.llm-hero{padding:160px 0 80px;background:linear-gradient(145deg,#02050c,#07101f 60%,#0a1a2e);text-align:center}
.llm-hero h1{font-size:clamp(2rem,5vw,3.2rem);color:#fff;margin:.6rem 0 1rem;max-width:700px;margin-left:auto;margin-right:auto}
.llm-hero p{color:#8195aa;font-size:1.05rem;max-width:560px;margin:0 auto 2rem}
.llm-hero .mono{font:700 11px "JetBrains Mono";color:var(--cyan);letter-spacing:.1em;text-transform:uppercase;display:block;margin-bottom:12px}
.llm-section{background:#f7f9fb;padding-bottom:80px}
/* Alternating dark/light blocks */
.llm-block{border-radius:22px;padding:36px;margin-bottom:24px;transition:border-color .2s,background .2s;border:1px solid var(--line)}
.llm-block:nth-child(odd){background:#07111f;border-color:rgba(83,187,237,.18);box-shadow:0 8px 28px rgba(0,0,0,.28)}
.llm-block:nth-child(even){background:#fff;border-color:#e3eaf2;box-shadow:0 8px 24px rgba(15,23,42,.06)}
.llm-block:nth-child(odd):hover{border-color:rgba(83,187,237,.42);background:#0b1a2e}
.llm-block:nth-child(even):hover{border-color:rgba(0,112,171,.28);box-shadow:0 14px 36px rgba(15,23,42,.1)}
.llm-block h2{font-size:1.3rem;margin-bottom:14px;padding-bottom:14px}
.llm-block:nth-child(odd) h2{color:#fff;border-bottom:1px solid rgba(83,187,237,.18)}
.llm-block:nth-child(even) h2{color:var(--ink);border-bottom:1px solid var(--line)}
.llm-block:nth-child(odd) p{color:#8195aa;font-size:.9rem;line-height:1.85;margin-bottom:10px}
.llm-block:nth-child(even) p{color:var(--muted);font-size:.9rem;line-height:1.85;margin-bottom:10px}
.llm-block p:last-child{margin-bottom:0}
.llm-block ul{display:grid;gap:8px;margin:12px 0;padding:0;list-style:none}
.llm-block:nth-child(odd) li{color:#a0b3c7;font-size:.875rem;line-height:1.7}
.llm-block:nth-child(even) li{color:#526174;font-size:.875rem;line-height:1.7}
.llm-block li{position:relative;padding-left:20px;display:block}
.llm-block li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.llm-block:nth-child(odd) strong{color:#dfeaf4}
.llm-block:nth-child(even) strong{color:var(--ink)}
.llm-data-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px}
.llm-block:nth-child(odd) .llm-data-item{padding:16px;border:1px solid rgba(83,187,237,.16);border-radius:14px;background:rgba(255,255,255,.04)}
.llm-block:nth-child(even) .llm-data-item{padding:16px;border:1px solid var(--line);border-radius:14px;background:#f7f9fb}
.llm-data-item strong{display:block;font-size:1.4rem;font-weight:800;background:linear-gradient(135deg,var(--cyan),#7fe3ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.llm-data-item span{color:#6b8297;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em}
@media(max-width:700px){.llm-data-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:440px){.llm-data-grid{grid-template-columns:1fr}}