:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --soft: #eef4f3;
  --line: #d8e1ea;
  --text: #111827;
  --muted: #64748b;
  --blue: #16456a;
  --teal: #0f766e;
  --amber: #a16207;
  --red: #b42318;
  --green: #15803d;
  --shadow: 0 22px 60px rgba(15, 23, 42, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.38) 46%),
    linear-gradient(135deg, rgba(15, 118, 110, 0.12), rgba(22, 69, 106, 0.08) 50%, rgba(161, 98, 7, 0.07)),
    var(--bg);
  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;
}

button,
input,
select,
textarea {
  font: inherit;
}

.shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid rgba(82, 109, 136, 0.22);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 850;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: white;
  box-shadow: 0 14px 28px rgba(7, 22, 43, 0.16);
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 800;
}

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

.primary,
.secondary {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0 15px;
  font-weight: 850;
}

.primary {
  color: #f8fbff;
  background: var(--blue);
  box-shadow: 0 10px 22px rgba(22, 69, 106, 0.18);
}

.secondary {
  color: var(--text);
  background: var(--surface);
  border-color: var(--line);
}

.hero {
  min-height: min(760px, calc(100vh - 108px));
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(430px, 0.8fr);
  gap: 42px;
  align-items: center;
  padding: 54px 0 70px;
}

.hero h1 {
  max-width: 840px;
  margin: 0;
  font-size: clamp(2.7rem, 6.5vw, 5.1rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.lead {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.2rem;
  font-weight: 620;
}

.actions,
.proof {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.proof span {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(82, 109, 136, 0.24);
  border-radius: 8px;
  padding: 0 11px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.note {
  max-width: 690px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.93rem;
  font-weight: 650;
}

.panel,
.case-panel {
  display: grid;
  gap: 10px;
  border: 1px solid rgba(82, 109, 136, 0.24);
  border-radius: 8px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.panel-head,
.system-row,
.metric-row {
  display: grid;
  gap: 5px;
  border: 1px solid rgba(82, 109, 136, 0.18);
  border-radius: 8px;
  padding: 12px;
  background: var(--soft);
}

.panel-head span {
  color: var(--teal);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.84rem;
  font-weight: 850;
}

.panel-head strong {
  font-size: 1.2rem;
}

.system-row {
  grid-template-columns: minmax(128px, 0.56fr) 74px minmax(0, 1fr);
  align-items: center;
}

.system-row span {
  font-weight: 850;
}

.system-row strong {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-size: 0.78rem;
}

.system-row strong::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: currentColor;
}

.system-row strong.green {
  color: var(--green);
  border-color: rgba(34, 197, 94, 0.38);
}

.system-row strong.yellow {
  color: var(--amber);
  border-color: rgba(245, 158, 11, 0.38);
}

.system-row strong.red {
  color: var(--red);
  border-color: rgba(248, 113, 113, 0.38);
}

.system-row small {
  color: var(--muted);
  font-weight: 700;
}

section {
  padding: 42px 0;
  border-top: 1px solid rgba(82, 109, 136, 0.18);
}

.section-head {
  max-width: 840px;
  margin-bottom: 18px;
}

section h2,
.contact h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
}

.section-head p,
.contact p {
  margin: 10px 0 0;
  color: var(--muted);
  font-weight: 620;
}

.grid,
.metrics,
.fit-grid,
.output-grid,
.security-list {
  display: grid;
  gap: 14px;
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.card,
.list-panel,
.output-grid li,
.security-list li,
.faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.card {
  min-height: 148px;
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 18px;
}

.card.step {
  min-height: 274px;
}

.card span {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(15, 118, 110, 0.12);
  color: var(--teal);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 850;
}

.card h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.3;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-weight: 620;
}

.list-panel {
  padding: 20px;
}

.list-panel h3 {
  margin: 0 0 12px;
}

.list-panel ul,
.output-grid,
.security-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.list-panel li,
.output-grid li,
.security-list li {
  position: relative;
  padding-left: 26px;
  font-weight: 650;
}

.list-panel li + li {
  margin-top: 8px;
}

.list-panel li::before,
.output-grid li::before,
.security-list li::before {
  position: absolute;
  left: 0;
  font-weight: 900;
}

.list-panel.good li::before,
.output-grid li::before,
.security-list li::before {
  content: "✓";
  color: var(--green);
}

.list-panel.bad li::before {
  content: "×";
  color: var(--red);
}

.output-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.output-grid li,
.security-list li {
  min-height: 58px;
  display: flex;
  align-items: center;
  padding: 12px 14px 12px 40px;
}

.metrics {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-bottom: 16px;
}

.metric-row strong {
  font-size: 1.52rem;
  line-height: 1;
}

.metric-row span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}

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

.note-panel,
.contact {
  border: 1px solid rgba(31, 111, 178, 0.3);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
  padding: 26px;
}

.note-panel {
  border-left-width: 4px;
}

.note-panel p {
  max-width: 880px;
  margin: 10px 0 0;
  color: var(--muted);
  font-weight: 620;
}

.faq {
  display: grid;
  gap: 10px;
}

.faq details {
  padding: 4px 16px;
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 0;
  font-weight: 780;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

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

.faq summary::after {
  content: "+";
  color: var(--teal);
  font-size: 1.3rem;
  font-weight: 800;
}

.faq details[open] summary::after {
  content: "–";
}

.faq p {
  margin: 0 0 14px;
  color: var(--muted);
  font-weight: 620;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: 28px;
  border-color: rgba(15, 118, 110, 0.28);
}

.lead-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.lead-form label,
.lead-form fieldset {
  display: grid;
  gap: 6px;
  margin: 0;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 780;
}

.lead-form input,
.lead-form select,
.lead-form textarea {
  min-height: 44px;
  width: 100%;
  border: 1px solid rgba(82, 109, 136, 0.34);
  border-radius: 8px;
  background: white;
  color: var(--text);
  padding: 10px 12px;
}

.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  outline: 2px solid var(--teal);
  outline-offset: 1px;
}

.lead-form fieldset {
  grid-column: 1 / -1;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid rgba(82, 109, 136, 0.24);
  border-radius: 8px;
  padding: 14px;
}

.lead-form legend {
  grid-column: 1 / -1;
  padding: 0 6px;
}

.lead-form fieldset label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 650;
}

.lead-form input[type="checkbox"] {
  min-height: 0;
  width: 18px;
  height: 18px;
  accent-color: var(--teal);
}

.lead-form .full {
  grid-column: 1 / -1;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 620;
}

.site-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(82, 109, 136, 0.2);
  padding: 28px 0 42px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
}

.site-footer strong {
  color: var(--text);
}

.site-footer p {
  max-width: 560px;
  margin: 6px 0 0;
}

@media (max-width: 1080px) {
  .hero,
  .contact {
    grid-template-columns: 1fr;
  }

  .grid.four,
  .grid.three,
  .output-grid,
  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 24px, 1180px);
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  nav {
    justify-content: flex-start;
  }

  .hero {
    padding: 40px 0 52px;
  }

  .hero h1 {
    font-size: clamp(2.25rem, 12vw, 3.6rem);
  }

  .actions,
  .primary,
  .secondary {
    width: 100%;
  }

  .grid.four,
  .grid.three,
  .grid.two,
  .fit-grid,
  .output-grid,
  .metrics,
  .security-list,
  .lead-form,
  .lead-form fieldset {
    grid-template-columns: 1fr;
  }

  .system-row {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "name status"
      "detail detail";
  }

  .system-row span {
    grid-area: name;
  }

  .system-row strong {
    grid-area: status;
  }

  .system-row small {
    grid-area: detail;
  }

  .card.step {
    min-height: 0;
  }

  .contact,
  .note-panel {
    padding: 20px;
  }
}