:root{
  --bg:#070a10;
  --bg-alt:#0c111a;
  --panel:#0f1621;
  --panel-2:#121a27;
  --line:#1d2734;
  --line-soft:#171f2b;
  --text:#e7edf5;
  --text-dim:#8fa0b3;
  --text-faint:#5b6c80;
  --accent:#2dd8ff;
  --accent-2:#7c5cff;
  --accent-dim:rgba(45,216,255,0.12);
  --good:#3ee08a;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
html,body{overflow-x:hidden;max-width:100%;}
body{
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(45,216,255,0.08), transparent 60%),
    radial-gradient(1000px 500px at 90% 10%, rgba(124,92,255,0.07), transparent 55%),
    var(--bg);
  color:var(--text);
  font-family:"Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height:1.55;
  min-height:100vh;
}
a{color:inherit;text-decoration:none;}
img,svg{display:block;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
::selection{background:var(--accent);color:#04121a;}

/* subtle scanline / grid texture */
.grid-overlay{
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(rgba(45,216,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45,216,255,0.035) 1px, transparent 1px);
  background-size:42px 42px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 80%);
  opacity:0.6;
}

/* HEADER */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(7,10,16,0.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px;position:relative;}
.brand{display:flex;align-items:center;gap:12px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:15px;letter-spacing:0.5px;color:var(--text);}
.brand-text span{font-size:11px;color:var(--text-faint);text-transform:uppercase;letter-spacing:1.5px;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{font-size:14px;color:var(--text-dim);transition:color .15s;}
.nav-links a:hover{color:var(--accent);}
.nav-right{display:flex;align-items:center;gap:14px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:9px;font-size:14px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg, var(--accent), var(--accent-2));
  color:#04121a;
  box-shadow:0 0 0 1px rgba(45,216,255,0.25), 0 10px 30px -12px rgba(45,216,255,0.55);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-ghost{
  background:transparent;border:1px solid var(--line);color:var(--text);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}

.burger{
  display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;
}
.burger span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:all .2s;}

.sound-toggle{
  flex:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--panel);color:var(--text-dim);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all .15s;
}
.sound-toggle:hover{border-color:var(--accent);color:var(--accent);}
.sound-toggle .icon-on{display:none;}
.sound-toggle.is-playing{border-color:rgba(45,216,255,0.5);color:var(--accent);background:var(--accent-dim);}
.sound-toggle.is-playing .icon-off{display:none;}
.sound-toggle.is-playing .icon-on{display:block;}
.sound-toggle.is-playing{animation:soundPulse 2.4s ease-in-out infinite;}
@keyframes soundPulse{
  0%,100%{box-shadow:0 0 0 0 rgba(45,216,255,0.35);}
  50%{box-shadow:0 0 0 6px rgba(45,216,255,0);}
}

/* HERO */
.hero{
  position:relative;padding:150px 0 120px;overflow:hidden;
  background-image:url('../img/hero-bg.svg');
  background-size:cover;
  background-position:center top;
  background-repeat:no-repeat;
}
.hero::before{
  content:"";position:absolute;top:-200px;left:50%;transform:translateX(-50%);
  width:900px;height:900px;border-radius:50%;
  background:radial-gradient(circle, rgba(45,216,255,0.12), transparent 65%);
  pointer-events:none;
  z-index:0;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg, rgba(4,6,10,0.94) 0%, rgba(4,6,10,0.8) 32%, rgba(4,6,10,0.35) 58%, rgba(4,6,10,0.12) 100%),
    linear-gradient(180deg, rgba(5,7,10,0.05) 0%, rgba(5,7,10,0.25) 55%, rgba(7,10,16,0.82) 88%, var(--bg) 100%);
  pointer-events:none;
  z-index:0;
}
.hero > .wrap{position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:1.5px;text-transform:uppercase;
  color:var(--accent);border:1px solid rgba(45,216,255,0.3);
  background:var(--accent-dim);padding:6px 14px;border-radius:999px;
  margin-bottom:28px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--good);box-shadow:0 0 8px var(--good);}
h1{
  font-size:clamp(34px,5vw,58px);
  font-weight:800;letter-spacing:-1px;line-height:1.08;
  max-width:820px;margin-bottom:22px;
}
h1 .accent{
  background:linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{font-size:18px;color:var(--text-dim);max-width:620px;margin-bottom:38px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:64px;}

.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line-soft);border:1px solid var(--line-soft);
  border-radius:var(--radius);overflow:hidden;
}
.stat{background:var(--panel);padding:26px 20px;text-align:left;}
.stat b{
  display:block;font-size:28px;font-weight:800;
  background:linear-gradient(135deg,#fff,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:6px;
}
.stat span{font-size:13px;color:var(--text-dim);}

/* SECTION shared */
section{padding:88px 0;position:relative;z-index:1;}
.section-head{max-width:640px;margin-bottom:52px;}
.kicker{
  font-size:12px;letter-spacing:2px;text-transform:uppercase;
  color:var(--accent);font-weight:700;margin-bottom:14px;display:block;
}
.section-head h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-0.5px;margin-bottom:14px;}
.section-head p{color:var(--text-dim);font-size:16px;}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);}

/* THREE PILLARS (institutions) */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.pillar{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;position:relative;transition:transform .2s, border-color .2s;
}
.pillar:hover{transform:translateY(-4px);border-color:rgba(45,216,255,0.4);}
.pillar .icon{
  width:46px;height:46px;border-radius:11px;
  background:var(--accent-dim);border:1px solid rgba(45,216,255,0.3);
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
  color:var(--accent);
}
.pillar h3{font-size:19px;font-weight:700;margin-bottom:6px;}
.pillar .tag{font-size:13px;color:var(--accent);font-weight:600;margin-bottom:14px;display:block;}
.pillar p{font-size:14.5px;color:var(--text-dim);}

/* HIERARCHY */
.hierarchy{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.hcard{
  background:linear-gradient(180deg, var(--panel-2), var(--panel));
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.hcard-head{padding:22px 24px;border-bottom:1px solid var(--line);}
.hcard-head b{font-size:17px;}
.hcard-head span{display:block;font-size:12.5px;color:var(--text-faint);margin-top:4px;}
.rank-list{padding:8px 0;}
.rank{
  display:flex;align-items:center;gap:14px;padding:13px 24px;
  border-bottom:1px solid var(--line-soft);
}
.rank:last-child{border-bottom:none;}
.rank .n{
  width:26px;height:26px;flex:none;border-radius:7px;
  background:var(--accent-dim);border:1px solid rgba(45,216,255,0.25);
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;color:var(--accent);
}
.rank div b{display:block;font-size:14px;font-weight:600;}
.rank div span{font-size:12.5px;color:var(--text-faint);}

/* PRINCIPLES */
.principles{display:flex;flex-direction:column;gap:0;}
.principle{
  display:grid;grid-template-columns:80px 1fr;gap:26px;
  padding:34px 0;border-bottom:1px solid var(--line-soft);
}
.principle:first-child{padding-top:0;}
.principle:last-child{border-bottom:none;}
.principle .num{
  font-size:34px;font-weight:800;color:transparent;
  -webkit-text-stroke:1.5px var(--line);
}
.principle h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.principle p{color:var(--text-dim);font-size:15px;max-width:640px;}

/* INFRASTRUCTURE */
.infra-wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.infra-copy h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin-bottom:16px;}
.infra-copy p{color:var(--text-dim);font-size:15.5px;margin-bottom:0;}
.infra-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.infra-item{
  background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:20px 18px;font-size:14.5px;font-weight:600;
  display:flex;align-items:center;gap:12px;
}
.infra-item .dot2{width:8px;height:8px;border-radius:2px;background:var(--accent);box-shadow:0 0 10px var(--accent);flex:none;}

/* SCHEDULE + PROCESS */
.split{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.box{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px;
}
.box h3{font-size:20px;font-weight:700;margin-bottom:10px;}
.box p{color:var(--text-dim);font-size:14.5px;margin-bottom:18px;}
.schedule-time{
  font-size:30px;font-weight:800;color:var(--accent);letter-spacing:-0.5px;margin-bottom:4px;
}
.steps{counter-reset:step;}
.step{
  display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--line-soft);
}
.step:last-child{border-bottom:none;}
.step .sn{
  counter-increment:step;flex:none;width:24px;height:24px;border-radius:50%;
  background:var(--accent-dim);border:1px solid rgba(45,216,255,0.3);
  font-size:11px;font-weight:700;color:var(--accent);
  display:flex;align-items:center;justify-content:center;
}
.step .sn::before{content:counter(step);}
.step b{font-size:14px;display:block;}
.step span{font-size:13px;color:var(--text-faint);}

/* CTA */
.cta{
  text-align:center;padding:90px 24px;border-radius:24px;
  background:
    radial-gradient(600px 300px at 50% 0%, rgba(45,216,255,0.12), transparent 70%),
    var(--panel);
  border:1px solid var(--line);
  max-width:1180px;margin:0 auto;
}
.cta h2{font-size:clamp(26px,4vw,40px);font-weight:800;margin-bottom:16px;}
.cta p{color:var(--text-dim);max-width:520px;margin:0 auto 34px;font-size:16px;}

footer{border-top:1px solid var(--line-soft);padding:36px 0;margin-top:40px;}
.foot-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;}
.foot-row span{font-size:12.5px;color:var(--text-faint);}

@media(max-width:900px){
  .stats{grid-template-columns:repeat(2,1fr);}
  .pillars,.hierarchy{grid-template-columns:1fr;}
  .infra-wrap,.split{grid-template-columns:1fr;}

  .burger{display:flex;}
  .nav-links{
    display:flex;flex-direction:column;align-items:flex-start;gap:0;
    position:absolute;top:76px;left:0;right:0;
    background:rgba(7,10,16,0.98);border-bottom:1px solid var(--line-soft);
    max-height:0;overflow:hidden;transition:max-height .25s ease;
  }
  .nav-links.open{max-height:320px;}
  .nav-links a{width:100%;padding:14px 24px;border-bottom:1px solid var(--line-soft);}

  /* хедер: убираем крупную CTA-кнопку с панели на мобильных —
     она дублирует кнопки в hero/CTA-секциях и не влезает в одну строку */
  .nav-right .btn-primary{display:none;}
  .nav-right{gap:8px;}
  .nav{height:auto;min-height:76px;padding-top:10px;padding-bottom:10px;}
}

@media(max-width:480px){
  .wrap{padding:0 16px;}
  .hero{padding-top:130px;}
  .brand-text span{font-size:9.5px;letter-spacing:1px;}
  .stat b{white-space:nowrap;}
  .eyebrow{font-size:11px;padding:6px 12px;}
  .rules-toc{gap:8px;}
}