:root {
  --sisat-blue-900: #153c57;
  --sisat-blue-800: #1a4b6e;
  --sisat-blue-700: #1f5f8b;
  --sisat-blue-600: #2874a6;
  --sisat-blue-100: #eaf4fa;
  --sisat-green: #2f7d59;
  --sisat-ink: #1f2937;
  --sisat-muted: #5f6f7f;
  --sisat-line: #dbe5ec;
  --sisat-soft: #f5f8fa;
  --sisat-white: #ffffff;
  --sisat-radius-sm: 12px;
  --sisat-radius: 20px;
  --sisat-radius-lg: 30px;
  --sisat-shadow: 0 20px 55px rgba(26, 75, 110, 0.12);
  --sisat-shadow-soft: 0 12px 32px rgba(31, 41, 55, 0.08);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--sisat-ink);
  background: var(--sisat-white);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
}

a {
  color: var(--sisat-blue-700);
}

a:hover {
  color: var(--sisat-blue-900);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2000;
  padding: 0.75rem 1rem;
  color: var(--sisat-white);
  background: var(--sisat-blue-900);
  border-radius: 8px;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1020;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(219, 229, 236, 0.9);
  backdrop-filter: blur(14px);
}

.navbar {
  min-height: 82px;
}

.navbar-brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--sisat-ink);
  text-decoration: none;
}

.navbar-brand img,
.footer-brand img {
  border-radius: 12px;
}

.brand-copy,
.footer-brand span {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-copy strong,
.footer-brand strong {
  font-size: 1.1rem;
}

.brand-copy small,
.footer-brand small {
  margin-top: 0.18rem;
  color: var(--sisat-muted);
  font-size: 0.72rem;
}

.navbar .nav-link {
  color: #334155;
  font-weight: 650;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
  color: var(--sisat-blue-700);
}

.header-actions {
  display: flex;
  gap: 0.65rem;
  margin-left: 1rem;
}

.btn {
  border-radius: 11px;
  font-weight: 700;
}

.btn-primary {
  --bs-btn-bg: var(--sisat-blue-700);
  --bs-btn-border-color: var(--sisat-blue-700);
  --bs-btn-hover-bg: var(--sisat-blue-800);
  --bs-btn-hover-border-color: var(--sisat-blue-800);
  --bs-btn-active-bg: var(--sisat-blue-900);
  --bs-btn-active-border-color: var(--sisat-blue-900);
}

.btn-outline-primary {
  --bs-btn-color: var(--sisat-blue-700);
  --bs-btn-border-color: #9bb9cc;
  --bs-btn-hover-bg: var(--sisat-blue-700);
  --bs-btn-hover-border-color: var(--sisat-blue-700);
}

.hero-section {
  position: relative;
  overflow: hidden;
  padding: 6.5rem 0 4rem;
  background:
    radial-gradient(circle at 86% 12%, rgba(40, 116, 166, 0.13), transparent 31%),
    linear-gradient(180deg, #fbfdfe 0%, #f4f8fb 100%);
}

.hero-section::after {
  position: absolute;
  right: -180px;
  bottom: -260px;
  width: 520px;
  height: 520px;
  content: "";
  border: 90px solid rgba(47, 125, 89, 0.06);
  border-radius: 50%;
}

.hero-section .container {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin-bottom: 1rem;
  color: var(--sisat-blue-700);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-section h1,
.section h2,
.final-cta h2 {
  margin: 0;
  color: var(--sisat-blue-900);
  font-weight: 800;
  letter-spacing: -0.045em;
}

.hero-section h1 {
  max-width: 720px;
  font-size: clamp(3.1rem, 7vw, 5.8rem);
  line-height: 0.98;
}

.hero-section h1 span {
  color: var(--sisat-blue-700);
}

.hero-lead {
  max-width: 680px;
  margin: 1.65rem 0 0;
  color: #425466;
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

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

.hero-actions .btn-light {
  color: var(--sisat-blue-900);
  background: var(--sisat-white);
  border-color: var(--sisat-line);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.1rem;
  margin-top: 1.6rem;
  color: #526272;
  font-size: 0.88rem;
  font-weight: 650;
}

.trust-row span::before {
  margin-right: 0.4rem;
  color: var(--sisat-green);
  content: "✓";
  font-weight: 900;
}

.product-preview {
  overflow: hidden;
  background: var(--sisat-white);
  border: 1px solid rgba(155, 185, 204, 0.65);
  border-radius: var(--sisat-radius-lg);
  box-shadow: var(--sisat-shadow);
  transform: rotate(0.4deg);
}

.preview-topbar,
.preview-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1.2rem;
  color: #64748b;
  font-size: 0.78rem;
}

.preview-topbar > div {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--sisat-ink);
}

.status-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  background: #22a06b;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(34, 160, 107, 0.12);
}

.preview-image-button {
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  background: #eef3f6;
  border: 0;
  border-top: 1px solid var(--sisat-line);
  border-bottom: 1px solid var(--sisat-line);
  cursor: zoom-in;
}

.preview-image-button img {
  display: block;
  width: 100%;
  transition: transform 180ms ease;
}

.preview-image-button:hover img,
.preview-image-button:focus-visible img {
  transform: scale(1.015);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 5rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--sisat-line);
  border-radius: var(--sisat-radius);
  box-shadow: var(--sisat-shadow-soft);
}

.hero-proof div {
  padding: 1.3rem 1.5rem;
}

.hero-proof div + div {
  border-left: 1px solid var(--sisat-line);
}

.hero-proof strong,
.hero-proof span {
  display: block;
}

.hero-proof strong {
  color: var(--sisat-blue-900);
  font-size: 1.08rem;
}

.hero-proof span {
  margin-top: 0.15rem;
  color: var(--sisat-muted);
  font-size: 0.82rem;
}

.section {
  padding: 6rem 0;
}

.section-soft {
  background: var(--sisat-soft);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 3rem;
}

.section-heading h2,
.story-section h2,
.community-card h2 {
  font-size: clamp(2.1rem, 4vw, 3.6rem);
  line-height: 1.08;
}

.section-heading p,
.story-lead,
.community-card p,
.final-cta p {
  margin-top: 1.1rem;
  color: var(--sisat-muted);
  font-size: 1.08rem;
}

.feature-card {
  height: 100%;
  padding: 1.65rem;
  background: var(--sisat-white);
  border: 1px solid var(--sisat-line);
  border-radius: var(--sisat-radius);
  box-shadow: 0 10px 28px rgba(31, 41, 55, 0.04);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.feature-card:hover {
  border-color: #b3cbd9;
  box-shadow: var(--sisat-shadow-soft);
  transform: translateY(-4px);
}

.feature-icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 1.2rem;
  place-items: center;
  color: var(--sisat-blue-700);
  background: var(--sisat-blue-100);
  border-radius: 14px;
}

.feature-icon svg,
.back-to-top svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.feature-card h3 {
  color: var(--sisat-blue-900);
  font-size: 1.22rem;
  font-weight: 800;
}

.feature-card p {
  min-height: 104px;
  color: var(--sisat-muted);
}

.feature-card a {
  font-weight: 750;
  text-decoration: none;
}

.solution-list {
  border-top: 1px solid var(--sisat-line);
}

.solution-row {
  display: grid;
  grid-template-columns: 70px minmax(240px, 1fr) minmax(280px, 1fr);
  gap: 2rem;
  align-items: center;
  padding: 2rem 0;
  border-bottom: 1px solid var(--sisat-line);
}

.solution-number {
  color: #8aa0b1;
  font-size: 0.82rem;
  font-weight: 800;
}

.solution-label {
  color: var(--sisat-green);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.solution-row h3 {
  margin: 0.35rem 0 0;
  color: var(--sisat-blue-900);
  font-size: 1.45rem;
  font-weight: 800;
}

.solution-row p {
  margin: 0;
  color: var(--sisat-muted);
}

.section-action {
  margin-top: 2.5rem;
}

.story-section {
  color: #e9f3f8;
  background: var(--sisat-blue-900);
}

.story-section .eyebrow,
.community-card .eyebrow {
  color: #9fd0eb;
}

.story-section h2 {
  color: var(--sisat-white);
}

.story-section p {
  color: #cadde8;
}

.story-panel {
  position: relative;
  padding: 2.2rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--sisat-radius-lg);
}

.story-panel p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--sisat-white);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.35;
}

.story-quote-mark {
  position: absolute;
  top: -1.25rem;
  left: 1.3rem;
  color: rgba(255, 255, 255, 0.12);
  font-family: Georgia, serif;
  font-size: 8rem;
  line-height: 1;
}

.story-values {
  display: grid;
  gap: 0.8rem;
  margin-top: 2rem;
}

.story-values div {
  padding: 1rem 1.1rem;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 14px;
}

.story-values strong,
.story-values span {
  display: block;
}

.story-values strong {
  color: var(--sisat-white);
}

.story-values span {
  color: #bfd3df;
  font-size: 0.9rem;
}

.onboarding-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.onboarding-step {
  position: relative;
  padding: 1.5rem;
  background: var(--sisat-white);
  border: 1px solid var(--sisat-line);
  border-radius: var(--sisat-radius);
}

.onboarding-step > span {
  display: grid;
  width: 38px;
  height: 38px;
  margin-bottom: 1.1rem;
  place-items: center;
  color: var(--sisat-white);
  background: var(--sisat-blue-700);
  border-radius: 50%;
  font-weight: 800;
}

.onboarding-step h3 {
  color: var(--sisat-blue-900);
  font-size: 1.08rem;
  font-weight: 800;
}

.onboarding-step p {
  margin-bottom: 0;
  color: var(--sisat-muted);
  font-size: 0.92rem;
}

.onboarding-note {
  margin-top: 1rem;
  padding: 1rem 1.2rem;
  color: #496173;
  background: #e8f2f7;
  border-radius: 14px;
  font-size: 0.9rem;
}

.community-section {
  padding-top: 0;
  background: var(--sisat-soft);
}

.community-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
  padding: 3rem;
  color: var(--sisat-white);
  background: linear-gradient(135deg, var(--sisat-blue-800), var(--sisat-blue-700));
  border-radius: var(--sisat-radius-lg);
  box-shadow: var(--sisat-shadow);
}

.community-card h2,
.community-card p {
  color: var(--sisat-white);
}

.community-card p {
  max-width: 750px;
  color: #d9e9f2;
}

.community-actions {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  min-width: 220px;
}

.final-cta {
  padding: 5rem 0;
}

.final-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.final-cta h2 {
  font-size: clamp(2rem, 4vw, 3.3rem);
}

.site-footer {
  padding: 4.5rem 0 1.5rem;
  color: #c4d4df;
  background: #102c40;
}

.footer-main {
  padding-bottom: 2.5rem;
}

.site-footer p {
  max-width: 440px;
  color: #abc0ce;
}

.site-footer h2 {
  margin-bottom: 1rem;
  color: var(--sisat-white);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer li + li {
  margin-top: 0.45rem;
}

.site-footer a {
  color: #c6d8e3;
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus {
  color: var(--sisat-white);
}

.footer-brand {
  margin-bottom: 1rem;
  color: var(--sisat-white);
}

.footer-brand small {
  color: #9eb6c5;
}

.acknowledgement {
  padding: 1.4rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.acknowledgement p {
  max-width: none;
  margin: 0.45rem 0 0;
  font-size: 0.85rem;
}

.footer-bottom {
  padding-top: 1.4rem;
  color: #8fa8b8;
  font-size: 0.8rem;
}

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 1030;
  display: grid;
  width: 46px;
  height: 46px;
  padding: 0;
  place-items: center;
  color: var(--sisat-white);
  visibility: hidden;
  background: var(--sisat-blue-700);
  border: 0;
  border-radius: 50%;
  box-shadow: 0 10px 24px rgba(21, 60, 87, 0.28);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
}

.back-to-top.is-visible {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.preview-modal {
  overflow: hidden;
  border: 0;
  border-radius: var(--sisat-radius);
  box-shadow: var(--sisat-shadow);
}

@media (max-width: 1199.98px) {
  .hero-section {
    padding-top: 5rem;
  }

  .header-actions {
    margin-top: 1rem;
    margin-left: 0;
  }
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    padding: 1rem 0 1.25rem;
  }

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

  .header-actions .btn {
    width: 100%;
  }

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

  .hero-proof div:nth-child(3) {
    border-left: 0;
  }

  .hero-proof div:nth-child(n+3) {
    border-top: 1px solid var(--sisat-line);
  }

  .solution-row {
    grid-template-columns: 52px 1fr;
  }

  .solution-row p {
    grid-column: 2;
  }

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

  .community-card {
    grid-template-columns: 1fr;
  }

  .community-actions {
    flex-direction: row;
    min-width: 0;
  }
}

@media (max-width: 767.98px) {
  .brand-copy small {
    display: none;
  }

  .hero-section {
    padding: 4rem 0 3rem;
  }

  .hero-section h1 {
    font-size: clamp(2.8rem, 14vw, 4.2rem);
  }

  .hero-actions,
  .hero-actions .btn,
  .community-actions,
  .community-actions .btn {
    width: 100%;
  }

  .preview-topbar,
  .preview-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-proof {
    grid-template-columns: 1fr;
    margin-top: 3rem;
  }

  .hero-proof div + div {
    border-top: 1px solid var(--sisat-line);
    border-left: 0;
  }

  .section {
    padding: 4.5rem 0;
  }

  .feature-card p {
    min-height: 0;
  }

  .solution-row {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }

  .solution-row p {
    grid-column: auto;
  }

  .onboarding-grid {
    grid-template-columns: 1fr;
  }

  .community-card {
    padding: 2rem 1.4rem;
  }

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

  .final-cta-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .final-cta-inner .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}