/* ============================================================
   PROFESSIONAL MACHINERY EQUIPMENT MANUFACTURER
   Design System — 日系工業極簡風格
   ============================================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
  /* Primary Palette */
  --color-primary: #1A365D;
  --color-primary-light: #1E4D8C;
  --color-primary-dark: #0F2440;
  --color-primary-surface: #EBF0F7;

  /* Accent */
  --color-accent-red: #E53E3E;
  --color-accent-red-hover: #C53030;
  --color-accent-green: #38A169;
  --color-accent-green-hover: #2F855A;

  /* Neutrals */
  --color-bg: #F8FAFC;
  --color-bg-white: #FFFFFF;
  --color-text-primary: #1E293B;
  --color-text-secondary: #64748B;
  --color-text-muted: #94A3B8;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  /* Typography */
  --font-heading: 'Noto Sans JP', sans-serif;
  --font-body: 'Noto Sans JP', sans-serif;

  /* Spacing */
  --section-py: 5rem;
  --section-py-mobile: 3rem;
  --container-px: 1.5rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(26, 54, 93, 0.06);
  --shadow-md: 0 4px 12px rgba(26, 54, 93, 0.08);
  --shadow-lg: 0 12px 32px rgba(26, 54, 93, 0.10);
  --shadow-xl: 0 20px 48px rgba(26, 54, 93, 0.12);

  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-in-out: cubic-bezier(0.42, 0.0, 0.58, 1.0);
  --transition-fast: 200ms;
  --transition-base: 250ms;
  --transition-slow: 300ms;

  /* Border Radius */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast) var(--ease-out);
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.3;
  color: var(--color-primary-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.625rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

.section-title {
  font-size: clamp(1.625rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 0.75rem;
  color: var(--color-primary-dark);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.section-title-en {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent-red);
  margin-bottom: 0.5rem;
}

/* --- Container --- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--container-px);
}

/* --- Header / Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base) var(--ease-out);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--container-px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.header-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 1.125rem;
  flex-shrink: 0;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-surface);
}

.nav-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast) var(--ease-out);
}

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 200px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base) var(--ease-out);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
}

.dropdown-link {
  display: block;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast) var(--ease-out);
}

.dropdown-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-surface);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 101;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: all var(--transition-base) var(--ease-out);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1E4D8C 100%);
  overflow: hidden;
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image:
    linear-gradient(30deg, #ffffff 1px, transparent 1px),
    linear-gradient(-30deg, #ffffff 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero::after {
  content: '';
  position: absolute;
  right: -5%;
  bottom: -10%;
  width: 55%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(255,255,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 6rem 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 2px;
  padding: 0.5rem 1.125rem;
  border-radius: 2px;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.25rem, 5.5vw, 3.5rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 1.25rem;
}

.hero-title span {
  display: block;
  color: #93C5FD;
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 500;
  letter-spacing: 1px;
  margin-top: 0.5rem;
}

.hero-desc {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.78);
  line-height: 1.75;
  margin-bottom: 2.25rem;
  max-width: 560px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 0.875rem 2rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base) var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: #fff;
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--color-primary-surface);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.35);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.6);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--color-accent-red);
  color: #fff;
}

.btn-accent:hover {
  background: var(--color-accent-red-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(229, 62, 62, 0.25);
}

.btn-dark {
  background: var(--color-primary);
  color: #fff;
}

.btn-dark:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  padding: 0.625rem 1.25rem;
}

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

.btn-sm {
  font-size: 0.8125rem;
  padding: 0.625rem 1.25rem;
}

.btn svg {
  width: 18px;
  height: 18px;
}

/* --- Section Base --- */
.section {
  padding: var(--section-py) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header-left {
  text-align: left;
  margin-bottom: 3rem;
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image-wrap {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.about-image-wrap img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.stat-item {
  text-align: center;
  padding: 1.25rem 0.75rem;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-light);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-accent-red);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

/* --- Products Section --- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.product-card {
  background: #fff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base) var(--ease-out);
  box-shadow: var(--shadow-sm);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}

.product-card-image {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: var(--color-primary-surface);
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-out);
}

.product-card:hover .product-card-image img {
  transform: scale(1.06);
}

.product-card-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  background: var(--color-accent-red);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.25rem 0.625rem;
  letter-spacing: 1px;
}

.product-card-body {
  padding: 1.25rem;
}

.product-card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-primary-dark);
}

.product-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.product-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 0.25rem 0.625rem;
  border-radius: 2px;
  letter-spacing: 0.5px;
}

.tag-blue {
  background: var(--color-primary-surface);
  color: var(--color-primary);
}

.tag-green {
  background: #F0FFF4;
  color: var(--color-accent-green);
}

/* --- Features / Strength Ribbon --- */
.features-ribbon {
  background: var(--color-primary);
  padding: 3rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.feature-item {
  text-align: center;
  color: #fff;
  padding: 1rem;
}

.feature-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 1rem;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.feature-item h4 {
  color: #fff;
  font-size: 0.9375rem;
  margin-bottom: 0.375rem;
}

.feature-item p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.5;
}

/* --- Projects Section --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.project-card {
  background: #fff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base) var(--ease-out);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.project-card-image {
  height: 260px;
  overflow: hidden;
  background: var(--color-primary-surface);
}

.project-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-out);
}

.project-card:hover .project-card-image img {
  transform: scale(1.05);
}

.project-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-card-category {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--color-accent-red);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.project-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.project-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
}

.project-card-meta {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-light);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --- News Section --- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.news-card {
  background: #fff;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base) var(--ease-out);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.news-card-image {
  height: 180px;
  overflow: hidden;
  background: var(--color-primary-surface);
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-card-body {
  padding: 1.25rem;
}

.news-card-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.news-card-title {
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-category {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--color-accent-red);
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: 5rem 0;
  text-align: center;
  color: #fff;
}

.cta-section h2 {
  color: #fff;
  margin-bottom: 1rem;
}

.cta-section p {
  color: rgba(255,255,255,0.75);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.65);
  font-size: 0.875rem;
}

.footer-top {
  padding: 4rem 0 3rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
}

.footer-brand h4 {
  color: #fff;
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.footer-col h5 {
  color: #fff;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
}

.footer-col ul li {
  margin-bottom: 0.5rem;
}

.footer-col ul li a {
  color: rgba(255,255,255,0.55);
  font-size: 0.8125rem;
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: 4rem 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent-red), var(--color-accent-green));
}

.page-hero h1 {
  color: #fff;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 0.75rem;
}

.page-hero .breadcrumb {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.6);
}

.page-hero .breadcrumb a {
  color: rgba(255,255,255,0.8);
}

.page-hero .breadcrumb a:hover {
  color: #fff;
}

.page-hero .breadcrumb span {
  margin: 0 0.5rem;
}

/* --- About Page --- */
.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  margin-top: 3rem;
}

.value-card {
  background: #fff;
  padding: 2rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-light);
  text-align: center;
  transition: all var(--transition-base) var(--ease-out);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.value-card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.25rem;
  background: var(--color-primary-surface);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-primary);
}

.value-card h4 {
  margin-bottom: 0.5rem;
}

.value-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.1rem;
  top: 4px;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px var(--color-primary);
}

.timeline-year {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent-red);
  letter-spacing: 1px;
  margin-bottom: 0.25rem;
}

.timeline-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.timeline-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* --- Products Page --- */
.product-category-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.cat-btn {
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast) var(--ease-out);
  white-space: nowrap;
}

.cat-btn:hover,
.cat-btn.active {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

/* --- Product Detail --- */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.product-gallery-main {
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-primary-surface);
  margin-bottom: 0.75rem;
}

.product-gallery-main img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.product-gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.product-gallery-thumbs img {
  width: 100%;
  height: 90px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
}

.product-gallery-thumbs img:hover,
.product-gallery-thumbs img.active {
  border-color: var(--color-primary);
}

.product-info h1 {
  margin-bottom: 0.75rem;
}

.product-info-subtitle {
  font-size: 0.875rem;
  color: var(--color-accent-red);
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.product-info-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.spec-item {
  display: flex;
  gap: 0.5rem;
  font-size: 0.875rem;
  padding: 0.625rem;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.spec-label {
  color: var(--color-text-muted);
  min-width: 60px;
}

.spec-value {
  font-weight: 600;
  color: var(--color-text-primary);
}

/* --- Contact Page --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info-cards {
  display: grid;
  gap: 1.25rem;
}

.contact-info-card {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.contact-info-card:hover {
  box-shadow: var(--shadow-sm);
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: var(--color-primary-surface);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.125rem;
}

.contact-info-card h5 {
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.contact-info-card p {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.contact-form-wrap {
  background: #fff;
  padding: 2rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-light);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
  color: var(--color-text-primary);
}

.form-label .required {
  color: var(--color-accent-red);
  margin-left: 2px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- News Detail --- */
.article-layout {
  max-width: 800px;
  margin: 0 auto;
}

.article-hero-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: 2rem;
}

.article-meta {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.article-category {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--color-accent-red);
  background: #FFF5F5;
  padding: 0.25rem 0.625rem;
}

.article-body {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text-primary);
}

.article-body p {
  margin-bottom: 1.25rem;
}

.article-body h3 {
  margin: 2rem 0 0.75rem;
}

/* --- Floating Contact Widget --- */
.floating-contact {
  position: fixed;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.fc-item {
  width: 48px;
  height: 48px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast) var(--ease-out);
  box-shadow: var(--shadow-sm);
  color: var(--color-primary);
}

.fc-item:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  transform: translateX(-4px);
  box-shadow: var(--shadow-md);
}

.fc-item svg {
  width: 20px;
  height: 20px;
}

.fc-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-primary-dark);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast) var(--ease-out);
  pointer-events: none;
}

.fc-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--color-primary-dark);
}

.fc-item:hover .fc-tooltip {
  opacity: 1;
  visibility: visible;
}

/* WeChat QR Popup */
.fc-qr-popup {
  position: absolute;
  right: calc(100% + 12px);
  bottom: 0;
  background: #fff;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast) var(--ease-out);
  pointer-events: none;
  width: 140px;
  text-align: center;
}

.fc-item.wechat:hover .fc-qr-popup {
  opacity: 1;
  visibility: visible;
}

.fc-qr-placeholder {
  width: 120px;
  height: 120px;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  margin: 0 auto;
}

.fc-qr-placeholder svg {
  width: 48px;
  height: 48px;
  color: var(--color-accent-green);
}

.fc-qr-text {
  font-size: 0.6875rem;
  color: var(--color-text-secondary);
  margin-top: 0.375rem;
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base) var(--ease-out);
  z-index: 89;
  box-shadow: var(--shadow-md);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* --- Search Bar --- */
.search-bar {
  display: flex;
  max-width: 400px;
  margin: 0 auto 3rem;
}

.search-bar input {
  flex: 1;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  border: 1px solid var(--color-border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  outline: none;
  font-family: var(--font-body);
}

.search-bar input:focus {
  border-color: var(--color-primary);
}

.search-bar button {
  padding: 0.75rem 1.25rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  font-size: 0.9375rem;
  transition: background var(--transition-fast);
}

.search-bar button:hover {
  background: var(--color-primary-light);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  :root {
    --section-py: 4rem;
  }

  .about-grid,
  .product-detail-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-values {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-image-wrap img {
    height: 320px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-py: 2.5rem;
  }

  /* Mobile Navigation */
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 5rem 1.5rem 2rem;
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base) var(--ease-out);
    overflow-y: auto;
    z-index: 100;
  }

  .main-nav.open {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    padding: 0.75rem 0.5rem;
    font-size: 0.9375rem;
    border-bottom: 1px solid var(--color-border-light);
    border-radius: 0;
  }

  .nav-dropdown {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    opacity: 1;
    visibility: visible;
    display: none;
    padding: 0 0 0 1rem;
    background: var(--color-bg);
    min-width: auto;
  }

  .nav-item.open .nav-dropdown {
    display: block;
  }

  /* Mobile overlay */
  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .nav-overlay.open {
    opacity: 1;
    visibility: visible;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
  }

  .about-values {
    grid-template-columns: 1fr;
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }

  .hero {
    min-height: 70vh;
  }

  .hero-content {
    padding: 4rem 0;
  }

  .article-hero-image {
    height: 240px;
  }

  .product-category-nav {
    gap: 0.375rem;
  }

  .cat-btn {
    font-size: 0.75rem;
    padding: 0.5rem 0.875rem;
  }

  .product-specs {
    grid-template-columns: 1fr;
  }

  .floating-contact {
    right: 0.5rem;
  }

  .fc-item {
    width: 40px;
    height: 40px;
  }

  .fc-item svg {
    width: 18px;
    height: 18px;
  }
}

@media (max-width: 480px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .hero-cta-group {
    flex-direction: column;
  }

  .hero-cta-group .btn {
    width: 100%;
  }
}