:root{
  --bg:#f6f7f9;
  --surface:#ffffff;
  --surface-2:#f0f2f5;
  --text:#14171c;
  --muted:#6a7280;
  --line:#e3e6ea;
  --accent:#2f6df6;
  --accent-soft:#e8f0ff;
  --done:#1f9d5a;
  --done-soft:#e6f6ed;
  --warn:#b26a00;
  --radius:14px;
  --wrap:820px;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0f1115;
    --surface:#171a21;
    --surface-2:#1e222b;
    --text:#e8eaee;
    --muted:#939aa6;
    --line:#282d38;
    --accent:#5b8cff;
    --accent-soft:#1b2438;
    --done:#3fbe7c;
    --done-soft:#16281f;
    --warn:#d99a3a;
  }
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  padding-bottom:48px;
}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}

/* header */
.top{
  position:sticky;top:0;z-index:20;
  background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.top-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;padding-bottom:12px}
.brand{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-title{font-weight:650;font-size:16px;letter-spacing:-.01em}
.brand-sub{font-size:13px;color:var(--muted)}

button{font:inherit;cursor:pointer;border-radius:10px;border:1px solid transparent}
.ghost{background:transparent;border-color:var(--line);color:var(--muted);padding:7px 12px;font-size:13px}
.ghost:hover{color:var(--text);border-color:var(--muted)}
.primary{background:var(--accent);color:#fff;padding:9px 16px;font-weight:550;font-size:14px;white-space:nowrap}
.primary:hover{filter:brightness(1.08)}

/* panels */
.panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:16px;
  margin-top:16px;
}

/* next step */
.next{border-color:var(--accent);background:var(--accent-soft)}
.next-label{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--accent);font-weight:650;margin-bottom:8px}
.next-body{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.next-text{font-size:17px;font-weight:550;letter-spacing:-.01em;flex:1 1 240px}

/* progress */
.progress-head{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;color:var(--muted);margin-bottom:9px}
.progress-num{font-variant-numeric:tabular-nums;font-weight:650;color:var(--text)}
.bar{height:7px;background:var(--surface-2);border-radius:99px;overflow:hidden}
.bar-fill{height:100%;width:0;background:var(--done);border-radius:99px;transition:width .35s ease}
.dots{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}
.dot{
  flex:1 1 0;min-width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:600;font-variant-numeric:tabular-nums;
  background:var(--surface-2);color:var(--muted);
  border:1px solid transparent;
}
.dot.done{background:var(--done-soft);color:var(--done);border-color:var(--done)}
.dot.active{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}

/* howto */
.howto summary{cursor:pointer;font-weight:600;font-size:15px;list-style:none}
.howto summary::-webkit-details-marker{display:none}
.howto summary::before{content:"▸ ";color:var(--muted)}
.howto[open] summary::before{content:"▾ "}
.howto-body{padding-top:10px;font-size:14.5px}
.howto-lead{color:var(--muted);margin:14px 0 6px;font-size:13px;text-transform:uppercase;letter-spacing:.05em}
.cycle,.rules{margin:0;padding-left:20px}
.cycle li,.rules li{margin:4px 0}

/* block */
.block{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  margin-top:14px;
  overflow:hidden;
}
.block.is-done{border-color:var(--done)}
.block-head{
  display:flex;align-items:flex-start;gap:12px;
  padding:16px;cursor:pointer;user-select:none;
}
.block-head:hover{background:var(--surface-2)}
.badge{
  flex:none;width:32px;height:32px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface-2);color:var(--muted);
  font-weight:650;font-size:14px;font-variant-numeric:tabular-nums;
}
.is-done .badge{background:var(--done-soft);color:var(--done)}
.block-titles{flex:1;min-width:0}
.block-week{font-size:12px;color:var(--muted);letter-spacing:.03em}
.block-name{font-size:17px;font-weight:600;letter-spacing:-.015em;margin-top:1px}
.block-goal{font-size:14px;color:var(--muted);margin-top:5px}
.block-meta{flex:none;display:flex;flex-direction:column;align-items:flex-end;gap:5px;padding-top:2px}
.mini{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.chev{color:var(--muted);font-size:13px;transition:transform .2s}
.block.open .chev{transform:rotate(90deg)}

.block-body{display:none;padding:0 16px 16px;border-top:1px solid var(--line)}
.block.open .block-body{display:block}

.note{
  background:var(--surface-2);border-left:3px solid var(--warn);
  padding:10px 12px;border-radius:0 8px 8px 0;font-size:14px;margin:14px 0;color:var(--text);
}

/* section */
.sec{margin-top:20px}
.sec-title{font-size:15px;font-weight:650;letter-spacing:-.01em;margin-bottom:10px}
.group{margin:10px 0}
.group-label{font-size:11.5px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);font-weight:600;margin-bottom:6px}
.links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.links li{display:flex;align-items:baseline;gap:8px}
.links a{color:var(--accent);text-decoration:none;font-size:14.5px}
.links a:hover{text-decoration:underline}
.links .file{color:var(--text);font-size:14.5px}
.tag{
  flex:none;font-size:10.5px;padding:1px 6px;border-radius:5px;
  background:var(--surface-2);color:var(--muted);letter-spacing:.03em;text-transform:uppercase;font-weight:600;
}
.tag.req{background:var(--accent-soft);color:var(--accent)}
.pending{color:var(--muted);font-size:14.5px;font-style:italic}

/* homework */
.hw{
  background:var(--surface-2);border-radius:12px;padding:14px;margin-top:12px;
}
.hw-head{display:flex;align-items:baseline;gap:9px;flex-wrap:wrap;margin-bottom:8px}
.hw-code{
  font-size:11.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  background:var(--accent);color:#fff;padding:2px 8px;border-radius:6px;
}
.hw-title{font-weight:600;font-size:15px}
.hw-task{font-size:14.5px;white-space:pre-line;color:var(--text)}
.dod-label{font-size:11.5px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);font-weight:600;margin:14px 0 7px}
.dod{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:1px}
.dod label{display:flex;gap:9px;align-items:flex-start;padding:5px 6px;border-radius:7px;cursor:pointer;font-size:14.5px}
.dod label:hover{background:var(--surface)}
.dod input{margin:3px 0 0;flex:none;width:16px;height:16px;accent-color:var(--done);cursor:pointer}
.dod input:checked + span{color:var(--muted);text-decoration:line-through}
.dod-count{font-size:12px;color:var(--muted);margin-top:8px;font-variant-numeric:tabular-nums}
.dod-count.full{color:var(--done);font-weight:600}

/* звонки */
.calls-head{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);font-weight:650;margin-bottom:10px}
.call-mine{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.call-when{font-size:15.5px;font-weight:600;letter-spacing:-.01em}
.call-list{display:flex;flex-direction:column;gap:2px}
.call-row{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 10px;border-radius:9px}
.call-row:hover{background:var(--surface-2)}
.call-row button{padding:6px 14px;font-size:13.5px}

/* сдача домашки */
.submit{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.submit-head{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:8px}
.status{
  font-size:11.5px;font-weight:650;letter-spacing:.03em;text-transform:uppercase;
  padding:3px 9px;border-radius:6px;
}
.st-wait{background:var(--accent-soft);color:var(--accent)}
.st-ok{background:var(--done-soft);color:var(--done)}
.st-fix{background:color-mix(in srgb,var(--warn) 15%,transparent);color:var(--warn)}
.review{background:var(--surface);border-radius:9px;padding:11px 12px;margin-bottom:10px}
.review-label{font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:650;margin-bottom:5px}
.review-text{font-size:14.5px;white-space:pre-line}
.submit-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.submit-row input[type=file]{font-size:13.5px;color:var(--muted);max-width:100%}
.submit button:disabled{opacity:.55;cursor:default}

/* prep / after */
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}
@media (max-width:640px){.two{grid-template-columns:1fr}}
.card{background:var(--surface-2);border-radius:12px;padding:14px}
.card h4{margin:0 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:650}
.card ol,.card ul{margin:0;padding-left:19px;font-size:14.5px}
.card li{margin:4px 0}

/* steps */
.steps{margin-top:20px;border-top:1px solid var(--line);padding-top:14px}
.steps h4{margin:0 0 9px;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:650}
.step{display:flex;gap:9px;align-items:center;padding:7px 8px;border-radius:8px;cursor:pointer;font-size:15px}
.step:hover{background:var(--surface-2)}
.step input{width:18px;height:18px;accent-color:var(--done);cursor:pointer;flex:none}
.step input:checked + span{color:var(--muted)}

.foot{margin-top:28px;text-align:center;font-size:12.5px;color:var(--muted);padding-bottom:8px}