/* ============================================
   影创万象官网样式表
   版本: 1.0.0
   ============================================ */

/* CSS 变量 */
:root {
  --color-bg: #050816;
  --color-bg-elevated: #0a0f2c;
  --color-bg-card: rgba(255, 255, 255, 0.04);
  --color-bg-card-hover: rgba(255, 255, 255, 0.08);
  --color-primary: #7c3aed;
  --color-primary-light: #a855f7;
  --color-secondary: #3b82f6;
  --color-accent: #ec4899;
  --color-text: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-light: rgba(255, 255, 255, 0.06);

  --gradient-primary: linear-gradient(135deg, #7c3aed 0%, #3b82f6 50%, #ec4899 100%);
  --gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(124, 58, 237, 0.25) 0%, transparent 55%),
                    radial-gradient(ellipse at 80% 30%, rgba(59, 130, 246, 0.18) 0%, transparent 45%),
                    radial-gradient(ellipse at 20% 70%, rgba(236, 72, 153, 0.12) 0%, transparent 40%);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
  --gradient-text: linear-gradient(135deg, #c084fc 0%, #60a5fa 50%, #f472b6 100%);
  --gradient-section: linear-gradient(180deg, #050816 0%, #0c1029 50%, #050816 100%);

  --font-display: 'Outfit', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.25);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.2);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.35);

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --container-max: 1200px;
  --header-height: 80px;
}

/* 重置与基础 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

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

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

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

ul, ol {
  list-style: none;
}

button, input, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* 背景光效 */
.ambient-light {
  position: fixed;
  top: -20%;
  left: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 65%);
  pointer-events: none;
  z-index: -1;
  filter: blur(80px);
  animation: ambientFloat 20s ease-in-out infinite;
}

.ambient-light--secondary {
  top: auto;
  bottom: -10%;
  left: auto;
  right: -10%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 65%);
  animation-delay: -10s;
}

@keyframes ambientFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(5%, 5%) scale(1.1); }
}

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

@media (min-width: 768px) {
  .container {
    padding: 0 40px;
  }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--sm {
  padding: 10px 20px;
  font-size: 14px;
}

.btn--lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124, 58, 237, 0.5);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn--full {
  width: 100%;
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: background var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  background: rgba(5, 8, 22, 0.85);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--color-text);
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.main-nav {
  display: none;
}

.nav-list {
  display: flex;
  gap: 32px;
}

.nav-list a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.nav-list a:hover {
  color: var(--color-text);
}

.nav-list a:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.mobile-menu-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: rgba(5, 8, 22, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 24px;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-nav-list a {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 8px 0;
}

.mobile-nav-list a:hover {
  color: var(--color-text);
}

@media (min-width: 1024px) {
  .main-nav {
    display: block;
  }
  .mobile-menu-toggle {
    display: none;
  }
}

/* Section 通用 */
.section {
  padding: 100px 0;
  position: relative;
}

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

.section--gradient {
  background: var(--gradient-section);
}

.section-header {
  max-width: 720px;
  margin-bottom: 64px;
}

.section-header--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: 16px;
}

.section-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gradient-primary);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 20px;
}

.section-desc {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 60px) 0 100px;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 640px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 10px #22c55e;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

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

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-trust {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  flex-direction: column;
}

.trust-item strong {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.trust-item span {
  font-size: 14px;
  color: var(--color-text-muted);
}

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

.hero-visual-card {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.play-ring {
  position: relative;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, #7c3aed, #3b82f6, #ec4899, #7c3aed);
  animation: rotate 20s linear infinite;
  box-shadow: var(--shadow-glow);
}

.play-ring-core {
  position: absolute;
  inset: 16px;
  border-radius: 50%;
  background: var(--color-bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: rotate 20s linear infinite reverse;
}

.play-ring-core::after {
  content: '';
  width: 0;
  height: 0;
  border-top: 36px solid transparent;
  border-bottom: 36px solid transparent;
  border-left: 56px solid #fff;
  margin-left: 14px;
  filter: drop-shadow(0 0 20px rgba(124, 58, 237, 0.5));
}

.play-ring-orb {
  position: absolute;
  border-radius: 50%;
  background: var(--gradient-primary);
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.6);
}

.orb-1 {
  width: 24px;
  height: 24px;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
}

.orb-2 {
  width: 16px;
  height: 16px;
  bottom: 30px;
  right: -8px;
}

.orb-3 {
  width: 12px;
  height: 12px;
  bottom: 20px;
  left: 20px;
}

.hero-visual-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.3) 0%, transparent 70%);
  filter: blur(40px);
  z-index: -1;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-primary-light), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@media (min-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1.1fr 0.9fr;
  }
  .hero-visual-card {
    width: 420px;
    height: 420px;
  }
  .play-ring {
    width: 340px;
    height: 340px;
  }
  .play-ring-core::after {
    border-top: 46px solid transparent;
    border-bottom: 46px solid transparent;
    border-left: 72px solid #fff;
    margin-left: 18px;
  }
}

/* 数据亮点 */
.stats-section {
  padding: 60px 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  background: var(--color-bg-card-hover);
  transform: translateY(-4px);
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(32px, 6vw, 48px);
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

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

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
}

/* 公司介绍 */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.about-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all var(--transition-base);
}

.about-card:hover {
  border-color: rgba(124, 58, 237, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.about-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-primary-light);
  margin-bottom: 24px;
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.about-card p {
  color: var(--color-text-secondary);
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 核心服务 */
.services-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.service-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: all var(--transition-base);
}

.service-block:hover {
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: var(--shadow-card-hover);
}

.service-block-content {
  order: 2;
}

.service-block-visual {
  order: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.service-index {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary-light);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  display: block;
}

.service-block h3 {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  margin-bottom: 16px;
}

.service-block > p {
  color: var(--color-text-secondary);
  font-size: 17px;
  margin-bottom: 28px;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.service-features li {
  position: relative;
  padding-left: 24px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-primary);
}

.service-features strong {
  color: var(--color-text);
  font-weight: 600;
}

.service-visual {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: var(--shadow-glow);
}

.service-visual--alt {
  background: linear-gradient(135deg, #3b82f6 0%, #ec4899 100%);
}

@media (min-width: 1024px) {
  .service-block {
    grid-template-columns: 1fr 320px;
    padding: 56px;
  }
  .service-block-content {
    order: 1;
  }
  .service-block-visual {
    order: 2;
  }
  .service-visual {
    width: 240px;
    height: 240px;
  }
}

/* 商家收益 */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.benefit-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition-base);
}

.benefit-card:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(124, 58, 237, 0.3);
  transform: translateY(-4px);
}

.benefit-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.benefit-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.benefit-card p {
  color: var(--color-text-secondary);
  font-size: 15px;
}

@media (min-width: 640px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .benefits-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 八大核心优势 */
.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.advantage-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.advantage-card:hover {
  background: var(--color-bg-card-hover);
  transform: translateY(-4px);
}

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

.advantage-number {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: 16px;
}

.advantage-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.advantage-card p {
  color: var(--color-text-secondary);
  font-size: 15px;
}

@media (min-width: 640px) {
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .advantages-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 合作模式 */
.cooperation-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.cooperation-model,
.cooperation-steps {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.model-header {
  margin-bottom: 16px;
}

.model-tag {
  display: inline-block;
  padding: 6px 12px;
  background: rgba(124, 58, 237, 0.15);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary-light);
  margin-bottom: 12px;
}

.cooperation-model h3 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
}

.model-desc {
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.model-compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.model-compare-block {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.model-compare-block--primary {
  border-color: rgba(124, 58, 237, 0.3);
  background: linear-gradient(145deg, rgba(124, 58, 237, 0.1) 0%, rgba(124, 58, 237, 0.02) 100%);
}

.model-compare-block h4 {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.model-compare-block ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.model-compare-block li {
  position: relative;
  padding-left: 20px;
  color: var(--color-text-secondary);
  font-size: 15px;
}

.model-compare-block li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-muted);
}

.model-compare-block--primary li::before {
  background: var(--color-primary-light);
}

.model-note {
  padding: 16px 20px;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 15px;
}

.model-note strong {
  color: #22c55e;
}

.steps-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 28px;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.steps-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: #fff;
}

.step-content h4 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

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

@media (min-width: 1024px) {
  .cooperation-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
  .model-compare {
    grid-template-columns: 1fr 1fr;
  }
}

/* 联系我们 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.contact-info {
  max-width: 520px;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 40px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.contact-card:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(124, 58, 237, 0.3);
}

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

.contact-label {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 16px;
  color: var(--color-text);
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: 64px;
  }
}

/* 联系二维码 */
.contact-qrcodes {
  display: flex;
  justify-content: center;
}

.qr-panel {
  width: 100%;
  max-width: 420px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.qr-panel-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
}

.qr-list {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.qr-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.qr-card img {
  width: 160px;
  height: auto;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base);
}

.qr-card:hover img {
  transform: scale(1.03);
}

.qr-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.qr-tip {
  margin-top: 24px;
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
}

/* Footer */
.site-footer {
  padding: 60px 0 32px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: flex-start;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--color-text-secondary);
  margin-top: 12px;
  font-size: 15px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-nav a {
  color: var(--color-text-secondary);
  font-size: 15px;
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--color-text);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  gap: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text-muted);
  font-size: 14px;
}

.beian a {
  color: var(--color-text-muted);
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.beian a:hover {
  color: var(--color-text-secondary);
  border-bottom-color: var(--color-border);
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* 滚动显示动画 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 减少动画偏好 */
@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;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* 返回顶部 */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  z-index: 999;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(124, 58, 237, 0.5);
}

/* 打印样式 */
@media print {
  .site-header,
  .hero-scroll,
  .hero-visual,
  .mobile-menu-toggle,
  .ambient-light {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  .section {
    padding: 40px 0;
  }
}