:root{--ink:#2c343a;--navy:#2d455d;--muted:#66737d;--paper:#fff;--soft:#f5f7f8;--line:#dce2e5;--brand-green:#19b24b;--serif:"Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;--sans:"Helvetica Neue", Arial, "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;--mono:"SFMono-Regular", Consolas, "Liberation Mono", monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;margin:0;line-height:1.85}a{color:inherit;text-decoration:none}button,summary,a{-webkit-tap-highlight-color:transparent}img{max-width:100%;display:block}p,h1,h2,h3,ul,ol,dl,blockquote{margin-top:0}.skip-link{z-index:1000;border:2px solid var(--navy);background:#fff;padding:10px 18px;position:fixed;top:-100px;left:16px}.skip-link:focus{top:10px}:focus-visible{outline-offset:4px;outline:3px solid #e5a826}.site-header{z-index:100;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff0;border-bottom:1px solid #2d455d1f;height:76px;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;max-width:1280px;height:100%;margin:auto;padding:0 34px;display:flex}.brand{align-items:center;gap:12px;line-height:1;display:inline-flex}.brand-mark{color:#fff;background:var(--navy);letter-spacing:-.04em;border-radius:50%;place-items:center;width:42px;height:42px;font-size:12px;font-weight:800;display:grid}.brand-copy{flex-direction:column;gap:5px;display:flex}.brand-copy b{letter-spacing:.12em;color:var(--navy);font-size:12px}.brand-copy small{letter-spacing:.34em;color:var(--muted);font-size:9px}.desktop-nav{color:var(--navy);align-items:center;gap:26px;font-size:13px;font-weight:700;display:flex}.desktop-nav>a:not(.nav-line){border-bottom:2px solid #0000;padding:24px 0 20px}.desktop-nav>a:not(.nav-line):hover{border-color:currentColor}.nav-line{color:#fff;background:var(--brand-green);border-radius:999px;padding:10px 17px}.site-footer{color:#edf3f6;background:#263744;padding:78px max(28px,50% - 560px) 26px}.footer-grid{grid-template-columns:1.5fr 1fr;gap:80px;display:grid}.footer-kicker{color:#a9bbc8;font-family:var(--mono);letter-spacing:.16em;font-size:11px}.site-footer h2{font-family:var(--serif);font-size:24px;font-weight:600}.site-footer address{color:#c7d2d9;flex-direction:column;font-size:14px;font-style:normal;display:flex}.site-footer nav{color:#c7d2d9;grid-template-columns:1fr 1fr;align-content:start;gap:9px 28px;font-size:13px;display:grid}.site-footer nav a:hover{color:#fff;text-underline-offset:4px;text-decoration:underline}.copyright{color:#8fa2ae;font-family:var(--mono);letter-spacing:.08em;border-top:1px solid #ffffff1f;margin:58px 0 0;padding-top:22px;font-size:10px}.seo-page{--accent:#2873a6;--accent-dark:#224d70;--accent-pale:#eaf5fb;--tint:#f5fbfe;overflow:clip}.theme-math{--accent:#176b59;--accent-dark:#173f3b;--accent-pale:#e7f4ef;--tint:#f3f8f6}.theme-exam{--accent:#bf9131;--accent-dark:#172c49;--accent-pale:#f7efd8;--tint:#f7f8fa}.breadcrumbs{color:#78858d;max-width:1280px;margin:auto;padding:14px 34px 0;font-size:11px}.breadcrumbs ol{gap:9px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li{gap:9px;display:flex}.breadcrumbs a:hover{text-decoration:underline}.hero{grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);align-items:center;gap:7vw;max-width:1280px;min-height:calc(100svh - 100px);margin:auto;padding:72px 34px 96px;display:grid}.hero-copy{max-width:680px}.eyebrow{color:var(--accent,var(--navy));font-family:var(--mono);letter-spacing:.18em;text-transform:uppercase;margin-bottom:20px;font-size:11px;font-weight:700}.hero h1{color:var(--accent-dark);font-family:var(--serif);letter-spacing:.015em;margin-bottom:34px;font-size:clamp(40px,5vw,70px);font-weight:500;line-height:1.34}.hero-statement{color:var(--accent-dark);margin-bottom:15px;font-size:clamp(20px,2.2vw,29px);line-height:1.7}.hero-body{color:#4d5c66;max-width:610px;margin-bottom:30px;font-size:16px}.hero-body b{color:var(--accent-dark)}.hero-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.cta{border:1px solid var(--accent);border-radius:3px;justify-content:space-between;align-items:center;gap:30px;min-height:54px;padding:14px 19px 14px 22px;font-size:14px;font-weight:700;line-height:1.4;transition:transform .2s,background .2s,color .2s;display:inline-flex}.cta:hover{transform:translateY(-2px)}.cta-primary{color:#fff;background:var(--accent)}.cta-secondary{color:var(--accent-dark);border-color:color-mix(in srgb, var(--accent) 45%, white);background:0 0}.cta-secondary:hover{color:#fff;background:var(--accent-dark);border-color:var(--accent-dark)}.cta-text{min-height:auto;color:var(--accent-dark);border:0;border-bottom:1px solid;border-radius:0;padding:7px 0}.hero-note,.micro-copy{color:#75818a;margin:12px 0 0;font-size:12px}.english-board{background:linear-gradient(90deg,#0000 44px,#d6584c33 45px,#0000 46px),repeating-linear-gradient(#fff 0 47px,#dce9f2 48px 49px);border:1px solid #dce5ea;width:min(100%,520px);min-height:500px;padding:52px 44px 40px;position:relative;transform:rotate(1.2deg);box-shadow:0 28px 60px #193f5b1f}.english-board:before{content:"";background:#e4d8b5ad;width:130px;height:32px;position:absolute;top:-15px;left:50%;transform:translate(-50%)rotate(-2deg)}.board-label{color:#6b7d88;font-family:var(--mono);letter-spacing:.13em;justify-content:space-between;margin-bottom:48px;font-size:11px;display:flex}.sentence-row{color:#263d51;align-items:center;gap:10px;min-height:66px;font-family:Georgia,serif;font-size:clamp(20px,2.2vw,28px);display:flex}.sentence-row span{position:relative}.needs-look:after{content:"";z-index:-1;background:#ffc63d8c;height:7px;position:absolute;bottom:-4px;left:-2px;right:-2px;transform:rotate(-2deg)}.board-question{color:var(--accent-dark);align-items:center;gap:14px;margin-top:24px;display:flex}.board-question>span{border:1px solid var(--accent);width:42px;height:42px;font-family:var(--serif);border-radius:50%;place-items:center;font-size:24px;display:grid}.board-question p{margin:0;font-weight:700;line-height:1.3}.board-question small{color:#697a84;margin-top:7px;font-weight:400;display:block}.section{max-width:1180px;margin:0 auto;padding:116px 34px}.section-head{max-width:870px;margin-bottom:58px}.section-head.narrow{max-width:740px}.section h2,.final-cta h2{color:var(--accent-dark);font-family:var(--serif);letter-spacing:.02em;margin-bottom:26px;font-size:clamp(31px,4vw,50px);font-weight:500;line-height:1.45}.section-head>p{color:#5f6c75;max-width:720px;font-size:16px}.recognition{padding-top:140px}.observation-lines{border-top:1px solid var(--line);max-width:900px}.observation-lines p{border-bottom:1px solid var(--line);grid-template-columns:70px 1fr;margin:0;padding:25px 0;font-size:16px;display:grid}.observation-lines span{color:var(--accent);font-family:var(--mono);letter-spacing:.12em;font-size:11px}.large-thought{max-width:870px;color:var(--accent-dark);font-family:var(--serif);letter-spacing:.03em;margin:140px 0 0 auto;font-size:clamp(38px,6vw,76px);line-height:1.48}.large-thought em{color:var(--accent);font-style:normal}.know-use{background:var(--tint);max-width:none;padding-left:max(34px,50% - 556px);padding-right:max(34px,50% - 556px)}.split-capabilities{grid-template-columns:1fr 70px 1fr;align-items:stretch;display:grid}.split-capabilities article{border:1px solid color-mix(in srgb,var(--accent) 18%,#d9dfe2);background:#fff;min-height:410px;padding:48px}.side-label{color:var(--accent);font-family:var(--mono);letter-spacing:.16em;font-size:12px}.split-capabilities h3{color:var(--accent-dark);font-family:var(--serif);font-size:26px;font-weight:500;line-height:1.5}.split-capabilities ul{padding:0;list-style:none}.split-capabilities li{border-bottom:1px solid var(--line);padding:13px 0}.not-equal{color:var(--accent);font-family:var(--serif);place-items:center;font-size:34px;display:grid}.center-note{color:var(--accent-dark);text-align:center;font-family:var(--serif);margin:30px 0 0;font-size:19px}.layer-list{padding:0;list-style:none}.layer-list li{border-top:1px solid var(--line);grid-template-columns:90px 1fr 150px;align-items:start;gap:24px;min-height:160px;padding:31px 0;display:grid}.layer-list li:last-child{border-bottom:1px solid var(--line)}.layer-list>li>span{color:var(--accent);font-family:var(--mono);font-size:12px}.layer-list h3{color:var(--accent-dark);font-family:var(--serif);margin:0 0 10px;font-size:27px;font-weight:500}.layer-list p{color:#5d6971;margin:0}.layer-list>li>b{color:color-mix(in srgb,var(--accent) 35%,white);font-family:var(--mono);letter-spacing:.15em;text-align:right;font-size:12px}.why-section{background:var(--accent-dark);color:#dce8ee;max-width:none;padding-left:max(34px,50% - 556px);padding-right:max(34px,50% - 556px)}.why-grid{grid-template-columns:.85fr 1.15fr;gap:8vw;display:grid}.why-section .eyebrow{color:color-mix(in srgb,var(--accent) 65%,white)}.why-section h2{color:#fff}.why-copy p{color:#cbd8de;margin-bottom:24px}.why-copy .why-highlight{color:#fff;font-family:var(--serif);border-top:1px solid #fff3;padding:22px 0 0;font-size:21px}.case-notes{max-width:1040px}.case-note-list{border-top:1px solid var(--accent-dark)}.case-note-list article{border-bottom:1px solid var(--line);grid-template-columns:.7fr 1.3fr;gap:55px;padding:42px 0;display:grid}.case-expression{background:var(--tint);border-left:3px solid var(--accent);flex-direction:column;justify-content:space-between;min-height:170px;padding:25px;display:flex}.case-expression span{color:var(--accent);font-family:var(--mono);font-size:10px}.case-expression p{color:var(--accent-dark);font-family:Georgia, var(--serif);margin:0;font-size:23px;line-height:1.6}.case-reading p{color:#596770;margin-bottom:16px}.case-reading p:last-child{margin-bottom:0}.case-reading b{color:var(--accent);font-family:var(--mono);letter-spacing:.08em;margin-bottom:3px;font-size:10px;display:block}.case-reading h3{color:var(--accent-dark);font-family:var(--serif);margin-bottom:14px;font-size:23px;font-weight:500;line-height:1.55}.case-conclusion{border-left:2px solid var(--accent);max-width:780px;color:var(--accent-dark);font-family:var(--serif);margin:42px 0 0 auto;padding-left:28px;font-size:18px}.math-expression p{font-family:var(--mono);font-size:18px}.diagnosis-feature{background:var(--accent-pale);grid-template-columns:.8fr 1.2fr;gap:70px;margin-top:80px;padding:90px 70px;display:grid}.diagnosis-number{color:#fff;font-family:var(--serif);text-shadow:-1px -1px 0 var(--accent),1px -1px 0 var(--accent),-1px 1px 0 var(--accent),1px 1px 0 var(--accent);opacity:.42;align-self:center;font-size:clamp(180px,25vw,330px);font-weight:700;line-height:.8}.diagnosis-copy{align-self:center}.diagnosis-copy ul{border-top:1px solid color-mix(in srgb,var(--accent) 22%,white);grid-template-columns:1fr 1fr;gap:8px 30px;padding:20px 0 12px;list-style:none;display:grid}.diagnosis-copy li:before{content:"—";color:var(--accent);margin-right:10px}.inline-actions{flex-wrap:wrap;align-items:center;gap:18px;margin-top:28px;display:flex}.progress-section{max-width:none;padding-left:max(34px,50% - 556px);padding-right:max(34px,50% - 556px)}.progress-rail{grid-template-columns:repeat(5,1fr);padding:0;list-style:none;display:grid}.progress-rail li{border-top:2px solid color-mix(in srgb,var(--accent) 30%,white);min-height:210px;padding:22px 22px 25px;position:relative}.progress-rail li:before{content:"";background:var(--accent);border-radius:50%;width:10px;height:10px;position:absolute;top:-6px;left:0}.progress-mark{width:44px;height:44px;color:var(--accent-dark);border:1px solid color-mix(in srgb,var(--accent) 38%,white);border-radius:50%;place-items:center;margin-bottom:28px;font-size:20px;display:grid}.progress-no{color:var(--accent);font-family:var(--mono);font-size:10px}.progress-rail p{color:#53616a;margin:7px 0 0;line-height:1.65}.progress-rail .is-finish{background:var(--accent-pale)}.progress-rail .is-finish .progress-mark{color:#fff;background:var(--accent)}.progress-note{max-width:700px;color:var(--accent-dark);font-family:var(--serif);margin:38px 0 0 auto;font-size:20px}.self-check{max-width:900px}.question-stack{border-top:1px solid var(--accent)}.question-stack p{border-bottom:1px solid var(--line);color:var(--accent-dark);font-family:var(--serif);gap:35px;margin:0;padding:23px 0;font-size:20px;display:flex}.question-stack span{color:var(--accent);font-family:var(--mono);font-size:11px}.self-check-note{color:#66737b;margin:30px 0 0;padding-left:86px}.service-branches{background:var(--tint);max-width:none;padding-left:max(34px,50% - 556px);padding-right:max(34px,50% - 556px)}.branch-grid{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid}.branch-grid article{border-right:1px solid var(--line);min-height:330px;padding:34px}.branch-grid article:last-child{border-right:0}.branch-grid article>span{color:var(--accent);font-family:var(--mono);font-size:11px}.branch-grid article>p{color:#69767e;min-height:58px;margin:45px 0 5px;font-size:13px}.branch-grid h3{min-height:76px;color:var(--accent-dark);font-family:var(--serif);font-size:24px;font-weight:500}.two-branches{grid-template-columns:repeat(2,1fr)}.intent-section{grid-template-columns:.65fr 1.35fr;align-items:center;gap:70px;max-width:1112px;display:grid}.intent-number{color:var(--accent-pale);font-family:var(--serif);letter-spacing:-.08em;font-size:clamp(90px,16vw,210px);font-weight:700}.intent-copy p{color:#59666f}.intent-copy .intent-small{border-top:1px solid var(--line);color:var(--accent-dark);font-family:var(--serif);margin-top:32px;padding-top:24px;font-size:19px}.related-section{padding-top:60px}.related-links{border-top:1px solid var(--line);grid-template-columns:1fr 1fr;display:grid}.related-links a{border-bottom:1px solid var(--line);min-height:190px;padding:30px 70px 30px 0;position:relative}.related-links a:nth-child(odd){border-right:1px solid var(--line);padding-right:90px}.related-links a:nth-child(2n){padding-left:50px}.related-links span{color:var(--accent);font-family:var(--mono);letter-spacing:.14em;font-size:11px}.related-links p{color:var(--accent-dark);font-family:var(--serif);margin:35px 0 0;font-size:19px}.related-links b{color:var(--accent);position:absolute;bottom:28px;right:24px}.faq-section{max-width:930px}.faq-list{border-top:1px solid var(--accent-dark)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{color:var(--accent-dark);cursor:pointer;gap:26px;padding:24px 48px 24px 0;font-size:16px;font-weight:700;list-style:none;display:flex;position:relative}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";color:var(--accent);font-family:var(--serif);font-size:26px;font-weight:400;position:absolute;top:20px;right:6px}.faq-list details[open] summary:after{content:"−"}.faq-list summary span{color:var(--accent);font-family:var(--mono);flex:0 0 35px;font-size:11px}.faq-answer{color:#5c6972;padding:0 55px 25px 61px}.faq-answer p{margin:0}.classroom{background:var(--tint);grid-template-columns:1fr 1fr;gap:8vw;max-width:none;padding-left:max(34px,50% - 556px);padding-right:max(34px,50% - 556px);display:grid}.classroom>div>p:last-child{color:#5e6a72;max-width:530px}.classroom dl{border-top:1px solid var(--accent-dark);margin:0}.classroom dl div{border-bottom:1px solid var(--line);grid-template-columns:100px 1fr;padding:18px 0;display:grid}.classroom dt{color:var(--accent);font-family:var(--mono);font-size:11px}.classroom dd{margin:0}.final-cta{color:#eaf0f4;background:var(--accent-dark);text-align:center;max-width:none;padding:120px max(34px,50% - 450px)}.final-cta .eyebrow{color:color-mix(in srgb,var(--accent) 65%,white)}.final-cta h2{color:#fff}.final-cta>p{color:#c8d4dc;margin-bottom:34px}.final-cta .hero-actions{justify-content:center}.final-cta .cta-primary{color:var(--accent-dark);background:#fff;border-color:#fff}.final-cta .cta-secondary{color:#fff;border-color:#ffffff73}.sticky-cta{display:none}.math-process-preview{color:#e5f1ec;background:#173f3b;width:min(100%,520px);min-height:500px;padding:45px;position:relative;overflow:hidden}.math-process-preview:before{content:"x y";color:#ffffff0a;font-family:var(--serif);font-size:220px;position:absolute;top:-80px;right:-30px}.math-preview-copy{position:relative}.math-preview-copy span{color:#91b9ac;font-family:var(--mono);letter-spacing:.15em;font-size:10px}.math-preview-copy p{font-family:var(--serif);margin:10px 0 45px;font-size:28px;line-height:1.6}.math-preview-grid{border-top:1px solid #ffffff40;border-left:1px solid #ffffff40;grid-template-columns:1fr 60px 1.4fr;display:grid;position:relative}.math-preview-grid span,.math-preview-grid b{text-align:center;border-bottom:1px solid #ffffff40;border-right:1px solid #ffffff40;padding:12px 8px}.math-preview-grid span{color:#91b9ac;font-family:var(--mono);font-size:9px}.math-preview-grid b{font-family:var(--mono);font-size:15px}.math-preview-note{color:#b8d0c8;margin:28px 0 0;font-size:12px}.math-symptoms{background:var(--line);border:1px solid var(--line);grid-template-columns:1fr 1fr;gap:1px;display:grid}.math-symptoms article{background:#fff;min-height:180px;padding:30px}.math-symptoms span{color:var(--accent);font-family:var(--mono);font-size:11px}.math-symptoms p{color:var(--accent-dark);margin:28px 0 0;font-size:17px}.thinking-flow{background:var(--tint);max-width:none;padding-left:max(34px,50% - 556px);padding-right:max(34px,50% - 556px)}.math-flow{max-width:900px;margin:auto;padding:0;list-style:none}.math-flow li{border-top:1px solid color-mix(in srgb,var(--accent) 25%,white);background:#fff;grid-template-columns:80px 1fr;min-height:145px;padding:30px 35px;display:grid;position:relative}.math-flow li:after{content:"↓";z-index:2;width:28px;height:28px;color:var(--accent);background:var(--tint);border-radius:50%;place-items:center;display:grid;position:absolute;bottom:-20px;left:34px}.math-flow li:last-child:after{display:none}.math-flow>li>span{color:var(--accent);font-family:var(--mono);font-size:11px}.math-flow b{color:#8a989f;font-family:var(--mono);letter-spacing:.16em;font-size:9px}.math-flow h3{color:var(--accent-dark);font-family:var(--serif);margin:5px 0 4px;font-size:24px;font-weight:500}.math-flow p{color:#607078;margin:0}.math-flow .is-calculation{border:2px solid var(--accent);margin:18px -24px;box-shadow:0 15px 35px #176b591a}.math-flow .is-calculation:after{bottom:-29px}.math-flow em{color:var(--accent);font-size:11px;font-style:normal;position:absolute;top:22px;right:22px}.math-columns{grid-template-columns:1fr 1fr;gap:30px;display:grid}.math-columns article{border-top:4px solid var(--accent);background:var(--tint);padding:40px}.math-columns article>span{color:var(--accent);font-family:var(--mono);letter-spacing:.14em;font-size:10px}.math-columns h3{color:var(--accent-dark);font-family:var(--serif);margin:25px 0;font-size:23px;font-weight:500}.math-columns ul{padding:0;list-style:none}.math-columns li{border-bottom:1px solid var(--line);padding:11px 0}.math-comparison blockquote{border-left:2px solid var(--accent);max-width:850px;color:var(--accent-dark);font-family:var(--serif);margin:60px auto 0;padding:0 0 0 35px;font-size:22px;line-height:1.9}.word-problem{background:var(--accent-dark);color:#dce9e5;max-width:none;padding-left:max(34px,50% - 556px);padding-right:max(34px,50% - 556px)}.word-problem h2{color:#fff}.word-problem .eyebrow{color:#8bc3b5}.word-problem-intro{max-width:760px}.problem-paper{color:#253d39;background:#fff;margin:55px 0 30px;padding:40px;box-shadow:12px 12px #ffffff14}.problem-no{color:var(--accent);font-family:var(--mono);letter-spacing:.14em;font-size:10px}.problem-paper>p:last-child{margin:0;font-size:18px}.translation-board{grid-template-columns:1fr 80px 1fr;align-items:center;display:grid}.translation-board>div{border:1px solid #ffffff40;grid-template-columns:1fr 1fr;display:grid}.translation-board span,.translation-board b{text-align:center;padding:18px}.translation-board>div>span{color:#94b9b0;font-family:var(--mono);border-bottom:1px solid #ffffff40;grid-column:1/-1;font-size:10px}.translation-board b+b{border-left:1px solid #ffffff40}.translation-arrow{color:#8bc3b5;font-size:30px}.word-problem .center-note{color:#d5e7e2}.topic-diagram{grid-template-columns:1fr 1fr;gap:40px;display:grid}.topic-diagram article{border:1px solid var(--line);padding:44px}.topic-diagram article>span{color:var(--accent);font-family:var(--mono);letter-spacing:.15em;font-size:10px}.topic-diagram h3{color:var(--accent-dark);font-family:var(--serif);font-size:28px;font-weight:500}.function-ring{width:260px;height:180px;margin:35px auto;position:relative}.function-ring:before{content:"";border:1px solid var(--accent);border-radius:50%;position:absolute;inset:22px 45px}.function-ring b{width:70px;height:70px;color:var(--accent-dark);background:var(--accent-pale);border-radius:50%;place-items:center;display:grid;position:absolute}.function-ring b:first-child{top:55px;left:0}.function-ring b:nth-child(2){top:55px;right:0}.function-ring b:nth-child(3){top:0;left:95px}.geometry-demo{border-left:1px solid var(--accent);border-bottom:1px solid var(--accent);width:240px;height:180px;margin:35px auto;position:relative}.geometry-demo:before{content:"";background:var(--accent);transform-origin:0;width:255px;height:1px;position:absolute;bottom:0;left:0;transform:rotate(-38deg)}.geometry-demo i{border-top:1px solid var(--accent);border-right:1px solid var(--accent);width:28px;height:28px;position:absolute;bottom:0;left:0}.geometry-demo b{color:var(--accent-dark);font-family:var(--mono);position:absolute}.geometry-demo b:first-of-type{bottom:-32px;left:100px}.geometry-demo b:nth-of-type(2){bottom:2px;left:32px}.geometry-demo b:nth-of-type(3){top:55px;left:135px}.diagnosis-roadmap{grid-template-columns:1.15fr .85fr;align-items:center;gap:80px;max-width:1112px;display:grid}.diagnostic-parts{flex-wrap:wrap;align-content:center;gap:10px;display:flex}.diagnostic-parts span{width:calc(50% - 5px);min-height:85px;color:var(--accent-dark);border:1px solid var(--line);flex-direction:column;justify-content:space-between;padding:14px;display:flex}.diagnostic-parts b{color:var(--accent);font-family:var(--mono);font-size:10px}.theme-exam .hero{background:linear-gradient(135deg,#fff 0 58%,#f4f6f8 58%);max-width:none;padding-left:max(34px,50% - 606px);padding-right:max(34px,50% - 606px)}.exam-hero h1{font-size:clamp(38px,4.8vw,65px)}.exam-map{color:#e9eef3;background:var(--accent-dark);min-height:530px;padding:60px 35px 35px 85px;position:relative}.exam-map-line{background:#ffffff4d;width:1px;position:absolute;top:70px;bottom:180px;left:50px}.exam-map>div:not(.exam-map-line){grid-template-columns:45px 1fr;align-content:start;min-height:110px;display:grid;position:relative}.exam-map>div:not(.exam-map-line):before{content:"";background:#fff;border-radius:50%;width:11px;height:11px;position:absolute;top:7px;left:-40px;box-shadow:0 0 0 6px #ffffff1a}.exam-map>div.is-goal:before{background:var(--accent);box-shadow:0 0 0 6px #bf91312e}.exam-map span{color:#9babb8;font-family:var(--mono);font-size:10px}.exam-map b{font-family:var(--serif);font-size:24px;font-weight:500}.exam-map small{color:#aebbc5;grid-column:2}.exam-map>p{color:#fff;font-family:var(--serif);border-top:1px solid #fff3;margin:0;padding-top:25px;font-size:18px;position:absolute;bottom:30px;left:35px;right:35px}.test-comparison{background:var(--tint);max-width:none;padding-left:max(34px,50% - 556px);padding-right:max(34px,50% - 556px)}.comparison-table{border-top:2px solid var(--accent-dark)}.comparison-table>div{border-bottom:1px solid #d8dee3;grid-template-columns:150px 1fr 1fr;display:grid}.comparison-table span,.comparison-table b,.comparison-table p{margin:0;padding:20px 24px}.comparison-table span{color:var(--accent);font-family:var(--mono);font-size:10px}.comparison-table b{color:var(--accent-dark);font-family:var(--serif);font-size:19px}.comparison-table p{color:#586670;border-left:1px solid #d8dee3}.comparison-head{background:var(--accent-dark);color:#fff}.comparison-head span,.comparison-head b{color:#fff}.exam-shift{grid-template-columns:.9fr 1.1fr;gap:80px;display:grid}.exam-shift ol{margin:0;padding:0;list-style:none}.exam-shift li{border-top:1px solid var(--line);grid-template-columns:65px 1fr;padding:28px 0;display:grid}.exam-shift li:last-child{border-bottom:1px solid var(--line)}.exam-shift li>span{color:var(--accent);font-family:var(--mono);font-size:10px}.exam-shift h3{color:var(--accent-dark);font-family:var(--serif);margin:0 0 7px;font-size:25px;font-weight:500}.exam-shift li p{color:#5d6a72;margin:0}.subject-focus{background:var(--accent-dark);color:#dce4ea;max-width:none;padding-left:max(34px,50% - 556px);padding-right:max(34px,50% - 556px)}.subject-focus h2{color:#fff}.subject-focus .eyebrow{color:#dbbd75}.subject-split{border:1px solid #fff3;grid-template-columns:1fr 1fr;display:grid}.subject-split article{min-height:480px;padding:45px}.subject-split article+article{border-left:1px solid #fff3}.subject-split article>span{color:#d7b25a;font-family:var(--mono);letter-spacing:.15em;font-size:10px}.subject-split h3{color:#fff;font-family:var(--serif);font-size:32px;font-weight:500}.subject-split ul{min-height:245px;padding:0;list-style:none}.subject-split li{border-bottom:1px solid #ffffff1f;padding:10px 0}.subject-split a{color:#fff;border-bottom:1px solid #d7b25a;gap:25px;margin:14px 18px 0 0;font-weight:700;display:inline-flex}.exam-roadmap ol{grid-template-columns:repeat(4,1fr);margin:0;padding:0;list-style:none;display:grid}.exam-roadmap li{border-top:1px solid var(--accent-dark);border-bottom:1px solid var(--line);border-right:1px solid var(--line);min-height:320px;padding:28px}.exam-roadmap li:last-child{border-right:0}.exam-roadmap li span{color:var(--accent);font-family:var(--mono);letter-spacing:.15em;font-size:10px}.exam-roadmap h3{color:var(--accent-dark);font-family:var(--serif);margin:75px 0 14px;font-size:22px;font-weight:500}.exam-roadmap li p{color:#64717a;font-size:14px}.loss-grid{border-top:1px solid var(--accent-dark);grid-template-columns:1fr 1fr;display:grid}.loss-grid article{border-bottom:1px solid var(--line);min-height:360px;padding:34px 38px 34px 0}.loss-grid article:nth-child(odd){border-right:1px solid var(--line)}.loss-grid article:nth-child(2n){padding-left:38px}.loss-grid span{color:var(--accent);font-family:var(--mono);letter-spacing:.12em;font-size:10px}.loss-grid h3{color:var(--accent-dark);font-family:var(--serif);margin:45px 0 15px;font-size:23px;font-weight:500}.loss-grid p{color:#5f6c75;font-size:14px}.loss-grid p b{color:var(--accent-dark)}.loss-summary{color:#d9e3ea;background:var(--accent-dark);max-width:770px;margin:55px 0 0 auto;padding:38px}.loss-summary h3{color:#fff;font-family:var(--serif);font-size:24px;font-weight:500}.loss-summary p:last-child{margin-bottom:0}.seminar-feature{grid-template-columns:.75fr 1.25fr;align-items:center;gap:80px;max-width:1112px;display:grid}.seminar-badge{aspect-ratio:1;color:#fff;background:var(--accent-dark);box-shadow:inset 0 0 0 1px #d5b76e,inset 0 0 0 14px var(--accent-dark);outline-offset:-10px;border-radius:50%;outline:1px solid #d5b76e;flex-direction:column;justify-content:center;align-items:center;display:flex}.seminar-badge span{font-family:var(--serif);font-size:clamp(55px,9vw,100px);line-height:1}.seminar-badge b{color:#d9ba6e;font-family:var(--mono);letter-spacing:.25em}.seminar-copy dl{border-top:1px solid var(--line)}.seminar-copy dl div{border-bottom:1px solid var(--line);grid-template-columns:90px 1fr;padding:13px 0;display:grid}.seminar-copy dt{color:var(--accent);font-family:var(--mono);font-size:10px}.seminar-copy dd{margin:0}.seminar-note{color:#6c7880;font-size:12px}.exam-checks{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.exam-checks article{background:var(--tint);border-top:3px solid var(--accent);min-height:260px;padding:30px}.exam-checks span{color:var(--accent);font-family:var(--mono);font-size:10px}.exam-checks h3{color:var(--accent-dark);font-family:var(--serif);margin:45px 0 14px;font-size:22px;font-weight:500}.exam-checks p{color:#606e77;font-size:14px}.guide-index{background:#f6f8f9;min-height:calc(100svh - 76px);padding:100px 34px}.guide-index-inner{max-width:1112px;margin:auto}.guide-index h1{color:var(--navy);font-family:var(--serif);font-size:clamp(43px,6vw,76px);font-weight:500;line-height:1.45}.index-lead{color:#5f6d76;max-width:680px;margin-bottom:60px}.guide-index-links{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid}.guide-index-links a{border-right:1px solid var(--line);background:#fff;min-height:310px;padding:30px}.guide-index-links a:last-child{border-right:0}.guide-index-links span{color:#74838d;font-family:var(--mono);font-size:10px}.guide-index-links h2{color:var(--navy);font-family:var(--serif);margin:65px 0 10px;font-size:27px;font-weight:500}.guide-index-links p{color:#65727a;min-height:70px;font-size:13px}.guide-index-links b{color:var(--navy);font-size:13px}@media (max-width:900px){.desktop-nav a:not(.nav-line){display:none}.hero{grid-template-columns:1fr;gap:60px;min-height:auto;padding-top:55px}.hero-copy{max-width:none}.english-board,.math-process-preview,.exam-map{margin:auto}.split-capabilities{grid-template-columns:1fr;gap:0}.not-equal{height:65px}.why-grid,.intent-section,.classroom,.diagnosis-feature,.diagnosis-roadmap,.seminar-feature,.exam-shift,.progress-rail{grid-template-columns:1fr}.progress-rail li{border-top:0;border-left:2px solid color-mix(in srgb,var(--accent) 30%,white);grid-template-columns:55px 40px 1fr;align-items:center;min-height:110px;display:grid}.progress-rail li:before{top:50%;left:-6px}.progress-mark,.progress-rail p{margin:0}.layer-list li{grid-template-columns:70px 1fr}.layer-list>li>b{display:none}.branch-grid{grid-template-columns:1fr}.branch-grid article{border-right:0;border-bottom:1px solid var(--line)}.branch-grid article:last-child{border-bottom:0}.topic-diagram,.math-columns,.subject-split,.math-symptoms,.exam-checks{grid-template-columns:1fr}.case-note-list article{grid-template-columns:1fr;gap:25px}.subject-split article+article{border-top:1px solid #fff3;border-left:0}.translation-board{grid-template-columns:1fr}.translation-arrow{transform:rotate(90deg)}.exam-roadmap ol{grid-template-columns:1fr 1fr}.loss-grid{grid-template-columns:1fr}.loss-grid article:nth-child(odd){border-right:0}.loss-grid article:nth-child(2n){padding-left:0}.guide-index-links{grid-template-columns:1fr}.guide-index-links a{border-right:0;border-bottom:1px solid var(--line)}.footer-grid{grid-template-columns:1fr;gap:45px}}@media (max-width:640px){body{padding-bottom:64px}.site-header{height:64px}.header-inner{padding:0 18px}.brand-mark{width:36px;height:36px}.brand-copy b{font-size:10px}.brand-copy small{font-size:8px}.nav-line{padding:8px 13px;font-size:11px}.breadcrumbs{white-space:nowrap;text-overflow:ellipsis;padding:10px 20px 0;overflow:hidden}.hero{gap:48px;padding:44px 20px 80px}.hero h1{margin-bottom:27px;font-size:clamp(35px,10vw,50px)}.hero-statement{font-size:20px}.hero-body{font-size:15px}.hero-actions{flex-direction:column;align-items:stretch}.cta{width:100%}.english-board{min-height:410px;padding:43px 23px 25px;transform:none}.sentence-row{min-height:56px;font-size:20px}.board-question{margin-top:14px}.math-process-preview{min-height:420px;padding:32px 23px}.math-preview-copy p{margin-bottom:30px;font-size:23px}.exam-map{min-height:500px;padding-left:65px}.section{padding:88px 20px}.section h2,.final-cta h2{font-size:clamp(29px,8vw,40px)}.section-head{margin-bottom:42px}.recognition{padding-top:95px}.observation-lines p{grid-template-columns:45px 1fr;padding:21px 0;font-size:14px}.large-thought{margin-top:95px;font-size:37px}.know-use,.thinking-flow,.word-problem,.test-comparison,.subject-focus,.service-branches,.progress-section,.classroom{padding-left:20px;padding-right:20px}.split-capabilities article{min-height:auto;padding:30px 24px}.layer-list li{grid-template-columns:45px 1fr;gap:10px}.layer-list h3{font-size:23px}.why-section{padding-left:20px;padding-right:20px}.diagnosis-feature{gap:30px;margin-top:30px;padding:70px 24px}.diagnosis-number{font-size:160px}.diagnosis-copy ul{grid-template-columns:1fr}.progress-rail li{grid-template-columns:50px 35px 1fr;padding:19px 15px}.progress-mark{width:39px;height:39px}.progress-rail p{font-size:13px}.progress-note{font-size:17px}.question-stack p{gap:20px;font-size:17px}.self-check-note{padding-left:0}.branch-grid article{min-height:280px;padding:27px 8px}.case-note-list article{padding:30px 0}.case-expression{min-height:145px}.case-conclusion{font-size:16px}.intent-section{gap:10px}.intent-number{font-size:100px}.related-links{grid-template-columns:1fr}.related-links a,.related-links a:nth-child(odd),.related-links a:nth-child(2n){border-right:0;min-height:155px;padding:25px 55px 25px 0}.related-links p{margin-top:22px;font-size:17px}.faq-list summary{gap:14px;padding-right:38px;font-size:14px}.faq-answer{padding-left:49px;padding-right:5px;font-size:14px}.classroom dl div{grid-template-columns:82px 1fr}.final-cta{padding:88px 20px}.math-symptoms article{min-height:150px;padding:24px}.math-flow li{grid-template-columns:45px 1fr;min-height:130px;padding:24px 18px}.math-flow .is-calculation{margin-left:-7px;margin-right:-7px}.math-flow em{grid-column:2;margin-top:8px;position:static}.math-columns article{padding:30px 23px}.math-comparison blockquote{margin-top:40px;padding-left:20px;font-size:18px}.problem-paper{padding:25px}.problem-paper>p:last-child{font-size:15px}.translation-board>div{grid-template-columns:1fr}.translation-board b+b{border-top:1px solid #ffffff40;border-left:0}.topic-diagram article{padding:30px 20px}.function-ring,.geometry-demo{transform-origin:50%;transform:scale(.82)}.diagnostic-parts span{min-height:75px}.theme-exam .hero{background:linear-gradient(155deg,#fff 0 64%,#f4f6f8 64%);padding-left:20px;padding-right:20px}.comparison-table>div{grid-template-columns:75px 1fr 1fr}.comparison-table span,.comparison-table b,.comparison-table p{padding:13px 10px;font-size:12px;line-height:1.55}.comparison-table b{font-size:14px}.exam-roadmap ol{grid-template-columns:1fr}.exam-roadmap li{border-right:0;min-height:240px}.exam-roadmap h3{margin-top:45px}.loss-grid article{min-height:auto;padding:30px 0}.loss-grid h3{margin-top:30px}.loss-summary{padding:26px 22px}.subject-split article{min-height:auto;padding:30px 22px}.subject-split ul{min-height:auto}.seminar-badge{width:230px;margin:auto}.exam-checks article{min-height:220px}.footer-grid{gap:35px}.site-footer{padding:65px 20px 25px}.site-footer nav{grid-template-columns:1fr}.sticky-cta{z-index:120;border-top:1px solid var(--line);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff5;grid-template-columns:1fr 1fr;gap:1px;height:64px;padding:5px;display:grid;position:fixed;bottom:0;left:0;right:0}.sticky-cta a{color:#fff;background:var(--accent-dark);border-radius:2px;justify-content:space-between;align-items:center;padding:8px 13px;font-size:12px;font-weight:700;display:flex}.sticky-cta a:first-child{background:var(--accent)}.guide-index{padding:70px 20px}.guide-index-links a{min-height:250px;padding:25px}.guide-index-links h2{margin-top:40px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}@media print{.site-header,.site-footer,.sticky-cta,.hero-actions{display:none!important}body{padding:0}.section,.hero{break-inside:avoid;min-height:auto;padding:40px 20px}}