:root {
  --bg: #f3f6fb;
  --bg-tint: #eef3fb;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: #ffffff;
  --text: #0f172a;
  --text-dim: rgba(15, 23, 42, 0.66);
  --line: rgba(15, 23, 42, 0.10);
  --line-soft: rgba(15, 23, 42, 0.07);
  --accent: #1a73e8;
  --accent-soft: rgba(26, 115, 232, 0.18);
  --shadow: 0 16px 40px rgba(15, 23, 42, 0.10);
  --shadow-soft: 0 8px 24px rgba(15, 23, 42, 0.08);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(1200px 740px at 50% 0%, rgba(26, 115, 232, 0.08) 0%, transparent 54%),
    radial-gradient(900px 560px at 82% 18%, rgba(26, 115, 232, 0.06) 0%, transparent 46%),
    linear-gradient(180deg, var(--bg-tint) 0%, var(--bg) 55%);
  color: var(--text);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  opacity: 0.9;
}

.site-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.2rem;
}

.site-main {
  padding: 1rem 0 3rem;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
}

.brand {
  color: var(--text);
  font-weight: 700;
}

.navbar ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 1rem;
}

.hero,
.page-header {
  margin: 2.2rem 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.2rem;
  align-items: center;
}

.hero-right {
  display: flex;
  justify-content: flex-end;
}

.avatar {
  width: min(220px, 42vw);
  aspect-ratio: 1 / 1;
  border-radius: 999px;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  background: var(--surface-strong);
  box-shadow:
    0 0 0 8px rgba(26, 115, 232, 0.06),
    var(--shadow);
}

h1 {
  margin: 0.2rem 0 0.8rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.eyebrow {
  color: var(--accent);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
}

.lead {
  margin: 0 0 0.6rem;
  color: var(--text);
  font-size: 1.15rem;
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.52) 88%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1rem;
}

.quick-link-item {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  padding: 0.45rem 0.95rem;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  color: var(--text);
}

.quick-link-item:hover {
  opacity: 1;
  border-color: rgba(26, 115, 232, 0.28);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.10);
}

.quick-link-static {
  cursor: default;
}

.quick-link-static:hover {
  border-color: var(--line-soft);
  box-shadow: none;
}

.social-icon {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.card {
  display: block;
  border: 1px solid transparent;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.86)) padding-box,
    linear-gradient(140deg, rgba(15, 23, 42, 0.10), transparent 55%) border-box;
  border-radius: var(--radius);
  padding: 1.25rem;
  backdrop-filter: blur(12px);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
  box-shadow: var(--shadow-soft);
}

.card:hover {
  transform: translateY(-5px);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.90)) padding-box,
    linear-gradient(140deg, rgba(26, 115, 232, 0.35), transparent 55%) border-box;
  box-shadow:
    var(--shadow),
    0 0 0 4px rgba(26, 115, 232, 0.08);
}

.card h3 {
  margin: 0.2rem 0 0.6rem;
  color: var(--text);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.8rem;
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(15, 23, 42, 0.10);
  background:
    radial-gradient(circle at 35% 30%, rgba(26, 115, 232, 0.18), transparent 58%),
    rgba(26, 115, 232, 0.06);
  box-shadow:
    inset 0 0 0 6px rgba(15, 23, 42, 0.04);
  color: var(--accent);
}

.icon {
  width: 20px;
  height: 20px;
}

.card p {
  margin: 0;
  color: var(--text-dim);
}

.card-meta {
  color: var(--accent);
  font-size: 0.85rem;
}

.card--project {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 16px;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.90), rgba(255, 255, 255, 0.80)) padding-box,
    linear-gradient(130deg, rgba(15, 23, 42, 0.08), rgba(26, 115, 232, 0.04)) border-box;
  transition: transform 220ms ease, box-shadow 240ms ease, border-color 220ms ease, background 220ms ease;
  box-shadow:
    0 6px 12px rgba(15, 23, 42, 0.05),
    0 16px 30px rgba(15, 23, 42, 0.06),
    0 30px 56px rgba(15, 23, 42, 0.04);
}

.card--project .card-top {
  justify-content: flex-end;
}

.card-cover {
  margin: -0.4rem -0.4rem 0.2rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(8, 16, 36, 0.4);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 8px 20px rgba(12, 23, 48, 0.26);
}

.card-cover img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 260ms ease;
}

.card--project:hover .card-cover img {
  transform: scale(1.02);
}

.card--project .card-icon {
  width: 38px;
  height: 38px;
}

.card--project h3 {
  margin: 0;
  font-size: clamp(1.2rem, 2.3vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card--project p {
  font-size: 0.95rem;
  line-height: 1.62;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.card-tag {
  border: 1px solid rgba(15, 23, 42, 0.10);
  border-radius: 999px;
  padding: 0.2rem 0.58rem;
  background: rgba(26, 115, 232, 0.10);
  color: rgba(15, 23, 42, 0.82);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.card--project:hover {
  transform: translateY(-6px);
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.88)) padding-box,
    linear-gradient(130deg, rgba(26, 115, 232, 0.42), rgba(26, 115, 232, 0.10)) border-box;
  border-color: rgba(26, 115, 232, 0.24);
  box-shadow:
    0 12px 20px rgba(15, 23, 42, 0.08),
    0 24px 42px rgba(15, 23, 42, 0.10),
    0 40px 70px rgba(26, 115, 232, 0.09);
}

.card--project:active {
  transform: translateY(-2px) scale(0.986);
}

.card-cta {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 700;
}

.card-cta svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  transition: transform 200ms ease;
}

.card--project:hover .card-cta svg {
  transform: translateX(3px);
}

.markdown {
  border-top: 1px solid var(--line-soft);
  padding-top: 1rem;
}

.markdown h2,
.markdown h3 {
  margin-top: 1.5rem;
}

@media (max-width: 720px) {
  .navbar {
    flex-direction: column;
    gap: 0.8rem;
    align-items: flex-start;
  }

  .navbar ul {
    flex-wrap: wrap;
    gap: 0.8rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-right {
    justify-content: flex-start;
  }
}