:root {
  --bg: #f7f5f1;
  --ink: #191a1e;
  --muted: #666a72;
  --line: #e3dfd7;
  --card: #ffffff;
  --accent: #e04a2f;
  --accent-dark: #c23a22;
  --dark: #101216;
  --radius: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: min(1120px, 100% - 48px);
  margin-inline: auto;
}

/* Header */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 50;
  background: rgba(16, 18, 22, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
}

.brand-mark {
  width: 30px;
  height: 30px;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  transition: color 0.2s;
}

.site-nav a:hover {
  color: #fff;
}

.nav-cta {
  padding: 8px 16px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius);
  transition: border-color 0.2s, background 0.2s;
}

.nav-cta:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--dark);
  color: #fff;
  overflow: hidden;
}

#rain-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background: rgba(10, 11, 14, 0.42);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 96px;
  padding-bottom: 96px;
}

.hero-kicker {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 14px;
}

.hero h1 {
  font-size: 64px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 34em;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: #fff;
}

.btn-ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.hero-scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 2;
  width: 22px;
  height: 22px;
  color: rgba(255, 255, 255, 0.6);
  animation: hint-bob 2.2s ease-in-out infinite;
}

@keyframes hint-bob {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* Sections */
.section {
  padding: 96px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head-left {
  margin-left: 0;
}

.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-head p {
  font-size: 17px;
  color: var(--muted);
}

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

.business-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.business-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(20, 22, 28, 0.08);
}

.business-visual {
  width: 132px;
  margin-bottom: 24px;
}

.business-card h3 {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 10px;
}

.business-card p {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 18px;
}

.business-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.business-tags li {
  font-size: 13px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
}

/* About */
.section-about {
  background: var(--dark);
  color: #fff;
}

.section-about .section-head p {
  color: rgba(255, 255, 255, 0.72);
}

.about-inner {
  max-width: 880px;
}

.about-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: 40px;
}

.fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.fact-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

.fact-value {
  font-size: 19px;
  font-weight: 700;
}

/* Contact */
.contact-panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px;
  max-width: 640px;
}

.contact-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}

.contact-row:last-child {
  border-bottom: none;
}

.contact-row a {
  color: var(--accent);
}

.contact-row a:hover {
  text-decoration: underline;
}

.contact-label {
  color: var(--muted);
  font-size: 15px;
}

/* Footer */
.site-footer {
  background: #0b0c0f;
  color: rgba(255, 255, 255, 0.55);
  padding: 28px 0;
  font-size: 14px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
}

.site-footer a:hover {
  color: #fff;
}

/* Responsive */
@media (max-width: 1000px) {
  .business-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .business-grid {
    grid-template-columns: 1fr;
  }

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

  .hero h1 {
    font-size: 44px;
  }

  .hero-sub {
    font-size: 17px;
  }

  .section {
    padding: 72px 0;
  }

  .section-head h2 {
    font-size: 28px;
  }
}

@media (max-width: 720px) {
  .site-nav {
    position: fixed;
    top: 64px;
    inset-inline: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(16, 18, 22, 0.97);
    padding: 8px 24px 20px;
    display: none;
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 16px;
  }

  .site-nav .nav-cta {
    margin-top: 14px;
    text-align: center;
    border-bottom: none;
  }

  .nav-toggle {
    display: flex;
  }

  .contact-panel {
    padding: 28px 22px;
  }
}