@font-face{font-family:Golos;src:url('assets/fonts/golos-text-cyrillic.woff2') format('woff2');font-weight:100 900;font-display:swap;unicode-range:U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:Golos;src:url('assets/fonts/golos-text-latin.woff2') format('woff2');font-weight:100 900;font-display:swap}
:root{font-family:Golos,Arial,sans-serif;font-size:16px;color-scheme:light;--bg:#f5f4ed;--paper:#fffef8;--ink:#183f35;--muted:#52665d;--accent:#204e3e;--line:#d1d8cc;--wash:#e7ece1;--radius:16px;--body-leading:1.65}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}body:has(dialog[open]){overflow:hidden}a{color:inherit;text-underline-offset:4px}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{cursor:default;opacity:.5}a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid #ce852b;outline-offset:5px}button{border:0}h1,h2,h3,p,figure{margin:0}h1,h2,h3{text-wrap:balance}p{line-height:var(--body-leading)}img{display:block;max-width:100%}svg{display:block}section{scroll-margin-top:24px}.wrap{width:min(1120px,calc(100% - 64px));margin-inline:auto}.small{font-size:14px;color:var(--muted);line-height:1.55}.skip-link{position:fixed;left:16px;top:-80px;z-index:50;background:#fff;padding:16px;color:#163f35}.skip-link:focus{top:16px}
.design-picker{background:#fff;color:#424840;border-bottom:1px solid #e2e5df;font-size:14px}.picker-inner{max-width:1184px;padding:8px 32px;margin:auto;display:flex;align-items:center;gap:8px}.picker-label{margin-right:14px;font-size:12px;color:#71786d}.design-picker a{text-decoration:none;min-height:44px;display:flex;align-items:center;justify-content:center;gap:8px;padding:8px 18px;border-radius:8px;white-space:nowrap}.design-picker a[aria-current=page]{background:#173f34;color:#fff}.design-picker a span{font-size:12px;opacity:.65}.design-picker .original-link{margin-left:auto;text-decoration:underline;font-size:12px}.masthead{height:88px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:650;font-size:18px;letter-spacing:-.6px}.brand-symbol{font:italic 28px Georgia,serif;letter-spacing:-3px;width:33px}.brand-symbol span{font-size:17px;vertical-align:super;margin-left:2px}.menu-button{display:flex;align-items:center;gap:12px;background:none;min-height:44px;font-size:14px;padding:8px 0 8px 12px}.menu-button span{font-size:20px;line-height:1}
.hero{padding:40px 0 64px}.eyebrow{font-size:14px;letter-spacing:.02em;font-weight:500;margin-bottom:24px}.hero h1{font-size:clamp(48px,5.7vw,76px);line-height:1.04;letter-spacing:-.06em;font-weight:550}.hero-copy{max-width:570px}.hero-lead{font-size:18px;max-width:41ch;margin-top:24px}.hero-actions{margin-top:28px;max-width:420px}.primary{background:var(--accent);color:#fff;border:1px solid var(--accent);border-radius:var(--radius);min-height:56px;padding:16px 22px;font-size:16px;font-weight:550;display:inline-flex;align-items:center;justify-content:space-between;gap:24px;text-decoration:none;transition:background .15s,transform .15s}.primary:hover{filter:brightness(1.08)}.primary:active{transform:translateY(1px)}.hero-actions .primary{width:100%}.hero-actions .small{margin-top:10px}.quick-links{display:flex;flex-wrap:wrap;gap:0 20px;margin-top:14px;font-size:14px}.quick-links a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;border-bottom:1px solid transparent}.quick-links a:hover{border-color:currentColor}.teacher-name{font-size:25px;line-height:1.17;font-weight:550;letter-spacing:-.7px}.teacher-caption{font-size:14px;line-height:1.55;margin-top:12px}.portrait{object-fit:cover;object-position:50% 27%;width:100%;height:100%}.math-writing{font-family:Georgia,'Times New Roman',serif;font-style:italic;font-weight:400;letter-spacing:0}.hero-metadata{font-size:14px;margin-top:20px}.arrow{font-family:Arial,sans-serif;font-weight:400;font-size:23px}
/* 01 — an actual dark board, paired with a clean teacher portrait. */
body[data-design=board]{--bg:#f4f3eb;--ink:#163f35;--accent:#244c3b;--paper:#fffdf6;--line:#d7dacc;background:#163f35}
[data-design=board] .masthead{color:#f5f3dd}
.board-hero{color:#f5f3dd;padding-top:28px;padding-bottom:64px;display:grid;grid-template-columns:1.1fr .9fr;gap:64px;position:relative}
.board-hero h1{font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:-.045em;font-size:clamp(52px,6.3vw,84px)}
.board-hero h1 em{font-weight:400;color:#dae6a7;display:block}.board-hero .eyebrow{color:#d0dbc8}.board-hero .hero-lead{color:#d9e3d8}.board-hero .primary{background:#e4edb8;border-color:#e4edb8;color:#193d2e}.board-hero .small{color:#c5d3bf}.board-person{display:grid;grid-template-columns:1fr;align-content:start;gap:18px;padding-top:9px}.board-photo{aspect-ratio:1.2;border-radius:100% 100% 8px 8px;overflow:hidden;background:#c7cabe;border:1px solid #c4d2aa}.board-person .portrait{object-position:50% 24%}.board-person .person-caption{display:flex;align-items:start;justify-content:space-between;gap:24px}.board-person .teacher-caption{max-width:180px;margin-top:0}.board-equation{margin-top:18px;border-top:1px solid #688171;padding-top:20px;display:flex;justify-content:space-between;align-items:center;gap:18px;color:#e4edb8}.board-equation .math-writing{font-size:29px;white-space:nowrap}.board-equation p{font-size:13px;line-height:1.5;max-width:170px;color:#c8d5c3}
[data-design=board] .page-content{background:var(--bg);width:100%;max-width:none;padding:0 max(32px,calc((100% - 1120px)/2)) 80px;border-radius:28px 28px 0 0}
[data-design=board] .footer{color:#d0dbc8;background:#163f35;padding-block:28px}
/* The complete visiting card: same facts and working links in every direction. */
.page-content{padding-bottom:70px}.section{padding-block:64px;border-top:1px solid var(--line)}.section-heading{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;margin-bottom:32px}.section-title{font-size:38px;line-height:1.12;letter-spacing:-1.8px;font-weight:550}.section-intro{max-width:48ch;color:var(--muted)}.section-label{font-size:14px;color:var(--muted);margin-bottom:12px}.section-nav{display:flex;gap:12px 32px;flex-wrap:wrap;padding-block:24px;border-bottom:1px solid var(--line);font-size:14px}.section-nav a{display:flex;align-items:center;min-height:44px;text-decoration:none;gap:8px}.section-nav a:hover{text-decoration:underline}.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px}.about-text{display:grid;gap:18px;font-size:18px;line-height:1.65}.about-facts{padding-left:28px;border-left:1px solid var(--line);display:grid;gap:22px;align-content:start}.about-facts strong{display:block;font-size:19px;font-weight:550;line-height:1.3}.about-facts span{display:block;font-size:14px;color:var(--muted);line-height:1.6;margin-top:6px}.hand-note{font:italic 28px/1.3 Georgia,serif;color:var(--accent);margin-top:28px}
.goal-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}.goal-list span{display:inline-flex;border:1px solid var(--line);padding:8px 13px;border-radius:7px;font-size:14px;line-height:1.5}.format-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.format{padding:32px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);display:flex;flex-direction:column;align-items:start}.format h3{font-size:26px;line-height:1.2;font-weight:550;letter-spacing:-.8px}.format .format-type{font-size:14px;margin-bottom:14px;color:var(--muted)}.format p{margin-top:18px}.format ul{padding-left:20px;margin:20px 0 26px;line-height:1.7}.format li+li{margin-top:8px}.text-button{background:none;text-decoration:underline;text-underline-offset:5px;padding:10px 0;min-height:44px;font-size:16px;font-weight:550;text-align:left}.format .text-button{margin-top:auto}.format:first-child{background:var(--wash)}.lesson-note{margin-top:20px;max-width:70ch;font-size:14px;color:var(--muted)}
.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}.method-steps{padding:0;margin:0;list-style:none;counter-reset:steps}.method-steps li{position:relative;padding:0 0 24px 42px;counter-increment:steps}.method-steps li:before{content:counter(steps);position:absolute;left:0;top:2px;font:italic 24px Georgia,serif;color:var(--muted)}.method-steps h3{font-size:19px;font-weight:550;margin-bottom:8px}.method-steps p{color:var(--muted)}.math-demo{align-self:start;border-radius:var(--radius);background:#173f35;color:#f7f6e8;padding:28px}.math-demo h3{font-size:19px;font-weight:500}.math-demo>p{color:#c2d5c4;font-size:14px;margin-top:8px}.math-graph{width:100%;height:auto;margin-top:16px;overflow:hidden}.math-graph .grid{stroke:#ffffff13;stroke-width:1}.math-graph .axes{stroke:#c5d7bf80;stroke-width:1}.math-graph text{fill:#c5d7bf;font:12px Golos,Arial,sans-serif}.math-graph .function-line{stroke:#dceea2;stroke-width:3;fill:none}.math-graph .intercept{fill:#dceea2;stroke:#173f35;stroke-width:2}.equation-output{font:italic 29px Georgia,serif;margin-top:12px;display:block}.range-row{display:flex;align-items:center;gap:16px;margin-top:20px}.range-row label{font:italic 22px Georgia,serif;white-space:nowrap;width:56px}.range-row input{flex:1;min-width:0;accent-color:#dceea2;min-height:32px}.range-row output{font:18px Georgia,serif;min-width:25px}.math-demo .demo-insight{font-size:14px;color:#e0eacb;margin-top:18px;min-height:44px}
.story-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.story{border-top:2px solid var(--accent);padding-top:20px}.story .story-result{font:48px/1.1 Georgia,serif;letter-spacing:-2px;margin:12px 0 18px}.story h3{font-size:20px;line-height:1.35;font-weight:550}.story p{margin-top:16px;color:var(--muted)}.story .small{font-size:14px}.results-note{margin-top:30px;color:var(--muted);font-size:14px;max-width:75ch}.review-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:24px}.review-buttons{display:flex;align-items:center;gap:12px}.round-button{border:1px solid var(--line);background:var(--paper);border-radius:50%;height:44px;width:44px;font-size:23px}.review-track{display:flex;overflow-x:auto;gap:20px;scroll-snap-type:x mandatory;scrollbar-width:thin;scrollbar-color:var(--line) transparent;padding:4px 2px 16px}.review-item{scroll-snap-align:start;flex:0 0 240px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:12px;text-align:left}.review-item img{width:100%;height:320px;object-fit:cover;object-position:top;border-radius:8px;border:1px solid #e0e0dc}.review-item span{display:flex;justify-content:space-between;padding:12px 2px 2px;font-size:14px;min-height:44px;align-items:center}.review-item:hover{border-color:var(--accent)}
.details-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.details-stack details{border-bottom:1px solid var(--line)}.details-stack summary{padding:20px 34px 20px 0;cursor:pointer;position:relative;list-style:none;font-size:18px;font-weight:500;line-height:1.4;min-height:64px}.details-stack summary::-webkit-details-marker{display:none}.details-stack summary:after{content:'+';position:absolute;right:0;top:18px;font-size:24px;font-weight:400}.details-stack details[open] summary:after{content:'−'}.details-stack details p{padding-bottom:20px;color:var(--muted)}.details-stack details p+p{padding-top:0}.platform-note{background:var(--wash);border-radius:var(--radius);padding:32px;align-self:start}.platform-note .brand{margin-bottom:24px}.platform-note h3{font-size:25px;font-weight:500;letter-spacing:-.7px;line-height:1.25}.platform-note p{margin:20px 0}.platform-note>a{min-height:44px;display:inline-flex;align-items:center;font-weight:550}
.contact-section{padding:44px;border:1px solid var(--line);border-radius:var(--radius);background:var(--wash);display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:16px}.contact-section .section-title{font-size:42px}.contact-section p{margin-top:20px}.contact-section .primary{margin-top:24px;min-width:240px}.contact-section .phone-link{display:block;width:fit-content;min-height:44px;padding-block:12px;font-size:18px;margin-top:8px}.contact-link-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.contact-link{display:flex;align-items:center;justify-content:space-between;gap:12px;text-decoration:none;border:1px solid var(--line);border-radius:10px;background:var(--paper);min-height:56px;padding:12px 16px;font-size:15px}.contact-link:hover{border-color:var(--accent)}.channels{margin-top:26px}.channels h3{font-size:16px;font-weight:550}.channels p{font-size:14px;margin-top:8px;color:var(--muted)}.channels-links{display:flex;flex-wrap:wrap;gap:20px;margin-top:10px;font-size:14px}.channels-links a{min-height:44px;display:flex;align-items:center}.referral{padding-top:32px;display:grid;grid-template-columns:1fr 1fr;gap:48px}.referral h3{font-size:20px;font-weight:550;margin-bottom:8px}.referral p{font-size:14px;color:var(--muted)}.share-feedback{font-size:14px;margin-top:8px;color:var(--muted);overflow-wrap:anywhere}.footer{display:flex;gap:16px 30px;flex-wrap:wrap;justify-content:space-between;font-size:12px;line-height:1.6;padding-bottom:28px}.footer a{min-height:36px}
dialog{width:min(480px,calc(100% - 32px));max-height:calc(100dvh - 32px);border:1px solid var(--line);border-radius:20px;background:var(--paper);color:var(--ink);padding:28px;box-shadow:0 24px 100px #0003;overflow:auto}dialog::backdrop{background:#102a23ad;backdrop-filter:blur(5px)}.dialog-head{display:flex;align-items:start;justify-content:space-between;gap:16px;margin-bottom:20px}.dialog-head h2{font-size:25px;line-height:1.2;font-weight:550;letter-spacing:-.8px;padding-top:6px}.close-button{background:var(--wash);border-radius:50%;flex:0 0 44px;height:44px;font-size:28px;font-weight:300;line-height:1}.dialog-contacts{display:grid;gap:10px;margin:24px 0}.dialog-contacts a{min-height:56px}.menu-links{display:grid}.menu-links a{display:flex;justify-content:space-between;align-items:center;gap:20px;text-decoration:none;border-bottom:1px solid var(--line);min-height:60px;padding:12px 0}.review-dialog{width:min(720px,calc(100% - 24px));padding:16px}.review-dialog .dialog-head{position:sticky;top:-16px;margin-bottom:12px;padding:8px 0;background:var(--paper)}.review-dialog>img{width:100%;height:auto}.review-dialog h2{font-size:20px}
[data-design=board] .section-title,[data-design=notebook] .section-title{font-family:Georgia,serif;font-weight:400;letter-spacing:-1.3px}


@media(min-width:1500px){.hero{padding-top:60px;padding-bottom:80px}}
@media(max-width:900px){.wrap{width:calc(100% - 48px)}.board-hero,.marker-hero{gap:36px}.board-hero h1,.marker-hero h1{font-size:58px}.board-person .person-caption{display:block}.board-person .teacher-caption{margin-top:10px;max-width:none}.board-equation{display:block}.board-equation p{max-width:none;margin-top:12px}.marker-art .portrait{height:340px}.notebook-hero{gap:28px;grid-template-columns:1.2fr .8fr}.notebook-copy{padding:28px 20px 28px 40px}.notebook-copy h1{font-size:48px;line-height:56px}.story-grid{gap:20px}.contact-section{padding:32px;gap:32px}.contact-link-grid{grid-template-columns:1fr}.contact-section .section-title{font-size:36px}.section-title{font-size:34px}.about-grid{gap:36px}[data-design=board] .page-content{padding-inline:24px}}
@media(max-width:640px){
  .wrap{width:calc(100% - 40px)}.picker-inner{padding:6px 12px;gap:4px}.picker-label,.design-picker .original-link{display:none}.design-picker a{flex:1;padding:6px 4px;gap:6px;min-height:40px;font-size:13px}.design-picker a span{font-size:11px}.masthead{height:72px}.brand{font-size:17px}.menu-button{font-size:14px}.hero{padding:20px 0 36px}.eyebrow{font-size:13px;letter-spacing:0;margin-bottom:20px}.hero h1{font-size:48px;line-height:1.05}.hero-lead{font-size:16px;margin-top:20px;line-height:1.65}.hero-actions{margin-top:22px;max-width:none}.primary{padding:16px 18px;min-height:56px;font-size:15px;gap:14px;border-radius:12px}.hero-actions .small{font-size:13px;margin-top:10px}.quick-links{justify-content:space-between;gap:0 12px;margin-top:12px;font-size:14px}.teacher-name{font-size:22px;letter-spacing:-.6px}.teacher-caption{font-size:14px;margin-top:12px}.hero-metadata{font-size:13px}
  .board-hero{display:flex;flex-direction:column;gap:0;padding-top:8px}.board-hero .hero-copy{display:contents}.board-hero .eyebrow{order:0}.board-hero h1{order:1;font-size:52px;line-height:1.05;letter-spacing:-2.6px}.board-person{order:2;display:grid;grid-template-columns:130px 1fr;gap:20px;align-items:center;padding-top:0;margin-top:26px}.board-photo{aspect-ratio:.84;border-radius:80px 80px 6px 6px}.board-person .person-caption{display:block}.board-person .teacher-name{font-size:23px}.board-person .teacher-caption{margin-top:10px;line-height:1.5}.board-equation{display:none}.board-hero .hero-lead{order:3;margin-top:22px;font-size:16px}.board-hero .hero-actions{order:4}.board-hero .hero-metadata{order:5;margin-top:18px}.board-hero .quick-links{color:#e2e9d7}[data-design=board] .page-content{padding:0 20px 44px;border-radius:20px 20px 0 0}[data-design=board] .footer{padding-block:24px}
  .marker-hero{display:flex;flex-direction:column;gap:0;padding-top:8px}.marker-hero .hero-copy{display:contents}.marker-hero .eyebrow{order:0;margin-bottom:20px}.marker-hero h1{order:1;font-size:49px;line-height:1.12;letter-spacing:-3px}.marker-identity{order:2;margin-top:26px;gap:16px}.marker-identity .photo-small{width:83px;height:96px;border-radius:10px}.marker-identity .teacher-name{font-size:21px}.marker-identity .teacher-caption{margin-top:8px;max-width:22ch;line-height:1.5}.marker-hero .hero-lead{order:3;margin-top:22px}.marker-hero .hero-actions{order:4;margin-top:22px}.marker-art{order:5;display:flex;align-items:center;width:100%;padding:0;background:none;border-radius:0;margin-top:24px}.marker-art>.portrait{display:none}.marker-note{margin:0;width:100%;box-shadow:none;transform:rotate(-1deg);padding:16px 18px;border:1.5px solid #a4b99a;border-radius:8px;background:#f1f5e5}.marker-note .math-writing{font-size:30px}.marker-note p{font-size:13px;max-width:145px}
  .notebook-hero{display:flex;flex-direction:column;gap:0;padding-top:8px}.notebook-copy{display:contents}.notebook-copy .eyebrow{order:0;margin-bottom:16px;line-height:24px}.notebook-copy h1{order:1;font-size:43px;line-height:1.1;letter-spacing:-1.9px}.notebook-copy h1 em{display:inline}.notebook-person{order:2;display:grid;grid-template-columns:128px 1fr;gap:22px;align-items:center;padding-top:0;margin-top:28px}.notebook-photo{padding:7px 7px 10px;transform:rotate(-3deg);width:128px}.notebook-photo .portrait{aspect-ratio:.95;object-position:50% 22%}.notebook-photo figcaption{font-size:13px;margin-top:8px;line-height:1.25}.notebook-person .teacher-caption{font-size:14px;line-height:1.6;margin:0}.notebook-person .teacher-caption strong{display:block;font-weight:550;font-size:21px;line-height:1.2;letter-spacing:-.6px;margin-bottom:10px}.notebook-margin{display:none}.notebook-copy .hero-lead{order:3;margin-top:24px;padding:18px 14px 18px 27px;font-size:16px;line-height:28px;border:1px solid #d5d8c8;border-radius:3px;background-color:#fcfbf1;background-image:linear-gradient(90deg,transparent 16px,#b2785c66 16px,#b2785c66 17px,transparent 17px),linear-gradient(#436e5421 1px,transparent 1px),linear-gradient(90deg,#436e5418 1px,transparent 1px);background-size:100% 100%,28px 28px,28px 28px;background-position:0 0,0 12px,0 12px;box-shadow:0 5px 16px #2230210a}.notebook-copy .hero-actions{order:4;margin-top:22px}.notebook-copy .hero-actions .small{line-height:22px;margin-top:10px}.notebook-copy .quick-links{margin-top:12px}
  .section-nav{flex-wrap:nowrap;gap:24px;overflow-x:auto;padding-block:12px;white-space:nowrap;scrollbar-width:none}.section-nav::-webkit-scrollbar{display:none}.section{padding-block:40px}.section-heading{display:block;margin-bottom:24px}.section-title{font-size:32px;line-height:1.16;letter-spacing:-1.2px}.section-intro{margin-top:16px;font-size:16px}.section-label{font-size:13px;margin-bottom:12px}.about-grid{display:block}.about-text{font-size:16px;gap:16px}.about-facts{margin-top:28px;padding-left:18px;gap:20px}.about-facts strong{font-size:17px}.about-facts span{font-size:14px}.hand-note{font-size:25px;margin-top:24px}.goal-list{margin-bottom:24px;gap:8px}.goal-list span{font-size:13px;padding:8px 11px}.format-grid{grid-template-columns:1fr;gap:16px}.format{padding:24px}.format h3{font-size:25px}.format p{margin-top:16px}.format ul{margin-top:16px;margin-bottom:16px}.format .format-type{font-size:13px;margin-bottom:12px}.method-grid{display:block}.method-steps{margin-bottom:10px}.method-steps li{padding-left:36px}.method-steps h3{font-size:18px}.math-demo{padding:24px 20px}.math-demo h3{font-size:18px}.story-grid{grid-template-columns:1fr;gap:28px}.story{padding-top:16px;display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.story>.small{grid-column:1/-1}.story .story-result{font-size:40px;margin:12px 0}.story h3{font-size:18px;margin-block:12px;align-self:center}.story>p:not(.small){grid-column:1/-1;margin-top:4px}.results-note{margin-top:24px}.review-track{gap:14px}.review-item{flex-basis:240px}.review-toolbar{align-items:start;font-size:14px}.review-toolbar>a{max-width:160px;min-height:44px;display:flex;align-items:center}.details-grid{grid-template-columns:1fr;gap:28px}.details-stack summary{font-size:17px}.platform-note{padding:24px}.platform-note h3{font-size:25px}.contact-section{display:block;padding:26px 20px;margin-top:0}.contact-section .section-title{font-size:34px}.contact-section .primary{width:100%;margin-top:22px;min-width:0}.contact-section p{margin-top:16px}.contact-section .phone-link{margin-block:8px 24px;font-size:17px}.contact-link-grid{grid-template-columns:1fr 1fr;gap:8px}.contact-link{padding:12px;font-size:14px;min-height:52px}.channels{margin-top:24px}.channels-links{gap:18px}.channels p{margin-top:8px}.referral{grid-template-columns:1fr;gap:12px;padding-top:28px}.footer{display:grid;gap:8px;padding-bottom:24px}.footer a{min-height:32px}.page-content{padding-bottom:40px}.dialog-head h2{font-size:23px}dialog{padding:24px}
}
@media(max-width:359px){.wrap{width:calc(100% - 32px)}.hero h1{font-size:43px}.board-hero h1{font-size:46px}.marker-hero h1{font-size:43px}.board-person{grid-template-columns:116px 1fr;gap:16px}.board-person .teacher-name{font-size:21px}.notebook-copy h1{font-size:39px}.notebook-person{gap:16px;grid-template-columns:116px 1fr}.notebook-photo{width:116px}.primary{font-size:14px;padding-inline:14px}.quick-links{gap:8px;font-size:13px}.contact-link-grid{grid-template-columns:1fr}}
.notebook-person .teacher-caption strong{display:block;margin-bottom:10px;font-size:21px;line-height:1.2;font-weight:550;letter-spacing:-.6px}
@media(min-width:641px){.marker-identity .photo-small{display:none}}
@media(max-width:640px){.notebook-copy .hero-actions{align-self:stretch;width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* Finished board: parent-first hierarchy, restrained movement and real geography. */
[hidden]{display:none!important}
html{scroll-padding-top:100px}
body.board-final{background:radial-gradient(ellipse 80% 700px at 90% 150px,#2c5948 0%,#163f35 65%);color:var(--ink)}
.board-final .masthead{position:sticky;top:0;z-index:20;width:100%;height:80px;padding-inline:max(32px,calc((100% - 1120px)/2));background:#163f35f5;border-bottom:1px solid #c5d6aa21;backdrop-filter:blur(12px)}
.header-actions{display:flex;align-items:center;gap:24px}
.masthead .brand>img{filter:brightness(0) invert(1);width:28px;height:28px}
.masthead .brand-mark{color:#e0ebb0;flex:0 0 28px}
.bonus-trigger{display:flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:10px 15px;border:1px solid #b7cd8d77;border-radius:12px;text-decoration:none;color:#e3edb8;font-size:14px;transition:background .18s,border-color .18s}
.bonus-trigger:hover{background:#365848;border-color:#dceab4}
.board-final .board-hero{padding-block:44px 64px;gap:72px}
.board-final .board-hero .hero-lead{font-size:18px;line-height:1.65;max-width:44ch}
.board-final .board-hero .board-photo{box-shadow:0 20px 60px #061e222e}
.board-final .board-person .person-caption{gap:16px}
.about-experience-list{list-style:none;margin:18px 0 0;padding:0;border-top:1px solid var(--line)}
.about-experience-list li{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:42px;border-bottom:1px solid var(--line)}
.about-experience-list img{display:block;width:auto;max-width:104px;max-height:26px;object-fit:contain;object-position:left center}
.about-experience-list span:last-child{font-size:13px;color:var(--muted);white-space:nowrap;margin:0}
.about-experience-list .private-school-label{font-size:14px;color:var(--ink);font-weight:550;margin:0}
.board-final .board-equation{color:#e0eab3}
.board-final .board-equation .math-writing{font-size:28px;line-height:1.4}
.board-final .page-content{box-shadow:0 -1px 0 #eceddb55;background:linear-gradient(160deg,#f5f4ec,#f0f2e9)}
.section-nav{gap:32px;padding-block:16px}
.section-nav a{font-weight:500;font-size:15px}
.section-title{font-family:Georgia,serif;font-weight:400}
.subject-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.subject{display:grid;grid-template-columns:72px 1fr;gap:20px;padding:28px 0;border-top:1px solid var(--line)}
.subject h3{font-size:23px;font-weight:550;letter-spacing:-.6px;line-height:1.3}
.subject p{color:var(--muted);margin-top:12px;font-size:16px}
.subject a{display:inline-flex;align-items:center;min-height:44px;font-size:14px;font-weight:500;margin-top:12px;text-decoration:underline;text-underline-offset:4px}
.subject-icon{width:72px;height:80px;padding:10px;border-radius:12px;background:#fffdf4;border:1px solid #d4ddc7;display:flex;align-items:center;justify-content:center}
.subject-icon img{width:100%;height:100%;object-fit:contain}
.school-symbol{font:italic 38px Georgia,serif;color:#2b5b43}
.format,.contact-link,.subject-icon{transition:border-color .18s,box-shadow .18s}
.format:hover{border-color:#9cb291;box-shadow:0 8px 24px #153e3208}
.math-demo{background:radial-gradient(ellipse at 100% 0%,#305a46,#173f35 75%)}
.math-graph .function-line{transition:d .2s ease}
.method-steps{align-self:center}
.review-item{text-decoration:none;transition:border-color .18s,box-shadow .18s}
.review-item:hover{box-shadow:0 6px 22px #24442d10}
.review-item>span>span{padding:0;min-height:0}
.map-card{background:linear-gradient(135deg,#fafbf3,#e8eddf);border:1px solid #cbd5c1;border-radius:20px;padding:28px;overflow:hidden}
.map-caption{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:20px;font-size:14px}
.map-caption>span{display:flex;align-items:center;gap:10px;line-height:1.5}
.map-caption i{background:#407457;width:9px;height:9px;border-radius:50%;flex:0 0 auto;box-shadow:0 0 0 4px #46734f15}
.map-expand{background:none;min-height:44px;text-decoration:underline;text-underline-offset:4px;white-space:nowrap;padding:6px 0;font-size:14px}
.student-map{padding:8px 0 20px}
.student-map img{width:100%;height:auto;filter:drop-shadow(0 6px 8px #3455410e)}
.region-list{list-style:none;padding:20px 0 0;margin:0;border-top:1px solid #ced8c1;display:grid;grid-template-columns:repeat(4,1fr);gap:12px 20px;color:#3d5948;font-size:13px;line-height:1.5}
.region-list li{padding-left:12px;position:relative}
.region-list li:before{content:'';position:absolute;top:7px;left:0;width:4px;height:4px;border-radius:50%;background:#608260}
.map-dialog{width:min(1050px,calc(100% - 24px))}
.map-scroll{overflow:auto;margin-top:20px;overscroll-behavior:contain;border-radius:12px;background:#edf1e6}
.map-scroll img{min-width:850px;width:100%;height:auto}
.bonus-section{display:grid;grid-template-columns:1fr 1fr;gap:64px;margin:20px 0 56px;padding:44px;border-radius:20px;border:1px solid #c6d2b8;background:radial-gradient(ellipse at 0 0,#eaf0d4,#e1e9d5 65%);scroll-margin-top:100px}
.bonus-section .section-label{color:#456041}
.bonus-section p{margin-top:22px;max-width:43ch}
.bonus-amounts{display:flex;gap:32px;margin-top:26px;flex-wrap:wrap}
.bonus-amounts strong{display:block;font:36px/1.2 Georgia,serif;letter-spacing:-1px}
.bonus-amounts span{display:block;font-size:14px;line-height:1.5;margin-top:8px;color:#466047}
.bonus-steps{list-style:none;padding:0;counter-reset:bonus;margin:0}
.bonus-steps li{counter-increment:bonus;padding-left:38px;position:relative;line-height:1.5;margin-bottom:24px}
.bonus-steps li:before{content:counter(bonus);position:absolute;top:0;left:0;font:italic 26px Georgia,serif;color:#5a754c}
.bonus-steps b{display:block;font-size:17px;font-weight:550}
.bonus-steps span{display:block;font-size:15px;margin-top:6px;color:#48614a}
.bonus-actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.bonus-actions .primary{gap:16px}
.bonus-actions .text-button{padding:12px 6px}
.qr-image{margin:24px auto;background:#fff;padding:12px;border-radius:12px;width:240px;height:240px;object-fit:contain}
.qr-image+p{font-size:15px;margin-top:16px}
.bonus-section .share-feedback{font-size:14px;margin-top:12px;min-height:0}
.board-final .contact-section{background:#fcfcf5;border-color:#becdb4}
.board-final .contact-section .primary{background:#204d3b}
.board-final .channels h3{font-size:17px}
.board-final .footer{width:100%;max-width:none;padding:32px max(32px,calc((100% - 1120px)/2));font-size:13px;align-items:start}
.footer strong{display:block;font-size:15px;font-weight:500}
.footer span{display:block;color:#afc5b0;margin-top:8px}
.footer nav{display:flex;gap:10px 24px;flex-wrap:wrap}
.footer nav a{min-height:44px;display:inline-flex;align-items:center}
.details-stack details p{max-width:60ch}
.details-stack .text-button{display:inline-flex;align-items:center;margin:0 0 18px}
.board-final .section{scroll-margin-top:96px}
.range-row input:disabled{opacity:.5}
.menu-links a span{color:#718364}
.board-final .section,.board-final .bonus-section{scroll-margin-top:16px}
@media(prefers-reduced-motion:no-preference){
  .board-final .board-hero h1{animation:board-arrive .55s ease-out both}
  .board-final .board-person{animation:board-arrive .65s .08s ease-out both}
  dialog[open]{animation:dialog-arrive .18s ease-out}
  .primary .arrow{transition:transform .18s}.primary:hover .arrow{transform:translate(2px,-2px)}
  @keyframes board-arrive{from{opacity:.75;transform:translateY(7px)}to{opacity:1;transform:none}}
  @keyframes dialog-arrive{from{opacity:.5;transform:translateY(5px)}to{opacity:1;transform:none}}
}
@media(max-width:900px){.board-final .board-hero{gap:36px}.subject-grid{gap:0 24px}.subject{grid-template-columns:58px 1fr;gap:16px}.subject-icon{width:58px;height:68px}.subject h3{font-size:21px}.bonus-section{gap:32px;padding:32px}.region-list{grid-template-columns:repeat(2,1fr)}.bonus-amounts{gap:24px}}
@media(max-width:640px){
  html{scroll-padding-top:84px}.board-final .masthead{height:68px;padding-inline:20px}.masthead .brand{gap:8px;font-size:16px}.masthead .brand>img{width:24px;height:24px}.header-actions{gap:10px}.bonus-label-long{display:none}.bonus-trigger{padding:8px 10px;gap:6px;font-size:13px;min-height:44px;border-radius:10px}.menu-button{font-size:13px;padding:8px 0 8px 6px;gap:6px}.menu-button span{font-size:19px}
  .board-final .board-hero{padding:28px 0 36px;gap:0}.board-final .board-hero .eyebrow{font-size:13px;line-height:1.6;margin-bottom:18px}.board-final .board-hero h1{font-size:52px;line-height:1.05}.board-final .board-person{grid-template-columns:142px 1fr;gap:20px;margin-top:24px}.board-final .board-person .teacher-name{font-size:24px;line-height:1.18}.board-final .board-person .teacher-caption{font-size:14px;line-height:1.6}.about-experience-list{margin-top:14px}.about-experience-list li{min-height:38px}.about-experience-list img{max-width:92px;max-height:23px}.board-final .board-hero .hero-lead{font-size:16px;line-height:1.65;margin-top:22px}.board-final .hero-actions{margin-top:22px}.board-final .hero-actions .small{font-size:14px;line-height:1.5}.board-final .quick-links{font-size:14px;margin-top:8px}.board-final .board-photo{aspect-ratio:.85}.board-final .board-photo .portrait{object-position:50% 20%}
  .section-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;overflow:visible;white-space:normal;padding:14px 0}.section-nav a{font-size:13px;line-height:1.35;justify-content:center;text-align:center;padding:6px 2px;min-height:44px}
  .subject-grid{grid-template-columns:1fr;gap:0}.subject{grid-template-columns:56px 1fr;gap:16px;padding:24px 0}.subject-icon{width:56px;height:64px;padding:8px}.subject h3{font-size:21px}.subject p{margin-top:10px;font-size:16px;line-height:1.65}.subject a{font-size:14px;margin-top:8px}.subject:last-child{padding-bottom:0}.school-symbol{font-size:31px}
  .board-final .section{padding-block:40px;scroll-margin-top:80px}.section-heading{margin-bottom:24px}.board-final .section-title{font-size:32px;line-height:1.17}.board-final .section-label{font-size:14px}.board-final .format .format-type{font-size:14px}.board-final .format{padding:24px}.board-final .lesson-note{font-size:14px;line-height:1.6}
  .map-card{padding:20px 16px;border-radius:16px}.map-caption{display:block;margin-bottom:8px;font-size:14px}.map-caption>span{align-items:start}.map-caption i{margin-top:6px}.map-expand{margin-left:19px;margin-top:6px;min-height:44px}.student-map{padding:0 0 18px}.region-list{grid-template-columns:1fr 1fr;gap:10px 12px;font-size:13px;padding-top:18px}.region-list li{padding-left:9px}.region-list li:before{top:7px;width:3px;height:3px}
  .bonus-section{display:block;margin:8px 0 36px;padding:26px 20px;border-radius:16px;scroll-margin-top:88px}.bonus-section p{margin-top:18px;font-size:16px}.bonus-amounts{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}.bonus-amounts strong{font-size:32px}.bonus-amounts span{font-size:14px}.bonus-steps{margin-top:30px}.bonus-steps li{padding-left:34px;margin-bottom:22px}.bonus-steps b{font-size:16px}.bonus-steps span{font-size:15px}.bonus-actions{gap:16px}.bonus-actions .primary{font-size:14px;padding-inline:14px;gap:14px;min-height:52px}.bonus-actions .text-button{font-size:14px}
  .board-final .contact-section .section-title{font-size:34px}.board-final .footer{padding:28px 20px}.footer nav{gap:4px 18px;margin-top:10px}.footer strong{font-size:14px}.footer span{font-size:13px}.footer nav a{font-size:13px}.review-item{flex-basis:calc(100% - 30px)}.review-item img{height:360px}.review-toolbar>a{max-width:180px;font-size:14px}.review-item span{font-size:14px}.board-final .contact-link{font-size:15px;min-height:56px}
}
@media(max-width:359px){.board-final .masthead{padding-inline:16px}.header-actions{gap:6px}.bonus-trigger{padding-inline:8px}.masthead .brand{font-size:15px}.board-final .board-hero h1{font-size:46px}.board-final .board-person{grid-template-columns:120px 1fr;gap:16px}.board-final .board-person .teacher-name{font-size:21px}.board-final .board-person .teacher-caption{font-size:13px}.region-list{grid-template-columns:1fr}.bonus-amounts strong{font-size:29px}.bonus-actions{gap:8px}.board-final .section-title{font-size:30px}}
.board-final .section,.board-final .bonus-section{scroll-margin-top:16px}