:root {
  --white: #ffffff;
  --bg: #faf9f7;
  --text: #1c1917;
  --text-muted: #78716c;
  --border: #e7e5e4;
  --gradient: linear-gradient(135deg, #ea580c 0%, #d97706 50%, #059669 100%);
  --gradient-soft: linear-gradient(135deg, rgba(234, 88, 12, 0.08) 0%, rgba(5, 150, 105, 0.08) 100%);
  --orange: #ea580c;
  --amber: #d97706;
  --green: #059669;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(234, 88, 12, 0.08);
  --font: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}

.header.scrolled {
  border-bottom-color: var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--gradient);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-cta {
  padding: 8px 20px !important;
  background: var(--gradient);
  color: var(--white) !important;
  border-radius: 8px;
}

.nav-cta:hover {
  opacity: 0.92;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
  background: linear-gradient(165deg, #fff7ed 0%, #fef3c7 40%, #f0fdf4 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(234, 88, 12, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(217, 119, 6, 0.1), transparent),
    radial-gradient(ellipse 50% 30% at 0% 80%, rgba(5, 150, 105, 0.1), transparent);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(234, 88, 12, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(234, 88, 12, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black 30%, transparent 90%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 580px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 10px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(234, 88, 12, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(234, 88, 12, 0.35);
}

.btn-outline {
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--white);
}

.btn-outline:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.section {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 48px;
}

.section-header.center {
  text-align: center;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 12px;
}

.section-tag.light {
  color: rgba(255, 255, 255, 0.85);
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.section-sub {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.about {
  background: var(--bg);
}

.about-grid {
  display: grid;
  gap: 24px;
  max-width: 800px;
}

.about-lead {
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.7;
  color: var(--text);
}

.about-text {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.digital {
  position: relative;
  overflow: hidden;
  background: linear-gradient(165deg, #292524 0%, #44403c 50%, #1c1917 100%);
  color: var(--white);
}

.digital-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 20% 50%, rgba(234, 88, 12, 0.2), transparent),
    radial-gradient(ellipse 60% 40% at 80% 30%, rgba(5, 150, 105, 0.15), transparent);
  pointer-events: none;
}

.digital .hero-grid {
  mask-image: linear-gradient(to bottom, black 20%, transparent 95%);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
}

.digital .container {
  position: relative;
  z-index: 1;
}

.digital-inner {
  max-width: 640px;
}

.digital .section-header h2 {
  color: var(--white);
}

.digital-text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 32px;
}

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

.digital-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.9);
}

.check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  color: var(--white);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
}

.software {
  background: linear-gradient(180deg, #fffbeb 0%, #f0fdf4 100%);
}

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

.feature-card {
  position: relative;
  padding: 36px 28px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: box-shadow 0.3s, transform 0.3s;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  border-radius: var(--radius) var(--radius) 0 0;
  opacity: 0.7;
}

.feature-card:hover {
  box-shadow: 0 12px 32px rgba(234, 88, 12, 0.12);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-soft);
  border-radius: 12px;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--orange);
}

.feature-card:nth-child(2) .feature-icon svg {
  color: var(--amber);
}

.feature-card:nth-child(3) .feature-icon svg {
  color: var(--green);
}

.feature-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.future {
  background: var(--bg);
}

.future-card {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.future-quote {
  font-size: 1.5rem;
  font-weight: 600;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 28px;
  letter-spacing: 0.04em;
}

.future-text {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.future-text:last-child {
  margin-bottom: 0;
}

.contact-card {
  text-align: center;
  max-width: 520px;
  margin: 0 auto;
  padding: 56px 40px;
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.contact-desc {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.contact-email {
  display: inline-block;
  font-size: 1.125rem;
  font-weight: 600;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: opacity 0.2s;
}

.contact-email:hover {
  opacity: 0.8;
}

.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer-brand {
  font-weight: 600;
  font-size: 0.9375rem;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links li {
    width: 100%;
    border-bottom: 1px solid var(--border);
  }

  .nav-links li:last-child {
    border-bottom: none;
    padding-top: 12px;
  }

  .nav-links a {
    display: block;
    padding: 14px 0;
  }

  .nav-cta {
    text-align: center;
    display: block !important;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .section {
    padding: 72px 0;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .contact-card {
    padding: 40px 24px;
  }

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