:root {
  --bg: #08090d;
  --panel: rgba(255, 255, 255, 0.035);
  --panel-strong: rgba(255, 255, 255, 0.06);
  --text: #e9eef7;
  --muted: #97a1b5;
  --line: rgba(255, 255, 255, 0.09);
  --accent: #7dd3fc;
  --accent-2: #c4b5fd;
  --green: #34d399;
  --amber: #fbbf24;
  --radius: 18px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(55rem 55rem at 8% -10%, rgba(125, 211, 252, 0.12), transparent 62%),
    radial-gradient(48rem 48rem at 95% 6%, rgba(196, 181, 253, 0.11), transparent 60%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 25%, transparent 72%);
  mask-image: radial-gradient(ellipse at 50% 0%, #000 25%, transparent 72%);
  pointer-events: none;
}

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

p {
  margin: 0;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- Navigation ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem clamp(1rem, 5vw, 3.5rem);
  background: rgba(8, 9, 13, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.logo {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 0.35rem;
}

.nav-links a {
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--panel-strong);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 38px;
  padding: 0 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
}

/* ---------- Layout ---------- */

main {
  width: min(1120px, calc(100% - 2 * clamp(1rem, 5vw, 3rem)));
  margin: 0 auto;
}

.section {
  padding: clamp(3.5rem, 9vw, 6.5rem) 0;
  border-top: 1px solid var(--line);
}

.section-label {
  margin-bottom: 0.6rem;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.section h2 {
  margin: 0 0 2.2rem;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

/* ---------- Hero ---------- */

.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: min(86vh, 760px);
  padding: clamp(3rem, 9vw, 6rem) 0 clamp(3rem, 7vw, 5rem);
  animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

.eyebrow {
  color: var(--muted);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
}

.hero h1 {
  margin: 0.4rem 0 0.15rem;
  font-size: clamp(3.2rem, 11vw, 6.8rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  background: linear-gradient(100deg, #ffffff 10%, #bae6fd 48%, #c4b5fd 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.name-en {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: clamp(0.82rem, 1.4vw, 1rem);
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.lede {
  max-width: 34rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  width: fit-content;
  margin-top: 1.4rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  font-size: 0.78rem;
}

.status .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2.2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.45);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(52, 211, 153, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0);
  }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.5rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06070b;
  box-shadow: 0 10px 30px rgba(125, 211, 252, 0.18);
}

.btn.ghost {
  border: 1px solid var(--line);
  color: var(--text);
}

.btn.ghost:hover {
  border-color: rgba(125, 211, 252, 0.45);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.6rem;
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.hero-meta li {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.hero-meta li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- About ---------- */

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem 2.5rem;
  max-width: 60rem;
  color: var(--muted);
}

/* ---------- Projects ---------- */

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.1rem;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 1.6rem;
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(125, 211, 252, 0.32);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.card-cover {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 76px;
  margin-bottom: 1rem;
  padding-right: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.card-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 0 1px,
    transparent 1px 22px
  );
}

.card-cover span {
  position: relative;
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.2);
}

.cover-1 {
  background: linear-gradient(135deg, rgba(125, 211, 252, 0.24), rgba(59, 130, 246, 0.06));
}

.cover-2 {
  background: linear-gradient(135deg, rgba(196, 181, 253, 0.24), rgba(139, 92, 246, 0.06));
}

.cover-3 {
  background: linear-gradient(135deg, rgba(134, 239, 172, 0.2), rgba(16, 185, 129, 0.06));
}

.cover-4 {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(244, 63, 94, 0.06));
}

.cover-5 {
  background: linear-gradient(135deg, rgba(244, 114, 182, 0.2), rgba(167, 139, 250, 0.06));
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.card-index {
  color: rgba(255, 255, 255, 0.28);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
}

.badge {
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
}

.badge.live {
  color: var(--green);
  border-color: rgba(52, 211, 153, 0.3);
  background: rgba(52, 211, 153, 0.08);
}

.badge.wip {
  color: var(--amber);
  border-color: rgba(251, 191, 36, 0.3);
  background: rgba(251, 191, 36, 0.08);
}

.badge.done {
  color: var(--muted);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.card h3 {
  margin: 0 0 0.7rem;
  font-size: 1.22rem;
  line-height: 1.4;
}

.card > p {
  color: var(--muted);
  font-size: 0.93rem;
}

.card-list {
  margin: 1rem 0 1.2rem;
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.card-list li {
  position: relative;
  padding-left: 1rem;
}

.card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(125, 211, 252, 0.6);
}

/* ---------- Tags ---------- */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: auto;
}

.tags li {
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.76rem;
  color: #b9e6ff;
  background: rgba(125, 211, 252, 0.08);
  border: 1px solid rgba(125, 211, 252, 0.16);
}

/* ---------- Skills ---------- */

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.6rem 2.5rem;
}

.skill-group h3 {
  margin: 0 0 0.8rem;
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.06em;
}

/* ---------- Contact ---------- */

.contact-note {
  margin: -1.2rem 0 1.6rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.contact-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  max-width: 46rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.2rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.contact-item:hover {
  border-color: rgba(125, 211, 252, 0.4);
  transform: translateY(-2px);
}

.contact-kicker {
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
}

.contact-value {
  font-size: 1rem;
  word-break: break-all;
}

/* ---------- Footer ---------- */

.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  width: min(1120px, calc(100% - 2 * clamp(1rem, 5vw, 3rem)));
  margin: 0 auto;
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.footer a:hover {
  color: var(--text);
}

/* ---------- Motion ---------- */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.65s ease, transform 0.65s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Mobile ---------- */

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 1rem;
    right: 1rem;
    display: none;
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.6rem;
    background: rgba(14, 16, 23, 0.97);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  }

  .nav.open .nav-links {
    display: flex;
  }

  .nav-links a {
    padding: 0.65rem 0.9rem;
  }

  .hero {
    min-height: auto;
    padding-top: 4rem;
  }

  .hero-meta {
    margin-top: 2rem;
    gap: 0.4rem 1.2rem;
  }

  .card {
    padding: 1.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Print ---------- */

@media print {
  body {
    background: #fff;
    color: #111;
  }

  body::before,
  body::after,
  .nav,
  .hero-actions,
  .status,
  .card-cover {
    display: none !important;
  }

  main {
    width: 100%;
  }

  .section {
    padding: 1.2rem 0;
    border-top: 1px solid #ddd;
    break-inside: avoid;
  }

  .card {
    background: #fff;
    border: 1px solid #ddd;
    box-shadow: none;
    break-inside: avoid;
  }

  .card > p,
  .card-list,
  .about-grid,
  .contact-kicker,
  .contact-value {
    color: #333;
  }

  .tags li {
    background: none;
    border-color: #ccc;
    color: #333;
  }

  .badge {
    background: none;
  }

  a {
    color: #111;
  }

  .footer {
    border-top: 1px solid #ddd;
    color: #333;
  }
}