@font-face{font-family:"Literata";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/literata-cyrillic-400-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Literata";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/literata-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Literata";font-style:italic;font-weight:400;font-display:swap;src:url(fonts/literata-cyrillic-400-italic.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Literata";font-style:italic;font-weight:400;font-display:swap;src:url(fonts/literata-latin-400-italic.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Literata";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/literata-cyrillic-600-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Literata";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/literata-latin-600-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-sans-cyrillic-400-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-sans-cyrillic-500-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/ibm-plex-sans-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/ibm-plex-sans-cyrillic-600-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
/* mc4-conf.ru — «сборник трудов»: монохром, один акцент, нумерация разделов, тонкие линейки */
:root{
  --paper:#F6F5F1; --card:#FFFFFF; --soft:#EEECE6; --ink:#1A1A1A; --ink2:#3B3A38; --muted:#6F6C66; --rule:#D6D2C8; --rule2:#BDB8AC;
  --acc:#8A2B1F; --acc-soft:#F3E7E3;
  --serif:Literata,Georgia,"Times New Roman",serif; --sans:"IBM Plex Sans","Segoe UI",Arial,sans-serif;
  --r:4px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.6 var(--sans);overflow-x:hidden}
img,svg{max-width:100%}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--ink);color:#fff;padding:8px 14px}
.skip:focus{left:12px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:28px;padding-right:28px}
.narrow{max-width:880px}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.18;margin:0;letter-spacing:-.005em}
h1{font-size:clamp(30px,4.2vw,50px)}
h2{font-size:clamp(23px,2.4vw,30px)}
.lead{font:400 clamp(17px,1.5vw,20px)/1.6 var(--serif);color:var(--ink2);margin:16px 0 0;max-width:760px}
.sc{font:500 12px/1.3 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.num{font-variant-numeric:tabular-nums lining-nums}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:9px 20px;border:1px solid var(--ink);border-radius:var(--r);background:transparent;font:500 15px/1 var(--sans);text-decoration:none;cursor:pointer}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#000}
.btn-line:hover{background:var(--ink);color:#fff}
.btn[disabled]{opacity:.4;pointer-events:none}

/* header */
.site-header{position:sticky;top:0;z-index:40;background:rgba(246,245,241,.95);backdrop-filter:blur(6px);border-bottom:1px solid var(--rule)}
.site-header::before{content:"";display:block;height:3px;background:var(--ink)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo-badge{display:flex;align-items:center;justify-content:center;padding-top:6px;width:38px;height:46px;border:1.5px solid var(--ink);border-radius:5px;position:relative;font:600 14px/1 var(--sans);letter-spacing:-.02em;background:var(--card)}
.logo-badge::before{content:"";position:absolute;top:5px;left:50%;width:12px;height:3px;border-radius:2px;background:var(--ink);transform:translateX(-50%)}
.logo-badge sup{font-size:9px;color:var(--acc);margin-left:1px}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font:600 18px/1.1 var(--serif)}
.logo-text span{font-size:12.5px;color:var(--muted);margin-top:3px}
.main-nav{display:flex;gap:2px;align-items:center}
.main-nav a{padding:8px 10px;text-decoration:none;font-size:14.5px;color:var(--ink2);border-bottom:2px solid transparent;white-space:nowrap}
.main-nav a i{font-style:normal;color:var(--muted);font-size:12px;margin-right:5px;font-variant-numeric:tabular-nums}
.main-nav a:hover{color:var(--ink)}
.main-nav a[aria-current=page]{border-bottom-color:var(--acc);color:var(--ink)}
.main-nav a[aria-current=page] i{color:var(--acc)}
.header-actions{display:flex;align-items:center;gap:8px}
.icon-btn{display:inline-grid;place-items:center;width:42px;height:42px;border:1px solid var(--rule);border-radius:var(--r);background:var(--card);cursor:pointer}
.icon-btn:hover{border-color:var(--ink)}
.menu-toggle{display:none}

/* search */
.search-modal{position:fixed;inset:0;z-index:90;background:rgba(26,26,26,.45);display:flex;align-items:flex-start;justify-content:center;padding:10vh 16px 16px}
.search-modal[hidden]{display:none}
.modal-open{overflow:hidden}
.search-box{width:100%;max-width:680px;background:var(--card);border:1px solid var(--ink);box-shadow:0 30px 70px rgba(0,0,0,.25)}
.search-field{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--rule)}
.search-field input{flex:1;border:0;outline:0;font-size:18px;background:transparent;min-width:0}
.search-close{border:1px solid var(--rule);background:var(--paper);padding:3px 8px;font-size:12px;cursor:pointer}
.search-results{list-style:none;margin:0;padding:6px;max-height:60vh;overflow:auto}
.search-results a{display:flex;gap:14px;padding:10px 12px;text-decoration:none}
.search-results a.active,.search-results a:hover{background:var(--soft)}
.sr-code{flex:none;font:500 13px/1.6 var(--sans);color:var(--acc);min-width:28px;font-variant-numeric:tabular-nums}
.search-results b{display:block;font:600 16px/1.3 var(--serif)}
.search-results small{display:block;color:var(--muted);font-size:13.5px;line-height:1.4;margin-top:3px}
.sr-empty{padding:16px;color:var(--muted)}

/* crumbs */
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:4px 0;margin:0 0 22px;padding:0;font-size:13.5px;color:var(--muted)}
.crumbs li+li::before{content:"/";margin:0 9px;color:var(--rule2)}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--ink);text-decoration:underline}

/* article head: «титул доклада» */
.a-head{padding:36px 0 30px;border-bottom:1px solid var(--rule)}
.a-meta-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 18px;margin-bottom:16px}
.a-no{font:600 15px/1 var(--sans);color:var(--acc);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.a-head h1{max-width:960px}
.abstract{margin-top:26px;max-width:880px;border-top:1px solid var(--ink);border-bottom:1px solid var(--rule);padding:16px 0 14px;display:grid;grid-template-columns:120px minmax(0,1fr);gap:8px 24px}
.abstract dt{font:500 12px/1.9 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.abstract dd{margin:0;font:400 17.5px/1.6 var(--serif);color:var(--ink2)}
.abstract dd.kw{font:400 15px/1.6 var(--sans);font-style:normal}
.abstract dd.kw span+span::before{content:" · ";color:var(--rule2)}
.facts{display:flex;flex-wrap:wrap;gap:6px 20px;margin-top:14px;font-size:13.5px;color:var(--muted)}
.facts b{color:var(--ink);font-weight:500}

/* article layout */
.a-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:60px;padding-top:40px;padding-bottom:30px}
.a-grid>*{min-width:0}
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:t;border-left:1px solid var(--rule)}
.toc li{counter-increment:t}
.toc a{display:flex;gap:10px;padding:5px 0 5px 14px;margin-left:-1px;border-left:2px solid transparent;text-decoration:none;font-size:14px;line-height:1.35;color:var(--ink2)}
.toc a::before{content:counter(t) ".";flex:none;min-width:20px;color:var(--muted);font-variant-numeric:tabular-nums}
.toc li.nonum a::before{content:"—"}
.toc a:hover{color:var(--ink)}
.toc a.active{border-left-color:var(--acc);color:var(--ink);font-weight:500}
.toc a.active::before{color:var(--acc)}
.side-tool{display:block;padding:14px 16px;border:1px solid var(--ink);border-radius:var(--r);text-decoration:none;background:var(--card)}
.side-tool small{display:block;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.side-tool b{display:block;font:600 16px/1.3 var(--serif);margin-top:4px}
.side-tool:hover{background:var(--ink);color:#fff}
.side-tool:hover small{color:#ccc}

/* prose */
.prose{font:400 18px/1.72 var(--serif);color:#222;max-width:740px;counter-reset:h2}
.prose>*:first-child{margin-top:0}
.prose h2{font-size:clamp(23px,2.3vw,28px);margin:54px 0 16px;counter-increment:h2;display:flex;gap:14px;align-items:baseline}
.prose h2::before{content:counter(h2) ".";font:500 .62em/1 var(--sans);color:var(--acc);min-width:26px;font-variant-numeric:tabular-nums}
.prose h2.nonum{counter-increment:none}
.prose h2.nonum::before{content:"§"}
.prose h3{font-size:20px;margin:32px 0 10px}
.prose p{margin:0 0 16px}
.prose a{color:var(--ink);text-decoration-color:var(--acc);text-underline-offset:3px;text-decoration-thickness:1px}
.prose a:hover{color:var(--acc)}
.prose ul,.prose ol{padding-left:24px;margin:0 0 18px}
.prose li{margin:6px 0}
.prose ul li::marker{color:var(--acc)}
.prose ol li::marker{font:500 15px var(--sans);color:var(--acc)}
.prose strong{font-weight:600;color:var(--ink)}
.prose sup{font:500 11px/1 var(--sans);color:var(--acc);margin-left:1px}
.prose hr{border:0;height:1px;background:var(--rule);margin:36px 0}
.table-wrap{overflow-x:auto;margin:24px 0 28px;border-top:2px solid var(--ink);border-bottom:2px solid var(--ink)}
.prose table{border-collapse:collapse;width:100%;font:400 15px/1.45 var(--sans);min-width:520px}
.prose th{text-align:left;font-weight:600;padding:10px 12px;border-bottom:1px solid var(--ink);font-size:14px}
.prose td{padding:9px 12px;border-top:1px solid var(--rule);vertical-align:top}
.prose blockquote{margin:24px 0 26px;padding:4px 0 4px 22px;border-left:3px solid var(--ink);font-style:italic;color:var(--ink2)}
.prose blockquote p{margin:0 0 8px}
.prose blockquote p:last-child{margin:0}
.callout{margin:26px 0;padding:16px 20px;background:var(--card);border:1px solid var(--rule);border-left:3px solid var(--acc);font-size:17px}
.callout-label{font:500 12px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--acc);margin-bottom:8px}
.callout p:last-child{margin:0}
.refs{font:400 14.5px/1.5 var(--sans);color:var(--ink2)}
.refs p{margin:0 0 8px;padding-left:34px;text-indent:-34px}

/* faq */
.faq{margin-top:54px}
.faq h2{font-size:clamp(23px,2.3vw,28px);margin-bottom:12px}
.faq-item{border-top:1px solid var(--rule)}
.faq-item:last-child{border-bottom:1px solid var(--rule)}
.faq-item summary{list-style:none;cursor:pointer;padding:15px 36px 15px 0;font:600 17px/1.4 var(--serif);position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:4px;top:12px;font:400 24px/1 var(--sans);color:var(--acc)}
.faq-item[open] summary::after{content:"−"}
.faq-item div{padding:0 0 16px;color:var(--ink2);font:400 16.5px/1.6 var(--serif)}
.faq-item p{margin:0}

/* after article */
.pn-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0 48px}
.pn{display:block;padding:16px 0;border-top:1px solid var(--ink);text-decoration:none}
.pn small{display:block;color:var(--muted);font-size:13px;margin-bottom:4px}
.pn b{font:600 17px/1.35 var(--serif)}
.pn:hover b{color:var(--acc)}
.pn.next{text-align:right;grid-column:2}
.block-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px 20px;margin-bottom:18px;padding-bottom:10px;border-bottom:1px solid var(--ink)}
.block-head a{font-size:15px;color:var(--ink2)}
.block-head .sc{margin-right:auto;margin-left:14px}
.block-lead{color:var(--ink2);max-width:760px;margin:0 0 22px;font:400 17px/1.6 var(--serif)}

/* программа (список статей) */
.prog{list-style:none;margin:0;padding:0}
.prog li{border-bottom:1px solid var(--rule)}
.prog a{display:grid;grid-template-columns:64px minmax(0,1fr) 90px;gap:16px;padding:16px 0;text-decoration:none;align-items:baseline}
.prog .pg-no{font:500 15px/1.4 var(--sans);color:var(--acc);font-variant-numeric:tabular-nums}
.prog b{display:block;font:600 19px/1.3 var(--serif)}
.prog small{display:block;color:var(--muted);font-size:14.5px;line-height:1.5;margin-top:4px}
.prog .pg-min{font-size:13px;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.prog a:hover b{color:var(--acc)}
.prog li.is-cur b{color:var(--muted)}
.hub{padding-top:30px;padding-bottom:20px}
.other-secs{margin-top:40px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip-link{display:inline-flex;gap:8px;padding:7px 12px;border:1px solid var(--rule);border-radius:var(--r);background:var(--card);text-decoration:none;font-size:14.5px}
.chip-link i{font-style:normal;color:var(--acc);font-variant-numeric:tabular-nums}
.chip-link:hover{border-color:var(--ink)}
.block-tools{padding-top:34px;padding-bottom:60px}

/* tools strip */
.tools-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.tool-card{display:flex;flex-direction:column;gap:6px;padding:18px 18px 18px 0;text-decoration:none;border-right:1px solid var(--rule)}
.tool-card+.tool-card{padding-left:18px}
.tool-card:last-child{border-right:0}
.tool-card .tc-no{font:500 12px/1 var(--sans);letter-spacing:.14em;color:var(--acc)}
.tool-card b{font:600 18px/1.3 var(--serif)}
.tool-card small{color:var(--muted);font-size:14px;line-height:1.45}
.tool-card:hover b{text-decoration:underline;text-decoration-color:var(--acc)}

/* home */
.title-page{padding:54px 0 46px;border-bottom:1px solid var(--rule);text-align:center}
.tp-top{display:flex;justify-content:center;gap:28px;flex-wrap:wrap}
.title-page h1{margin:26px auto 0;max-width:900px;font-size:clamp(32px,4.8vw,58px)}
.title-page .lead{margin:20px auto 0;text-align:center}
.tp-rule{width:120px;height:1px;background:var(--ink);margin:28px auto 0}
.tp-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));max-width:880px;margin:30px auto 0;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.tp-facts div{padding:16px 12px}
.tp-facts div+div{border-left:1px solid var(--rule)}
.tp-facts b{display:block;font:600 30px/1.1 var(--serif);font-variant-numeric:lining-nums}
.tp-facts span{display:block;font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.4}
.tp-cta{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:30px}
.block{padding-top:60px;padding-bottom:6px}
/* ladder */
.ladder{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:0;border:1px solid var(--ink);background:var(--card)}
.ld-steps{list-style:none;margin:0;padding:0;border-right:1px solid var(--ink)}
.ld-steps li+li{border-top:1px solid var(--rule)}
.ld-btn{display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:12px;align-items:center;width:100%;padding:14px 18px;background:none;border:0;text-align:left;cursor:pointer}
.ld-btn .n{font:500 14px/1 var(--sans);color:var(--muted);font-variant-numeric:tabular-nums}
.ld-btn b{font:600 17px/1.3 var(--serif)}
.ld-btn small{display:block;font-size:13px;color:var(--muted);font-weight:400;font-family:var(--sans);margin-top:2px}
.ld-btn .bar{display:flex;gap:3px}
.ld-btn .bar i{width:8px;height:16px;border:1px solid var(--ink);background:transparent}
.ld-btn .bar i.on{background:var(--ink)}
.ld-btn:hover{background:var(--soft)}
.ld-btn[aria-pressed=true]{background:var(--ink);color:#fff}
.ld-btn[aria-pressed=true] .n,.ld-btn[aria-pressed=true] small{color:#C9C6BF}
.ld-btn[aria-pressed=true] .bar i{border-color:#fff}
.ld-btn[aria-pressed=true] .bar i.on{background:#fff}
.ld-panel{padding:24px 26px}
.ld-panel[hidden]{display:none}
.ld-panel h3{font-size:22px;margin-bottom:10px}
.ld-panel dl{margin:16px 0 0;display:grid;grid-template-columns:150px minmax(0,1fr);border-top:1px solid var(--ink)}
.ld-panel dt,.ld-panel dd{padding:10px 0;border-bottom:1px solid var(--rule);margin:0;font-size:15px;line-height:1.45}
.ld-panel dt{color:var(--muted);padding-right:12px}
.ld-panel p{font:400 16.5px/1.6 var(--serif);color:var(--ink2);margin:0}
.ld-panel .ld-go{display:inline-block;margin-top:16px;font-weight:500}
/* program timetable */
.timetable{width:100%;border-collapse:collapse;border-top:2px solid var(--ink);border-bottom:2px solid var(--ink)}
.timetable th,.timetable td{text-align:left;vertical-align:top;padding:13px 12px 13px 0;border-top:1px solid var(--rule)}
.timetable thead th{border-top:0;border-bottom:1px solid var(--ink);font:500 12px/1.3 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.timetable td.tt-when{width:150px;font:500 15px/1.4 var(--sans);font-variant-numeric:tabular-nums;white-space:nowrap}
.timetable td.tt-what b{display:block;font:600 17.5px/1.35 var(--serif)}
.timetable td.tt-what span{display:block;font-size:14.5px;color:var(--ink2);margin-top:3px;line-height:1.5}
.timetable td.tt-link{width:200px;font-size:14.5px}
.timetable td.tt-link a{color:var(--ink2)}
.timetable tr.tt-key td.tt-when{color:var(--acc)}
/* sections index */
.sec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 40px}
.sec-card{padding:18px 0 14px;border-top:1px solid var(--ink)}
.sec-card .sc-head{display:flex;gap:12px;align-items:baseline;text-decoration:none}
.sec-card .sc-head i{font:500 14px/1 var(--sans);font-style:normal;color:var(--acc);font-variant-numeric:tabular-nums}
.sec-card .sc-head b{font:600 21px/1.25 var(--serif)}
.sec-card .sc-head small{margin-left:auto;color:var(--muted);font-size:13px}
.sec-card ul{list-style:none;margin:10px 0 0;padding:0 0 0 26px}
.sec-card li a{display:block;padding:3px 0;font-size:15px;color:var(--ink2);text-decoration:none}
.sec-card li a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--acc)}
.redflags{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px;list-style:none;margin:0;padding:0;counter-reset:rf}
.redflags li{counter-increment:rf;display:grid;grid-template-columns:34px minmax(0,1fr);padding:12px 0;border-top:1px solid var(--rule);font:400 16.5px/1.55 var(--serif)}
.redflags li::before{content:counter(rf,upper-roman) ".";font:500 14px/1.7 var(--sans);color:var(--acc)}
.home-faq{padding-bottom:60px}
.home-faq .faq{margin-top:0}

/* footer */
.site-footer{border-top:3px solid var(--ink);background:var(--paper);padding:44px 0 30px;margin-top:40px}
.f-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px 30px}
.f-col h3{font:600 16px/1.3 var(--serif);margin:0 0 10px;padding-bottom:8px;border-bottom:1px solid var(--rule)}
.f-col h3 a{text-decoration:none}
.f-col h3 i{font:500 13px var(--sans);font-style:normal;color:var(--acc);margin-right:8px}
.f-col h3.f-sub{margin-top:20px}
.f-col ul{list-style:none;margin:0;padding:0}
.f-col li a{display:block;padding:3px 0;font-size:14px;text-decoration:none;color:var(--ink2)}
.f-col li a:hover{color:var(--ink);text-decoration:underline}
.f-bottom{margin-top:34px;padding-top:18px;border-top:1px solid var(--rule);font-size:13.5px;color:var(--muted)}
.f-bottom p{max-width:900px;margin:0 0 10px}

/* tools pages */
.tool-head{padding-bottom:30px}
.tool-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:32px;padding-top:34px;padding-bottom:30px;align-items:start}
.tool-grid>*{min-width:0}
.panel{background:var(--card);border:1px solid var(--ink);padding:24px}
.tool-side{display:flex;flex-direction:column;gap:16px;position:sticky;top:96px}
.note-card{border-top:1px solid var(--ink);padding:14px 0 0;font-size:15px;line-height:1.55;color:var(--ink2)}
.note-card p{margin:0 0 10px}
.note-card ul{margin:0;padding-left:18px}
.note-card li{margin:4px 0}
.tool-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.lbl{display:block;font-weight:500;margin-bottom:8px}
.q{border:0;margin:0 0 22px;padding:0}
.q legend{font:600 18px/1.35 var(--serif);margin-bottom:10px;padding:0}
.q legend i{font:500 13px var(--sans);font-style:normal;color:var(--acc);margin-right:8px}
.segs{display:flex;flex-wrap:wrap;gap:6px}
label.seg{position:relative}
label.seg input{position:absolute;opacity:0;pointer-events:none}
label.seg span{display:inline-block;padding:8px 14px;border:1px solid var(--rule2);border-radius:var(--r);background:var(--card);cursor:pointer;font-size:15px}
label.seg input:checked+span{background:var(--ink);border-color:var(--ink);color:#fff}
label.seg input:focus-visible+span{outline:2px solid var(--acc);outline-offset:2px}
.result{margin-top:8px;border-top:2px solid var(--ink);padding-top:18px}
.verdict{font:600 22px/1.3 var(--serif);margin:0 0 6px}
.verdict-tag{display:inline-block;font:500 12px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;padding:6px 10px;border:1px solid var(--ink);margin-bottom:12px}
.verdict-tag.good{background:var(--ink);color:#fff}
.verdict-tag.warn{border-color:var(--acc);color:var(--acc)}
.res-list{margin:12px 0 0;padding-left:20px;font:400 16px/1.6 var(--serif)}
.res-list li{margin:5px 0}
textarea.big{width:100%;min-height:300px;padding:16px;border:1px solid var(--rule2);border-radius:var(--r);background:#FDFDFB;font:400 16.5px/1.6 var(--serif);resize:vertical}
textarea.big:focus{border-color:var(--ink);outline:none}
.stat{display:flex;align-items:baseline;gap:8px}
.stat b{font:600 54px/1 var(--serif);font-variant-numeric:lining-nums tabular-nums}
.stat span{color:var(--muted)}
.meter{position:relative;height:8px;background:var(--soft);margin:14px 0 6px;border:1px solid var(--rule2)}
.meter i{position:absolute;left:0;top:0;bottom:0;background:var(--ink);width:0;transition:width .2s}
.meter i.over{background:var(--acc)}
.stat-rows{display:grid;grid-template-columns:1fr auto;gap:4px 12px;font-size:14.5px;margin:14px 0}
.stat-rows span:nth-child(even){font-variant-numeric:tabular-nums;font-weight:500}
.checks{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.checks li{display:flex;gap:10px;font-size:14.5px;line-height:1.4}
.checks li::before{content:"";flex:none;width:14px;height:14px;margin-top:3px;border:1px solid var(--ink)}
.checks li.ok::before{background:var(--ink)}
.checks li.bad::before{border-color:var(--acc);background:repeating-linear-gradient(45deg,var(--acc) 0 2px,transparent 2px 4px)}
.inp{height:44px;padding:0 12px;border:1px solid var(--rule2);border-radius:var(--r);background:#fff;font-size:16px}
.inp:focus{border-color:var(--ink);outline:none}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
/* timer */
.dk-stage{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:28px;align-items:center;margin:20px 0}
.dk-time{font:600 84px/1 var(--serif);font-variant-numeric:tabular-nums lining-nums;letter-spacing:-.02em}
.dk-time.warn{color:var(--acc)}
.dk-sub{color:var(--muted);margin-top:6px}
.dk-slides{display:flex;flex-wrap:wrap;gap:4px;margin-top:16px}
.dk-slides i{width:26px;height:18px;border:1px solid var(--ink);font:500 10px/16px var(--sans);font-style:normal;text-align:center;color:var(--muted)}
.dk-slides i.done{background:var(--ink);color:#fff}
.dk-slides i.cur{background:var(--acc);border-color:var(--acc);color:#fff}
.dk-bar{height:6px;background:var(--soft);margin-top:18px;position:relative}
.dk-bar i{position:absolute;left:0;top:0;bottom:0;background:var(--ink);width:0}
.dk-log{margin-top:16px;font-size:14.5px}
/* plan */
.plan-list{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.plan-list li{display:grid;grid-template-columns:175px minmax(0,1fr);gap:14px;padding:12px 0;border-bottom:1px solid var(--rule)}
.plan-list .pd{font:500 15px/1.4 var(--sans);font-variant-numeric:tabular-nums}
.plan-list .pd small{display:block;color:var(--muted);font-weight:400;font-size:12.5px}
.plan-list b{font:600 17px/1.35 var(--serif);display:block}
.plan-list span{font-size:14.5px;color:var(--ink2);display:block;margin-top:2px}
.plan-list li.past{opacity:.5}
.plan-list li.key .pd{color:var(--acc)}
.tools-big{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}
.tool-big{display:block;padding:22px 0;border-top:1px solid var(--ink);text-decoration:none}
.tool-big i{font:500 13px var(--sans);font-style:normal;color:var(--acc);letter-spacing:.14em}
.tool-big b{display:block;font:600 24px/1.25 var(--serif);margin:6px 0}
.tool-big span{color:var(--ink2)}
.tool-big:hover b{text-decoration:underline;text-decoration-color:var(--acc)}
.sitemap-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 40px;padding-top:34px;padding-bottom:40px}
.sitemap-grid h2{font-size:20px;margin-bottom:8px;padding-bottom:6px;border-bottom:1px solid var(--ink)}
.sitemap-grid ul{margin:0;padding-left:18px}
.sitemap-grid li{margin:4px 0}

@media (max-width:1150px){
  .main-nav a{padding:8px 7px;font-size:14px}
  .main-nav a i{display:none}
}
@media (max-width:1020px){
  .menu-toggle{display:inline-grid}
  .main-nav{display:none}
  .main-nav.open{display:flex;flex-direction:column;align-items:stretch;position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:1px solid var(--ink);padding:6px 28px 14px;box-shadow:0 20px 40px rgba(0,0,0,.1)}
  .main-nav.open a{padding:12px 0;border-bottom:1px solid var(--rule)}
  .main-nav.open a i{display:inline}
  .tools-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tool-card:nth-child(2){border-right:0}
  .tool-card:nth-child(3){padding-left:0}
  .tool-card:nth-child(n+3){border-top:1px solid var(--rule)}
  .sec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .f-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .a-grid{grid-template-columns:1fr;gap:10px}
  .a-side{order:2}
  .side-sticky{position:static}
  .a-side .toc{display:none}
  .tool-grid{grid-template-columns:1fr}
  .tool-side{position:static}
  .ladder{grid-template-columns:1fr}
  .ld-steps{border-right:0;border-bottom:1px solid var(--ink)}
  .redflags{grid-template-columns:1fr}
  .tools-big{grid-template-columns:1fr}
  .dk-stage{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding-left:16px;padding-right:16px}
  .main-nav.open{padding:6px 16px 14px}
  .header-inner{height:58px}
  .logo-text span{display:none}
  .abstract{grid-template-columns:1fr;gap:4px}
  .prose{font-size:17px}
  .prose h2{margin-top:42px}
  .prog a{grid-template-columns:44px minmax(0,1fr)}
  .prog .pg-min{display:none}
  .tools-grid{grid-template-columns:1fr}
  .tool-card,.tool-card+.tool-card{padding:16px 0;border-right:0;border-top:1px solid var(--rule)}
  .tool-card:first-child{border-top:0}
  .sec-grid,.f-grid,.sitemap-grid{grid-template-columns:1fr}
  .tp-facts{grid-template-columns:1fr}
  .tp-facts div+div{border-left:0;border-top:1px solid var(--rule)}
  .pn-row{grid-template-columns:1fr}
  .pn.next{grid-column:1;text-align:left}
  .timetable thead{display:none}
  .timetable tr{display:block;border-top:1px solid var(--rule);padding:10px 0}
  .timetable td{display:block;border:0;padding:2px 0;width:auto!important}
  .ld-panel dl{grid-template-columns:1fr}
  .ld-panel dt{border-bottom:0;padding-bottom:0}
  .row2{grid-template-columns:1fr}
  .dk-time{font-size:64px}
  .plan-list li{grid-template-columns:1fr;gap:2px}
}
@media print{
  .site-header,.site-footer,.a-side,.after,.block-tools,.search-modal{display:none!important}
  body{background:#fff}
  .a-grid{display:block}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}