:root{
  --bg:#f6f7fb;
  --surface:#ffffff;
  --surface-2:#eef1f8;
  --text:#141827;
  --muted:#6b7280;
  --border:#e3e7f0;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 12px 32px -8px rgba(16,24,40,.08);
  --shadow-lg:0 24px 64px -16px rgba(16,24,40,.18);
  --c-main:#6366f1;
  --c-base:#06b6d4;
  --c-spec:#8b5cf6;
  --c-gen:#f59e0b;
  --c-is:#ec4899;
  --c-elec:#10b981;
  --c-rel:#64748b;
}
[data-theme="dark"]{
  --bg:#0c0e15;
  --surface:#141824;
  --surface-2:#1c2130;
  --text:#e9ecf5;
  --muted:#98a0b6;
  --border:#242a3a;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 32px -8px rgba(0,0,0,.5);
  --shadow-lg:0 24px 64px -16px rgba(0,0,0,.7);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{
  font-family:'Vazirmatn',system-ui,sans-serif;
  background:var(--bg);color:var(--text);
  line-height:1.8;-webkit-font-smoothing:antialiased;
  transition:background .3s,color .3s;
}

nav{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  background:color-mix(in srgb,var(--bg) 82%,transparent);
  border-bottom:1px solid var(--border);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:15px;white-space:nowrap}
.brand-icon{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-main),var(--c-spec));
  display:grid;place-items:center;color:#fff;font-size:16px;font-weight:700;
}
.nav-links{display:flex;gap:4px;margin-inline-start:auto;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{
  color:var(--muted);text-decoration:none;font-size:13.5px;font-weight:500;
  padding:7px 13px;border-radius:9px;white-space:nowrap;transition:.2s;
}
.nav-links a:hover{color:var(--text);background:var(--surface-2)}
.theme-btn{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--border);
  background:var(--surface);cursor:pointer;font-size:15px;flex-shrink:0;
  display:grid;place-items:center;transition:.2s;
}
.theme-btn:hover{background:var(--surface-2);transform:scale(1.05)}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
section{padding:64px 0}
.sec-head{margin-bottom:36px}
.sec-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.4px;
  color:var(--c-main);background:color-mix(in srgb,var(--c-main) 12%,transparent);
  padding:4px 12px;border-radius:100px;margin-bottom:12px;
}
h2{font-size:clamp(22px,3.2vw,30px);font-weight:800;letter-spacing:-.4px;line-height:1.4}
.sec-head p{color:var(--muted);font-size:14.5px;margin-top:8px;max-width:640px}

.hero{
  padding:72px 0 56px;
  background:
    radial-gradient(900px 400px at 85% -10%,color-mix(in srgb,var(--c-spec) 16%,transparent),transparent),
    radial-gradient(700px 350px at 10% 0%,color-mix(in srgb,var(--c-main) 14%,transparent),transparent);
}
.hero-grid{display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center}
.hero h1{
  font-size:clamp(28px,4.6vw,46px);font-weight:800;line-height:1.35;
  letter-spacing:-1px;margin-bottom:16px;
}
.grad{
  background:linear-gradient(120deg,var(--c-main),var(--c-spec) 55%,var(--c-is));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{color:var(--muted);font-size:16px;max-width:560px;margin-bottom:26px}
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{
  font-size:13px;font-weight:600;padding:7px 15px;border-radius:100px;
  background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);
}
.chip b{color:var(--c-main)}

.donut-box{position:relative;width:230px;height:230px;flex-shrink:0}
.donut{
  width:100%;height:100%;border-radius:50%;
  background:conic-gradient(
    var(--c-main) 0 38.31%,
    var(--c-gen) 38.31% 53.89%,
    var(--c-base) 53.89% 66.88%,
    var(--c-spec) 66.88% 79.22%,
    var(--c-is) 79.22% 87.01%,
    var(--c-rel) 87.01% 94.81%,
    var(--c-elec) 94.81% 100%
  );
  mask:radial-gradient(circle,transparent 57%,#000 58%);
  -webkit-mask:radial-gradient(circle,transparent 57%,#000 58%);
  animation:spinIn 1.1s cubic-bezier(.2,.8,.3,1);
}
@keyframes spinIn{from{transform:rotate(-90deg) scale(.85);opacity:0}to{transform:none;opacity:1}}
.donut-center{position:absolute;inset:0;display:grid;place-content:center;text-align:center}
.donut-center .num{font-size:40px;font-weight:800;line-height:1;letter-spacing:-1px}
.donut-center .lbl{font-size:12.5px;color:var(--muted);font-weight:600;margin-top:4px}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-top:8px}
.stat{
  background:var(--surface);border:1px solid var(--border);border-radius:18px;
  padding:22px;box-shadow:var(--shadow);position:relative;overflow:hidden;
  transition:transform .25s,box-shadow .25s;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.stat::after{content:'';position:absolute;top:0;right:0;width:100%;height:3px;background:var(--accent,var(--c-main))}
.stat .n{font-size:30px;font-weight:800;letter-spacing:-.5px;line-height:1.2}
.stat .t{font-size:13px;color:var(--muted);font-weight:600;margin-top:2px}

.cat-list{display:flex;flex-direction:column;gap:10px}
.cat-row{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
  overflow:hidden;box-shadow:var(--shadow);transition:box-shadow .25s;
}
.cat-row:hover{box-shadow:var(--shadow-lg)}
.cat-head{display:flex;align-items:center;gap:14px;padding:16px 20px;cursor:pointer;user-select:none}
.dot{width:11px;height:11px;border-radius:50%;flex-shrink:0;background:var(--accent)}
.cat-head .name{font-weight:700;font-size:15px;flex:1}
.cat-head .u{
  font-size:13px;font-weight:700;color:var(--accent);
  background:color-mix(in srgb,var(--accent) 12%,transparent);
  padding:3px 11px;border-radius:100px;white-space:nowrap;
}
.cat-head .caret{color:var(--muted);font-size:11px;transition:transform .3s}
.cat-row.open .caret{transform:rotate(180deg)}
.bar{height:4px;background:var(--surface-2);margin:0 20px;border-radius:4px;overflow:hidden}
.bar span{display:block;height:100%;background:var(--accent);border-radius:4px;width:0;transition:width .9s cubic-bezier(.2,.8,.3,1)}
.cat-body{max-height:0;overflow:hidden;transition:max-height .4s ease}
.cat-row.open .cat-body{max-height:1400px}
.courses{padding:16px 20px 20px;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:8px}
.course{
  display:flex;align-items:center;gap:9px;font-size:13.5px;
  padding:9px 13px;border-radius:10px;background:var(--surface-2);transition:.18s;
}
.course:hover{background:color-mix(in srgb,var(--accent) 10%,var(--surface-2))}
.course .cu{margin-inline-start:auto;font-size:11.5px;font-weight:700;color:var(--muted);background:var(--surface);padding:2px 8px;border-radius:6px;flex-shrink:0}
.tag-practical{font-size:10px;color:var(--c-elec);font-weight:700}

.path{display:flex;flex-direction:column;gap:0}
.stage{display:grid;grid-template-columns:74px 1fr;gap:20px;padding-bottom:26px;position:relative}
.stage:last-child{padding-bottom:0}
.stage::before{content:'';position:absolute;right:36px;top:56px;bottom:0;width:2px;background:linear-gradient(var(--border),transparent)}
.stage:last-child::before{display:none}
.stage-num{
  width:74px;height:74px;border-radius:20px;flex-shrink:0;
  display:grid;place-content:center;text-align:center;
  background:var(--surface);border:1px solid var(--border);
  box-shadow:var(--shadow);position:relative;z-index:1;
}
.stage-num .sn{font-size:11px;color:var(--muted);font-weight:600;line-height:1}
.stage-num .sv{font-size:19px;font-weight:800;color:var(--accent);line-height:1.3}
.stage-card{
  background:var(--surface);border:1px solid var(--border);border-radius:18px;
  padding:18px 20px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;
}
.stage-card:hover{transform:translateX(-3px);box-shadow:var(--shadow-lg)}
.stage-card h4{font-size:15px;font-weight:700;margin-bottom:10px}
.stage-card .pills{display:flex;flex-wrap:wrap;gap:6px}
.pill{font-size:12.5px;padding:5px 11px;border-radius:8px;background:var(--surface-2);color:var(--text);font-weight:500}
.pill.hi{background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--accent);font-weight:700}

.search-wrap{position:relative;margin-bottom:22px}
.search-wrap input{
  width:100%;padding:15px 48px 15px 20px;border-radius:14px;
  border:1px solid var(--border);background:var(--surface);color:var(--text);
  font-family:inherit;font-size:15px;box-shadow:var(--shadow);outline:none;transition:.2s;
}
.search-wrap input:focus{border-color:var(--c-main);box-shadow:0 0 0 4px color-mix(in srgb,var(--c-main) 14%,transparent)}
.search-wrap .ico{position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:17px;pointer-events:none}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.fbtn{
  font-family:inherit;font-size:12.5px;font-weight:600;cursor:pointer;
  padding:7px 14px;border-radius:100px;border:1px solid var(--border);
  background:var(--surface);color:var(--muted);transition:.2s;
}
.fbtn:hover{color:var(--text);border-color:var(--muted)}
.fbtn.active{background:var(--fc,var(--c-main));border-color:var(--fc,var(--c-main));color:#fff}
.results{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:10px}
.res{
  background:var(--surface);border:1px solid var(--border);border-radius:14px;
  padding:14px 16px;box-shadow:var(--shadow);display:flex;align-items:center;gap:10px;
  border-right:3px solid var(--accent);transition:transform .2s;
}
.res:hover{transform:translateY(-2px)}
.res .rn{font-size:13.5px;font-weight:600;flex:1}
.res .rc{font-size:11px;color:var(--muted);display:block;font-weight:500;margin-top:2px}
.res .ru{font-size:12px;font-weight:800;color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent);padding:3px 9px;border-radius:8px;flex-shrink:0}
.empty{text-align:center;padding:48px;color:var(--muted);font-size:14.5px}

.note{
  display:flex;gap:14px;padding:18px 20px;border-radius:16px;
  background:var(--surface);border:1px solid var(--border);
  box-shadow:var(--shadow);margin-bottom:12px;border-right:3px solid var(--accent);
}
.note .ni{font-size:19px;flex-shrink:0;line-height:1.5}
.note h5{font-size:14px;font-weight:700;margin-bottom:4px}
.note p{font-size:13.5px;color:var(--muted);line-height:1.85}

footer{border-top:1px solid var(--border);padding:34px 0;text-align:center;color:var(--muted);font-size:13px}
footer b{color:var(--text)}

.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}

@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .donut-box{width:190px;height:190px;margin:0 auto}
  .donut-center .num{font-size:34px}
}
@media(max-width:640px){
  .wrap{padding:0 16px}
  section{padding:48px 0}
  .hero{padding:48px 0 36px}
  .stage{grid-template-columns:56px 1fr;gap:12px}
  .stage-num{width:56px;height:56px;border-radius:15px}
  .stage-num .sv{font-size:16px}
  .stage::before{right:27px}
  .nav-links{display:none}
  .courses{grid-template-columns:1fr}
}