:root{--navy:#1a2332;--navy-dark:#0f1720;--orange:#ff6900;--orange-dark:#e55e00;--orange-light:#fff3e8;--ecobee:#3d5e6b;--ecobee-light:#e8eff2;--white:#fff;--gray-50:#f8f9fa;--gray-100:#f1f3f5;--gray-200:#e9ecef;--gray-600:#6c757d;--gray-800:#343a40;--gray-900:#212529;--beige:#e8e4de;--shadow-sm:0 2px 8px rgba(0,0,0,.06);--shadow-md:0 4px 16px rgba(0,0,0,.1);--shadow-lg:0 8px 32px rgba(0,0,0,.14);--rl:12px;--tr:all .25s ease}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,sans-serif;color:var(--gray-900);background:var(--white);-webkit-font-smoothing:antialiased;line-height:1.6}
a{text-decoration:none;color:inherit}img{max-width:100%;height:auto;display:block}
.tb{background:#ddd5c7;color:var(--gray-800);font-size:.78rem;border-bottom:3px solid var(--orange)}
.tb-in{max-width:1320px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;align-items:center;height:34px}
.tb a{color:var(--gray-800);transition:color .2s;display:inline-flex;align-items:center;gap:5px;font-weight:500}
.tb a:hover{color:var(--orange)}.tb-l,.tb-r{display:flex;gap:18px}
.nav{background:var(--white);position:sticky;top:0;z-index:1000;box-shadow:var(--shadow-sm)}
.nav-in{max-width:1320px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:70px}
.nav-logo img{height:38px}.nl{display:flex;gap:24px;align-items:center}
.nl a{font-size:.88rem;font-weight:600;color:var(--gray-800);transition:color .2s}
.nl a:hover{color:var(--orange)}.nl .act{color:var(--orange)}
.nb{padding:10px 22px;border-radius:30px;font-size:.84rem;font-weight:600;transition:var(--tr);display:inline-flex;align-items:center;gap:7px;cursor:pointer;border:none}
.nb-or{background:var(--orange);color:var(--white)}.nb-or:hover{background:var(--orange-dark)}
.mob{display:none;background:none;border:none;font-size:1.4rem;cursor:pointer;color:var(--gray-800);padding:8px}
.snav{background:var(--white);border-bottom:1px solid var(--gray-200);position:sticky;top:70px;z-index:90;padding:0 24px}
.snav-in{max-width:1320px;margin:0 auto;display:flex;gap:0;overflow-x:auto}
.snav a{padding:14px 20px;font-size:.84rem;font-weight:600;color:var(--gray-600);white-space:nowrap;border-bottom:3px solid transparent;transition:var(--tr)}
.snav a:hover,.snav a.act{color:var(--ecobee);border-bottom-color:var(--ecobee)}
.sec{padding:80px 24px}.sec-alt{background:var(--gray-50)}.sec-beige{background:var(--beige)}
.sec-navy{background:var(--navy);color:var(--white)}
.sec-in{max-width:1320px;margin:0 auto}
.sh{text-align:center;margin-bottom:52px}
.sh h2{font-size:1.95rem;font-weight:800;margin-bottom:10px;line-height:1.2}
.sh p{font-size:1.02rem;color:var(--gray-600);max-width:640px;margin:0 auto}
.sec-navy .sh h2{color:var(--white)}.sec-navy .sh p{color:rgba(255,255,255,.75)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-img img{border-radius:var(--rl);box-shadow:var(--shadow-md);transition:transform .6s cubic-bezier(.25,.46,.45,.94),box-shadow .6s ease}
.split-img img:hover{transform:perspective(800px) rotateY(-3deg) rotateX(2deg) scale(1.06);box-shadow:12px 16px 40px rgba(0,0,0,.25)}
.split-txt .tag{display:inline-block;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.8px;padding:4px 12px;border-radius:20px;margin-bottom:10px}
.split-txt .tag-eco{background:var(--ecobee-light);color:var(--ecobee)}.split-txt .tag-or{background:var(--orange-light);color:var(--orange)}
.split-txt h2{font-size:1.65rem;font-weight:800;margin-bottom:12px;line-height:1.2}
.split-txt p{font-size:.95rem;color:var(--gray-600);line-height:1.7;margin-bottom:14px}
.split-txt ul{list-style:none;margin:16px 0 20px}
.split-txt li{padding:10px 0 10px 28px;position:relative;font-size:.9rem;color:var(--gray-800);line-height:1.5;border-bottom:1px solid var(--gray-100)}
.split-txt li:last-child{border-bottom:none}
.split-txt li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;color:var(--orange);font-size:.8rem;top:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:30px;font-size:.95rem;font-weight:700;transition:var(--tr);cursor:pointer;border:none}
.btn-or{background:var(--orange);color:var(--white)}.btn-or:hover{background:var(--orange-dark);transform:translateY(-2px)}
.btn-eco{background:var(--ecobee);color:var(--white)}.btn-eco:hover{background:#2d4a55;transform:translateY(-2px)}
.btn-out{background:transparent;color:var(--white);border:2px solid rgba(255,255,255,.4);border-radius:30px}.btn-out:hover{background:rgba(255,255,255,.1)}
.btn-eco-out{background:transparent;color:var(--ecobee);border:2px solid var(--ecobee);border-radius:30px}.btn-eco-out:hover{background:var(--ecobee);color:var(--white)}
.feat-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feat-card{background:var(--white);border-radius:var(--rl);padding:32px 24px;box-shadow:var(--shadow-sm);border-top:4px solid transparent;transition:var(--tr)}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-top-color:var(--orange)}
.feat-card i{font-size:2rem;color:var(--ecobee);margin-bottom:14px;display:block}
.feat-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.feat-card p{font-size:.88rem;color:var(--gray-600);line-height:1.65}
.compat{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.compat-col h3{font-size:1.05rem;font-weight:700;margin-bottom:16px;color:var(--ecobee);padding-bottom:8px;border-bottom:2px solid var(--ecobee-light)}
.compat-col ul{list-style:none}
.compat-col li{padding:9px 0 9px 26px;position:relative;font-size:.9rem;color:var(--gray-800);border-bottom:1px solid var(--gray-100)}
.compat-col li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;color:var(--orange);font-size:.75rem;top:11px}
.cta-b{padding:80px 24px;text-align:center;background:linear-gradient(135deg,var(--navy),var(--navy-dark));color:var(--white)}
.cta-b h2{font-size:2rem;font-weight:800;margin-bottom:14px}
.cta-b p{font-size:1.05rem;opacity:.8;margin-bottom:28px;max-width:520px;margin-left:auto;margin-right:auto}
.ft{background:var(--navy);color:rgba(255,255,255,.6);padding:32px 24px;text-align:center;font-size:.85rem}
.ft a{color:rgba(255,255,255,.6);transition:color .2s}.ft a:hover{color:var(--orange)}
@media(max-width:1024px){.hero-in,.split,.compat{grid-template-columns:1fr;gap:32px}.feat-3{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.tb{display:none}.nl{display:none}.mob{display:block}.feat-3{grid-template-columns:1fr}.hero{padding:56px 24px 40px}.sec{padding:52px 20px}}

.hero-pc{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-dark) 100%);padding:90px 24px 70px;color:var(--white);position:relative;overflow:hidden}
.hero-pc::before{content:"";position:absolute;inset:0;background:url("/files/ecobee-pwrcell-hero.webp") center/cover no-repeat;opacity:.13}
.hero-pc .hero-in{max-width:1320px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero-pc .badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,105,0,.18);border:1px solid rgba(255,105,0,.4);color:#ffb87a;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.8px;padding:5px 14px;border-radius:20px;margin-bottom:18px}
.hero-pc h1{font-size:clamp(1.9rem,4vw,2.9rem);font-weight:800;line-height:1.1;margin-bottom:16px}
.hero-pc h1 span{color:var(--orange)}
.hero-pc .hero-sub{font-size:1rem;color:rgba(255,255,255,.75);line-height:1.75;max-width:480px;margin-bottom:28px}
.hero-pc .hero-img img{border-radius:var(--rl);box-shadow:0 12px 48px rgba(0,0,0,.4)}
.sg-box{background:linear-gradient(135deg,#1e3a4a,#2a5068);border-radius:var(--rl);padding:40px;color:var(--white);position:relative;overflow:hidden}
.sg-box .sg-tag{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:#7ec8e3;margin-bottom:10px;display:block}
.sg-box h3{font-size:1.4rem;font-weight:800;margin-bottom:12px}
.sg-box p{font-size:.92rem;color:rgba(255,255,255,.78);line-height:1.72;margin-bottom:14px}
.sg-box ul{list-style:none}
.sg-box li{padding:7px 0 7px 24px;position:relative;font-size:.88rem;color:rgba(255,255,255,.82)}
.sg-box li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;color:#7ec8e3;font-size:.75rem;top:10px}
@media(max-width:768px){.hero-pc .hero-in{grid-template-columns:1fr}}