/* ========================================
   Tech Corp Website
   Shared Stylesheet
   ======================================== */

/* ===== CSS Variables ===== */
:root {
  --color-primary: #0A1B3D;
  --color-primary-light: #162B5C;
  --color-blue: #1B56F5;
  --color-blue-light: #3B7BFF;
  --color-cyan: #00B8D9;
  --color-cyan-light: #2DD4E8;
  --color-bg: #F5F7FB;
  --color-white: #FFFFFF;
  --color-text: #0F172A;
  --color-text-secondary: #475569;
  --color-text-light: #64748B;
  --color-border: #E2E8F0;
  --color-border-light: #EEF2F7;

  --gradient-primary: linear-gradient(135deg, #0A1B3D 0%, #162B5C 50%, #1B3A6B 100%);
  --gradient-blue: linear-gradient(135deg, #1B56F5 0%, #00B8D9 100%);
  --gradient-accent: linear-gradient(135deg, #3B7BFF 0%, #00B8D9 100%);
  --gradient-hero: linear-gradient(160deg, #0A1B3D 0%, #0E2552 40%, #0A1B3D 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #F8FAFF 100%);

  --shadow-sm: 0 1px 3px rgba(10, 27, 61, 0.06);
  --shadow-md: 0 4px 20px rgba(10, 27, 61, 0.08);
  --shadow-lg: 0 12px 40px rgba(10, 27, 61, 0.12);
  --shadow-xl: 0 20px 60px rgba(10, 27, 61, 0.15);
  --shadow-blue: 0 8px 30px rgba(27, 86, 245, 0.25);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);

  --container-width: 1200px;
  --nav-height: 72px;
}

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

/* ===== Skip Link (Accessibility) ===== */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  z-index: 9999;
  padding: 12px 24px;
  background: var(--color-blue);
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 0 0 8px 0;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

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

/* ===== Focus Visible (Accessibility) ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
  border-radius: 4px;
}

.nav-links a:focus-visible {
  outline-offset: -2px;
}

ul, ol {
  list-style: none;
}

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

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

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.section-subtitle {
  font-size: 1.1rem;
  text-align: center;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto 3.5rem;
  line-height: 1.8;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-blue);
  background: rgba(27, 86, 245, 0.08);
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 1.2rem;
}

.text-gradient {
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== Container ===== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 1000;
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: var(--container-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-primary);
}

.nav-logo .logo-img {
  height: 36px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 18px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 8px;
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-blue);
  background: rgba(27, 86, 245, 0.06);
}

.nav-links a.active {
  color: var(--color-blue);
  font-weight: 600;
}

.nav-cta {
  padding: 10px 24px !important;
  background: var(--gradient-blue);
  color: white !important;
  border-radius: 100px;
  font-weight: 600;
  box-shadow: var(--shadow-blue);
}

.nav-cta:hover {
  background: var(--gradient-blue);
  transform: translateY(-1px);
  box-shadow: 0 10px 35px rgba(27, 86, 245, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

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

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-blue);
  color: white;
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(27, 86, 245, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-blue);
  color: var(--color-blue);
  transform: translateY(-2px);
}

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

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-ghost-light {
  background: rgba(255, 255, 255, 0.12);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
}

.btn-ghost-light:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}

.section-sm {
  padding: 64px 0;
}

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

.bg-gradient-dark {
  background: var(--gradient-primary);
  color: white;
}

/* ===== Hero (Home) ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  color: white;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(27, 86, 245, 0.2) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(0, 184, 217, 0.15) 0%, transparent 40%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: floatOrb 8s ease-in-out infinite;
}

.hero-orb-1 {
  width: 400px;
  height: 400px;
  background: #1B56F5;
  top: -100px;
  right: 5%;
}

.hero-orb-2 {
  width: 300px;
  height: 300px;
  background: #00B8D9;
  bottom: -50px;
  left: 10%;
  animation-delay: -3s;
}

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

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00D9A0;
  box-shadow: 0 0 12px #00D9A0;
}

.hero h1 {
  font-size: 3.6rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #5B9DFF 0%, #00D4E8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.2rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #5B9DFF 0%, #00D4E8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-stat-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

/* ===== Page Hero (Inner Pages) ===== */
.page-hero {
  position: relative;
  background: var(--gradient-hero);
  color: white;
  padding: calc(var(--nav-height) + 80px) 0 80px;
  overflow: hidden;
}

.page-hero .hero-bg-pattern,
.page-hero .hero-grid {
  position: absolute;
  inset: 0;
}

.page-hero .hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
}

.page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.page-hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.page-hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
}

.breadcrumb a:hover {
  color: white;
}

/* ===== Feature Cards ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

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

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

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(27, 86, 245, 0.1), rgba(0, 184, 217, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--color-blue);
  transition: var(--transition);
}

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

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ===== Tech Stack Section ===== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tech-card {
  position: relative;
  background: var(--gradient-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  transition: var(--transition);
  overflow: hidden;
}

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

.tech-card-num {
  position: absolute;
  top: 28px;
  right: 32px;
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-border);
  line-height: 1;
  transition: var(--transition);
}

.tech-card:hover .tech-card-num {
  color: rgba(27, 86, 245, 0.12);
}

.tech-card .feature-icon {
  margin-bottom: 28px;
}

.tech-card h3 {
  font-size: 1.4rem;
  margin-bottom: 14px;
  color: var(--color-primary);
}

.tech-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  font-size: 0.8rem;
  padding: 5px 14px;
  background: rgba(27, 86, 245, 0.07);
  color: var(--color-blue);
  border-radius: 100px;
  font-weight: 500;
}

/* ===== Industry Cards ===== */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.industry-card {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 48px 44px;
  overflow: hidden;
  transition: var(--transition);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.industry-card.gov {
  background: linear-gradient(135deg, #0A1B3D 0%, #1B3A6B 100%);
  color: white;
}

.industry-card.agri {
  background: linear-gradient(135deg, #0A4D3C 0%, #0A1B3D 100%);
  color: white;
}

.industry-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.industry-card .bg-icon {
  position: absolute;
  right: -20px;
  bottom: -20px;
  font-size: 10rem;
  opacity: 0.08;
  line-height: 1;
}

.industry-card .tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 100px;
  margin-bottom: 16px;
  width: fit-content;
}

.industry-card h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.industry-card p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 24px;
}

.industry-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.industry-features li {
  font-size: 0.85rem;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 100px;
  color: rgba(255, 255, 255, 0.9);
}

/* ===== Stats Bar ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 20px;
}

.stat-num {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.stat-num .suffix {
  font-size: 1.6rem;
  font-weight: 700;
}

.stat-label {
  margin-top: 12px;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

/* ===== AI Assistant Card ===== */
.ai-assistant-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: linear-gradient(135deg, #F0F7FF 0%, #E8F4FD 50%, #F5F0FF 100%);
  border: 1px solid rgba(27, 86, 245, 0.12);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  transition: var(--transition);
}

.ai-assistant-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(27, 86, 245, 0.25);
  transform: translateY(-2px);
}

.ai-assistant-content {
  display: flex;
  align-items: center;
  gap: 24px;
  flex: 1;
}

.ai-assistant-icon {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-blue);
  border-radius: 18px;
  color: white;
  box-shadow: var(--shadow-blue);
}

.ai-assistant-text h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.ai-assistant-text p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== Agent Collaboration Section ===== */
.agent-collab-section {
  position: relative;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  padding: 64px 56px;
  overflow: hidden;
  margin: 0 24px;
}

.agent-collab-section .ac-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.25;
}

.agent-collab-section .ac-orb-1 {
  width: 320px;
  height: 320px;
  background: #1B56F5;
  top: -80px;
  right: -40px;
}

.agent-collab-section .ac-orb-2 {
  width: 260px;
  height: 260px;
  background: #00B8D9;
  bottom: -60px;
  left: -30px;
}

.agent-collab-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.agent-collab-text h2 {
  font-size: 2rem;
  color: white;
  margin-bottom: 1rem;
}

.agent-collab-text > p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.9;
  margin-bottom: 2rem;
}

.agent-collab-features {
  display: grid;
  gap: 16px;
}

.agent-collab-feature {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.agent-collab-feature .acf-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.9);
}

.agent-collab-feature .acf-text h5 {
  font-size: 1rem;
  color: white;
  margin-bottom: 4px;
}

.agent-collab-feature .acf-text p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.agent-collab-visual {
  position: relative;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 40px;
  backdrop-filter: blur(10px);
}

.agent-collab-visual .acv-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.agent-collab-visual .acv-layer {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.agent-collab-visual .acv-layer:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateX(4px);
}

.agent-collab-visual .acv-layer-name {
  font-size: 0.9rem;
  color: white;
  font-weight: 500;
}

.agent-collab-visual .acv-layer-tag {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 100px;
}

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  padding: 72px 60px;
  text-align: center;
  overflow: hidden;
  margin: 0 24px;
}

.cta-section .cta-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.3;
}

.cta-section .cta-orb-1 {
  width: 300px;
  height: 300px;
  background: #1B56F5;
  top: -80px;
  left: -50px;
}

.cta-section .cta-orb-2 {
  width: 250px;
  height: 250px;
  background: #00B8D9;
  bottom: -80px;
  right: -30px;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta-content h2 {
  font-size: 2.2rem;
  color: white;
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 2rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== About Page ===== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-intro-text h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

.about-intro-text p {
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: 1.2rem;
}

.about-intro-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 420px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-intro-visual .visual-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 40%, rgba(27, 86, 245, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(0, 184, 217, 0.2) 0%, transparent 50%);
}

.about-intro-visual .visual-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  padding: 40px;
}

.about-intro-visual .visual-content .big-text {
  font-size: 5rem;
  font-weight: 900;
  background: linear-gradient(135deg, #5B9DFF, #00D4E8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 16px;
}

.about-intro-visual .visual-content p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
}

/* Vision & Mission */
.vm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.vm-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

.vm-card .vm-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: var(--gradient-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: 24px;
  box-shadow: var(--shadow-blue);
}

.vm-card h3 {
  font-size: 1.5rem;
  margin-bottom: 14px;
  color: var(--color-primary);
}

.vm-card p {
  color: var(--color-text-light);
  line-height: 1.9;
  font-size: 1rem;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 48px 48px 0;
}

.timeline-item:nth-child(even) {
  margin-left: 50%;
  padding: 0 0 48px 48px;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -8px;
}

.timeline-dot {
  position: absolute;
  right: -8px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gradient-blue);
  border: 3px solid white;
  box-shadow: 0 0 0 4px rgba(27, 86, 245, 0.15);
  z-index: 2;
}

.timeline-content {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  transition: var(--transition);
}

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

.timeline-year {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-blue);
  margin-bottom: 8px;
}

.timeline-content h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Values Grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  text-align: center;
  padding: 36px 24px;
  border-radius: var(--radius-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
}

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

.value-card .value-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(27, 86, 245, 0.08), rgba(0, 184, 217, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
  transition: var(--transition);
}

.value-card:hover .value-icon {
  background: var(--gradient-blue);
  color: white;
}

.value-card h4 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--color-primary);
}

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

/* ===== Products Page ===== */
.product-category {
  margin-bottom: 64px;
}

.product-category-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 36px;
}

.product-category-header .cat-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--gradient-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
  box-shadow: var(--shadow-blue);
}

.product-category-header h3 {
  font-size: 1.6rem;
  color: var(--color-primary);
}

.product-category-header .cat-desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

.product-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-item {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition);
  position: relative;
}

.product-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(27, 86, 245, 0.2);
}

.product-item .pi-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(27, 86, 245, 0.08), rgba(0, 184, 217, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
  margin-bottom: 20px;
  transition: var(--transition);
}

.product-item:hover .pi-icon {
  background: var(--gradient-blue);
  color: white;
}

.product-item h4 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.product-item p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.product-item .pi-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.product-item .pi-tag {
  font-size: 0.78rem;
  padding: 4px 12px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  border-radius: 100px;
}

/* Service Process */
.process-flow {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  position: relative;
}

.process-flow::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-cyan));
  opacity: 0.2;
}

.process-step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 2;
}

.process-step .step-num {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-blue);
  transition: var(--transition);
  position: relative;
}

.process-step:hover .step-num {
  background: var(--gradient-blue);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-blue);
  transform: scale(1.05);
}

.process-step h4 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.process-step p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
  padding: 0 8px;
}

/* ===== Contact Page ===== */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info-card {
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  color: white;
  position: relative;
  overflow: hidden;
}

.contact-info-card .ci-orb {
  position: absolute;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: #1B56F5;
  filter: blur(80px);
  opacity: 0.3;
  top: -60px;
  right: -60px;
}

.contact-info-card h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
}

.contact-info-card > p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
  position: relative;
  z-index: 2;
  line-height: 1.8;
}

.contact-info-list {
  position: relative;
  z-index: 2;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-info-item .ci-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.9);
  flex-shrink: 0;
}

.contact-info-item .ci-label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 4px;
}

.contact-info-item .ci-value {
  font-size: 1rem;
  color: white;
  font-weight: 500;
}

.contact-form-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  box-shadow: var(--shadow-md);
}

.contact-form-card h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.contact-form-card > p {
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 18px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  background: white;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 4px rgba(27, 86, 245, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
}

.form-submit {
  width: 100%;
  justify-content: center;
}

.form-success {
  display: none;
  padding: 16px 20px;
  background: rgba(0, 184, 128, 0.08);
  border: 1px solid rgba(0, 184, 128, 0.2);
  border-radius: var(--radius-sm);
  color: #00875A;
  font-size: 0.92rem;
  margin-bottom: 20px;
  align-items: center;
  gap: 8px;
}

.form-success.show {
  display: flex;
}

.form-error-general {
  display: none;
  padding: 16px 20px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-sm);
  color: #DC2626;
  font-size: 0.92rem;
  margin-bottom: 20px;
  align-items: center;
  gap: 8px;
}

.form-error-general.show {
  display: flex;
}

.loading-spinner-inline {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spinInline 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

@keyframes spinInline {
  to { transform: rotate(360deg); }
}

/* ===== Footer ===== */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.6);
  padding: 72px 0 32px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .nav-logo {
  color: white;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h5 {
  color: white;
  font-size: 1rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.55);
  transition: var(--transition-fast);
}

.footer-col ul li a:hover {
  color: white;
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition-fast);
}

.footer-social a:hover {
  background: var(--gradient-blue);
  color: white;
  transform: translateY(-2px);
}

/* ===== Animations ===== */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .fade-up {
    opacity: 1;
    transform: none;
  }
  .hero-orb { animation: none; }
}

/* ===== Honeypot (Anti-spam) ===== */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

/* ===== Form Error States ===== */
.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: #EF4444;
  background: rgba(239, 68, 68, 0.04);
}

.form-error-msg {
  display: none;
  font-size: 0.82rem;
  color: #EF4444;
  margin-top: 6px;
}

.form-error-msg.show {
  display: block;
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ===== Tech Evolution (About Page) ===== */
.evolution-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.evolution-track::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-cyan));
  opacity: 0.2;
}

.evolution-step {
  text-align: center;
  position: relative;
  z-index: 2;
}

.evolution-step .evo-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
  transition: var(--transition);
}

.evolution-step:hover .evo-icon {
  background: var(--gradient-blue);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-blue);
  transform: scale(1.05);
}

.evolution-step .evo-year {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-cyan);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.evolution-step h4 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.evolution-step p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
  padding: 0 12px;
}

/* ===== Compliance / 信创 Section ===== */
.compliance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.compliance-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.compliance-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(27, 86, 245, 0.2);
}

.compliance-card .comp-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(27, 86, 245, 0.08), rgba(0, 184, 217, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
  transition: var(--transition);
}

.compliance-card:hover .comp-icon {
  background: var(--gradient-blue);
  color: white;
}

.compliance-card h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.compliance-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== Industry Model Zone (首页 行业大模型专区) ===== */
.model-zone-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.model-zone-card {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 44px 38px;
  overflow: hidden;
  transition: var(--transition);
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.model-zone-card.gov-model {
  background: linear-gradient(135deg, #0A1B3D 0%, #1B3A6B 100%);
  color: white;
}

.model-zone-card.agri-model {
  background: linear-gradient(135deg, #0A4D3C 0%, #0A1B3D 100%);
  color: white;
}

.model-zone-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.model-zone-card .mz-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 100px;
  margin-bottom: 16px;
  width: fit-content;
}

.model-zone-card h3 {
  font-size: 1.6rem;
  margin-bottom: 14px;
}

.model-zone-card > p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 20px;
}

.model-zone-card .mz-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.model-zone-card .mz-features li {
  font-size: 0.82rem;
  padding: 5px 14px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 100px;
  color: rgba(255, 255, 255, 0.9);
}

/* ===== Application Scenarios / 客户价值 ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.scenario-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

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

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

.scenario-card .sc-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-cyan);
  background: rgba(0, 184, 217, 0.08);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.scenario-card h4 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.scenario-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.scenario-card .sc-metric {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-light);
}

.scenario-card .sc-metric-num {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.scenario-card .sc-metric-label {
  font-size: 0.82rem;
  color: var(--color-text-light);
}


/* ===== Responsive ===== */
@media (max-width: 968px) {
  .hero h1 { font-size: 2.6rem; }
  .section-title { font-size: 2rem; }

  .feature-grid,
  .tech-grid,
  .product-list,
  .values-grid,
  .scenario-grid,
  .compliance-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .about-intro,
  .vm-grid,
  .contact-wrapper,
  .industry-grid,
  .model-zone-grid,
  .agent-collab-content {
    grid-template-columns: 1fr;
  }

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

  .process-flow,
  .evolution-track {
    flex-direction: column;
    gap: 32px;
  }

  .process-flow::before,
  .evolution-track::before {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: 14px 18px;
  }

  .nav-toggle {
    display: flex;
  }

  .hero { min-height: auto; padding-bottom: 80px; }
  .hero h1 { font-size: 2.2rem; }
  .hero-desc { font-size: 1.05rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat-num { font-size: 1.8rem; }

  .section { padding: 64px 0; }
  .section-title { font-size: 1.7rem; }
  .page-hero h1 { font-size: 2rem; }
  .page-hero { padding-top: calc(var(--nav-height) + 60px); padding-bottom: 60px; }

  .feature-grid,
  .tech-grid,
  .product-list,
  .values-grid,
  .scenario-grid,
  .compliance-grid {
    grid-template-columns: 1fr;
  }

  .stats-bar { grid-template-columns: 1fr 1fr; }

  .form-row { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }

  .cta-section { padding: 48px 28px; margin: 0 16px; }
  .cta-content h2 { font-size: 1.6rem; }

  .ai-assistant-card { flex-direction: column; padding: 32px 24px; text-align: center; }
  .ai-assistant-content { flex-direction: column; text-align: center; }

  .agent-collab-section { padding: 40px 24px; margin: 0 12px; }
  .agent-collab-text h2 { font-size: 1.5rem; }
  .agent-collab-visual { padding: 24px; }

  .contact-info-card,
  .contact-form-card { padding: 32px 24px; }

  .timeline::before { left: 0; }
  .timeline-item,
  .timeline-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    padding: 0 0 40px 40px;
  }
  .timeline-item:nth-child(even) .timeline-dot,
  .timeline-dot { left: -8px; right: auto; }
}