/* ========================================
   云客CRM产品官网 - 全局样式
   科技简约风格 | 蓝色+浅灰色主色调
   ======================================== */

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

/* ---- CSS Variables ---- */
:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --primary-light: #4a9af5;
  --primary-gradient: linear-gradient(135deg, #1a73e8 0%, #4a9af5 100%);
  --accent: #0d47a1;
  --bg-white: #ffffff;
  --bg-light: #f5f7fa;
  --bg-section: #eef2f7;
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-light: #718096;
  --text-white: #ffffff;
  --border-color: #e2e8f0;
  --shadow-sm: 0 2px 8px rgba(26, 115, 232, 0.08);
  --shadow-md: 0 4px 20px rgba(26, 115, 232, 0.12);
  --shadow-lg: 0 8px 40px rgba(26, 115, 232, 0.16);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--primary-dark);
}

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Navigation ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--primary);
  background: rgba(26, 115, 232, 0.06);
}

.nav-links a.active {
  color: var(--primary);
  background: rgba(26, 115, 232, 0.1);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  border: none;
  background: none;
  z-index: 1001;
}

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

.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);
}

/* ---- Hero / Banner ---- */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 60px) 24px 80px;
  background: linear-gradient(135deg, #0d1b3e 0%, #1a3a6e 40%, #1a73e8 100%);
  overflow: hidden;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('../images/banner-bg.png') center/cover no-repeat;
  opacity: 0.3;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background: linear-gradient(to top, var(--bg-white), transparent);
  z-index: 1;
}

/* Animated particles */
.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
}

.hero-particles .particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  animation: float-particle 6s infinite ease-in-out;
}

.hero-particles .particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; animation-duration: 8s; }
.hero-particles .particle:nth-child(2) { left: 25%; top: 60%; animation-delay: 1s; animation-duration: 6s; }
.hero-particles .particle:nth-child(3) { left: 45%; top: 30%; animation-delay: 2s; animation-duration: 7s; }
.hero-particles .particle:nth-child(4) { left: 65%; top: 70%; animation-delay: 0.5s; animation-duration: 9s; }
.hero-particles .particle:nth-child(5) { left: 80%; top: 40%; animation-delay: 1.5s; animation-duration: 5s; }
.hero-particles .particle:nth-child(6) { left: 90%; top: 15%; animation-delay: 3s; animation-duration: 7s; }

@keyframes float-particle {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.3; }
  50% { transform: translateY(-30px) scale(1.5); opacity: 0.8; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 30px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  font-size: 42px;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.hero h1 span {
  background: linear-gradient(135deg, #60a5fa, #93c5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--text-white);
  color: var(--primary);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
  color: var(--primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--text-white);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
  color: var(--text-white);
  transform: translateY(-2px);
}

.btn-blue {
  background: var(--primary-gradient);
  color: var(--text-white);
  box-shadow: 0 4px 15px rgba(26, 115, 232, 0.3);
}

.btn-blue:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(26, 115, 232, 0.4);
  color: var(--text-white);
}

/* ---- Section Styles ---- */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-light);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header .section-label {
  display: inline-block;
  padding: 4px 16px;
  background: rgba(26, 115, 232, 0.08);
  color: var(--primary);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-header p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---- Page Hero (Sub Pages) ---- */
.page-hero {
  padding: calc(var(--nav-height) + 50px) 0 50px;
  background: linear-gradient(135deg, #0d1b3e 0%, #1a3a6e 40%, #1a73e8 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(74, 154, 245, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(26, 115, 232, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.page-hero h1 {
  font-size: 34px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.page-hero p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  position: relative;
  z-index: 1;
}

/* ---- Feature Cards ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card .card-icon {
  width: 56px;
  height: 56px;
  background: rgba(26, 115, 232, 0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 28px;
  transition: var(--transition);
}

.feature-card:hover .card-icon {
  background: var(--primary-gradient);
  transform: scale(1.05);
}

.feature-card:hover .card-icon svg {
  filter: brightness(0) invert(1);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---- Highlight Cards (Home) ---- */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.highlight-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(26, 115, 232, 0.2);
}

.highlight-card .hl-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  background: rgba(26, 115, 232, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  transition: var(--transition);
}

.highlight-card:hover .hl-icon {
  background: var(--primary-gradient);
  transform: scale(1.1);
}

.highlight-card:hover .hl-icon svg {
  filter: brightness(0) invert(1);
}

.highlight-card h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.highlight-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---- Industry Cards ---- */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.industry-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.industry-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

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

.industry-card:hover::after {
  transform: scaleX(1);
}

.industry-card .ind-icon {
  width: 60px;
  height: 60px;
  background: rgba(26, 115, 232, 0.06);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  margin-bottom: 20px;
  transition: var(--transition);
}

.industry-card:hover .ind-icon {
  background: var(--primary-gradient);
}

.industry-card:hover .ind-icon svg {
  filter: brightness(0) invert(1);
}

.industry-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.industry-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---- Contact Info Cards ---- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.contact-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.contact-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.contact-card .contact-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: rgba(26, 115, 232, 0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.contact-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.contact-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---- Consultation Section ---- */
.consult-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.consult-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.consult-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.consult-card .consult-icon {
  width: 52px;
  height: 52px;
  background: rgba(26, 115, 232, 0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
}

.consult-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.consult-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---- Tip Box ---- */
.tip-box {
  background: rgba(26, 115, 232, 0.04);
  border: 1px solid rgba(26, 115, 232, 0.15);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  margin-top: 40px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.tip-box .tip-icon {
  flex-shrink: 0;
  font-size: 24px;
  color: var(--primary);
}

.tip-box h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}

.tip-box p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---- CTA Section ---- */
.cta-section {
  background: linear-gradient(135deg, #0d1b3e 0%, #1a3a6e 50%, #1a73e8 100%);
  padding: 64px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(74, 154, 245, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.cta-section .cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ---- Product Positioning ---- */
.positioning-text {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 2;
  padding: 0 20px;
}

/* ---- Footer ---- */
.footer {
  background: #0d1b2e;
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 0;
}

.footer-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 360px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--primary-gradient);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 15px;
}

.footer-brand .footer-logo span {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-white);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
}

.footer-links {
  display: flex;
  gap: 60px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  padding: 4px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: var(--primary-light);
}

.footer-bottom .footer-divider {
  margin: 0 8px;
}

/* ---- Scroll Animations ---- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Stagger children */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0.05s; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 0.1s; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 0.15s; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 0.2s; }
.stagger-children .fade-in:nth-child(5) { transition-delay: 0.25s; }

/* ---- About Description ---- */
.about-desc {
  max-width: 900px;
  margin: 0 auto 48px;
  text-align: center;
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 2;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 34px;
  }

  .section {
    padding: 60px 0;
  }

  .section-header h2 {
    font-size: 28px;
  }
}

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

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-white);
    flex-direction: column;
    padding: 100px 32px 40px;
    gap: 4px;
    box-shadow: -4px 0 30px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    align-items: stretch;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 16px;
  }

  .hero {
    min-height: 420px;
    padding: calc(var(--nav-height) + 40px) 20px 60px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero p {
    font-size: 16px;
  }

  .page-hero h1 {
    font-size: 26px;
  }

  .section {
    padding: 48px 0;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .section-header h2 {
    font-size: 24px;
  }

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

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

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

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

  .consult-methods {
    grid-template-columns: 1fr;
  }

  .footer-main {
    flex-direction: column;
    gap: 30px;
  }

  .footer-links {
    gap: 40px;
  }

  .cta-section h2 {
    font-size: 24px;
  }
}

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

  .hero h1 {
    font-size: 24px;
  }

  .btn {
    padding: 12px 24px;
    font-size: 15px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* ---- Mobile overlay ---- */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 999;
}

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