:root {
  --font-display: "Kaiti SC", "STKaiti", "KaiTi", "KaiTi_GB2312", "DFKai-SB", serif;
  --font-body: "Kaiti SC", "STKaiti", "KaiTi", "KaiTi_GB2312", "DFKai-SB", serif;
  --font-mono: "Kaiti SC", "STKaiti", "KaiTi", "KaiTi_GB2312", "DFKai-SB", serif;
  --bg: #f6f1e7;
  --bg-deep: #efe4cf;
  --ink: #1f2329;
  --ink-soft: #4b5563;
  --accent-1: #ff6b3d;
  --accent-2: #197278;
  --accent-3: #f4b63d;
  --card: #fff8ee;
  --stroke: rgba(31, 35, 41, 0.12);
  --shadow: 0 24px 60px rgba(31, 35, 41, 0.12);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  line-height: 1.7;
  background: var(--bg);
  background-image:
    radial-gradient(1200px circle at 8% 10%, #ffe1c6 0%, transparent 60%),
    radial-gradient(1000px circle at 92% 18%, #d8f0ea 0%, transparent 55%),
    linear-gradient(180deg, #f6f1e7 0%, #f2e8d7 100%);
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  color: var(--accent-1);
}

.bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 999px;
  opacity: 0.35;
  filter: blur(0.5px);
  animation: float 14s ease-in-out infinite;
}

.orb--one {
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(255, 107, 61, 0.6), transparent 70%);
  top: -80px;
  left: -60px;
}

.orb--two {
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(25, 114, 120, 0.5), transparent 70%);
  bottom: -120px;
  right: -80px;
  animation-delay: -4s;
}

.orb--three {
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(244, 182, 61, 0.55), transparent 70%);
  top: 40%;
  right: 10%;
  animation-delay: -8s;
}

.page {
  width: min(1120px, 92vw);
  margin: 0 auto;
  padding: 48px 0 80px;
}

.hero {
  background: linear-gradient(135deg, rgba(255, 248, 238, 0.95), rgba(255, 248, 238, 0.6));
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 36px 40px;
  animation: heroIn 0.9s ease both;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.nav__brand {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--ink);
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.nav__links a {
  color: var(--ink-soft);
}

.nav__links a:hover {
  color: var(--accent-2);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 32px;
  align-items: start;
}

.hero__intro h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 4vw, 4.4rem);
  margin: 0;
}

.role {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.78rem;
  color: var(--accent-2);
  margin: 8px 0 16px;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  background: rgba(255, 107, 61, 0.12);
  border: 1px solid rgba(255, 107, 61, 0.28);
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.summary {
  margin: 0 0 20px;
  color: var(--ink-soft);
  max-width: 520px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.chip {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(25, 114, 120, 0.12);
  border: 1px solid rgba(25, 114, 120, 0.24);
  font-size: 0.85rem;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}

.impact-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 14px 16px;
  border: 1px solid rgba(31, 35, 41, 0.08);
}

.impact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin: 0 0 6px;
  color: var(--ink-soft);
}

.impact-value {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin: 0 0 4px;
}

.impact-desc {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.hero__panel {
  display: grid;
  gap: 18px;
}

.panel {
  background: #ffffff;
  border-radius: 18px;
  padding: 18px 20px;
  border: 1px solid rgba(31, 35, 41, 0.08);
  box-shadow: 0 12px 30px rgba(31, 35, 41, 0.08);
}

.panel h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 12px;
}

.info-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.info-list li {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 12px;
  align-items: baseline;
  font-size: 0.92rem;
}

.info-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.muted {
  color: var(--ink-soft);
}

.section {
  margin-top: 72px;
}

.section__head {
  margin-bottom: 28px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--accent-2);
  margin: 0 0 10px;
}

.section__head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin: 0 0 8px;
}

.section__desc {
  margin: 0;
  color: var(--ink-soft);
  max-width: 640px;
}

.grid {
  display: grid;
  gap: 18px;
}

.skills-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--card);
  border-radius: 18px;
  padding: 20px;
  border: 1px solid rgba(31, 35, 41, 0.1);
  box-shadow: 0 12px 24px rgba(31, 35, 41, 0.06);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-family: var(--font-display);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list span {
  border: 1px solid rgba(31, 35, 41, 0.16);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.84rem;
  background: #fffdf9;
}

.timeline {
  position: relative;
  margin-top: 24px;
  padding-left: 22px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, rgba(25, 114, 120, 0.6), rgba(255, 107, 61, 0.6));
}

.timeline-item {
  position: relative;
  padding-left: 18px;
  margin-bottom: 32px;
}

.timeline-dot {
  position: absolute;
  left: -4px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: #fff;
  border: 3px solid var(--accent-2);
  box-shadow: 0 0 0 4px rgba(25, 114, 120, 0.12);
}

.timeline-title {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: baseline;
}

.timeline-title h3 {
  margin: 0;
  font-family: var(--font-display);
}

.timeline-title span {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.timeline-time {
  margin: 4px 0 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-2);
}

.list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.list li {
  position: relative;
  padding-left: 18px;
  color: var(--ink-soft);
}

.list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent-1);
}

.project-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.project-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 22px;
  border: 1px solid rgba(31, 35, 41, 0.12);
  box-shadow: 0 18px 32px rgba(31, 35, 41, 0.08);
}

.project-header {
  display: grid;
  gap: 4px;
  margin-bottom: 10px;
}

.project-time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-2);
  margin: 0;
}

.project-stack {
  font-size: 0.85rem;
  margin: 0;
  color: var(--ink-soft);
}

.project-card h3 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
}

.education-card {
  display: grid;
  gap: 12px;
}

.education-detail p {
  margin: 0 0 6px;
  color: var(--ink-soft);
}

.footer {
  margin-top: 72px;
  padding: 24px 0 8px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid rgba(31, 35, 41, 0.12);
  color: var(--ink-soft);
}

.footer-signature {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.72rem;
  color: var(--ink);
}

.no-js .reveal {
  opacity: 1;
  transform: none;
}

.js-on .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js-on .reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.js-on .stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--delay, 0ms);
}

.js-on .stagger > *.in-view {
  opacity: 1;
  transform: translateY(0);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0) translateX(0);
  }
  50% {
    transform: translateY(18px) translateX(-12px);
  }
}

@keyframes heroIn {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }

  .nav__links {
    gap: 10px;
  }
}

@media (max-width: 720px) {
  .page {
    width: min(100%, 92vw);
    padding: 32px 0 64px;
  }

  .hero {
    padding: 24px;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav__links {
    letter-spacing: 0.1em;
  }

  .info-list li {
    grid-template-columns: 72px 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .orb,
  .hero,
  .js-on .reveal {
    animation: none;
    transition: none;
  }
}