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

:root {
  --bg-page: #f5f7fb;
  --bg-white: #ffffff;
  --bg-accent: #eef3ff;
  --text-main: #111827;
  --text-muted: #6b7280;
  --border-soft: #e5e7eb;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius-lg: 18px;
  --radius-pill: 999px;
}

body {
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.5;
}

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

ul {
  list-style: none;
}

/* Layout */

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(245, 247, 251, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.8);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: radial-gradient(circle at 20% 20%, #60a5fa, #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.35);
}

.logo-text {
  font-weight: 600;
  font-size: 18px;
  color: var(--text-main);
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}

.nav-link {
  position: relative;
  color: var(--text-muted);
  padding-bottom: 2px;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--primary);
  transition: width 0.18s ease;
}

.nav-link:hover {
  color: var(--text-main);
}

.nav-link:hover::after {
  width: 100%;
}

/* Language switcher */

.language-switcher {
  position: relative;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  background: var(--bg-white);
  font-size: 13px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

.lang-toggle-label {
  white-space: nowrap;
}

.lang-toggle-arrow {
  font-size: 10px;
  transform: translateY(1px);
}

.lang-dropdown {
  position: absolute;
  right: 0;
  margin-top: 6px;
  padding: 6px;
  border-radius: 14px;
  background: var(--bg-white);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
  min-width: 140px;
  display: none;
}

.language-switcher.open .lang-dropdown {
  display: block;
}

.lang-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 6px 8px;
  border-radius: 10px;
  border: none;
  background: transparent;
  font-size: 13px;
  cursor: pointer;
}

.lang-btn:hover {
  background: var(--bg-page);
}

.lang-btn.active {
  background: var(--bg-accent);
  font-weight: 500;
}

/* Hero */

.hero {
  padding: 40px 0 32px;
}

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

.hero-text {
  max-width: 640px;
  padding: 24px 20px 28px;
  background: var(--bg-white);
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
}

.hero-title {
  font-size: 26px;
  line-height: 1.2;
  margin-bottom: 10px;
}

.hero-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.hero-list {
  margin-bottom: 18px;
}

.hero-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-main);
  margin-bottom: 6px;
}

.hero-list li::before {
  content: "•";
  position: absolute;
  left: 6px;
  top: 0;
  color: var(--primary);
}

.hero-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
}

/* Sections */

.section {
  padding: 16px 0 8px;
}

.section-inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.5fr);
  gap: 16px;
}

.section-title {
  font-size: 20px;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 16px;
  margin-bottom: 8px;
}

.section-text {
  font-size: 14px;
  color: var(--text-main);
  margin-bottom: 6px;
}

.section-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 10px;
}

.section-steps {
  padding-top: 12px;
}

.section-earn {
  padding-top: 4px;
}

.section-faq {
  padding-top: 8px;
}

.section-contact {
  padding-top: 8px;
  padding-bottom: 32px;
}

/* Cards & lists */

.section-block {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  box-shadow: var(--shadow-soft);
}

.section-block-accent {
  background: var(--bg-accent);
}

.simple-list li {
  font-size: 14px;
  color: var(--text-main);
  margin-bottom: 6px;
  position: relative;
  padding-left: 18px;
}

.simple-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--primary);
}

/* Steps */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 10px;
}

.step-card {
  background: var(--bg-white);
  border-radius: 18px;
  padding: 14px 12px;
  box-shadow: var(--shadow-soft);
}

.step-number {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  background: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-title {
  font-size: 14px;
  margin-bottom: 4px;
}

.step-text {
  font-size: 13px;
  color: var(--text-muted);
}

/* FAQ */

.faq-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--bg-white);
  border-radius: 16px;
  padding: 10px 12px;
  box-shadow: var(--shadow-soft);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  border: none;
  padding: 0;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
}

.faq-toggle {
  font-size: 18px;
  color: var(--text-muted);
  margin-left: 8px;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.18s ease, margin-top 0.18s ease;
}

.faq-answer p {
  font-size: 13px;
  color: var(--text-muted);
}

.faq-item.open .faq-answer {
  margin-top: 6px;
  max-height: 200px;
}

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

/* Contact */

.contact-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg-white);
  border-radius: 24px;
  padding: 18px 16px;
  box-shadow: var(--shadow-soft);
}

.contact-text {
  max-width: 520px;
}

/* Buttons */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--primary);
  color: #ffffff;
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.35);
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 8px 16px rgba(37, 99, 235, 0.3);
}

.btn-large {
  min-width: 210px;
}

/* Footer */

.footer {
  border-top: 1px solid var(--border-soft);
  padding: 10px 0 18px;
  background: var(--bg-page);
}

.footer-inner {
  display: flex;
  justify-content: center;
}

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

/* Responsive */

@media (max-width: 900px) {
  .section-inner {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .header-inner {
    align-items: flex-start;
  }

  .nav {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 24px;
  }

  .hero-text {
    padding: 18px 14px 20px;
  }

  .hero-title {
    font-size: 22px;
  }

  .hero-subtitle {
    font-size: 14px;
  }

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

  .contact-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn-large {
    width: 100%;
    justify-content: center;
  }

  .header-inner {
    flex-wrap: wrap;
    row-gap: 8px;
  }
}


/* Buttons */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1da1f2 0%, #039be5 100%);
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 10px 25px rgba(3, 155, 229, 0.45);
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(3, 155, 229, 0.55);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 8px 20px rgba(3, 155, 229, 0.4);
}

.btn-large {
  min-width: 210px;
}

.tg-btn .tg-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.tg-icon {
  width: 18px;
  height: 18px;
  display: block;
}
.logo-img {
    height: 40px;
    width: auto;
    display: block;
}