*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'DM Sans', sans-serif; background: #f4f5f8; color: #0d0f1a; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: rgba(244,245,248,0.92);
  border-bottom: 1px solid rgba(0,0,0,0.07);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 40px;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.logo-wrap { display: flex; align-items: center; gap: 12px; }
.logo-wrap img { height: 44px; width: auto; }
.logo-name {
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 15px;
  letter-spacing: 0.1em; text-transform: uppercase; color: #0d0f1a;
  padding-left: 14px; border-left: 1px solid rgba(0,0,0,0.13);
}
.back-link {
  font-family: 'DM Mono', monospace; font-size: 13px; color: #444860;
  letter-spacing: 0.04em; display: flex; align-items: center; gap: 6px;
  transition: color 0.2s;
}
.back-link:hover { color: #23395d; }

.hero {
  padding: 140px 40px 80px;
  max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center;
}
.hero-tag {
  font-family: 'DM Mono', monospace; font-size: 14px; letter-spacing: 0.18em;
  text-transform: uppercase; color: #23395d; margin-bottom: 16px;
  display: flex; align-items: center; gap: 10px;
}
.hero-tag span { display: inline-block; width: 20px; height: 1px; background: #23395d; }
h1 {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: clamp(32px, 3.5vw, 56px); letter-spacing: -0.03em;
  line-height: 1.05; color: #0d0f1a; margin-bottom: 24px;
}
.hero-desc {
  font-size: 17px; line-height: 1.75; color: #444860;
  margin-bottom: 36px; font-weight: 300;
}
.spec-chips { display: flex; gap: 10px; flex-wrap: wrap; }
.chip {
  padding: 6px 14px; border: 1px solid rgba(0,0,0,0.13);
  border-radius: 2px; font-family: 'DM Mono', monospace;
  font-size: 13px; color: #9da3b8; letter-spacing: 0.06em;
}
.hero-img {
  border-radius: 4px; overflow: hidden;
  border: 1px solid rgba(0,0,0,0.07);
  background: #e4e7ef;
}
.hero-img img { width: 100%; height: 100%; object-fit: cover; }

.section { padding: 80px 40px; }
.section-inner { max-width: 1280px; margin: 0 auto; }
.section-label {
  font-family: 'DM Mono', monospace; font-size: 14px; letter-spacing: 0.18em;
  text-transform: uppercase; color: #23395d; margin-bottom: 12px;
  display: flex; align-items: center; gap: 10px;
}
.section-label span { display: inline-block; width: 20px; height: 1px; background: #23395d; }
h2 {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: clamp(24px, 2.8vw, 38px); letter-spacing: -0.03em;
  color: #0d0f1a; margin-bottom: 40px; line-height: 1.08;
}

.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px;
  border: 1px solid rgba(0,0,0,0.07);
}
.feature-card {
  padding: 36px 32px; background: #fff;
  border-right: 1px solid rgba(0,0,0,0.07);
}
.feature-card:nth-child(3n) { border-right: none; }
.feature-num {
  font-family: 'Syne', sans-serif; font-weight: 800; font-size: 28px;
  color: #23395d; margin-bottom: 8px; letter-spacing: -0.02em;
}
.feature-title {
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 16px;
  color: #0d0f1a; margin-bottom: 8px;
}
.feature-body { font-size: 14px; line-height: 1.65; color: #444860; }

.specs-table { width: 100%; border-collapse: collapse; }
.specs-table tr { border-bottom: 1px solid rgba(0,0,0,0.07); }
.specs-table tr:last-child { border-bottom: none; }
.specs-table td { padding: 16px 20px; font-size: 15px; }
.specs-table td:first-child {
  font-family: 'DM Mono', monospace; font-size: 13px;
  color: #9da3b8; letter-spacing: 0.06em; width: 220px;
  text-transform: uppercase;
}
.specs-table td:last-child { color: #0d0f1a; font-weight: 500; }
.specs-wrap { background: #fff; border: 1px solid rgba(0,0,0,0.07); border-radius: 4px; overflow: hidden; }

.cta-bar {
  background: #fff; border: 1px solid rgba(0,0,0,0.13);
  padding: 48px 56px; display: flex; justify-content: space-between;
  align-items: center; gap: 40px; flex-wrap: wrap;
}
.cta-bar h3 {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: clamp(18px, 2vw, 28px); letter-spacing: -0.02em; color: #0d0f1a;
}
.cta-bar p { font-size: 15px; color: #444860; margin-top: 8px; max-width: 480px; }
.btn-primary {
  padding: 14px 32px; background: #23395d; color: #fff;
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 14px;
  letter-spacing: 0.04em; border-radius: 3px; white-space: nowrap;
  transition: opacity 0.2s; display: inline-block;
}
.btn-primary:hover { opacity: 0.85; }

footer {
  background: #f4f5f8; border-top: 1px solid rgba(0,0,0,0.07);
  padding: 32px 40px; text-align: center;
  font-family: 'DM Mono', monospace; font-size: 13px; color: #9da3b8;
  letter-spacing: 0.06em;
}

.bg-alt { background: #eef0f5; }
.divider { width: 100%; height: 1px; background: rgba(0,0,0,0.07); }