:root {
  --amber: #c9a227;
  --amber-soft: #e8d48b;
  --charcoal: #1c1c1c;
  --ink: #222222;
  --paper: #f7f5f0;
  --muted: #6a6560;
  --card: #ffffff;
  --line: rgba(28, 28, 28, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(201, 162, 39, 0.12), transparent 55%),
    linear-gradient(180deg, #f3f0ea 0%, var(--paper) 40%, #ebe8e2 100%);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.container.narrow {
  width: min(760px, calc(100% - 40px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 245, 240, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #4a4a4a;
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 16px;
  font-weight: 600;
}

.brand strong {
  display: block;
  font-size: 16px;
  color: var(--charcoal);
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  gap: 22px;
  font-size: 14px;
  color: var(--muted);
}

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

.hero {
  position: relative;
  padding: 80px 0 72px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 70% 30%, rgba(201, 162, 39, 0.18), transparent 42%),
    radial-gradient(circle at 20% 80%, rgba(28, 28, 28, 0.04), transparent 40%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  text-align: center;
}

.eyebrow {
  letter-spacing: 0.22em;
  font-size: 12px;
  color: var(--amber);
  margin: 0;
}

.hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(30px, 5.5vw, 48px);
  line-height: 1.28;
  font-weight: 650;
  color: var(--charcoal);
}

.hero h1 span {
  display: block;
  margin-top: 12px;
  font-size: 0.42em;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.lead {
  max-width: 720px;
  margin: 0 auto;
  font-size: 17px;
  color: var(--muted);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 8px;
  font-size: 15px;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn-primary {
  background: var(--charcoal);
  color: #f7f5f0;
}

.btn-primary:hover {
  background: #333;
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
  color: var(--charcoal);
}

.btn-ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 24px;
  margin-top: 28px;
  font-size: 13px;
  color: var(--muted);
}

.intro,
.products,
.series,
.spaces,
.about-block {
  padding: 72px 0;
}

.kicker {
  margin: 0 0 10px;
  color: var(--amber);
  letter-spacing: 0.16em;
  font-size: 12px;
}

h2 {
  margin: 0 0 20px;
  font-size: clamp(26px, 4vw, 36px);
  line-height: 1.3;
  color: var(--charcoal);
}

.section-head {
  margin-bottom: 36px;
  text-align: center;
}

.section-desc {
  margin: -8px auto 0;
  max-width: 640px;
  color: var(--muted);
  font-size: 15px;
}

.grid-3,
.grid-4,
.split,
.footer-grid {
  display: grid;
  gap: 20px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.product-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.product-card:hover {
  box-shadow: 0 14px 36px rgba(28, 28, 28, 0.08);
  transform: translateY(-3px);
}

.product-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  color: var(--charcoal);
}

.product-card p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.product-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(201, 162, 39, 0.14);
  color: #8a7018;
  display: grid;
  place-items: center;
  font-size: 18px;
  margin-bottom: 14px;
}

.split {
  grid-template-columns: 1.2fr 0.8fr;
  align-items: start;
}

.checklist {
  padding-left: 18px;
  color: var(--muted);
}

.quote-panel {
  background: var(--charcoal);
  color: #f0ebe3;
  border-radius: 14px;
  padding: 28px;
  box-shadow: 0 20px 40px rgba(28, 28, 28, 0.18);
}

.quote-panel blockquote {
  margin: 0 0 14px;
  font-size: 18px;
  line-height: 1.6;
}

.quote-panel p {
  margin: 0;
  font-size: 13px;
  opacity: 0.7;
}

.space-item {
  padding: 22px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.space-item strong {
  display: block;
  margin-bottom: 8px;
  font-size: 17px;
  color: var(--charcoal);
}

.space-item p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.numbers {
  padding: 40px 0;
  background: rgba(28, 28, 28, 0.04);
  border-block: 1px solid var(--line);
}

.numbers .grid-4 {
  text-align: center;
}

.numbers strong {
  display: block;
  font-size: 28px;
  color: var(--amber);
}

.numbers p {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.site-footer {
  padding: 44px 0 52px;
  background: var(--charcoal);
  color: #e8e2d8;
}

.footer-grid {
  grid-template-columns: 1.2fr 1fr 1fr;
  font-size: 14px;
  color: rgba(232, 226, 216, 0.82);
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }

  .grid-3,
  .grid-4,
  .split,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}