:root {
  --color-primary: #0a2540;
  --color-accent: #c9a227;
  --color-accent-dark: #a8861d;
  --color-bg: #ffffff;
  --color-bg-alt: #f6f8fa;
  --color-text: #1a1a2e;
  --color-text-secondary: #4a5568;
  --color-border: #e2e8f0;
  --color-white: #ffffff;
  --font-serif: 'Noto Serif SC', serif;
  --font-sans: 'Noto Sans SC', sans-serif;
  --shadow-sm: 0 1px 2px 0 rgba(10, 37, 64, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(10, 37, 64, 0.08), 0 2px 4px -2px rgba(10, 37, 64, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(10, 37, 64, 0.1), 0 4px 6px -4px rgba(10, 37, 64, 0.08);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 120px 0;
}

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

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 72px;
}

.section-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
  line-height: 1.3;
}

.section-desc {
  font-size: 18px;
  color: var(--color-text-secondary);
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--color-primary);
  color: var(--color-accent);
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius);
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 8px 0;
  transition: var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: var(--transition);
}

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

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

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  color: var(--color-primary);
  cursor: pointer;
}

.mobile-menu {
  position: absolute;
  top: 80px;
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow-lg);
}

.mobile-menu[hidden] {
  display: none;
}

.mobile-nav-link {
  padding: 14px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.mobile-nav-link:last-child {
  border-bottom: none;
}

.mobile-nav-link:hover {
  color: var(--color-accent);
  padding-left: 8px;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--color-primary);
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(10, 37, 64, 0.82);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  padding-top: 80px;
}

.hero-text {
  max-width: 760px;
}

.hero-label {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-serif);
  margin-bottom: 28px;
}

.brand-name {
  display: block;
  font-size: 64px;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 12px;
}

.hero-subtitle {
  display: block;
  font-size: 36px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
}

.hero-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 40px;
  max-width: 640px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-primary);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background-color: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-primary);
}

.services-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.service-card {
  flex: 1 1 320px;
  max-width: 376px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background-color: rgba(201, 162, 39, 0.1);
  color: var(--color-accent);
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.service-icon svg {
  width: 28px;
  height: 28px;
}

.service-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.service-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.app-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.app-text {
  grid-column: 1;
}

.app-qr {
  grid-column: 2;
  order: 0;
  display: flex;
  justify-content: center;
}

.app-text .app-subtitle {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.app-text p {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  line-height: 1.8;
}

.app-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.app-features li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 16px;
  color: var(--color-text);
  font-weight: 500;
}

.app-features svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.qr-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.qr-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
}

.qr-card img {
  width: 200px;
  height: 200px;
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.qr-hint {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.btn-download {
  gap: 8px;
}

.btn-download svg {
  width: 18px;
  height: 18px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text .section-title {
  text-align: left;
}

.about-text p {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.about-list {
  list-style: none;
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  color: var(--color-text);
  font-weight: 500;
}

.about-list svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.stat-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.stat-number,
.stat-suffix {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.stat-suffix {
  color: var(--color-accent);
}

.stat-label {
  display: block;
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

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

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: var(--transition);
}

.contact-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background-color: var(--color-primary);
  color: var(--color-accent);
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
}

.contact-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.contact-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.site-footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 48px 0;
}

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

.footer-logo {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-white);
}

.footer-domain {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

.footer-legal {
  text-align: right;
}

.footer-legal p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 6px;
}

.icp-link {
  font-size: 14px;
  color: var(--color-accent);
  transition: var(--transition);
}

.icp-link:hover {
  color: var(--color-white);
}

@media (max-width: 1024px) {
  .about-grid {
    gap: 48px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .section-title {
    font-size: 30px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .brand-name {
    font-size: 42px;
  }

  .hero-subtitle {
    font-size: 24px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .about-grid,
  .contact-grid,
  .app-grid {
    grid-template-columns: 1fr;
  }

  .app-text,
  .app-qr {
    grid-column: auto;
  }

  .app-qr {
    order: -1;
  }

  .service-card {
    max-width: 100%;
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-legal {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 20px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }
}