/* ============================================================
   Nuoyi Wood — Global design system
   B2B custom furniture & joinery manufacturer (China → Australia)
   ============================================================ */

:root {
  /* Palette — warm wood tones */
  --wood-900: #241a12;
  --wood-800: #37281a;
  --wood-700: #4d3822;
  --wood-600: #6b4c2e;
  --wood-500: #8a623b;
  --accent:    #c0792f;
  --accent-hi: #d68a3d;
  --accent-soft: #f3e2cd;

  --bg:        #faf6ef;
  --card:      #ffffff;
  --ink:       #262019;
  --ink-soft:  #4c4238;
  --muted:     #7a6c5c;
  --border:    #e7dccb;
  --line:      #efe6d8;

  /* Type */
  --font: "Helvetica Neue", -apple-system, "Segoe UI", system-ui,
          "PingFang SC", "Hiragino Sans GB", sans-serif;

  /* Layout */
  --wrap: 1140px;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 12px 34px -14px rgba(55, 40, 26, .22);
  --shadow-lg: 0 24px 60px -22px rgba(55, 40, 26, .32);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--wood-600); text-decoration: none; }
a:hover { color: var(--accent); }

h1, h2, h3, h4 { line-height: 1.18; font-weight: 700; color: var(--ink); letter-spacing: -0.01em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.22rem; }

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

.section { padding: 88px 0; }
.section--alt { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head p { color: var(--muted); margin-top: 14px; font-size: 1.05rem; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 246, 239, .9);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; font-size: 1.16rem; color: var(--wood-900); }
.brand .logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--wood-600), var(--wood-800));
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: .95rem;
}
.brand small { display: block; font-weight: 500; font-size: .68rem; letter-spacing: .06em; color: var(--muted); }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a { color: var(--ink-soft); font-size: .95rem; font-weight: 500; }
.nav-links a:hover { color: var(--wood-600); }
.nav-links a.active { color: var(--wood-700); font-weight: 700; }
.nav-cta {
  background: var(--wood-700); color: #fff; padding: 11px 22px; border-radius: 999px;
  font-weight: 600; font-size: .93rem; transition: background .18s ease;
}
.nav-cta:hover { background: var(--wood-600); color: #fff; }

.nav-toggle { display: none; background: none; border: 0; font-size: 1.5rem; color: var(--wood-800); cursor: pointer; }

.lang-select {
  appearance: none; -webkit-appearance: none; -moz-appearance: none;
  font: inherit; font-size: .88rem; font-weight: 600; color: var(--ink-soft);
  background: transparent; border: 1px solid var(--border); border-radius: 999px;
  padding: 8px 32px 8px 14px; cursor: pointer; transition: border-color .18s ease;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%236b4c2e' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
}
.lang-select:hover { border-color: var(--wood-500); color: var(--ink); }
.lang-select:focus { outline: 2px solid var(--accent); outline-offset: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: 14px 30px; border-radius: 999px;
  font-weight: 600; font-size: .98rem; transition: all .18s ease; border: 1px solid transparent;
}
.btn-primary { background: var(--wood-700); color: #fff; }
.btn-primary:hover { background: var(--wood-600); color: #fff; transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-hi); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--wood-700); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--wood-500); color: var(--wood-600); }

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(1100px 500px at 85% -10%, var(--accent-soft), transparent 60%),
    var(--bg);
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { margin-bottom: 20px; }
.hero h1 .hl { color: var(--wood-600); }
.hero .lede { font-size: 1.18rem; color: var(--ink-soft); max-width: 540px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 22px; font-size: .9rem; color: var(--muted); }

.hero-visual {
  position: relative; border-radius: var(--radius);
  background: linear-gradient(150deg, var(--wood-700), var(--wood-900));
  min-height: 360px; display: grid; place-items: center;
  overflow: hidden; box-shadow: var(--shadow-lg);
}
.hero-visual .ph {
  color: rgba(255,255,255,.55); text-align: center; font-size: .95rem; letter-spacing: .04em;
}
.hero-badge {
  position: absolute; left: 20px; bottom: 20px; right: 20px;
  background: rgba(255,255,255,.94); border-radius: var(--radius-sm);
  padding: 14px 18px; display: flex; gap: 16px; flex-wrap: wrap;
  font-size: .86rem; color: var(--ink-soft); font-weight: 600;
  box-shadow: var(--shadow);
}
.hero-badge span { white-space: nowrap; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; text-align: left;
}
.stat .num { font-size: 2.1rem; font-weight: 800; color: var(--wood-700); letter-spacing: -0.02em; }
.stat .lbl { color: var(--muted); font-size: .9rem; margin-top: 4px; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card .icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); font-size: 1.3rem; margin-bottom: 18px;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: .97rem; }

/* ---------- Case cards ---------- */
.case {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
}
.case-media {
  aspect-ratio: 4 / 3; display: grid; place-items: center; color: rgba(255,255,255,.6);
  background: linear-gradient(145deg, var(--wood-600), var(--wood-800));
  font-size: .9rem;
}
.case-body { padding: 24px 24px 26px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.case-body h3 { font-size: 1.08rem; }
.case-body p { color: var(--muted); font-size: .94rem; flex: 1; }
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  font-size: .74rem; font-weight: 600; padding: 5px 11px; border-radius: 999px;
  background: var(--bg); border: 1px solid var(--line); color: var(--ink-soft);
}

/* ---------- Compliance ---------- */
.cert { display: flex; gap: 16px; align-items: flex-start; padding: 22px 0; border-bottom: 1px solid var(--line); }
.cert:last-child { border-bottom: 0; }
.cert .icon { font-size: 1.4rem; }
.cert h4 { font-size: 1.02rem; margin-bottom: 4px; }
.cert p { color: var(--muted); font-size: .93rem; }
.cert .badge {
  margin-left: auto; flex-shrink: 0; font-size: .72rem; font-weight: 700; padding: 5px 12px;
  border-radius: 999px; background: var(--accent-soft); color: var(--wood-700); white-space: nowrap;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(140deg, var(--wood-800), var(--wood-900));
  border-radius: var(--radius); padding: 60px 56px; color: #fff;
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center;
}
.cta-band h2 { color: #fff; margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,.72); font-size: 1.05rem; }
.cta-band .btn { margin-top: 22px; }

/* ---------- Form ---------- */
.form-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 40px; box-shadow: var(--shadow);
}
.field { margin-bottom: 20px; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 7px; color: var(--ink-soft); }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font: inherit; font-size: .97rem; background: var(--bg); color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; background: #fff;
}
.field textarea { min-height: 130px; resize: vertical; }
.form-hint { font-size: .82rem; color: var(--muted); margin-top: -10px; margin-bottom: 20px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--wood-900); color: rgba(255,255,255,.68); padding: 70px 0 40px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.site-footer h4 { color: #fff; font-size: .95rem; margin-bottom: 16px; }
.site-footer a { color: rgba(255,255,255,.68); }
.site-footer a:hover { color: var(--accent-hi); }
.site-footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; font-size: .93rem; }
.footer-brand { font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: 14px; }
.footer-brand span { color: var(--accent-hi); }
.footer-note { font-size: .9rem; max-width: 320px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12); padding-top: 26px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .84rem;
}

/* ---------- Page hero (interior) ---------- */
.page-hero { padding: 72px 0 48px; border-bottom: 1px solid var(--line); background: var(--bg); }
.page-hero h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
.page-hero .lede { color: var(--muted); font-size: 1.12rem; margin-top: 14px; max-width: 620px; }

/* ---------- Table ---------- */
.tbl { width: 100%; border-collapse: collapse; font-size: .95rem; background: var(--card); border-radius: var(--radius); overflow: hidden; }
.tbl th { text-align: left; background: var(--wood-800); color: #fff; padding: 14px 18px; font-weight: 600; }
.tbl td { padding: 13px 18px; border-bottom: 1px solid var(--line); color: var(--ink-soft); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl td:first-child { font-weight: 600; color: var(--ink); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .cta-band { grid-template-columns: 1fr; padding: 44px 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 20px 24px; gap: 16px;
  }
}
@media (max-width: 560px) {
  .section { padding: 60px 0; }
  .grid-3, .grid-4, .stats { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-card { padding: 26px 22px; }
}