:root {
  --bg: #0e0c0b;
  --bg-soft: #151210;
  --surface: #181513;
  --line: rgba(242, 236, 230, 0.14);
  --text: #f2ece6;
  --muted: #b5aaa1;
  --accent: #c68a5c;
  --accent-2: #8fa99b;
  --radius: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(1160px, 90%); margin: 0 auto; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(14, 12, 11, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.brand span {
  color: var(--muted);
  font-weight: 400;
  margin-left: 8px;
  font-size: 14px;
}
.site-nav { display: flex; gap: 32px; font-size: 14px; color: var(--muted); }
.site-nav a:hover { color: var(--accent); }

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 68px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("../assets/hero.jpg");
  background-size: cover;
  background-position: center 30%;
  transform: scale(1.04);
  filter: saturate(0.82) contrast(1.05);
}
.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(14, 12, 11, 0.94) 0%, rgba(14, 12, 11, 0.68) 45%, rgba(14, 12, 11, 0.22) 100%),
    linear-gradient(0deg, rgba(14, 12, 11, 0.9) 0%, transparent 35%);
}
.hero-content { position: relative; z-index: 1; max-width: 760px; padding: 120px 0 180px; }
.eyebrow {
  font-size: 13px;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero h1 {
  font-family: "Songti SC", "Noto Serif SC", Georgia, serif;
  font-size: clamp(44px, 7vw, 86px);
  line-height: 1.08;
  font-weight: 600;
}
.hero-sub {
  margin-top: 24px;
  max-width: 520px;
  color: rgba(242, 236, 230, 0.78);
  font-size: 17px;
}
.hero-actions { display: flex; gap: 14px; margin-top: 40px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 30px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
}
.btn.light { background: var(--text); color: #16120f; }
.btn.outline { border: 1px solid rgba(242, 236, 230, 0.5); color: var(--text); }

.hero-stats {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  background: rgba(14, 12, 11, 0.78);
  backdrop-filter: blur(12px);
}
.hero-stats div { padding: 28px 32px; border-right: 1px solid var(--line); }
.hero-stats div:last-child { border-right: 0; }
.hero-stats strong { display: block; font-size: 34px; font-weight: 600; color: var(--accent); font-family: Georgia, serif; }
.hero-stats span { font-size: 13px; color: var(--muted); }

.section { padding: 120px 0; }
.section-head { max-width: 720px; margin-bottom: 56px; }
.kicker { color: var(--accent); font-size: 12px; font-weight: 700; text-transform: uppercase; margin-bottom: 14px; }
.section-head h2 {
  font-family: "Songti SC", "Noto Serif SC", Georgia, serif;
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 600;
  line-height: 1.2;
}
.section-head p:last-child { margin-top: 16px; color: var(--muted); }

.ethos { background: var(--bg-soft); }
.ethos-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.ethos-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.02);
  padding: 28px;
}
.ethos-grid span { color: var(--accent); font-family: Georgia, serif; font-size: 15px; }
.ethos-grid h3 { margin: 18px 0 8px; font-size: 19px; }
.ethos-grid p { color: var(--muted); font-size: 14px; }

.pillar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pillar-grid article {
  border-top: 1px solid var(--line);
  padding: 28px 4px 20px;
}
.pillar-index { color: var(--accent); font-family: Georgia, serif; }
.pillar-grid h3 { margin: 14px 0 8px; font-size: 20px; }
.pillar-grid p { color: var(--muted); font-size: 14px; }

.modules { background: var(--bg-soft); }
.module-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.module-grid > div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background: rgba(255, 255, 255, 0.02);
}
.module-grid span { color: var(--accent-2); font-family: Georgia, serif; font-size: 13px; }
.module-grid h3 { margin: 14px 0 6px; font-size: 16px; }
.module-grid p { color: var(--muted); font-size: 13px; }

.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.scene-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.scene-media { aspect-ratio: 4 / 5; overflow: hidden; }
.scene-media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.8) contrast(1.02); transition: transform 0.6s ease; }
.scene-card:hover .scene-media img { transform: scale(1.04); }
.scene-body { padding: 22px; }
.scene-body h3 { font-family: "Songti SC", "Noto Serif SC", Georgia, serif; font-size: 22px; font-weight: 600; }
.scene-body p { margin-top: 8px; color: var(--muted); font-size: 14px; }

.download { background: var(--bg-soft); }
.download-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.platform {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  background: rgba(255, 255, 255, 0.02);
}
.platform strong { font-size: 18px; }
.platform span { color: var(--muted); font-size: 13px; }
.platform:hover { border-color: var(--accent); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
  text-align: center;
}
.footer-brand { font-size: 20px; font-weight: 700; }
.site-footer p { color: var(--muted); margin-top: 8px; }
.footer-meta { font-size: 13px; }

@media (max-width: 960px) {
  .site-nav { display: none; }
  .ethos-grid, .pillar-grid, .module-grid, .scene-grid, .download-row { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
  .hero-stats div { padding: 20px; }
}
@media (max-width: 640px) {
  .section { padding: 80px 0; }
  .ethos-grid, .pillar-grid, .module-grid, .scene-grid, .download-row { grid-template-columns: 1fr; }
  .hero { min-height: 92vh; }
  .hero-content { padding: 100px 0 200px; }
  .hero-stats { grid-template-columns: 1fr; }
  .hero-stats div { border-right: 0; border-bottom: 1px solid var(--line); }
}