/* ========================================
   BeiDian Electric - Arabic Version (RTL)
   ======================================== */
:root {
  --navy-900: #0a1628;
  --navy-800: #0f1f35;
  --navy-700: #162a47;
  --navy-600: #1e3a5f;
  --navy-500: #2a4a73;
  --amber-500: #d4942a;
  --amber-400: #e8a93d;
  --amber-300: #f2c060;
  --amber-600: #b87d1e;
  --electric-500: #2e7fe8;
  --electric-400: #4a95f5;
  --electric-300: #6db0ff;
  --steel-100: #f5f6f8;
  --steel-200: #e8eaee;
  --steel-300: #d1d5dc;
  --steel-400: #a8b0bd;
  --steel-500: #7a8496;
  --steel-600: #555e6e;
  --steel-700: #3b4250;
  --steel-800: #252a34;
  --steel-900: #141820;
  --font-ar: 'Cairo', 'Tajawal', 'Segoe UI', Tahoma, sans-serif;
  --container: 1280px;
  --shadow-sm: 0 1px 2px rgba(10, 22, 40, 0.06), 0 1px 3px rgba(10, 22, 40, 0.08);
  --shadow-md: 0 4px 6px rgba(10, 22, 40, 0.07), 0 10px 20px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 10px 25px rgba(10, 22, 40, 0.1), 0 20px 50px rgba(10, 22, 40, 0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-ar);
  color: var(--steel-800);
  background: var(--steel-100);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  direction: rtl;
  text-align: right;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.section { padding: 90px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--amber-500);
  margin-bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.section-label::before, .section-label::after {
  content: ''; width: 24px; height: 1px; background: var(--amber-500);
}
.section-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--navy-900);
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 17px;
  color: var(--steel-600);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-ar);
  font-size: 15px;
  font-weight: 700;
  border: 2px solid transparent;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
  border-radius: 4px;
}
.btn-primary { background: var(--amber-500); color: var(--navy-900); border-color: var(--amber-500); }
.btn-primary:hover {
  background: var(--amber-400); border-color: var(--amber-400);
  transform: translateY(-1px); box-shadow: 0 6px 20px rgba(212, 148, 42, 0.35);
}
.btn-outline { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.5); }
.btn-outline:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; }
.btn-outline-navy { background: transparent; color: var(--navy-800); border-color: var(--navy-800); }
.btn-outline-navy:hover { background: var(--navy-800); color: #fff; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.3s ease;
}
.header-inner {
  max-width: var(--container); margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between; height: 80px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo img { height: 44px; width: auto; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--steel-300);
  padding: 10px 16px;
  position: relative;
  transition: color 0.2s ease;
  border-radius: 4px;
}
.nav-link:hover { color: #fff; }
.nav-link.active { color: var(--amber-500); }
.nav-link.active::after {
  content: ''; position: absolute; bottom: -2px; right: 16px; left: 16px;
  height: 2px; background: var(--amber-500);
}
.header-cta { display: flex; align-items: center; gap: 16px; }
.header-phone { display: flex; align-items: center; gap: 8px; color: var(--steel-300); font-size: 14px; }
.header-phone strong { color: #fff; font-weight: 700; direction: ltr; unicode-bidi: embed; }
.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  padding: 5px 4px;
}
.lang-switch a {
  font-size: 12px;
  font-weight: 700;
  color: var(--steel-400);
  padding: 5px 10px;
  border-radius: 4px;
  transition: all 0.2s ease;
}
.lang-switch a:hover { color: #fff; }
.lang-switch a.active { background: var(--amber-500); color: var(--navy-900); }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
.hamburger span { display: block; width: 24px; height: 2px; background: #fff; transition: all 0.3s ease; }
.mobile-nav {
  display: none; position: fixed; top: 80px; left: 0; right: 0;
  background: var(--navy-900); padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1); z-index: 999;
}
.mobile-nav.open { display: block; }
.mobile-nav-link {
  display: block; padding: 14px 0; font-size: 16px; font-weight: 600;
  color: var(--steel-300); border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.mobile-nav-link:last-child { border-bottom: none; }
.mobile-nav-link.active { color: var(--amber-500); }
.mobile-nav .lang-switch { margin-top: 16px; justify-content: center; }
.mobile-nav .btn { width: 100%; margin-top: 12px; }

/* ---------- Page Header ---------- */
.page-header {
  position: relative; padding: 160px 0 100px; background: var(--navy-900); overflow: hidden;
}
.page-header-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 80% 50%, rgba(212, 148, 42, 0.1), transparent 60%),
    linear-gradient(135deg, var(--navy-900), var(--navy-700));
}
.page-header-bg::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
}
.page-header-content {
  position: relative; z-index: 2; text-align: center; color: #fff;
  max-width: 800px; margin: 0 auto;
}
.page-header-content h1 {
  font-size: 48px; font-weight: 800;
  margin-bottom: 20px; line-height: 1.25;
}
.page-header-content p { font-size: 17px; color: var(--steel-300); line-height: 1.8; }
.page-header-content .section-label { margin-bottom: 20px; color: var(--amber-400); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 60%, var(--navy-600) 100%);
  overflow: hidden;
  padding: 160px 0 120px;
}
.hero::before {
  content: '';
  position: absolute;
  top: -30%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(212, 148, 42, 0.12), transparent 60%);
}
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}
.hero-content { position: relative; z-index: 2; color: #fff; max-width: 760px; }
.hero h1 {
  font-size: 52px; font-weight: 800;
  line-height: 1.25; margin-bottom: 24px;
}
.hero h1 .highlight { color: var(--amber-400); }
.hero p { font-size: 18px; color: var(--steel-300); line-height: 1.8; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 24px; margin-top: 72px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 40px;
}
.hero-stat .value {
  font-size: 36px; font-weight: 800; color: var(--amber-400); line-height: 1.1; margin-bottom: 6px;
}
.hero-stat .label { font-size: 13px; color: var(--steel-400); }

/* ---------- Cards ---------- */
.card-lift { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.card-lift:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* ---------- Features ---------- */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card {
  background: #fff;
  padding: 36px 28px;
  border: 1px solid var(--steel-200);
  text-align: center;
}
.feature-icon {
  width: 64px; height: 64px;
  background: var(--navy-900);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  color: var(--amber-500);
}
.feature-icon svg { width: 32px; height: 32px; }
.feature-card h3 { font-size: 18px; font-weight: 700; color: var(--navy-900); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--steel-600); line-height: 1.7; }

/* ---------- Products ---------- */
.product-detail-grid { display: grid; grid-template-columns: 1fr; gap: 40px; }
.product-detail-card {
  background: #fff;
  display: grid; grid-template-columns: 1fr 1fr;
  border: 1px solid var(--steel-200);
  overflow: hidden;
}
.product-detail-img { position: relative; background: var(--steel-100); min-height: 400px; }
.product-detail-img img { width: 100%; height: 100%; object-fit: cover; }
.product-detail-tag {
  position: absolute; top: 20px; right: 20px;
  background: var(--navy-900); color: var(--amber-400);
  font-size: 12px; font-weight: 700;
  padding: 8px 16px; letter-spacing: 1px;
}
.product-detail-body { padding: 48px 40px; }
.product-detail-model {
  font-size: 13px; font-weight: 700; letter-spacing: 1px;
  color: var(--amber-500); margin-bottom: 8px;
}
.product-detail-name { font-size: 26px; font-weight: 800; color: var(--navy-900); margin-bottom: 16px; line-height: 1.3; }
.product-detail-desc { font-size: 15px; color: var(--steel-600); line-height: 1.8; margin-bottom: 28px; }
.spec-table { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; margin-bottom: 28px; }
.spec-row { display: flex; flex-direction: column; gap: 4px; }
.spec-label { font-size: 11px; font-weight: 700; letter-spacing: 0.5px; color: var(--steel-500); }
.spec-value { font-size: 14px; color: var(--steel-800); font-weight: 600; direction: ltr; text-align: right; }
.features-list { margin-bottom: 28px; }
.features-title { font-size: 15px; font-weight: 700; color: var(--navy-800); margin-bottom: 12px; }
.features-list ul { display: grid; grid-template-columns: 1fr; gap: 8px; }
.features-list li {
  font-size: 14px; color: var(--steel-700);
  display: flex; align-items: flex-start; gap: 10px;
}
.features-list li svg { color: var(--amber-500); margin-top: 5px; flex-shrink: 0; }
.product-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.products-cta { background: var(--navy-900); padding: 60px 0; }
.products-cta-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 40px; color: #fff; flex-wrap: wrap;
}
.products-cta-inner h3 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.products-cta-inner p { font-size: 15px; color: var(--steel-400); }

/* ---------- About ---------- */
.about-intro {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 80px; align-items: start;
}
.about-intro img { width: 100%; height: 480px; object-fit: cover; }
.about-intro-text .section-label { margin-bottom: 12px; }
.about-intro-text h2 {
  font-size: 34px; font-weight: 800;
  color: var(--navy-900); margin: 12px 0 20px;
}
.about-intro-text p { font-size: 15px; color: var(--steel-600); line-height: 1.9; margin-bottom: 16px; }
.about-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px; padding-top: 32px;
  border-top: 1px solid var(--steel-200);
}
.about-stat .value { font-size: 30px; font-weight: 800; color: var(--amber-500); line-height: 1.1; margin-bottom: 6px; }
.about-stat .label { font-size: 12px; color: var(--steel-600); }
.capabilities-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.capability-card {
  background: #fff; padding: 36px 28px;
  border: 1px solid var(--steel-200); text-align: center;
}
.capability-card h3 { font-size: 18px; font-weight: 700; color: var(--navy-900); margin-bottom: 10px; }
.capability-card p { font-size: 13px; color: var(--steel-600); line-height: 1.7; }
.timeline { position: relative; max-width: 900px; margin: 0 auto; padding: 20px 0; }
.timeline::before {
  content: ''; position: absolute;
  right: 50%; top: 0; bottom: 0;
  width: 2px; background: var(--steel-200);
  transform: translateX(50%);
}
.timeline-item {
  position: relative;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; margin-bottom: 40px;
}
.timeline-dot {
  position: absolute; right: 50%; top: 6px;
  width: 14px; height: 14px;
  background: var(--amber-500);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--amber-500);
  transform: translateX(50%);
  z-index: 2;
  border-radius: 50%;
}
.timeline-year { font-size: 30px; font-weight: 800; color: var(--navy-900); text-align: left; padding-left: 30px; }
.timeline-item:nth-child(even) .timeline-year { text-align: right; padding-right: 30px; padding-left: 0; }
.timeline-item:nth-child(even) .timeline-content { grid-column: 1; grid-row: 1; text-align: left; padding-left: 30px; }
.timeline-content h4 { font-size: 18px; font-weight: 700; color: var(--navy-900); margin-bottom: 6px; }
.timeline-content p { font-size: 14px; color: var(--steel-600); line-height: 1.7; }

/* ---------- Certifications ---------- */
.certifications-section {
  background: linear-gradient(135deg, var(--navy-900), var(--navy-700));
  position: relative; overflow: hidden;
}
.certifications-section .container { position: relative; z-index: 2; }
.certifications-section .section-title { color: #fff; }
.certifications-section .section-subtitle { color: var(--steel-400); }
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 32px 24px; text-align: center;
  transition: all 0.3s ease;
}
.cert-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--amber-500);
  transform: translateY(-3px);
}
.cert-card .name { font-size: 24px; font-weight: 800; color: var(--amber-500); margin-bottom: 8px; letter-spacing: 1px; }
.cert-card .desc { font-size: 13px; color: var(--steel-400); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-card {
  background: #fff; padding: 40px 32px;
  border: 1px solid var(--steel-200); text-align: center;
}
.contact-icon {
  width: 60px; height: 60px;
  background: var(--navy-900);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  color: var(--amber-500);
}
.contact-icon svg { width: 28px; height: 28px; }
.contact-card h3 { font-size: 19px; font-weight: 700; color: var(--navy-900); margin-bottom: 16px; }
.contact-card span { font-size: 14px; color: var(--steel-600); display: block; line-height: 1.8; }
.contact-main { display: grid; grid-template-columns: 1fr 1.3fr; gap: 60px; align-items: start; }
.contact-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.highlight-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 20px; background: #fff;
  border: 1px solid var(--steel-200);
}
.highlight-item svg { color: var(--amber-500); flex-shrink: 0; margin-top: 4px; }
.highlight-item strong { display: block; font-size: 15px; font-weight: 700; color: var(--navy-900); margin-bottom: 4px; }
.highlight-item span { font-size: 13px; color: var(--steel-600); }
.contact-form-box { background: #fff; padding: 48px 40px; border: 1px solid var(--steel-200); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { margin-bottom: 20px; }
.form-field label {
  display: block; font-size: 12px; font-weight: 700;
  letter-spacing: 0.5px; color: var(--navy-800); margin-bottom: 8px;
}
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 12px 16px;
  font-family: var(--font-ar); font-size: 14px;
  color: var(--steel-800);
  background: var(--steel-100);
  border: 2px solid transparent;
  transition: all 0.2s ease;
  border-radius: 4px;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none; border-color: var(--amber-500); background: #fff;
}
.form-field textarea { resize: vertical; min-height: 120px; }

/* ---------- FAQ ---------- */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 1000px; margin: 0 auto; }
.faq-item { background: var(--steel-100); border: 1px solid var(--steel-200); transition: all 0.2s ease; }
.faq-item.open { background: #fff; border-color: var(--amber-500); }
.faq-question {
  padding: 20px 24px; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-question h4 { font-size: 16px; font-weight: 700; color: var(--navy-900); }
.faq-toggle { width: 24px; height: 24px; position: relative; flex-shrink: 0; }
.faq-toggle span {
  position: absolute; width: 16px; height: 2px; background: var(--amber-500);
  transition: all 0.3s ease;
}
.faq-toggle span:first-child { top: 50%; right: 0; transform: translateY(-50%); }
.faq-toggle span:last-child { top: 50%; right: 0; transform: translateY(-50%) rotate(90deg); }
.faq-item.open .faq-toggle span:last-child { transform: translateY(-50%) rotate(0deg); opacity: 0; }
.faq-answer {
  max-height: 0; overflow: hidden;
  transition: all 0.3s ease; opacity: 0;
  padding: 0 24px;
}
.faq-item.open .faq-answer { max-height: 300px; opacity: 1; padding-bottom: 16px; }
.faq-answer p { font-size: 14px; color: var(--steel-600); line-height: 1.8; }

/* ---------- Applications ---------- */
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.app-card {
  background: #fff; padding: 36px 28px;
  border: 1px solid var(--steel-200); text-align: center;
  position: relative;
}
.app-num {
  position: absolute; top: 20px; left: 20px;
  font-size: 13px; font-weight: 800; color: var(--steel-300);
}
.app-card h3 { font-size: 18px; font-weight: 700; color: var(--navy-900); margin-bottom: 10px; }
.app-card p { font-size: 13px; color: var(--steel-600); line-height: 1.7; }

/* ---------- Partners ---------- */
.partners-grid { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.partner-chip {
  background: #fff; border: 1px solid var(--steel-200);
  padding: 16px 28px; font-size: 15px; font-weight: 700;
  color: var(--navy-800);
}
.partner-chip:hover { border-color: var(--amber-500); color: var(--amber-600); }

/* ---------- CTA ---------- */
.cta-section { background: var(--navy-900); padding: 70px 0; text-align: center; }
.cta-section h2 { font-size: 34px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.cta-section p { font-size: 16px; color: var(--steel-400); max-width: 640px; margin: 0 auto 32px; line-height: 1.8; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-900); color: var(--steel-400); padding-top: 80px; }
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 48px; padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-col h4 {
  font-size: 16px; font-weight: 700; color: #fff;
  margin-bottom: 24px; position: relative; padding-bottom: 12px;
}
.footer-col h4::after {
  content: ''; position: absolute; bottom: 0; right: 0;
  width: 32px; height: 2px; background: var(--amber-500);
}
.footer-col p { font-size: 14px; line-height: 1.8; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
  font-size: 14px; color: var(--steel-400);
  transition: color 0.2s ease;
  display: inline-flex; align-items: center; gap: 8px;
}
.footer-col ul li a:hover { color: var(--amber-500); }
.footer-col ul li a::before { content: '‹'; color: var(--amber-500); font-weight: 700; }
.footer-about .logo { margin-bottom: 16px; }
.footer-about .logo img { height: 50px; }
.social-icons { display: flex; gap: 12px; }
.social-icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--steel-400);
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.03);
}
.social-icon:hover { transform: translateY(-3px); }
.social-icon[title="Facebook"]:hover { background: #1877F2; border-color: #1877F2; color: #fff; }
.social-icon[title="LinkedIn"]:hover { background: #0A66C2; border-color: #0A66C2; color: #fff; }
.social-icon[title="WhatsApp"]:hover { background: #25D366; border-color: #25D366; color: #fff; }
.footer-contact li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; line-height: 1.7; margin-bottom: 14px;
}
.footer-contact-icon { color: var(--amber-500); font-size: 14px; margin-top: 3px; flex-shrink: 0; }
.footer-bottom {
  padding: 24px 0;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: var(--steel-500);
}
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a:hover { color: var(--amber-500); }

.bg-white { background: #fff; }
.bg-steel { background: var(--steel-100); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .features-grid, .capabilities-grid, .cert-grid, .app-grid { grid-template-columns: 1fr 1fr; }
  .about-intro { grid-template-columns: 1fr; gap: 40px; }
  .contact-main { grid-template-columns: 1fr; gap: 40px; }
  .product-detail-card { grid-template-columns: 1fr; }
  .product-detail-img { min-height: 300px; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .header-inner { height: 64px; padding: 0 20px; }
  .main-nav, .header-phone { display: none; }
  .hamburger { display: flex; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .section-subtitle { font-size: 15px; }
  .section-header { margin-bottom: 40px; }
  .hero { padding: 120px 0 80px; min-height: auto; }
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 16px; }
  .hero-stats { grid-template-columns: 1fr 1fr; margin-top: 48px; }
  .features-grid, .capabilities-grid, .cert-grid, .app-grid, .contact-grid, .faq-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; padding-bottom: 40px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .page-header { padding: 120px 0 60px; }
  .page-header-content h1 { font-size: 30px; }
  .page-header-content p { font-size: 15px; }
  .product-detail-body { padding: 28px 24px; }
  .product-detail-name { font-size: 21px; }
  .spec-table { grid-template-columns: 1fr; }
  .products-cta-inner { flex-direction: column; text-align: center; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .about-intro img { height: 280px; }
  .timeline::before { right: 8px; transform: none; }
  .timeline-dot { right: 8px; transform: none; }
  .timeline-item, .timeline-item:nth-child(even) .timeline-content { display: block; padding-right: 32px; text-align: right !important; }
  .timeline-year, .timeline-item:nth-child(even) .timeline-year { text-align: right; padding: 0 0 8px; }
  .form-grid { grid-template-columns: 1fr; }
  .contact-form-box { padding: 32px 24px; }
  .contact-highlights { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
}