@charset "UTF-8";
:root{--paper:#f7f7f3;--white:#fff;--ink:#162725;--muted:#65726c;--line:#dfe5dc;--green:#1b705c;--green-deep:#15443b;--mint:#e4efe8;--amber:#e4b675;--soft:#edf2eb;--radius:18px;--shadow:0 12px 44px rgba(20,45,36,.055);--shell:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:36px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.64 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--green)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #b18b41;outline-offset:3px}button,input{font:inherit}button{cursor:pointer}img,svg{max-width:100%}img{display:block}::selection{background:#ccead8;color:#123d30}[hidden]{display:none!important}
.shell{width:min(var(--shell),calc(100% - 56px));margin-inline:auto}.skip-link{position:absolute;left:16px;top:-70px;background:var(--ink);color:white;padding:10px 14px;z-index:1000;border-radius:6px}.skip-link:focus{top:12px;color:white}
.site-header{background:rgba(247,247,243,.97);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;gap:32px;min-height:82px}.logo{display:inline-flex;align-items:center;gap:12px;font-size:24px;font-weight:800;letter-spacing:-1.4px;line-height:1;color:var(--ink);white-space:nowrap}.logo:hover{color:var(--ink)}.logo-mark{width:37px;height:37px;display:inline-flex;align-items:flex-end;justify-content:center;gap:4px;padding:8px 7px;background:var(--green-deep);border-radius:12px;transform:rotate(-4deg)}.logo-mark span{width:5px;border-radius:2px;background:#e8f3e7}.logo-mark span:nth-child(1){height:9px}.logo-mark span:nth-child(2){height:16px;background:#e6bd80}.logo-mark span:nth-child(3){height:21px}.header-divider{height:28px;width:1px;background:var(--line)}.header-note{font-size:12px;font-weight:650;letter-spacing:.035em;color:var(--muted);white-space:nowrap}.site-nav{display:flex;align-items:center;gap:29px;margin-left:auto}.site-nav a{font-size:14px;font-weight:700;color:#66766e;position:relative;padding:8px 0}.site-nav a[aria-current="page"],.site-nav a:hover{color:var(--green-deep)}.site-nav a[aria-current="page"]:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--green)}
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.section{padding:63px 0}.section-border{border-top:1px solid var(--line)}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:29px}.section-heading h2,.page-intro h1,.about-hero h1{font:normal clamp(36px,3.6vw,54px)/1.15 Georgia,"Times New Roman",serif;letter-spacing:-.045em;margin:10px 0 0}.section-heading p{margin:0;color:var(--muted);max-width:370px;font-size:14px}.section-subtitle{color:var(--muted);font-size:15px;max-width:600px}.featured-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.feature-card{border:1px solid #d9e4dc;border-radius:var(--radius);background:var(--white);padding:32px;min-height:340px;display:flex;flex-direction:column;justify-content:space-between;transition:transform .2s,border-color .2s,box-shadow .2s}.feature-card:hover,.note-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#a6c8b6;color:var(--ink)}.feature-card.dark{background:var(--green-deep);border-color:var(--green-deep);color:white}.feature-card.dark:hover{color:white;background:#1c5649}.feature-card .topline,.note-card .topline{display:flex;align-items:center;justify-content:space-between;gap:16px;color:#5f806e;font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:750}.feature-card.dark .topline{color:#b4d4c3}.feature-card h3{font:normal clamp(26px,2.5vw,39px)/1.2 Georgia,"Times New Roman",serif;letter-spacing:-.025em;max-width:510px;margin:14px 0}.feature-card p{font-size:14px;line-height:1.7;color:#617168;max-width:510px;margin:0}.feature-card.dark p{color:#c4d8cd}.feature-card .card-arrow{display:inline-grid;place-items:center;width:40px;height:40px;border:1px solid #d5e3d8;border-radius:50%;font-size:23px;line-height:1}.feature-card.dark .card-arrow{border-color:#5f9884}.feature-card-footer{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:20px}.feature-card .small-meta{color:#698474;font-size:12px}.feature-card.dark .small-meta{color:#bbd0c3}
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@media(max-width:740px){.shell{width:min(100% - 36px,var(--shell))}.header-inner{min-height:74px}.site-nav{gap:17px}.site-nav a{font-size:12px}.logo{font-size:21px}.logo-mark{width:32px;height:32px;padding:6px}.hero{padding:55px 0 65px}.hero-grid{grid-template-columns:1fr;gap:40px}.hero h1{font-size:clamp(51px,10vw,70px)}.hero-description{font-size:17px}.hero-art{max-width:560px}.section{padding:48px 0}.section-heading{align-items:start;flex-direction:column;gap:12px}.featured-grid,.notes-preview,.catalog-grid,.about-grid{grid-template-columns:1fr}.feature-card{min-height:310px}.topic-row{gap:11px}.topic-tile{min-height:155px}.catalog-tools-inner{align-items:stretch}.search-field{width:100%;min-width:0}.article-header{padding:31px 0 35px}.article-header h1{font-size:clamp(43px,8vw,61px)}.article-lead{font-size:17px}.article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:32px}.article-aside{position:static;grid-row:1;margin-bottom:34px}.toc{padding:19px 20px}.toc nav{display:grid;grid-template-columns:1fr 1fr;gap:10px 15px}.aside-note{display:none}.article-neighbors{grid-template-columns:1fr}.neighbor.next{text-align:left}.about-panel.wide{display:block}.about-panel.wide .btn{margin-top:20px}.not-found{grid-template-columns:1fr;min-height:0;gap:17px}.not-found-num{font-size:140px}.footer-row{grid-template-columns:1fr}.footer-bottom{flex-direction:column;gap:5px}}
@media(max-width:430px){.shell{width:calc(100% - 30px)}.header-inner{gap:10px}.site-nav{gap:11px}.site-nav a{font-size:11px}.logo{font-size:19px;gap:7px}.hero h1{font-size:48px}.chart-card{padding:24px 18px}.chart-card h2{font-size:26px}.feature-card{padding:25px}.topic-row{grid-template-columns:1fr 1fr}.topic-tile{padding:17px;min-height:148px}.topic-tile strong{font-size:14px}.note-card{padding:23px}.about-panel{padding:27px}.stats-pair{grid-template-columns:1fr}.toc nav{grid-template-columns:1fr}.footer-nav{gap:17px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media print{body{background:#fff;color:#000}.site-header,.site-footer,.article-aside,.article-bottom,.btn,.catalog-tools{display:none!important}.shell{width:100%}.article-layout{display:block}.prose{max-width:none}.prose .formula{-webkit-print-color-adjust:exact;print-color-adjust:exact}.prose section{break-inside:avoid}.article-header{padding-top:0}.article-header h1{font-size:35pt}}

/* Yandex Metrica noscript pixel */
.metrika-noscript{position:absolute;left:-9999px;top:0;width:1px;height:1px;overflow:hidden}