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

:root {
  --bg:     #FAFAF7;
  --amber:  #D97706;
  --dark:   #1A1A1A;
  --muted:  #6B6B65;
  --line:   rgba(0,0,0,0.1);
  --tag-bg: #F5F0E8;
}

html, body {
  height: 100%;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: 'Archivo', 'PingFang SC', sans-serif;
  background: var(--bg);
  color: var(--dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Layout ── */
.layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Header ── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.4rem;
  height: 52px;
  border-bottom: 2px solid var(--amber);
  flex-shrink: 0;
}

.header-brand {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
}

.header-dot  { opacity: 0.35; }
.header-alias { font-weight: 500; font-size: 0.9rem; color: var(--muted); }

.header-nav {
  display: flex;
  gap: 1.4rem;
}

.header-nav a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  transition: color 150ms;
}

.header-nav a:hover { color: var(--amber); }

/* ── Main grid ── */
.grid {
  display: grid;
  grid-template-columns: 38.2fr 61.8fr;
  grid-template-rows: 38.2fr 61.8fr;
  flex: 1;
  border-bottom: 1px solid var(--line);
}

/* cell base */
.cell {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
}

/* Contact spans top-right two columns */

.cell-exp {
  grid-column: 2;
  grid-row: 1;
  border-bottom: 1px solid var(--line);
}

.cell-projects {
  grid-column: 2;
  grid-row: 2;
  border-right: none;
}

/* Hero spans 2 rows */
.cell-hero {
  grid-row: 1 / 3;
  border-bottom: none;
  justify-content: space-between;
}

/* ── Cell label ── */
.cell-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── Hero ── */
.hero-top {
  display: flex;
  flex-direction: column;
}

.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.5rem;
}

.hero-title {
  font-family: 'Archivo', sans-serif;
  font-size: clamp(3.5rem, 8vw, 6rem);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--dark);
}

.hero-alias {
  font-family: 'Archivo', sans-serif;
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--amber);
  margin-top: 0.6rem;
}

.hero-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 1rem;
}

/* ── Tags ── */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  border: 1px solid var(--amber);
  border-radius: 999px;
  padding: 0.28rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--tag-bg);
  color: var(--dark);
  transition: background 150ms, color 150ms;
  cursor: default;
}

.tag:hover {
  background: var(--amber);
  color: #fff;
}

/* ── Contact icons ── */
.contact-icons {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--tag-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark);
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  transition: background 150ms, color 150ms, transform 150ms;
}

.icon-btn:hover {
  background: var(--amber);
  color: #fff;
  transform: translateY(-1px);
}

/* ── Experience ── */
.exp-entries {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.exp-entry {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.exp-logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  overflow: hidden;
  background: #1a6db5;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.exp-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.exp-logo-ks {
  background: #fff;
}

.exp-info {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.exp-co {
  font-weight: 600;
  font-size: 0.88rem;
}

.exp-yr {
  font-size: 0.75rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* ── Projects ── */
.proj-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.proj-list li {
  border-top: 1px solid var(--line);
}

.proj-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.proj-list a {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.42rem 0.4rem;
  text-decoration: none;
  color: var(--dark);
  border-left: 2px solid transparent;
  margin-left: -0.4rem;
  transition: border-color 150ms, background 150ms;
}

.proj-list a:hover {
  border-left-color: var(--amber);
  background: rgba(217,119,6,0.05);
}

.pn {
  font-family: 'Archivo', monospace;
  font-weight: 700;
  font-size: 0.8rem;
  white-space: nowrap;
}

.pd {
  font-size: 0.76rem;
  color: var(--muted);
}

/* ── Footer ── */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.4rem;
  height: 40px;
  font-size: 0.75rem;
  color: var(--muted);
  flex-shrink: 0;
}

/* ── WeChat popup ── */
.wechat-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.wechat-overlay.open { display: flex; }

.wechat-popup {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 2rem 2.4rem;
  text-align: center;
  box-shadow: 0 24px 64px rgba(0,0,0,0.18);
  animation: pop-in 160ms ease;
}

@keyframes pop-in {
  from { opacity: 0; transform: scale(0.93); }
  to   { opacity: 1; transform: scale(1); }
}

.wechat-popup-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.wechat-popup-id {
  font-family: 'Archivo', monospace;
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0.5rem 0 1.2rem;
  letter-spacing: -0.01em;
}

.wechat-copy-btn {
  background: var(--amber);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.55rem 1.6rem;
  font-size: 0.88rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 150ms;
}

.wechat-copy-btn:hover { opacity: 0.85; }

/* ── Responsive ── */
@media (max-width: 680px) {
  .grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .cell-hero {
    grid-row: auto;
    border-bottom: 1px solid var(--line);
  }

  .cell-exp {
    grid-column: auto;
    grid-row: auto;
    border-bottom: 1px solid var(--line);
  }

  .cell-projects {
    grid-column: auto;
    grid-row: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .cell { border-right: none; }

  .hero-title { font-size: clamp(3.2rem, 18vw, 5rem); }

  .hero-alias { font-size: 1.2rem; }

  .contact-icons { gap: 0.45rem; }

  .icon-btn { width: 46px; height: 46px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important;
    transition-duration: 1ms !important;
  }
}