/* ==========================================================================
   1. ДИЗАЙН-СИСТЕМА И СВЕТЛЫЕ ПЕРЕМЕННЫЕ
   ========================================================================== */
:root {
  --color-primary: #0f172a;     /* Глубокий, но мягкий цвет для важного текста */
  --color-accent: #22c55e;      /* Фирменный чистый зеленый UDS */
  --color-muted: #64748b;       /* Спокойный серый для второстепенного текста */
  --color-bg-light: #f8fafc;    /* Воздушный серый фон для легкого контраста */
  --color-border: #e2e8f0;      /* Едва заметные тонкие рамки */
  --radius-main: 20px;          /* Округлые углы делают дизайн более "дружелюбным" */
  --font-main: 'Inter', -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  color: var(--color-primary);
  background-color: #ffffff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  margin-bottom: 56px;
}

/* Легкая, но заметная золотая кнопка */
.btn-giant {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  max-width: 360px;
  padding: 1.1rem 2rem;
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(135deg, rgb(255, 223, 0) 0%, rgb(212, 175, 55) 50%, rgb(153, 101, 21) 100%);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-main);
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(212, 175, 55, 0.25);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-giant:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(212, 175, 55, 0.35);
}

/* ==========================================================================
   2. HERO СЕКЦИЯ (ЧИСТАЯ, БЕЛАЯ, С ОСТРОВАМИ ВОЗДУХА)
   ========================================================================== */
.hero-section {
  padding: 120px 0 100px 0;
  background-color: #ffffff;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background-color: #f1f5f9;
  color: #475569;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 100px;
  margin-bottom: 28px;
  letter-spacing: 0.03em;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  margin-bottom: 24px;
  max-width: 850px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-muted);
  margin-bottom: 44px;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}

.hero-results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 64px auto 0 auto;
  border-top: 1px solid var(--color-border);
  padding-top: 48px;
}

.hero-result-item .num {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 10px;
}

.hero-result-item .txt {
  font-size: 0.95rem;
  color: var(--color-muted);
  font-weight: 500;
}

/* ==========================================================================
   3. СЕКЦИЯ СЕТКИ ОТРАСЛЕЙ
   ========================================================================== */
.business-solutions {
  padding: 100px 0;
  background-color: var(--color-bg-light);
}

.bs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bs-card {
  border-radius: var(--radius-main);
  overflow: hidden;
  height: 290px;
  position: relative;
}

.bs-card-stats {
  grid-row: span 2;
  border: 1px solid var(--color-border);
  background-color: #ffffff;
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: auto;
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.03);
}

.bs-stats-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-0: 0 0 24px 0;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.bs-stats-list {
  list-style: none;
}

.bs-stats-list li {
  font-size: 1rem;
  font-weight: 500;
  color: #475569;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
}

.bs-stats-list li::before {
  content: "•";
  color: var(--color-accent);
  font-weight: bold;
  font-size: 1.4rem;
  display: inline-block;
  width: 1em;
  margin-left: -0.1em;
}

.bs-graph-box {
  margin-top: auto;
  padding: 15px 0 5px 0;
}

.bs-graph-svg {
  width: 100%;
  height: auto;
  display: block;
}

.bs-footnote {
  font-size: 0.8rem;
  color: #94a3b8;
  margin-top: 12px;
}

.bs-card-img {
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  padding: 32px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Изменен эффект наведения: без тяжелых теней, чистый аккуратный подъем */
.bs-card-img:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

.bs-card-label {
  color: #ffffff;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   4. ТАРИФЫ
   ========================================================================== */
.tariffs-section {
  padding: 100px 0;
  background-color: #ffffff;
}

.tariff-wrapper {
  max-width: 500px;
  margin: 0 auto;
}

.tariff-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-accent); /* Легкий зеленый штрих вместо толстой рамки */
  border-radius: var(--radius-main);
  padding: 48px 40px;
  position: relative;
  box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.06);
}

.tariff-badge {
  position: absolute;
  top: -14px;
  left: 40px;
  background-color: #e8f9ee; /* Светло-зеленый нежный фон */
  color: #16a34a;
  padding: 4px 14px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.tariff-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.tariff-price {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 32px;
  color: var(--color-primary);
}

.tariff-price span {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-muted);
}

.tariff-features {
  list-style: none;
  margin-bottom: 32px;
  border-top: 1px solid var(--color-border);
  padding-top: 28px;
}

.tariff-features li {
  font-size: 0.95rem;
  margin-bottom: 16px;
  color: #475569;
  display: flex;
  align-items: center;
}

.tariff-features li::before {
  content: "✓";
  color: var(--color-accent);
  font-weight: bold;
  margin-right: 14px;
  font-size: 1rem;
}

.tariff-note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* ==========================================================================
   5. CTA СЕКЦИЯ С РЕГИСТРАЦИЕЙ (ТЕПЕРЬ СВЕТЛАЯ)
   ========================================================================== */
.cta-section {
  padding: 100px 0;
  background-color: var(--color-bg-light); /* Легкий чистый фон */
  color: var(--color-primary);
  text-align: center;
}

.cta-text {
  font-size: 1.1rem;
  max-width: 600px;
  margin: -16px auto 40px auto;
  color: var(--color-muted);
}

/* ==========================================================================
   6. ПОДВАЛ (СВЕТЛЫЙ, МИНИМАЛИСТИЧНЫЙ)
   ========================================================================== */
.footer-section {
  padding: 56px 0;
  background-color: #ffffff;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
}

.footer-contacts h4 {
  color: var(--color-primary);
  margin-bottom: 12px;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.footer-link {
  display: block;
  color: #475569;
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 8px;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--color-accent);
}

.copyright {
  font-size: 0.85rem;
  color: #94a3b8;
}

/* ==========================================================================
   7. АДАПТИВНОСТЬ
   ========================================================================== */
@media (max-width: 992px) {
  .hero-title { font-size: 2.5rem; }
  .bs-grid { grid-template-columns: repeat(2, 1fr); }
  .bs-card-stats { grid-column: span 2; grid-row: auto; height: 320px; }
}

@media (max-width: 640px) {
  .section-title { font-size: 1.6rem; margin-bottom: 40px; }
  .hero-title { font-size: 2rem; }
  .hero-results-grid { grid-template-columns: 1fr; gap: 24px; }
  .bs-grid { grid-template-columns: 1fr; }
  .bs-card-stats { grid-column: span 1; height: auto; padding: 28px; }
  .bs-card { height: 240px; }
  .tariff-card { padding: 32px 24px; }
  .footer-grid { flex-direction: column; text-align: center; }
}