:root {
  --bg: #edf1f3;
  --bg-strong: #d7dde0;
  --surface: rgba(255, 255, 255, 0.74);
  --surface-strong: rgba(255, 255, 255, 0.88);
  --surface-dark: linear-gradient(160deg, #20272b 0%, #11181c 100%);
  --text: #0f171b;
  --muted: #4d5b63;
  --line: rgba(17, 24, 28, 0.1);
  --line-strong: rgba(17, 24, 28, 0.18);
  --shadow: 0 20px 70px rgba(16, 24, 29, 0.08);
  --shadow-soft: 0 10px 34px rgba(16, 24, 29, 0.05);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --sidebar-width: 320px;
  --accent: #193e2f;
  --accent-soft: rgba(25, 62, 47, 0.09);
  --ok: #214e3a;
  --alert: #6d2d22;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.82), transparent 32%),
    linear-gradient(180deg, #f4f7f8 0%, var(--bg) 42%, #e4eaed 100%);
}

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

button,
input {
  font: inherit;
}

.site-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 28px 22px 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(244, 247, 248, 0.62)),
    linear-gradient(135deg, rgba(255, 255, 255, 0.35), rgba(212, 221, 225, 0.65));
  border-right: 1px solid var(--line);
  backdrop-filter: blur(18px);
  overflow: auto;
}

.brand-block {
  padding: 14px 8px 18px;
}

.brand {
  display: inline-block;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-subtitle {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.95rem;
}

.sidebar-nav {
  display: grid;
  gap: 8px;
  margin: 14px 0 22px;
}

.sidebar-nav a {
  padding: 13px 14px;
  border-radius: 14px;
  color: var(--text);
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  border: 1px solid transparent;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  background: var(--surface-strong);
  border-color: var(--line);
  transform: translateX(2px);
}

.sidebar-panel {
  margin-top: 14px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.sidebar-panel-muted {
  background: linear-gradient(180deg, rgba(232, 238, 241, 0.85), rgba(255, 255, 255, 0.65));
}

.panel-kicker,
.section-kicker,
.eyebrow,
.status-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.content-wrap {
  min-width: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  padding: 18px 26px 0;
}

.topbar-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 108px;
  padding: 24px 30px 26px 38px;
  border: 1px solid var(--line);
  border-radius: 0 0 30px 30px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.985), rgba(238, 243, 245, 0.955));
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.topbar-curve {
  position: absolute;
  inset: 0 auto auto 0;
  width: 380px;
  height: 126px;
  transform: translateX(-68px);
  border-radius: 0 0 42px 0;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.99), rgba(226, 233, 236, 0.94));
  border-right: 1px solid rgba(17, 24, 28, 0.08);
  border-bottom: 1px solid rgba(17, 24, 28, 0.06);
  pointer-events: none;
}

.topbar h1 {
  position: relative;
  margin: 6px 0 0;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.05;
  max-width: 760px;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line-strong);
  background: var(--surface-strong);
  padding: 11px 16px;
  border-radius: 14px;
  font-weight: 700;
  cursor: pointer;
}

.main-content {
  padding: 28px 26px 56px;
}

.section {
  margin-top: 28px;
}

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

.section-header h2,
.hero-copy h2,
.feature-copy h2,
.card-contact h2 {
  margin: 10px 0 12px;
  font-size: clamp(1.55rem, 2vw, 2.25rem);
  line-height: 1.1;
}

.section-header p,
.hero-copy p,
.feature-copy p,
.card p,
.step-card p,
.sidebar-panel p,
.topbar p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.95fr);
  gap: 18px;
}

.hero-copy {
  min-height: 100%;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  font-weight: 700;
}

.button-primary {
  background: linear-gradient(135deg, #173628, #244d3b);
  color: #f7fbfa;
  border-color: rgba(23, 54, 40, 0.32);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.7);
}

.hero-status-grid {
  display: grid;
  gap: 16px;
}

.card,
.status-card,
.step-card {
  padding: 24px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.88), rgba(244, 248, 250, 0.7));
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.card-hero {
  padding: 30px;
}

.card h3,
.status-card h3,
.step-card h3,
.sidebar-panel h3,
.feature-panel h3 {
  margin: 10px 0 10px;
  font-size: 1.15rem;
  line-height: 1.25;
}

.status-card ul,
.card ul,
.feature-panel ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.status-card-ok {
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.92), rgba(229, 239, 234, 0.86));
  border-color: rgba(33, 78, 58, 0.16);
}

.status-card-alert {
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.92), rgba(244, 229, 225, 0.92));
  border-color: rgba(109, 45, 34, 0.16);
}

.grid {
  display: grid;
  gap: 18px;
}

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

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

.list-clean {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.75;
}

.list-strong li {
  color: rgba(255, 255, 255, 0.84);
}

.mock-search-box {
  margin-top: 22px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.74);
  border-radius: 18px;
  border: 1px solid var(--line);
}

.mock-search-box label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.9rem;
  font-weight: 600;
}

.mock-search-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.mock-search-row input {
  min-width: 0;
  height: 48px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.94);
}

.mock-search-row button {
  height: 48px;
  padding: 0 16px;
  border: 0;
  border-radius: 14px;
  background: var(--text);
  color: #fff;
  font-weight: 700;
}

.section-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.85fr);
  gap: 18px;
}

.card-dark,
.feature-panel {
  background: var(--surface-dark);
  color: #f5f8f8;
  border-color: rgba(255, 255, 255, 0.08);
}

.card-dark p,
.card-dark .panel-kicker,
.feature-panel p {
  color: rgba(255, 255, 255, 0.74);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.step-card {
  min-height: 192px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
}

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

.faq-item {
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  border: 0;
  background: transparent;
  text-align: left;
  font-weight: 700;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.35rem;
  line-height: 1;
  color: var(--muted);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.25s ease;
}

.faq-answer > p {
  overflow: hidden;
  margin: 0;
  padding: 0 22px 0;
  color: var(--muted);
  line-height: 1.7;
}

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

.faq-item.is-open .faq-answer > p {
  padding-bottom: 22px;
}

.faq-item.is-open .faq-icon {
  transform: rotate(45deg);
}

.card-contact {
  min-height: 100%;
}

.contact-block {
  display: grid;
  gap: 4px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.contact-block span {
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 1220px) {
  .hero,
  .section-feature,
  .grid-three,
  .steps-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  :root {
    --anchor-offset: 118px;
    --anchor-gap: 12px;
  }

  .site-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 60;
    width: min(360px, 88vw);
    transform: translateX(-102%);
    transition: transform 0.26s ease;
    box-shadow: 0 20px 80px rgba(16, 24, 29, 0.18);
  }

  body.menu-open .sidebar {
    transform: translateX(0);
  }

  .menu-toggle {
    display: inline-flex;
  }

  .topbar {
    padding: 14px 14px 0;
  }

  .topbar-inner {
    min-height: 92px;
    padding: 18px 18px 20px 22px;
    border-radius: 0 0 24px 24px;
  }

  .topbar-curve {
    width: 220px;
    height: 96px;
    transform: translateX(-42px);
  }

  .main-content {
    padding: 18px 14px 40px;
  }

  .grid-two,
  .hero,
  .section-feature,
  .grid-three,
  .steps-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .topbar h1 {
    font-size: 1.55rem;
  }

  .card,
  .status-card,
  .step-card,
  .card-hero {
    padding: 20px;
  }

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

  .button {
    width: 100%;
  }

  .mock-search-row {
    grid-template-columns: 1fr;
  }
}