/* Elite Aircon V4.1 — with Projects + Form */
:root{
  --bg:#0b1020; --panel:#0f172a; --text:#e5e7eb; --muted:#94a3b8;
  --accent:#38bdf8; --ring:#ef4444; --line:rgba(148,163,184,.25)
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
a{color:var(--accent);text-decoration:none}
a:hover{opacity:.9}
.container{width:min(1120px,100%);margin:0 auto;padding:0 16px}
.header{position:sticky;top:0;z-index:10;background:rgba(11,16,32,.8);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:10px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#e2e8f0}
.logo{width:40px;height:40px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.nav a{margin-left:16px;color:#cbd5e1;font-weight:600}
.hero{background: radial-gradient(900px 400px at 20% -10%,rgba(56,189,248,.14),transparent 60%),radial-gradient(900px 400px at 120% 110%,rgba(239,68,68,.10),transparent 60%),var(--bg)}
.hero-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:center;padding:48px 0}
.hero-text h1{font-size:clamp(28px,40px,48px);margin:0 0 10px}
.hero-text h1 small{font-size:.6em;color:#c7d2fe;font-weight:600}
.hero-text p{margin:6px 0 10px;color:#dbeafe}
.pillbox{display:flex;gap:10px;flex-wrap:wrap;margin:8px 0 16px}
.pillbox span{padding:6px 12px;border-radius:999px;background:rgba(148,163,184,.08);border:1px solid var(--line);color:#cbd5e1;font-size:14px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:10px 16px;border-radius:12px;background:linear-gradient(135deg,var(--accent),#22d3ee);color:#001018;font-weight:800;border:1px solid rgba(255,255,255,.18);box-shadow:0 8px 24px rgba(34,211,238,.35)}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line);box-shadow:none}
.hero-art img{width:100%;border-radius:16px;border:1px solid var(--line);box-shadow:0 20px 60px rgba(0,0,0,.45)}
.section{padding:40px 0;border-top:1px solid var(--line)}
.section.alt{background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01))}
.section h2{margin:0 0 16px;font-size:28px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.01));border:1px solid var(--line);border-radius:16px;padding:16px}
.card h3{margin:0 0 8px}
.muted{color:var(--muted)}
.brand-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.brand-tags span{padding:6px 10px;border:1px solid var(--line);border-radius:999px;background:rgba(148,163,184,.06)}
.note{color:var(--muted)}
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}
.footer{border-top:1px solid var(--line);padding:16px 0;color:var(--muted);text-align:center}
/* Form */
.form{display:grid;gap:12px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.input, textarea{width:100%;padding:12px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.02);color:var(--text)}
textarea{min-height:120px;resize:vertical}
.badge{display:inline-block;padding:4px 8px;border:1px solid var(--line);border-radius:999px;font-size:12px;color:#cbd5e1}
@media (max-width:900px){.hero-inner{grid-template-columns:1fr}.grid{grid-template-columns:1fr}.contact-grid{grid-template-columns:1fr}.form .row{grid-template-columns:1fr}}