/* Aether Infinity — 官网共享样式 */
:root {
  --red: #c7423f;
  --red-dark: #b23734;
  --black: #111111;
  --ink: #222222;
  --muted: #555555;
  --white: #ffffff;
  --max-width: 1120px;
  --font-display: "Oswald", "Arial Narrow", "PingFang SC", sans-serif;
  --font-body: "Roboto", "Helvetica Neue", Arial, "PingFang SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

/* ============ 顶部导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.25s ease;
}

.site-header.is-solid {
  background: var(--red);
}

.site-header.is-dark {
  background: var(--black);
}

.nav-inner {
  width: 100%;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: 0.5px;
  color: var(--white);
  text-decoration: none;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-menu a {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 6px;
  color: var(--white);
  text-decoration: none;
  font-size: 16px;
  transition: background 0.2s ease;
}

.nav-menu a:hover {
  background: rgba(0, 0, 0, 0.25);
}

.nav-menu a.active {
  background: var(--black);
}

.nav-search {
  color: var(--white);
  display: inline-flex;
  padding: 8px;
  opacity: 0.9;
}

/* ============ 首页 Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  background:
    linear-gradient(rgba(5, 10, 5, 0.28), rgba(5, 10, 5, 0.38)),
    url("hero.jpg") center 30% / cover no-repeat, #0a0f0a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 120px;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--white);
  font-size: clamp(42px, 8vw, 104px);
  line-height: 1.02;
  letter-spacing: 1px;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.45);
  max-width: 1000px;
}

.hero-rule {
  width: min(720px, 78%);
  height: 12px;
  background: var(--red);
  margin: 34px auto 30px;
  border-radius: 2px;
}

.hero-quote {
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(15px, 2vw, 21px);
  letter-spacing: 0.5px;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.5);
}

.hero-quote em {
  font-style: normal;
  font-weight: 300;
  opacity: 0.92;
}

.scroll-hint {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.85);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 10px); }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-hint { animation: none; }
}

/* ============ 内页红色横幅 ============ */
.page-banner {
  background: var(--red);
  color: var(--white);
  text-align: center;
  padding: 132px 24px 56px;
}

.page-banner h1 {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  font-size: clamp(34px, 5vw, 52px);
  letter-spacing: 2px;
}

/* ============ 内容区 ============ */
.content {
  max-width: 960px;
  margin: 0 auto;
  padding: 56px 24px 72px;
}

.content h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 24px;
  margin: 42px 0 16px;
  color: var(--black);
}

.content h2:first-child {
  margin-top: 0;
}

.content p {
  margin-bottom: 18px;
  color: var(--ink);
}

.content a {
  color: var(--red);
}

.content ul.facts {
  list-style: none;
  margin: 0 0 18px;
}

.content ul.facts li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 16px;
}

.content ul.facts li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 8px;
  height: 8px;
  background: var(--ink);
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--red);
  color: var(--white);
}

.footer-links {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 42px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 24px 64px;
  justify-content: center;
}

.footer-links a {
  color: var(--white);
  font-style: italic;
  font-weight: 500;
  text-decoration: underline;
}

.footer-copy {
  background: var(--red);
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  text-align: center;
  padding: 14px 24px 18px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.95);
}

/* ============ 响应式 ============ */
@media (max-width: 720px) {
  .nav-inner {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-menu {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-menu a {
    padding: 6px 12px;
    font-size: 15px;
  }

  .hero {
    padding: 170px 18px 110px;
  }

  .hero-rule {
    height: 8px;
    margin: 24px auto 20px;
  }
}