:root {
  --bg: #f6fafc;
  --surface: #ffffff;
  --text: #1a2a33;
  --muted: #4d6571;
  --line: #d8e4ea;
  --brand: #0c8a9e;
  --brand-dark: #086575;
  --shadow: 0 8px 24px rgba(10, 38, 52, 0.08);
  --radius: 14px;
  --max: 1100px;
}
*,
:before,
:after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f9fcfd 0%, #eef5f8 100%);
  line-height: 1.55;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--brand-dark);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

.container {
  width: min(var(--max), 92vw);
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--brand-dark);
  color: #fff;
  padding: .6rem .9rem;
  z-index: 999;
}

.skip-link:focus {
  left: .6rem;
  top: .6rem;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .93);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 0;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
  color: var(--text);
}

.brand img {
  width: 100px;
  height: 100px;
  object-fit: contain;
}

.nav-list,
.footer-links,
.inline-links,
.lang-switch-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: .9rem;
  flex-wrap: wrap;
}

.nav-list a {
  color: var(--muted);
  font-weight: 600;
}

.nav-list a.active {
  color: var(--brand-dark);
}

.lang-switch-links a {
  font-size: .9rem;
  font-weight: 700;
  color: var(--muted);
  padding: .2rem .45rem;
  border: 1px solid #c5d8df;
  border-radius: 999px;
}

.lang-switch-links a.active {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.faq-lang-switch {
  margin: .2rem 0 1rem;
}

.page {
  padding: 2rem 0 2.8rem;
}

h1 {
  font-size: clamp(1.9rem, 4vw, 2.5rem);
  line-height: 1.2;
  margin-top: 0;
  margin-bottom: .8rem;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.2rem);
  font-weight: 800;
  color: var(--brand-dark);
  text-shadow: 0 6px 18px rgba(12, 64, 78, .18);
  white-space: nowrap;
}

h2 {
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  margin-top: 2rem;
  margin-bottom: .7rem;
}

.why-section h2 {
  margin-top: 1rem;
  margin-bottom: .2rem;
  text-align: center;
}

.why-section {
  margin-bottom: .3rem;
}

.lead {
  color: var(--muted);
  margin: 0 auto 1.4rem;
  max-width: 75ch;
  align-items: center;
  text-align: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.4rem;
  align-items: center;
}

.hero-card {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: none;
  overflow: hidden;
  width: fit-content;
  margin: 0 auto;
}

.hero-card img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  object-fit: contain;
  max-height: 360px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 320px));
  gap: 1rem;
  margin: 1rem auto 0;
  justify-items: center;
  justify-content: center;
  width: 100%;
  max-width: 1100px;
}

.why-image {
  width: 100%;
  max-width: 720px;
  display: block;
  margin: .2rem auto;
  border-radius: var(--radius);
  background: var(--bg);
  height: 260px;
  object-fit: cover;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.solution-card img {
  width: 100%;
  height: 220px;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  margin-bottom: .75rem;
}

.solutions-grid {
  margin-top: 1.4rem;
  align-items: start;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

.solutions-section h2,
.solutions-section .lead,
.solutions-section .actions {
  text-align: center;
}

.solutions-section .cards-grid {
  justify-items: center;
}

.solutions-section .solution-card {
  width: min(520px, 100%);
}

.card blockquote {
  margin: 0 0 .65rem;
  font-size: 1.02rem;
}

.meta {
  margin: 0;
  color: var(--muted);
  font-size: .95rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
  align-items: start;
}

.feature-list {
  padding-left: 1.1rem;
  color: var(--muted);
}

.feature-list li {
  margin-bottom: .55rem;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: .75rem;
  box-shadow: var(--shadow);
  overflow: clip;
}

.faq-item summary {
  cursor: pointer;
  padding: .95rem 1rem;
  font-weight: 700;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:focus-visible {
  outline: 3px solid #9ed6df;
  outline-offset: 2px;
}

.faq-item p {
  margin: 0;
  padding: 0 1rem 1rem;
  color: var(--muted);
}

.faq-chart-wrap {
  display: grid;
  place-items: center;
  gap: .8rem;
  padding: 0 1rem 1rem;
}

.faq-pie-chart {
  width: min(360px, 92%);
  height: auto;
  display: block;
}

.faq-pie-chart .track {
  fill: none;
  stroke: #e3edf1;
  stroke-width: 3.6;
}

.faq-pie-chart .pie-segment {
  fill: none;
  stroke-width: 3.6;
  stroke-linecap: butt;
  stroke-dasharray: var(--slice) calc(100 - var(--slice));
  stroke-dashoffset: calc(-1 * var(--offset));
  animation: pie-reveal .9s ease both;
}

.faq-chart-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: .35rem .9rem;
  width: min(680px, 100%);
}

.faq-chart-legend li {
  display: flex;
  align-items: center;
  gap: .45rem;
  color: var(--muted);
  font-size: .95rem;
}

.faq-chart-dot {
  width: .72rem;
  height: .72rem;
  border-radius: 50%;
  display: inline-block;
  flex: 0 0 .72rem;
}

@keyframes pie-reveal {
  from {
    stroke-dasharray: 0 100;
  }
}

.link-block {
  margin-top: 2rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.form-section {
  margin-top: 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.contact-form {
  margin-top: .6rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .8rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.field label {
  font-weight: 600;
}

.field input,
.field textarea {
  width: 100%;
  font: inherit;
  padding: .7rem .75rem;
  border: 1px solid #c6d7de;
  border-radius: 10px;
  background: #fff;
}

.field textarea {
  resize: vertical;
}

.form-status {
  margin: .7rem 0 0;
  font-weight: 700;
}

.form-status.error {
  color: #b64040;
}

.form-status.success {
  color: #1d7d4f;
}

.btn {
  display: inline-block;
  margin-top: .4rem;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  border-radius: 999px;
  padding: .65rem 1rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.btn:hover,
.btn:focus-visible {
  background: var(--brand-dark);
  text-decoration: none;
}

.btn-ghost {
  background: #fff;
  color: var(--brand-dark);
  border: 1px solid #b9cbd1;
}

.btn-ghost:hover {
  background: #f5fafb;
}

.actions {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
}

.size-note {
  color: var(--muted);
  margin: 1rem 0;
  font-weight: 600;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(17, 35, 45, .45);
  display: grid;
  place-items: center;
  z-index: 50;
  padding: 1rem;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal {
  background: #fff;
  border-radius: var(--radius);
  width: min(620px, 96vw);
  box-shadow: var(--shadow);
  padding: 1.1rem;
  position: relative;
}

.modal-close {
  position: absolute;
  top: .5rem;
  right: .7rem;
  border: none;
  background: transparent;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  color: var(--muted);
}

.concept-image {
  width: 100%;
  max-height: 70vh;
  display: block;
  object-fit: contain;
  border-radius: 10px;
  transform: scale(.94);
  opacity: 0;
  animation: zoomin .28s ease forwards;
}

@keyframes zoomin {
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.cta {
  margin-top: 2rem;
  padding: 1.2rem;
  border-radius: var(--radius);
  background: #e9f4f7;
  border: 1px solid #c7dfe6;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1rem 0;
}

.footer-inner p {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero-grid,
  .split,
  .cards-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .faq-chart-legend {
    grid-template-columns: 1fr;
  }
  .hero-title {
    white-space: normal;
  }
}