:root {
  --ink: #111513;
  --ink-soft: #252b28;
  --paper: #f6f4ed;
  --white: #fff;
  --solar: #fdb813;
  --solar-strong: #ea9f00;
  --green: #08784b;
  --muted: #626b66;
  --line: #dcded8;
  --radius: 18px;
  --radius-lg: 30px;
  --shadow: 0 20px 60px rgba(17, 21, 19, .12);
  --container: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--solar); outline-offset: 4px; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 9999; padding: 10px 16px; background: var(--solar); color: var(--ink); font-weight: 800; border-radius: 0 0 8px 8px; }
.skip-link:focus { top: 0; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.narrow { width: min(calc(100% - 40px), 820px); margin-inline: auto; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 14px; color: var(--green); font-size: .78rem; font-weight: 900; letter-spacing: .15em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 34px; height: 3px; background: currentColor; }
.eyebrow.light { color: var(--solar); }
.section { padding: clamp(72px, 9vw, 122px) 0; }
.section.alt { background: var(--white); }
.section.dark { color: var(--white); background: var(--ink); }
.section-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 480px); gap: 40px; align-items: end; margin-bottom: 46px; }
.section-head > * { margin: 0; }
h1, h2, h3 { margin-top: 0; color: inherit; font-weight: 850; letter-spacing: -.045em; line-height: 1.06; }
h1 { font-size: clamp(3rem, 7vw, 6.9rem); }
h2 { font-size: clamp(2.25rem, 5vw, 4.8rem); }
h3 { font-size: clamp(1.35rem, 2vw, 1.9rem); }
p { margin-top: 0; }
.lede { color: var(--muted); font-size: clamp(1.1rem, 2vw, 1.35rem); }
.dark .lede { color: #c8cec9; }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--green); font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.text-link::after { content: "→"; }
.btn { display: inline-flex; justify-content: center; align-items: center; min-height: 52px; padding: 13px 23px; border: 1px solid transparent; border-radius: 999px; text-decoration: none; font-weight: 850; transition: transform .2s, background .2s, border-color .2s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: var(--ink); background: var(--solar); }
.btn-primary:hover { background: #ffc83f; }
.btn-outline { color: var(--white); border-color: rgba(255,255,255,.55); background: rgba(0,0,0,.16); }
.btn-outline:hover { border-color: var(--white); background: rgba(0,0,0,.38); }
.btn-dark { color: var(--white); background: var(--ink); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.site-header { position: absolute; inset: 0 0 auto; z-index: 1000; color: var(--white); border-bottom: 1px solid rgba(255,255,255,.22); }
.site-header.inner { position: relative; color: var(--ink); background: var(--white); border-bottom-color: var(--line); }
.nav { min-height: 82px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; line-height: 1; }
.brand-mark { width: 33px; height: 33px; display: grid; place-items: center; color: var(--ink); background: var(--solar); border-radius: 7px 16px 7px 16px; font-size: 1.25rem; font-weight: 950; box-shadow: inset 0 0 0 1px rgba(0,0,0,.1); }
.brand-copy { display: grid; gap: 4px; font-size: .92rem; font-weight: 900; letter-spacing: .02em; text-transform: uppercase; }
.brand-copy small { color: inherit; opacity: .72; font-size: .62rem; font-weight: 700; letter-spacing: .14em; }
.nav-links { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 32px); margin: 0; padding: 0; list-style: none; }
.nav-links a { font-size: .86rem; font-weight: 750; text-decoration: none; }
.nav-links a:not(.btn):hover { color: var(--solar); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; color: inherit; border: 1px solid currentColor; border-radius: 50%; background: transparent; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: currentColor; }

.hero { min-height: min(920px, 100svh); position: relative; display: flex; align-items: end; color: var(--white); background: var(--ink); overflow: hidden; }
.hero-media, .hero-media::after { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-media::after { content: ""; background: linear-gradient(90deg, rgba(8,12,10,.94) 0%, rgba(8,12,10,.7) 48%, rgba(8,12,10,.16) 100%), linear-gradient(0deg, rgba(8,12,10,.8), transparent 52%); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 800px) 1fr; gap: 44px; align-items: end; padding-top: 170px; padding-bottom: clamp(64px, 9vw, 106px); }
.hero h1 { max-width: 850px; margin-bottom: 24px; }
.hero h1 em { color: var(--solar); font-style: normal; }
.hero-copy > p:not(.eyebrow) { max-width: 700px; margin-bottom: 30px; color: #e0e5e1; font-size: clamp(1.08rem, 1.8vw, 1.35rem); }
.hero-proof { align-self: end; padding: 24px; border: 1px solid rgba(255,255,255,.3); border-radius: var(--radius); background: rgba(10,14,12,.45); backdrop-filter: blur(10px); }
.hero-proof strong { display: block; margin-bottom: 8px; color: var(--solar); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
.hero-proof p { margin-bottom: 14px; }
.hero-proof a { font-size: .9rem; font-weight: 800; text-underline-offset: 4px; }
.trust-strip { position: relative; z-index: 2; color: var(--white); background: var(--ink); border-top: 1px solid rgba(255,255,255,.12); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { padding: 23px 22px; border-right: 1px solid rgba(255,255,255,.12); }
.trust-item:first-child { border-left: 1px solid rgba(255,255,255,.12); }
.trust-item strong { display: block; color: var(--solar); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; }
.trust-item span { color: #c8cec9; font-size: .88rem; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.solution-card { min-height: 500px; position: relative; display: flex; align-items: end; overflow: hidden; color: var(--white); border-radius: var(--radius-lg); background: var(--ink); box-shadow: var(--shadow); }
.solution-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.solution-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(6,9,8,.95) 0%, rgba(6,9,8,.12) 75%); }
.solution-card:hover img { transform: scale(1.035); }
.solution-content { position: relative; z-index: 1; padding: 28px; }
.solution-content .kicker { color: var(--solar); font-size: .74rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.solution-content h3 { margin: 8px 0 10px; }
.solution-content p { margin-bottom: 0; color: #d9ddda; font-size: .94rem; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.fact { padding: clamp(24px, 4vw, 42px); background: var(--white); }
.fact strong { display: block; margin-bottom: 10px; color: var(--green); font-size: clamp(2rem, 4vw, 3.8rem); letter-spacing: -.06em; line-height: 1; }
.fact span { color: var(--muted); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 90px); align-items: center; }
.split-media { overflow: hidden; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.split-media img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.check-list { display: grid; gap: 18px; margin: 28px 0 34px; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 34px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; display: grid; place-items: center; width: 23px; height: 23px; color: var(--ink); background: var(--solar); border-radius: 50%; font-size: .78rem; font-weight: 950; }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { counter-increment: step; padding: 28px; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius); background: var(--ink-soft); }
.step::before { content: "0" counter(step); display: block; margin-bottom: 30px; color: var(--solar); font-size: .78rem; font-weight: 900; letter-spacing: .12em; }
.step h3 { font-size: 1.3rem; }
.step p { margin-bottom: 0; color: #bac1bc; font-size: .92rem; }

.project-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; grid-template-rows: 290px 290px; gap: 14px; }
.project { position: relative; overflow: hidden; border-radius: var(--radius); }
.project:first-child { grid-row: 1 / 3; }
.project img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s; }
.project:hover img { transform: scale(1.04); }
.project figcaption { position: absolute; inset: auto 0 0; padding: 30px 20px 18px; color: var(--white); background: linear-gradient(transparent, rgba(0,0,0,.8)); font-weight: 750; }
.solarenergy-band { display: grid; grid-template-columns: 1fr auto; gap: 34px; align-items: center; padding: clamp(30px, 5vw, 58px); color: var(--white); background: linear-gradient(120deg, #0a7b4b, #075b3a); border-radius: var(--radius-lg); }
.solarenergy-band h2 { max-width: 780px; margin-bottom: 12px; font-size: clamp(2rem, 4vw, 4rem); }
.solarenergy-band p { max-width: 720px; margin-bottom: 0; color: #d8f2e5; }
.solarenergy-band .btn { white-space: nowrap; }

.faq-list { display: grid; gap: 12px; }
.faq-list details { padding: 0 24px; border: 1px solid var(--line); border-radius: 14px; background: var(--white); }
.faq-list summary { display: flex; justify-content: space-between; gap: 20px; padding: 22px 0; cursor: pointer; font-weight: 800; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--green); font-size: 1.5rem; line-height: 1; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 860px; padding-bottom: 22px; margin: 0; color: var(--muted); }

.contact-wrap { display: grid; grid-template-columns: .82fr 1.18fr; gap: 24px; }
.contact-copy, .contact-form { padding: clamp(28px, 5vw, 54px); border-radius: var(--radius-lg); }
.contact-copy { color: var(--white); background: var(--ink); }
.contact-copy h2 { font-size: clamp(2.3rem, 4vw, 4.3rem); }
.contact-copy p { color: #cbd1cd; }
.contact-meta { display: grid; gap: 12px; margin-top: 34px; }
.contact-meta a { color: var(--solar); font-weight: 800; }
.contact-form { background: var(--white); box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .85rem; font-weight: 800; }
.field input, .field textarea, .field select { width: 100%; padding: 14px 15px; color: var(--ink); border: 1px solid #cfd4d0; border-radius: 10px; background: #fbfcfa; }
.field textarea { min-height: 132px; resize: vertical; }
.form-note { color: var(--muted); font-size: .78rem; }
.form-status { min-height: 24px; margin: 12px 0 0; font-size: .88rem; font-weight: 750; }
.hp-field { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }

.article-hero { padding: clamp(74px, 10vw, 130px) 0 70px; color: var(--white); background: var(--ink); }
.article-hero h1 { max-width: 1000px; margin-bottom: 22px; font-size: clamp(2.7rem, 6vw, 6rem); }
.article-hero .lede { max-width: 820px; color: #cbd1cd; }
.breadcrumbs { margin-bottom: 42px; color: #aab1ac; font-size: .83rem; }
.breadcrumbs a { color: var(--white); }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) minmax(240px, 330px); justify-content: space-between; gap: 70px; }
.prose h2 { margin: 58px 0 18px; font-size: clamp(2rem, 4vw, 3.4rem); }
.prose h3 { margin: 38px 0 12px; }
.prose p, .prose li { color: #39413d; }
.prose a { color: var(--green); font-weight: 700; }
.prose img { margin: 34px 0; border-radius: var(--radius); }
.prose table { width: 100%; border-collapse: collapse; margin: 28px 0; background: var(--white); }
.prose th, .prose td { padding: 14px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { background: #eceee9; }
.aside-card { position: sticky; top: 28px; padding: 26px; border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow); }
.aside-card h2 { font-size: 1.45rem; }
.aside-card ul { display: grid; gap: 11px; margin: 0 0 24px; padding-left: 20px; }
.source-note { padding: 22px; border-left: 4px solid var(--solar); background: #fff8dc; border-radius: 0 12px 12px 0; }

.site-footer { padding: 62px 0 28px; color: #d1d6d2; background: #0b0e0c; }
.footer-grid { display: grid; grid-template-columns: 1.35fr repeat(3, 1fr); gap: 42px; }
.footer-title { margin-bottom: 15px; color: var(--white); font-size: .8rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.footer-links { display: grid; gap: 9px; margin: 0; padding: 0; list-style: none; }
.footer-links a { color: #b6bdb8; text-decoration: none; font-size: .9rem; }
.footer-links a:hover { color: var(--solar); }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; margin-top: 45px; padding-top: 24px; color: #89918b; border-top: 1px solid #2a302c; font-size: .78rem; }
.whatsapp-float { position: fixed; right: 18px; bottom: 18px; z-index: 900; display: grid; place-items: center; width: 56px; height: 56px; color: var(--white); background: #168b55; border: 3px solid var(--white); border-radius: 50%; box-shadow: 0 10px 30px rgba(0,0,0,.24); text-decoration: none; font-weight: 950; }

@media (max-width: 980px) {
  .menu-toggle { display: block; }
  .nav-links { position: absolute; top: 82px; left: 20px; right: 20px; display: none; align-items: stretch; padding: 22px; color: var(--ink); background: var(--white); border-radius: 14px; box-shadow: var(--shadow); }
  .nav-links.open { display: grid; }
  .nav-links .btn { width: 100%; }
  .hero-grid, .section-head, .split, .contact-wrap, .article-layout { grid-template-columns: 1fr; }
  .hero-grid { padding-top: 150px; }
  .hero-proof { max-width: 520px; }
  .card-grid, .steps { grid-template-columns: 1fr 1fr; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .facts { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr 1fr; grid-template-rows: 320px 250px 250px; }
  .project:first-child { grid-column: 1 / -1; grid-row: auto; }
  .solarenergy-band { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .aside-card { position: static; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .container, .narrow { width: min(calc(100% - 28px), var(--container)); }
  .brand-copy { font-size: .78rem; }
  .hero { min-height: 820px; }
  .hero-media::after { background: linear-gradient(0deg, rgba(8,12,10,.95) 0%, rgba(8,12,10,.72) 70%, rgba(8,12,10,.45) 100%); }
  .hero-grid { gap: 28px; padding-top: 130px; padding-bottom: 56px; }
  .hero h1 { font-size: clamp(2.9rem, 15vw, 4.5rem); }
  .actions { display: grid; }
  .trust-grid, .card-grid, .steps, .project-grid, .form-grid, .footer-grid { grid-template-columns: 1fr; }
  .trust-item { border-left: 1px solid rgba(255,255,255,.12); }
  .solution-card { min-height: 420px; }
  .project-grid { grid-template-rows: repeat(5, 260px); }
  .project:first-child { grid-column: auto; }
  .field { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}