}.plan-grid{grid-template-columns:1fr;gap:17px}.plan-grid h2{font-size:34px}.plan-grid p{font-size:12px}.select-grid{gap:13px}.select-grid select{font-size:11px}.faq{grid-template-columns:1fr;padding-block:48px;gap:20px}.faq-items summary{font-size:13px}.faq-items p{font-size:12px}.footer{gap:22px;padding-top:27px}.footer>span{order:3;width:100%;font-size:15px}.footer>p{order:4}.footer>.brand{font-size:22px}.footer>p{font-size:8px}dialog{padding:44px 25px 30px}dialog h2{font-size:31px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}