/* Zhuhai Yonger Trading — B2B used auto-parts export */
:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --ink: #1a2332;
  --muted: #5a6577;
  --line: #d8dee8;
  --brand: #1e3a5f;
  --brand-2: #2c5282;
  --accent: #c45c26;
  --accent-soft: #fdf0e9;
  --ok: #1f6b4a;
  --shadow: 0 8px 28px rgba(26, 35, 50, 0.08);
  --radius: 12px;
  --max: 1100px;
  --font: "Segoe UI", system-ui, -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand-2); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent); }
.wrap { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

/* Language visibility */
html[lang="en"] .lang-zh { display: none !important; }
html[lang="zh"] .lang-en { display: none !important; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.85rem 0;
}
.brand {
  display: flex; flex-direction: column; gap: 0.1rem;
  color: inherit; text-decoration: none;
}
.brand-name { font-weight: 700; font-size: 1.05rem; color: var(--brand); letter-spacing: 0.01em; }
.brand-sub { font-size: 0.78rem; color: var(--muted); }
.nav {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 1rem;
  font-size: 0.92rem;
}
.nav a { color: var(--ink); text-decoration: none; font-weight: 500; }
.nav a:hover { color: var(--accent); }
.lang-toggle {
  display: inline-flex; border: 1px solid var(--line); border-radius: 999px;
  overflow: hidden; background: var(--surface);
}
.lang-toggle button {
  border: 0; background: transparent; padding: 0.35rem 0.7rem;
  font: inherit; font-size: 0.82rem; cursor: pointer; color: var(--muted);
}
.lang-toggle button[aria-pressed="true"] {
  background: var(--brand); color: #fff; font-weight: 600;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.4rem; border-radius: 8px; border: 1px solid transparent;
  padding: 0.7rem 1.15rem; font: inherit; font-weight: 600;
  cursor: pointer; text-decoration: none; transition: 0.15s ease;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #a84b1d; color: #fff; }
.btn-ghost {
  background: transparent; border-color: var(--line); color: var(--ink);
}
.btn-ghost:hover { border-color: var(--brand-2); color: var(--brand-2); }

/* Hero */
.hero {
  background:
    linear-gradient(135deg, rgba(30,58,95,0.92), rgba(44,82,130,0.88)),
    url("images/incoming-vehicles.jpg") center/cover no-repeat;
  color: #fff; padding: 4.5rem 0 4rem;
}
.hero-grid {
  display: grid; gap: 2rem;
  grid-template-columns: 1.3fr 0.9fr; align-items: end;
}
.hero h1 {
  margin: 0 0 0.85rem; font-size: clamp(1.7rem, 3.5vw, 2.45rem);
  line-height: 1.25; letter-spacing: -0.02em;
}
.hero-lead { margin: 0 0 1.4rem; font-size: 1.05rem; opacity: 0.95; max-width: 40rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.hero-card {
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.22);
  border-radius: var(--radius); padding: 1.1rem 1.2rem; backdrop-filter: blur(4px);
}
.hero-card h2 { margin: 0 0 0.6rem; font-size: 1rem; font-weight: 700; }
.hero-card ul { margin: 0; padding-left: 1.1rem; font-size: 0.92rem; }
.hero-card li + li { margin-top: 0.35rem; }
.badge {
  display: inline-block; margin-bottom: 0.85rem;
  padding: 0.25rem 0.65rem; border-radius: 999px;
  background: rgba(255,255,255,0.16); font-size: 0.8rem; font-weight: 600;
}

/* Sections */
section { padding: 3.5rem 0; }
.section-head { margin-bottom: 1.75rem; max-width: 42rem; }
.section-head h2 {
  margin: 0 0 0.55rem; font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  color: var(--brand); letter-spacing: -0.01em;
}
.section-head p { margin: 0; color: var(--muted); }
.surface {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}

/* Process */
.process-grid {
  display: grid; gap: 1.1rem;
  grid-template-columns: repeat(4, 1fr);
}
.process-card { overflow: hidden; }
.process-card img {
  width: 100%; aspect-ratio: 4/3; object-fit: cover; background: #e8eef5;
}
.process-card .cap {
  padding: 0.85rem 1rem 1rem; font-size: 0.92rem; font-weight: 600; color: var(--brand);
}
.process-steps {
  display: grid; gap: 0.85rem; margin-top: 1.5rem;
  grid-template-columns: repeat(4, 1fr);
}
.step {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem 1.05rem;
}
.step-num {
  display: inline-flex; width: 1.7rem; height: 1.7rem; border-radius: 50%;
  align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent);
  font-size: 0.85rem; font-weight: 700; margin-bottom: 0.45rem;
}
.step h3 { margin: 0 0 0.35rem; font-size: 0.98rem; }
.step p { margin: 0; font-size: 0.88rem; color: var(--muted); }

/* Categories */
.cat-grid {
  display: grid; gap: 0.9rem;
  grid-template-columns: repeat(3, 1fr);
}
.cat {
  padding: 1.15rem 1.2rem; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
}
.cat h3 { margin: 0 0 0.4rem; font-size: 1rem; color: var(--brand); }
.cat p { margin: 0; font-size: 0.9rem; color: var(--muted); }
.note {
  margin-top: 1.2rem; padding: 0.95rem 1.1rem;
  background: #eef4fb; border-left: 4px solid var(--brand-2);
  border-radius: 0 8px 8px 0; color: var(--ink); font-size: 0.92rem;
}

/* Shipping */
.ship-grid {
  display: grid; gap: 1rem; grid-template-columns: 1.2fr 1fr;
}
.ship-card { padding: 1.25rem 1.35rem; }
.ship-card h3 { margin: 0 0 0.55rem; font-size: 1.05rem; color: var(--brand); }
.ship-card p, .ship-card li { color: var(--muted); font-size: 0.94rem; }
.ship-card ul { margin: 0.4rem 0 0; padding-left: 1.15rem; }
.ship-card li + li { margin-top: 0.3rem; }

/* Contact / form */
.contact-grid {
  display: grid; gap: 1.25rem; grid-template-columns: 0.9fr 1.3fr;
  align-items: start;
}
.contact-info { padding: 1.4rem 1.45rem; }
.contact-info h3 { margin: 0 0 0.75rem; color: var(--brand); }
.contact-list { list-style: none; margin: 0; padding: 0; }
.contact-list li {
  padding: 0.65rem 0; border-bottom: 1px solid var(--line);
  font-size: 0.94rem;
}
.contact-list li:last-child { border-bottom: 0; }
.contact-list strong { display: block; color: var(--muted); font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.15rem; }
.placeholder { color: var(--muted); font-style: italic; }
.form-panel { padding: 1.4rem 1.45rem; }
.form-panel h3 { margin: 0 0 0.35rem; color: var(--brand); }
.form-lead { margin: 0 0 1rem; color: var(--muted); font-size: 0.92rem; }
.form-grid {
  display: grid; gap: 0.85rem; grid-template-columns: 1fr 1fr;
}
.field { display: flex; flex-direction: column; gap: 0.3rem; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 0.85rem; font-weight: 600; color: var(--ink); }
.field .hint { font-weight: 400; color: var(--muted); }
.field input, .field textarea, .field select {
  font: inherit; padding: 0.65rem 0.75rem;
  border: 1px solid var(--line); border-radius: 8px;
  background: #fff; color: var(--ink);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 2px solid rgba(44,82,130,0.35); border-color: var(--brand-2);
}
.field textarea { min-height: 110px; resize: vertical; }
.form-actions {
  grid-column: 1 / -1; display: flex; flex-wrap: wrap;
  gap: 0.75rem; align-items: center; margin-top: 0.25rem;
}
.form-note { font-size: 0.85rem; color: var(--muted); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line); background: #0f1a2a; color: #c9d3e0;
  padding: 2rem 0 2.4rem; margin-top: 1rem;
}
.site-footer a { color: #e8eef7; }
.footer-grid {
  display: grid; gap: 1.25rem; grid-template-columns: 1.4fr 1fr;
}
.footer-legal { font-size: 0.9rem; }
.footer-legal strong { color: #fff; display: block; margin-bottom: 0.35rem; }
.footer-meta { font-size: 0.85rem; color: #93a0b3; }
.footer-meta p { margin: 0.25rem 0; }

/* Mobile nav */
.menu-btn {
  display: none; border: 1px solid var(--line); background: #fff;
  border-radius: 8px; padding: 0.4rem 0.65rem; font: inherit; cursor: pointer;
}

@media (max-width: 920px) {
  .hero-grid, .process-grid, .process-steps, .cat-grid,
  .ship-grid, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links { display: none; width: 100%; flex-direction: column; align-items: flex-start; }
  .header-inner { flex-wrap: wrap; }
  .menu-btn { display: inline-flex; }
  .header-inner.is-open .nav-links { display: flex; }
  .process-grid, .process-steps, .form-grid { grid-template-columns: 1fr; }
  .hero { padding: 3.2rem 0 2.8rem; }
  .field.full { grid-column: auto; }
  .form-actions { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

.nowrap { white-space: nowrap; }

.contact-qrs {
  display: flex;
  gap: 16px;
  margin-top: 18px;
}
.contact-qrs a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: inherit;
  text-decoration: none;
}
.contact-qrs img {
  width: 140px;
  height: 140px;
  object-fit: contain;
  background: #fff;
  border-radius: 12px;
  border: 1px solid rgba(15, 23, 42, 0.08);
}