:root {
  --bg: #050505;
  --panel: #0d0d0d;
  --panel-soft: #141414;
  --text: #f2f2f2;
  --muted: #aaaaaa;
  --brand: #f0f0f0;
  --brand-2: #bdbdbd;
  --line: #2a2a2a;
  --ok: #d8d8d8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(circle at 20% 0%, #151515 0%, var(--bg) 45%);
  color: var(--text);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(5, 5, 5, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-weight: 800;
  letter-spacing: 0.02em;
}

.nav-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 1rem;
}

.nav-links a {
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
  padding: 4rem 0;
  background: radial-gradient(ellipse at 80% 50%, #0a0a0a 0%, transparent 60%);
}

.eyebrow {
  color: var(--ok);
  font-weight: 600;
  margin-bottom: 0.8rem;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.05;
}

.lead {
  margin-top: 1rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 65ch;
}

.hero-cta {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  padding: 0.75rem 1.15rem;
  border-radius: 0.8rem;
  font-weight: 600;
  transition: 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: #5f5f5f;
}

.btn.primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #0b0b0b;
  border: 1px solid #8a8a8a;
}

.hero-image {
  border-radius: 0;
  overflow: visible;
  border: none;
  background: #000000;
  box-shadow: none;
}

.hero-image img {
  width: 100%;
  filter: grayscale(100%) contrast(106%);
  -webkit-mask-image: radial-gradient(
    ellipse at 50% 46%,
    rgba(0, 0, 0, 1) 38%,
    rgba(0, 0, 0, 0.92) 55%,
    rgba(0, 0, 0, 0.68) 70%,
    rgba(0, 0, 0, 0.35) 82%,
    rgba(0, 0, 0, 0.08) 92%,
    rgba(0, 0, 0, 0) 100%
  );
  mask-image: radial-gradient(
    ellipse at 50% 46%,
    rgba(0, 0, 0, 1) 38%,
    rgba(0, 0, 0, 0.92) 55%,
    rgba(0, 0, 0, 0.68) 70%,
    rgba(0, 0, 0, 0.35) 82%,
    rgba(0, 0, 0, 0.08) 92%,
    rgba(0, 0, 0, 0) 100%
  );
}

.section {
  padding: 2.5rem 0;
}

.section-head {
  margin-bottom: 1.2rem;
}

.section-head h2 {
  font-size: clamp(1.4rem, 4vw, 2rem);
}

.section-head p {
  margin-top: 0.55rem;
  color: var(--muted);
  max-width: 70ch;
  line-height: 1.6;
}

.section-head-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-end;
}

.pill {
  border: 1px solid #5a5a5a;
  color: #d6d6d6;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
  white-space: nowrap;
}

.grid {
  display: grid;
  gap: 1rem;
}

.cards-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cards-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: linear-gradient(180deg, var(--panel), var(--panel-soft));
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card.has-image {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1.5rem;
  align-items: start;
}

.card .content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.45rem;
}

.card p {
  color: var(--muted);
  line-height: 1.6;
}

.card .meta {
  margin-top: 0.65rem;
  font-size: 0.85rem;
  color: #9c9c9c;
}

.calculator-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.calculator-form {
  display: grid;
  gap: 0.75rem;
}

.calculator-form label {
  display: grid;
  gap: 0.4rem;
  color: var(--text);
  font-size: 0.92rem;
}

.calculator-form input {
  width: 100%;
  background: #0a0a0a;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: 0.65rem 0.75rem;
  outline: none;
}

.calculator-form input:focus {
  border-color: #6a6a6a;
}

.calculator-result {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: #0a0a0a;
  padding: 1rem;
  color: var(--muted);
  line-height: 1.6;
}

.calculator-result strong {
  color: var(--text);
}

.calc-help ol,
.calc-help ul {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.55rem;
  color: var(--muted);
}

.calc-help strong {
  color: var(--text);
}

.story-image {
  margin: 0;
  border-radius: 0.5rem;
  overflow: hidden;
  border: 1px solid var(--line);
  width: 100%;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
  flex-shrink: 0;
}

.story-image:hover {
  transform: scale(1.02);
  border-color: #5f5f5f;
}

.story-image img {
  width: 100%;
  height: auto;
  display: block;
  filter: grayscale(100%) contrast(106%);
}

.zoomable-image {
  cursor: zoom-in;
}

@media (max-width: 768px) {
  .card.has-image {
    grid-template-columns: 1fr;
  }

  .calculator-card {
    grid-template-columns: 1fr;
  }
  
  .story-image {
    max-width: 100%;
  }
}

.image-modal {
  display: none;
  position: fixed;
  z-index: 999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.92);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.image-modal.active {
  display: flex;
}

.image-modal img {
  max-width: 90%;
  max-height: 90vh;
  border-radius: 0.5rem;
  filter: grayscale(100%) contrast(106%);
  cursor: default;
}

.cta-block {
  text-align: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  border: 1px solid #404040;
  border-radius: 1rem;
  padding: 2rem;
}

.cta-block p {
  color: var(--muted);
  margin-top: 0.65rem;
  margin-bottom: 1rem;
}

.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  padding-top: 1.2rem;
  padding-bottom: 1.5rem;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: flex-start;
}

.footer-wrap p {
  color: var(--muted);
  margin-top: 0.35rem;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.contact-list a {
  color: #d0d0d0;
}

.contact-list a:hover {
  color: white;
}

.copyright {
  text-align: center;
  margin-top: 1rem;
  color: #8f8f8f;
  font-size: 0.88rem;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 2rem;
  }

  .cards-3,
  .cards-2 {
    grid-template-columns: 1fr;
  }

  .section-head-row,
  .footer-wrap,
  .nav-wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}