/* TopLinguist — modern sky-blue theme */
:root{
  --bg:#f6fbff;
  --card:#ffffff;
  --ink:#0f172a;
  --muted:#475569;
  --brand:#38bdf8;           /* sky blue */
  --brand-strong:#0284c7;    /* darker sky */
  --ring: rgba(2,132,199,.25);
  --shadow: 0 12px 30px rgba(2,8,23,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
.container{max-width:1100px;margin:0 auto;padding:0 16px}
/* Header/Nav */
.site-header{position:sticky;top:0;background:linear-gradient(90deg,var(--brand),var(--brand-strong));color:#fff;z-index:50;box-shadow:0 1px 0 rgba(255,255,255,.15)}
.navwrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0}
.brand{color:#fff;text-decoration:none;font-size:1.35rem;font-weight:800;letter-spacing:.2px}
.brand span{opacity:.9}
.nav{display:flex;gap:14px;align-items:center}
.nav a{color:#fff;text-decoration:none;font-weight:600;opacity:.95}
.nav .cta{background:#fff;color:var(--brand-strong);padding:8px 12px;border-radius:12px}
/* Mobile burger */
#nav-toggle{display:none}
.burger{display:none;cursor:pointer}
.burger span,.burger span:before,.burger span:after{content:"";display:block;height:3px;width:24px;background:#fff;border-radius:10px;transition:.2s}
.burger span:before{transform:translateY(-7px)}
.burger span:after{transform:translateY(4px)}
@media(max-width:720px){
  .burger{display:block}
  .nav{position:absolute;top:56px;left:0;right:0;background:linear-gradient(90deg,var(--brand),var(--brand-strong));flex-direction:column;padding:12px;display:none}
  #nav-toggle:checked ~ .nav{display:flex}
}
/* Layout */
.site-main{padding:28px 0 48px}
.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:16px;background:var(--card);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.hero h1{margin:.2rem 0 6px;font-size:2rem}
.hero p{color:var(--muted);margin:.5rem 0 1rem}
.badges{display:flex;flex-wrap:wrap;gap:8px}
.badge{background:#e0f2fe;color:#075985;border:1px solid #bae6fd;padding:6px 10px;border-radius:999px;font-weight:700;font-size:.85rem}
.cta-row{display:flex;gap:10px;flex-wrap:wrap}
.button{background:var(--brand-strong);color:#fff;border:none;padding:12px 16px;border-radius:12px;font-weight:800;cursor:pointer}
.button:focus{outline:3px solid var(--ring)}
.ghost{background:transparent;box-shadow:inset 0 0 0 2px #fff}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:22px}
.card{background:var(--card);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.card h3{margin:0 0 6px}
.card p{margin:0;color:var(--muted)}
/* Forms */
.form{background:var(--card);border-radius:16px;padding:20px;box-shadow:var(--shadow);max-width:760px}
.input{width:100%;padding:12px 14px;border:1px solid #e2e8f0;border-radius:12px;margin-bottom:12px;font-size:1rem}
.textarea{min-height:140px;resize:vertical}
.notice{padding:10px 12px;border-radius:12px;margin:10px 0}
.notice.success{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46}
.notice.error{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}
.honey{display:none}
/* Footer */
.site-footer{padding:28px 0;background:#f0f9ff;border-top:1px solid #e0f2fe;margin-top:28px}
.footgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}
.copyright{margin-top:10px;color:var(--muted);font-size:.9rem}