/* lab-ege.ru — «Лаборатория ЕГЭ-2027». Стиль «журнал правок»: миллиметровка, чернила, цвета diff (добавлено / удалено / перенесено). */
@font-face{font-family:"Fira Sans";font-weight:400;font-display:swap;src:url(fonts/fira-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:"Fira Sans";font-weight:400;font-display:swap;src:url(fonts/fira-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+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Fira Sans";font-weight:500;font-display:swap;src:url(fonts/fira-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:"Fira Sans";font-weight:500;font-display:swap;src:url(fonts/fira-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+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Fira Sans";font-weight:600;font-display:swap;src:url(fonts/fira-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:"Fira Sans";font-weight:600;font-display:swap;src:url(fonts/fira-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+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Fira Sans Condensed";font-weight:600;font-display:swap;src:url(fonts/fira-sans-condensed-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:"Fira Sans Condensed";font-weight:600;font-display:swap;src:url(fonts/fira-sans-condensed-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+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Fira Sans Condensed";font-weight:700;font-display:swap;src:url(fonts/fira-sans-condensed-cyrillic-700-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Fira Sans Condensed";font-weight:700;font-display:swap;src:url(fonts/fira-sans-condensed-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Fira Code";font-weight:400;font-display:swap;src:url(fonts/fira-code-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:"Fira Code";font-weight:400;font-display:swap;src:url(fonts/fira-code-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+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Fira Code";font-weight:500;font-display:swap;src:url(fonts/fira-code-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:"Fira Code";font-weight:500;font-display:swap;src:url(fonts/fira-code-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+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --bg:#F6F7F3;--grid:rgba(16,33,63,.055);--paper:#FFFFFF;--soft:#EEF1EC;--ink:#10213F;--ink-2:#36435C;--muted:#677189;--line:#D5DAE3;--line-2:#B4BCCB;
  --blue:#1F4FD1;--blue-soft:#E4ECFF;--add:#1A7F37;--add-bg:#DAFBE1;--del:#CF222E;--del-bg:#FFEBE9;--mov:#9A6700;--mov-bg:#FFF4C4;--mod:#0969DA;--mod-bg:#DDF4FF;
  --f-text:"Fira Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--f-head:"Fira Sans Condensed","Fira Sans",system-ui,sans-serif;--f-mono:"Fira Code",ui-monospace,Consolas,monospace;
  --shadow:0 1px 0 rgba(16,33,63,.06),0 14px 34px -24px rgba(16,33,63,.45);--r:10px}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:96px}
body{margin:0;color:var(--ink);font:400 17px/1.7 var(--f-text);-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-color:var(--bg);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
body.modal-open{overflow:hidden}
[hidden]{display:none!important}
svg{max-width:100%}
a{color:var(--blue);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--ink)}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 28px}
.narrow{max-width:900px}
.mono{font-family:var(--f-mono);font-weight:400;letter-spacing:0}
.muted{color:var(--muted)}
.small{font-size:14px}
.skip{position:absolute;left:-9999px;top:6px;background:var(--ink);color:#fff;padding:8px 14px;z-index:100}
.skip:focus{left:12px}
h1,h2,h3{font-family:var(--f-head);font-weight:700;line-height:1.12;margin:0;color:var(--ink);letter-spacing:-.005em}
.side-cap{font-size:12.5px;color:var(--muted);margin:0 0 12px;font-weight:400}

.st{display:inline-block;font:500 11.5px/1 var(--f-mono);padding:4px 7px;border-radius:5px;white-space:nowrap;font-style:normal}
.st-chg{background:var(--mov-bg);color:var(--mov);border:1px solid #E7C76A}
.st-same{background:var(--soft);color:var(--muted);border:1px solid var(--line)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;font-size:12.5px;padding:5px 10px;border-radius:999px;background:var(--paper);border:1px solid var(--line);color:var(--ink-2)}
.chip-warn{background:var(--mov-bg);border-color:#E7C76A;color:var(--mov)}
.chip-link{display:inline-flex;gap:6px;align-items:baseline;padding:8px 14px;border-radius:999px;background:var(--paper);border:1px solid var(--line);color:var(--ink);text-decoration:none;font-size:15px}
.chip-link .mono{color:var(--blue);font-size:13px}
.chip-link:hover{border-color:var(--ink);color:var(--ink)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:8px;font:600 15.5px/1 var(--f-text);text-decoration:none;cursor:pointer;border:1.5px solid transparent}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--blue);color:#fff}
.btn-line{border-color:var(--ink);color:var(--ink);background:var(--paper)}
.btn-line:hover{background:var(--ink);color:#fff}
.icon-btn{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:8px;border:1px solid var(--line-2);background:var(--paper);color:var(--ink);cursor:pointer}
.icon-btn:hover{border-color:var(--ink)}

/* ticker + header */
.ticker{background:var(--ink);color:#CFD7E6;font-size:12.5px}
.tk-inner{display:flex;align-items:center;gap:12px;min-height:34px;padding-top:6px;padding-bottom:6px}
.tk-inner b{color:#FFD866;font-weight:500}
.tk-dot{width:8px;height:8px;border-radius:50%;background:#FFD866;flex:none;box-shadow:0 0 0 3px rgba(255,216,102,.25)}
@media (prefers-reduced-motion:no-preference){.tk-dot{animation:blink 1.8s ease-in-out infinite}}
@keyframes blink{50%{opacity:.35}}
.tk-date{margin-left:auto;color:#8F9BB3;white-space:nowrap}
@media (max-width:640px){.tk-date{display:none}}
.site-header{position:sticky;top:0;z-index:40;background:rgba(246,247,243,.94);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:70px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.logo-mark svg{width:38px;height:38px;display:block;fill:none;stroke:var(--ink);stroke-width:2.2;stroke-linejoin:round;stroke-linecap:round}
.logo-mark .lm-fill{stroke:var(--add);stroke-width:3}
.logo-text{display:flex;flex-direction:column;line-height:1.05}
.logo-text b{font:600 20px/1 var(--f-mono);letter-spacing:-.02em}
.logo-text b i{color:var(--add);font-style:normal}
.logo-text span{font-size:12.5px;color:var(--muted);margin-top:3px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{display:flex;align-items:baseline;gap:6px;padding:8px 11px;border-radius:8px;color:var(--ink-2);text-decoration:none;font-size:15px;white-space:nowrap}
.main-nav a .mono{font-size:11.5px;color:var(--muted)}
.main-nav a:hover{background:var(--soft);color:var(--ink)}
.main-nav a[aria-current]{background:var(--ink);color:#fff}
.main-nav a[aria-current] .mono{color:#9FB4E8}
.header-actions{display:flex;align-items:center;gap:10px}
.header-cta{padding:10px 16px;font-size:14.5px;white-space:nowrap}
.menu-toggle{display:none}
@media (max-width:1180px){.header-cta{display:none}}
@media (max-width:1000px){
  .menu-toggle{display:inline-grid}
  .main-nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;background:var(--bg);padding:10px 20px 20px;border-bottom:1px solid var(--line);display:none;margin:0}
  .main-nav.open{display:flex}
  .main-nav a{font-size:17px;padding:12px}
  .header-actions{margin-left:auto}
}
@media (max-width:560px){.wrap{padding:0 16px}.logo-text span{display:none}}

/* search */
.search-modal{position:fixed;inset:0;z-index:80;background:rgba(16,33,63,.45);display:flex;justify-content:center;align-items:flex-start;padding:10vh 16px 16px}
.search-box{width:100%;max-width:660px;background:var(--paper);border:1px solid var(--line-2);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
.search-field{display:flex;align-items:center;gap:10px;padding:15px 16px;border-bottom:1px solid var(--line);color:var(--muted)}
.search-field input{flex:1;border:0;background:transparent;color:var(--ink);font:400 18px var(--f-text);outline:none;min-width:0}
.search-close{font:500 11px var(--f-mono);color:var(--muted);background:var(--soft);border:1px solid var(--line);padding:5px 8px;border-radius:5px;cursor:pointer}
.search-results{list-style:none;margin:0;padding:6px;max-height:60vh;overflow:auto}
.search-results a{display:flex;gap:12px;align-items:flex-start;padding:10px 12px;border-radius:8px;color:var(--ink);text-decoration:none}
.search-results a.active,.search-results a:hover{background:var(--soft)}
.search-results b{display:block;font-weight:600;font-size:15.5px;line-height:1.35}
.search-results small{display:block;color:var(--muted);font-size:13px;line-height:1.4;margin-top:2px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sr-code{flex:none;font:500 11px var(--f-mono);color:var(--blue);background:var(--blue-soft);padding:4px 6px;border-radius:5px;margin-top:2px}
.sr-empty{padding:16px;color:var(--muted)}

.crumbs ol{display:flex;flex-wrap:wrap;gap:0;list-style:none;margin:0 0 22px;padding:0;font-size:13.5px;color:var(--muted)}
.crumbs li+li::before{content:"/";margin:0 6px;color:var(--line-2)}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--ink)}

/* page head */
.a-head{padding:30px 0 34px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.75),rgba(255,255,255,0))}
.ah-tag{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;font-size:12.5px}
.ah-tag span{padding:4px 9px;border-radius:6px;background:var(--blue-soft);color:var(--blue)}
.ah-tag span+span{background:var(--paper);color:var(--muted);border:1px solid var(--line)}
.a-head h1{font-size:clamp(30px,3.9vw,50px);max-width:24ch;margin-bottom:14px}
.a-head .lead{font-size:clamp(17px,1.5vw,19px);color:var(--ink-2);max-width:72ch;margin:0 0 18px}

/* article */
.a-grid{display:grid;grid-template-columns:270px minmax(0,1fr);gap:52px;padding-top:40px;padding-bottom:20px}
.side-sticky{position:sticky;top:100px;display:flex;flex-direction:column;gap:16px}
.toc{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:14px 14px 10px}
.toc ol{list-style:none;margin:0;padding:0;max-height:calc(100vh - 290px);overflow:auto}
.toc a{display:grid;grid-template-columns:24px 1fr;padding:5px 0;color:var(--ink-2);text-decoration:none;font-size:14px;line-height:1.35}
.toc .tree{color:var(--line-2);font-size:13px}
.toc a:hover{color:var(--ink)}
.toc a.active{color:var(--blue);font-weight:500}
.toc a.active .tree{color:var(--blue)}
.side-tool{display:flex;gap:12px;align-items:center;padding:13px 14px;border-radius:var(--r);background:var(--ink);color:#fff;text-decoration:none}
.side-tool small{display:block;font-size:11.5px;color:#9FB4E8}
.side-tool b{font-weight:600;font-size:15.5px}
.side-tool .tc-icon{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.25)}
.side-tool .tc-icon svg{stroke:#fff}
.side-tool:hover{background:var(--blue);color:#fff}
@media (max-width:980px){.a-grid{grid-template-columns:1fr;gap:0;padding-top:24px}.side-sticky{position:static;margin-bottom:26px}.toc ol{max-height:none}}

.prose{min-width:0;max-width:780px}
.prose>p:first-of-type{font-size:18.5px}
.prose p{margin:0 0 1.05em}
.prose>h2{font-size:clamp(25px,2.5vw,31px);margin:2.1em 0 .7em}
.prose>h2::before{content:"## ";font:500 .62em var(--f-mono);color:var(--add);vertical-align:.18em}
.prose>h2#istochniki::before{content:"// ";color:var(--muted)}
.prose h3{font-family:var(--f-text);font-weight:600;font-size:19px;margin:1.6em 0 .5em;letter-spacing:0}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.2em}
.prose li{margin:.35em 0}
.prose ul li::marker{color:var(--add)}
.prose ol li::marker{font-family:var(--f-mono);font-size:.85em;color:var(--blue)}
.prose strong{font-weight:600}
.prose sup{font:500 11px var(--f-mono);color:var(--blue);margin-left:1px}
.prose code{font:400 .9em var(--f-mono);background:var(--soft);padding:1px 5px;border-radius:4px}
.prose blockquote{margin:1.4em 0;padding:4px 0 4px 18px;border-left:3px solid var(--line-2);color:var(--ink-2)}
.prose #istochniki~p{font-size:14.5px;line-height:1.55;color:var(--ink-2);font-family:var(--f-text);padding:8px 12px;background:var(--paper);border:1px solid var(--line);border-radius:8px;margin-bottom:8px}
.table-wrap{overflow-x:auto;margin:1.5em 0 1.7em;border:1px solid var(--line);border-radius:var(--r);background:var(--paper)}
.table-wrap table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.5;min-width:520px}
.table-wrap th,.table-wrap td{padding:10px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.table-wrap thead th{font:500 12.5px/1.4 var(--f-mono);color:var(--muted);background:var(--soft)}
.table-wrap tbody tr:last-child td{border-bottom:0}
.table-wrap tbody tr:hover td{background:#FAFBFD}
.callout{margin:1.6em 0;padding:14px 18px 6px;border-radius:var(--r);background:var(--blue-soft);border:1px solid #BCD0FF}
.callout-label{font:500 12.5px/1 var(--f-mono);color:var(--blue);margin-bottom:10px;text-transform:uppercase}
.callout-label::before{content:"> "}
.callout-warn{background:var(--mov-bg);border-color:#E7C76A}
.callout-warn .callout-label{color:var(--mov)}
.callout p{margin:0 0 .8em}

/* diff box */
.diff{border:1px solid var(--line-2);border-radius:var(--r);background:var(--paper);overflow:hidden;margin:0 0 2em;box-shadow:var(--shadow)}
.diff-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 14px;background:var(--soft);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-2)}
.diff-lines{list-style:none;margin:0;padding:0;font-size:15px}
.diff-lines li{display:grid;grid-template-columns:30px 76px 1fr;align-items:baseline;border-bottom:1px solid rgba(16,33,63,.06);line-height:1.45}
.diff-lines li>span{padding:8px 0}
.d-sign{font:600 15px var(--f-mono);text-align:center}
.d-no{font:500 13px var(--f-mono);color:var(--ink-2)}
.d-txt{padding-right:14px!important}
.d-add{background:var(--add-bg)}.d-add .d-sign{color:var(--add)}
.d-del{background:var(--del-bg)}.d-del .d-sign{color:var(--del)}.d-del .d-txt{text-decoration:line-through;text-decoration-color:rgba(207,34,46,.45)}
.d-mov{background:var(--mov-bg)}.d-mov .d-sign{color:var(--mov)}
.d-mod{background:var(--mod-bg)}.d-mod .d-sign{color:var(--mod)}
.d-meta,.d-same{background:var(--paper)}.d-meta .d-sign,.d-same .d-sign{color:var(--muted)}
.d-meta .d-txt{font-weight:600}
.diff-foot{padding:7px 14px;font-size:12px;color:var(--muted);background:var(--soft)}
@media (max-width:560px){.diff-lines li{grid-template-columns:26px 58px 1fr;font-size:14.5px}}

.faq{margin-top:3em}
.faq h2{font-size:clamp(25px,2.5vw,31px);margin-bottom:14px}
.faq-item{border:1px solid var(--line);border-radius:var(--r);background:var(--paper);margin-bottom:8px}
.faq-item summary{list-style:none;cursor:pointer;padding:14px 46px 14px 16px;font-weight:600;position:relative;line-height:1.45}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:16px;top:12px;font:500 20px var(--f-mono);color:var(--add)}
.faq-item[open] summary::after{content:"−";color:var(--del)}
.faq-item>div{padding:0 16px 6px;color:var(--ink-2)}

.after{padding-top:26px}
.pn-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:40px}
.pn{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:var(--r);border:1px solid var(--line);background:var(--paper);text-decoration:none;color:var(--ink)}
.pn small{font-size:12.5px;color:var(--muted)}
.pn b{font:700 19px/1.25 var(--f-head)}
.pn.next{text-align:right;grid-column:2}
.pn:hover{border-color:var(--ink);color:var(--ink)}
@media (max-width:640px){.pn-row{grid-template-columns:1fr}.pn.next{grid-column:auto}}
.block-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.block-head h2{font-size:clamp(26px,3vw,38px)}
.block-head a{font-weight:500;font-size:15px;text-decoration:none}

.pcards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.pcard{display:flex;flex-direction:column;gap:6px;padding:16px 18px;border-radius:var(--r);border:1px solid var(--line);background:var(--paper);text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.pcard:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}
.pc-top{display:flex;justify-content:space-between;gap:8px;align-items:center}
.pc-top .mono{font-size:11.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pcard b{font:700 20px/1.2 var(--f-head)}
.pc-text{font-size:14.5px;line-height:1.5;color:var(--ink-2)}
@media (max-width:960px){.pcards{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.pcards{grid-template-columns:1fr}}
.hub{padding-top:34px}
.other-secs{margin-top:40px}
.other-secs>div{display:flex;flex-wrap:wrap;gap:8px}
.hub-exams{margin-bottom:30px}

/* tools */
.block-tools{padding-top:40px;padding-bottom:70px}
.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.tool-card{display:flex;align-items:flex-start;gap:12px;padding:18px;border-radius:var(--r);border:1px solid var(--line);background:var(--paper);text-decoration:none;color:var(--ink)}
.tool-card:hover{border-color:var(--ink);color:var(--ink)}
.tc-icon{flex:none;width:42px;height:42px;border-radius:9px;display:grid;place-items:center;background:var(--blue-soft);border:1px solid #BCD0FF}
.tc-icon svg{width:22px;height:22px;stroke:var(--blue);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tc-body{display:flex;flex-direction:column;gap:4px;flex:1;min-width:0}
.tc-body b{font:700 18px/1.2 var(--f-head)}
.tc-body small{color:var(--muted);font-size:14px;line-height:1.45}
.tc-go{color:var(--add)}
.tools-grid.compact .tc-body small{display:none}
.tools-grid.compact .tool-card{align-items:center;padding:14px}
@media (max-width:1060px){.tools-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.tools-grid{grid-template-columns:1fr}}

/* home */
.home-hero{padding:40px 0 50px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:44px;align-items:start}
.hero-text h1{font-size:clamp(36px,4.6vw,62px);line-height:1.04;margin-bottom:18px;max-width:18ch}
.hero-text .lead{font-size:clamp(17px,1.6vw,19.5px);color:var(--ink-2);margin:0 0 26px;max-width:60ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.counters{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.ctr{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--r);background:var(--paper);border:1px solid var(--line)}
.ctr b{font-size:32px;font-weight:500;color:var(--ink);line-height:1}
.ctr span{font-size:14px;color:var(--muted);line-height:1.3;max-width:15ch}
.status-card{background:#0E1B33;color:#D5DDEC;border-radius:14px;padding:16px 16px 10px;box-shadow:var(--shadow);font-size:14.5px}
.sc-title{display:flex;justify-content:space-between;gap:10px;font-size:13px;color:#8FE3A6;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.12)}
.sc-title .muted{color:#7D89A3}
.status-list{list-style:none;margin:0;padding:4px 0}
.status-list a{display:grid;grid-template-columns:16px 92px 1fr auto;gap:10px;align-items:baseline;padding:9px 4px;border-bottom:1px dashed rgba(255,255,255,.1);color:#D5DDEC;text-decoration:none;line-height:1.4}
.status-list li:last-child a{border-bottom:0}
.status-list a:hover{background:rgba(255,255,255,.04)}
.sl-mark{width:10px;height:10px;border-radius:50%;border:2px solid #7D89A3;align-self:center}
.sl-date{font-size:12.5px;color:#9FB4E8}
.sl-left{font-size:12px;color:#FFD866;white-space:nowrap}
.sl-done .sl-mark{background:#2DA44E;border-color:#2DA44E}.sl-done .sl-txt{color:#8C98B2}.sl-done .sl-left{color:#8FE3A6}
.sl-exp .sl-mark{border-style:dashed;border-color:#FFD866}.sl-exp .sl-date{color:#FFD866}
.sl-rule .sl-mark{border-color:#9FB4E8}
.sl-off .sl-mark{border-color:#fff}
@media (max-width:960px){.hero-grid{grid-template-columns:1fr}}
@media (max-width:480px){.status-list a{grid-template-columns:14px 1fr auto}.sl-date{grid-column:2}.sl-txt{grid-column:2/4}.sl-left{grid-row:1;grid-column:3}}

.block{padding-top:60px}
.diffviewer{display:grid;grid-template-columns:240px minmax(0,1fr);gap:20px;align-items:start}
.dv-tabs{display:flex;flex-direction:column;gap:4px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:8px}
.dv-tab{display:flex;align-items:center;gap:10px;text-align:left;background:transparent;border:0;border-radius:7px;padding:9px 10px;font:400 15px var(--f-text);color:var(--ink-2);cursor:pointer}
.dv-tab:hover{background:var(--soft)}
.dv-tab[aria-selected="true"]{background:var(--ink);color:#fff}
.dv-dot{width:9px;height:9px;border-radius:50%;background:var(--line-2);flex:none}
.dv-tab.is-chg .dv-dot{background:#E3A008}
.dv-panels .diff{margin-bottom:10px}
.dv-more{margin:0;font-size:15px}
@media (max-width:860px){.diffviewer{grid-template-columns:1fr}.dv-tabs{flex-direction:row;overflow-x:auto}.dv-tab{white-space:nowrap}}

.exam-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.exam{display:flex;flex-direction:column;gap:6px;padding:14px 16px;border-radius:var(--r);border:1px solid var(--line);background:var(--paper);text-decoration:none;color:var(--ink)}
.exam.is-chg{border-color:#E7C76A;box-shadow:inset 3px 0 0 #E3A008}
.exam:hover{border-color:var(--ink);color:var(--ink)}
.ex-name{font:700 19px/1.2 var(--f-head)}
.exam dl{margin:4px 0 0;display:grid;grid-template-columns:repeat(3,auto);gap:4px 12px;justify-content:start}
.exam dt{font-size:11.5px;color:var(--muted)}
.exam dd{margin:0;font-size:13px}
.exam dd b{color:var(--add);font-weight:500}
@media (max-width:1060px){.exam-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){.exam-grid{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.exam-grid{grid-template-columns:1fr}}

.sec-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.sec-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px 10px}
.sc-head{display:flex;flex-direction:column;text-decoration:none;color:var(--ink);margin-bottom:8px}
.sc-head .mono{color:var(--blue);font-size:12.5px}
.sc-head b{font:700 20px/1.2 var(--f-head)}
.sc-head small{font-size:11.5px;color:var(--muted)}
.sec-card ul{list-style:none;margin:0;padding:0}
.sec-card li a{display:block;padding:5px 0;border-top:1px solid var(--line);color:var(--ink-2);text-decoration:none;font-size:14.5px;line-height:1.35}
.sec-card li a:hover{color:var(--blue)}
.sec-card li.more a{color:var(--blue);font-weight:500}
@media (max-width:1100px){.sec-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:700px){.sec-grid{grid-template-columns:1fr 1fr}}
@media (max-width:460px){.sec-grid{grid-template-columns:1fr}}
.home-faq{padding-bottom:70px}
.home-faq .faq{margin-top:0}
.root-links{margin-top:22px}

/* tool pages */
.tool-head{padding-bottom:30px}
.tool-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;padding-top:34px;padding-bottom:26px;align-items:start}
@media (max-width:960px){.tool-grid{grid-template-columns:1fr}}
.panel{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow)}
@media (max-width:560px){.panel{padding:16px}}
.tool-form{display:flex;flex-direction:column;gap:22px}
.q{border:0;margin:0;padding:0;min-width:0}
.q legend,.lbl{display:flex;gap:8px;align-items:baseline;font-weight:600;font-size:16px;margin-bottom:10px;padding:0}
.q legend .mono,.lbl .mono{color:var(--add);font-size:12.5px}
.lbl output{color:var(--blue);margin-left:4px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:600px){.row2{grid-template-columns:1fr}}
.segs{display:flex;flex-wrap:wrap;gap:6px}
.seg{position:relative;cursor:pointer}
.seg input{position:absolute;opacity:0;width:1px;height:1px}
.seg span{display:inline-block;padding:8px 14px;border:1px solid var(--line-2);border-radius:8px;font-size:15px;line-height:1.25;background:var(--paper);color:var(--ink-2)}
.seg input:checked+span{background:var(--ink);border-color:var(--ink);color:#fff}
.seg input:focus-visible+span{outline:2px solid var(--blue);outline-offset:2px}
select,input[type=number]{font:400 16px var(--f-text);color:var(--ink);background:var(--paper);border:1px solid var(--line-2);border-radius:8px;padding:9px 10px}
input[type=number]{width:120px}
input[type=range]{width:100%;accent-color:var(--ink)}
.ps-list{display:grid;grid-template-columns:1fr 1fr;gap:6px 16px}
@media (max-width:640px){.ps-list{grid-template-columns:1fr}}
.ps-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:6px 8px;border-radius:8px;border:1px solid transparent}
.ps-row.on{background:var(--soft);border-color:var(--line)}
.ps-row select{padding:5px 8px;font-size:14px;opacity:.45}
.ps-row.on select{opacity:1}
.chk{display:flex;gap:8px;align-items:center;cursor:pointer;font-size:15px}
.chk input{width:17px;height:17px;accent-color:var(--ink)}
.result{margin-top:24px;padding-top:22px;border-top:1px dashed var(--line-2)}
.result:empty{display:none}
.pl-months{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
@media (max-width:700px){.pl-months{grid-template-columns:1fr}}
.pl-month{border:1px solid var(--line);border-radius:var(--r);padding:12px 14px;background:var(--bg)}
.pl-month header{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px}
.pl-month header .mono{font-size:12px;color:var(--muted)}
.pl-month header b{font:700 19px var(--f-head);text-transform:capitalize}
.pl-month header em{font-style:normal;font-size:12.5px;padding:2px 8px;border-radius:999px;background:var(--blue-soft);color:var(--blue)}
.pl-flag{font-size:12px;padding:2px 8px;border-radius:999px;background:var(--mov-bg);color:var(--mov)}
.pl-month p{margin:6px 0 8px;font-size:14.5px;color:var(--ink-2);line-height:1.5}
.pl-month ul{list-style:none;margin:0;padding:0}
.pl-month li{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.4fr) auto;gap:8px;padding:5px 0;border-top:1px solid var(--line);font-size:14px;line-height:1.4}
.pl-s{color:var(--ink);font-weight:500}
.pl-f{color:var(--ink-2)}
.pl-f b{color:var(--mov);font-weight:500}
.pl-h{color:var(--muted);font-size:12px;white-space:nowrap}
.warn,.note{padding:10px 14px;border-radius:8px;font-size:15px;line-height:1.5;margin:12px 0 0}
.warn{background:var(--del-bg);border:1px solid #F5B8B8}
.note{background:var(--blue-soft);border:1px solid #BCD0FF}
.tool-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.tool-side .note-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.note-card p{margin:0 0 10px;font-size:15px;color:var(--ink-2);line-height:1.6}
.note-card ul{margin:0;padding-left:1.1em;font-size:15px}
.note-card li{margin:4px 0}
.nm-big{display:flex;align-items:center;gap:16px;font-size:48px;line-height:1;margin-bottom:10px}
.nm-big .mono{padding:10px 18px;border-radius:10px;background:var(--soft);border:1px solid var(--line);font-weight:500}
.nm-arrow{color:var(--muted);font-size:30px}
.nm-big.mov .mono:last-child{background:var(--mov-bg);border-color:#E7C76A;color:var(--mov)}
.nm-big.add .mono:last-child{background:var(--add-bg);border-color:#9AE0AE;color:var(--add)}
.nm-big.del .mono:last-child{background:var(--del-bg);border-color:#F5B8B8;color:var(--del)}
.nm-big.same .mono:last-child{background:var(--paper)}
.map-h{margin:28px 0 8px}
.nm-table td:first-child,.nm-table td:nth-child(2){width:70px}
.r-add td{background:var(--add-bg)}.r-del td{background:var(--del-bg)}.r-mov td{background:var(--mov-bg)}
.bl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(86px,1fr));gap:8px}
.bl-cell{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 6px;border-radius:8px;border:1px solid var(--line);background:var(--bg)}
.bl-cell .mono{font-size:13px;color:var(--ink-2)}
.bl-cell select{width:100%;text-align:center;padding:5px}
.bl-cell small{font-size:11.5px;color:var(--muted)}
.bl-cell.is-new{background:var(--mov-bg);border-color:#E7C76A}
.bl-total{display:flex;align-items:baseline;gap:12px;margin-bottom:10px}
.bl-total b{font-size:48px;font-weight:500;line-height:1}
.bl-total span{color:var(--muted)}
.bar{height:10px;border-radius:5px;background:var(--soft);overflow:hidden;margin-bottom:14px}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--add),#2DA44E)}
.legend{display:flex;flex-wrap:wrap;gap:16px;font-size:12.5px;color:var(--muted);margin-bottom:14px}
.legend .lg{display:inline-block;width:11px;height:11px;border-radius:50%;margin-right:6px;vertical-align:-1px;border:2px solid}
.lg-off{border-color:var(--ink)}.lg-rule{border-color:var(--blue)}.lg-exp{border-color:#E3A008;border-style:dashed}.lg-done{background:var(--add);border-color:var(--add)}
.sr-list{list-style:none;margin:0;padding:0;position:relative}
.sr-list::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;border-left:2px solid var(--line)}
.sr-list li{display:grid;grid-template-columns:16px 1fr auto 24px;gap:14px;align-items:center;padding:12px 0;position:relative}
.sr-mark{width:16px;height:16px;border-radius:50%;background:var(--paper);border:3px solid var(--ink);z-index:1}
.sr-list b{display:block;font-weight:600;font-size:16px;line-height:1.35}
.sr-date{font-size:13px;color:var(--blue)}
.sr-list small{display:block;font-size:12.5px;color:var(--muted)}
.sr-left{font-size:13px;color:var(--ink);background:var(--soft);padding:4px 8px;border-radius:6px;white-space:nowrap}
.sr-go{text-decoration:none;font-weight:600}
.sr-done .sr-mark{background:var(--add);border-color:var(--add)}.sr-done b{color:var(--muted)}
.sr-rule .sr-mark{border-color:var(--blue)}
.sr-exp .sr-mark{border-color:#E3A008;border-style:dashed}.sr-exp .sr-date{color:var(--mov)}
@media (max-width:560px){.sr-list li{grid-template-columns:16px 1fr 22px}.sr-left{grid-column:2;justify-self:start}}

.sitemap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding-top:34px;padding-bottom:60px}
.sitemap-grid section{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.sitemap-grid h2{font-size:20px;margin-bottom:8px}
.sitemap-grid ul{margin:0;padding-left:1.1em;font-size:15px}
.sitemap-grid li{margin:4px 0}
@media (max-width:860px){.sitemap-grid{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.sitemap-grid{grid-template-columns:1fr}}
.term{background:#0E1B33;color:#8FE3A6;padding:18px 20px;border-radius:var(--r);white-space:pre-wrap;margin:0 0 20px;font-size:15px}

/* footer */
.site-footer{background:#0E1B33;color:#B9C4D8;padding:50px 0 30px;font-size:14.5px}
.f-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:26px}
.f-col h3{font:700 16px/1.3 var(--f-head);color:#fff;margin:0 0 10px}
.f-col h3 .mono{color:#8FE3A6;font-size:12.5px;margin-right:4px;font-weight:400}
.f-col .f-sub{margin-top:22px}
.f-col ul{list-style:none;margin:0;padding:0}
.f-col li{margin:5px 0;line-height:1.35}
.f-col a{color:#B9C4D8;text-decoration:none}
.f-col a:hover{color:#fff}
.f-bottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:13.5px;color:#8C98B2}
.f-bottom p{margin:0;max-width:86ch}
@media (max-width:1060px){.f-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:560px){.f-grid{grid-template-columns:1fr 1fr}}

@media print{
  .ticker,.site-header,.site-footer,.search-modal,.a-side,.after,.block-tools,.crumbs,.tool-side,.tool-actions{display:none!important}
  body{background:#fff}
  .panel{border:0;box-shadow:none;padding:0}
  .tool-grid{display:block}
}
.tool-grid>*,.a-grid>*,.hero-grid>*{min-width:0}
.exam:not(.is-chg) dd b{color:var(--ink)}
.sr-left:empty{display:none}