/* ===== 字体引入 ===== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@400;600;700;900&display=swap');

/* ===== CSS 变量 ===== */
:root {
  --color-bg: #1A1D23;
  --color-bg-alt: #14161B;
  --color-bg-card: #1F232B;
  --color-primary: #0D9488;
  --color-primary-light: #14B8A6;
  --color-primary-dark: #0F766E;
  --color-accent: #D4A853;
  --color-accent-light: #E8C97A;
  --color-text: #E2E8F0;
  --color-text-muted: #94A3B8;
  --color-text-dim: #64748B;
  --color-white: #FAF7F2;
  --color-border: #2D3340;
  --color-border-light: #3D4452;
  --font-heading: 'Noto Serif SC', serif;
  --font-body: 'Noto Sans SC', sans-serif;
  --max-width: 1280px;
  --nav-height: 72px;
}

/* ===== 全局重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ===== 工具类 ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
  line-height: 1.3;
}
.section-desc {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  line-height: 1.8;
}

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
  background: transparent;
}
.navbar.scrolled {
  background: rgba(26, 29, 35, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.02em;
}
.navbar-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.navbar-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.navbar-links a {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-muted);
  transition: color 0.25s;
  position: relative;
}
.navbar-links a:hover,
.navbar-links a.active {
  color: var(--color-white);
}
.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}
.navbar-links a:hover::after,
.navbar-links a.active::after { width: 100%; }
.navbar-cta {
  padding: 8px 22px;
  border: 1px solid var(--color-primary);
  border-radius: 6px;
  color: var(--color-primary-light) !important;
  font-size: 0.85rem !important;
  font-weight: 500 !important;
  transition: all 0.3s !important;
}
.navbar-cta:hover {
  background: var(--color-primary);
  color: var(--color-white) !important;
}
.navbar-cta::after { display: none !important; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  padding: 4px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all 0.3s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ===== Hero 区域 ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--color-bg-alt);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 35%, rgba(13,148,136,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 80% 40% at 80% 60%, rgba(212,168,83,0.06) 0%, transparent 60%);
  pointer-events: none;
}
/* 网格背景 */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(45,51,64,0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45,51,64,0.15) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 70%);
  pointer-events: none;
}
/* 粒子 */
.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: floatUp 8s infinite ease-in;
  opacity: 0;
}
@keyframes floatUp {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 0.8; }
  90% { opacity: 0; }
  100% { transform: translateY(-10vh) scale(1.5); opacity: 0; }
}
/* 恐龙剪影 */
.dino-silhouette {
  position: absolute;
  right: -5%;
  bottom: 10%;
  width: 45%;
  max-width: 650px;
  opacity: 0.04;
  pointer-events: none;
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(13,148,136,0.1);
  border: 1px solid rgba(13,148,136,0.2);
  border-radius: 50px;
  padding: 6px 18px;
  font-size: 0.8rem;
  color: var(--color-primary-light);
  margin-bottom: 28px;
  animation: fadeInUp 0.8s ease forwards;
}
.hero-badge .dot {
  width: 6px; height: 6px;
  background: var(--color-primary-light);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s 0.15s ease forwards;
  opacity: 0;
}
.hero h1 .accent { color: var(--color-primary-light); }
.hero h1 .gold { color: var(--color-accent); }
.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--color-text-muted);
  margin-bottom: 36px;
  line-height: 1.8;
  max-width: 560px;
  animation: fadeInUp 0.8s 0.3s ease forwards;
  opacity: 0;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s 0.45s ease forwards;
  opacity: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.3s;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(13,148,136,0.3);
}
.btn-primary:hover {
  background: var(--color-primary-light);
  box-shadow: 0 6px 30px rgba(13,148,136,0.45);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border-light);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
  background: rgba(13,148,136,0.06);
}
.btn-gold {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}
.btn-gold:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* ===== 淡入动画 ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s cubic-bezier(0.16,1,0.3,1);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 公司简介区域 ===== */
.about-section {
  background: var(--color-bg);
  position: relative;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-text p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.9;
  margin-bottom: 16px;
}
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px 24px;
  text-align: center;
  transition: all 0.3s;
}
.stat-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 30px rgba(13,148,136,0.08);
  transform: translateY(-4px);
}
.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary-light);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

/* ===== 核心产品 ===== */
.products-section {
  background: var(--color-bg-alt);
  position: relative;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header .section-desc {
  margin: 0 auto;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 36px 28px;
  transition: all 0.4s cubic-bezier(0.16,1,0.3,1);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,148,136,0.06), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}
.product-card:hover::before { opacity: 1; }
.product-card:hover {
  transform: translateY(-8px);
  border-color: rgba(13,148,136,0.4);
  box-shadow: 0 20px 50px rgba(0,0,0,0.3), 0 0 0 1px rgba(13,148,136,0.15);
}
.product-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(13,148,136,0.15), rgba(13,148,136,0.05));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
  color: var(--color-primary-light);
}
.product-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 10px;
}
.product-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-primary-light);
  font-weight: 500;
  transition: gap 0.3s;
}
.product-card:hover .product-link { gap: 10px; }

/* ===== 技术优势 ===== */
.advantages-section {
  background: var(--color-bg);
}
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.advantage-card {
  display: flex;
  gap: 20px;
  padding: 28px;
  border-left: 2px solid var(--color-border);
  transition: all 0.3s;
}
.advantage-card:hover { border-left-color: var(--color-primary); }
.advantage-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(13,148,136,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--color-primary-light);
}
.advantage-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 6px;
}
.advantage-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===== 合作伙伴 ===== */
.partners-section {
  background: var(--color-bg-alt);
  overflow: hidden;
}
.partner-scroll {
  display: flex;
  gap: 60px;
  animation: scrollLeft 20s linear infinite;
  padding: 20px 0;
}
.partner-scroll:hover { animation-play-state: paused; }
@keyframes scrollLeft {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.partner-item {
  flex-shrink: 0;
  opacity: 0.35;
  transition: all 0.3s;
  filter: grayscale(100%);
  font-size: 1.4rem;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text-dim);
  padding: 16px 28px;
}
.partner-item:hover {
  opacity: 1;
  filter: grayscale(0%);
  color: var(--color-white);
}

/* ===== CTA 区域 ===== */
.cta-section {
  background: linear-gradient(135deg, var(--color-bg), #0F1A1E);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(13,148,136,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-white);
  margin-bottom: 12px;
}
.footer-brand p {
  color: var(--color-text-dim);
  font-size: 0.9rem;
  line-height: 1.8;
}
.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 18px;
  letter-spacing: 0.05em;
}
.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--color-text-dim);
  margin-bottom: 10px;
  transition: color 0.25s;
}
.footer-col a:hover { color: var(--color-primary-light); }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--color-text-dim);
}

/* ===== 通用页面头部 ===== */
.page-header {
  padding: 160px 0 80px;
  text-align: center;
  background: var(--color-bg-alt);
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(13,148,136,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.page-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}
.page-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto;
}
.page-breadcrumb {
  display: flex;
  gap: 8px;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-bottom: 16px;
}
.page-breadcrumb a { color: var(--color-text-muted); }
.page-breadcrumb a:hover { color: var(--color-primary-light); }

/* ===== 产品页 Tabs ===== */
.product-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.product-tab {
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s;
}
.product-tab:hover { color: var(--color-text); border-color: var(--color-border); }
.product-tab.active {
  background: rgba(13,148,136,0.12);
  color: var(--color-primary-light);
  border-color: rgba(13,148,136,0.3);
}
.product-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.product-detail-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.3s;
}
.product-detail-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
  transform: translateY(-4px);
}
.product-detail-img {
  height: 200px;
  background: linear-gradient(135deg, rgba(13,148,136,0.1), rgba(13,148,136,0.02));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--color-primary-light);
}
.product-detail-body {
  padding: 24px;
}
.product-detail-body h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-white);
  margin-bottom: 8px;
}
.product-detail-body p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}
.product-specs {
  display: flex;
  gap: 20px;
  font-size: 0.8rem;
  color: var(--color-text-dim);
}
.product-specs span { color: var(--color-primary-light); }

/* ===== 关于页时间轴 ===== */
.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
  padding-left: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--color-border-light);
}
.timeline-item {
  position: relative;
  margin-bottom: 48px;
  padding-left: 30px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -31px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-bg);
}
.timeline-year {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: 6px;
}
.timeline-item h3 {
  font-size: 1.1rem;
  color: var(--color-white);
  margin-bottom: 6px;
}
.timeline-item p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===== 联系表单 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color 0.3s;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}
.contact-info-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 36px;
}
.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}
.contact-info-icon {
  width: 44px;
  height: 44px;
  background: rgba(13,148,136,0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--color-primary-light);
  flex-shrink: 0;
}
.contact-info-item h4 {
  font-size: 0.9rem;
  color: var(--color-white);
  margin-bottom: 4px;
}
.contact-info-item p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}
.map-placeholder {
  margin-top: 48px;
  height: 300px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  font-size: 0.9rem;
}

/* ===== 移动端菜单 ===== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(20,22,27,0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text-muted);
  transition: color 0.3s;
}
.mobile-menu a:hover,
.mobile-menu a.active { color: var(--color-primary-light); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: 1fr; max-width: 500px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .dino-silhouette { width: 60%; right: -15%; opacity: 0.03; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .navbar-links { display: none; }
  .hamburger { display: flex; }
  .products-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-card { padding: 20px 16px; }
  .stat-number { font-size: 2rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .hero h1 { font-size: clamp(1.8rem, 8vw, 3rem); }
  .hero-btns { flex-direction: column; }
  .btn { justify-content: center; }
  .page-header { padding: 120px 0 48px; }
  .product-detail-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .timeline { padding-left: 28px; }
  .timeline::before { left: 9px; }
  .timeline-item::before { left: -25px; width: 10px; height: 10px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .stats-grid { grid-template-columns: 1fr; }
  .partner-scroll { gap: 30px; }
}