:root{
  --primary:#1e4db7; /* blue */
  --primary-600:#153d94;
  --accent:#e34234;  /* red */
  --accent-600:#c43126;
  --ink:#0f172a;
  --muted:#64748b;
  --bg:#f1f5f9;
  --card:#ffffff;
  --premium:#ffc107;
  --ok:#22c55e;
  --warn:#f59e0b;
  --err:#ef4444;
  --shadow:0 10px 30px rgba(2,6,23,.08);
  --radius:14px;
  --trans:all .25s ease;
}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Noto Sans",sans-serif;color:var(--ink);background:var(--bg);}
a{color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Header */
header{position:sticky;top:0;z-index:50;background:linear-gradient(135deg,var(--primary),var(--primary-600));color:#fff;box-shadow:var(--shadow)}
.hdr{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;gap:12px;align-items:center}
.brand i{font-size:28px}
.brand b{font-size:20px;letter-spacing:.2px}
nav ul{display:flex;gap:18px;list-style:none;padding:0;margin:0}
nav a{padding:8px 12px;border-radius:8px;color:#fff;text-decoration:none;font-weight:600;opacity:.9}
nav a:hover,nav a.active{background:rgba(255,255,255,.18);opacity:1}
.auth{display:flex;gap:10px}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:10px;padding:10px 14px;font-weight:700;cursor:pointer;transition:var(--trans)}
.btn-outline{background:transparent;color:#fff;border:2px solid #fff}
.btn-outline:hover{background:#fff;color:var(--primary)}
.btn-primary{background:var(--accent);color:#fff;border:2px solid var(--accent)}
.btn-primary:hover{background:var(--accent-600);border-color:var(--accent-600)}
.btn-premium{background:var(--premium);color:#1f2937;border:2px solid var(--premium)}
.tag{display:inline-flex;align-items:center;gap:8px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:800}
.tag-pro{background:#fee2e2;color:#b91c1c}

/* Hero */
.hero{padding:64px 0;background:linear-gradient(rgba(30,77,183,.92),rgba(21,61,148,.92)),url('https://images.unsplash.com/photo-1517512006864-7edc3b933137?q=80&w=1600&auto=format&fit=crop');background-size:cover;background-position:center;color:#fff;text-align:center}
.hero h1{margin:0 0 10px;font-size:42px;line-height:1.15}
.hero p{margin:0 auto 22px;max-width:780px;opacity:.95}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* Main grid */
.grid{display:grid;grid-template-columns:1fr 360px;gap:28px;padding:36px 0}
@media (max-width:1024px){.grid{grid-template-columns:1fr}}

/* Cards */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow)}
.card .hd{padding:18px 20px;border-bottom:1px solid #e2e8f0;display:flex;align-items:center;gap:12px}
.card .hd h3{margin:0;font-size:18px;color:var(--primary)}
.card .bd{padding:18px 20px}

/* Converter */
textarea#text{width:100%;min-height:180px;resize:vertical;border:1px solid #e2e8f0;border-radius:12px;padding:14px;font-size:15px;line-height:1.5}
.controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:16px 0}
@media (max-width:768px){.controls{grid-template-columns:1fr}}
.ctrl{display:flex;flex-direction:column;gap:8px}
.ctrl label{font-weight:700;color:#0f172a}
.ctrl input[type=range], .ctrl select{width:100%;padding:10px;border:1px solid #e2e8f0;border-radius:10px;background:#fff}
.hint{font-size:12px;color:var(--muted)}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.actions .btn{flex:1}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border-radius:999px;font-size:12px;background:#eef2ff;color:#3730a3;font-weight:800}

/* Sidebar */
.list{list-style:none;margin:0;padding:0}
.list li{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-bottom:1px solid #f1f5f9}
.list li:last-child{border-bottom:0}
.ok{color:var(--ok)}
.crown{color:var(--premium)}
.kpi{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.kpi .box{border-radius:12px;background:#f8fafc;padding:12px;text-align:center}
.kpi .val{font-size:22px;font-weight:800;color:var(--primary)}
.kpi .lbl{font-size:12px;color:var(--muted)}

/* Pricing */
.pricing{padding:60px 0;background:#f8fafc}
.pricing h2{text-align:center;margin:0 0 10px;color:var(--primary)}
.pricing p{max-width:780px;margin:0 auto 34px;text-align:center;color:var(--muted)}
.tiers{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.tier{background:#fff;border-radius:16px;box-shadow:var(--shadow);padding:26px;border:2px solid transparent;position:relative}
.tier.pop{border-color:var(--premium)}
.badge{position:absolute;right:-40px;top:16px;transform:rotate(45deg);background:var(--premium);color:#111827;font-weight:800;padding:4px 46px}
.price{font-size:36px;font-weight:900;margin:6px 0 14px}
.features{list-style:none;margin:0;padding:0}
.features li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid #f1f5f9}
.features li:last-child{border-bottom:0}

/* Footer */
footer{background:#0b1220;color:#cbd5e1;padding:40px 0;margin-top:40px}
.ft{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.ft h4{color:#fff;margin:0 0 12px}
.copy{margin-top:20px;border-top:1px solid #1f2937;text-align:center;padding-top:12px;font-size:13px}

/* Audio player */
.player{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:12px}
.player .row{display:flex;align-items:center;gap:12px}
.player .bar{flex:1;height:8px;background:#e2e8f0;border-radius:999px;position:relative;overflow:hidden}
.player .prog{position:absolute;left:0;top:0;bottom:0;width:0;background:linear-gradient(90deg,var(--primary),var(--accent))}