@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;1,300;1,400&family=DM+Sans:wght@300;400;500&display=swap');

:root {
  --cream:        #F2EAD8;
  --cream-dark:   #E8DFC9;
  --ink:          #1A120A;
  --ink-mid:      #5C4A35;
  --ink-soft:     #9C8570;
  --accent:       #8B5E3C;
  --accent-light: #C4956A;
  --border:       rgba(90, 65, 40, 0.12);
  --border-mid:   rgba(90, 65, 40, 0.22);
  --sidebar-w:    200px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--cream);
  color: var(--ink);
  font-family: 'DM Sans', sans-serif;
  font-weight: 300;
  line-height: 1.7;
  min-height: 100vh;
}

/* ─── Page Wrapper（居中容器）────────────────────── */

.page-wrapper {
  max-width: 1020px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  position: relative;
}

/* ─── Sidebar ─────────────────────────────────────── */

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 3rem 0 3rem 2rem;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
}

.sidebar-brand {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.02em;
  margin-bottom: 3.5rem;
  display: block;
}

.sidebar-brand em {
  font-style: italic;
  color: var(--accent);
}

nav { flex: 1; }

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.nav-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  transition: color 0.2s;
  padding-right: 1.5rem;
}

.nav-item a::before {
  content: '';
  display: inline-block;
  height: 1px;
  width: 14px;
  background: currentColor;
  margin-right: 0.75rem;
  flex-shrink: 0;
  transition: width 0.25s ease;
}

.nav-item a .nav-num {
  font-size: 0.65rem;
  color: var(--border-mid);
  letter-spacing: 0.06em;
}

.nav-item a:hover { color: var(--ink-mid); }
.nav-item a:hover::before { width: 20px; }

.nav-item a.active { color: var(--accent); }
.nav-item a.active::before { width: 26px; background: var(--accent); }

.sidebar-footer {
  font-size: 0.68rem;
  color: var(--ink-soft);
  letter-spacing: 0.03em;
  padding-right: 1rem;
  line-height: 1.6;
}

/* ─── Main ────────────────────────────────────────── */

.main {
  flex: 1;
  min-width: 0;
  padding: 0 3.5rem;
}

section {
  padding: 7rem 0;
  border-bottom: 1px solid var(--border);
}

section:last-child { border-bottom: none; }

.section-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 2.75rem;
  display: block;
}

/* ─── Hero ────────────────────────────────────────── */

#hero { padding-top: 8rem; }

.hero-eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--accent-light);
}

.hero-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2.6rem, 4vw, 3.6rem);
  font-weight: 300;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 2rem;
  letter-spacing: -0.01em;
}

.hero-title em {
  font-style: italic;
  color: var(--accent);
}

.hero-desc {
  font-size: 0.98rem;
  color: var(--ink-mid);
  max-width: 440px;
  line-height: 1.85;
  margin-bottom: 3rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.btn-primary {
  background: var(--ink);
  color: var(--cream);
  padding: 0.7rem 1.6rem;
  border-radius: 2px;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  transition: transform 0.15s, background 0.2s;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-1px);
  background: var(--accent);
}

.btn-ghost {
  color: var(--ink-mid);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.btn-ghost::after {
  content: ' →';
  display: inline-block;
  transition: transform 0.2s;
}

.btn-ghost:hover { color: var(--accent); }
.btn-ghost:hover::after { transform: translate(3px, -2px); }

/* ─── Stats ───────────────────────────────────────── */

.stats-row {
  display: flex;
  gap: 3rem;
  padding-top: 3.5rem;
  border-top: 1px solid var(--border);
  margin-top: 3.5rem;
}

.stat-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.2rem;
  font-weight: 300;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ─── About ───────────────────────────────────────── */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.1rem;
  font-weight: 300;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 1.5rem;
}

.about-title em {
  font-style: italic;
  color: var(--accent);
}

.about-text {
  color: var(--ink-mid);
  font-size: 0.93rem;
  line-height: 1.85;
  margin-bottom: 1rem;
}

.skills-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.skill-group {
  background: var(--cream);
  padding: 1.4rem 1.5rem;
  transition: background 0.2s;
}

.skill-group:hover { background: var(--cream-dark); }

.skill-group-name {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}

.skill-list {
  font-size: 0.85rem;
  color: var(--ink-mid);
  line-height: 1.7;
}

/* ─── Projects ────────────────────────────────────── */

.projects-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2.75rem;
}

.projects-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.1rem;
  font-weight: 300;
  color: var(--ink);
  line-height: 1.2;
}

.projects-title em {
  font-style: italic;
  color: var(--accent);
}

.project-list { list-style: none; }

.project-item {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: start;
  gap: 1.5rem;
  padding: 1.8rem 0;
  border-top: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
}

.project-item:last-child { border-bottom: 1px solid var(--border); }
.project-item:hover .project-name { color: var(--accent); }
.project-item:hover .project-arrow { transform: translate(3px, -3px); }

.project-num {
  font-size: 0.72rem;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  padding-top: 0.25rem;
}

.project-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 0.4rem;
  transition: color 0.2s;
}

.project-desc {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.65;
  margin-bottom: 0.75rem;
}

.project-tags { display: flex; flex-wrap: wrap; }

.project-tags .t {
  font-size: 0.72rem;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.project-tags .t + .t::before {
  content: ' · ';
  color: var(--accent-light);
}

.project-arrow {
  font-size: 1rem;
  color: var(--ink-soft);
  padding-top: 0.25rem;
  transition: transform 0.2s;
  flex-shrink: 0;
}

/* ─── Contact ─────────────────────────────────────── */

#contact {
  background: var(--cream-dark);
  margin-left: -3.5rem;
  margin-right: -3.5rem;
  padding-left: 3.5rem;
  padding-right: 3.5rem;
}

.contact-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.1rem;
  font-weight: 300;
  color: var(--ink);
  margin-bottom: 0.75rem;
}

.contact-title em {
  font-style: italic;
  color: var(--accent);
}

.contact-subtitle {
  font-size: 0.9rem;
  color: var(--ink-mid);
  margin-bottom: 2.5rem;
  max-width: 380px;
  line-height: 1.7;
}

.contact-links { list-style: none; }

.contact-link {
  display: flex;
  align-items: center;
  padding: 1rem 0;
  border-top: 1px solid var(--border);
  text-decoration: none;
  color: var(--ink-mid);
  font-size: 0.88rem;
  transition: color 0.2s;
}

.contact-link:last-child { border-bottom: 1px solid var(--border); }
.contact-link:hover { color: var(--accent); }

.contact-link span.label {
  width: 72px;
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.contact-link:hover span.label { color: var(--accent-light); }
.contact-link .value { flex: 1; }

.contact-link .arrow {
  font-size: 0.85rem;
  transition: transform 0.2s;
  opacity: 0;
}

.contact-link:hover .arrow {
  opacity: 1;
  transform: translate(3px, -2px);
}

/* ─── Fade-in ─────────────────────────────────────── */

.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Responsive ──────────────────────────────────── */

@media (max-width: 780px) {
  .sidebar { display: none; }

  .main { padding: 0 1.5rem; }

  #hero { padding-top: 4rem; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .skills-layout { grid-template-columns: 1fr 1fr; }

  .project-item { grid-template-columns: 44px 1fr; }
  .project-arrow { display: none; }

  .stats-row { gap: 2rem; flex-wrap: wrap; }

  #contact {
    margin-left: -1.5rem;
    margin-right: -1.5rem;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}