:root {
  --bg: #050608;
  --fg: #f5f5f5;
  --accent: #2bb673;
  --accent-soft: rgba(43, 182, 115, 0.12);
  --border: rgba(255,255,255,0.08);
  --muted: #9ea3af;
  --card-bg: rgba(21,23,30,0.96);
  --pill-bg: rgba(15,17,24,0.96);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background: radial-gradient(circle at top left, #1b2433, #050608 55%);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 7vw;
  background: linear-gradient(to bottom, rgba(5,6,8,0.96), rgba(5,6,8,0.85));
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 1.1rem;
  text-transform: uppercase;
}

.logo-sub {
  margin-left: 0.5rem;
  font-weight: 400;
  font-size: 0.9rem;
  color: var(--muted);
}

.nav a {
  margin-left: 1.5rem;
  font-size: 0.95rem;
  color: var(--muted);
  padding-bottom: 0.4rem;
  border-bottom: 2px solid transparent;
}

.nav a.active,
.nav a:hover {
  color: var(--fg);
  border-bottom-color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(0, 1.6fr);
  gap: 3rem;
  padding: 3.5rem 7vw 2rem;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-text p {
  color: var(--muted);
  max-width: 42rem;
  font-size: 0.98rem;
}

.hero-actions {
  margin-top: 1.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.btn.primary {
  background: var(--accent);
  color: #020617;
  box-shadow: 0 14px 30px rgba(43, 182, 115, 0.3);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(43, 182, 115, 0.35);
}

.btn.secondary {
  border-color: var(--border);
  background: rgba(15,17,24,0.96);
  color: var(--fg);
}

.btn.secondary:hover {
  border-color: var(--accent);
}

.hero-mosaic {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.hero-tile {
  border-radius: 18px;
  min-height: 130px;
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 18px 40px rgba(0,0,0,0.65);
}

.hero-tile.tile-1 { background-image: url('/assets/images/爱马仕灰.jpg'); }
.hero-tile.tile-2 { background-image: url('/assets/images/爵士白.jpg'); }
.hero-tile.tile-3 { background-image: url('/assets/images/春黛彩.jpg'); }
.hero-tile.tile-4 { background-image: url('/assets/images/普拉达绿.jpg'); }

.section {
  padding: 3rem 7vw;
}

.section.narrow {
  max-width: 880px;
  margin: 0 auto;
}

.section.muted {
  background: radial-gradient(circle at top, rgba(148,163,184,0.15), rgba(15,23,42,0.98));
}

.section h1,
.section h2 {
  font-size: 1.6rem;
  margin-bottom: 1.4rem;
}

.lead {
  color: var(--muted);
  max-width: 40rem;
  font-size: 0.97rem;
}

.grid {
  display: grid;
  gap: 1.4rem;
  margin-top: 1.6rem;
}

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

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

.card {
  background: var(--card-bg);
  border-radius: 18px;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--border);
  box-shadow: 0 18px 40px rgba(0,0,0,0.65);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.pill {
  background: var(--pill-bg);
  padding: 0.9rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  text-align: center;
  color: var(--muted);
}

.contact-block {
  margin-top: 1.4rem;
  padding: 1.2rem 1.4rem;
  border-radius: 16px;
  border: 1px dashed var(--border);
  background: rgba(15,17,24,0.96);
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  padding: 1.6rem 7vw 2.2rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  background: rgba(5,6,8,0.96);
  margin-top: 2rem;
}

.form {
  margin-top: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

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

.form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.form input,
.form textarea {
  background: rgba(15,17,24,0.96);
  border-radius: 11px;
  border: 1px solid var(--border);
  padding: 0.65rem 0.75rem;
  color: var(--fg);
  font-size: 0.95rem;
  outline: none;
}

.form input:focus,
.form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(43,182,115,0.4);
}

.form-note {
  margin-top: 0.4rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.thumb {
  border-radius: 14px;
  height: 140px;
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 0.9rem;
}

.thumb-1 { background-image: url('/assets/images/幻影灰.jpg'); }
.thumb-2 { background-image: url('/assets/images/月光米黄.jpg'); }
.thumb-3 { background-image: url('/assets/images/新鱼肚白.jpg'); }
.thumb-4 { background-image: url('/assets/images/猫眼绿浅.jpg'); }

@media (max-width: 880px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 2.4rem;
  }

  .hero-mosaic {
    order: -1;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .nav {
    display: flex;
    flex-wrap: wrap;
  }

  .nav a {
    margin-left: 0;
    margin-right: 1rem;
    font-size: 0.9rem;
  }
}