:root {
  --frost: #F5F8F7;
  --solar: #E3A52B;
  --nordic-blue: #316987;
  --forest: #275547;
  --slate: #31404B;
  --warm-white: #FFFEFA;
  --line: rgba(49, 64, 75, 0.16);
  --shadow: 0 22px 60px rgba(49, 64, 75, 0.12);
  --radius: 26px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--slate);
  background:
    radial-gradient(circle at top left, rgba(227, 165, 43, 0.16), transparent 34rem),
    linear-gradient(180deg, var(--warm-white), var(--frost));
  line-height: 1.65;
}

a {
  color: var(--nordic-blue);
}

a:hover {
  color: var(--forest);
}

button,
input,
textarea {
  font: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 2000;
  padding: 0.7rem 1rem;
  background: var(--slate);
  color: var(--warm-white);
  border-radius: 999px;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  background: rgba(255, 254, 250, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--slate);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.75rem;
  background:
    linear-gradient(135deg, transparent 45%, var(--forest) 46% 58%, transparent 59%),
    radial-gradient(circle at 70% 30%, var(--solar) 0 22%, transparent 23%),
    var(--nordic-blue);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.5);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.main-nav a {
  padding: 0.62rem 0.78rem;
  color: var(--slate);
  text-decoration: none;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 650;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  background: var(--frost);
  color: var(--forest);
}

.main-nav .nav-cta {
  background: var(--slate);
  color: var(--warm-white);
}

.main-nav .nav-cta:hover,
.main-nav .nav-cta[aria-current="page"] {
  background: var(--forest);
  color: var(--warm-white);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--warm-white);
  color: var(--slate);
  border-radius: 999px;
  padding: 0.65rem 0.9rem;
  font-weight: 750;
}

.hero,
.page-main,
.legal-main {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  padding: clamp(3rem, 8vw, 6.5rem) 0 clamp(2rem, 6vw, 4rem);
}

.hero h1,
.page-hero h1 {
  margin: 0;
  max-width: 900px;
  font-size: clamp(2.7rem, 7vw, 5.8rem);
  line-height: 0.95;
  letter-spacing: -0.075em;
  color: var(--slate);
}

.lead {
  max-width: 760px;
  font-size: clamp(1.12rem, 2.4vw, 1.35rem);
  color: rgba(49, 64, 75, 0.86);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--forest);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.78rem 1.1rem;
  border: 0;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
  cursor: pointer;
}

.button.primary {
  background: var(--solar);
  color: #1f2c33;
}

.button.secondary {
  background: var(--slate);
  color: var(--warm-white);
}

.button:hover {
  transform: translateY(-1px);
}

.hero-visual {
  min-height: 330px;
  padding: 1rem;
  border-radius: calc(var(--radius) + 12px);
  background:
    linear-gradient(180deg, rgba(49, 105, 135, 0.10), rgba(39, 85, 71, 0.08)),
    var(--warm-white);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.rooftop-solar-illustration {
  width: 100%;
  height: auto;
}

.sun-path {
  fill: none;
  stroke: var(--solar);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 14 16;
}

.sun {
  fill: var(--solar);
}

.roof {
  fill: var(--slate);
}

.roof-face {
  fill: var(--nordic-blue);
}

.panels rect {
  fill: #dcebee;
  stroke: var(--slate);
  stroke-width: 4;
}

.grid-line {
  stroke: rgba(49, 64, 75, 0.25);
  stroke-width: 3;
  stroke-linecap: round;
}

.section {
  margin: clamp(2rem, 6vw, 5rem) auto;
  padding: clamp(1.4rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 254, 250, 0.76);
  box-shadow: 0 12px 35px rgba(49, 64, 75, 0.06);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 1.8rem;
}

.section h2,
.page-hero h2 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.section h3 {
  margin: 0 0 0.35rem;
  font-size: 1.25rem;
  line-height: 1.2;
}

.diagram-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(150px, 1fr));
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--warm-white);
}

.diagram-list article {
  padding: 1.1rem;
  border-right: 1px solid var(--line);
  min-height: 220px;
}

.diagram-list article:last-child {
  border-right: 0;
}

.diagram-list span {
  display: inline-grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  margin-bottom: 1.3rem;
  border-radius: 999px;
  background: rgba(227, 165, 43, 0.22);
  color: #6b4500;
  font-weight: 850;
}

.diagram-list.compact {
  grid-template-columns: repeat(3, 1fr);
}

.path-section {
  background:
    linear-gradient(90deg, rgba(49, 105, 135, 0.08), transparent),
    var(--warm-white);
}

.energy-path {
  position: relative;
  display: grid;
  gap: 1.2rem;
  padding-left: 2rem;
}

.energy-path::before {
  content: "";
  position: absolute;
  left: 0.74rem;
  top: 0.7rem;
  bottom: 0.7rem;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(var(--solar), var(--nordic-blue), var(--forest));
}

.energy-path article {
  position: relative;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(245, 248, 247, 0.72);
}

.path-dot {
  position: absolute;
  left: -2rem;
  top: 1.35rem;
  width: 1.1rem;
  height: 1.1rem;
  border: 3px solid var(--warm-white);
  border-radius: 50%;
  background: var(--solar);
  box-shadow: 0 0 0 2px var(--nordic-blue);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 1.5rem;
  align-items: start;
}

.note-panel,
.diagram-panel,
.content-panel,
.checklist-panel {
  background:
    linear-gradient(135deg, rgba(227, 165, 43, 0.16), transparent 44%),
    var(--frost);
}

.note-panel,
.diagram-panel {
  padding: 1.3rem;
  border: 1px solid var(--line);
  border-radius: 22px;
}

.check-list {
  padding-left: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  margin: 0.55rem 0;
  padding-left: 1.7rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 0.25rem;
  background: var(--solar);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.65);
}

.slider-shell {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 1.5rem;
  align-items: center;
}

.factor-slider {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.8rem;
  align-items: stretch;
}

.slides {
  min-height: 230px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: var(--slate);
  color: var(--warm-white);
  overflow: hidden;
}

.slide {
  display: none;
  padding: clamp(1.3rem, 4vw, 2.4rem);
}

.slide.is-active {
  display: block;
}

.slide h3 {
  color: var(--solar);
  font-size: clamp(1.7rem, 4vw, 2.8rem);
}

.slider-button {
  width: 3rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--warm-white);
  color: var(--slate);
  font-size: 2rem;
  cursor: pointer;
}

.two-paths,
.guide-links,
.factor-rail {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.path-card,
.guide-links a,
.factor-rail article {
  display: block;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--warm-white);
  text-decoration: none;
  color: var(--slate);
}

.path-card span {
  color: var(--forest);
  font-weight: 800;
}

.guide-links {
  grid-template-columns: repeat(4, 1fr);
}

.guide-links a {
  font-weight: 800;
}

.page-main,
.legal-main {
  padding-bottom: 2rem;
}

.page-hero {
  padding: clamp(2.5rem, 7vw, 5.4rem) 0 1rem;
}

.legal-main {
  max-width: 980px;
}

.legal-section h2,
.article-section h2 {
  margin-top: 2rem;
}

.legal-section h2:first-child,
.article-section h2:first-child {
  margin-top: 0;
}

.mini-diagram {
  display: grid;
  gap: 0.7rem;
}

.mini-diagram span {
  padding: 0.85rem 1rem;
  border-left: 5px solid var(--solar);
  border-radius: 14px;
  background: var(--warm-white);
  font-weight: 800;
}

.check-columns,
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--warm-white);
}

.form-row {
  display: grid;
  gap: 0.35rem;
}

label {
  font-weight: 800;
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(49, 64, 75, 0.28);
  border-radius: 14px;
  padding: 0.85rem 0.9rem;
  background: #fff;
  color: var(--slate);
}

textarea {
  resize: vertical;
}

.form-status {
  margin: 0;
  font-weight: 750;
  color: var(--forest);
}

.site-footer {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.5rem;
  margin-top: 4rem;
  padding: 2rem clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  background: var(--slate);
  color: var(--warm-white);
}

.site-footer a,
.footer-button {
  color: var(--warm-white);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-content: start;
  justify-content: flex-end;
}

.footer-button {
  border: 0;
  padding: 0;
  background: transparent;
  text-decoration: underline;
  cursor: pointer;
}

.copyright {
  grid-column: 1 / -1;
  margin: 0;
  color: rgba(255, 254, 250, 0.74);
}

.cookie-banner,
.cookie-modal {
  position: fixed;
  z-index: 3000;
}

.cookie-banner {
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  display: none;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--warm-white);
  box-shadow: var(--shadow);
}

.cookie-banner.is-visible {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.cookie-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.65rem 0.85rem;
  background: var(--frost);
  color: var(--slate);
  font-weight: 800;
  cursor: pointer;
}

.cookie-button.strong {
  background: var(--solar);
}

.cookie-modal {
  inset: 0;
  display: none;
  place-items: center;
  padding: 1rem;
  background: rgba(49, 64, 75, 0.48);
}

.cookie-modal.is-visible {
  display: grid;
}

.cookie-dialog {
  width: min(620px, 100%);
  max-height: 90vh;
  overflow: auto;
  padding: 1.4rem;
  border-radius: 24px;
  background: var(--warm-white);
  box-shadow: var(--shadow);
}

.cookie-category {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.cookie-category input {
  width: auto;
  min-width: 1.3rem;
  min-height: 1.3rem;
}

:focus-visible {
  outline: 4px solid rgba(227, 165, 43, 0.75);
  outline-offset: 3px;
}

@media (max-width: 1200px) {
  .diagram-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .diagram-list article:nth-child(3) {
    border-right: 0;
  }

  .guide-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .site-header {
    align-items: flex-start;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.5rem);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.8rem;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--warm-white);
    box-shadow: var(--shadow);
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    border-radius: 14px;
  }

  .hero,
  .split-section,
  .slider-shell,
  .check-columns,
  .contact-layout,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 240px;
  }

  .diagram-list,
  .diagram-list.compact,
  .two-paths,
  .factor-rail,
  .guide-links {
    grid-template-columns: 1fr;
  }

  .diagram-list article {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .diagram-list article:last-child {
    border-bottom: 0;
  }

  .site-footer nav {
    justify-content: flex-start;
  }

  .cookie-banner.is-visible {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero,
  .page-main,
  .legal-main {
    width: min(100% - 1rem, var(--max));
  }

  .site-header {
    padding: 0.8rem;
  }

  .brand span:last-child {
    max-width: 12rem;
    overflow-wrap: anywhere;
  }

  .section {
    padding: 1rem;
    border-radius: 20px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 2.45rem;
  }

  .factor-slider {
    grid-template-columns: 1fr;
  }

  .slider-button {
    width: 100%;
    min-height: 2.7rem;
  }

  .cookie-actions {
    flex-direction: column;
  }

  .cookie-button,
  .cookie-actions .button {
    width: 100%;
  }
}