* {
  box-sizing: border-box;
}

:root {
  --bg: #f8fafc;
  --panel: #ffffff;
  --text: #172033;
  --muted: #526073;
  --muted-light: #65728d;
  --line: #d8e0ee;
  --primary: #315eff;
  --primary-dark: #1b3dae;
  --primary-soft: #eef2ff;
  --secondary: #eef5f8;
  --success: #1f9d73;
  --danger: #d44a4a;
  --warning: #faf6e9;
  --shadow: rgba(34, 48, 84, 0.12);
  --font: Inter, "Segoe UI", Roboto, Arial, sans-serif;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--font);
  line-height: 1.6;
}

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

.container {
  width: min(1180px, calc(100vw - 80px));
  margin: 0 auto;
}

.site-header {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 24px;
}

.brand {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-link {
  color: var(--muted);
  font-size: 0.93rem;
  font-weight: 600;
  padding: 8px 11px;
  border-radius: 8px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: var(--primary-soft);
}

.hero {
  padding: 56px 0 34px;
  background: radial-gradient(circle at 75% center, #eef2ff 0%, transparent 30%), var(--bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(560px, 1.1fr) minmax(360px, 0.9fr);
  align-items: center;
  gap: 44px;
}

.hero-copy h1 {
  font-size: clamp(3rem, 4vw, 4.5rem);
  line-height: 1.08;
  max-width: 680px;
  margin: 16px 0 18px;
  color: var(--text);
  letter-spacing: -0.045em;
}

.hero-text {
  color: var(--muted);
  font-size: 1.16rem;
  max-width: 640px;
}

.section-tag {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.76rem;
  font-weight: 800;
  color: var(--primary);
}

.hero-actions {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 10px;
  font-weight: 800;
  font-size: 0.95rem;
  transition: 180ms ease;
}

.btn.primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 12px 30px var(--shadow);
}

.btn.secondary {
  background: var(--panel);
  color: var(--primary);
  border: 1px solid var(--line);
}

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

.hero-proof {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 30px;
}

.hero-proof span {
  font-size: 0.94rem;
  color: var(--muted);
}

.hero-proof strong {
  color: var(--text);
  font-size: 1.12rem;
}

.hero-card {
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-window {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 20px 80px var(--shadow);
  overflow: hidden;
  width: min(420px, 100%);
}

.window-bar {
  background: #eef2f8;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 8px;
  align-items: center;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

.dot.red {background: #ec6b66;}
.dot.amber {background: #f7b857;}
.dot.green {background: #68b587;}

.window-title {
  margin-left: 14px;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.82rem;
}

.window-content {
  padding: 16px 20px;
  min-height: 260px;
  background: #171d2b;
  color: #d9e7ff;
}

.window-content pre {
  white-space: pre-wrap;
  font-family: "Courier New", monospace;
  font-size: 1rem;
  margin: 0;
}

.status-row {
  background: var(--panel);
  padding: 14px 16px;
  display: flex;
  gap: 10px;
}

.chip {
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 700;
  border-radius: 999px;
  background: var(--secondary);
  padding: 6px 12px;
}

.chip.success {
  color: var(--success);
  background: #dffcf4;
}

.tools-section {
  padding: 36px 0 56px;
}

.section-heading.centered {
  text-align: center;
}

.section-heading h2 {
  font-size: clamp(2rem, 2.8vw, 2.8rem);
  margin: 12px 0 24px;
  letter-spacing: -0.03em;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(180px, 1fr));
  gap: 16px;
  align-items: stretch;
}

.tool-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px 20px;
  box-shadow: 0 8px 20px transparent;
  transition: 240ms ease;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px var(--shadow);
  border-color: var(--primary);
}

.tool-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 1.2rem;
  font-weight: 800;
}

.tool-card h3 {
  font-size: 1.03rem;
  margin: 16px 0 8px;
}

.tool-card p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.tool-link {
  color: var(--primary);
  font-weight: 800;
  font-size: 0.82rem;
}

.feature-band {
  background: var(--secondary);
  padding: 40px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(190px, 1fr));
  gap: 20px;
}

.feature {
  display: flex;
  gap: 14px;
  align-items: center;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.feature-icon {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  background: var(--panel);
  border-radius: 50%;
}

.site-footer {
  background: var(--text);
  color: var(--panel);
  padding: 34px 0;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  color: var(--panel);
}

.footer-copy {
  color: var(--line);
  margin: 8px 0 0;
}

.footer-links {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--line);
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--panel);
}

.page-shell {
  min-height: 520px;
  padding: 44px 0 88px;
}

.ad-wrap {
  margin-top: 28px;
}

.ad-slot {
  background: linear-gradient(135deg, rgba(49, 94, 255, 0.04), rgba(49, 94, 255, 0.12));
  border: 1px dashed var(--line);
  border-radius: 16px;
  min-height: 120px;
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.ad-slot ins.adsbygoogle {
  display: block !important;
  width: 100%;
  min-height: 90px;
}

.page-title {
  font-size: clamp(2.2rem, 3vw, 3rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 10px;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.95fr) minmax(420px, 1.05fr);
  gap: 28px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 24px var(--shadow);
}

.page-intro {
  color: var(--muted);
  font-size: 1rem;
}

.tool-info {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(260px, 0.8fr);
  gap: 28px;
  margin-top: 28px;
}

.info-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 24px var(--shadow);
}

.info-panel h2,
.info-panel h3 {
  margin-top: 10px;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.info-panel p,
.info-panel li {
  color: var(--muted);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 22px;
  margin-top: 20px;
}

.example-block {
  margin: 0;
  padding: 16px;
  border-radius: 10px;
  background: #171d2b;
  color: #d9e7ff;
  font-family: "Courier New", monospace;
  white-space: pre-wrap;
  line-height: 1.6;
}

.related-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.related-list a {
  color: var(--primary);
  font-weight: 700;
}

.sidebar-panel h3 + p {
  margin-top: 0;
}

.form-label {
  display: block;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.84rem;
  margin-bottom: 8px;
}

textarea,
input,
select {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 10px;
  padding: 12px 14px;
  font-family: var(--font);
  font-size: 0.96rem;
}

textarea {
  min-height: 260px;
  resize: vertical;
}

.controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.btn-tool {
  border: none;
  cursor: pointer;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  min-height: 42px;
  padding: 0 20px;
  font-weight: 800;
}

.btn-tool.secondary {
  background: var(--secondary);
  color: var(--text);
}

.output {
  min-height: 260px;
}

@media (max-width: 980px) {
  .hero-grid,
  .page-grid,
  .tool-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    font-size: 2.8rem;
  }

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

  .nav-wrap,
  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }
}