@charset "UTF-8";

:root {
  --bg-main: #f6f5f2;
  --bg-soft: #ebeae6;
  --bg-dark: #2f2f2c;
  --text-main: #2b2b2b;
  --text-light: #e8e8e6;
  --accent: #9c9a6e;
}

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

body {
  font-family: "PingFang SC", "Noto Serif SC", serif;
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.8;
}

/* 头部 */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 20px 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(246,245,242,0.85);
  backdrop-filter: blur(8px);
  z-index: 100;
}

.logo {
  font-size: 22px;
  letter-spacing: 4px;
}

nav a {
  margin-left: 30px;
  text-decoration: none;
  color: var(--text-main);
  font-size: 14px;
}

/* 首屏 */
.hero {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  letter-spacing: 6px;
}

.hero p {
  margin-top: 20px;
  font-size: 16px;
  opacity: 0.8;
}

.scroll-hint {
  position: absolute;
  bottom: 30px;
  font-size: 18px;
  opacity: 0.5;
}

/* 区块 */
.section {
  padding: 140px 20%;
  text-align: center;
}

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

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

h2 {
  font-size: 32px;
  letter-spacing: 4px;
}

.subtitle {
  margin-top: 12px;
  font-size: 14px;
  color: var(--accent);
}

.text {
  margin-top: 40px;
  font-size: 16px;
}

.text.light {
  color: var(--text-light);
}

.energy-list {
  margin-top: 60px;
  display: flex;
  justify-content: center;
  gap: 40px;
}

.energy-item {
  padding: 20px 30px;
  border: 1px solid var(--accent);
  font-size: 14px;
}

.quote {
  margin-top: 60px;
  font-size: 18px;
  font-style: italic;
  opacity: 0.8;
}

/* 按钮 */
.btn {
  margin-top: 40px;
  padding: 14px 40px;
  background: transparent;
  border: 1px solid var(--text-light);
  color: var(--text-light);
  cursor: pointer;
  letter-spacing: 2px;
}

/* 动画 */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: all 1.2s ease;
}

.fade-in.show {
  opacity: 1;
  transform: translateY(0);
}

/* 底部 */
.footer {
  padding: 40px;
  text-align: center;
  font-size: 12px;
  opacity: 0.6;
}