:root {
  --color-primary: #6949ff;
  --color-primary-dark: #5538e0;
  --color-text: #1a1a1a;
  --color-muted: #6b7280;
  --color-bg: #ffffff;
  --color-card-bg: #f9fafb;
  --color-border: #e5e7eb;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Nunito", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container { max-width: 820px; margin: 0 auto; padding: 0 24px; }

.header {
  border-bottom: 1px solid var(--color-border);
  padding: 14px 0;
  background: white;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.95);
}

.header-content { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand-icon {
  width: 32px; height: 32px;
  background: var(--color-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}

.lang-switcher { display: flex; gap: 4px; }

.lang-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--color-muted);
  transition: all 0.15s ease;
  font-family: inherit;
}

.lang-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.lang-btn.active { background: var(--color-primary); color: white; border-color: var(--color-primary); }

main { padding: 48px 0 80px; min-height: 60vh; }

h1 { font-size: 36px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.025em; line-height: 1.2; }
h2 { font-size: 24px; font-weight: 700; margin-top: 48px; margin-bottom: 14px; letter-spacing: -0.015em; line-height: 1.3; }
h3 { font-size: 18px; font-weight: 700; margin-top: 28px; margin-bottom: 10px; }

p, ul, ol { margin-bottom: 18px; color: var(--color-text); }
ul, ol { padding-left: 24px; }
li { margin-bottom: 8px; line-height: 1.6; }

a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }
a:hover { text-decoration: none; }

strong { font-weight: 700; }

.meta {
  color: var(--color-muted);
  font-size: 14px;
  margin-bottom: 36px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.lang-content { display: none; }
.lang-content.active { display: block; }

.info-box {
  background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
  border-left: 4px solid var(--color-primary);
  padding: 16px 20px;
  border-radius: 8px;
  margin: 24px 0;
}

.warning-box {
  background: #fffbeb;
  border-left: 4px solid var(--color-warning);
  padding: 16px 20px;
  border-radius: 8px;
  margin: 24px 0;
}

.contact-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  margin: 28px 0;
}

.contact-card h3 { margin-top: 0; }
.contact-card p { margin-bottom: 8px; }
.contact-card p:last-child { margin-bottom: 0; }

.footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
  font-size: 14px;
  color: var(--color-muted);
  background: var(--color-card-bg);
  margin-top: 60px;
}

.footer-content { display: flex; flex-direction: column; gap: 12px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--color-muted); text-decoration: none; }
.footer-links a:hover { color: var(--color-primary); text-decoration: underline; }

.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 14px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 15px;
  transition: border-color 0.15s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(105, 73, 255, 0.1);
}
textarea { min-height: 110px; resize: vertical; }

.checkbox-group { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 16px; }
.checkbox-group input { width: auto; margin-top: 4px; }
.checkbox-group label { font-weight: 400; font-size: 14px; }

.btn {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  padding: 13px 26px;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  transition: background 0.15s, transform 0.1s;
}
.btn:hover { background: var(--color-primary-dark); text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-secondary { background: white; color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-card-bg); }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}
table th, table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}
table th {
  background: var(--color-card-bg);
  font-weight: 700;
}

@media (max-width: 600px) {
  h1 { font-size: 28px; }
  h2 { font-size: 21px; margin-top: 36px; }
  h3 { font-size: 17px; }
  body { font-size: 15px; }
  main { padding: 28px 0 60px; }
  .container { padding: 0 18px; }
  .lang-btn { padding: 5px 10px; font-size: 12px; }
}