/* ==========================================
   北京飞元悦动科技有限公司 - 企业官网
   Design System & Base Styles
   ========================================== */

/* --- CSS Variables (Design Tokens) --- */
:root {
  /* Colors */
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-primary-light: #DBEAFE;
  --color-primary-glow: #93C5FD;
  --color-accent: #0EA5E9;
  --color-accent-dark: #0284C7;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-bg-card: #FFFFFF;
  --color-text: #1E293B;
  --color-text-secondary: #64748B;
  --color-text-light: #94A3B8;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #2563EB 0%, #0EA5E9 50%, #6366F1 100%);
  --gradient-card: linear-gradient(135deg, #F8FAFC 0%, #EFF6FF 100%);
  --gradient-section: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 25px -5px rgba(37, 99, 235, 0.08), 0 8px 10px -6px rgba(37, 99, 235, 0.05);
  --shadow-xl: 0 20px 40px -10px rgba(37, 99, 235, 0.15);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* 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;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Section max-width */
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  font-family: var(--font-sans);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-hero);
  color: #FFFFFF;
  box-shadow: var(--shadow-lg);
}

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

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

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

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

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

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

/* --- Section Common --- */
.section {
  padding: var(--space-4xl) 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-label {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.section-subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

.company-en-name {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin: calc(-1 * var(--space-xs)) 0 var(--space-md);
  line-height: 1.5;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  transition: var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-primary);
  min-width: 0;
  max-width: 520px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-hero);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.15;
}

.logo-cn {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

.logo-en {
  margin-top: 3px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
  position: relative;
  padding: 4px 0;
}

.nav a:hover,
.nav a.active {
  color: var(--color-primary);
}

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

/* --- Hero --- */
.hero {
  padding: 160px 0 var(--space-4xl);
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(255,255,255,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 60%, rgba(99,102,241,0.2) 0%, transparent 60%);
  pointer-events: none;
}

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

.hero-content {
  max-width: 680px;
  color: #FFFFFF;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: var(--space-lg);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: #10B981;
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.03em;
}

.hero-company-en {
  font-size: 18px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.76);
  margin-bottom: var(--space-lg);
}

.hero-desc {
  font-size: 18px;
  line-height: 1.7;
  opacity: 0.85;
  margin-bottom: var(--space-xl);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Hero decorative elements */
.hero-decoration {
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 400px;
  opacity: 0.15;
  pointer-events: none;
}

.hero-decoration .circle-1 {
  position: absolute;
  width: 300px;
  height: 300px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  top: 0;
  right: 0;
}

.hero-decoration .circle-2 {
  position: absolute;
  width: 200px;
  height: 200px;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  bottom: 40px;
  right: 80px;
}

.hero-decoration .circle-3 {
  position: absolute;
  width: 120px;
  height: 120px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  top: 100px;
  left: 0;
}

/* --- Services --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: var(--transition-normal);
  cursor: default;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-light);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  font-size: 24px;
}

.service-icon.blue {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.service-icon.cyan {
  background: #CFFAFE;
  color: #0891B2;
}

.service-icon.indigo {
  background: #E0E7FF;
  color: #4F46E5;
}

.service-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.service-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- Paid Consultation (有偿咨询) --- */
.consultation {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}

.consultation::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

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

.consultation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.consultation-content .section-label {
  background: rgba(37, 99, 235, 0.3);
  color: var(--color-primary-glow);
}

.consultation-content .section-title {
  color: #FFFFFF;
}

.consultation-content .section-subtitle {
  color: rgba(255, 255, 255, 0.6);
}

.consultation-features {
  margin-top: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.consultation-feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.consultation-feature .check {
  width: 28px;
  height: 28px;
  min-width: 28px;
  background: rgba(37, 99, 235, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--color-primary-glow);
}

.consultation-feature .info h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 2px;
}

.consultation-feature .info p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.consultation-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
}

.consultation-card .price-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-sm);
}

.consultation-card .price {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-sm);
}

.consultation-card .price span {
  font-size: 20px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.6);
}

.consultation-card .price-note {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.consultation-feature-list {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.consultation-feature-list li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.consultation-feature-list li::before {
  content: '✓';
  color: var(--color-primary-glow);
  font-weight: 700;
}

.consultation-card .btn-primary {
  width: 100%;
}

/* --- Projects / Cases --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
}

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

.project-image {
  height: 200px;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--color-primary-light);
}

.project-image.app { background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%); }
.project-image.ai { background: linear-gradient(135deg, #F5F3FF 0%, #EDE9FE 100%); }
.project-image.web { background: linear-gradient(135deg, #ECFEFF 0%, #CFFAFE 100%); }

.project-body {
  padding: var(--space-lg);
}

.project-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
}

.project-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.project-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-image {
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
  color: rgba(255,255,255,0.8);
  font-size: 18px;
  text-align: center;
  line-height: 1.8;
  position: relative;
  overflow: hidden;
}

.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 70%, rgba(99,102,241,0.3) 0%, transparent 60%);
}

.about-image-content {
  position: relative;
  z-index: 1;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

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

.about-stat .number {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.about-stat .label {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-info-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.contact-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

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

.contact-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-primary);
}

.contact-text h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
}

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

.contact-qr {
  text-align: center;
}

.contact-qr-placeholder {
  width: 160px;
  height: 160px;
  background: var(--color-border-light);
  border-radius: var(--radius-md);
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 13px;
}

.contact-qr p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* --- News / Articles --- */
.news-section {
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
}

.news-feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-xl);
  align-items: center;
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.news-feature-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.news-feature h3 {
  font-size: 24px;
  line-height: 1.35;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.news-feature p {
  max-width: 720px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.news-feature-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: flex-end;
}

.news-feature-meta span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 700;
  background: var(--color-primary-light);
  color: var(--color-primary);
  white-space: nowrap;
}

.news-feature-meta span:last-child {
  background: #FEF3C7;
  color: #B45309;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.news-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  min-height: 260px;
  box-shadow: var(--shadow-sm);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-light);
}

.news-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.news-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.news-price {
  font-size: 13px;
  font-weight: 700;
  color: #B45309;
  background: #FEF3C7;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
  line-height: 1.4;
}

.news-card > p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-lg);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border-light);
  padding-top: var(--space-md);
}

.news-card-date {
  font-size: 13px;
  color: var(--color-text-light);
}

.btn-pay-read {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  background: var(--color-primary);
  color: #FFFFFF;
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  font-family: var(--font-sans);
  white-space: nowrap;
}

.btn-pay-read::after {
  content: '→';
  font-size: 14px;
  line-height: 1;
}

.btn-pay-read:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* --- Payment Modal --- */
body.modal-open {
  overflow: hidden;
}

.pay-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.pay-modal-overlay.active {
  display: flex;
}

.pay-modal {
  background: #FFF;
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.25);
  position: relative;
  animation: modalIn 0.25s ease-out;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.pay-modal-header {
  padding: var(--space-xl) var(--space-xl) 0;
  text-align: center;
}

.pay-label {
  background: rgba(245, 158, 11, 0.15);
  color: #B45309;
}

.pay-modal-subtitle {
  margin: var(--space-sm) auto 0;
  max-width: 360px;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.pay-modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: none;
  background: var(--color-bg-alt);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
  z-index: 1;
}

.pay-modal-close:hover {
  background: #E2E8F0;
  color: var(--color-text);
}

.pay-modal-qr {
  padding: var(--space-xl);
  text-align: center;
}

.pay-modal-qr h4 {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: var(--space-lg);
}

.pay-modal-qr .qr-img {
  width: 176px;
  height: 176px;
  margin: 0 auto var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  background: #FFF;
  box-shadow: var(--shadow-sm);
}

.pay-modal-qr .qr-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pay-modal-qr .price-tag {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.pay-modal-qr .price-note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
}

.pay-modal-body {
  padding: var(--space-xl);
  display: none;
}

.pay-modal-body.visible {
  display: block;
}

.pay-modal-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
  line-height: 1.4;
}

.pay-modal-body .article-content {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.9;
}

.pay-modal-body .article-content p {
  margin-bottom: var(--space-md);
}

.pay-modal-body .article-content h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin: var(--space-lg) 0 var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border-light);
}

/* --- Footer --- */
.footer {
  background: #0F172A;
  color: rgba(255, 255, 255, 0.6);
  padding: var(--space-2xl) 0 var(--space-xl);
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: var(--space-xl);
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.footer-en-name {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  margin-top: calc(-1 * var(--space-sm));
  margin-bottom: var(--space-sm);
}

.footer-col p {
  line-height: 1.8;
  margin-bottom: var(--space-sm);
}

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

.footer-col a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-bottom a {
  color: rgba(255,255,255,0.4);
  transition: var(--transition-fast);
}

.footer-bottom a:hover {
  color: #FFFFFF;
}

.icp-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.5);
}

.icp-link:hover {
  color: #FFFFFF;
}

/* --- Mobile menu toggle --- */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

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

/* --- Page (隐私政策/用户协议) --- */
.page-hero {
  padding: 120px 0 var(--space-2xl);
  background: var(--gradient-hero);
  color: #FFFFFF;
  text-align: center;
}

.page-hero h1 {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-content {
  padding: var(--space-3xl) 0;
  max-width: 800px;
  margin: 0 auto;
}

.page-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: var(--space-xl) 0 var(--space-md);
  color: var(--color-text);
}

.page-content p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.page-content ul {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.page-content li {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 4px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .services-grid,
  .projects-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-title {
    font-size: 38px;
  }

  .section-title {
    font-size: 30px;
  }

  .hero-decoration {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-3xl) 0;
  }

  .hero {
    padding: 120px 0 var(--space-3xl);
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-company-en {
    font-size: 15px;
  }

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

  .section-title {
    font-size: 24px;
    word-break: break-all;
  }

  .company-en-name {
    font-size: 14px;
  }

  .section-subtitle,
  .company-en-name,
  .service-card p,
  .project-body p,
  .news-card > p,
  .contact-text p,
  .footer-col p {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .services-grid,
  .projects-grid,
  .news-grid {
    grid-template-columns: 1fr;
  }

  .news-feature {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    padding: var(--space-lg);
  }

  .news-feature h3 {
    font-size: 20px;
  }

  .news-feature-meta {
    align-items: flex-start;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .news-card {
    min-height: auto;
  }

  .news-card-bottom {
    gap: var(--space-md);
  }

  .pay-modal-overlay {
    padding: var(--space-md);
    align-items: flex-end;
  }

  .pay-modal {
    max-height: 88vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }

  .pay-modal-header,
  .pay-modal-qr,
  .pay-modal-body {
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }

  .consultation-grid,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

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

  .mobile-toggle {
    display: flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-md);
  }

  .nav.open {
    display: flex;
  }

  .header-inner {
    height: 64px;
  }

  .logo {
    max-width: calc(100% - 48px);
  }

  .logo-cn {
    font-size: 13px;
  }

  .logo-en {
    font-size: 10px;
    margin-top: 2px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    min-width: 32px;
  }

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

  .hero-actions .btn {
    width: 100%;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
  }
}