:root{
  --bg:#f6f7fb; --card:#fff; --ink:#14181f; --muted:#5b6472; --line:#e3e6ee;
  --brand:#0B2557;--green:#4CC35A; --brand-ink:#fff; --accent:#4CC35A; --warn-bg:#fff6e0; --warn-line:#f1d089;
  --radius:14px; --shadow:0 1px 2px rgba(20,24,31,.06),0 6px 18px rgba(20,24,31,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:9}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;letter-spacing:-.02em;color:var(--ink);text-decoration:none}
.logo img{border-radius:8px;display:block}.logo span{color:var(--brand)}
nav.main{display:flex;gap:6px;flex-wrap:wrap}
nav.main a{padding:6px 12px;border-radius:999px;text-decoration:none;color:var(--ink);font-size:.92rem;font-weight:500}
nav.main a:hover,nav.main a[aria-current]{background:#e8f7ea;color:var(--brand)}
.hero{background:linear-gradient(135deg,#0B2557,#12337a);color:#fff;padding:44px 0 40px}
.hero h1{margin:0 0 8px;font-size:clamp(1.9rem,5vw,2.8rem);letter-spacing:-.03em;line-height:1.1}
.hero p{margin:0;max-width:640px;opacity:.92;font-size:1.08rem}
.hero .meta{margin-top:16px;display:inline-block;border-left:4px solid var(--green);background:rgba(255,255,255,.12);padding:6px 12px;border-radius:999px;font-size:.88rem}
.notice{background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:10px;padding:12px 14px;font-size:.9rem;color:#4a3a0b;margin:0 0 20px}
.notice strong{color:#3a2c05}
.disclosure{margin:20px 0 0}
section.cat{padding:36px 0 8px}
section.cat h2{margin:0 0 6px;font-size:1.6rem;letter-spacing:-.02em}
section.cat .intro{margin:0 0 16px;color:var(--muted);max-width:760px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;display:flex;flex-direction:column;gap:10px;position:relative}
.card .rank{position:absolute;top:-10px;left:14px;background:var(--accent);color:#08210f;font-weight:800;border-radius:999px;min-width:30px;height:30px;display:grid;place-items:center;font-size:.9rem;padding:0 8px;box-shadow:var(--shadow)}
.card .provider{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;margin-top:8px}
.card h3{margin:0;font-size:1.05rem;line-height:1.3}
.card .headline{font-size:1.35rem;font-weight:800;color:var(--brand);line-height:1.25;letter-spacing:-.01em}
.card .detail{color:var(--muted);font-size:.92rem;margin-top:-4px}
.card ul{margin:0;padding-left:18px;font-size:.88rem;color:#2b3340}
.card li{margin:2px 0}
.facts{font-size:.85rem;background:#f3f5f9;border-radius:8px;padding:8px 10px;color:#2b3340}
.facts b{font-weight:700}
.end{font-size:.85rem}
.end b{font-weight:700}
.card .foot{margin-top:auto;display:flex;flex-direction:column;gap:8px;padding-top:6px}
.checked{font-size:.78rem;color:var(--muted)}
.checked a{color:var(--muted)}
.btn{display:inline-block;text-align:center;background:var(--brand);color:var(--brand-ink);padding:11px 16px;border-radius:10px;text-decoration:none;font-weight:700}
.btn:hover{background:#12337a}
.btn:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.tips .card .rank{background:var(--brand);color:#fff}
.tips .card p{margin:0;font-size:.92rem}
.tips .grid{grid-template-columns:repeat(auto-fill,minmax(340px,1fr))}
footer.site{margin-top:48px;background:#0f1720;color:#c9d1dc;padding:28px 0;font-size:.88rem}
footer.site a{color:#fff}
footer.site p{margin:0 0 10px;max-width:880px}
.page{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;margin:32px 0;box-shadow:var(--shadow)}
.page h1{margin-top:0;letter-spacing:-.02em}
.error{background:#fdecec;border:1px solid #f3b4b4;padding:14px;border-radius:10px;margin:24px 0}
@media (max-width:520px){.wrap{padding:0 14px}.grid,.tips .grid{grid-template-columns:1fr}.hero{padding:30px 0}}

html{scroll-padding-top:110px}
header.site .wrap{row-gap:6px}
.logo{order:1}.site-links{order:2;margin-left:auto}
nav.cat-nav{order:3;flex:1 1 100%;flex-wrap:nowrap;overflow-x:auto;gap:4px;padding-bottom:4px;scrollbar-width:thin}
nav.cat-nav a{white-space:nowrap;border:1px solid var(--line);background:#fff}
nav.cat-nav a.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.toc{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:22px 0 4px}
.toc-group{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.toc-group h2{margin:0 0 6px;font-size:.78rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.toc-group a{display:block;padding:3px 0;font-size:.93rem;text-decoration:none;font-weight:600}
.toc-group a:hover{text-decoration:underline}
.cat-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}
.totop{font-size:.85rem;color:var(--muted);text-decoration:none;white-space:nowrap}
.totop:hover{text-decoration:underline}
.noaff{font-size:.85rem;color:var(--muted);margin:-8px 0 16px}
.facts{display:grid;gap:3px}
@media (max-width:520px){header.site .wrap{padding-top:8px;padding-bottom:8px}.toc{grid-template-columns:1fr 1fr}}

/* seasonal, help, guides, newsletter */
.season{display:inline-block;vertical-align:middle;background:#c8102e;color:#fff;font-size:.62rem;text-transform:uppercase;letter-spacing:.08em;font-weight:800;padding:3px 8px;border-radius:999px;margin-right:6px;position:relative;top:-2px}
section.cat:has(.season){background:linear-gradient(180deg,#fff4f4,rgba(255,244,244,0));border-top:3px solid #c8102e}
.help{margin-top:32px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.help h3{margin:0 0 6px;font-size:1.3rem}
.helplist{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.helplist li{border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:4px;background:#fbfcfe}
.helplist .hname{font-weight:700}
.helplist .hhead{font-weight:700;color:var(--brand);font-size:.98rem}
.helplist .hnotes{font-size:.86rem;color:#2b3340}
.helplist .hsrc{font-size:.76rem;color:var(--muted);margin-top:auto}
.guides-box{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin:20px 0 6px;align-items:stretch}
.guides-box h2{grid-column:1/-1;margin:0;font-size:1.05rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.guides-box a{background:#fff;border:1px solid var(--line);border-left:4px solid var(--green);border-radius:12px;padding:14px 16px;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;gap:2px}
.guides-box a span{font-size:.88rem;color:var(--muted)}
.guides-box a:hover{box-shadow:var(--shadow)}
.newsletter{margin:18px 0 0;background:var(--brand);color:#fff;border-radius:var(--radius);padding:22px}
.newsletter h2{margin:0 0 4px;font-size:1.35rem}
.newsletter p{margin:0 0 12px}
.newsletter form{display:grid;gap:10px;grid-template-columns:1fr 1.4fr auto;align-items:end}
.newsletter label{display:flex;flex-direction:column;gap:4px;font-size:.85rem;font-weight:600}
.newsletter input{font:inherit;padding:10px 12px;border-radius:8px;border:0;color:var(--ink)}
.newsletter .btn{background:var(--green);color:#08210f;border:0;cursor:pointer;font:inherit;font-weight:800;padding:10px 20px;border-radius:8px}
.newsletter .fine,.newsletter .nl-msg{font-size:.8rem;opacity:.9;margin:10px 0 0}
.newsletter .nl-msg{font-weight:700;min-height:1em}
.newsletter a{color:#bff0c5}
@media (max-width:700px){.newsletter form{grid-template-columns:1fr}}
.guide .crumb{font-size:.85rem;color:var(--muted);margin:0 0 6px}
.guide .meta-line{color:var(--muted);margin-top:0}
.guide h2{margin-top:34px;scroll-margin-top:110px}
.guide h3{margin:18px 0 4px;font-size:1.05rem}
.guide-toc{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0 6px}
.guide-toc a{border:1px solid var(--line);background:#fff;border-radius:999px;padding:4px 12px;font-size:.88rem;text-decoration:none;color:var(--brand);font-weight:600}
.guide table.calc{width:100%;border-collapse:collapse;margin:12px 0;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;font-size:.92rem}
.guide table.calc caption{text-align:left;font-weight:700;padding:6px 0}
.guide table.calc th,.guide table.calc td{border-top:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.guide table.calc th{background:#f3f5f9;width:26%}
.proscons{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.proscons>div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px 16px 12px}
.slot{border:2px dashed var(--green);background:#f1fbf2;border-radius:12px;padding:14px 18px;margin:12px 0}
.slot-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:#1f7a2b;margin:0}
.slot-link em{background:#fff3b0;padding:2px 6px;border-radius:4px;font-style:normal}
.slot-disclosure{font-size:.88rem;background:#fff;border-radius:8px;padding:8px 10px;margin-bottom:0}
.sources{font-size:.85rem;color:#2b3340;padding-left:20px}
.sources li{margin:4px 0;word-break:break-word}
.fine{font-size:.82rem;color:var(--muted)}
@media (max-width:520px){.guide table.calc th{width:34%}.helplist{grid-template-columns:1fr}}

/* Home energy guides: featured block */
.featured-guides{background:linear-gradient(180deg,#eaf7ec,#f4faf5);border-bottom:1px solid var(--line);padding:26px 0 22px}
.featured-guides .eyebrow{margin:0;font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.09em;color:#2f8f3d}
.featured-guides h2{margin:2px 0 6px;font-size:1.7rem;color:var(--navy,#0b2559)}
.featured-guides .lead{margin:0 0 16px;max-width:60ch;color:var(--muted)}
.feat-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.feat-card{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);border-top:5px solid var(--green);border-radius:14px;padding:18px 20px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow)}
.feat-card strong{font-size:1.2rem;line-height:1.25}
.feat-card .tagline{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:#2f8f3d}
.feat-card span:not(.tagline):not(.go){color:var(--muted);font-size:.95rem}
.feat-card .go{margin-top:auto;font-weight:700;color:#0b2559;padding-top:6px}
.feat-card:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(11,37,89,.14)}
.more-guides{margin:14px 0 0;font-size:.92rem}
nav.main a.featlink{background:#e3f4e6;border-radius:999px;padding:5px 12px;font-weight:700;color:#14612a}
.guide-strip{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0 0 14px;font-size:.88rem}
.guide-strip b{text-transform:uppercase;letter-spacing:.07em;font-size:.75rem;color:var(--muted)}
.guide-strip a{border:1px solid var(--line);border-radius:999px;padding:4px 12px;text-decoration:none;background:#fff}
.guide-strip a[aria-current=page]{background:#e3f4e6;border-color:#2f8f3d;font-weight:700}
.cite{font-size:.7em;color:var(--muted);white-space:nowrap}
.tablewrap{overflow-x:auto;margin:10px 0}
table.cars th,table.cars td{vertical-align:top;font-size:.92rem}
table.cars thead th{background:#eef1f7}

/* ---------- Deal of the day ---------- */
.dotd{background:linear-gradient(135deg,#0B2557,#123a82 60%,#1b5a4a);padding:0 0 26px;color:#fff}
.dotd[hidden]{display:none}
.dotd-card{background:#fff;color:var(--ink);border-radius:18px;padding:18px 20px 20px;margin-top:-4px;box-shadow:0 10px 30px rgba(0,0,0,.28);border-top:6px solid var(--green)}
.dotd-top{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.dotd-badge{background:#c8102e;color:#fff;font-weight:800;text-transform:uppercase;letter-spacing:.08em;font-size:.8rem;padding:6px 12px;border-radius:999px}
.dotd-date{font-size:.9rem;color:var(--muted)}
.dotd-main{display:grid;grid-template-columns:1fr minmax(220px,260px);grid-template-areas:'head cta' 'detail cta';gap:6px 22px;align-items:start}
.dotd-head{grid-area:head}.dotd-detail{grid-area:detail}.dotd-cta{grid-area:cta;align-self:center}
.dotd .provider{font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700}
.dotd h2{margin:2px 0 8px;font-size:clamp(1.3rem,3.2vw,1.9rem);line-height:1.2;letter-spacing:-.02em}
.dotd-price{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.dotd-price .now{font-size:clamp(2.2rem,7vw,3rem);font-weight:900;color:var(--brand);letter-spacing:-.03em;line-height:1}
.dotd-price .was{font-size:1.15rem;color:var(--muted);text-decoration:line-through}
.dotd-price .save{background:#e3f4e6;color:#14612a;font-weight:800;border-radius:8px;padding:4px 10px;font-size:.95rem}
.dotd-why{margin:10px 0 6px;font-size:1rem}
.dotd-facts{margin:6px 0;padding-left:18px;font-size:.95rem}
.dotd-note{margin:6px 0 0;font-size:.85rem;color:var(--muted)}
.dotd-cta{display:flex;flex-direction:column;gap:10px}
.btn-lg{font-size:1.15rem;padding:15px 20px;min-height:54px;display:flex;align-items:center;justify-content:center}
.dotd-hist{margin-top:14px;border-top:1px solid var(--line);padding-top:8px;font-size:.92rem}
.dotd-hist summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:700}
.dotd-hist ul{margin:0 0 6px;padding-left:18px}
.dotd-hist .hp{font-weight:700;color:var(--brand)}
/* price-history badge */
.pricenote{font-size:.84rem;border-radius:8px;padding:6px 9px;line-height:1.35}
.pricenote.good{background:#e3f4e6;color:#14612a}
.pricenote.neutral{background:#eef1f7;color:#2b3340}
.pricenote a{color:inherit;font-weight:700}
/* reader requests box + honeypot */
.requests{margin:16px 0 0;background:#fff;border:1px solid var(--line);border-left:6px solid var(--green);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.requests h2{margin:0 0 4px;font-size:1.3rem}
.requests p{margin:0 0 12px}
.requests form{display:grid;gap:10px;grid-template-columns:1.6fr 1fr auto;align-items:end}
.requests label{display:flex;flex-direction:column;gap:4px;font-size:.88rem;font-weight:600}
.requests input{font:inherit;padding:10px 12px;border-radius:8px;border:1px solid #c5cbd8;color:var(--ink);min-height:46px}
.requests .btn{background:var(--brand);color:#fff;border:0;cursor:pointer;font:inherit;font-weight:800;padding:10px 20px;border-radius:8px;min-height:46px}
.requests .fine,.requests .nl-msg{margin:10px 0 0}
.requests .nl-msg{font-weight:700;min-height:1em;font-size:.88rem}
.hp-field{display:none!important}
.newsletter input,.newsletter .btn{min-height:46px}
@media (max-width:900px){.dotd-main{grid-template-columns:1fr;grid-template-areas:'head' 'cta' 'detail';gap:12px}}
@media (max-width:700px){.requests form{grid-template-columns:1fr}}

/* ---------- Mobile-first polish (tested at 375px and 390px) ---------- */
@media (max-width:700px){
  body{font-size:17px}
  .wrap{padding:0 16px}
  /* header: logo row and site links scroll away; the section pills stay pinned */
  header.site .wrap{padding-top:6px;padding-bottom:0;row-gap:4px}
  header.site:has(#cat-nav){top:-102px}
  header.site:not(:has(#cat-nav)){position:static}
  header.site:not(:has(#cat-nav)) .wrap{padding-bottom:8px}
  .logo{height:44px}
  nav.site-links{order:2;flex:1 1 100%;margin-left:0;flex-wrap:nowrap;overflow-x:auto;gap:6px;scrollbar-width:none;height:44px}
  nav.site-links::-webkit-scrollbar,nav.cat-nav::-webkit-scrollbar{display:none}
  nav.cat-nav{height:48px;padding-bottom:4px;gap:6px;scrollbar-width:none}
  nav.main a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;font-size:.95rem;white-space:nowrap;flex:0 0 auto}
  html{scroll-padding-top:60px}
  .hero{padding:24px 0 22px}
  .hero h1{font-size:1.75rem}
  .hero p{font-size:1rem}
  .toc{grid-template-columns:1fr}
  .toc-group a{padding:12px 0;min-height:44px;display:flex;align-items:center;font-size:1rem}
  .feat-card{padding:18px}
  .feat-card .go,.more-guides a{display:inline-flex;align-items:center;min-height:44px}
  .btn{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:1.05rem}
  .totop{display:inline-flex;align-items:center;min-height:44px;font-size:.95rem}
  .checked,.card .detail,.end,.facts,.hsrc,.hnotes,.fine,.noaff,.dotd-note{font-size:.9rem}
  .checked a,.hsrc a{display:inline-block;padding:13px 6px;margin:-13px -6px}
  .card ul{font-size:.95rem}
  .newsletter,.requests{padding:18px 16px}
  .newsletter input,.requests input,.newsletter .btn,.requests .btn{min-height:50px;font-size:1rem}
  footer.site a{display:inline-block;padding:12px 6px;margin:-12px -6px}
  .dotd{padding-bottom:20px}
  .dotd-card{padding:16px 14px 18px;border-radius:16px}
  .dotd-price .now{font-size:2.6rem}
  .dotd-cta .btn-lg{min-height:56px}
  .guide-toc a,.guide-strip a{display:inline-flex;align-items:center;min-height:44px}
  .page{padding:20px 16px}
}
.feat-card .tagline,.guide-strip b,.slot-label{font-size:.8rem}
.cite{font-size:.75em}
.cite{font-size:max(12px,.75em)}

@media (max-width:700px){
  .hero p[data-tagline]{display:none}
  .hero{padding:18px 0 16px}
  .hero h1{font-size:1.45rem}
  .hero .meta{margin-top:10px;font-size:.85rem;border-radius:12px}
  .dotd{padding-top:0}
  .dotd-card{margin-top:0}
  .dotd-why{font-size:.98rem}
}