:root {
  --bg: #0a0b14;
  --bg-soft: #11131f;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-border: rgba(255, 255, 255, 0.09);
  --text: #e9ecf5;
  --text-dim: #9aa0b5;
  --accent: #7c5cff;
  --accent-2: #22d3ee;
  --accent-3: #ff7ac6;
  --radius: 18px;
  --maxw: 1140px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ---------- 背景 ---------- */
.bg-aurora {
  position: fixed;
  inset: -20% -10% auto -10%;
  height: 60vh;
  background:
    radial-gradient(40% 60% at 20% 30%, rgba(124, 92, 255, 0.35), transparent 60%),
    radial-gradient(35% 55% at 75% 20%, rgba(34, 211, 238, 0.28), transparent 60%),
    radial-gradient(30% 50% at 55% 60%, rgba(255, 122, 198, 0.22), transparent 60%);
  filter: blur(40px);
  z-index: -2;
  pointer-events: none;
}
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 75%);
  z-index: -1;
  pointer-events: none;
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 24px;
  backdrop-filter: blur(12px);
  background: rgba(10, 11, 20, 0.55);
  border-bottom: 1px solid var(--panel-border);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.brand-mark {
  display: grid; place-items: center;
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-size: 16px;
}
.nav-links { display: flex; gap: 28px; font-size: 15px; color: var(--text-dim); }
.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 999px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 24px rgba(124, 92, 255, 0.35);
}
.btn-primary:hover { box-shadow: 0 10px 30px rgba(124, 92, 255, 0.5); }
.btn-ghost { background: var(--panel); border-color: var(--panel-border); color: var(--text); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }

/* ---------- 英雄区 ---------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 90px 24px 60px;
  text-align: center;
}
.hero-badge {
  display: inline-block;
  padding: 7px 16px; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--panel-border);
  font-size: 14px; color: var(--text-dim); margin-bottom: 26px;
}
.hero-title {
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.15; font-weight: 800; letter-spacing: -0.5px;
}
.grad {
  background: linear-gradient(120deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  max-width: 620px; margin: 22px auto 0; color: var(--text-dim); font-size: 17px;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; margin-top: 34px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 44px; justify-content: center; margin-top: 56px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; align-items: center; }
.stat-num { font-size: 38px; font-weight: 800; background: linear-gradient(120deg, var(--accent-2), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-label { color: var(--text-dim); font-size: 14px; }

/* ---------- 区块标题 ---------- */
.section-head { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; text-align: center; }
.section-head h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 800; }
.section-head p { color: var(--text-dim); margin-top: 8px; }

/* ---------- 作品 ---------- */
.works { padding: 80px 0; }
.filters {
  display: flex; gap: 10px; justify-content: center; flex-wrap: wrap;
  max-width: var(--maxw); margin: 28px auto 40px; padding: 0 24px;
}
.chip {
  padding: 9px 18px; border-radius: 999px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--panel-border);
  color: var(--text-dim); font-size: 14px; font-weight: 600; transition: all 0.2s;
}
.chip:hover { color: var(--text); border-color: rgba(124, 92, 255, 0.5); }
.chip.is-active {
  color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
}
.grid {
  display: grid; gap: 22px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
}
.card {
  position: relative;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: var(--radius); overflow: hidden; cursor: pointer;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
  display: flex; flex-direction: column;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 92, 255, 0.55);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}
.card-cover {
  height: 150px; position: relative; overflow: hidden;
  display: grid; place-items: center; font-size: 54px;
}
.card-cover::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent, rgba(10, 11, 20, 0.6));
}
.card-cat {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  padding: 4px 11px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: rgba(0, 0, 0, 0.45); border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
}
.card-body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-title { font-size: 18px; font-weight: 700; }
.card-desc { color: var(--text-dim); font-size: 14px; flex: 1; }
.card-tags { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 4px; }
.tag {
  font-size: 12px; color: var(--text-dim);
  padding: 3px 10px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.05); border: 1px solid var(--panel-border);
}
.card-link {
  margin-top: 10px; font-size: 14px; font-weight: 600; color: var(--accent-2);
  display: inline-flex; align-items: center; gap: 6px;
}
.card-link .arrow { transition: transform 0.2s; }
.card:hover .card-link .arrow { transform: translateX(4px); }

/* ---------- 关于 ---------- */
.about { padding: 40px 0 80px; }
.about-card {
  max-width: var(--maxw); margin: 0 auto; padding: 36px;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 24px; display: flex; gap: 32px; align-items: center; flex-wrap: wrap;
}
.about-avatar {
  width: 96px; height: 96px; border-radius: 24px; flex-shrink: 0;
  display: grid; place-items: center; font-size: 46px;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
}
.about-body { flex: 1; min-width: 260px; }
.about-body h2 { font-size: 26px; font-weight: 800; margin-bottom: 12px; }
.about-body p { color: var(--text-dim); margin-bottom: 10px; }
.about-skills { list-style: none; display: flex; gap: 9px; flex-wrap: wrap; margin-top: 16px; }
.about-skills li {
  font-size: 13px; padding: 6px 13px; border-radius: 999px;
  background: rgba(124, 92, 255, 0.12); border: 1px solid rgba(124, 92, 255, 0.3); color: #cdbfff;
}

/* ---------- 联系 ---------- */
.contact { padding: 0 0 90px; }
.contact-inner {
  max-width: 760px; margin: 0 auto; text-align: center; padding: 50px 32px;
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.12), rgba(34, 211, 238, 0.1));
  border: 1px solid var(--panel-border); border-radius: 24px;
}
.contact-inner h2 { font-size: clamp(24px, 4vw, 34px); font-weight: 800; }
.contact-inner p { color: var(--text-dim); margin: 12px 0 26px; }
.contact-meta { margin-top: 18px; color: var(--text-dim); font-size: 14px; }

/* ---------- 页脚 ---------- */
.footer {
  max-width: var(--maxw); margin: 0 auto; padding: 28px 24px 50px;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--text-dim); font-size: 14px; flex-wrap: wrap; gap: 12px;
  border-top: 1px solid var(--panel-border);
}
.footer a:hover { color: var(--text); }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s, transform 0.6s; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .hero-stats { gap: 28px; }
  .about-card { padding: 24px; text-align: center; justify-content: center; }
}