/* ============================================
   飞立昌 · 答案增长引擎 - 主样式表
   Feilichang AGE - Main Stylesheet
   ============================================ */

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

:root {
  /* Brand Colors */
  --color-primary: #0B1F3A;
  --color-primary-light: #1e3a5f;
  --color-accent: #2563EB;
  --color-accent-light: #3b82f6;
  --color-cyan: #06B6D4;
  --color-cyan-light: #22d3ee;
  --color-teal: #14b8a6;

  /* Neutral Colors */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-bg-dark: #0B1F3A;
  --color-text: #0F172A;
  --color-text-muted: #64748B;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-dark: #1e3a5f;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0B1F3A 0%, #1e3a5f 50%, #2563EB 100%);
  --gradient-accent: linear-gradient(135deg, #2563EB 0%, #06B6D4 100%);
  --gradient-card: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  --shadow-xl: 0 24px 48px rgba(0,0,0,0.16);

  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --container-max: 1200px;
  --header-height: 72px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--color-cyan);
}

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

ul, ol {
  list-style: none;
}

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

.header .container,
.hero .container {
  max-width: 1280px;
}

/* ===== Section ===== */
.section {
  padding: var(--space-xl) 0;
}

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

.section--dark {
  background: var(--color-bg-dark);
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-lg);
}

.section-header .eyebrow {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  padding: 6px 16px;
  background: rgba(37, 99, 235, 0.08);
  border-radius: var(--radius-full);
}

.section--dark .section-header .eyebrow {
  background: rgba(37, 99, 235, 0.2);
  color: var(--color-cyan-light);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.section--dark .section-title {
  color: #fff;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.section--dark .section-subtitle {
  color: rgba(255,255,255,0.7);
}

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

.btn--primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
  color: #fff;
}

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

.btn--outline:hover {
  background: var(--color-accent);
  color: #fff;
}

.btn--light {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 2px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(10px);
}

.btn--light:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}

.btn--lg {
  padding: 16px 40px;
  font-size: 1.0625rem;
}

/* ===== Header / Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: var(--transition);
}

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

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  text-decoration: none;
}

.logo:hover {
  color: var(--color-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.125rem;
  font-weight: 700;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text .logo-name {
  font-size: 1.0625rem;
}

.logo-text .logo-sub {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

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

.nav a {
  padding: 8px 18px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav a:hover {
  color: var(--color-accent);
  background: rgba(37, 99, 235, 0.06);
}

.nav a.active {
  color: var(--color-accent);
  background: rgba(37, 99, 235, 0.1);
}

.nav-cta {
  margin-left: 12px;
}

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

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

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

/* ===== Hero Section (Light Style - 鹿聚GEO Inspired) ===== */
.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 60px) 0 80px;
  background: linear-gradient(135deg, #ffffff 0%, #F0F7FF 50%, #F8FAFC 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -80px;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  grid-template-areas:
    "content image"
    "diagnosis diagnosis";
  gap: 32px 40px;
  align-items: start;
}

.hero-content {
  grid-area: content;
  max-width: none;
  padding-top: 10px;
}

.hero-image {
  grid-area: image;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-width: 440px;
  margin: 0 0 0 auto;
}

.hero-image svg {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(37, 99, 235, 0.12));
}

.aivo-diagnosis {
  grid-area: diagnosis;
  background: #FFFFFF;
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(11, 31, 58, 0.08);
  max-width: none;
  width: 100%;
}

/* hero-actions-row: 按钮 + 统计数字同行 */
.hero-actions-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-actions-row .hero-actions {
  margin-bottom: 0;
}

.hero-actions-row .hero-stats {
  display: flex;
  gap: 28px;
  align-items: center;
  flex-shrink: 0;
}

.hero-actions-row .hero-stats .hero-stat .number {
  font-size: 1.375rem;
}

.hero-actions-row .hero-stats .hero-stat .label {
  font-size: 0.75rem;
  white-space: nowrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 80px;
  white-space: nowrap;
}

.hero-stat .number {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.hero-stat .number .suffix {
  color: var(--color-accent);
}

.hero-stat .label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.15);
  border-radius: var(--radius-full);
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero-eyebrow .dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #2563EB 0%, #06B6D4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-actions .btn {
  padding: 12px 20px;
  font-size: 0.9375rem;
  flex: 1;
  min-width: 0;
  max-width: 200px;
  white-space: nowrap;
}

.btn--secondary {
  background: linear-gradient(135deg, #06B6D4 0%, #14b8a6 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
}

.btn--secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(6, 182, 212, 0.4);
  color: #fff;
}

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

.btn--ghost:hover {
  background: var(--color-accent);
  color: #fff;
}

/* ===== AIVO Diagnosis Component ===== */
.aivo-diagnosis {
  background: #FFFFFF;
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(11, 31, 58, 0.08);
}

.aivo-title {
  margin-bottom: 16px;
}

.aivo-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
  border: 1px solid rgba(37, 99, 235, 0.15);
  border-radius: var(--radius-full);
  color: var(--color-accent);
  font-size: 0.875rem;
  font-weight: 600;
}

.aivo-input-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-bg-alt);
  transition: var(--transition);
}

.aivo-input-row:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  background: #fff;
}

.aivo-input-row .icon {
  color: var(--color-text-light);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.aivo-input-row input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 0.9375rem;
  color: var(--color-text);
  outline: none;
  font-family: inherit;
  min-width: 0;
}

.aivo-input-row input::placeholder {
  color: var(--color-text-light);
}

.aivo-platforms {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.aivo-platform-list {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: nowrap;
  flex: 1;
}

.aivo-platform {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 8px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--color-text);
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.aivo-platform:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.aivo-platform.selected {
  border-color: var(--color-accent);
  background: rgba(37, 99, 235, 0.04);
}

.aivo-checkbox {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1.5px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.aivo-platform.selected .aivo-checkbox {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.aivo-checkbox svg {
  width: 10px;
  height: 10px;
  opacity: 0;
  transform: scale(0.8);
  transition: var(--transition);
}

.aivo-platform.selected .aivo-checkbox svg {
  opacity: 1;
  transform: scale(1);
}

.aivo-logo {
  width: 20px;
  height: 20px;
  display: block;
  flex-shrink: 0;
  object-fit: contain;
}

.aivo-name {
  white-space: nowrap;
}

.aivo-diagnose-btn {
  padding: 10px 22px;
  background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.aivo-diagnose-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.aivo-diagnose-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* ===== Feature Cards ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}

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

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

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

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

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  background: rgba(37, 99, 235, 0.08);
}

.feature-card h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===== GEO Explainer Section ===== */
.geo-explainer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.geo-explainer-content h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.geo-explainer-content p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

.geo-explainer-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.geo-explainer-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.9375rem;
  color: var(--color-text);
}

.geo-explainer-list li .check {
  width: 24px;
  height: 24px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.geo-comparison {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-md);
}

.geo-comparison-table {
  width: 100%;
  border-collapse: collapse;
}

.geo-comparison-table th,
.geo-comparison-table td {
  padding: 14px 16px;
  text-align: left;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border);
}

.geo-comparison-table th {
  font-weight: 700;
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.geo-comparison-table td {
  color: var(--color-text-muted);
}

.geo-comparison-table tr:last-child td {
  border-bottom: none;
}

.geo-comparison-table .highlight {
  color: var(--color-accent);
  font-weight: 600;
}

/* ===== Services Section ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-md);
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: var(--transition);
  position: relative;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent);
}

.service-card .service-number {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-bg-alt);
  line-height: 1;
  z-index: 0;
}

.service-card .service-content {
  position: relative;
  z-index: 1;
}

.service-card .service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.625rem;
  margin-bottom: var(--space-sm);
  background: var(--gradient-accent);
  color: #fff;
}

.service-card h3 {
  font-size: 1.3125rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.service-card > .service-content > p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-features li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--color-text);
}

.service-features li .check {
  color: var(--color-teal);
  flex-shrink: 0;
  margin-top: 3px;
  font-weight: 700;
}

/* ===== Stats Section ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

.stat-item {
  text-align: center;
  padding: var(--space-md);
}

.stat-item .stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-item .stat-label {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.7);
}

/* ===== Process Section ===== */
.process-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
  margin: 0 auto;
}

.process-step {
  display: flex;
  gap: var(--space-md);
  padding-bottom: var(--space-md);
  position: relative;
}

.process-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 27px;
  top: 56px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.process-step .step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  flex-shrink: 0;
  z-index: 1;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.process-step .step-content h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-text);
}

.process-step .step-content p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ===== FAQ Section ===== */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--color-accent);
}

.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-accent);
  font-size: 1.25rem;
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding-bottom: 20px;
}

.faq-answer p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: var(--space-lg) 0 var(--space-md);
}

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

.footer-brand .logo {
  color: #fff;
  margin-bottom: var(--space-sm);
}

.footer-brand .logo .logo-text .logo-sub {
  color: rgba(255,255,255,0.5);
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-sm);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
}

.footer-bottom a {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
}

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

/* ===== Page Hero (inner pages) ===== */
.page-hero {
  padding: calc(var(--header-height) + 60px) 0 60px;
  background: var(--gradient-hero);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.page-hero p {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.7);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--space-sm);
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
}

.breadcrumb a {
  color: rgba(255,255,255,0.7);
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb .separator {
  color: rgba(255,255,255,0.3);
}

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

.about-intro-content h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.about-intro-content p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

.about-intro-visual {
  background: var(--gradient-hero);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.about-intro-visual::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.about-intro-visual .visual-stat {
  margin-bottom: var(--space-sm);
  position: relative;
  z-index: 1;
}

.about-intro-visual .visual-stat .num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-cyan-light);
  line-height: 1;
}

.about-intro-visual .visual-stat .desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  margin-top: 6px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
}

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

.value-card .value-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin: 0 auto var(--space-sm);
}

.value-card h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.value-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===== Team Section ===== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
}

.team-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  text-align: center;
  transition: var(--transition);
}

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

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: #fff;
  font-weight: 700;
  margin: 0 auto var(--space-sm);
}

.team-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.team-card .role {
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.team-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

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

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

.timeline-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  position: relative;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-item .timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 4px solid var(--color-bg);
  z-index: 1;
}

.timeline-item .timeline-content {
  width: calc(50% - 30px);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
}

.timeline-item .timeline-content .year {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.timeline-item .timeline-content h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.timeline-item .timeline-content p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

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

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

.contact-info-item {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
  padding: var(--space-sm);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
}

.contact-info-item .icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--gradient-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-info-item .info h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact-info-item .info p {
  font-size: 1rem;
  color: var(--color-text);
  font-weight: 600;
}

.contact-info-item .info a {
  font-size: 1rem;
  color: var(--color-text);
  font-weight: 600;
}

.contact-info-item .info a:hover {
  color: var(--color-accent);
}

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

.contact-form h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group label .required {
  color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.9375rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-text);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.form-submit {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

.form-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
  text-align: center;
}

/* ===== Pricing ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: var(--transition);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}

.pricing-card.featured .featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.pricing-card .pricing-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.pricing-card .price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.pricing-card .price .unit {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.pricing-card .pricing-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: var(--space-md);
}

.pricing-card .pricing-features li {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--color-text);
}

.pricing-card .pricing-features li .check {
  color: var(--color-teal);
  flex-shrink: 0;
  font-weight: 700;
}

.pricing-card .btn {
  width: 100%;
}

/* ===== Diagnosis Modal ===== */
.diagnosis-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(11, 31, 58, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 20px;
}

.diagnosis-modal.active {
  opacity: 1;
  visibility: visible;
}

.diagnosis-modal-content {
  background: #fff;
  border-radius: 20px;
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px);
  transition: transform 0.3s ease;
}

.diagnosis-modal.active .diagnosis-modal-content {
  transform: translateY(0);
}

.diagnosis-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.diagnosis-modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.diagnosis-modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.diagnosis-modal-close:hover {
  background: var(--color-border);
  color: var(--color-text);
}

.diagnosis-brand {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 24px;
  text-align: center;
}

.diagnosis-brand-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.diagnosis-brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.diagnosis-score {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.diagnosis-score-item {
  text-align: center;
  padding: 16px 8px;
  background: var(--color-bg-alt);
  border-radius: 12px;
}

.diagnosis-score-item .score-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.diagnosis-score-item .score-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

.diagnosis-summary {
  margin-bottom: 24px;
}

.diagnosis-summary h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.diagnosis-summary ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.diagnosis-summary li {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.diagnosis-summary li .icon {
  color: var(--color-teal);
  font-weight: 700;
  flex-shrink: 0;
}

.diagnosis-expert {
  background: linear-gradient(135deg, #0B1F3A 0%, #1e3a5f 100%);
  border-radius: 12px;
  padding: 20px;
  color: #fff;
  margin-bottom: 24px;
}

.diagnosis-expert h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.diagnosis-expert p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
  margin-bottom: 16px;
}

.diagnosis-expert .btn {
  width: 100%;
}

.diagnosis-loading {
  text-align: center;
  padding: 40px 20px;
}

.diagnosis-loading .spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 16px;
}

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

.diagnosis-loading p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 968px) {
  .hero-inner {
    grid-template-columns: 1fr;
    grid-template-areas:
      "image"
      "content"
      "diagnosis";
    gap: 40px;
  }

  .hero-image {
    max-width: 500px;
    margin: 0 auto;
  }

  .hero-actions-row {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .hero-stats {
    justify-content: center;
    gap: 32px;
  }

  .hero-stat {
    align-items: center;
    text-align: center;
  }

  .aivo-diagnosis {
    max-width: 560px;
    margin: 0 auto;
  }

  .hero-content {
    text-align: center;
    margin: 0 auto;
  }

  .hero-subtitle,
  .aivo-diagnosis {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .aivo-platforms {
    flex-direction: column;
    align-items: stretch;
  }

  .aivo-platform-list {
    justify-content: center;
    flex-wrap: wrap;
  }

  .aivo-diagnose-btn {
    width: 100%;
    justify-content: center;
  }

  .geo-explainer,
  .about-intro,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .timeline::before {
    left: 20px;
  }

  .timeline-item,
  .timeline-item:nth-child(even) {
    flex-direction: row;
    padding-left: 50px;
  }

  .timeline-item .timeline-dot {
    left: 20px;
  }

  .timeline-item .timeline-content {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: var(--space-sm);
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }

  .nav.active {
    display: flex;
  }

  .nav a {
    width: 100%;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 8px;
  }

  .nav-cta .btn {
    width: 100%;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero-actions-row {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .hero-actions-row .hero-stats {
    gap: 16px;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .pricing-card.featured {
    transform: none;
  }

  .section {
    padding: var(--space-lg) 0;
  }

  .cases-grid,
  .news-list,
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Cases Section (合作案例) ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-md);
}

.case-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent);
}

.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

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

.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.case-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.5;
}

.case-card .case-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.case-result {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.06) 0%, rgba(6, 182, 212, 0.06) 100%);
  border-radius: var(--radius-sm);
}

.case-result .result-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.case-result .result-text {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* ===== News Section (行业动态) ===== */
.news-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  max-width: 860px;
  margin: 0 auto;
}

.news-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  align-items: flex-start;
}

.news-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.news-date {
  flex-shrink: 0;
  width: 80px;
  text-align: center;
  padding: 8px 0;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  color: #fff;
}

.news-date .day {
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
}

.news-date .month {
  font-size: 0.6875rem;
  font-weight: 500;
  margin-top: 2px;
}

.news-content {
  flex: 1;
  min-width: 0;
}

.news-content h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.5;
}

.news-content h3 a {
  color: inherit;
}

.news-content h3 a:hover {
  color: var(--color-accent);
}

.news-content p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.news-tag {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(6, 182, 212, 0.1);
  color: var(--color-cyan);
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  margin-top: 6px;
}

/* ===== Reviews Section (客户评价) ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.review-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  position: relative;
  transition: var(--transition);
}

.review-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.review-card .quote-mark {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 3rem;
  color: rgba(37, 99, 235, 0.1);
  font-family: Georgia, serif;
  line-height: 1;
}

.review-text {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: var(--space-sm);
  position: relative;
  z-index: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.125rem;
  font-weight: 700;
  flex-shrink: 0;
}

.review-info .review-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
}

.review-info .review-role {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ===== Section eyebrow with label ===== */
.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-light);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

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

  .hero-actions .btn {
    width: 100%;
    max-width: none;
  }

  .hero-actions-row .hero-stats {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
  }

  .hero-eyebrow {
    font-size: 0.75rem;
  }

  .aivo-platform-list {
    gap: 8px;
  }

  .aivo-platform {
    padding: 5px 8px;
    font-size: 0.75rem;
  }
}

/* ===== Page Banner (Sub-page Hero) ===== */
.page-banner {
  background: var(--gradient-hero);
  color: #fff;
  padding: calc(var(--header-height) + 48px) 0 48px;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%);
}

.page-banner .container {
  position: relative;
  z-index: 1;
}

.page-banner h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.page-banner p {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 640px;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  padding: 16px 0;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb ul {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.breadcrumb ul li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb ul li::after {
  content: '/';
  color: var(--color-text-light);
  font-size: 0.75rem;
}

.breadcrumb ul li:last-child::after {
  display: none;
}

.breadcrumb ul li a {
  color: var(--color-text-muted);
  transition: var(--transition);
}

.breadcrumb ul li a:hover {
  color: var(--color-accent);
}

.breadcrumb ul li.current {
  color: var(--color-text);
  font-weight: 600;
}

/* ===== List Page Layout (Cases & News) ===== */
.list-page {
  padding: var(--space-lg) 0;
}

.list-page .container {
  max-width: 960px;
}

/* Cases list page - card grid with more detail */
.cases-page-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.cases-page-grid .case-card {
  padding: var(--space-md);
}

.cases-page-grid .case-card h3 {
  font-size: 1.25rem;
}

.cases-page-grid .case-card .case-desc {
  font-size: 0.9375rem;
}

.cases-page-grid .case-card .case-detail {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.cases-page-grid .case-detail-item {
  font-size: 0.8125rem;
}

.cases-page-grid .case-detail-item .label {
  color: var(--color-text-light);
  font-size: 0.75rem;
  display: block;
  margin-bottom: 2px;
}

.cases-page-grid .case-detail-item .value {
  color: var(--color-text);
  font-weight: 600;
}

/* News list page */
.news-page-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-page-item {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}

.news-page-item:first-child {
  padding-top: 0;
}

.news-page-item:last-child {
  border-bottom: none;
}

.news-page-item:hover {
  padding-left: 12px;
}

.news-page-item:hover h3 {
  color: var(--color-accent);
}

.news-page-item .news-page-date {
  flex-shrink: 0;
  width: 72px;
  text-align: center;
  padding: 12px 0;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.news-page-item .news-page-date .day {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.news-page-item .news-page-date .month {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.news-page-item .news-page-content {
  flex: 1;
  min-width: 0;
}

.news-page-item h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
  transition: var(--transition);
}

.news-page-item p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 10px;
}

.news-page-item .news-page-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.news-page-item .news-page-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(6, 182, 212, 0.1);
  color: var(--color-cyan);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.news-page-item .news-page-read {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: var(--space-lg);
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition);
}

.pagination a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.pagination .current {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  font-weight: 600;
}

.pagination .disabled {
  color: var(--color-text-light);
  cursor: not-allowed;
}

/* ===== Article Detail Page ===== */
.article-page {
  padding: var(--space-lg) 0;
}

.article-page .container {
  max-width: 800px;
}

.article-header {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-border);
}

.article-header h1 {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.article-meta .meta-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.article-meta .meta-sep {
  color: var(--color-text-light);
}

.article-body {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text);
}

.article-body h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 32px 0 16px;
  padding-left: 12px;
  border-left: 4px solid var(--color-accent);
}

.article-body h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 24px 0 12px;
}

.article-body p {
  margin-bottom: 16px;
}

.article-body ul,
.article-body ol {
  margin: 16px 0;
  padding-left: 24px;
}

.article-body ul li,
.article-body ol li {
  margin-bottom: 8px;
  line-height: 1.8;
}

.article-body blockquote {
  margin: 24px 0;
  padding: 16px 24px;
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.article-body strong {
  color: var(--color-text);
  font-weight: 700;
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--color-accent);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.9375rem;
}

.article-body table th,
.article-body table td {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.article-body table th {
  background: var(--color-bg-alt);
  font-weight: 700;
  color: var(--color-text);
}

.article-body table tr:hover {
  background: var(--color-bg-alt);
}

.article-footer {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 2px solid var(--color-border);
}

.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.article-nav-item {
  padding: 16px 20px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}

.article-nav-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.article-nav-item .nav-label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.article-nav-item .nav-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

.article-nav-item.next {
  text-align: right;
}

.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
}

.article-share .share-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.article-share .share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.article-share .share-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* ===== List filter bar ===== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
  padding: 16px 20px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.filter-bar .filter-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

.filter-bar .filter-tag {
  padding: 6px 16px;
  font-size: 0.875rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.filter-bar .filter-tag:hover,
.filter-bar .filter-tag.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* ===== Responsive for new pages ===== */
@media (max-width: 768px) {
  .page-banner h1 {
    font-size: 1.75rem;
  }

  .page-banner p {
    font-size: 0.9375rem;
  }

  .cases-page-grid {
    grid-template-columns: 1fr;
  }

  .news-page-item {
    flex-direction: column;
    gap: 12px;
  }

  .news-page-item .news-page-date {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
  }

  .news-page-item .news-page-date .day {
    font-size: 1.25rem;
  }

  .article-header h1 {
    font-size: 1.5rem;
  }

  .article-body {
    font-size: 0.9375rem;
  }

  .article-nav {
    grid-template-columns: 1fr;
  }

  .article-nav-item.next {
    text-align: left;
  }

  .filter-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== Compliance Page ===== */
.compliance-section {
  padding: var(--space-xl) 0;
  background: var(--color-bg, #f8fafc);
}

.compliance-wrap {
  max-width: 860px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  padding: 48px 56px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
}

.compliance-intro {
  font-size: 1.125rem;
  color: var(--color-text-light, #64748b);
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.7;
}

.compliance-body h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-dark, #0B1F3A);
  margin: 40px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--color-primary, #2563EB);
}

.compliance-body h2:first-child {
  margin-top: 0;
}

.compliance-body h2 .icon {
  margin-right: 8px;
}

.compliance-body p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text, #1e293b);
  margin-bottom: 16px;
}

.compliance-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 32px;
}

.compliance-list li {
  padding: 14px 18px;
  margin-bottom: 10px;
  border-radius: 10px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text, #1e293b);
}

.compliance-list.reject li {
  background: #fef2f2;
  border-left: 4px solid #ef4444;
}

.compliance-list.commit li {
  background: #f0fdf4;
  border-left: 4px solid #22c55e;
}

.compliance-list.risk li {
  background: #fffbeb;
  border-left: 4px solid #f59e0b;
}

.compliance-list li strong {
  color: var(--color-dark, #0B1F3A);
  font-weight: 700;
  display: inline-block;
  margin-right: 4px;
}

.compliance-list.boundary li {
  background: #eff6ff;
  border-left: 4px solid var(--color-primary, #2563EB);
}

.compliance-list.signal li {
  background: #fef2f2;
  border-left: 4px solid #ef4444;
}

.compliance-blockquote {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border-radius: 12px;
  padding: 28px 32px;
  margin: 32px 0;
  text-align: center;
}

.compliance-blockquote p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-dark, #0B1F3A);
  margin: 0;
}

.compliance-blockquote strong {
  color: var(--color-primary, #2563EB);
  font-size: 1.125rem;
}

.compliance-warning-box {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 12px;
  padding: 24px 28px;
  margin: 24px 0;
}

.compliance-warning-box h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: #92400e;
  margin: 0 0 12px;
}

@media (max-width: 768px) {
  .compliance-wrap {
    padding: 28px 20px;
  }

  .compliance-body h2 {
    font-size: 1.25rem;
  }

  .compliance-intro {
    font-size: 1rem;
  }
}