/* CSS makes HTML look nice. */
:root {
  --bg0: #0b1020;
  --bg1: #0f1633;
  --card: rgba(255, 255, 255, 0.08);
  --card2: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --line: rgba(255, 255, 255, 0.16);
  --accent: #7c4dff;
  --accent2: #00d4ff;
  --accent3: #ff4fd8;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
  --radius: 18px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(900px 600px at 10% 10%, rgba(124, 77, 255, 0.35), transparent 60%),
    radial-gradient(900px 600px at 90% 15%, rgba(0, 212, 255, 0.25), transparent 55%),
    radial-gradient(900px 600px at 60% 85%, rgba(255, 79, 216, 0.18), transparent 55%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
}

main, header, footer {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.页头 {
  padding: 2.25rem 0 1.25rem;
}

.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.25rem;
  align-items: center;
  padding: 1.25rem;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(124, 77, 255, 0.18), rgba(0, 212, 255, 0.10));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero__text h1 {
  margin: 0;
  font-size: clamp(2rem, 3.5vw, 3rem);
  letter-spacing: -0.02em;
}

.副标题 {
  margin: 0.35rem 0 0.25rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.标语 {
  margin: 0.25rem 0 0.9rem;
  font-size: 1.05rem;
}

.导航 {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.导航 a {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
}

.导航 a:hover {
  background: rgba(255, 255, 255, 0.10);
}

.hero__avatar {
  width: 220px;
  height: 220px;
  border-radius: 999px;
  padding: 6px;
  background: conic-gradient(from 180deg, var(--accent), var(--accent2), var(--accent3), var(--accent));
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
}

.hero__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 999px;
  display: block;
  background: rgba(255, 255, 255, 0.10);
}

.一块内容 {
  margin: 1rem auto;
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.06));
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(8px);
}

.一块内容 h2 {
  margin: 0 0 0.6rem;
  letter-spacing: -0.01em;
}

.次要文字 {
  color: var(--muted);
  margin-top: 0.25rem;
}

ul {
  padding-left: 1.1rem;
  margin: 0.5rem 0 0;
}

.网格 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 0.85rem;
}

.卡片 {
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  padding: 1rem;
}

.卡片 h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.卡片 p {
  margin: 0 0 0.85rem;
  color: var(--muted);
}

.按钮 {
  appearance: none;
  border: 0;
  cursor: pointer;
  color: #07101f;
  font-weight: 700;
  padding: 0.6rem 0.9rem;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent2), var(--accent3));
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
  text-decoration: none;
  display: inline-block;
}

.按钮:hover {
  filter: brightness(1.05);
}

.按钮.次要 {
  background: rgba(255, 255, 255, 0.10);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.按钮[aria-disabled="true"] {
  opacity: 0.65;
  pointer-events: none;
}

.时间线 {
  list-style: none;
  padding-left: 0;
  margin: 0.8rem 0 0;
}

.时间线 li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 0.75rem;
  align-items: start;
  padding: 0.6rem 0;
}

.时间线__点 {
  width: 14px;
  height: 14px;
  margin-top: 0.3rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  box-shadow: 0 0 0 5px rgba(124, 77, 255, 0.16);
}

.时间线__时间 {
  font-weight: 700;
}

.时间线__事件 {
  color: var(--muted);
  margin-top: 0.15rem;
}

.鼓励区 {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-top: 0.75rem;
}

.计数 {
  color: var(--muted);
  padding: 0.55rem 0.75rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
}

.联系链接 {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.35);
}

.联系链接:hover {
  border-bottom-color: rgba(255, 255, 255, 0.75);
}

.页脚 {
  padding: 2rem 0 2.5rem;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .hero__avatar {
    width: 160px;
    height: 160px;
  }
  .网格 {
    grid-template-columns: 1fr;
  }
}