:root{--navy:#0b3a63;--blue:#149ee5;--red:#f3202b;--green:#13b95e;--ink:#102437;--muted:#66717d;--light:#f4f8fb;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);line-height:1.5;background:#fff}
a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{width:min(1200px,92%);margin:auto}
.top{background:var(--navy);color:#fff;padding:8px 0;font-size:14px}.top .container{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
header{background:#fff;position:sticky;top:0;z-index:50;border-bottom:1px solid #e3e8ed}.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 0}
.brand{font-size:27px;font-weight:900;color:var(--navy);line-height:.95}.brand span{display:block;color:var(--blue)}.brand small{font-size:10px;letter-spacing:.7px}.menu{display:flex;gap:22px;font-weight:700}.menu a:hover{color:var(--blue)}.calltop{background:var(--red);color:#fff;padding:11px 18px;border-radius:9px;font-weight:900}
.hero{background:linear-gradient(90deg,rgba(8,42,70,.97),rgba(8,42,70,.8) 45%,rgba(8,42,70,.1)),url('hero-aircon.jpg') center/cover;color:#fff}.hero .content{padding:58px 0;max-width:700px}.hero h1{font-size:54px;line-height:1.02;margin:8px 0 15px;text-transform:uppercase}.hero h1 span{color:var(--blue)}.hero p{font-size:18px}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:9px 18px}.checks div:before{content:"✓";background:var(--blue);border-radius:50%;padding:2px 6px;margin-right:8px}.cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px}.btn{display:inline-block;padding:15px 22px;border-radius:8px;font-weight:900;color:#fff}.red{background:var(--red)}.green{background:var(--green)}.blue{background:var(--blue)}
.services{padding:20px 0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card{border:1px solid #e3e7eb;border-radius:10px;overflow:hidden;box-shadow:0 5px 16px rgba(0,0,0,.05)}.card img{width:100%;height:190px;object-fit:cover}.pad{padding:14px}.card h3{margin:0 0 6px}.card p{font-size:13px;color:var(--muted)}.learn{color:var(--blue);font-weight:900}
.brands{background:#f6f8fa;padding:18px 0;border-top:1px solid #e4e8ec;border-bottom:1px solid #e4e8ec}.brandrow{display:flex;justify-content:space-around;gap:18px;flex-wrap:wrap;font-weight:900;font-size:23px;color:#1b5c91}.brandrow span:nth-child(even){color:#d81f2a}
.features{background:#f5f8fb;padding:18px 0}.fgrid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.fgrid div{text-align:center;font-weight:800}
.cover{background:linear-gradient(90deg,#0c3e66,#eef4f7);padding:34px 0}.cgrid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:22px}.panel{background:#fff;border-radius:12px;padding:22px}.panel.dark{background:#0c3e66;color:#fff}.panel.quote{background:var(--navy);color:#fff}.area{columns:2;list-style:none;padding:0}.area li:before{content:"✓ ";color:var(--blue);font-weight:900}
.content{padding:40px 0}.two{display:grid;grid-template-columns:1.4fr .8fr;gap:28px}.box{background:#f7f9fb;border:1px solid #e3e8eb;border-radius:12px;padding:22px}input,select,textarea{width:100%;padding:12px;margin-bottom:10px;border:1px solid #ccd5dd;border-radius:8px;font:inherit}button{border:0;width:100%;cursor:pointer}
.hero-mini{background:linear-gradient(90deg,#0b3a63,#1a74aa);color:#fff;padding:44px 0}
footer{padding:30px 0 80px;border-top:1px solid #e4e8eb}.foot{display:grid;grid-template-columns:1.2fr 1fr 1.2fr 1.2fr;gap:24px}.foot a{display:block;color:#55616a;margin:5px 0}.copy{background:var(--navy);color:#fff;padding:12px 0}.mobile{display:none}
@media(max-width:950px){.menu{display:none}.grid{grid-template-columns:repeat(2,1fr)}.cgrid,.two,.foot{grid-template-columns:1fr 1fr}.fgrid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:650px){.top .container{justify-content:center;text-align:center}.brand{font-size:20px}.calltop{display:none}.hero h1{font-size:36px}.checks,.grid,.cgrid,.two,.foot,.fgrid{grid-template-columns:1fr}.mobile{display:grid;grid-template-columns:1fr 1fr;position:fixed;bottom:0;left:0;right:0;z-index:99}.mobile a{text-align:center;padding:15px;font-weight:900;color:#fff}.mobile .c{background:var(--red)}.mobile .w{background:var(--green)}}