/* ======================================================
   二区健康官网 — 自定义样式
   设计体系继承自 client-next (品牌蓝 #1677FF / Inter+PingFang SC)
   ====================================================== */

/* === 1. CSS 变量 — 设计 Token === */
:root {
  --color-primary: #1677FF;
  --color-primary-hover: #4096ff;
  --color-primary-light: rgba(22, 119, 255, 0.08);
  --color-primary-glow: rgba(22, 119, 255, 0.25);
  --color-bg: #FFFFFF;
  --color-bg-subtle: #F8FAFC;
  --color-bg-section: #F1F5F9;
  --color-text: #0F172A;
  --color-text-secondary: #475569;
  --color-text-muted: #94A3B8;
  --color-border: #E2E8F0;
  --color-card-bg: #FFFFFF;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --radius: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
  --shadow-glow: 0 0 20px rgba(22,119,255,0.2), 0 0 60px rgba(22,119,255,0.08);
  --transition-default: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === 2. 基础重置 === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', 'PingFang SC', system-ui, -apple-system, sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  letter-spacing: -0.02em;
  font-weight: 700;
}

a { text-decoration: none; color: inherit; transition: var(--transition-default); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

::selection {
  background-color: rgba(22, 119, 255, 0.15);
  color: inherit;
}

/* === 3. 布局容器 === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 100px 0;
}

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

/* === 4. 导航栏 === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 2rem;
  height: 72px;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: var(--transition-default);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-text);
}

.navbar-brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.navbar-links a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width 0.3s ease;
}

.navbar-links a:hover { color: var(--color-primary); }
.navbar-links a:hover::after { width: 100%; }

.navbar-cta {
  padding: 8px 20px;
  border-radius: var(--radius);
  background: var(--color-primary);
  color: #fff !important;
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition-default);
}

.navbar-cta:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.navbar-cta::after { display: none !important; }

/* 移动端汉堡 */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  border-radius: 2px;
  transition: var(--transition-default);
}

/* === 5. Hero 英雄区 === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(160deg, #f0f7ff 0%, #ffffff 40%, #f8fbff 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(22,119,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22,119,255,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, transparent 80%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, transparent 80%);
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22,119,255,0.12) 0%, transparent 70%);
  top: -100px;
  right: -150px;
  animation: float 8s ease-in-out infinite;
}

.hero-glow-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22,119,255,0.08) 0%, transparent 70%);
  bottom: -80px;
  left: -100px;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--color-primary-light);
  border: 1px solid rgba(22,119,255,0.15);
  border-radius: 100px;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.hero-badge svg { width: 16px; height: 16px; }

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, var(--color-text) 0%, #334155 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 2.5rem;
  max-width: 560px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition-default);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(22,119,255,0.3);
}

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

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

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

/* Hero 右侧视觉 */
.hero-visual {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-mockup {
  width: 520px;
  height: 380px;
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
  position: relative;
}

.hero-mockup-header {
  height: 40px;
  background: var(--color-bg-section);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 6px;
}

.hero-mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #E2E8F0;
}

.hero-mockup-dot:nth-child(1) { background: #FCA5A5; }
.hero-mockup-dot:nth-child(2) { background: #FDE68A; }
.hero-mockup-dot:nth-child(3) { background: #86EFAC; }

.hero-mockup-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mockup-chat-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.mockup-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
}

.mockup-avatar.ai {
  background: linear-gradient(135deg, var(--color-primary), #3b82f6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
}

.mockup-avatar.user {
  background: #E2E8F0;
}

.mockup-bubble {
  max-width: 320px;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 0.8rem;
  line-height: 1.6;
  animation: fadeSlideUp 0.6s ease forwards;
  opacity: 0;
}

.mockup-bubble.ai-bubble {
  background: var(--color-bg-section);
  color: var(--color-text);
  border-bottom-left-radius: 4px;
}

.mockup-bubble.user-bubble {
  background: var(--color-primary);
  color: #fff;
  border-bottom-right-radius: 4px;
  margin-left: auto;
}

.mockup-bubble:nth-child(1) { animation-delay: 0.3s; }
.mockup-bubble:nth-child(2) { animation-delay: 0.9s; }
.mockup-bubble:nth-child(3) { animation-delay: 1.5s; }

.mockup-typing {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
  animation: fadeSlideUp 0.6s ease forwards;
  animation-delay: 2.1s;
  opacity: 0;
}

.mockup-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-muted);
  animation: typingDot 1.4s ease-in-out infinite;
}

.mockup-typing span:nth-child(2) { animation-delay: 0.2s; }
.mockup-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingDot {
  0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
  40% { opacity: 1; transform: scale(1); }
}

/* === 6. 板块通用 === */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* === 7. 三支柱卡片 === */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pillar-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: var(--transition-default);
  position: relative;
  overflow: hidden;
}

.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), #3b82f6);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.pillar-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(22,119,255,0.2);
}

.pillar-card:hover::before { opacity: 1; }

.pillar-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  border-radius: var(--radius);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.pillar-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

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

/* === 8. 核心优势 === */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.advantage-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  gap: 1.25rem;
  transition: var(--transition-default);
}

.advantage-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(22,119,255,0.15);
  transform: translateY(-2px);
}

.advantage-num {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary), #3b82f6);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  flex-shrink: 0;
}

.advantage-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.advantage-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === 9. 解决方案 Tab === */
.solutions-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 28px;
  border-radius: 100px;
  border: 1.5px solid var(--color-border);
  background: var(--color-card-bg);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-default);
}

.tab-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.tab-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(22,119,255,0.3);
}

.tab-panel {
  display: none;
  animation: fadeSlideUp 0.5s ease;
}

.tab-panel.active { display: block; }

.solution-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.solution-text h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.solution-text .pain-point {
  padding: 1rem 1.25rem;
  background: #FEF3C7;
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  border-left: 3px solid var(--color-warning);
  color: #92400E;
}

.solution-text .solution-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.solution-benefits {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.benefit-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 100px;
  background: #ECFDF5;
  color: #065F46;
  font-size: 0.825rem;
  font-weight: 500;
}

.benefit-tag svg { width: 14px; height: 14px; color: var(--color-success); }

.solution-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.solution-card-visual {
  width: 100%;
  max-width: 460px;
  aspect-ratio: 4/3;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #f0f7ff, #e8f4fd);
  border: 1px solid rgba(22,119,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.solution-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* === 10. 认证区 === */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.cert-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  transition: var(--transition-default);
}

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

.cert-badge {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.cert-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.cert-card .cert-full {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.cert-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === 11. 数据统计横幅 === */
.stats-banner {
  background: linear-gradient(135deg, var(--color-primary), #2563eb);
  padding: 60px 0;
  color: #fff;
}

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

.stat-item .stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  display: block;
  margin-bottom: 0.25rem;
}

.stat-item .stat-label {
  font-size: 0.9rem;
  opacity: 0.85;
}

/* === 12. 口碑轮播 === */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.testimonial-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition-default);
  position: relative;
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.testimonial-quote {
  font-size: 2rem;
  color: var(--color-primary);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 0.75rem;
}

.testimonial-card blockquote {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #E0E7FF, #C7D2FE);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: #4338CA;
}

.testimonial-author .name {
  font-weight: 600;
  font-size: 0.9rem;
}

.testimonial-author .role {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* === 13. 合作流程 === */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), #3b82f6, var(--color-primary));
  opacity: 0.2;
  z-index: 0;
}

.step-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-num {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-card-bg);
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 auto 1rem;
  transition: var(--transition-default);
}

.step-item:hover .step-num {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.step-item h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.step-item p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  max-width: 200px;
  margin: 0 auto;
}

/* 合作 CTA */
.partnership-cta {
  text-align: center;
  padding: 3rem;
  background: linear-gradient(135deg, #f0f7ff, #e8f4fd);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(22,119,255,0.1);
}

.partnership-cta h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.partnership-cta p {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

/* === 14. 页脚 === */
.footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer h4 {
  color: #F1F5F9;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.footer ul li { margin-bottom: 0.6rem; }

.footer ul a {
  font-size: 0.85rem;
  color: #94A3B8;
}

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

.footer-bottom {
  border-top: 1px solid #1E293B;
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

/* === 15. 滚动动画 === */
@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }

/* === 16. 响应式 === */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.5rem; }
  .hero-mockup { width: 420px; height: 320px; }
  .pillars-grid { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
  .advantages-grid { grid-template-columns: 1fr; }
  .solution-content { grid-template-columns: 1fr; }
  .solution-visual { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .container { padding: 0 1.25rem; }

  .navbar-links { display: none; }
  .mobile-toggle { display: block; }

  .navbar-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--color-border);
    gap: 1rem;
    box-shadow: var(--shadow-lg);
  }

  .hero {
    min-height: auto;
    padding: 120px 0 60px;
  }

  .hero .container {
    flex-direction: column;
  }

  .hero h1 { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero-mockup { width: 100%; height: 280px; }

  .section-title { font-size: 1.75rem; }

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

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
  .stat-item .stat-number { font-size: 2rem; }

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

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
  .steps-grid::before { display: none; }

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

  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.7rem; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .steps-grid { grid-template-columns: 1fr; }
  .tab-btn { padding: 8px 18px; font-size: 0.825rem; }
}