:root {
  --color-bg: #ffffff;
  --color-bg-light: #f5f9fc;
  --color-primary: #3a8fd9;
  --color-primary-soft: #e0f0ff;
  --color-accent: #4ac0a4;
  --color-text: #222222;
  --color-text-muted: #666666;
  --color-border: #dde5ee;
  --radius-base: 10px;
  --radius-pill: 999px;
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.06);
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
}

/* Layout */

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(221, 229, 238, 0.7);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}

.logo {
  display: flex;
  flex-direction: column;
}

.logo-main {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.06em;
}

.logo-sub {
  font-size: 11px;
  color: var(--color-text-muted);
}

.nav {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: 14px;
}

.nav a {
  text-decoration: none;
  color: var(--color-text-muted);
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  transition: background-color 0.2s, color 0.2s;
}

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

.nav-cta {
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
}

/* Hero */

.hero {
  padding: 72px 0 64px;
  background: radial-gradient(circle at top left, #e7f3ff 0, #ffffff 55%);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

.hero-label {
  display: inline-block;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  margin-bottom: 12px;
}

.hero h1 {
  font-size: 32px;
  margin: 0 0 16px;
}

.hero-sub {
  font-size: 15px;
  color: var(--color-text-muted);
  margin: 0 0 24px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, box-shadow 0.2s, transform 0.05s;
}

.btn.primary {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: var(--shadow-soft);
}

.btn.primary:hover {
  background-color: #2f7ac0;
  transform: translateY(1px);
}

.btn.secondary {
  background-color: #ffffff;
  color: var(--color-primary);
  border: 1px solid var(--color-primary-soft);
}

.btn.secondary:hover {
  background-color: var(--color-primary-soft);
}

/* Hero visual */

.hero-visual {
  position: relative;
  min-height: 220px;
}

.hero-circle {
  position: absolute;
  border-radius: 50%;
}

.hero-circle-1 {
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, #e0f0ff, #c4e0ff);
  top: 10px;
  right: 0;
}

.hero-circle-2 {
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, #d9f5ee, #bde7dd);
  bottom: 0;
  left: 10%;
}

.hero-illustration {
  position: absolute;
  inset: 40px 20px 40px 20px;
  border-radius: 24px;
  background-color: #ffffff;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px;
}

.hero-illustration p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--color-text-muted);
}

.hero-badge {
  display: inline-block;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background-color: var(--color-accent);
  color: #ffffff;
}

/* Sections */

.section {
  padding: 64px 0;
}

.section-light {
  background-color: var(--color-bg-light);
}

.section-title {
  font-size: 24px;
  text-align: center;
  margin: 0 0 16px;
}

.section-lead {
  text-align: center;
  font-size: 15px;
  color: var(--color-text-muted);
  margin: 0 0 32px;
}

/* About */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.about-text p {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.about-diagram {
  position: relative;
  width: 260px;
  height: 260px;
  margin: 0 auto;
}

.circle-center {
  position: absolute;
  inset: 80px;
  border-radius: 50%;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
}

.circle-item {
  position: absolute;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--color-text-muted);
}

.circle-item-1 {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

.circle-item-2 {
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

.circle-item-3 {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.circle-item-4 {
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}

/* Service: bus */

.service-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  margin-bottom: 32px;
}

.service-text h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.service-text p {
  margin: 0 0 16px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.service-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.service-benefits li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
}

.service-benefits li::before {
  content: "●";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 10px;
  color: var(--color-primary);
}

/* Phone mock */

.service-visual {
  display: flex;
  justify-content: center;
}

.phone-mock {
  width: 230px;
  border-radius: 24px;
  background-color: #ffffff;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.phone-header {
  padding: 10px 14px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 13px;
}

.phone-map {
  position: relative;
  height: 160px;
  background: linear-gradient(135deg, #e7f3ff, #f5fbff);
}

.map-pin {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: var(--radius-pill);
}

.map-stop {
  position: absolute;
  background-color: #ffffff;
  border-radius: var(--radius-pill);
  padding: 3px 8px;
  font-size: 10px;
  color: var(--color-text-muted);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
}

.map-stop-1 {
  top: 20%;
  left: 18%;
}

.map-stop-2 {
  bottom: 18%;
  right: 14%;
}

.phone-info {
  padding: 10px 14px 14px;
  font-size: 12px;
  color: var(--color-text-muted);
}

/* Feature cards */

.feature-cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature-card {
  background-color: #ffffff;
  border-radius: var(--radius-base);
  padding: 16px;
  border: 1px solid var(--color-border);
  font-size: 13px;
}

.feature-card h4 {
  margin: 0 0 8px;
  font-size: 14px;
}

/* Strength */

.strength-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.strength-item {
  background-color: #ffffff;
  border-radius: var(--radius-base);
  padding: 16px;
  border: 1px solid var(--color-border);
  font-size: 13px;
}

.strength-item h4 {
  margin: 0 0 8px;
  font-size: 14px;
}

/* Future */

.future-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.future-card {
  border-radius: var(--radius-base);
  padding: 16px;
  border: 1px solid var(--color-border);
  background-color: #ffffff;
  font-size: 13px;
  position: relative;
}

.future-card h4 {
  margin: 8px 0 8px;
  font-size: 14px;
}

.future-tag {
  display: inline-block;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
}

/* Story */

.story {
  max-width: 720px;
  margin: 0 auto;
  font-size: 14px;
  color: var(--color-text-muted);
}

.story p {
  margin: 0 0 14px;
}

/* Contact */

.section-contact {
  background: radial-gradient(circle at top, #e7f3ff 0, #ffffff 55%);
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
  background-color: #ffffff;
  border-radius: 16px;
  padding: 24px 20px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
}

.form-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 14px;
}

.form-row label {
  font-size: 13px;
  margin-bottom: 4px;
}

.form-row input,
.form-row textarea {
  border-radius: 8px;
  border: 1px solid var(--color-border);
  padding: 8px 10px;
  font-size: 14px;
  font-family: var(--font-main);
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(58, 143, 217, 0.15);
}

.form-actions {
  text-align: right;
  margin-top: 8px;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 16px 0;
  background-color: #ffffff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-text-muted);
}

.footer-logo {
  display: flex;
  flex-direction: column;
}

/* Responsive */

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

  .hero {
    padding-top: 56px;
  }

  .hero-visual {
    order: -1;
  }

  .feature-cards,
  .strength-grid,
  .future-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .hero h1 {
    font-size: 26px;
  }

  .feature-cards,
  .strength-grid,
  .future-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-form {
    padding: 20px 14px;
  }
}