@font-face{font-family:'Barlow Condensed';font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/barlow-condensed-700-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Barlow Condensed';font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/barlow-condensed-800-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/inter-400-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/inter-700-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
:root{--navy:#0f1b2d;--char:#1c2431;--ink:#14202e;--muted:#5a6472;--red:#c8102e;--cta:#f7b500;--link:#0d4e93;--line:#dfe4ea;--soft:#f5f7fa;--white:#fff;--light:#f4f6f8;--lmuted:#b8c2cf;--yes:#1e7d3c;--display:"Barlow Condensed","Arial Narrow",Arial,sans-serif;--body:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--body);font-size:17px;line-height:1.6;color:var(--ink);background:var(--white)}
img{max-width:100%;height:auto;display:block}
a{color:var(--link)}a:hover{color:var(--red)}
h1,h2,h3,h4{font-family:var(--display);line-height:1.1;margin:0 0 .5em;color:var(--ink);letter-spacing:.2px}
h1{font-size:clamp(34px,6vw,54px);font-weight:800}h2{font-size:clamp(28px,4.5vw,40px);font-weight:800;margin-top:1.4em}h3{font-size:24px;font-weight:700;margin-top:1.2em}h4{font-size:18px}
p{margin:0 0 1em}small,.small{font-size:14.5px;color:var(--muted)}.small.light{color:var(--lmuted)}.center{text-align:center}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}.narrow{max-width:720px}.narrow ul li{margin:10px 0}.narrow ul a{display:inline-block;padding:6px 0}
.skip{position:absolute;left:-999px;top:0;background:var(--cta);color:var(--ink);padding:8px 12px;z-index:99}.skip:focus{left:8px}
/* header */
.top{background:var(--navy);color:var(--light);position:sticky;top:0;z-index:20;box-shadow:0 2px 8px rgba(0,0,0,.25)}
.bar{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-family:var(--display);font-weight:800;font-size:26px;line-height:1}.brand small{display:block;font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--lmuted);font-family:var(--body);font-weight:700}
.mark{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:8px;background:var(--red);color:#fff;font-family:var(--display);font-weight:800;font-size:26px}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}.nav a{color:var(--light);text-decoration:none;padding:10px 12px;border-radius:6px;font-weight:700;font-size:16px;display:block}.nav a:hover,.nav a[aria-current]{background:rgba(255,255,255,.12);color:#fff}
.nav{display:flex;align-items:center;gap:10px}
.navtoggle{display:none;background:none;border:2px solid var(--lmuted);border-radius:8px;width:44px;height:44px;padding:8px;cursor:pointer}.navtoggle span{display:block;height:3px;background:#fff;margin:5px 0;border-radius:2px}
.btn-ghost{display:inline-block;border:2px solid #fff;color:#fff;text-decoration:none;font-weight:700;padding:9px 16px;border-radius:8px;font-size:16px;line-height:1.2;margin:4px 6px 4px 0}.btn-ghost:hover{background:#fff;color:var(--navy)}
.btn-ghost.dark{border-color:var(--ink);color:var(--ink)}.btn-ghost.dark:hover{background:var(--ink);color:#fff}
/* the ONE cta colour: Buy buttons only */
.btn-buy{display:inline-flex;align-items:center;gap:10px;background:var(--cta);color:var(--ink);text-decoration:none;font-weight:700;padding:12px 18px;border-radius:8px;border:2px solid var(--ink);box-shadow:0 3px 0 var(--ink);font-size:16px;line-height:1.2}.btn-buy:hover{filter:brightness(1.06);color:var(--ink);transform:translateY(1px);box-shadow:0 2px 0 var(--ink)}
.btn-buy .price{background:var(--ink);color:#fff;padding:3px 9px;border-radius:6px;font-family:var(--display);font-size:18px}
.btn-big{font-size:20px;padding:16px 26px}.btn-big .price{font-size:22px}
/* hero */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--char) 60%,#3a1a2b 100%);color:var(--light);padding:44px 0 40px}
.herogrid{display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:center}
.hero h1{color:#fff;margin:.2em 0 .4em}.eyebrow{color:var(--cta);font-weight:700;letter-spacing:.5px;text-transform:uppercase;font-size:14px;margin:0}.eyebrow.dark{color:var(--red)}
.lead{font-size:19px;color:var(--light)}.lead2{font-size:19px}
.hero a{color:#fff}.heroimg img{border-radius:12px;box-shadow:0 20px 50px rgba(0,0,0,.45)}
.finder{margin:18px 0 12px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.flabel{font-weight:700;margin-right:4px;width:100%;color:#fff}
.chip{display:inline-block;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.35);color:#fff;text-decoration:none;padding:8px 14px;border-radius:999px;font-weight:700;font-size:15px}.chip:hover{background:#fff;color:var(--navy)}
/* content */
.highlights{list-style:none;padding:0;margin:28px 0 8px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px 18px}.highlights li{position:relative;padding-left:30px;font-weight:700}.highlights li::before{content:"\2713";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:var(--yes);color:#fff;font-size:14px;line-height:22px;text-align:center}
.disc{font-size:14px;color:var(--muted);border:1px dashed var(--line);border-radius:8px;padding:10px 14px;margin:14px 0 24px;text-align:center}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}.step{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:20px}.step h3{margin-top:0;color:var(--red)}
.band{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:30px 0 40px;margin-top:40px}.band h2{margin-top:.2em}
.sub{margin-top:1.6em}
.proofrow{display:grid;grid-template-columns:minmax(220px,1fr) 1.4fr;gap:24px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;margin:14px 0 22px}
.prooftext h3{margin-top:0}.prooftext p{margin:0 0 .7em}
.doc{margin:0;text-align:center}.doc img{margin:0 auto;border:1px solid var(--line);border-radius:6px;box-shadow:0 2px 10px rgba(0,0,0,.08)}.doc figcaption{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.5}
.video{margin:0 0 22px}.ratio{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;background:var(--navy);border-radius:10px}.ratio iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video figcaption{font-size:15px;color:var(--muted);margin-top:8px;line-height:1.5}
.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:12px 0}.tile{background:#fff;border:1px solid var(--line);border-top:5px solid var(--red);border-radius:8px;padding:14px}.num{font-family:var(--display);font-size:34px;font-weight:800;line-height:1}.what{font-weight:700;font-size:15.5px;line-height:1.4;margin:6px 0}.src{font-size:13px;color:var(--muted);line-height:1.45}
.fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}.fgroup{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff}.fgroup h3{margin-top:0;color:var(--red)}
.flist{list-style:none;padding:0;margin:0}.flist li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:8px 0;border-top:1px solid var(--line);font-weight:700}.flist small{display:block;color:var(--muted);font-weight:400}
details{border:1px solid var(--line);border-radius:10px;background:#fff;margin:0 0 10px}summary{cursor:pointer;font-weight:700;padding:14px 18px;list-style:none;font-size:17px}summary::-webkit-details-marker{display:none}summary::before{content:"\25B8";color:var(--red);margin-right:8px}details[open] summary::before{content:"\25BE"}.d-body{padding:2px 18px 16px}
.buytable table{width:100%;border-collapse:collapse;background:#fff;border:2px solid var(--ink);border-radius:10px;overflow:hidden}.buytable td{padding:10px;border-bottom:1px solid var(--line);vertical-align:middle}.buytable td:last-child{text-align:right;white-space:nowrap}.buytable tr:nth-child(even) td{background:var(--soft)}
/* products */
.card{display:grid;grid-template-columns:minmax(120px,200px) 1fr;gap:20px;border:1px solid var(--line);border-radius:12px;padding:20px;margin:0 0 16px;background:#fff}.cimg img{margin:0 auto;border-radius:6px}.card h3{margin:0}.item{font-size:14px;color:var(--muted);margin:2px 0 8px}
.checks{list-style:none;padding:0;margin:0 0 14px}.checks li{position:relative;padding-left:32px;margin:0 0 8px;line-height:1.5}.checks li::before{content:"\2713";position:absolute;left:0;top:2px;width:22px;height:22px;border-radius:50%;background:var(--yes);color:#fff;font-size:14px;line-height:22px;text-align:center}
.cbuy{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:8px 0}.more{font-weight:700}
.tablewrap{overflow-x:auto}.cmp{width:100%;border-collapse:collapse;font-size:15px;background:#fff}.cmp th{background:var(--navy);color:#fff;text-align:left;padding:10px}.cmp td{padding:9px 10px;border-bottom:1px solid var(--line)}.cmp td:first-child{font-weight:700}.cmp .yes{color:var(--yes);font-weight:700}
.igrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}.icard{border:1px solid var(--line);border-radius:10px;padding:14px;text-align:center;background:#fff}.icard h3{font-size:20px;margin:10px 0 4px}.icard img{margin:0 auto}
.crumb{font-size:14px;color:var(--muted);margin:14px 0 6px}
.phero{display:grid;grid-template-columns:minmax(140px,220px) 1fr;gap:26px;align-items:start;margin:8px 0 18px}.pimg img{margin:0 auto;border-radius:8px}
.pricebig{font-family:var(--display);font-size:42px;font-weight:800;line-height:1;margin:6px 0 14px}.pricebig small{font-family:var(--body);font-size:14px;font-weight:700;color:var(--muted)}
.img2{max-width:300px;margin:0 auto 18px}
.docs{background:#fff8d6;border:1px solid var(--cta);border-radius:10px;padding:16px 20px;margin:18px 0}.docs h3{margin-top:0;font-size:20px}.docs ul{margin:0;padding-left:20px}.docs li{margin:4px 0}
.reported{margin:0 0 14px;background:#fff;border:1px solid var(--line);border-left:5px solid var(--red);border-radius:6px;padding:14px 18px}.reported p{font-style:italic;margin:0 0 8px}.reported footer{font-weight:700;font-size:15px}.reported small{font-weight:400;color:var(--muted)}
.tests{padding-left:20px}.tests li{padding:6px 0;border-bottom:1px solid var(--line)}
.refs{list-style:none;padding:0;margin:0}.refs li{padding:9px 0;border-bottom:1px solid var(--line);font-size:15.5px}.rl{white-space:nowrap;margin-left:8px}
.portrait{text-align:center}.portrait img{margin:0 auto 10px;border-radius:8px}
/* footer */
.foot{background:var(--navy);color:var(--lmuted);padding:36px 0 24px;margin-top:50px;font-size:15px}.foot a{color:#fff}.foot .fh{color:#fff;margin:0 0 8px;font-family:var(--display);font-size:18px;font-weight:700}.foot ul{list-style:none;padding:0;margin:0}.foot li{margin:4px 0}
.fcols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}.fbrand{font-family:var(--display);font-size:24px;font-weight:800;color:#fff;display:flex;align-items:center;gap:10px;margin-bottom:8px}
.foot .disc{color:var(--lmuted);border-color:#33405a}.copy{font-size:13px;margin-top:12px}
@media (max-width:820px){.herogrid,.proofrow,.card,.phero{grid-template-columns:1fr}.fcols{grid-template-columns:1fr}.heroimg{order:-1}
.navtoggle{display:block}.nav{display:none;position:absolute;left:0;right:0;top:64px;background:var(--navy);padding:10px 20px 16px;flex-direction:column;align-items:stretch;border-top:1px solid #33405a}.nav.open{display:flex}.nav ul{flex-direction:column}.nav a{padding:12px}.btn-ghost{text-align:center}}
@media (max-width:480px){body{font-size:16px}.wrap{padding:0 16px}.btn-buy{width:100%;justify-content:center}.cbuy{flex-direction:column;align-items:stretch}.flist li{flex-direction:column;align-items:stretch}.buytable td:last-child{white-space:normal}.rl{white-space:normal;display:block;margin:4px 0 0}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Energy Times signup */
.et-inline{background:var(--char);color:var(--light);padding:40px 0;margin-top:50px;border-top:4px solid var(--red)}.et-inline h2{color:#fff;margin:.1em 0 .4em}.et-inline p{color:var(--light)}.etgrid{display:grid;grid-template-columns:1.2fr 1fr;gap:30px;align-items:center}
.etform{display:grid;gap:8px}.etform label{font-weight:700;font-size:14px}.etform input{font:inherit;padding:12px 14px;border:2px solid var(--line);border-radius:8px;width:100%;color:var(--ink);background:#fff}.etform input:focus{outline:3px solid var(--cta);outline-offset:1px}
.btn-signup{margin-top:6px;font:700 17px/1.2 var(--body);background:var(--red);color:#fff;border:2px solid #7d0a1d;border-radius:8px;padding:13px 20px;cursor:pointer;box-shadow:0 3px 0 #7d0a1d}.btn-signup:hover{background:#a80d27}
.et-compact{display:grid;grid-template-columns:1.1fr 1fr;gap:24px;align-items:center;background:#fff;border:2px solid var(--red);border-radius:12px;padding:22px 24px;margin:26px 0 8px}.et-compact h3{margin:0 0 6px;color:var(--red)}.et-compact p{margin:0;font-size:15.5px}
/* popup: desktop modal, mobile bottom bar */
.etpop{position:fixed;inset:0;z-index:50}.etpop[hidden]{display:none}.etpop-back{position:absolute;inset:0;background:rgba(15,27,45,.72)}
.etpop-box{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(520px,92vw);background:#fff;border-radius:14px;padding:26px 26px 20px;box-shadow:0 30px 80px rgba(0,0,0,.5);max-height:92vh;overflow:auto}.etpop-box h2{margin:.1em 0 .4em;font-size:30px}.etpop-p{font-size:15.5px}
.etpop-x{position:absolute;right:10px;top:8px;background:none;border:0;font-size:32px;line-height:1;cursor:pointer;color:var(--muted);width:44px;height:44px}.etpop-x:hover{color:var(--red)}
.etpop-no{margin-top:8px;background:none;border:0;color:var(--muted);text-decoration:underline;cursor:pointer;font:inherit;font-size:14px;padding:8px 0}
.etpop-box:focus{outline:none}body.etpop-open{overflow:hidden}
@media (max-width:820px){.etgrid,.et-compact{grid-template-columns:1fr}
.etpop{top:auto;bottom:0}.etpop-back{display:none}body.etpop-open{overflow:auto}
.etpop-box{position:relative;left:0;top:0;transform:none;width:100%;max-width:none;border-radius:14px 14px 0 0;padding:18px 18px 14px;max-height:60vh;box-shadow:0 -10px 40px rgba(0,0,0,.35);border-top:4px solid var(--red)}.etpop-box h2{font-size:22px}.etpop-p{display:none}.etpop-no{display:none}
.etpop .etform{grid-template-columns:1fr 1fr;gap:8px}.etpop .etform label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.etpop .etform .btn-signup{grid-column:1/-1;margin-top:0}}
/* on-page jump nav + independent research box */
.jump{display:flex;flex-wrap:wrap;gap:6px 8px;margin:6px 0 18px}.jump a{font-size:14.5px;font-weight:700;text-decoration:none;color:var(--ink);background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:6px 12px}.jump a:hover{border-color:var(--red);color:var(--red)}
.research-divider{border:0;border-top:4px solid var(--line);margin:48px 0 0}
.research{background:#eef0f3;border:1px solid var(--line);border-radius:12px;padding:22px 24px 10px;margin:22px 0 0}.research h2{margin-top:.2em;font-size:clamp(24px,4vw,32px)}.research-intro{font-size:15.5px}
.studies{padding-left:22px}.studies li{margin:0 0 16px;font-size:15px;line-height:1.55}.studies cite{font-style:normal}.studies .finding{margin:4px 0 6px}.studies .tag{display:inline-block;font-size:12.5px;color:#4b5563;background:#e2e5ea;border-radius:4px;padding:2px 8px}
.etnote{grid-column:1/-1;font-size:13px;color:var(--muted);margin:6px 0 0}.et-inline .etnote{color:var(--lmuted)}.et-inline .etnote a{color:#fff}.narrow h2{font-size:24px;margin-top:1.3em}