/* RadioLab — общий стиль */
:root{
  --bg:#080d12;
  --bg2:#0c141b;
  --panel:#101a23;
  --line:#1c2b38;
  --line2:#243647;
  --text:#d7e3eb;
  --muted:#7e94a4;
  --dim:#54697a;
  --accent:#38d3bd;
  --accent2:#6ee7d4;
  --mark:#f2b45a;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font:16px/1.7 -apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.mono{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace}

/* шапка */
header{position:sticky;top:0;z-index:10;background:rgba(8,13,18,.9);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.bar{display:flex;align-items:center;gap:26px;height:66px}
.logo{font-weight:700;letter-spacing:.14em;font-size:14.5px;text-transform:uppercase}
.logo span{color:var(--accent)}
nav{margin-left:auto;display:flex;gap:22px;flex-wrap:wrap}
nav a{color:var(--muted);font-size:14px}
nav a:hover,nav a.on{color:var(--text);text-decoration:none}

/* герой */
.hero{padding:78px 0 54px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.kicker{color:var(--accent);font-size:12.5px;letter-spacing:.2em;
  text-transform:uppercase;margin-bottom:18px}
.hero h1{font-size:clamp(29px,4.4vw,46px);line-height:1.14;margin:0 0 20px;
  font-weight:650;letter-spacing:-.015em;max-width:820px}
.hero p{color:var(--muted);max-width:660px;margin:0 0 12px}
.hero .lead{color:var(--text);font-size:18px}
.spectrum{display:flex;align-items:flex-end;gap:3px;height:96px;margin-top:38px}
.spectrum i{flex:1;border-radius:1px 1px 0 0;
  background:linear-gradient(180deg,var(--accent),#134e48);opacity:.85}
.spectrum i:nth-child(7n){background:linear-gradient(180deg,var(--accent2),#134e48)}

/* секции */
section{padding:58px 0;border-bottom:1px solid var(--line)}
section:last-of-type{border-bottom:none}
h2{font-size:23px;margin:0 0 8px;font-weight:600;letter-spacing:-.01em}
.sub{color:var(--dim);font-size:14.5px;margin:0 0 28px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;
  padding:22px 22px 24px;transition:border-color .15s}
.card:hover{border-color:var(--line2)}
.card h3{margin:0 0 10px;font-size:16.5px;font-weight:600}
.card p{margin:0;color:var(--muted);font-size:14.5px}
.tag{display:inline-block;font-size:11px;letter-spacing:.11em;text-transform:uppercase;
  color:#7fd8cb;border:1px solid #24665e;border-radius:4px;padding:2px 8px;margin-bottom:12px}

/* список заметок */
.notes{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.note{border-left:2px solid #24665e;padding:2px 0 2px 16px}
.note time{display:block;color:var(--dim);font-size:12.5px;margin-bottom:6px}
.note h3{margin:0 0 6px;font-size:16px;font-weight:600}
.note p{margin:0;color:var(--muted);font-size:14.5px}

/* текстовая страница */
.article{max-width:760px;padding:60px 0}
.article h1{font-size:clamp(26px,3.6vw,36px);margin:0 0 10px;letter-spacing:-.015em}
.article .meta{color:var(--dim);font-size:13.5px;margin-bottom:34px}
.article h2{font-size:20px;margin:38px 0 12px}
.article h3{font-size:16.5px;margin:26px 0 8px}
.article p,.article li{color:#b9c9d4}
.article ul,.article ol{padding-left:22px}
.article li{margin:6px 0}
.article code{background:#0e1720;border:1px solid var(--line);border-radius:4px;
  padding:1px 6px;color:var(--accent);font-size:13.5px}
.article pre{background:#0b131a;border:1px solid var(--line);border-radius:8px;
  padding:14px 16px;overflow-x:auto;color:#a9c4d4;font-size:13.5px}
.callout{border-left:2px solid var(--mark);padding:2px 0 2px 16px;margin:22px 0;
  color:var(--muted);font-size:14.5px}

/* таблица */
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{color:var(--dim);font-weight:500;font-size:13px;text-transform:uppercase;
  letter-spacing:.06em}
td{color:#b9c9d4}

/* подвал */
footer{padding:44px 0 60px;color:var(--dim);font-size:14px}
footer .row{display:flex;gap:28px;flex-wrap:wrap;color:var(--muted)}
footer .fine{margin-top:20px;font-size:12.5px;color:#41525f;max-width:640px}

.btn{display:inline-block;border:1px solid var(--line2);border-radius:8px;
  padding:10px 20px;font-size:14.5px;color:var(--text)}
.btn:hover{border-color:var(--accent);text-decoration:none}

@media (max-width:620px){
  .bar{gap:14px;height:auto;padding:14px 0;flex-wrap:wrap}
  nav{gap:14px}
  .hero{padding:52px 0 40px}
}