:root {
  --green: #75bd00;
  --green-dark: #5a9700;
  --green-soft: #eaf6d7;
  --text: #333941;
  --muted: #68717c;
  --line: #e7ebef;
  --surface: #ffffff;
  --surface-soft: #f7faf4;
  --dark: #2f363d;
  --shadow: 0 24px 70px rgba(47, 54, 61, 0.14);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 10%,
      rgba(117, 189, 0, 0.13),
      transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f8faf7 100%);
}

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

p {
  color: var(--muted);
  line-height: 1.7;
}

.logo-v {
  color: #8ac800;
}

/* HEADER */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;

  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;

  padding: 18px clamp(20px, 5vw, 72px);

  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);

  border-bottom: 1px solid rgba(231, 235, 239, 0.8);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;

  font-weight: 800;
  font-size: 1.25rem;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(117, 189, 0, 0.18);
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;

  font-weight: 650;
  color: var(--muted);
}

.nav a:hover {
  color: var(--green-dark);
}

.nav-button {
  color: var(--green-dark) !important;
  padding: 10px 16px;
  border: 1px solid rgba(117, 189, 0, 0.28);
  border-radius: 999px;
  background: var(--green-soft);
}

/* LAYOUT */

.section {
  padding: clamp(64px, 9vw, 112px)
           clamp(20px, 5vw, 72px);

  max-width: 1220px;
  margin: 0 auto;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.grid {
  display: grid;
  gap: 20px;
}

.cards-3 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* HERO */

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(36px, 6vw, 88px);

  align-items: center;
  min-height: calc(100vh - 80px);
}

.hero-card {
  border-radius: 42px;
  padding: clamp(18px, 4vw, 42px);
}

.hero-card img {
  width: 100%;
  display: block;
  border-radius: 30px;
}

/* TYPO */

.eyebrow {
  margin: 0 0 14px;

  color: var(--green-dark);

  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;

  font-size: 0.82rem;
}

h1,
h2,
h3 {
  color: var(--text);
  line-height: 1.08;
  margin: 0;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 5.2rem);
  letter-spacing: -0.06em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.6rem);
  letter-spacing: -0.045em;
}

h3 {
  font-size: 1.35rem;
}

.lead {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  max-width: 660px;
}

/* BUTTONS */

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;

  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  min-height: 48px;
  padding: 13px 22px;

  border-radius: 999px;

  font-weight: 800;

  border: 1px solid transparent;

  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.primary {
  color: #fff;

  background:
    linear-gradient(
      135deg,
      var(--green),
      var(--green-dark)
    );

  box-shadow:
    0 14px 30px rgba(117, 189, 0, 0.26);
}

.secondary {
  color: var(--text);
  background: #fff;
  border-color: var(--line);
}

/* CARDS */

.card,
.download-card,
.info-box {
  background: rgba(255, 255, 255, 0.9);

  border: 1px solid var(--line);
  border-radius: var(--radius);

  padding: 28px;

  box-shadow:
    0 16px 42px rgba(47, 54, 61, 0.07);
}

.icon {
  display: inline-flex;

  margin-bottom: 28px;

  width: 44px;
  height: 44px;

  align-items: center;
  justify-content: center;

  border-radius: 16px;

  background: var(--green-soft);
  color: var(--green-dark);

  font-weight: 900;
}

/* SPLIT */

.split {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 42px;

  align-items: center;
}

.feature-list {
  display: grid;
  gap: 14px;
}

.feature-list div {
  display: grid;
  gap: 4px;

  padding: 22px;

  border: 1px solid var(--line);
  border-radius: 22px;

  background: #fff;
}

.feature-list strong {
  font-size: 1.05rem;
}

.feature-list span {
  color: var(--muted);
}

/* DARK SECTION */

.dark-section {
  max-width: none;

  background:
    radial-gradient(
      circle at 80% 0%,
      rgba(117, 189, 0, 0.28),
      transparent 35%
    ),
    var(--dark);

  color: #fff;

  border-radius: 44px;

  margin: 0 clamp(20px, 5vw, 72px);
}

.dark-section .section-heading,
.dark-section .grid {
  max-width: 1220px;

  margin-left: auto;
  margin-right: auto;
}

.dark-section h2,
.dark-section h3 {
  color: #fff;
}

.dark-section p {
  color: rgba(255, 255, 255, 0.74);
}

.dark-section article {
  padding: 28px;

  border-radius: var(--radius);

  background: rgba(255, 255, 255, 0.08);

  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* CTA */

.cta {
  text-align: center;
  max-width: 780px;
}

.cta .button {
  margin-top: 12px;
}

.cta.dark-section {
  max-width: none !important;
  width: 100%;

  margin-left: 0;
  margin-right: 0;

  border-radius: 0;

  text-align: center;
}

.cta.dark-section p {
  max-width: 700px;
  margin: 18px auto 0 auto;
}

.cta.dark-section .button.secondary {
  margin-top: 28px;
  background: #fff;
}

/* DOWNLOAD */

.download-grid {
  padding-top: 20px;

  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));

  gap: 20px;
}

.download-card {
  position: relative;

  display: flex;
  flex-direction: column;
  align-items: flex-start;

  min-height: 280px;
}

.download-card p {
  flex: 1;
}

.download-note {
  margin-top: 10px;

  padding: 12px 14px;

  border-radius: 14px;

  background: rgba(138, 200, 0, 0.08);
  border: 1px solid rgba(138, 200, 0, 0.18);

  font-size: 0.95rem;
  line-height: 1.5;
  width:100%;
}

/* CODE */

pre {
  overflow: auto;

  padding: 20px;

  border-radius: 18px;

  background: #20252b;
  color: #eaf6d7;
}

code {
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    monospace;
}

/* FOOTER */

.footer {
  margin-top: 60px;

  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;

  padding: 32px clamp(20px, 5vw, 72px);

  color: var(--muted);

  border-top: 1px solid var(--line);
}

.footer a {
  color: var(--green-dark);
  font-weight: 800;
}

.footer a:hover {
  color: var(--green);
}

/* SOLVER */

.solver-section {
  max-width: 1100px;

  margin: 100px auto;

  padding: 0 24px;
}

.solver-section h2 {
  text-align: center;
  margin-bottom: 20px;
}

.solver-subline {
  text-align: center;

  max-width: 850px;

  margin: 0 auto 50px auto;

  line-height: 1.7;
  opacity: 0.9;
}

.solver-grid {
  display: grid;
  grid-template-columns:
    repeat(auto-fit, minmax(260px, 1fr));

  gap: 24px;

  margin-bottom: 50px;
}

.solver-card,
.step-card {
  padding: 28px;

  border-radius: 24px;

  background: rgba(255, 255, 255, 0.04);

  border: 1px solid rgba(255, 255, 255, 0.08);
}

.solver-card h3 {
  margin-bottom: 14px;
}

.solver-card p {
  line-height: 1.7;
  opacity: 0.9;
}

.solver-list {
  display: grid;

  grid-template-columns:
    repeat(auto-fit, minmax(250px, 1fr));

  gap: 16px;

  margin-top: 20px;
}

.solver-list div {
  padding: 16px 20px;

  border-radius: 16px;

  background: rgba(138, 200, 0, 0.08);

  border: 1px solid rgba(138, 200, 0, 0.2);
}

.step-number {
  width: 44px;
  height: 44px;

  border-radius: 999px;

  display: flex;
  align-items: center;
  justify-content: center;

  background: rgba(138, 200, 0, 0.12);

  border: 1px solid rgba(138, 200, 0, 0.25);

  color: #8ac800;
  font-weight: 700;

  margin-bottom: 18px;
}

/* RESPONSIVE */


@media (max-width: 1100px) {

  .cards-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 860px) {

  .nav a:not(.nav-button) {
    display: none;
  }

  .hero,
  .split,
  .cards-3,
  .download-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .dark-section {
    border-radius: 28px;
    margin: 0 14px;
  }

}

@media (max-width: 520px) {

  .site-header {
    padding: 14px 18px;
  }

  .brand span {
    display: none;
  }

  .section {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .footer {
    flex-direction: column;
    align-items: center;
  }

}