/* 跃洋影视官网样式表 - 高端影视+AI主题 */

:root {
  --color-bg: #05070a;
  --color-bg-2: #0a0f18;
  --color-bg-3: #0d1320;
  --color-surface: rgba(255, 255, 255, 0.04);
  --color-surface-strong: rgba(255, 255, 255, 0.08);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #f0f4f8;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-primary: #00d4ff;
  --color-primary-dark: #0099cc;
  --color-secondary: #a855f7;
  --color-accent: #f472b6;
  --color-gold: #fbbf24;
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #0099ff 50%, #a855f7 100%);
  --gradient-hero: radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.18) 0%, transparent 50%),
                     radial-gradient(ellipse at 80% 30%, rgba(168, 85, 247, 0.14) 0%, transparent 45%),
                     radial-gradient(ellipse at 50% 100%, rgba(0, 153, 255, 0.12) 0%, transparent 50%);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  position: relative;
  padding: 110px 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 70px;
}

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding: 6px 14px;
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.06);
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 18px;
  background: linear-gradient(90deg, #fff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* 顶部导航 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition);
  padding: 18px 0;
}

.header.scrolled {
  background: rgba(5, 7, 10, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}

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

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

.logo img {
  height: 42px;
  width: auto;
}

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

.logo-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.2;
}

.logo-sub {
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 999px;
  transition: var(--transition);
}

.nav a:hover,
.nav a.active {
  color: var(--color-text);
  background: var(--color-surface-strong);
}

.nav-cta {
  margin-left: 12px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  color: #000;
  background: var(--gradient-primary);
  border-radius: 999px;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 212, 255, 0.35);
}

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

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

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 90px;
  overflow: hidden;
  background: var(--gradient-hero), var(--color-bg);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  pointer-events: none;
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.12;
  filter: blur(1px);
  animation: float 12s infinite ease-in-out;
}

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-40px) translateX(20px); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-primary);
  margin-bottom: 28px;
  width: fit-content;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 10px var(--color-primary);
  animation: pulse 2s infinite;
}

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

.hero-title {
  font-size: clamp(38px, 5.5vw, 68px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

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

.hero-desc {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-bottom: 38px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #000;
  box-shadow: 0 4px 24px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.4);
}

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

.btn-secondary:hover {
  background: var(--color-surface-strong);
  border-color: rgba(255, 255, 255, 0.2);
}

.hero-stats {
  display: flex;
  gap: 48px;
}

.hero-stat {
  position: relative;
}

.hero-stat .num {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.hero-stat .num span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-stat .label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 8px;
}

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

.hero-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.22) 0%, transparent 70%);
  filter: blur(40px);
  animation: glowPulse 6s infinite ease-in-out;
}

@keyframes glowPulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.1); opacity: 1; }
}

.hero-phone {
  position: relative;
  width: 280px;
  border-radius: 36px;
  overflow: hidden;
  border: 4px solid rgba(255,255,255,0.08);
  box-shadow: 0 30px 80px rgba(0,0,0,0.5), var(--shadow-glow);
  transform: perspective(1000px) rotateY(-12deg) rotateX(6deg);
  transition: var(--transition);
}

.hero-phone:hover {
  transform: perspective(1000px) rotateY(-6deg) rotateX(3deg);
}

.hero-phone img {
  width: 100%;
  height: auto;
}

/* 通用卡片 */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.card:hover {
  background: var(--color-surface-strong);
  border-color: rgba(0, 212, 255, 0.2);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.icon-box {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(168, 85, 247, 0.12));
  border: 1px solid rgba(0, 212, 255, 0.15);
}

/* 数据统计条 */
.stats-bar {
  background: linear-gradient(90deg, rgba(0, 212, 255, 0.08), rgba(168, 85, 247, 0.08));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 40px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 16px;
}

.stat-item .value {
  font-size: 36px;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.stat-item .label {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 10px;
}

/* 关于我们 */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.about-img:first-child {
  grid-row: span 2;
}

.about-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.about-img:hover img {
  transform: scale(1.05);
}

.about-content h3 {
  font-size: 28px;
  margin-bottom: 20px;
  font-weight: 700;
}

.about-content p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  font-size: 16px;
}

.about-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-feature i {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #000;
  flex-shrink: 0;
  margin-top: 3px;
}

.about-feature span {
  font-size: 15px;
  color: var(--color-text);
}

/* AI平台 */
.ai-section {
  background: var(--color-bg-2);
}

.ai-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 70px;
}

.ai-info h3 {
  font-size: 32px;
  margin-bottom: 20px;
}

.ai-info p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.ai-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.ai-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-text);
  transition: var(--transition);
}

.ai-link:hover {
  border-color: var(--color-primary);
  background: rgba(0, 212, 255, 0.08);
}

.ai-showcase {
  position: relative;
}

.ai-showcase-main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.ai-showcase-main img {
  width: 100%;
}

.ai-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.ai-feature {
  text-align: center;
  padding: 28px 20px;
}

.ai-feature .icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 26px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(168, 85, 247, 0.15));
  border: 1px solid rgba(0, 212, 255, 0.18);
}

.ai-feature h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.ai-feature p {
  font-size: 13px;
  color: var(--color-text-muted);
}

.ai-models {
  margin-top: 70px;
}

.ai-models h3 {
  text-align: center;
  font-size: 26px;
  margin-bottom: 40px;
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.model-card {
  padding: 24px 16px;
  text-align: center;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.model-card:hover {
  border-color: var(--color-secondary);
  transform: translateY(-4px);
}

.model-card .tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(168, 85, 247, 0.15);
  color: var(--color-secondary);
  margin-bottom: 12px;
}

.model-card h4 {
  font-size: 15px;
  margin-bottom: 6px;
}

.model-card p {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* 服务 */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg-2);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: var(--shadow-card);
}

.service-card .service-img {
  height: 190px;
  overflow: hidden;
}

.service-card .service-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.service-card:hover .service-img img {
  transform: scale(1.08);
}

.service-card .service-body {
  padding: 26px;
}

.service-card h4 {
  font-size: 19px;
  margin-bottom: 12px;
}

.service-card ul {
  list-style: none;
}

.service-card li {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 5px 0;
  padding-left: 18px;
  position: relative;
}

.service-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* 解决方案 */
.solutions-section {
  background: var(--color-bg-2);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.solution-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 28px;
  align-items: center;
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.solution-card:hover {
  background: var(--color-surface-strong);
  border-color: rgba(0, 212, 255, 0.2);
}

.solution-card .sol-img {
  height: 130px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

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

.solution-card h4 {
  font-size: 20px;
  margin-bottom: 10px;
}

.solution-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
}

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

.solution-card .tag {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(0, 212, 255, 0.1);
  color: var(--color-primary);
}

/* 案例 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg-2);
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--shadow-card);
}

.case-card .case-img {
  height: 200px;
  background: linear-gradient(135deg, var(--color-bg-3), var(--color-surface));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 14px;
  position: relative;
  overflow: hidden;
}

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

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

.case-card .case-body {
  padding: 22px;
}

.case-card h4 {
  font-size: 17px;
  margin-bottom: 8px;
}

.case-card p {
  font-size: 13px;
  color: var(--color-text-muted);
}

.case-card .case-tag {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  color: var(--color-gold);
  background: rgba(251, 191, 36, 0.1);
}

/* 资质 */
.qualifications-section {
  background: var(--color-bg-2);
}

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

.qual-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
}

.qual-card:hover {
  border-color: rgba(0, 212, 255, 0.25);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
}

.qual-card .cert-img {
  height: 170px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 18px;
  border: 1px solid var(--color-border);
  background: #fff;
}

.qual-card .cert-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qual-card h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.qual-card .cert-no {
  font-family: "SF Mono", Consolas, monospace;
  font-size: 13px;
  color: var(--color-primary);
  word-break: break-all;
}

.qual-founder {
  margin-top: 30px;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  align-items: center;
  padding: 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.qual-founder .cert-img {
  height: 200px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: #fff;
}

.qual-founder .cert-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qual-founder h4 {
  font-size: 20px;
  margin-bottom: 10px;
}

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

/* 创始人 */
.founder-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-3) 100%);
}

.founder-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  align-items: center;
}

.founder-portrait {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.founder-portrait::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(5,7,10,0.9) 100%);
  z-index: 1;
}

.founder-portrait img {
  width: 100%;
  height: auto;
  min-height: 360px;
  max-height: 520px;
  object-fit: contain;
  background: #fff;
}

.founder-content h3 {
  font-size: 34px;
  margin-bottom: 6px;
}

.founder-content .role {
  font-size: 16px;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.founder-content p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  font-size: 16px;
}

.founder-awards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 28px;
}

.founder-award {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.founder-award i {
  color: var(--color-gold);
  font-size: 18px;
}

.founder-award span {
  font-size: 14px;
}

/* 新闻 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  flex-direction: column;
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.news-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
}

.news-card .date {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

.news-card h4 {
  font-size: 18px;
  margin-bottom: 12px;
}

.news-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  flex: 1;
  margin-bottom: 18px;
}

.news-card .news-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 500;
}

.news-card .news-link:hover {
  text-decoration: underline;
}

/* 联系 */
.contact-section {
  background: var(--color-bg-2);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
}

.contact-info {
  display: grid;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: rgba(0, 212, 255, 0.2);
}

.contact-item .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: rgba(0, 212, 255, 0.1);
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 15px;
  margin-bottom: 6px;
}

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

.contact-qr {
  padding: 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.contact-qr img {
  width: 220px;
  height: 220px;
  margin: 0 auto 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: #fff;
  padding: 10px;
}

.contact-qr h4 {
  font-size: 17px;
  margin-bottom: 6px;
}

.contact-qr p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* 页脚 */
.footer {
  background: #020305;
  border-top: 1px solid var(--color-border);
  padding: 50px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

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

.footer-brand p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 15px;
  margin-bottom: 18px;
  color: var(--color-text);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  font-size: 14px;
  color: var(--color-text-muted);
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
}

/* 滚动动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* 占位提示 */
.placeholder-block {
  background: var(--color-bg-3);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 40px 20px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
}

.placeholder-block strong {
  color: var(--color-text-secondary);
  display: block;
  margin-bottom: 6px;
}

/* 响应式 */
@media (max-width: 1100px) {
  .hero-inner,
  .about-grid,
  .ai-hero,
  .founder-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .hero-phone {
    width: 240px;
  }

  .services-grid,
  .cases-grid,
  .qual-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .solution-card {
    grid-template-columns: 140px 1fr;
  }

  .models-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: calc(100vh - 70px);
    background: rgba(5, 7, 10, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 30px;
    gap: 8px;
    border-left: 1px solid var(--color-border);
    transition: var(--transition);
  }

  .nav.open {
    right: 0;
  }

  .nav a {
    width: 100%;
    padding: 12px 16px;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 12px;
    width: 100%;
    justify-content: center;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding-top: 100px;
    text-align: center;
  }

  .hero-badge {
    margin: 0 auto 24px;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

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

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

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

  .about-images {
    grid-template-columns: 1fr 1fr;
  }

  .about-img:first-child {
    grid-row: span 1;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

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

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

  .services-grid,
  .cases-grid,
  .qual-grid {
    grid-template-columns: 1fr;
  }

  .solution-card {
    grid-template-columns: 1fr;
  }

  .solution-card .sol-img {
    height: 170px;
  }

  .qual-founder {
    grid-template-columns: 1fr;
  }

  .founder-awards {
    grid-template-columns: 1fr;
  }

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

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

  .contact-qr {
    order: -1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .section {
    padding: 80px 0;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 34px;
  }

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

  .ai-features,
  .models-grid {
    grid-template-columns: 1fr;
  }
}