:root {
  --bg: #f7f7f8;
  --bg-alt: #ffffff;
  --border: #e0e0e5;
  --text-main: #111111;
  --text-muted: #666a73;
  --accent: #111111;
  --accent-soft: #e5e5ea;
  --danger: #b3261e;
  --radius: 10px;
  --shadow-soft: 0 14px 40px rgba(0, 0, 0, 0.04);
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  color: var(--text-main);
  background: var(--bg);
}

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

.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */

.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.logo {
  font-weight: 600;
  letter-spacing: 0.03em;
  font-size: 14px;
  text-transform: uppercase;
}

.nav a {
  margin-left: 18px;
  font-size: 14px;
  color: var(--text-muted);
}

.nav a.active {
  color: var(--text-main);
  font-weight: 500;
}

/* Hero */

.hero {
  padding: 64px 0 40px;
}

.hero-subtitle {
  max-width: 520px;
  color: var(--text-muted);
  margin-top: 8px;
}

.hero h1 {
  font-size: 32px;
  margin: 0;
}

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

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  cursor: pointer;
  background: transparent;
}

.btn.primary {
  background: var(--accent);
  color: #ffffff;
}

.btn.secondary {
  border-color: var(--border);
  background: #ffffff;
  color: var(--text-main);
}

/* Cards & layout */

.grid-section {
  padding: 16px 0 56px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 18px 18px 20px;
  box-shadow: var(--shadow-soft);
}

.card h2 {
  margin-top: 0;
  font-size: 18px;
}

.card p {
  margin-bottom: 10px;
  color: var(--text-muted);
}

.link-arrow {
  font-size: 14px;
  color: var(--text-main);
}

/* Page headers */

.page-header {
  padding: 40px 0 16px;
}

.page-header h1 {
  margin: 0 0 8px;
}

.page-header p {
  margin: 0;
  color: var(--text-muted);
}

/* Forms */

.form-section {
  padding: 8px 0 56px;
}

.form-card {
  max-width: 640px;
  margin: 0 auto;
}

.form-label {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
  margin-top: 14px;
}

.form-input {
  width: 100%;
  padding: 9px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
  font-family: var(--font-main);
}

textarea.form-input {
  resize: vertical;
}

.divider-text {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin: 14px 0 4px;
}

.result-box {
  margin-top: 16px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fafafa;
  font-size: 13px;
}

/* Dashboard */

.dashboard-grid {
  padding: 8px 0 56px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr);
  gap: 18px;
}

.kpi-card {
  text-align: left;
}

.kpi-number {
  font-size: 26px;
  margin: 6px 0 2px;
}

.kpi-caption {
  font-size: 12px;
  color: var(--text-muted);
}

.activity-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
  font-size: 13px;
}

.activity-list li + li {
  margin-top: 6px;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  background: #ffffff;
}

.footer-inner {
  padding: 14px 0;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

.footer-note {
  opacity: 0.8;
}

/* Responsive */

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .hero {
    padding-top: 40px;
  }

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

  .footer-inner {
    flex-direction: column;
    gap: 4px;
  }
}