@font-face{font-family:"DM Sans";src:url(../fonts/dm-sans-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"DM Sans";src:url(../fonts/dm-sans-latin-500-normal.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"DM Sans";src:url(../fonts/dm-sans-latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}

/* Home Penny Pro: deep teal, amber, pale mint; clean utility-meter feel */
:root{
  --bg:#f4f7f5; --surface:#ffffff; --tint:#e6f0ec;
  --ink:#122224; --ink-soft:#4d5f61;
  --accent:#0f5257; --accent-deep:#0a3a3e; --accent-soft:#dcebe8; --on-accent:#fff;
  --amber:#f5a524; --amber-soft:#fff1d6; --lime:#8bc34a; --lime-soft:#e8f4da;
  --link:#0d6b72; --ok:#3d7a2a; --ok-soft:#e8f4da; --bad:#b83227; --bad-soft:#fbe3df;
  --line:#d5e2de; --field:#9fb0ad;
  --head:"DM Sans",system-ui,sans-serif; --head-w:700; --head-track:-.025em;
  --sans:"DM Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --wrap:1180px; --r-sm:6px; --r-md:10px; --r-btn:6px;
}
.eyebrow{font-weight:700;font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--link);margin-bottom:.8em}
.tag{display:inline-block;font-weight:700;font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-deep);background:var(--amber);padding:.35em .8em;border-radius:4px;margin-bottom:14px}
.section-h{margin-bottom:24px}

.masthead{background:var(--surface);border-bottom:3px solid var(--accent)}
.brand-text{font:500 1.3rem var(--head);letter-spacing:-.02em;color:var(--accent)}
.brand-text b{font-weight:700;color:var(--amber);color:#d4860a}
.nav a{color:var(--ink);border-radius:6px}
.nav a:hover{background:var(--tint)}
.nav a[aria-current]{background:var(--accent);color:#fff}
.nav .nav-login{border:2px solid var(--accent);color:var(--accent);padding:.38em 1em}
.nav .nav-btn{background:var(--amber);color:var(--accent-deep);padding:.45em 1.05em;border:2px solid var(--amber)}
.nav .nav-btn:hover,.nav .nav-btn[aria-current]{background:#e09312;color:var(--accent-deep);border-color:#e09312}
.menu summary{color:var(--ink)}
.menu[open] .nav a[aria-current]{color:#fff}

.hero{padding:62px 0 74px;background:linear-gradient(180deg,var(--surface),var(--bg))}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px;align-items:center}
.hero h1{font-size:clamp(2.3rem,4.8vw,3.6rem);line-height:1.03;max-width:15ch}
.hero .lede{max-width:52ch}
.stack-card{background:var(--accent);color:#d6e7e4;border-radius:14px;padding:24px 24px 18px;box-shadow:0 28px 54px -30px rgba(10,58,62,.7)}
.sc-head{display:flex;justify-content:space-between;align-items:baseline;font-weight:700;font-size:1.2rem;color:#fff;margin:0 0 12px}
.sc-head span{font-weight:500;font-size:.86rem;color:var(--amber)}
.sc-list{list-style:none;margin:0;padding:0;counter-reset:sc}
.sc-list li{counter-increment:sc;display:grid;grid-template-columns:28px 1fr auto;gap:10px;align-items:center;padding:9px 0;border-top:1px solid rgba(255,255,255,.14)}
.sc-list li::before{content:counter(sc);width:24px;height:24px;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;font-size:.8rem;font-weight:700;display:flex;align-items:center;justify-content:center}
.sc-list a{color:#fff;text-decoration:none;font-weight:500}
.sc-list a:hover{text-decoration:underline}
.sc-tag{font-size:.74rem;font-weight:700;padding:.2em .6em;border-radius:4px;background:rgba(255,255,255,.14);color:#d6e7e4;white-space:nowrap}
.sc-tag.free{background:var(--lime);color:var(--accent-deep)}

.tools-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tool-tile{display:flex;flex-direction:column;gap:6px;padding:24px;border-radius:var(--r-md);background:var(--surface);border:1px solid var(--line);border-top:4px solid var(--amber);text-decoration:none;color:var(--ink)}
.tool-tile:hover{color:var(--ink);border-color:var(--accent)}
.tt-k{font-size:.76rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--link)}
.tool-tile strong{font-size:1.28rem}
.tool-tile span:last-child{color:var(--ink-soft)}
.section-tint{background:var(--tint)}
.guide-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.gcol h3{font-size:1.08rem;display:flex;align-items:center;gap:8px}
.gcol h3::before{content:"";width:12px;height:12px;border-radius:3px;background:var(--amber)}
.gcol.i-climate h3::before{background:#e76f51}.gcol.i-water h3::before{background:#3a86c8}.gcol.i-bills h3::before{background:var(--lime)}
.gcol ul{list-style:none;margin:0;padding:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md)}
.gcol li{padding:12px 14px;border-bottom:1px solid var(--line)}
.gcol li:last-child{border-bottom:0}
.gcol a{display:block;color:var(--ink);text-decoration:none;font-weight:700;line-height:1.3}
.gcol a:hover{color:var(--link);text-decoration:underline}
.gcol li span{font-size:.8rem;color:var(--ink-soft)}
.free-row{display:grid;grid-template-columns:300px 1fr;gap:64px;align-items:center}
.pdf-page.p1{border-top-color:var(--amber)}
.pdf-page.p2{background:var(--accent-soft)}.pdf-page.p3{background:var(--amber-soft)}
.product-band{background:var(--accent-deep);color:#c4dad7;padding:76px 0}
.product-band h2{color:#fff}
.product-band .lede{color:#c4dad7}
.product-band .price-line strong{color:var(--amber);font-size:1.6rem}
.product-teaser{display:grid;grid-template-columns:1.25fr 1fr;gap:56px;align-items:center}
.band-signup{background:var(--amber-soft)}

.page-head{background:var(--surface);border-bottom:1px solid var(--line)}
.hub-group{display:grid;grid-template-columns:260px 1fr;gap:40px;padding:34px 0;border-top:1px solid var(--line)}
.hub-group:first-child{border-top:0;padding-top:0}
.hub-label h2{display:flex;align-items:center;gap:10px}
.hub-label h2::before{content:"";flex:none;width:14px;height:14px;border-radius:3px;background:var(--amber)}
.hub-group.i-climate .hub-label h2::before{background:#e76f51}.hub-group.i-water .hub-label h2::before{background:#3a86c8}.hub-group.i-bills .hub-label h2::before{background:var(--lime)}
.hub-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:6px 32px}
.hub-list li{padding:.8em 0;border-bottom:1px solid var(--line)}
.hub-list a{font:700 1.12rem var(--head)}
.hub-list p{margin:.25em 0 0;color:var(--ink-soft);font-size:.96rem}
.hub-list .meta,.meta-line{font-size:.86rem;color:var(--ink-soft)}
.guide-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;padding-top:44px;padding-bottom:64px}
.guide-body{max-width:70ch}
.guide-body h2{margin-top:1.3em;font-size:1.48rem}
.guide-body li{margin-bottom:.4em}
.intro{font-size:1.18rem;line-height:1.6}
.tip-box{background:var(--amber-soft);border-left:6px solid var(--amber);border-radius:var(--r-sm);padding:20px 24px;margin:2em 0}
.tip-box h2{font-size:1.2rem;margin:0 0 .5em}
.tip-box ul{margin:0;padding-left:1.2em}
.guide-side{display:flex;flex-direction:column;gap:20px}
.side-kit{background:var(--accent-soft);border-color:#c3dbd6}

.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.calc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:28px;max-width:none}
.calc-row{display:grid;grid-template-columns:1fr 1fr;gap:4px 14px;align-items:start}
.calc-out{background:var(--accent);color:#c4dad7;border-radius:var(--r-md);padding:30px;position:sticky;top:20px}
.calc-k{font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:var(--amber);margin:0 0 6px}
.calc-big{font:700 clamp(2.4rem,4.4vw,3.3rem)/1.05 var(--head);color:#fff;margin-bottom:18px;font-variant-numeric:tabular-nums}
.calc-big small{font:500 1.05rem var(--sans);color:#a9c7c3}
.calc-nums{margin:0 0 14px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.calc-nums div{background:rgba(255,255,255,.1);border-radius:var(--r-sm);padding:12px}
.calc-nums dt{font-size:.86rem;color:#a9c7c3}
.calc-nums dd{margin:0;font-weight:700;font-size:1.28rem;color:#fff;font-variant-numeric:tabular-nums}
.calc-fine{margin:14px 0 0;padding-top:14px;border-top:1px solid rgba(255,255,255,.2);color:#a9c7c3}
.calc-fine a{color:#fff}

.decoder-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:48px;align-items:start}
.mock-bill{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;font-size:.95rem;box-shadow:0 20px 40px -30px rgba(18,34,36,.5);position:sticky;top:20px}
.mock-bill i{font-style:normal;display:inline-flex;width:22px;height:22px;border-radius:50%;background:var(--amber);color:var(--accent-deep);font-size:.76rem;font-weight:700;align-items:center;justify-content:center;margin-right:6px;flex:none}
.mb-top{display:flex;flex-direction:column;gap:4px;padding-bottom:12px;border-bottom:2px solid var(--accent)}
.mb-top b{font-size:1.2rem;color:var(--accent)}
.mb-row{padding:10px 0;border-bottom:1px solid var(--line)}
.mb-use{display:grid;grid-template-columns:1fr auto;gap:6px 14px;align-items:end;padding:12px 0;border-bottom:1px solid var(--line)}
.mb-use b{font-size:1.25rem}
.mb-graph{display:flex;align-items:flex-end;gap:4px;height:46px;grid-row:span 2}
.mb-graph u{display:block;width:12px;background:var(--accent-soft);border-radius:2px 2px 0 0}
.mb-graph u:last-child{background:var(--accent)}
.h50{height:50%}.h60{height:60%}.h70{height:70%}.h80{height:80%}.h90{height:90%}.h100{height:100%}
.mb-note{font-size:.86rem;color:var(--ink-soft)}
.mb-table{width:100%;border-collapse:collapse;margin-top:6px}
.mb-table td{padding:8px 0;border-bottom:1px solid var(--line)}
.mb-table td:last-child{text-align:right;font-variant-numeric:tabular-nums}
.mb-total td{font-weight:700;border-bottom:0;border-top:2px solid var(--ink)}
.mb-foot{font-size:.8rem;color:var(--ink-soft);margin:10px 0 0}
.decoder-list{list-style:none;margin:0;padding:0}
.decoder-list li{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.decoder-list li:first-child{padding-top:0}
.dn{flex:none;width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}
.decoder-list h2{font-size:1.15rem;margin:0 0 4px}
.decoder-list p{margin:0;color:var(--ink-soft)}

.club-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
.club-hero .actions+.small{margin-top:14px}
.review-mock{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:0 26px 50px -30px rgba(10,58,62,.6)}
.rm-head{margin:0;padding:16px 20px;background:var(--accent);color:#fff;font-weight:700;font-size:1.15rem;display:flex;flex-direction:column}
.rm-head span{font-weight:500;font-size:.88rem;color:var(--amber)}
.rm-list{margin:0;padding:8px 20px 14px 40px}
.rm-list li{padding:10px 0;border-bottom:1px solid var(--line)}
.rm-list li:last-child{border-bottom:0}
.rm-list b{display:block}
.rm-list span{font-size:.9rem;color:var(--ink-soft)}
.steps-row li{border-top-color:var(--amber)}
.club-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:56px}

.footer{background:var(--accent-deep);color:#a9c7c3}
.footer a{color:#fff}
.footer-brand{font:700 1.4rem var(--head);color:#fff}
.footer-h{color:var(--amber)}
.footer-base{border-top:1px solid rgba(255,255,255,.14);color:#86a9a5}

@media (max-width:1100px){.guide-cols{grid-template-columns:1fr 1fr}}
@media (max-width:960px){
  .hero-grid,.product-teaser,.club-hero,.guide-grid,.hub-group,.free-row,.tool-grid,.club-grid,.tools-row,.decoder-grid{grid-template-columns:1fr}
  .hub-list{grid-template-columns:1fr}
  .calc-out,.mock-bill{position:static}
}
@media (max-width:600px){
  .hero{padding:36px 0 50px}
  .guide-cols{grid-template-columns:1fr}
  .brand-text{font-size:1.12rem}
  .brand-mark{width:34px;height:34px}
}