:root {
  --ink: #10201c;
  --muted: #52645f;
  --line: #d9e2dd;
  --paper: #f6f8f5;
  --white: #ffffff;
  --green: #1f6f54;
  --green-dark: #154b3a;
  --gold: #b88a44;
  --blue: #2f6f9f;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 5vw;
  background: rgba(246, 248, 245, 0.9);
  border-bottom: 1px solid rgba(217, 226, 221, 0.85);
  backdrop-filter: blur(14px);
}

.brand {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand span {
  font-size: 13px;
  font-weight: 800;
  color: var(--muted);
}

.nav {
  display: flex;
  gap: 28px;
  align-items: center;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.lang-toggle {
  min-width: 72px;
  min-height: 36px;
  padding: 8px 12px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.lang-toggle:hover {
  border-color: var(--green);
}

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

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 120px 5vw 72px;
  background: #e7eee9;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(246, 248, 245, 0.98) 0%, rgba(246, 248, 245, 0.91) 30%, rgba(246, 248, 245, 0.42) 58%, rgba(246, 248, 245, 0.12) 100%),
    linear-gradient(0deg, rgba(16, 32, 28, 0.18), rgba(16, 32, 28, 0));
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(660px, 100%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
  line-height: 1.25;
}

p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.hero-copy {
  max-width: 600px;
  margin-bottom: 30px;
  color: #31433e;
  font-size: 20px;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
}

.button.primary {
  color: var(--white);
  background: var(--green);
}

.button.primary:hover {
  background: var(--green-dark);
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  border-color: var(--line);
}

.button.secondary:hover {
  border-color: var(--green);
}

.section {
  padding: 96px 5vw;
}

.section-heading {
  width: min(860px, 100%);
  margin-bottom: 38px;
}

.problem-grid,
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.problem-grid article,
.case-grid article {
  min-height: 230px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.services {
  background: #ffffff;
}

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

.service-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 22px;
  align-items: start;
  padding: 28px;
  background: #f7faf8;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.service-number {
  color: var(--gold);
  font-size: 22px;
  font-weight: 900;
}

.use-cases {
  background: #eef3ef;
}

.process {
  background: var(--ink);
  color: var(--white);
}

.process .eyebrow,
.process h2 {
  color: var(--white);
}

.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  padding: 0;
  margin: 0;
  list-style: none;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.steps li {
  min-height: 220px;
  padding: 26px;
  color: rgba(255, 255, 255, 0.78);
  background: var(--ink);
  font-size: 16px;
  line-height: 1.55;
}

.steps span {
  display: block;
  margin-bottom: 16px;
  color: var(--white);
  font-size: 20px;
  font-weight: 900;
}

.steps .step-copy {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 16px;
  font-weight: 400;
}

.demo {
  background: #f5f1e9;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.demo-panel {
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 28px;
  align-items: start;
  padding: 40px;
  background: var(--white);
  border: 1px solid #e0d6c5;
  border-radius: 8px;
}

.demo-panel h2,
.demo-panel h3 {
  margin-bottom: 16px;
}

.contact {
  background: var(--white);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 64px;
  align-items: start;
}

.contact-text h2 {
  margin-bottom: 18px;
}

.contact-details {
  margin-top: 32px;
}

.contact-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 20px;
  align-items: center;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
}

.contact-row:first-child {
  border-top: 1px solid var(--line);
}

.contact-row-label {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.contact-row-value {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

a.contact-row:hover .contact-row-value {
  color: var(--green);
}

.contact-qr {
  text-align: center;
}

.qr-crop {
  width: 190px;
  height: 255px;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.qr-image {
  width: 190px;
  height: auto;
  display: block;
}

.qr-caption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 28px 5vw;
  color: var(--muted);
  background: #edf2ee;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.site-footer span:first-child {
  color: var(--ink);
  font-weight: 900;
}

/* Case Studies */
.case-studies {
  background: var(--white);
}

.case-study-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.case-study-card {
  padding: 32px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.case-tag {
  display: inline-block;
  margin-bottom: 18px;
  padding: 4px 10px;
  background: rgba(31, 111, 84, 0.08);
  border-radius: 4px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.case-study-card h3 {
  margin-bottom: 14px;
  font-size: 21px;
}

.case-study-card p {
  margin-bottom: 12px;
}

.case-note {
  color: #6f7c77;
  font-size: 13px;
  font-style: italic;
}

.case-result {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.case-result-label {
  margin-bottom: 8px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.case-result-text {
  margin-bottom: 0;
  font-size: 15px;
}

/* About */
.about {
  background: #f5f1e9;
}

.about-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: start;
}

.about-text p {
  margin-bottom: 18px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-text h2 {
  margin-top: 18px;
  margin-bottom: 24px;
}

.about-pillars {
  display: grid;
  gap: 14px;
}

.about-pillar {
  padding: 22px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.about-pillar-label {
  margin-bottom: 8px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.about-pillar p {
  margin-bottom: 0;
  font-size: 15px;
}

@media (max-width: 960px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .lang-toggle {
    position: absolute;
    top: 18px;
    right: 5vw;
  }

  .nav {
    width: 100%;
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    min-height: 760px;
    padding-top: 70px;
    align-items: flex-start;
  }

  .hero-image {
    object-position: 63% center;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(246, 248, 245, 0.98) 0%, rgba(246, 248, 245, 0.88) 48%, rgba(246, 248, 245, 0.18) 100%),
      linear-gradient(90deg, rgba(246, 248, 245, 0.86), rgba(246, 248, 245, 0.26));
  }

  .problem-grid,
  .case-grid,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .demo-grid,
  .demo-panel {
    grid-template-columns: 1fr;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .contact-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-qr {
    text-align: left;
  }
}

@media (max-width: 620px) {
  .nav {
    font-size: 13px;
  }

  .hero {
    min-height: 720px;
    padding-right: 20px;
    padding-left: 20px;
  }

  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 30px;
  }

  .hero-copy {
    font-size: 18px;
  }

  .section {
    padding: 70px 20px;
  }

  .problem-grid,
  .case-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .problem-grid article,
  .case-grid article,
  .steps li {
    min-height: auto;
  }

  .service-item {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 22px;
  }

  .demo-panel {
    padding: 24px;
  }

  .button {
    width: 100%;
  }
}