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/* LED flagship additions */
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.hero-led{background:radial-gradient(circle at 85% 18%,rgba(255,211,91,.24),transparent 28%),linear-gradient(135deg,#edf9f4 0%,#fff6df 52%,#eef6fa 100%)}
.hero-copy h1 em{color:#a45a12;font-style:normal}.hero-card-led{background:radial-gradient(circle at 85% 0%,rgba(255,205,91,.22),transparent 34%),linear-gradient(145deg,#173f54,#0b2536 72%)}
.led-bulbs{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin:17px 0;padding:16px;border:1px solid rgba(255,255,255,.1);border-radius:17px;background:rgba(255,255,255,.055)}
.led-bulb{display:grid;place-items:center;min-height:90px;border-radius:14px;background:rgba(255,255,255,.07);text-align:center}.led-bulb i{display:block;width:34px;height:42px;border-radius:50% 50% 45% 45%;background:#ffd76d;box-shadow:0 0 25px rgba(255,215,109,.45)}.led-bulb.old i{background:#ffb35c}.led-bulb b{margin-top:8px}.led-arrow{color:#9adfc4;font-weight:900}.hero-bars em{white-space:nowrap}.lumen-note{margin-top:14px;padding:14px 15px;border-left:3px solid var(--amber);border-radius:0 12px 12px 0;background:#fff8e8;color:#5e513d;font-size:.72rem;line-height:1.5}.comparison-table{width:100%;border-collapse:collapse;margin-top:14px}.comparison-table th,.comparison-table td{padding:11px;border-bottom:1px solid var(--line);text-align:left;font-size:.74rem}.comparison-table th{color:#526b77}.comparison-table td:last-child,.comparison-table th:last-child{text-align:right}.payback-track{margin-top:14px;padding:14px;border-radius:14px;background:#f3f7f6}.payback-track span{display:flex;justify-content:space-between;gap:12px;color:#526c77;font-size:.67rem}.payback-track i{display:block;height:9px;margin-top:8px;border-radius:999px;background:#dfe9e6;overflow:hidden}.payback-track b{display:block;height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,var(--green),#6ab9aa);transition:width .2s ease}.source-box a{display:inline;color:#d9fff0}.section-head>span{display:block;margin-bottom:8px;color:var(--green2);font-size:.7rem;font-weight:900;letter-spacing:.11em;text-transform:uppercase}.section-head h2{margin:0;color:var(--ink);font-size:clamp(1.9rem,3.4vw,3rem);line-height:1.05;letter-spacing:-.045em}.section-head p{margin:11px 0 0;color:#5a707b;font-size:.96rem;line-height:1.68}.formula-box{margin-top:14px;padding:16px;border-radius:14px;background:#eef6f4;color:#173743}.formula-box code{white-space:normal;font-size:.78rem}.warning-card{border-color:#ead7b9!important;background:#fff9ef!important}.warning-card>span{background:#fff0d5!important;color:#8d5816!important}.verification code{white-space:normal}.related-grid p{margin:7px 0 0}.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}.mode-btn{cursor:pointer}.preset-row{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}.preset-chip{min-height:38px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#425d69;font-size:.68rem;font-weight:850}.preset-chip:hover,.preset-chip.is-active{border-color:#81b9af;background:#eef8f4;color:var(--green2)}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}.led-bulbs{max-width:500px}}
@media(max-width:560px){.led-bulbs{display:none}.footer-grid{grid-template-columns:1fr}.comparison-table{display:block;overflow-x:auto}.preset-row{display:grid;grid-template-columns:1fr 1fr}.preset-chip{padding:0 7px}}


/* Q2 boundary-section redesign */
.led-boundary{position:relative;overflow:hidden;background:linear-gradient(180deg,#f3faf7 0%,#f8fbfa 100%)}
.led-boundary:before{content:"";position:absolute;right:-170px;top:-210px;width:420px;height:420px;border-radius:50%;background:rgba(15,118,110,.06);pointer-events:none}
.led-boundary .container{position:relative}
.boundary-head{max-width:900px;margin-bottom:30px}
.boundary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.boundary-grid article{position:relative;min-width:0;padding:23px 24px 24px;border:1px solid #d5e4e1;border-radius:20px;background:rgba(255,255,255,.92);box-shadow:0 14px 34px rgba(16,45,59,.055)}
.boundary-grid article>span{display:inline-grid;min-width:38px;height:29px;padding:0 10px;place-items:center;margin-bottom:15px;border-radius:999px;background:#e6f5f0;color:#0b5f59;font-size:.69rem;font-weight:950;letter-spacing:.06em}
.boundary-grid h3{margin:0 0 9px;color:#102d3b;font-size:1.05rem;line-height:1.28;letter-spacing:-.02em}
.boundary-grid p{margin:0;color:#566d78;font-size:.81rem;line-height:1.68}
.boundary-callout{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:28px;align-items:center;margin-top:18px;padding:24px 26px;border-radius:20px;background:linear-gradient(135deg,#12384b,#0b2637);color:#fff;box-shadow:0 18px 42px rgba(16,45,59,.13)}
.boundary-callout span{display:block;margin-bottom:7px;color:#95e5c8;font-size:.69rem;font-weight:950;letter-spacing:.1em;text-transform:uppercase}
.boundary-callout strong{display:block;font-size:clamp(1.08rem,1.8vw,1.35rem);line-height:1.35;letter-spacing:-.025em}
.boundary-callout p{margin:0;color:#c8d9df;font-size:.8rem;line-height:1.65}
@media(max-width:720px){.boundary-grid{grid-template-columns:1fr}.boundary-callout{grid-template-columns:1fr;gap:12px;padding:21px}.boundary-head{margin-bottom:24px}}