/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  color: #1a1a2e;
  line-height: 1.7;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Container */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: #0a2540;
}
.logo-icon {
  width: 32px; height: 32px;
  background: #0a2540;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 14px;
}
.nav { display: flex; gap: 32px; }
.nav a {
  font-size: 15px;
  color: #3d4f6b;
  transition: color 0.2s;
}
.nav a:hover { color: #0a2540; }

/* Hero */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: url("images/hero-boardroom.png") center/cover no-repeat;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: rgba(10,37,64,0.78);
}
.hero-content { position: relative; z-index: 2; max-width: 800px; }
.hero h1 {
  font-size: 44px;
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-cta {
  display: inline-flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 32px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: #00a3e0;
  color: #fff;
}
.btn-primary:hover { background: #008ec2; }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.5);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

/* Section */
.section { padding: 80px 0; }
.section-alt { background: #f6f9fc; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: #0a2540;
  margin-bottom: 12px;
}
.section-header p {
  font-size: 16px;
  color: #5e6a7e;
  max-width: 640px;
  margin: 0 auto;
}

/* Overview */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.overview-text h3 {
  font-size: 22px;
  font-weight: 600;
  color: #0a2540;
  margin-bottom: 16px;
}
.overview-text p {
  color: #3d4f6b;
  margin-bottom: 16px;
}
.overview-img {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(10,37,64,0.12);
}

/* Pain points / value cards */
.value-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.value-card {
  background: #fff;
  border-radius: 12px;
  padding: 28px;
  border: 1px solid rgba(0,0,0,0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(10,37,64,0.08);
}
.value-card .icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: #eaf6fb;
  color: #00a3e0;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}
.value-card h4 {
  font-size: 17px;
  font-weight: 600;
  color: #0a2540;
  margin-bottom: 8px;
}
.value-card p {
  font-size: 14px;
  color: #5e6a7e;
  line-height: 1.6;
}

/* Features */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 64px;
}
.feature-block:last-child { margin-bottom: 0; }
.feature-block.reverse { direction: rtl; }
.feature-block.reverse > * { direction: ltr; }
.feature-img {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(10,37,64,0.1);
}
.feature-text h3 {
  font-size: 24px;
  font-weight: 700;
  color: #0a2540;
  margin-bottom: 16px;
}
.feature-text p {
  color: #3d4f6b;
  margin-bottom: 16px;
}
.feature-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: #3d4f6b;
  font-size: 15px;
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #00a3e0;
}

/* Room types */
.room-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}
.room-card {
  background: #fff;
  border-radius: 12px;
  padding: 28px;
  border: 1px solid rgba(0,0,0,0.05);
}
.room-card h4 {
  font-size: 18px;
  font-weight: 600;
  color: #0a2540;
  margin-bottom: 10px;
}
.room-card p {
  font-size: 14px;
  color: #5e6a7e;
  line-height: 1.6;
}
.room-tag {
  display: inline-block;
  padding: 4px 10px;
  background: #eaf6fb;
  color: #00a3e0;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 12px;
}

/* Cases */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.case-card {
  background: #fff;
  border-radius: 12px;
  padding: 28px;
  border: 1px solid rgba(0,0,0,0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(10,37,64,0.08);
}
.case-card .case-tag {
  display: inline-block;
  padding: 4px 10px;
  background: #f0f3f8;
  color: #3d4f6b;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 14px;
}
.case-card h4 {
  font-size: 17px;
  font-weight: 600;
  color: #0a2540;
  margin-bottom: 10px;
}
.case-card p {
  font-size: 14px;
  color: #5e6a7e;
  line-height: 1.6;
}

/* Footer */
.footer {
  background: #0a2540;
  color: rgba(255,255,255,0.7);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer p, .footer a {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
}
.footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

/* Responsive */
@media (max-width: 900px) {
  .overview-grid, .feature-block, .feature-block.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }
  .feature-block.reverse > * { direction: ltr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 32px; }
  .nav { display: none; }
}