:root {
  --color-ink: #0f172a;
  --color-body: #475569;
  --color-muted: #64748b;
  --color-line: #dbe7e5;
  --color-bg: #f7fbfa;
  --color-surface: #ffffff;
  --color-primary: #0f766e;
  --color-primary-dark: #115e59;
  --color-primary-soft: #ccfbf1;
  --color-accent: #2563eb;
  --shadow-soft: 0 24px 70px rgba(15, 23, 42, 0.12);
  --shadow-card: 0 16px 42px rgba(15, 118, 110, 0.11);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-body);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.12), transparent 32rem),
    linear-gradient(180deg, #f8fffd 0%, #ffffff 44%, #f7fbfa 100%);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
}

body.nav-open {
  overflow: hidden;
}

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

button,
input,
textarea {
  font: inherit;
}

img,
svg {
  max-width: 100%;
}

.container {
  width: min(100% - 40px, var(--container));
  margin: 0 auto;
}

.narrow {
  max-width: 860px;
}

.section {
  padding: 96px 0;
}

.section-muted {
  background: rgba(241, 250, 248, 0.78);
  border-block: 1px solid rgba(15, 118, 110, 0.08);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(248, 255, 253, 0.86);
  border-bottom: 1px solid rgba(15, 118, 110, 0.09);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 40px, var(--container));
  min-height: 76px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-ink);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary), #0ea5e9);
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(15, 118, 110, 0.28);
}

.brand-text {
  font-size: 18px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-menu a {
  color: #334155;
  font-size: 15px;
  font-weight: 700;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--color-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 18px;
  color: #fff !important;
  background: var(--color-primary);
  border-radius: 999px;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background: var(--color-primary-dark);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: 14px;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--color-ink);
  border-radius: 999px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  padding-top: 86px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
  gap: 64px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--color-ink);
  line-height: 1.16;
}

h1 {
  max-width: 820px;
  font-size: clamp(42px, 6vw, 72px);
  letter-spacing: -0.055em;
}

h2 {
  font-size: clamp(30px, 4vw, 46px);
  letter-spacing: -0.045em;
}

h3 {
  font-size: 20px;
  letter-spacing: -0.02em;
}

p {
  margin: 0;
}

.hero-lead {
  max-width: 740px;
  margin-top: 24px;
  color: #334155;
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary), #0ea5e9);
  box-shadow: 0 18px 36px rgba(15, 118, 110, 0.24);
}

.btn-secondary {
  color: var(--color-ink);
  background: rgba(255, 255, 255, 0.84);
  border-color: var(--color-line);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 30px 0 0;
  list-style: none;
}

.hero-tags li {
  padding: 8px 13px;
  color: var(--color-primary-dark);
  background: rgba(204, 251, 241, 0.7);
  border: 1px solid rgba(15, 118, 110, 0.13);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}

.hero-card {
  position: relative;
  padding: 28px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(15, 118, 110, 0.13);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.hero-card::before {
  position: absolute;
  inset: auto -38px -64px auto;
  width: 180px;
  height: 180px;
  content: "";
  background: rgba(14, 165, 233, 0.16);
  border-radius: 999px;
}

.hero-card-header,
.hero-card-footer {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--color-muted);
  font-weight: 800;
}

.status-dot {
  width: 12px;
  height: 12px;
  background: #22c55e;
  border-radius: 999px;
  box-shadow: 0 0 0 7px rgba(34, 197, 94, 0.16);
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 32px;
}

.metric-row div {
  padding: 20px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
}

.metric-row strong {
  display: block;
  color: var(--color-primary);
  font-size: 28px;
  line-height: 1;
}

.metric-row span {
  display: block;
  margin-top: 10px;
  color: var(--color-ink);
  font-weight: 800;
}

.dashboard-preview {
  display: flex;
  align-items: end;
  gap: 14px;
  min-height: 210px;
  padding: 28px 22px;
  margin: 18px 0;
  background:
    linear-gradient(rgba(15, 118, 110, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 118, 110, 0.08) 1px, transparent 1px),
    #f8fffd;
  background-size: 34px 34px;
  border: 1px solid rgba(15, 118, 110, 0.13);
  border-radius: var(--radius-md);
}

.bar {
  flex: 1;
  min-width: 32px;
  background: linear-gradient(180deg, #0ea5e9, var(--color-primary));
  border-radius: 16px 16px 8px 8px;
}

.bar-1 { height: 42%; }
.bar-2 { height: 74%; }
.bar-3 { height: 58%; }
.bar-4 { height: 88%; }

.hero-card-footer strong {
  color: var(--color-ink);
  text-align: right;
}

.trust-strip {
  padding: 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(15, 118, 110, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transform: translateY(-28px);
}

.trust-grid div {
  padding: 24px;
  border-right: 1px solid #e2e8f0;
}

.trust-grid div:last-child {
  border-right: 0;
}

.trust-grid strong,
.trust-grid span {
  display: block;
}

.trust-grid strong {
  color: var(--color-ink);
  font-size: 18px;
}

.trust-grid span {
  margin-top: 6px;
  color: var(--color-muted);
  font-size: 14px;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 46px;
  text-align: center;
}

.section-heading p:last-child {
  margin-top: 16px;
  font-size: 18px;
}

.align-left {
  margin: 0;
  text-align: left;
}

.card-grid {
  display: grid;
  gap: 22px;
}

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

.service-card,
.feature-card,
.solution-list article,
.timeline article,
.faq-item {
  background: var(--color-surface);
  border: 1px solid rgba(15, 118, 110, 0.1);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 38px rgba(15, 23, 42, 0.05);
}

.service-card {
  padding: 30px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 24px;
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  border-radius: 16px;
  font-weight: 900;
}

.service-card p,
.feature-card p,
.solution-list p,
.timeline p {
  margin-top: 14px;
}

.split-layout {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 56px;
  align-items: start;
}

.solution-list {
  display: grid;
  gap: 18px;
}

.solution-list article {
  padding: 26px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card {
  padding: 30px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.timeline article {
  position: relative;
  padding: 30px;
}

.timeline span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 22px;
  color: #fff;
  background: var(--color-primary);
  border-radius: 999px;
  font-weight: 900;
}

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

.faq-item {
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 20px;
  padding: 22px 24px;
  color: var(--color-ink);
  background: transparent;
  border: 0;
  cursor: pointer;
  font-weight: 900;
  text-align: left;
}

.faq-icon {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: 999px;
  transition: transform 0.2s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.22s ease;
}

.faq-answer p {
  min-height: 0;
  padding: 0 24px;
  overflow: hidden;
}

.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-item.is-open .faq-answer p {
  padding-bottom: 24px;
}

.contact-section {
  padding-bottom: 112px;
}

.contact-card {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: 46px;
  padding: 46px;
  color: rgba(255, 255, 255, 0.82);
  background:
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.4), transparent 28rem),
    linear-gradient(135deg, #0f172a, #115e59);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.contact-card h2,
.contact-card .eyebrow {
  color: #fff;
}

.contact-card > div > p:not(.eyebrow) {
  margin-top: 18px;
  font-size: 18px;
}

.contact-methods {
  display: grid;
  gap: 10px;
  margin-top: 28px;
  color: #fff;
  font-weight: 800;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  color: var(--color-ink);
  background: rgba(255, 255, 255, 0.96);
  border-radius: var(--radius-md);
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 13px 14px;
  color: var(--color-ink);
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 14px;
  outline: none;
  resize: vertical;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12);
}

.contact-form .is-invalid {
  border-color: #dc2626;
  box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.12);
}

.form-status {
  min-height: 24px;
  color: var(--color-primary-dark);
  font-weight: 800;
}

.site-footer {
  padding: 56px 0 24px;
  color: #cbd5e1;
  background: #0f172a;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 0.8fr;
  gap: 40px;
}

.footer-brand {
  color: #fff;
  margin-bottom: 16px;
}

.site-footer h2 {
  margin-bottom: 14px;
  color: #fff;
  font-size: 16px;
  letter-spacing: 0;
}

.site-footer a {
  color: #e0f2fe;
}

.muted {
  color: #94a3b8;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-top: 28px;
  margin-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 14px;
}

@media (max-width: 980px) {
  .section {
    padding: 76px 0;
  }

  .hero-grid,
  .split-layout,
  .contact-card {
    grid-template-columns: 1fr;
  }

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

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

  .trust-grid div:nth-child(2) {
    border-right: 0;
  }

  .trust-grid div:nth-child(-n + 2) {
    border-bottom: 1px solid #e2e8f0;
  }

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

@media (max-width: 760px) {
  .container,
  .nav {
    width: min(100% - 28px, var(--container));
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    inset: 76px 14px auto;
    display: grid;
    gap: 8px;
    padding: 18px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--color-line);
    border-radius: 22px;
    box-shadow: var(--shadow-soft);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav-menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-menu a {
    display: block;
    padding: 12px 14px;
  }

  .nav-cta {
    justify-content: center;
  }

  .hero {
    padding-top: 58px;
  }

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

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

  .hero-card {
    padding: 22px;
  }

  .metric-row,
  .services-grid,
  .feature-grid,
  .timeline,
  .trust-grid,
  .footer-bottom {
    grid-template-columns: 1fr;
  }

  .trust-grid div {
    border-right: 0;
    border-bottom: 1px solid #e2e8f0;
  }

  .trust-grid div:last-child {
    border-bottom: 0;
  }

  .section-heading {
    text-align: left;
  }

  .contact-card {
    padding: 28px;
  }

  .contact-form {
    padding: 18px;
  }

  .footer-bottom {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}