/* ======================================
   青岛崂玺山涧饮品有限公司 - 企业官网
   风格：简约大气
   ====================================== */

/* ----- CSS 自定义属性 ----- */
:root {
  --color-primary: #0d7377;
  --color-primary-dark: #085e61;
  --color-primary-light: #e0f0f1;
  --color-primary-hover: #0b8a8f;
  --color-accent: #b8864e;
  --color-accent-light: #f5ede4;
  --color-white: #ffffff;
  --color-bg: #f9fafb;
  --color-bg-alt: #f2f4f5;
  --color-text: #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-text-muted: #9ca3af;
  --color-border: #e5e7eb;
  --color-border-light: #f0f1f3;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  --container-max: 1200px;
  --container-narrow: 900px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.08);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-hover); }

ul, ol { list-style: none; }

/* ----- 容器 ----- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}
.container-narrow { max-width: var(--container-narrow); }

/* ----- 排版 ----- */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 65ch;
}

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  line-height: 1.4;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-white);
}
.btn-accent:hover {
  background-color: #a07040;
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-lg { padding: 0.9rem 2.25rem; font-size: 1.05rem; }

/* ----- 导航栏 ----- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base);
}
.site-header.scrolled { box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--color-primary), #1a9e9e);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.1rem;
  font-weight: 700;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-text-main { font-size: 1.05rem; letter-spacing: 0.05em; }
.logo-text-sub { font-size: 0.65rem; color: var(--color-text-secondary); font-weight: 400; letter-spacing: 0.08em; }

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.main-nav a {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
  border-radius: 1px;
}

.main-nav a:hover,
.main-nav a.active { color: var(--color-primary); }
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

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

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ----- 页面主要区域 ----- */
.page-main { padding-top: 68px; }

/* ----- 页面横幅 ----- */
.page-banner {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1a8a8a 100%);
  padding: var(--space-5xl) 0 var(--space-4xl);
  color: var(--color-white);
  text-align: center;
}

.page-banner h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.page-banner p {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  opacity: 0.85;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ----- Hero Section ----- */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #f0f7f7 0%, #e8f4f5 40%, #faf6f0 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%; right: -10%;
  width: 60%; height: 80%;
  background: radial-gradient(ellipse at center, rgba(13, 115, 119, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary-light), transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--space-5xl) 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: var(--space-xl);
  letter-spacing: 0.03em;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  max-width: 800px;
}

.hero h1 span { color: var(--color-primary); }

.hero p {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ----- Section 通用 ----- */
.section { padding: var(--space-4xl) 0; }
.section-alt { background-color: var(--color-bg); }

.section-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

/* ----- Features ----- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.feature-card {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  background-color: var(--color-white);
}

.feature-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary-light), #d0ecec);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.feature-card p {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ----- Stats ----- */
.stats-section {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-4xl) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-item .stat-number {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-sm);
}

.stat-item .stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
  line-height: 1.5;
}

/* ----- Services ----- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.service-card {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  background-color: var(--color-white);
  transition: all var(--transition-base);
}

.service-card:hover {
  border-color: var(--color-accent-light);
  box-shadow: var(--shadow-md);
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.service-card h3 .accent { color: var(--color-primary); }

.service-card p {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.service-card ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.service-card ul li {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.service-card ul li::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background-color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 0.6em;
}

/* ----- CTA ----- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-4xl) 0;
}

.cta-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.cta-section p {
  font-size: 1.05rem;
  opacity: 0.85;
  margin-bottom: var(--space-xl);
  max-width: 500px;
  margin-left: auto; margin-right: auto;
}

.cta-section .btn { border: 1.5px solid rgba(255, 255, 255, 0.3); }
.cta-section .btn:hover {
  border-color: var(--color-white);
  background-color: var(--color-white);
  color: var(--color-primary);
}

/* ----- About Page ----- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.about-intro-text h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}

.about-intro-text p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.about-intro-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-light), #d0ecec);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  position: relative;
}

.about-intro-image::before {
  content: attr(data-char);
  position: absolute;
  font-size: 12rem;
  font-weight: 700;
  opacity: 0.1;
  color: var(--color-primary);
}

/* 价值观 */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.value-card { text-align: center; padding: var(--space-2xl); }

.value-card .value-icon {
  width: 56px; height: 56px;
  margin: 0 auto var(--space-lg);
  border-radius: 50%;
  background-color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.value-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.value-card p {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 发展历程 */
.timeline {
  position: relative;
  padding-left: var(--space-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary-light), var(--color-primary), var(--color-primary-light));
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-2xl);
  padding-left: var(--space-xl);
}

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

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-2xl) - 5px);
  top: 4px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background-color: var(--color-primary);
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.timeline-year {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.timeline-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ----- Products Page ----- */
.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.product-showcase.reverse { direction: rtl; }
.product-showcase.reverse > * { direction: ltr; }

.product-info h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.product-info p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.product-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.product-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  font-size: 0.925rem;
  color: var(--color-text-secondary);
}

.product-features li .check {
  width: 20px; height: 20px;
  border-radius: 50%;
  background-color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-primary);
}

.product-visual {
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary-light), #d0ecec);
  min-height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  position: relative;
  overflow: hidden;
}

.product-visual::before {
  content: '';
  position: absolute;
  width: 150%; height: 150%;
  background: radial-gradient(circle at 30% 40%, rgba(13, 115, 119, 0.08), transparent 50%);
}

.product-visual .visual-icon {
  position: relative;
  z-index: 1;
  text-align: center;
}

.product-visual .visual-icon .label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: var(--space-sm);
  opacity: 0.7;
}

/* 品质保障 */
.quality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.quality-card {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  text-align: center;
  transition: all var(--transition-base);
}

.quality-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.quality-card .quality-icon {
  width: 56px; height: 56px;
  margin: 0 auto var(--space-lg);
  background-color: var(--color-accent-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.quality-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.quality-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ----- Contact ----- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-item {
  display: flex;
  gap: var(--space-lg);
}

.contact-item-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
}

.contact-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.contact-item p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.contact-form {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
}

.form-group { margin-bottom: var(--space-lg); }

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.form-input,
.form-textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.1);
}

.form-textarea { min-height: 140px; resize: vertical; }

.form-input::placeholder,
.form-textarea::placeholder { color: var(--color-text-muted); }

/* ----- Footer ----- */
.site-footer {
  background-color: var(--color-text);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand .logo { color: var(--color-white); margin-bottom: var(--space-lg); }

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-col ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-col ul a:hover { color: var(--color-white); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.85rem;
}

/* ----- 滚动动画 ----- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* ----- Responsive ----- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-2xl); }
  .about-intro { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .about-intro-image { min-height: 300px; order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-2xl); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .quality-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .hero h1 { font-size: clamp(1.8rem, 6vw, 2.5rem); }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }

  .features-grid, .services-grid, .values-grid, .quality-grid { grid-template-columns: 1fr; }
  .page-banner { padding: var(--space-4xl) 0 var(--space-3xl); }
  .contact-grid { grid-template-columns: 1fr; }

  .product-showcase { grid-template-columns: 1fr; gap: var(--space-xl); }
  .product-showcase.reverse { direction: ltr; }

  .section { padding: var(--space-3xl) 0; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-xl); }
  .stat-item .stat-number { font-size: 1.75rem; }
  .timeline { padding-left: var(--space-lg); }
  .timeline-item::before { left: calc(-1 * var(--space-lg) - 5px); }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-md); }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
  .about-intro-image { min-height: 220px; }
  .product-visual { min-height: 240px; }
}