:root {
  --bg: #0f1410;
  --surface: #161d16;
  --surface-2: #1c251c;
  --text: #e8ede4;
  --muted: #9aa69a;
  --accent: #8fb573;
  --accent-strong: #a7c98e;
  --border: #2a332a;
  --maxw: 1120px;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Header */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(15, 20, 15, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 20px; }
.brand { display: flex; align-items: baseline; gap: 8px; font-weight: 700; font-size: 1.15rem; }
.brand .sub { font-size: 0.78rem; font-weight: 400; color: var(--muted); letter-spacing: 0.04em; }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { color: var(--muted); font-size: 0.95rem; transition: color 0.15s; }
.nav-links a:hover { color: var(--text); }
.nav-links a[aria-current] { color: var(--accent-strong); }

/* Language switcher */
.lang-switch { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 2px; }
.lang-switch a {
  font-size: 0.78rem; padding: 4px 10px; border: 1px solid var(--border);
  border-radius: 999px; color: var(--muted); transition: all 0.15s;
}
.lang-switch a:hover { color: var(--text); border-color: var(--muted); }
.lang-switch a[aria-current] { color: var(--accent-strong); border-color: var(--accent); background: rgba(143, 181, 115, 0.1); }

/* Hero */
.hero { padding: 84px 0 64px; text-align: center; }
.hero .eyebrow {
  display: inline-block; font-size: 0.8rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--border); padding: 6px 16px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.15; font-weight: 800; letter-spacing: -0.01em; }
.hero .subtitle { max-width: 640px; margin: 20px auto 32px; color: var(--muted); font-size: 1.08rem; }
.cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn { padding: 13px 28px; border-radius: 999px; font-weight: 600; font-size: 0.98rem; transition: all 0.15s; }
.btn.primary { background: var(--accent); color: #12180f; }
.btn.primary:hover { background: var(--accent-strong); }
.btn.ghost { border: 1px solid var(--border); color: var(--text); }
.btn.ghost:hover { border-color: var(--muted); }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; padding: 40px 0 56px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 20px; text-align: center; }
.stat .value { font-size: 1.9rem; font-weight: 800; color: var(--accent-strong); }
.stat .label { color: var(--muted); font-size: 0.9rem; margin-top: 6px; }

/* Sections */
section { padding: 56px 0; }
section > .wrap > h2 { font-size: 1.7rem; font-weight: 700; margin-bottom: 12px; }
.section-intro { color: var(--muted); max-width: 720px; margin-bottom: 32px; }

/* Product grid */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.18s, border-color 0.18s; display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); border-color: #3d4a3d; }
.card .thumb { aspect-ratio: 4 / 3; background: var(--surface-2); }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.card .body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card h3 { font-size: 1.06rem; font-weight: 700; line-height: 1.35; }
.card .desc { color: var(--muted); font-size: 0.9rem; }
.card .meta { margin-top: auto; display: flex; justify-content: space-between; align-items: center; padding-top: 12px; }
.card .price { font-weight: 700; color: var(--accent-strong); }
.card .link { color: var(--accent); font-size: 0.9rem; font-weight: 600; }

.empty { color: var(--muted); border: 1px dashed var(--border); border-radius: var(--radius); padding: 48px; text-align: center; }

/* Focus list */
.focus-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.focus-list li {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 20px; display: flex; align-items: center; gap: 12px;
}
.focus-list li::before { content: "▸"; color: var(--accent); }

/* About */
.about { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* Factory strength */
#factory { padding: 64px 0; }
#factory .section-intro { margin-bottom: 40px; }
.strength-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.strength { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.strength h3 { font-size: 1.05rem; margin-bottom: 8px; color: var(--accent); }
.strength p { color: var(--muted); font-size: 0.92rem; line-height: 1.55; margin: 0; }
.factory-gallery { margin-top: 28px; border: 1px dashed var(--border); border-radius: var(--radius); padding: 40px; text-align: center; }
.factory-gallery .placeholder { color: var(--muted); }

/* Product detail */
.pd { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; padding: 48px 0; }
.pd .gallery img { border-radius: var(--radius); border: 1px solid var(--border); }
.pd h1 { font-size: 1.9rem; line-height: 1.25; margin-bottom: 12px; }
.pd .price { font-size: 1.4rem; color: var(--accent-strong); font-weight: 700; margin: 12px 0; }
.pd .desc { color: var(--muted); margin-bottom: 20px; }
.pd ul.bullets { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.pd ul.bullets li { padding-left: 24px; position: relative; }
.pd ul.bullets li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.specs { border-top: 1px solid var(--border); padding-top: 20px; margin-bottom: 24px; }
.specs dt { color: var(--muted); font-size: 0.85rem; }
.specs dd { margin: 0 0 12px; }
.buy { display: inline-block; background: var(--accent); color: #12180f; padding: 13px 30px; border-radius: 999px; font-weight: 600; }
.back { display: inline-block; margin-bottom: 20px; color: var(--muted); font-size: 0.9rem; }
.back:hover { color: var(--text); }

/* Footer */
footer { border-top: 1px solid var(--border); padding: 48px 0 40px; color: var(--muted); font-size: 0.9rem; }
footer .cols { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-bottom: 28px; }
footer h4 { color: var(--text); margin-bottom: 10px; font-size: 1rem; }
footer .fine { border-top: 1px solid var(--border); padding-top: 20px; font-size: 0.82rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* Responsive */
@media (max-width: 860px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .grid { grid-template-columns: 1fr 1fr; }
  .focus-list { grid-template-columns: 1fr; }
  .strength-grid { grid-template-columns: 1fr 1fr; }
  .pd { grid-template-columns: 1fr; }
  footer .cols { grid-template-columns: 1fr; }
  .nav-links { gap: 16px; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .strength-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}