:root{
  --bg:#fbfcfe; --panel:#ffffff; --ink:#0f1115; --muted:#5b6472; --faint:#8a93a3;
  --line:#e7ebf1; --line2:#eef1f6; --soft:#f4f6fa; --soft2:#eef2f8;
  --acc:#3964fe; --acc-d:#2a4fe0; --acc-bg:#eef2ff; --acc-soft:#e8edff;
  --ok:#16a34a; --okbg:#eafaf0; --warn:#d98a00; --warnbg:#fff6e6; --tip:#6b46e5; --tipbg:#f1edff;
  --r:14px; --rs:10px; --shadow:0 1px 2px rgba(16,24,40,.04),0 6px 22px rgba(16,24,40,.06);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Helvetica,Arial,sans-serif;
  --h:60px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:15.5px;line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}

/* top bar */
.top{position:sticky;top:0;z-index:50;height:var(--h);display:flex;align-items:center;gap:14px;
  padding:0 18px;background:rgba(251,252,254,.86);backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line)}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:9px;color:var(--ink);
  width:38px;height:38px;align-items:center;justify-content:center;cursor:pointer;padding:0}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-txt{font-size:11.5px;line-height:1.18;font-weight:700;letter-spacing:.01em;color:var(--ink);text-transform:uppercase}
.logo{width:22px;height:22px;border-radius:7px;background:
  conic-gradient(from 210deg,var(--acc),#7b61ff 55%,var(--acc));
  box-shadow:0 2px 8px rgba(57,100,254,.45);position:relative}
.logo::after{content:"";position:absolute;inset:6px;border-radius:3px;background:#fff;opacity:.92}
.tabs{display:flex;gap:4px;margin-left:8px}
.tab{font:inherit;font-size:13.5px;font-weight:600;color:var(--muted);background:none;border:0;
  padding:8px 13px;border-radius:9px;cursor:pointer;white-space:nowrap;transition:.15s}
.tab:hover{color:var(--ink);background:var(--soft)}
.tab.active{color:var(--acc-d);background:var(--acc-bg)}
.search{margin-left:auto;display:flex;align-items:center;gap:8px;background:var(--panel);
  border:1px solid var(--line);border-radius:10px;padding:0 11px;height:38px;color:var(--faint);
  min-width:200px;max-width:280px;width:24vw;transition:.15s}
.search:focus-within{border-color:var(--acc);box-shadow:0 0 0 3px var(--acc-soft)}
.search input{border:0;outline:0;background:none;font:inherit;font-size:14px;color:var(--ink);width:100%}

/* layout */
.layout{display:flex;align-items:flex-start}
.sidebar{position:sticky;top:var(--h);align-self:flex-start;width:296px;flex:0 0 296px;
  height:calc(100vh - var(--h));overflow-y:auto;border-right:1px solid var(--line);
  background:linear-gradient(180deg,#fbfcfe,#f7f9fc)}
.side-inner{padding:18px 14px 60px}
.nav-group{display:none;animation:fade .25s ease}
.nav-group.show{display:block}
.nav-item{display:flex;align-items:center;gap:11px;padding:8px 11px;border-radius:10px;
  color:var(--muted);font-size:14px;font-weight:500;line-height:1.3;margin:2px 0;
  border:1px solid transparent;transition:.13s;cursor:pointer}
.nav-item:hover{background:var(--panel);color:var(--ink);border-color:var(--line)}
.nav-item.active{background:var(--panel);color:var(--ink);border-color:var(--acc);box-shadow:var(--shadow)}
.nav-item.active .badge{background:var(--acc);color:#fff}
.badge{flex:0 0 24px;width:24px;height:24px;border-radius:7px;display:flex;align-items:center;
  justify-content:center;font-size:12.5px;font-weight:700;background:var(--soft2);color:var(--muted);
  font-variant-numeric:tabular-nums}
.badge.alt{font-size:13px}
.nav-name{flex:1}
.hidesearch{display:none!important}

/* main */
.content{flex:1;min-width:0;padding:34px clamp(18px,4vw,56px) 80px;max-width:920px;margin:0 auto}
.page[hidden]{display:none}
.page{animation:fade .25s ease}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.art-head{margin:0 0 22px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.art-emoji{font-size:30px;display:block;margin-bottom:6px;line-height:1}
.art-head h1{margin:0;font-size:clamp(24px,3.6vw,33px);line-height:1.18;letter-spacing:-.025em;font-weight:780}

.content h3.sub{font-size:19px;font-weight:720;letter-spacing:-.02em;margin:34px 0 12px;line-height:1.25}
.content h3.stage{font-size:14px;text-transform:uppercase;letter-spacing:.06em;color:var(--acc-d);
  font-weight:700;margin:36px 0 4px;padding:6px 0;border-bottom:1px dashed var(--line)}
.content h3.resume-h{font-size:17px;color:var(--ok);font-weight:720;margin:30px 0 10px}
.content h4.sub{font-size:16.5px;font-weight:700;margin:24px 0 10px}
.content p{margin:0 0 13px}
.content ul,.content ol{margin:0 0 14px;padding-left:22px}
.content li{margin:5px 0}
.content ul li::marker{color:var(--acc)}
.content strong{font-weight:680}
.content em{color:var(--muted);font-style:italic}
.ph{background:var(--acc-bg);color:var(--acc-d);border-radius:5px;padding:.5px 6px;font-size:.93em;
  font-weight:600;white-space:nowrap}
.fill{display:inline-block;min-width:120px;border-bottom:1.5px dotted var(--faint);height:1.05em;
  vertical-align:bottom;margin:0 2px}

/* prompt card */
.prompt{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  margin:16px 0 22px;box-shadow:var(--shadow);overflow:hidden}
.p-head{display:flex;align-items:center;gap:10px;padding:11px 14px;background:
  linear-gradient(180deg,#f7f9ff,#f3f6ff);border-bottom:1px solid var(--line2)}
.p-tag{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--acc-d);
  background:var(--acc-bg);padding:4px 9px;border-radius:6px}
.copy{margin-left:auto;display:flex;align-items:center;gap:7px;font:inherit;font-size:13px;font-weight:600;
  color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:8px;
  padding:6px 11px;cursor:pointer;transition:.13s}
.copy:hover{color:var(--acc-d);border-color:var(--acc);background:var(--acc-bg)}
.copy.done{color:#fff;background:var(--ok);border-color:var(--ok)}
.copy.done svg{display:none}
.p-title{padding:13px 16px 0;font-weight:700;font-size:15px}
.p-body{padding:12px 16px 16px;font-size:14.5px}
.p-body p{margin:0 0 10px}
.p-body p:first-child{margin-top:0}
.p-body ul,.p-body ol{margin:8px 0 10px}

/* tables */
.tw{overflow-x:auto;margin:14px 0 18px;border:1px solid var(--line);border-radius:var(--rs);
  -webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:13.5px;min-width:420px}
thead th{background:var(--soft);text-align:left;font-weight:700;color:var(--ink);
  padding:9px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
tbody td{padding:9px 12px;border-bottom:1px solid var(--line2);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:#fbfcff}

/* callouts */
.callout{border-radius:var(--rs);padding:12px 14px 12px 16px;margin:14px 0;font-size:14px;
  border:1px solid var(--line);position:relative;padding-left:18px}
.callout::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;border-radius:4px 0 0 4px}
.callout.go{background:var(--okbg);border-color:#cdeede}.callout.go::before{background:var(--ok)}
.callout.back{background:var(--warnbg);border-color:#f3e3bf}.callout.back::before{background:var(--warn)}
.callout.tip{background:var(--tipbg);border-color:#e2d9fb}.callout.tip::before{background:var(--tip)}

/* resume card (editable, saved locally) */
.resume{background:linear-gradient(180deg,#f6fbf8,#eefaf2);border:1px solid #d4eede;
  border-radius:var(--r);padding:18px 18px 14px;margin:10px 0 22px}
.resume .rnote{color:#3f6b51;font-size:13.5px;margin:0 0 14px}
.resume .rsub{font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  color:#1d6b3f;margin:18px 0 8px}
.resume .rsub:first-child{margin-top:0}
.rfield{margin:0 0 12px}
.rlabel{display:block;font-size:13.5px;font-weight:600;color:#15532f;margin:0 0 5px}
.rinput{display:block;width:100%;font:inherit;font-size:14.5px;color:var(--ink);
  background:#fff;border:1px solid #cfe7d8;border-radius:9px;padding:8px 11px;resize:vertical;
  min-height:38px;line-height:1.5;overflow:hidden;transition:.13s}
.rinput::placeholder{color:#9fb8a8}
.rinput:focus{outline:0;border-color:var(--ok);box-shadow:0 0 0 3px #d6f0e0}
.resume .tw{border-color:#cfe7d8;background:#fff;margin:6px 0 14px}
.resume thead th{background:#eafaf0;color:#15532f;border-bottom-color:#cfe7d8}
.resume tbody td{border-bottom-color:#e3f2e9;vertical-align:middle}
.resume td.rtd{padding:4px 6px}
.resume td.rtd .rinput{border-color:#dcebe2;min-height:34px}
.resume tbody tr:nth-child(even){background:#f8fdfa}

/* checklist */
.checklist .rnote{color:var(--muted);font-size:14px;margin:0 0 16px}
.ckprogress{display:flex;align-items:center;gap:12px;margin:0 0 18px}
.ckbar-wrap{flex:1;height:8px;background:var(--soft2);border-radius:99px;overflow:hidden}
.ckbar{height:100%;width:0;background:linear-gradient(90deg,var(--acc),#7b61ff);
  border-radius:99px;transition:width .3s ease}
.ckcount{font-size:13px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.cklist{display:flex;flex-direction:column;gap:2px}
.ck{display:flex;align-items:flex-start;gap:12px;padding:11px 13px;border-radius:11px;
  border:1px solid var(--line);background:var(--panel);cursor:pointer;transition:.13s;user-select:none}
.ck:hover{border-color:var(--acc);background:var(--acc-bg)}
.ck input{position:absolute;opacity:0;width:0;height:0}
.ckmark{flex:0 0 22px;width:22px;height:22px;border-radius:7px;border:2px solid #cdd5e1;
  background:#fff;display:flex;align-items:center;justify-content:center;transition:.13s;margin-top:1px}
.ckmark::after{content:"";width:11px;height:6px;border-left:2.5px solid #fff;border-bottom:2.5px solid #fff;
  transform:rotate(-45deg) scale(0);transform-origin:center;margin-top:-2px;transition:transform .15s}
.ck input:checked~.ckmark{background:var(--acc);border-color:var(--acc)}
.ck input:checked~.ckmark::after{transform:rotate(-45deg) scale(1)}
.cktext{flex:1;font-size:14.5px;line-height:1.45;color:var(--ink);padding-top:1px}
.ck input:checked~.cktext{color:var(--muted);text-decoration:line-through;text-decoration-color:#c3ccd8}

/* sidebar progress */
.nav-progress{padding:12px 11px 14px;margin:0 0 10px;border:1px solid var(--line);border-radius:12px;
  background:var(--panel);box-shadow:var(--shadow)}
.np-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:9px}
.np-label{font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--faint)}
.np-count{font-size:12.5px;font-weight:800;color:var(--acc-d);font-variant-numeric:tabular-nums}
.np-bar{height:7px;background:var(--soft2);border-radius:99px;overflow:hidden}
.np-fill{height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--acc),#7b61ff);transition:width .35s ease}

/* nav done check */
.nav-item{position:relative}
.nav-done{margin-left:auto;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  width:18px;height:18px;border-radius:50%;background:var(--ok);color:#fff;opacity:0;transform:scale(.5);
  transition:.16s}
.nav-item.done .nav-done{opacity:1;transform:scale(1)}
.nav-item.done .badge{background:#dff3e6;color:var(--ok)}
.nav-item.done.active .badge{background:var(--acc);color:#fff}

/* block footer: перейти дальше */
.block-footer{margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.gonext{display:flex;align-items:center;gap:13px;width:100%;text-align:left;font:inherit;cursor:pointer;
  padding:15px 18px;border-radius:14px;border:1px solid var(--acc);background:var(--acc-bg);
  color:var(--acc-d);transition:.15s;box-shadow:0 1px 2px rgba(57,100,254,.08)}
.gonext:hover{background:#e3eaff;box-shadow:0 8px 22px rgba(57,100,254,.16);transform:translateY(-1px)}
.gn-ico{flex:0 0 auto;display:flex;align-items:center;justify-content:center}
.gn-ok{display:none}
.gn-txt{display:flex;flex-direction:column;gap:2px;min-width:0}
.gn-main{font-size:15px;font-weight:700;line-height:1.2}
.gn-sub{font-size:12.5px;color:var(--acc-d);opacity:.72;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.gn-arr{flex:0 0 auto;margin-left:auto;transition:transform .15s}
.gonext:hover .gn-arr{transform:translateX(4px)}
.gonext.is-done{border-color:#bfe6cd;background:var(--okbg);color:#1d7a43}
.gonext.is-done .gn-todo{display:none}
.gonext.is-done .gn-ok{display:flex}
.gonext.is-done .gn-main::after{content:" — пройдено";font-weight:600;opacity:.7}
.gonext.is-done .gn-sub{color:#1d7a43}
.gonext.gn-plain{background:var(--panel);border-color:var(--line);color:var(--ink);box-shadow:var(--shadow)}
.gonext.gn-plain:hover{border-color:var(--acc);background:var(--soft);color:var(--acc-d);box-shadow:0 8px 22px rgba(16,24,40,.08)}
.gonext.gn-plain .gn-ico{color:var(--acc-d)}
.gonext.gn-plain .gn-sub{color:var(--muted);opacity:1}

/* intro / hero */
.intro-page{max-width:880px}
.hero{padding:8px 0 30px;border-bottom:1px solid var(--line);margin-bottom:32px}
.hero-kicker{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;
  color:var(--acc-d);background:var(--acc-bg);padding:5px 11px;border-radius:7px;margin-bottom:18px}
.hero-title{margin:0 0 8px;font-size:clamp(30px,5.2vw,46px);line-height:1.08;letter-spacing:-.03em;font-weight:800}
.hero-alt{margin:0 0 18px;font-size:clamp(15px,2vw,18px);color:var(--faint);font-style:italic;font-weight:500}
.hero-sub{margin:0 0 12px;font-size:clamp(15px,2vw,17px);line-height:1.6;color:var(--muted);max-width:660px}
.hero-sub:last-child{margin-bottom:0}
.choose-h{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--faint);margin:0 0 16px}
.branch-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:42px}
.bcard{display:flex;flex-direction:column;position:relative;padding:22px 22px 20px;border:1px solid var(--line);
  border-radius:18px;background:var(--panel);box-shadow:var(--shadow);overflow:hidden;
  transition:transform .16s ease,border-color .16s,box-shadow .16s;cursor:pointer}
.bcard::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--acc),#7b61ff);
  opacity:0;transition:.16s}
.bcard:hover{transform:translateY(-3px);border-color:var(--acc);box-shadow:0 10px 30px rgba(57,100,254,.16)}
.bcard:hover::before{opacity:1}
.bcard-num{width:40px;height:40px;border-radius:12px;background:var(--acc-bg);color:var(--acc-d);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;margin-bottom:16px}
.bcard:hover .bcard-num{background:var(--acc);color:#fff}
.bcard-tag{font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--faint);margin-bottom:6px}
.bcard-name{font-size:21px;font-weight:760;letter-spacing:-.02em;margin-bottom:9px;color:var(--ink)}
.bcard-desc{font-size:14.5px;line-height:1.5;color:var(--muted);margin-bottom:18px;flex:1}
.bcard-go{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--acc-d);margin-top:auto}
.bcard:hover .bcard-go svg{transform:translateX(3px)}
.bcard-go svg{transition:transform .16s}
.howto-list{margin:0;padding-left:0;list-style:none;counter-reset:h}
.howto-list li{position:relative;padding:0 0 14px 42px;counter-increment:h;font-size:15px;color:var(--ink)}
.howto-list li::before{content:counter(h);position:absolute;left:0;top:-2px;width:28px;height:28px;border-radius:9px;
  background:var(--soft2);color:var(--muted);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center}
.howto-list strong{font-weight:680}
@media(max-width:680px){.branch-cards{grid-template-columns:1fr}}

.foot{margin-top:50px;padding-top:22px;border-top:1px solid var(--line);color:var(--faint);font-size:13px}

/* to top */
.totop{position:fixed;right:20px;bottom:20px;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--panel);color:var(--muted);display:none;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--shadow);z-index:40}
.totop.show{display:flex}
.totop:hover{color:var(--acc-d);border-color:var(--acc)}

.scrim{display:none}

/* mobile */
@media(max-width:980px){
  :root{--h:56px}
  .tabs{display:none}
  .search{min-width:0;width:auto;flex:1;max-width:none}
  .burger{display:flex}
  .sidebar{position:fixed;top:0;left:0;height:100dvh;z-index:60;width:298px;flex-basis:298px;
    transform:translateX(-100%);transition:transform .26s cubic-bezier(.4,0,.2,1);
    border-right:1px solid var(--line);box-shadow:0 0 40px rgba(16,24,40,.18)}
  .sidebar.open{transform:none}
  .side-inner{padding-top:14px}
  .scrim{display:block;position:fixed;inset:0;background:rgba(8,12,20,.42);z-index:55;opacity:0;
    pointer-events:none;transition:opacity .26s}
  .scrim.show{opacity:1;pointer-events:auto}
  .content{padding:24px 18px 70px}
  .layout{display:block}
  /* mobile tabs inside drawer */
  .m-tabs{display:flex;gap:6px;padding:0 12px 14px;margin-bottom:6px;border-bottom:1px solid var(--line);flex-wrap:wrap}
  .m-tabs .tab{display:inline-flex;font-size:13px;padding:7px 11px;border:1px solid var(--line)}
  .m-tabs .tab.active{border-color:var(--acc);background:var(--acc-bg)}
}
@media(min-width:981px){.m-tabs{display:none}}
@media(max-width:560px){
  body{font-size:15px}
  .brand-txt{font-size:10px}
  .search{max-width:none}
  .art-head h1{font-size:23px}
}
@media(max-width:400px){.brand-txt{display:none}}