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

:root {
  --bg: #f6f8fc;
  --bg-2: #eef3fb;
  --white: #ffffff;
  --text: #101828;
  --muted: #5f6c85;
  --line: #dbe4f1;
  --primary: #6d5dfc;
  --primary-2: #4f8cff;
  --accent: #13c2ff;
  --shadow-lg: 0 20px 60px rgba(58, 76, 122, 0.14);
  --shadow-md: 0 14px 35px rgba(58, 76, 122, 0.10);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --container: 1240px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(109, 93, 252, 0.10), transparent 28%),
    radial-gradient(circle at top right, rgba(19, 194, 255, 0.10), transparent 26%),
    linear-gradient(180deg, #f8fbff 0%, #f3f7fd 100%);
  line-height: 1.7;
  overflow-x: hidden;
}

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

.site-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(109, 93, 252, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109, 93, 252, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.45), transparent 80%);
  z-index: -1;
}

.container {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
}

.narrow {
  max-width: 920px;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 18px 0;
  backdrop-filter: blur(14px);
  background: rgba(248, 251, 255, 0.82);
  border-bottom: 1px solid rgba(219, 228, 241, 0.8);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo,
.footer-logo {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text);
}

.nav-right {
  display: flex;
  align-items: center;
}

.online-counter {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  box-shadow: var(--shadow-md);
  color: var(--text);
  font-weight: 700;
}

.online-dot {
  width: 10px;
  height: 10px;
  background: #15d46b;
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(21, 212, 107, 0.15);
}

.online-text {
  color: var(--muted);
  font-weight: 600;
}

.hero {
  padding: 72px 0 48px;
}

.hero-wrap {
  position: relative;
  text-align: center;
  padding: 64px 34px 38px;
  border-radius: 34px;
  background:
    linear-gradient(135deg, rgba(109, 93, 252, 0.10), rgba(79, 140, 255, 0.08), rgba(19, 194, 255, 0.08)),
    rgba(255,255,255,0.82);
  border: 1px solid rgba(219, 228, 241, 0.95);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.hero-wrap::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(109, 93, 252, 0.18), transparent 68%);
  top: -120px;
  left: -80px;
  pointer-events: none;
}

.hero-wrap::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(19, 194, 255, 0.15), transparent 68%);
  bottom: -160px;
  right: -100px;
  pointer-events: none;
}

.hero-badge,
.section-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: #4d53b8;
  background: rgba(109, 93, 252, 0.10);
  border: 1px solid rgba(109, 93, 252, 0.16);
  margin-bottom: 20px;
}

.hero h1 {
  max-width: 860px;
  margin: 0 auto 18px;
  font-size: clamp(2.7rem, 5vw, 5.2rem);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: -0.05em;
  color: #0e1728;
}

.hero-description {
  max-width: 760px;
  margin: 0 auto 30px;
  font-size: 1.05rem;
  color: var(--muted);
}

.hero-form {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
  align-items: end;
}

.input-group {
  text-align: left;
}

.input-group label {
  display: block;
  margin-bottom: 9px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #30415e;
}

.input-group select {
  width: 100%;
  height: 60px;
  border-radius: 18px;
  border: 1px solid #d8e2f0;
  background: rgba(255,255,255,0.94);
  padding: 0 18px;
  font-size: 0.98rem;
  font-family: inherit;
  color: var(--text);
  outline: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.input-group select:focus {
  border-color: rgba(109, 93, 252, 0.55);
  box-shadow: 0 0 0 4px rgba(109, 93, 252, 0.10);
}

.start-chat-btn {
  height: 60px;
  border: 0;
  border-radius: 18px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-2), var(--accent));
  box-shadow: 0 18px 36px rgba(86, 102, 255, 0.22);
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.start-chat-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 40px rgba(86, 102, 255, 0.28);
}

.features-section {
  padding: 24px 0 42px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card {
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 30px 26px;
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(109, 93, 252, 0.14), rgba(19, 194, 255, 0.12));
  margin-bottom: 18px;
}

.feature-card h2 {
  font-size: 1.24rem;
  line-height: 1.2;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--muted);
}

.content-section {
  padding: 36px 0 44px;
}

.content-card {
  background: rgba(255,255,255,0.86);
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: 40px 34px;
  box-shadow: var(--shadow-lg);
}

.content-card h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.04em;
  margin-bottom: 16px;
}

.content-card h3 {
  font-size: 1.45rem;
  line-height: 1.2;
  margin: 26px 0 12px;
}

.content-card p {
  color: var(--muted);
  font-size: 1.02rem;
}

.faq-section {
  padding: 36px 0 80px;
}

.section-head {
  text-align: center;
  margin-bottom: 26px;
}

.section-head h2 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.1;
  margin-bottom: 10px;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.section-head p {
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 16px;
}

.faq-item {
  background: rgba(255,255,255,0.88);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 22px;
  font-weight: 800;
  color: #162132;
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--primary);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(109, 93, 252, 0.14), rgba(19, 194, 255, 0.12));
  flex-shrink: 0;
}

.faq-item p {
  padding: 0 22px 22px 78px;
  color: var(--muted);
}

.footer {
  border-top: 1px solid var(--line);
  background: rgba(255,255,255,0.75);
  padding: 34px 0 46px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 28px;
}

.footer-brand {
  max-width: 680px;
}

.footer-brand p {
  margin-top: 12px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: #3d4a63;
  font-weight: 700;
}

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

@media (max-width: 1080px) {
  .hero-form,
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .start-chat-btn {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 14px 0;
  }

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

  .hero {
    padding: 46px 0 28px;
  }

  .hero-wrap {
    padding: 34px 18px 22px;
    border-radius: 26px;
  }

  .hero h1 {
    font-size: 2.35rem;
  }

  .hero-description {
    font-size: 0.98rem;
  }

  .hero-form,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .start-chat-btn {
    grid-column: auto;
  }

  .content-card {
    padding: 28px 20px;
    border-radius: 24px;
  }

  .content-card h2 {
    font-size: 2rem;
  }

  .content-card h3 {
    font-size: 1.28rem;
  }

  .faq-item summary {
    padding: 18px 18px;
    padding-right: 54px;
  }

  .faq-item p {
    padding: 0 18px 18px 18px;
  }

  .footer-inner {
    flex-direction: column;
  }
}
.responsive-image {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: 12px;
  display: block;
  margin: 20px auto;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15); 
  object-fit: cover;
}

@media (max-width: 600px) {
  .responsive-image {
    max-width: 100%;
    border-radius: 8px;
    margin: 15px 0;
  }
}