:root{--indigo:#3b3aa8;--indigo-ink:#2c2b85;--wash:#f3f3fb;--text:#16161d;--quiet:#55556a;--rule:#dcdce6;--serif:"Iowan Old Style","Palatino Linotype","URW Palladio L",P052,"Book Antiqua",Georgia,serif;--sans:system-ui,-apple-system,"Segoe UI Variable Text",Roboto,"Noto Sans",sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:#ffffff;color:var(--text);font:17px/1.7 var(--sans);padding-bottom:72px}
a{color:var(--indigo);text-decoration-thickness:1px;text-underline-offset:.2em}
a:hover{color:var(--indigo-ink);text-decoration-thickness:2px}
svg{max-width:100%;height:auto}

body>header,main,body>footer{max-width:38rem;margin:0 auto;padding-left:20px;padding-right:20px}
body>header{padding-top:28px;padding-bottom:12px;text-align:center}
body>header>a{display:inline-block;text-decoration:none;color:var(--text);padding:6px 0}
body>header>a b{display:block;font:italic 400 28px/1.1 var(--serif);letter-spacing:-.01em}
body>header>a small{display:block;font-size:13px;color:var(--quiet);letter-spacing:.04em;margin-top:4px}
body>header nav{display:flex;justify-content:center;flex-wrap:wrap;gap:0 4px;margin-top:8px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
body>header nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 10px;font-size:15px;color:var(--quiet);text-decoration:none}
body>header nav a:hover,body>header nav a[aria-current]{color:var(--indigo)}

nav[aria-label="Хлебные крошки"] ol{list-style:none;margin:24px 0 0;padding:0;display:flex;flex-wrap:wrap;align-items:center;font-size:14px;color:var(--quiet)}
nav[aria-label="Хлебные крошки"] li{display:flex;align-items:center}
nav[aria-label="Хлебные крошки"] li+li::before{content:"·";margin:0 10px}
nav[aria-label="Хлебные крошки"] a{display:inline-flex;align-items:center;min-height:44px}

h1,h2,h3{font-family:var(--serif);font-weight:400;color:var(--text);text-wrap:balance}
h1{font-size:36px;line-height:1.12;letter-spacing:-.015em;margin:32px 0 12px}
h2{font-size:28px;line-height:1.2;margin:64px 0 16px}
h3{font-size:21px;line-height:1.3;margin:32px 0 8px;font-style:italic}
p{margin:0 0 18px}
p:has(time){font-size:14px;color:var(--quiet);margin-bottom:24px}
p:has(time)+p{font-family:var(--serif);font-size:21px;line-height:1.5}

a[href^="/go/start"]{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:50px;padding:0 26px;background:var(--indigo);color:#ffffff;font:500 18px/1 var(--serif);letter-spacing:.01em;text-decoration:none}
a[href^="/go/start"]::after{content:"→";font-family:var(--sans)}
a[href^="/go/start"]:hover{background:var(--indigo-ink);color:#ffffff}
a[href^="/go/start"]+small{display:block;font-size:14px;color:var(--quiet);margin-top:10px}

nav[aria-label="Содержание"]{margin:48px 0 0;padding:20px 0;border-top:1px solid var(--text);border-bottom:1px solid var(--rule)}
nav[aria-label="Содержание"]>p{font:600 13px/1.4 var(--sans);letter-spacing:.14em;text-transform:uppercase;margin:0 0 8px;color:var(--quiet)}
nav[aria-label="Содержание"] ol{margin:0;padding-left:2.2em;list-style:upper-roman;font-family:var(--serif)}
nav[aria-label="Содержание"] li::marker{color:var(--indigo)}
nav[aria-label="Содержание"] a{display:inline-flex;align-items:center;min-height:44px;font-size:19px;color:var(--text);text-decoration:none}
nav[aria-label="Содержание"] a:hover{color:var(--indigo)}

figure{margin:36px 0;text-align:center}
figcaption{font-size:14px;color:var(--quiet);margin-top:10px;font-style:italic;font-family:var(--serif)}
figure>div{display:flex;justify-content:center;align-items:flex-end;gap:32px;flex-wrap:wrap}

section>ol{padding-left:1.4em;margin:0 0 18px}
section>ol>li{padding-left:.3em;margin-bottom:12px}
section>ol>li::marker{font-family:var(--serif);color:var(--indigo);font-weight:600}
section>ul{list-style:none;padding:0;margin:0 0 18px}
section>ul>li{padding:12px 0 12px 28px;border-bottom:1px solid var(--rule);position:relative}
section>ul>li::before{content:"";position:absolute;left:4px;top:23px;width:10px;height:1px;background:var(--indigo)}

dl{margin:24px 0 8px;border-top:1px solid var(--text)}
dl>div{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:14px 0;border-bottom:1px solid var(--rule)}
dt{font-size:17px}
dd{margin:0;font:400 26px/1 var(--serif);white-space:nowrap}
dd small{display:block;text-align:right;font:13px/1.6 var(--sans);color:var(--quiet)}
dl+p{font-size:15px;color:var(--quiet)}

details{border-bottom:1px solid var(--rule)}
details:first-of-type{border-top:1px solid var(--rule)}
summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:56px;padding:10px 0;font:400 19px/1.35 var(--serif)}
summary::-webkit-details-marker{display:none}
summary::after{content:"";flex:none;width:9px;height:9px;border-right:1.5px solid var(--indigo);border-bottom:1.5px solid var(--indigo);transform:rotate(45deg);margin-right:6px}
details[open] summary::after{transform:rotate(-135deg)}
details p{color:var(--text)}

main>aside{margin:72px 0 0;padding:40px 28px;background:var(--wash);text-align:center}
main>aside h2{margin:0 0 10px;font-size:30px}

body>aside{position:fixed;left:0;right:0;bottom:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:#ffffff;border-top:1px solid var(--text)}
body>aside p{margin:0;font:italic 17px/1.25 var(--serif)}
body>aside a[href^="/go/start"]{min-height:44px;padding:0 16px;font-size:16px}

body>footer{margin-top:72px;padding-top:20px;padding-bottom:40px;border-top:1px solid var(--rule);font-size:14px;color:var(--quiet)}
body>footer p{margin:0 0 6px}
body>footer p:first-child{font:italic 17px/1.4 var(--serif);color:var(--text)}

@media (min-width:760px){
  body{padding-bottom:0}
  body>aside{display:none}
  h1{font-size:48px}
  h2{font-size:32px}
}

/* 360 px: кнопка в липкой панели в одну строку */
body>aside a[href^="/go/start"]{white-space:nowrap;flex:none}