/* ---------- fonts (self-hosted, no third-party requests) ---------- */
@font-face{font-family:"Onest";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/onest-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:"Onest";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/onest-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+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Onest";font-style:normal;font-weight:500;font-display:swap;src:url(/assets/fonts/onest-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:"Onest";font-style:normal;font-weight:500;font-display:swap;src:url(/assets/fonts/onest-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+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Onest";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/onest-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:"Onest";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/onest-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+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Unbounded";font-style:normal;font-weight:500;font-display:swap;src:url(/assets/fonts/unbounded-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:"Unbounded";font-style:normal;font-weight:500;font-display:swap;src:url(/assets/fonts/unbounded-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+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Unbounded";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/unbounded-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:"Unbounded";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/unbounded-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+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* ---------- tokens ---------- */
:root{
  --bg:#F2F4F1; --surface:#FFFFFF; --surface-2:#E8EDE9; --ink:#1D2729; --muted:#5A6769;
  --line:#D6DED9; --accent:#2E6B5B; --accent-ink:#FFFFFF; --accent-soft:#DCEAE3;
  --mark:#B87A0B; --mark-soft:#F4E6C6; --danger:#B3261E;
  --display:"Unbounded","Onest",system-ui,sans-serif;
  --body:"Onest",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#101514; --surface:#171E1D; --surface-2:#1F2826; --ink:#E3EBE8; --muted:#97A5A1;
    --line:#2B3533; --accent:#67C2A4; --accent-ink:#0D1A16; --accent-soft:#1C3530;
    --mark:#E6B24B; --mark-soft:#3A2F17; --danger:#F2A39C;
    color-scheme:dark;
  }
}

/* ---------- base ---------- */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.55}
img{max-width:100%}
[hidden]{display:none!important}
a{color:var(--accent)}
p{margin:0}
h1,h2,h3{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:820px;margin:0 auto;padding-inline:16px}
.stack{display:flex;flex-direction:column;gap:32px}
.eyebrow{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.hint{color:var(--muted);font-size:14px;max-width:64ch}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}

/* ---------- header / footer ---------- */
.site-head{border-bottom:1px solid var(--line);background:var(--bg)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:14px;flex-wrap:wrap}
.brand{font-family:var(--display);font-weight:600;font-size:17px;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav a,.nav button{font:inherit;font-size:14px;color:var(--muted);text-decoration:none;padding:6px 10px;border-radius:999px;border:0;background:transparent;cursor:pointer}
.nav a:hover,.nav button:hover{color:var(--ink);background:var(--surface-2)}
.nav a[aria-current="page"]{color:var(--ink);background:var(--surface-2)}
.site-foot{border-top:1px solid var(--line);margin-top:56px}
.site-foot .wrap{display:flex;gap:16px;flex-wrap:wrap;justify-content:space-between;padding-block:20px;font-size:13px;color:var(--muted)}
.site-foot a{color:var(--muted)}
main{padding-block:32px 24px}

/* ---------- buttons & forms ---------- */
.btn{font:inherit;font-weight:600;font-size:15px;border-radius:999px;padding:10px 18px;border:1px solid transparent;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.2}
.btn.primary{background:var(--accent);color:var(--accent-ink)}
.btn.ghost{background:transparent;border-color:var(--accent);color:var(--accent)}
.btn.plain{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn.danger{background:transparent;border-color:var(--danger);color:var(--danger)}
.btn:disabled{opacity:.55;cursor:default}
.btn img,.btn svg{width:18px;height:18px}
.btns{display:flex;gap:10px;flex-wrap:wrap}
.field{display:grid;gap:6px}
.field label,.label{font-size:13.5px;font-weight:600}
input[type="text"],input[type="email"],input[type="password"],textarea{font:inherit;font-size:15px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 12px;width:100%}
textarea{resize:vertical;min-height:76px;font-size:14px}
input[inputmode="numeric"]{letter-spacing:.3em;font-variant-numeric:tabular-nums}
.msg{font-size:14px;padding:10px 12px;border-radius:10px;background:var(--surface-2)}
.msg.ok{background:var(--accent-soft)}
.msg.err{background:var(--mark-soft)}

/* ---------- landing ---------- */
.hero{display:grid;gap:18px;padding-block:24px 8px}
.hero h1{font-family:var(--display);font-weight:600;font-size:clamp(38px,8vw,64px);line-height:1.02;letter-spacing:-.02em}
.hero .lead{font-size:19px;max-width:40ch;text-wrap:balance}
.course-map{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:8px}
.course-map .wk{display:grid;gap:8px;padding:12px;border-radius:12px;background:var(--surface);border:1px solid var(--line)}
.course-map .dots{display:flex;gap:6px}
.course-map .dot{width:12px;height:12px;border-radius:50%;background:var(--surface-2);border:1.5px solid var(--line)}
.course-map .dot.on{background:var(--accent);border-color:var(--accent)}
.course-map b{font-size:14px}
.course-map small{font-size:12.5px;color:var(--muted);line-height:1.35}
@media (max-width:640px){.course-map{grid-template-columns:repeat(2,minmax(0,1fr))}}
.section{display:grid;gap:14px}
.section h2{font-family:var(--display);font-size:20px;font-weight:600}
.rules{margin:0;padding-left:20px;display:grid;gap:8px;max-width:64ch}
.facts{display:flex;gap:24px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.facts b{display:block;font-family:var(--display);font-size:22px;font-weight:500;color:var(--ink)}

/* ---------- auth pages ---------- */
.auth{max-width:440px;margin-inline:auto;display:grid;gap:22px}
.auth h1{font-family:var(--display);font-size:26px;font-weight:600}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px;display:grid;gap:14px}
.divider{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.tabs{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:3px;gap:2px;background:var(--surface);justify-self:start}
.tabs button{font:inherit;font-size:14px;border:0;background:transparent;color:var(--muted);padding:6px 12px;border-radius:999px;cursor:pointer}
.tabs button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.linkbtn{font:inherit;font-size:14px;background:none;border:0;color:var(--accent);text-decoration:underline;cursor:pointer;padding:0;justify-self:start}

/* ---------- lessons ---------- */
.lesson-head{display:grid;gap:10px;margin-bottom:24px}
.lesson-head h1{font-family:var(--display);font-weight:600;font-size:clamp(28px,5vw,38px);line-height:1.12;letter-spacing:-.01em;text-wrap:balance}
.lesson-head .lead{font-size:18px;color:var(--muted)}
.article{max-width:66ch;display:grid;gap:14px;font-size:17px;line-height:1.65}
.article h2{font-family:var(--body);font-weight:600;font-size:19px;margin-top:14px}
.article ul,.article ol{margin:0;padding-left:22px;display:grid;gap:6px}
.article ul ul,.article ol ul{margin-top:6px}
.article strong{font-weight:600}
.article table{border-collapse:collapse;font-size:14.5px;line-height:1.45;min-width:560px}
.article th,.article td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.article th{font-size:13px;color:var(--muted);font-weight:600}
.table-wrap{overflow-x:auto}
.gate{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px;display:grid;gap:10px;max-width:66ch}
.lesson-done{margin-top:32px;padding:18px;border-radius:16px;background:var(--accent-soft);display:grid;gap:12px;max-width:66ch}
.lesson-done p{font-weight:600}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:28px;max-width:66ch;flex-wrap:wrap}
.pager a{text-decoration:none;display:grid;gap:2px;font-size:15px;max-width:48%}
.pager a small{color:var(--muted);font-size:12.5px}
.pager .next{text-align:right;margin-left:auto}
.lesson-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 32px}
@media (max-width:680px){.lesson-list{grid-template-columns:1fr}}
.lweek{display:grid;gap:6px;align-content:start}
.lweek h3{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);font-weight:600;margin-bottom:4px}
.lweek ol{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.lrow{display:grid;grid-template-columns:24px minmax(0,1fr);gap:10px;align-items:start;padding:8px;border-radius:10px;text-decoration:none;color:var(--ink)}
.lrow:hover{background:var(--surface-2)}
.lrow.current{background:var(--accent-soft)}
.lrow.locked{color:var(--muted)}
.lrow b{font-weight:600;display:block}
.lrow small{color:var(--muted);font-size:13px;display:block}
.lstate{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;font-size:11px;font-variant-numeric:tabular-nums;color:var(--muted);margin-top:1px}
.lrow.done .lstate{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.lrow.current .lstate{border-color:var(--accent);color:var(--accent)}
.lstate svg{width:12px;height:12px}

/* ---------- cabinet ---------- */
.top{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;flex-wrap:wrap}
.top h1{font-family:var(--display);font-size:28px;font-weight:600;line-height:1.15}
.status{font-size:12.5px;color:var(--muted);display:flex;align-items:center;gap:7px}
.status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--muted);flex:none}
.status[data-s="saved"]::before{background:var(--accent)}
.status[data-s="saving"]::before{background:var(--mark)}
.next-card{background:var(--accent-soft);border-radius:16px;padding:20px;display:grid;gap:10px}
.next-card .label{font-size:12px;letter-spacing:.07em;text-transform:uppercase;color:var(--accent);font-weight:600}
.next-card .title{font-size:22px;font-weight:600;line-height:1.25;text-wrap:balance}
.meter{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.meter .bar{flex:1;height:4px;border-radius:4px;background:var(--surface);overflow:hidden;max-width:260px}
.meter .bar span{display:block;height:100%;background:var(--accent);border-radius:4px}
.block{display:grid;gap:14px}
.block-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.block-head h2{font-family:var(--display);font-size:18px;font-weight:600}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 16px}
.weeknav{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.iconbtn{width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;font:inherit;display:grid;place-items:center;padding:0}
.iconbtn:disabled{opacity:.35;cursor:default}
.grid{display:grid}
.row{display:grid;grid-template-columns:minmax(0,1fr) repeat(7,38px) 64px;column-gap:6px;row-gap:8px;align-items:center;padding-block:10px;border-top:1px solid var(--line)}
.row.head{border-top:0;padding-block:0 6px}
.dh{display:grid;justify-items:center;font-size:11.5px;color:var(--muted);line-height:1.25;font-variant-numeric:tabular-nums}
.dh b{font-weight:600}
.dh small{font-size:11.5px;padding:0 6px;border-radius:999px}
.dh.today{color:var(--accent)}
.dh.today small{background:var(--accent);color:var(--accent-ink)}
.cnt-h{font-size:11.5px;color:var(--muted);text-align:right}
.hname{display:grid;min-width:0}
.hname .nm{font-weight:600;overflow-wrap:anywhere;font-size:15px}
.hname .min{font-size:12.5px;color:var(--muted)}
.cell{justify-self:center;width:34px;height:34px;border-radius:50%;border:1.5px solid var(--line);background:var(--surface-2);color:var(--accent-ink);cursor:pointer;display:grid;place-items:center;padding:0;transition:background-color .15s,border-color .15s}
.cell svg{width:16px;height:16px;opacity:0}
.cell.is-today{border-color:var(--accent)}
.cell[aria-pressed="true"]{background:var(--accent);border-color:var(--accent)}
.cell[aria-pressed="true"] svg{opacity:1}
.cell:disabled{background:transparent;border-style:dashed;cursor:default;opacity:.45}
.cnt{display:flex;flex-direction:column;align-items:flex-end;line-height:1.15;font-variant-numeric:tabular-nums}
.cnt .n{font-family:var(--display);font-size:16px;font-weight:500}
.cnt .of{font-size:11.5px;color:var(--muted)}
.cnt.met .n,.cnt.met .of{color:var(--accent)}
.row.locked .hname{opacity:.55}
.lockmsg{grid-column:2 / -1;justify-self:start;font-size:12.5px;color:var(--muted);border:1px dashed var(--line);border-radius:999px;padding:5px 12px}
@media (max-width:600px){
  .row{grid-template-columns:repeat(7,minmax(0,1fr)) 52px}
  .row.head > .spacer{display:none}
  .hname{grid-column:1 / -1}
  .lockmsg{grid-column:1 / -1}
}
.sub{display:grid;gap:10px;margin-top:14px}
.sub h3{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);font-weight:600}
.weekly{display:flex;flex-wrap:wrap;gap:8px}
.wk-item{font:inherit;font-size:14px;display:inline-flex;align-items:center;gap:8px;padding:7px 14px 7px 8px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;text-align:left}
.wk-item .box{width:20px;height:20px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;color:var(--accent-ink);flex:none}
.wk-item .box svg{width:12px;height:12px;opacity:0}
.wk-item[aria-pressed="true"]{background:var(--accent-soft);border-color:var(--accent)}
.wk-item[aria-pressed="true"] .box{background:var(--accent);border-color:var(--accent)}
.wk-item[aria-pressed="true"] .box svg{opacity:1}
.wk-item:disabled{cursor:default;opacity:.55}
.wk-item small{color:var(--muted);font-size:12px}
.review{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (max-width:600px){.review{grid-template-columns:1fr}}
.wheel{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:24px;align-items:start}
@media (max-width:640px){.wheel{grid-template-columns:1fr}}
.wheel-side{display:grid;gap:12px}
.seg{display:inline-flex;flex-wrap:wrap;border:1px solid var(--line);border-radius:999px;padding:3px;gap:2px;background:var(--surface);justify-self:start}
.seg button{font:inherit;font-size:13px;border:0;background:transparent;color:var(--muted);padding:6px 12px;border-radius:999px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.sliders{display:grid;gap:8px}
.sl .lab{display:flex;justify-content:space-between;font-size:14px}
.sl output{font-variant-numeric:tabular-nums;font-weight:600}
input[type="range"]{width:100%;accent-color:var(--accent);margin:2px 0}
.radar{margin:0}
.radar svg{width:100%;height:auto;display:block;max-width:440px;margin-inline:auto}
.ring{fill:none;stroke:var(--line);stroke-width:1}
.axis{stroke:var(--line);stroke-width:1}
.rlab{fill:var(--muted);font-size:11.5px;font-family:var(--body)}
.tick{fill:var(--muted);font-size:9.5px;font-family:var(--body)}
.empty-note{fill:var(--muted);font-size:12px;font-family:var(--body)}
.p-start{fill:var(--muted);fill-opacity:.08;stroke:var(--muted);stroke-width:1.5;stroke-dasharray:4 3}
.p-mid{fill:var(--mark);fill-opacity:.14;stroke:var(--mark);stroke-width:1.75}
.p-end{fill:var(--accent);fill-opacity:.16;stroke:var(--accent);stroke-width:2}
.dot{stroke:var(--surface);stroke-width:1.5}
.dot-start{fill:var(--muted)} .dot-mid{fill:var(--mark)} .dot-end{fill:var(--accent)}
.legend{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;font-size:12.5px;color:var(--muted);margin-top:8px}
.legend i{display:inline-block;width:16px;height:3px;border-radius:2px;margin-right:6px;vertical-align:middle}
.lg-start{background:var(--muted)} .lg-mid{background:var(--mark)} .lg-end{background:var(--accent)}
.set-grid{display:grid;gap:14px;max-width:560px}
.chk{display:flex;gap:10px;align-items:center;cursor:pointer;font-size:15px}
.chk input{accent-color:var(--accent);width:18px;height:18px;margin:0}
.danger-zone{border-top:1px solid var(--line);padding-top:14px;display:grid;gap:10px}