:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --text: #12202d;
  --muted: #4f6274;
  --primary: #0f5ea8;
  --primary-strong: #0b3f76;
  --accent: #ff8b3d;
  --line: #d4e0ec;
  --shadow: 0 18px 44px rgba(15, 94, 168, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "IBM Plex Sans", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
  background: radial-gradient(circle at 0% 0%, #e0edf9 0%, transparent 45%),
    radial-gradient(circle at 100% 20%, #ffe3ce 0%, transparent 38%),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

.bg-shape {
  position: fixed;
  z-index: -1;
  border-radius: 999px;
  filter: blur(40px);
  opacity: 0.4;
}

.bg-shape-1 {
  width: 360px;
  height: 360px;
  background: #8bc3ff;
  top: -120px;
  right: -80px;
}

.bg-shape-2 {
  width: 280px;
  height: 280px;
  background: #ffc799;
  bottom: -100px;
  left: -80px;
}

.container {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(14px);
  background: rgba(244, 247, 251, 0.84);
  border-bottom: 1px solid rgba(212, 224, 236, 0.7);
  z-index: 10;
}

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

.brand {
  text-decoration: none;
  color: var(--primary-strong);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  gap: 18px;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
}

.nav a:hover {
  color: var(--primary-strong);
}

.hero {
  padding: 72px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 34px;
  align-items: stretch;
}

.kicker {
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.07em;
  margin: 0;
  font-size: 0.82rem;
}

h1,
h2,
h3 {
  line-height: 1.25;
  margin-top: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 10px 0 16px;
}

h2 {
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  margin-bottom: 14px;
}

.lead {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 60ch;
}

.actions {
  margin-top: 22px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 12px;
  font-weight: 600;
}

.btn-primary {
  background: linear-gradient(120deg, var(--primary), var(--primary-strong));
  color: #fff;
  box-shadow: var(--shadow);
}

.btn-secondary {
  border: 1px solid var(--line);
  color: var(--primary-strong);
  background: var(--surface);
}

.hero-card,
.feature-item,
.contact-card {
  background: var(--surface);
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: 0 8px 26px rgba(7, 31, 59, 0.08);
}

.hero-card {
  padding: 24px;
  animation: rise-in 0.65s ease;
}

.hero-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.hero-card li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 10px;
}

.hero-card li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.hero-card span {
  color: var(--muted);
}

.section {
  padding: 52px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(240, 246, 252, 0.86));
  border-top: 1px solid rgba(212, 224, 236, 0.7);
  border-bottom: 1px solid rgba(212, 224, 236, 0.7);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-item {
  padding: 18px;
  transform: translateY(14px);
  opacity: 0;
  animation: lift-in 0.45s ease forwards;
}

.feature-item:nth-child(2) {
  animation-delay: 0.08s;
}

.feature-item:nth-child(3) {
  animation-delay: 0.16s;
}

.feature-item p {
  color: var(--muted);
  margin-bottom: 0;
}

.contact-card {
  padding: 18px;
}

.contact-card a {
  color: var(--primary-strong);
}

.site-footer {
  padding: 22px 0 34px;
  text-align: center;
  color: var(--muted);
}

@keyframes rise-in {
  from {
    transform: translateY(22px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes lift-in {
  from {
    transform: translateY(14px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

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

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .nav {
    flex-wrap: wrap;
    gap: 10px 14px;
  }
}