/* ==========================================================================
   四川旺柴科技有限公司 - 官方网站样式表 (简约·实用·企业风)
   ========================================================================== */

:root {
  --primary: #0a3a78;
  --primary-hover: #072856;
  --primary-light: #eff6ff;
  --accent: #e05615;
  --accent-hover: #c2410c;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --bg-body: #ffffff;
  --bg-gray: #f8fafc;
  --border: #e2e8f0;
  --border-light: #edf2f7;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--primary);
  border-color: #cbd5e1;
}

.btn-secondary:hover {
  background-color: #f1f5f9;
  border-color: #94a3b8;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary-light);
}

.btn-sm {
  font-size: 13px;
  padding: 6px 14px;
}

.btn-xs {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 4px;
}

/* Top Bar */
.top-bar {
  background-color: #0f172a;
  color: #94a3b8;
  font-size: 12px;
  padding: 8px 0;
  border-bottom: 1px solid #1e293b;
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.top-contact {
  display: flex;
  gap: 12px;
  align-items: center;
}

.top-contact strong {
  color: #f8fafc;
}

/* Header */
.main-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.brand-link img {
  height: 42px;
  width: auto;
  display: block;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu {
  display: flex;
  gap: 28px;
}

.nav-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Section Shared */
.section {
  padding: 64px 0;
}

.section-gray {
  background-color: var(--bg-gray);
}

.section-title {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 40px auto;
}

.section-title h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.section-title p {
  font-size: 14.5px;
  color: var(--text-muted);
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, #072856 0%, #0a3a78 60%, #0f4c8a 100%);
  color: #ffffff;
  padding: 60px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.15);
  color: #bae6fd;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
  color: #ffffff;
}

.hero-desc {
  font-size: 15px;
  color: #cbd5e1;
  line-height: 1.7;
  margin-bottom: 24px;
}

.hero-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
  background: rgba(0, 0, 0, 0.15);
  padding: 16px 20px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.feat-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  color: #e2e8f0;
}

.feat-dot {
  width: 7px;
  height: 7px;
  background: #38bdf8;
  border-radius: 50%;
  margin-top: 7px;
  flex-shrink: 0;
}

.feat-item strong {
  color: #ffffff;
}

.hero-btns {
  display: flex;
  gap: 14px;
}

.hero-btns .btn {
  padding: 11px 26px;
  font-size: 15px;
}

.hero-img-box {
  background: #ffffff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
  position: relative;
}

.hero-img-box img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  display: block;
}

.hero-caption {
  padding: 10px 16px;
  background: #ffffff;
  color: var(--text-muted);
  font-size: 12.5px;
  font-weight: 500;
  border-top: 1px solid var(--border);
  text-align: center;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.product-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: #cbd5e1;
}

.product-img {
  height: 200px;
  background: #0f172a;
  position: relative;
  overflow: hidden;
}

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.product-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--primary);
  color: #ffffff;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
}

.product-info {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.model-code {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.product-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.product-summary {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.product-specs {
  background: var(--bg-gray);
  padding: 12px 14px;
  border-radius: 4px;
  font-size: 12.5px;
  color: #475569;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
  border: 1px solid var(--border-light);
}

.product-specs li::before {
  content: "• ";
  color: var(--primary);
  font-weight: bold;
}

.product-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.price-hint {
  font-size: 13px;
  font-weight: 600;
  color: #15803d;
}

/* Scenes Grid */
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.scene-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.2s;
}

.scene-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.scene-img {
  height: 140px;
  background: #1e293b;
}

.scene-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.scene-body {
  padding: 16px;
}

.scene-body h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.scene-body p {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* About Us Box */
.about-box {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  background: #ffffff;
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.about-text h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  margin: 6px 0 14px 0;
}

.about-text p {
  font-size: 14px;
  color: #475569;
  line-height: 1.75;
  margin-bottom: 14px;
}

.about-points {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.about-points strong {
  font-size: 13.5px;
  color: var(--primary);
  display: block;
  margin-bottom: 2px;
}

.about-points p {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 0;
}

.about-img {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.about-img img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
}

.about-caption {
  background: var(--bg-gray);
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  border-top: 1px solid var(--border);
}

/* Contact Wrap */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.contact-info {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.contact-info h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.company-sub {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 24px;
}

.c-item {
  margin-bottom: 16px;
  font-size: 14px;
  color: #475569;
}

.c-label {
  font-weight: 600;
  color: var(--text-main);
}

.phone-highlight {
  font-size: 18px;
  color: var(--accent);
}

.sample-tip {
  margin-top: 24px;
  padding: 14px;
  background: #eff6ff;
  border-left: 4px solid var(--primary);
  border-radius: 4px;
  font-size: 13px;
  color: #1e3a8a;
  line-height: 1.6;
}

.contact-form-box {
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.contact-form-box h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
}

.form-row {
  margin-bottom: 14px;
}

.form-row label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 5px;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  font-size: 13.5px;
  color: var(--text-main);
  background: #ffffff;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(10, 58, 120, 0.15);
}

/* Footer */
.footer {
  background-color: #0f172a;
  color: #94a3b8;
  padding: 36px 0 28px;
  font-size: 13px;
  border-top: 1px solid #1e293b;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  border-bottom: 1px solid #1e293b;
  padding-bottom: 18px;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 13.5px;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: #38bdf8;
}

.footer-sep {
  color: #334155;
  font-size: 12px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  width: 100%;
}

.footer strong {
  color: #f8fafc;
}

.footer-small {
  font-size: 12px;
  color: #64748b;
  margin-top: 4px;
}

/* News Center Layout */
.news-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: stretch;
}

/* Left: Featured Card */
.news-featured {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  position: relative;
}

.news-featured:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: #cbd5e1;
}

.news-featured-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.news-badge {
  font-size: 11.5px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  line-height: 1.4;
  display: inline-block;
}

.badge-primary { background: #e0f2fe; color: #0284c7; }
.badge-success { background: #dcfce7; color: #15803d; }
.badge-warning { background: #fef3c7; color: #b45309; }
.badge-purple  { background: #f3e8ff; color: #7e22ce; }

.news-date-text {
  font-size: 12.5px;
  color: var(--text-light);
}

.news-featured-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 12px;
  transition: color 0.15s;
}

.news-featured:hover .news-featured-title {
  color: var(--primary);
}

.news-featured-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
}

.news-featured-points {
  background: var(--bg-gray);
  border-radius: 6px;
  padding: 14px 16px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.news-point-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12.5px;
  color: #334155;
  line-height: 1.5;
}

.point-icon {
  color: #16a34a;
  font-weight: 700;
  flex-shrink: 0;
}

.news-featured-btn {
  margin-top: auto;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Right: News List */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.news-list-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-list-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: #cbd5e1;
}

.news-item-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.news-item-title {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 6px;
  transition: color 0.15s;
}

.news-list-item:hover .news-item-title {
  color: var(--primary);
}

.news-item-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item-link {
  margin-top: auto;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
}

/* News Article Reading Modal */
.news-modal-overlay {
  display: none !important;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.news-modal-overlay.active {
  display: flex !important;
}

.news-modal-card {
  background: #ffffff;
  width: 100%;
  max-width: 720px;
  max-height: 86vh;
  border-radius: 8px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalFadeIn 0.2s ease-out;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.news-modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.news-modal-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
}

.news-modal-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
  display: flex;
  gap: 16px;
}

.news-close-btn {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-light);
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}

.news-close-btn:hover {
  color: var(--text-main);
}

.news-modal-body {
  padding: 24px;
  overflow-y: auto;
  font-size: 14px;
  color: #334155;
  line-height: 1.8;
}

.news-modal-body p {
  margin-bottom: 14px;
}

.news-modal-footer {
  padding: 12px 24px;
  background: var(--bg-gray);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
}

/* Mobile Toggle & Overlay */
.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: 6px;
  transition: all 0.2s;
}

.mobile-toggle:hover {
  background-color: #f1f5f9;
}

.mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--text-main);
  transition: all 0.25s ease;
  border-radius: 2px;
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
  z-index: 98;
}

.mobile-overlay.active {
  display: block;
}

/* Product Selection Matrix */
.matrix-wrapper {
  margin-top: 48px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.matrix-header {
  padding: 20px 24px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
}

.matrix-header h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.matrix-header p {
  font-size: 13px;
  color: var(--text-muted);
}

.matrix-table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
  min-width: 860px;
}

.matrix-table th {
  background: #f1f5f9;
  color: var(--text-main);
  font-weight: 600;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.matrix-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  vertical-align: middle;
  line-height: 1.5;
}

.matrix-table tr:last-child td {
  border-bottom: none;
}

.matrix-table tr:hover td {
  background-color: #f8fafc;
}

.table-tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 3px;
  background: #f1f5f9;
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: normal;
}

.table-tag-primary {
  background: #e0f2fe;
  color: #0369a1;
}

/* FAQ Accordion */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.faq-item:hover {
  border-color: #cbd5e1;
}

.faq-item.active {
  border-color: #93c5fd;
  box-shadow: 0 4px 12px -2px rgba(10, 58, 120, 0.08);
}

.faq-question {
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  background: #ffffff;
}

.faq-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  padding-right: 16px;
}

.faq-icon {
  font-size: 22px;
  font-weight: 300;
  color: var(--primary);
  transition: transform 0.25s ease;
  line-height: 1;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--accent);
}

.faq-answer {
  display: none;
  padding: 0 20px 18px 20px;
  font-size: 14px;
  color: #475569;
  line-height: 1.7;
  border-top: 1px solid #f1f5f9;
}

.faq-item.active .faq-answer {
  display: block;
  padding-top: 14px;
}

/* Smart Form Feedback */
.form-success-card {
  padding: 36px 24px;
  text-align: center;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius);
  animation: fadeIn 0.3s ease;
}

.success-icon {
  width: 52px;
  height: 52px;
  background: #22c55e;
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: bold;
  margin: 0 auto 16px auto;
}

.form-success-card h4 {
  font-size: 18px;
  font-weight: 600;
  color: #166534;
  margin-bottom: 8px;
}

.form-success-card p {
  font-size: 14px;
  color: #15803d;
  line-height: 1.6;
  margin-bottom: 22px;
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 42px;
  height: 42px;
  background-color: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(10, 58, 120, 0.28);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.25s ease;
  z-index: 90;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: #072b59;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(10, 58, 120, 0.38);
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .product-grid {
    grid-template-columns: 1fr;
  }
  .scenes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .news-layout {
    grid-template-columns: 1fr;
  }
  .about-box {
    grid-template-columns: 1fr;
  }
  .contact-wrap {
    grid-template-columns: 1fr;
  }
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 840px) {
  .header-right {
    gap: 0;
  }
  .header-actions {
    display: none;
  }
  .mobile-toggle {
    display: flex !important;
  }
  .nav-menu-wrap {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #ffffff;
    padding: 12px 20px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px -6px rgba(0, 0, 0, 0.12);
    transform: translateY(-130%);
    transition: transform 0.25s ease;
    z-index: 99;
  }
  .nav-menu-wrap.active {
    transform: translateY(0);
  }
  .nav-menu-wrap .nav-menu {
    flex-direction: column;
    gap: 0;
  }
  .nav-menu-wrap .nav-menu a {
    display: block;
    padding: 12px 4px;
    font-size: 15px;
    border-bottom: 1px solid #f1f5f9;
  }
}

@media (max-width: 640px) {
  .top-bar {
    display: none;
  }
  .header-inner {
    height: 60px;
  }
  .brand-link img {
    height: 32px;
  }
  .nav-menu-wrap {
    top: 60px;
  }
  .hero-title {
    font-size: 24px;
  }
  .hero-btns {
    flex-direction: column;
    gap: 10px;
  }
  .hero-btns .btn {
    width: 100%;
    text-align: center;
  }
  .scenes-grid {
    grid-template-columns: 1fr;
  }
  .footer-links {
    gap: 8px;
  }
  .footer-sep {
    display: none;
  }
  .footer-links a {
    padding: 3px 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    font-size: 12px;
  }
  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 38px;
    height: 38px;
  }
}