/* ============================================================
   Shenzhen Jianwei Magnetic Materials Co., Ltd. — NdFeB Magnet Static Site
   Modern industrial B2B theme: navy + orange/teal accent
   ============================================================ */

:root {
  --navy: #0f2a4a;
  --navy-deep: #0a1f38;
  --navy-soft: #163a63;
  --accent: #f5821f;      /* orange */
  --accent-2: #1aa6b7;    /* teal */
  --bg: #f5f7fa;
  --bg-alt: #eef2f7;
  --text: #1d2733;
  --text-muted: #5a6b7b;
  --border: #d8e0e8;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(15, 42, 74, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 42, 74, 0.14);
  --maxw: 1140px;
  --gap: 24px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(245, 130, 31, 0.35);
}
.btn-primary:hover { background: #e2730f; }
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  color: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.18);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}
.brand:hover { text-decoration: none; }
.brand-mark { display: inline-flex; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text small { font-weight: 400; font-size: 11px; color: #aebfd0; letter-spacing: .5px; }

.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  color: #dbe6f2;
  padding: 8px 12px;
  border-radius: 5px;
  font-size: 14.5px;
  font-weight: 500;
}
.site-nav a:hover { color: #fff; background: rgba(255,255,255,0.08); text-decoration: none; }
.site-nav .nav-cta {
  background: var(--accent);
  color: #fff;
  margin-left: 8px;
}
.site-nav .nav-cta:hover { background: #e2730f; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 24px; height: 2px; background: #fff; border-radius: 2px;
  transition: .2s;
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(26,166,183,0.25), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: #fff;
  padding: 72px 0 84px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 13px;
  margin: 0 0 12px;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  margin: 0 0 18px;
  font-weight: 800;
}
.hero-sub {
  font-size: 17px;
  color: #cdd9e6;
  max-width: 560px;
  margin: 0 0 22px;
}
.hero-points {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: grid;
  gap: 10px;
}
.hero-points li {
  position: relative;
  padding-left: 26px;
  color: #e7eef5;
  font-size: 15px;
}
.hero-points li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 0;
  color: var(--accent);
  font-weight: 800;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 16px;
  padding: 28px;
  text-align: center;
}
.magnet-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 18px;
}
.mag {
  height: 92px;
  border-radius: 8px;
  box-shadow: inset 0 0 0 3px rgba(255,255,255,0.18);
}
.mag-a { background: linear-gradient(135deg, var(--accent), #ffb05a); }
.mag-b { background: linear-gradient(135deg, var(--accent-2), #5fd0db); }
.mag-c { background: linear-gradient(135deg, #2c4a6e, #4f7bab); }
.mag-d { background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.hero-note { color: #b9c8d8; font-size: 13.5px; margin: 0; }

/* ---------- Sections ---------- */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.section-eyebrow {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 13px;
  margin: 0 0 8px;
}
.section h2 {
  font-size: clamp(24px, 3vw, 34px);
  margin: 0 0 28px;
  color: var(--navy);
  font-weight: 800;
}
.sub-head {
  font-size: 20px;
  color: var(--navy);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 36px;
  align-items: start;
}
.about-copy p { margin: 0 0 16px; color: var(--text); }
.about-copy h3 { color: var(--navy); margin: 24px 0 12px; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.check-list li {
  position: relative; padding-left: 26px; color: var(--text);
}
.check-list li::before {
  content: "✓"; position: absolute; left: 0; color: var(--accent-2); font-weight: 800;
}
.stat-card {
  background: var(--navy);
  color: #fff;
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.stat {
  display: flex; flex-direction: column;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.stat:last-of-type { border-bottom: none; }
.stat-num { font-size: 24px; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 13px; color: #c4d3e2; }
.placeholder-img {
  margin-top: 16px;
  height: 130px;
  border-radius: 8px;
  background:
    repeating-linear-gradient(45deg, rgba(255,255,255,0.06) 0 10px, transparent 10px 20px),
    var(--navy-soft);
  display: flex; align-items: center; justify-content: center;
  color: #9fb3c8; font-size: 13px; text-align: center; padding: 12px;
}

/* ---------- Products / Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--gap);
}
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card h4 { margin: 0 0 10px; color: var(--navy); font-size: 17px; }
.card p { margin: 0 0 12px; color: var(--text-muted); font-size: 14.5px; }
.tag {
  display: inline-block;
  background: var(--accent-2);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
}

/* ---------- Applications ---------- */
.app-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--gap);
}
.app-item {
  background: var(--white);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 22px;
  box-shadow: var(--shadow);
}
.app-item h3 { margin: 0 0 8px; color: var(--navy); font-size: 18px; }
.app-item p { margin: 0 0 8px; color: var(--text-muted); font-size: 14.5px; }
.recgrade { font-size: 13.5px !important; color: var(--navy) !important; }

/* ---------- Capabilities ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--gap);
}
.cap-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}
.cap-card h3 {
  margin: 0 0 12px; color: var(--navy); font-size: 19px;
  padding-bottom: 10px; border-bottom: 2px solid var(--accent);
}
.cap-card p { color: var(--text-muted); font-size: 14.5px; margin: 0 0 12px; }
.coat-list { margin: 0; padding-left: 18px; color: var(--text-muted); font-size: 14px; display: grid; gap: 6px; }
.coat-list strong { color: var(--navy); }

/* ---------- Certifications ---------- */
.cert-intro, .blog-intro, .contact-intro {
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 0 28px;
}
.badge-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--gap);
}
.badge {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  box-shadow: var(--shadow);
}
.badge h4 { margin: 12px 0 6px; color: var(--navy); }
.badge p { margin: 0; color: var(--text-muted); font-size: 13.5px; }
.badge-ico {
  width: 64px; height: 64px; margin: 0 auto;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy), var(--navy-soft));
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 15px; letter-spacing: .5px;
  box-shadow: var(--shadow);
}

/* ---------- Blog ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--gap);
}
.blog-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.blog-card h3 { margin: 0 0 10px; color: var(--navy); font-size: 17px; }
.blog-card p { margin: 0 0 16px; color: var(--text-muted); font-size: 14.5px; flex: 1; }
.blog-status {
  align-self: flex-start;
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

/* ---------- Contact / RFQ ---------- */
.contact { background: var(--navy); color: #fff; }
.contact .section-eyebrow { color: var(--accent); }
.contact h2 { color: #fff; }
.contact-intro { color: #c4d3e2; }
.rfq-form {
  background: var(--white);
  color: var(--text);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow-lg);
  max-width: 860px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}
.field { display: flex; flex-direction: column; margin-bottom: 18px; }
.field:last-child { margin-bottom: 0; }
.field label, .grade-field legend {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
  color: var(--navy);
}
.field input, .field select, .field textarea {
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  transition: border .15s ease, box-shadow .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(26,166,183,0.18);
}
.field textarea { resize: vertical; }
.grade-field {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 16px;
  margin-bottom: 18px;
}
.checkbox-row { display: flex; flex-wrap: wrap; gap: 14px; }
.checkbox-row label { font-weight: 500; display: flex; align-items: center; gap: 6px; color: var(--text); }
.checkbox-inline { justify-content: flex-start; }
.sample-label { font-weight: 600; color: var(--navy); display: flex; align-items: center; gap: 8px; }
.btn-submit { width: 100%; margin-top: 6px; }
.form-feedback { margin: 14px 0 0; font-size: 14px; min-height: 1.2em; }
.form-feedback.error { color: #c0392b; }
.form-feedback.success { color: #1e7a3c; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-deep);
  color: #c4d3e2;
  padding: 40px 0 28px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
}
.footer-brand strong { color: #fff; font-size: 18px; }
.footer-brand p { margin: 8px 0 0; font-size: 14px; color: #9fb3c8; }
.footer-nav { display: flex; flex-direction: column; gap: 8px; }
.footer-nav a { color: #c4d3e2; font-size: 14px; }
.footer-nav a:hover { color: #fff; }
.footer-contact p { margin: 6px 0; font-size: 14px; }
.footer-contact a { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }

  /* Mobile nav: collapse into toggle, slide-down panel */
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--navy);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    box-shadow: 0 8px 20px rgba(0,0,0,0.25);
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 13px 20px; border-radius: 0; }
  .site-nav .nav-cta { margin: 6px 16px; text-align: center; }
}

@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; }
  .rfq-form { padding: 22px 18px; }
  .section { padding: 52px 0; }
  .hero { padding: 48px 0 56px; }
  /* Simpler horizontal-scroll nav fallback for very small screens */
  .magnet-grid { grid-template-columns: repeat(2, 1fr); }
}

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

/* ---------- Client block: Shenzhen Jianwei Magnetic Materials ---------- */
.footer-cn { color: #c4d3e2; font-size: 13px; margin: 4px 0 8px; }
.contact-details {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 0 0 22px;
}
.contact-details p { margin: 6px 0; font-size: 14.5px; color: #dbe6f0; }
.contact-details strong { color: #fff; }
.contact-details a { color: var(--accent); }