:root{--bt-bg:#03101c;--bt-panel:#071b2e;--bt-panel2:#061525;--bt-line:#17c9f4;--bt-text:#eef9ff;--bt-muted:#b9ccda;--bt-cyan:#35dcff;--bt-green:#78e5b0}
html{scroll-padding-top:205px}
body{background:radial-gradient(circle at 50% 0,#0b2743 0,#041421 34%,#020913 100%);color:var(--bt-text)}
.wrap.battery-phase3{max-width:1420px;margin:0 auto;padding:0 18px 48px}
.bt-hero{position:relative;min-height:430px;margin:18px 0 18px;border:1px solid rgba(23,201,244,.38);border-radius:18px;overflow:hidden;background:#071626;box-shadow:0 18px 48px rgba(0,0,0,.32)}
.bt-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bt-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(1,10,20,.98) 0%,rgba(2,14,27,.92) 29%,rgba(2,14,27,.52) 49%,rgba(2,14,27,.06) 75%),linear-gradient(0deg,rgba(1,9,18,.55),rgba(1,9,18,.02) 45%)}
.bt-hero-copy{position:relative;z-index:2;width:min(610px,54%);padding:38px 34px 34px}
.bt-kicker,.mini{font-size:.72rem;font-weight:900;letter-spacing:.2em;text-transform:uppercase;color:#42e2ff}.bt-hero h1{font-size:clamp(3.1rem,6vw,6rem);line-height:.86;margin:9px 0 14px;font-family:Arial,sans-serif;letter-spacing:-.04em}.bt-hero h1 span{color:var(--bt-cyan)}
.bt-hero .lead{font-size:1.07rem;line-height:1.55;color:#f4fbff;margin:0 0 13px}.bt-hero .summary{color:#bcd2df;line-height:1.55;margin:0 0 20px}.bt-badges{display:flex;flex-wrap:wrap;gap:9px}.bt-badge{display:inline-flex;align-items:center;padding:8px 11px;border:1px solid rgba(53,220,255,.48);border-radius:999px;background:rgba(4,26,44,.75);color:#dff9ff;font-size:.8rem;font-weight:800}.bt-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}.bt-actions a,.bt-open{display:inline-flex;width:max-content;align-items:center;padding:9px 13px;border:1px solid rgba(53,220,255,.55);border-radius:999px;color:#72ecff;text-decoration:none;font-weight:850;background:rgba(4,27,45,.78)}
.bt-actions a:hover,.bt-open:hover{border-color:#52e5ff;color:white}.section-head{display:flex;justify-content:space-between;align-items:end;gap:18px;flex-wrap:wrap;margin:26px 0 12px}.section-head h2{font-family:Georgia,serif;font-size:clamp(2rem,3.6vw,3.5rem);line-height:.98;margin:4px 0 0}.section-head p{max-width:520px;margin:0;color:var(--bt-muted);line-height:1.5}
.bt-grid5{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.bt-card,.bt-panel,.bt-tech,.bt-detail,.bt-link-card{border:1px solid rgba(23,201,244,.3);border-radius:14px;background:linear-gradient(180deg,rgba(8,29,49,.97),rgba(4,16,28,.98));overflow:hidden}.bt-card{display:flex;flex-direction:column}.bt-card img,.bt-tech img,.bt-detail img{width:100%;display:block;object-fit:cover}.bt-card img{aspect-ratio:16/9}.bt-card-body{padding:14px 14px 16px;display:flex;flex:1;flex-direction:column}.bt-card h3{font-family:Georgia,serif;font-size:1.45rem;line-height:1.04;margin:7px 0}.bt-card p{color:var(--bt-muted);line-height:1.4;margin:0 0 8px}.bt-card ul{padding:0 0 0 17px;margin:6px 0 0;color:#dff5ff;line-height:1.45;font-size:.9rem}.bt-card li{margin-bottom:4px}
.bt-band-grid{display:grid;grid-template-columns:1.1fr 1.35fr .95fr;gap:12px}.bt-panel{display:flex;flex-direction:column;min-height:100%}.bt-panel img{width:100%;aspect-ratio:16/7;object-fit:cover}.bt-panel-body{padding:15px;display:flex;flex-direction:column;flex:1}.bt-panel h3{font-family:Georgia,serif;font-size:1.5rem;line-height:1.05;margin:6px 0 8px}.bt-panel p{color:var(--bt-muted);margin:0;line-height:1.45}.bt-pill{display:inline-flex;width:max-content;margin-top:13px;padding:7px 10px;border:1px solid rgba(53,220,255,.38);border-radius:999px;color:#85efff;font-size:.78rem;font-weight:850}
.bt-table-wrap{overflow:auto;border:1px solid rgba(23,201,244,.26);border-radius:14px;background:rgba(5,19,33,.92)}.bt-table{width:100%;border-collapse:collapse;min-width:900px}.bt-table th,.bt-table td{padding:11px 13px;border-bottom:1px solid rgba(23,201,244,.13);vertical-align:top}.bt-table th{background:#08243b;color:#5ce7ff;text-transform:uppercase;letter-spacing:.13em;font-size:.76rem}.bt-table td{color:#d7eaf5}.bt-table tr:last-child td{border-bottom:0}
.bt-next-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.bt-next-panel{border:1px solid rgba(23,201,244,.3);border-radius:16px;background:linear-gradient(180deg,rgba(8,29,49,.98),rgba(4,16,28,.98));padding:15px}.bt-next-title h3{font-family:Georgia,serif;font-size:1.8rem;line-height:1.02;margin:6px 0 5px}.bt-next-title p{color:var(--bt-muted);margin:0 0 12px}.bt-tech-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.bt-tech{display:flex;flex-direction:column}.bt-tech img{aspect-ratio:4/3}.bt-tech-body{padding:10px;display:flex;flex-direction:column;flex:1}.bt-tech h4{font-size:.98rem;line-height:1.1;margin:0 0 6px}.bt-tech p{font-size:.83rem;line-height:1.35;color:var(--bt-muted);margin:0 0 8px}.bt-meter{margin-top:auto;color:#7cecff;font-weight:850;font-size:.78rem}.bt-note{margin:10px 0 0;padding:10px 12px;border-left:3px solid var(--bt-cyan);background:rgba(53,220,255,.055);color:#a9c8d9;font-size:.82rem;line-height:1.45}
.bt-detail-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.bt-detail{display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:.18s}.bt-detail:hover,.bt-link-card:hover{border-color:#45dbff;transform:translateY(-2px)}.bt-detail img{aspect-ratio:16/6}.bt-detail-body{padding:12px 13px 14px}.bt-detail h3{font-family:Georgia,serif;font-size:1.32rem;line-height:1.05;margin:0 0 6px}.bt-detail p{margin:0;color:var(--bt-muted);line-height:1.4}
.bt-storage-link{display:grid;grid-template-columns:1.05fr 1fr;gap:0;margin:20px 0;border:1px solid rgba(23,201,244,.32);border-radius:16px;overflow:hidden;background:linear-gradient(135deg,#071e33,#04111e)}.bt-storage-link img{width:100%;height:100%;min-height:275px;object-fit:cover}.bt-storage-copy{padding:23px}.bt-storage-copy h2{font-family:Georgia,serif;font-size:clamp(2rem,3vw,3rem);line-height:1;margin:6px 0 10px}.bt-storage-copy p{color:var(--bt-muted);line-height:1.5}.bt-path-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.bt-link-card{padding:14px}.bt-link-card h4{margin:0 0 7px;color:#fff}.bt-link-card p{margin:0;color:var(--bt-muted);line-height:1.4}.bt-footer-note{margin-top:22px;padding:15px;border:1px solid rgba(23,201,244,.2);border-radius:12px;text-align:center;color:#93b8cb;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase}
@media(max-width:1180px){.bt-grid5{grid-template-columns:repeat(3,1fr)}.bt-band-grid{grid-template-columns:1fr}.bt-next-grid{grid-template-columns:1fr}.bt-tech-grid{grid-template-columns:repeat(4,1fr)}.bt-detail-grid,.bt-path-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.bt-hero{min-height:520px}.bt-hero-copy{width:auto;padding:28px 22px}.bt-hero:after{background:rgba(1,10,20,.78)}.bt-grid5{grid-template-columns:1fr 1fr}.bt-tech-grid{grid-template-columns:1fr 1fr}.bt-storage-link{grid-template-columns:1fr}.bt-storage-link img{min-height:220px}}
@media(max-width:620px){.bt-grid5,.bt-tech-grid,.bt-detail-grid,.bt-path-grid{grid-template-columns:1fr}.bt-hero h1{font-size:3.25rem}}