:root {
  color-scheme: light;
  --ink: #0f172a;
  --muted: #475569;
  --line: #dbe3ea;
  --panel: #ffffff;
  --soft: #f5f8fb;
  --cyan: #05758a;
  --cyan-dark: #045b6b;
  --red: #d63131;
  --amber: #f5b544;
  --shadow: 0 22px 55px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid rgba(219, 227, 234, 0.88);
  background: rgba(255, 255, 255, 0.94);
  padding: 10px clamp(18px, 4vw, 64px);
  backdrop-filter: blur(16px);
}

.brand img {
  height: 62px;
  width: auto;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 34px);
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
}

.top-nav a,
.login-link,
.secondary-action {
  transition: border-color 160ms ease, color 160ms ease, background 160ms ease;
}

.top-nav a:hover,
.top-nav a[aria-current="page"] {
  color: var(--cyan);
}

.login-link,
.secondary-action {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-weight: 800;
  padding: 12px 16px;
}

.login-link:hover,
.secondary-action:hover {
  border-color: var(--cyan);
  color: var(--cyan-dark);
}

.hero {
  display: grid;
  min-height: calc(100vh - 82px);
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(44px, 7vw, 96px) clamp(18px, 4vw, 64px) clamp(32px, 5vw, 60px);
}

.hero-content {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(3rem, 8vw, 6.2rem);
  line-height: 0.94;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.02;
}

h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.hero-copy,
.section-heading p,
.operation-band p,
.contact-copy p,
.cta-section p {
  color: var(--muted);
  font-size: clamp(1.02rem, 2vw, 1.22rem);
}

.hero-copy {
  max-width: 620px;
  margin: 24px 0 0;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.primary-action {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  background: var(--cyan);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  padding: 13px 18px;
  transition: background 160ms ease, transform 160ms ease;
}

.primary-action:hover {
  background: var(--cyan-dark);
  transform: translateY(-1px);
}

.system-panel {
  border: 1px solid rgba(219, 227, 234, 0.9);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: clamp(18px, 3vw, 30px);
}

.panel-head,
.site-footer,
.cta-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.panel-head span,
.metric-grid span,
.flow-list span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.panel-head strong {
  color: var(--cyan-dark);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.metric-grid div,
.feature-grid article,
.contact-form {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.metric-grid div {
  min-height: 118px;
  padding: 18px;
}

.metric-grid strong {
  display: block;
  margin-top: 12px;
  font-size: clamp(1.8rem, 4vw, 2.55rem);
  line-height: 1;
}

.flow-list {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.flow-list span {
  border-left: 4px solid var(--amber);
  background: #fff7e6;
  padding: 12px 14px;
}

.section,
.operation-band,
.cta-section,
.contact-layout {
  padding: clamp(54px, 7vw, 96px) clamp(18px, 4vw, 64px);
}

.section-heading {
  max-width: 840px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.feature-grid article {
  min-height: 210px;
  padding: 24px;
}

.feature-grid p {
  margin: 0;
  color: var(--muted);
}

.operation-band {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 0.65fr);
  gap: clamp(24px, 5vw, 64px);
  background: var(--ink);
  color: #fff;
}

.operation-band p {
  color: #cbd5e1;
}

.steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: flex;
  min-height: 64px;
  align-items: center;
  gap: 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  padding: 14px 16px;
  font-weight: 800;
}

.steps span {
  color: var(--amber);
  font-size: 0.9rem;
}

.cta-section {
  background: #fff;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 22px clamp(18px, 4vw, 64px);
}

.site-footer a {
  color: var(--cyan-dark);
}

.contact-layout {
  display: grid;
  min-height: calc(100vh - 82px);
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 0.7fr);
  align-items: start;
  gap: clamp(28px, 5vw, 72px);
}

.contact-copy {
  max-width: 680px;
  padding-top: clamp(18px, 5vw, 58px);
}

.contact-copy h1 {
  font-size: clamp(2.6rem, 6vw, 5.2rem);
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: clamp(20px, 4vw, 34px);
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  gap: 8px;
}

.form-row label {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 900;
}

.form-row input,
.form-row textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  padding: 13px 14px;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.captcha-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbfd;
  padding: 14px;
}

.captcha-refresh {
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  padding: 12px 14px;
}

.captcha-refresh:hover {
  border-color: var(--cyan);
  color: var(--cyan-dark);
}

.captcha-refresh:disabled,
.submit-button:disabled {
  cursor: wait;
  opacity: 0.68;
}

.form-row textarea {
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(5, 117, 138, 0.13);
}

.hidden-field {
  position: absolute;
  left: -10000px;
  opacity: 0;
}

.submit-button {
  width: 100%;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 800;
}

.form-status.success {
  color: #047857;
}

.form-status.error {
  color: var(--red);
}

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .top-nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  .hero,
  .operation-band,
  .contact-layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 620px) {
  .site-header {
    gap: 12px;
  }

  .brand img {
    height: 54px;
  }

  .login-link {
    padding: 10px 12px;
  }

  .hero {
    min-height: auto;
  }

  .hero-actions,
  .cta-actions,
  .cta-section,
  .panel-head,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .feature-grid,
  .metric-grid,
  .captcha-box {
    grid-template-columns: 1fr;
  }
}