:root {
  --bg-image: radial-gradient(circle at 20% 20%, #10203a 0%, #0a111f 40%, #05080f 100%);
  --bg-overlay: rgba(7, 10, 18, 0.62);
  --bg-blur: 0px;
  --text-primary: #eef2ff;
  --text-muted: #a7b0c3;
  --accent: #6ee7ff;
  --accent-2: #8b5cf6;
  --card-bg: rgba(255, 255, 255, 0.08);
  --card-border: rgba(255, 255, 255, 0.18);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --card-hover-bg: rgba(255, 255, 255, 0.1);
  --card-hover-border: rgba(255, 255, 255, 0.32);
  --card-hover-shadow: 0 24px 56px rgba(0, 0, 0, 0.42);
  --card-hover-lift-y: -2px;
  --base-card-hover-bg: var(--card-hover-bg);
  --base-card-hover-border: var(--card-hover-border);
  --base-card-hover-shadow: var(--card-hover-shadow);
  --base-card-hover-lift-y: var(--card-hover-lift-y);
  --radius: 18px;
  --glass-blur: 18px;
  --font-body: "Space Grotesk", "Segoe UI", sans-serif;
  --font-display: "Cormorant Garamond", "Times New Roman", serif;
  --font-mono: "JetBrains Mono", "Consolas", monospace;
}

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

html, body {
  height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: #05080f;
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background: var(--bg-image) no-repeat center center / cover;
  filter: blur(var(--bg-blur));
  transform: scale(1.05);
  transform-origin: center;
  z-index: -2;
}

body::after {
  background: var(--bg-overlay);
  z-index: -1;
}

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

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

main {
  min-height: 100vh;
  padding: 48px clamp(20px, 4vw, 64px);
}

.glass {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.card {
  padding: 28px;
}

.card,
.project-card,
.publication-item,
.publication-grid-item {
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.card:hover,
.project-card:hover,
.publication-item:hover,
.publication-grid-item:hover {
  transform: translateY(var(--card-hover-lift-y));
  border-color: var(--card-hover-border);
  background: var(--card-hover-bg);
  box-shadow: var(--card-hover-shadow);
}

.card:hover {
  transform: translateY(var(--base-card-hover-lift-y));
  border-color: var(--base-card-hover-border);
  background: var(--base-card-hover-bg);
  box-shadow: var(--base-card-hover-shadow);
}

.card h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 26px;
  margin-bottom: 16px;
}

.badge {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 12px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  font-size: 14px;
  transition: transform 0.2s ease, background 0.2s ease, border 0.2s ease;
}

.icon-btn-icon {
  width: 16px;
  height: 16px;
  display: block;
  flex: 0 0 auto;
}

.icon-btn:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.4);
}

.icon-btn--github {
  background: rgba(36, 41, 46, 0.45);
  border-color: rgba(110, 118, 129, 0.55);
  color: #f0f6fc;
}

.icon-btn--bilibili {
  background: rgba(251, 114, 153, 0.28);
  border-color: rgba(251, 114, 153, 0.62);
  color: #ffe8f1;
}

.icon-btn--google-scholar {
  background: rgba(66, 133, 244, 0.3);
  border-color: rgba(66, 133, 244, 0.6);
  color: #e5eeff;
}

.icon-btn--csdn {
  background: rgba(252, 85, 49, 0.3);
  border-color: rgba(252, 85, 49, 0.62);
  color: #ffebe6;
}

.icon-btn--orcid {
  background: rgba(166, 206, 57, 0.3);
  border-color: rgba(166, 206, 57, 0.62);
  color: #f3ffe0;
}

.icon-btn--huggingface {
  background: rgba(255, 193, 7, 0.3);
  border-color: rgba(255, 193, 7, 0.62);
  color: #fff7d6;
}

.icon-btn--github:hover {
  background: rgba(36, 41, 46, 0.68);
  border-color: rgba(110, 118, 129, 0.78);
}

.icon-btn--bilibili:hover {
  background: rgba(251, 114, 153, 0.46);
  border-color: rgba(251, 114, 153, 0.84);
}

.icon-btn--google-scholar:hover {
  background: rgba(66, 133, 244, 0.46);
  border-color: rgba(66, 133, 244, 0.82);
}

.icon-btn--csdn:hover {
  background: rgba(252, 85, 49, 0.46);
  border-color: rgba(252, 85, 49, 0.82);
}

.icon-btn--orcid:hover {
  background: rgba(166, 206, 57, 0.46);
  border-color: rgba(166, 206, 57, 0.82);
}

.icon-btn--huggingface:hover {
  background: rgba(255, 193, 7, 0.46);
  border-color: rgba(255, 193, 7, 0.82);
}

.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.section-title span {
  font-family: var(--font-display);
  font-size: 24px;
}

@media (max-width: 1000px) {
  main {
    padding: 36px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}