/* ============================================
   凌瑶智数 LingYao Digital · 官方主站样式
   ============================================ */

:root {
  --primary: #0A1F3D;
  --primary-deep: #050F22;
  --accent: #00D4FF;
  --accent-2: #7B61FF;
  --accent-3: #FF8C42;
  --accent-4: #4ADE80;
  --accent-5: #FF5E94;
  --text: #E5EBF2;
  --text-dim: #94A3B8;
  --text-bright: #FFFFFF;
  --border: rgba(0, 212, 255, 0.15);
  --border-hover: rgba(0, 212, 255, 0.4);
  --glass: rgba(10, 31, 61, 0.55);
  --glass-light: rgba(255, 255, 255, 0.04);
  --gradient-primary: linear-gradient(135deg, #00D4FF 0%, #7B61FF 100%);
  --gradient-warm: linear-gradient(135deg, #FF8C42 0%, #FF5E94 100%);
  --gradient-cool: linear-gradient(135deg, #4ADE80 0%, #00D4FF 100%);
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.25);
  --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.3);
  --radius: 14px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  background: var(--primary-deep);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(0, 212, 255, 0.3);
  color: #fff;
}

/* 滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--gradient-primary);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.6);
}

/* 容器 */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ====== 导航栏 ====== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 18px 0;
  background: rgba(10, 31, 61, 0.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.navbar.scrolled {
  padding: 12px 0;
  background: rgba(10, 31, 61, 0.92);
  border-bottom-color: var(--border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-bright);
}

.logo-mark {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-mark svg {
  width: 100%;
  height: 100%;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.logo-en {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}

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

.nav-link {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  border-radius: 8px;
  transition: all var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--text-bright);
  background: var(--glass-light);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: all var(--transition);
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 60%;
}

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

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 212, 255, 0.05);
}

.btn-primary {
  background: var(--gradient-primary);
  border: none;
  color: #fff;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-large {
  padding: 16px 32px;
  font-size: 15px;
  border-radius: 10px;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border-hover);
  color: var(--text-bright);
  padding: 14.5px 32px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(0, 212, 255, 0.05);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
  justify-content: center;
  padding: 14px;
}

.btn-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition);
}

.btn-link:hover {
  gap: 8px;
}

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

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-bright);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ====== Hero ====== */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 160px 32px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

#particleCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(0, 212, 255, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(123, 97, 255, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(255, 140, 66, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1000px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid var(--border-hover);
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.05);
  margin-bottom: 32px;
  animation: fadeInDown 1s var(--transition) both;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-4);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-4);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.hero-badge span:last-child {
  font-size: 13px;
  color: var(--text);
  letter-spacing: 0.3px;
}

.hero-title {
  font-size: clamp(38px, 6.5vw, 76px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 28px;
}

.title-line {
  display: block;
  animation: fadeInUp 0.8s var(--transition) both;
}

.title-line:nth-child(2) { animation-delay: 0.1s; }
.title-line:nth-child(3) { animation-delay: 0.2s; }

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

.gradient-text-light {
  background: linear-gradient(135deg, #FFE0B5 0%, #FF8C42 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.title-accent {
  position: relative;
  display: inline-block;
}

.title-accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 12px;
  background: var(--gradient-primary);
  opacity: 0.25;
  z-index: -1;
  border-radius: 4px;
}

.hero-subtitle {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--text-dim);
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.7;
  animation: fadeInUp 1s var(--transition) 0.3s both;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 80px;
  animation: fadeInUp 1s var(--transition) 0.4s both;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  animation: fadeInUp 1s var(--transition) 0.5s both;
}

.stat-item {
  text-align: center;
  padding: 0 20px;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 50%;
  background: var(--border);
}

.stat-num {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-suffix {
  font-size: 0.5em;
  margin-left: 2px;
  opacity: 0.8;
}

.stat-label {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.3px;
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-dim);
  opacity: 0.6;
}

.scroll-line {
  width: 1px;
  height: 30px;
  background: linear-gradient(to bottom, transparent, var(--accent));
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -30px;
  left: 0;
  width: 100%;
  height: 30px;
  background: var(--accent);
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
  0% { top: -30px; }
  100% { top: 30px; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ====== Section 通用 ====== */
.section {
  padding: 120px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 80px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 18px;
  padding: 6px 14px;
  border: 1px solid var(--border-hover);
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.05);
}

.section-tag.light {
  color: var(--accent-3);
  border-color: rgba(255, 140, 66, 0.4);
  background: rgba(255, 140, 66, 0.08);
}

.section-title {
  font-size: clamp(32px, 4.5vw, 54px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
}

.section-title .title-line {
  display: inline;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* Reveal 动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ====== 关于我们 ====== */
.section-about {
  background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.03) 50%, transparent 100%);
}

.about-grid {
  display: block;
  max-width: 1100px;
  margin: 0 auto;
}

.about-main {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}

.about-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all var(--transition);
}

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

.about-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: 18px;
}

.about-icon svg {
  width: 22px;
  height: 22px;
}

.about-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--text-bright);
}

.about-card p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

.about-numbers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 24px;
}

.number-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all var(--transition);
}

.number-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.number-value {
  font-size: 30px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 6px;
  line-height: 1;
}

.number-value span {
  font-size: 0.55em;
  margin-left: 2px;
}

.number-desc {
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.5;
}

.about-quote {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(123, 97, 255, 0.05) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
}

.quote-mark {
  width: 30px;
  height: 30px;
  color: var(--accent);
  opacity: 0.4;
  margin-bottom: 12px;
}

.about-quote p {
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 14px;
}

.quote-author {
  font-size: 12px;
  color: var(--text-dim);
  font-style: italic;
}

/* ====== 产品矩阵 ====== */
.product-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 50px;
}

.tab-btn {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  text-align: left;
  position: relative;
  overflow: hidden;
}

.tab-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 0;
}

.tab-btn.active::before,
.tab-btn:hover::before {
  opacity: 0.1;
}

.tab-btn.active {
  border-color: var(--accent);
  background: rgba(0, 212, 255, 0.08);
}

.tab-btn > * {
  position: relative;
  z-index: 1;
}

.tab-num {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 1.5px;
  font-weight: 700;
  margin-bottom: 8px;
}

.tab-btn.active .tab-num {
  color: var(--accent);
}

.tab-name {
  display: block;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.tab-desc {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
}

.product-detail {
  display: none;
  animation: fadeInUp 0.5s var(--transition);
}

.product-detail.active {
  display: block;
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
}

.product-header {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}

.product-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--c1) 0%, var(--c2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.product-icon svg {
  width: 28px;
  height: 28px;
}

.product-en {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 1.5px;
  margin-bottom: 4px;
}

.product-titles h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-bright);
  line-height: 1.2;
}

.product-tagline {
  display: inline-block;
  margin-top: 8px;
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, rgba(255, 140, 66, 0.18) 0%, rgba(255, 94, 148, 0.18) 100%);
  border: 1px solid rgba(255, 140, 66, 0.4);
  border-radius: 999px;
  color: #FFB47A;
  text-shadow: 0 0 12px rgba(255, 140, 66, 0.3);
}

.product-desc {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 28px;
}

.product-features {
  margin-bottom: 32px;
}

.feature-item {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

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

.feature-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.feature-item strong {
  display: block;
  font-size: 15px;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.feature-item p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

.product-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Dashboard Mockup */
.dashboard-mockup {
  background: linear-gradient(135deg, #0F2347 0%, #0A1A33 100%);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  transform: perspective(1200px) rotateY(-3deg) rotateX(2deg);
  transition: transform 0.5s ease;
}

.dashboard-mockup:hover {
  transform: perspective(1200px) rotateY(0deg) rotateX(0deg);
}

.mockup-header {
  background: rgba(0, 0, 0, 0.2);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--border);
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

.mockup-dots span:nth-child(1) { background: #FF5F57; }
.mockup-dots span:nth-child(2) { background: #FFBD2E; }
.mockup-dots span:nth-child(3) { background: #28CA42; }

.mockup-title {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.mockup-content {
  padding: 24px;
}

.mockup-kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.kpi-box {
  background: rgba(0, 212, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

.kpi-label {
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.kpi-value {
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 6px;
}

.kpi-trend {
  font-size: 10px;
  color: var(--accent-4);
  font-weight: 600;
}

.mockup-chart {
  height: 140px;
  position: relative;
}

/* ====== 解决方案 ====== */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.solution-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  position: relative;
  transition: all var(--transition);
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--transition);
}

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

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

.solution-num {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 16px;
  opacity: 0.6;
}

.solution-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(123, 97, 255, 0.15) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}

.solution-icon svg {
  width: 24px;
  height: 24px;
}

.solution-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 12px;
}

.solution-card > p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 18px;
}

.solution-list {
  list-style: none;
  margin-bottom: 20px;
}

.solution-list li {
  font-size: 13px;
  color: var(--text);
  padding: 6px 0 6px 22px;
  position: relative;
  line-height: 1.5;
}

.solution-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 12px;
  height: 2px;
  background: var(--gradient-primary);
}

.solution-tag {
  display: inline-block;
  font-size: 11px;
  padding: 6px 12px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--accent);
  font-weight: 500;
}

/* ====== 技术优势 ====== */
.section-advantages {
  background: linear-gradient(180deg, transparent 0%, rgba(123, 97, 255, 0.03) 50%, transparent 100%);
}

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

.advantage-item {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all var(--transition);
  text-align: left;
}

.advantage-item:hover {
  border-color: var(--border-hover);
  background: rgba(0, 212, 255, 0.05);
  transform: translateY(-4px);
}

.advantage-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(123, 97, 255, 0.15) 100%);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}

.advantage-icon svg {
  width: 24px;
  height: 24px;
}

.advantage-item h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 10px;
}

.advantage-item p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ====== 客户案例 ====== */
.cases-showcase {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.08) 0%, rgba(123, 97, 255, 0.08) 100%);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  padding: 50px;
  position: relative;
  overflow: hidden;
}

.cases-showcase::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

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

.case-brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 32px;
}

.brand-logo {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-bright);
}

.brand-tag {
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 1px;
}

.case-quote {
  font-size: 20px;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 800px;
}

.case-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.author-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-bright);
}

.author-title {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 2px;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.metric {
  text-align: left;
}

.metric-value {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 6px;
  line-height: 1;
}

.metric-value span {
  font-size: 0.7em;
  margin: 0 1px;
}

/* ── 真实场景案例 ─────── */
.case-scenarios {
  margin-top: 80px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.scenario-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 32px;
  text-align: center;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.scenario-card {
  background: var(--glass-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.scenario-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
}

.scenario-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.12);
}

.scenario-card:hover::before {
  opacity: 1;
}

.scenario-icon {
  font-size: 32px;
  margin-bottom: 12px;
  display: block;
}

.scenario-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 10px;
}

.scenario-card p {
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 8px;
}

.scenario-card p strong {
  color: var(--accent);
  font-weight: 700;
}

.scenario-result {
  background: rgba(0, 212, 255, 0.06);
  border-left: 2px solid var(--accent);
  padding: 8px 12px !important;
  border-radius: 4px;
  margin: 10px 0 !important;
  font-size: 13px !important;
}

.scenario-tip {
  font-size: 12px !important;
  color: var(--text-dim) !important;
  font-style: italic;
  margin-top: 8px !important;
}

.metric-label {
  font-size: 13px;
  color: var(--text-dim);
}

/* ====== 试用申请 ====== */
.section-trial {
  padding: 100px 0;
}

.trial-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #0A2342 0%, #0F1B3D 100%);
  border: 1px solid var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.trial-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(255, 140, 66, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.trial-content {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  padding: 60px;
}

.trial-left .section-tag {
  margin-bottom: 24px;
}

.trial-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.trial-title span {
  display: block;
}

.trial-desc {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 40px;
}

.trial-perks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.perk {
  display: flex;
  gap: 14px;
}

.perk-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.perk strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.perk p {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.5;
}

.trial-form {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(10px);
}

.trial-form h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-field {
  margin-bottom: 18px;
}

.form-field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}

.form-field label span {
  color: var(--accent-5);
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text-bright);
  font-family: inherit;
  transition: all var(--transition);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(0, 212, 255, 0.05);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--text-dim);
  opacity: 0.6;
}

.form-field textarea {
  resize: vertical;
  min-height: 80px;
}

.checkbox-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 4px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all var(--transition);
}

.checkbox-item:hover {
  border-color: var(--border-hover);
}

.checkbox-item input {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
}

/* V2.0.78.5 · 产品 checkbox 锁定 / 置灰 */
.checkbox-item.is-locked {
  cursor: not-allowed;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.10), rgba(123, 97, 255, 0.08));
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.15) inset;
}
.checkbox-item.is-locked span {
  color: var(--text-bright);
  font-weight: 600;
}
.checkbox-item.is-locked::after {
  content: '默认';
  margin-left: auto;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--accent);
  padding: 2px 8px;
  background: rgba(0, 212, 255, 0.12);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 999px;
}
.checkbox-item.is-locked:hover {
  border-color: rgba(0, 212, 255, 0.4);
}
.checkbox-item.is-disabled {
  cursor: not-allowed;
  opacity: 0.4;
  background: rgba(255, 255, 255, 0.02);
  border-style: dashed;
}
.checkbox-item.is-disabled:hover {
  border-color: var(--border);
}
.checkbox-item.is-disabled span {
  color: var(--text-dim);
  text-decoration: line-through;
  text-decoration-color: rgba(148, 163, 184, 0.4);
}
.checkbox-item.is-disabled input {
  cursor: not-allowed;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 16px 0 20px;
}

.form-check input {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
  margin-top: 3px;
}

.form-check label {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.5;
}

.form-check a {
  color: var(--accent);
  text-decoration: none;
}

.form-hint {
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 16px;
}

.form-hint strong {
  color: var(--accent-3);
}

/* ====== 联系我们 ====== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.contact-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  text-align: center;
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--border-hover);
  background: rgba(0, 212, 255, 0.04);
  transform: translateY(-4px);
}

.contact-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(123, 97, 255, 0.15) 100%);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin: 0 auto 18px;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
}

.contact-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 10px;
}

.contact-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
  word-break: break-all;
}

.contact-desc {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.5;
}

.qr-placeholder {
  margin-top: 14px;
  display: flex;
  justify-content: center;
}

.qr-pattern {
  width: 80px;
  height: 80px;
  background: #fff;
  border-radius: 6px;
  padding: 8px;
  position: relative;
}

.qr-corner {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 3px solid #000;
}

.qr-corner.tl { top: 8px; left: 8px; border-right: none; border-bottom: none; }
.qr-corner.tr { top: 8px; right: 8px; border-left: none; border-bottom: none; }
.qr-corner.bl { bottom: 8px; left: 8px; border-right: none; border-top: none; }

.qr-dots {
  position: absolute;
  top: 32px;
  left: 32px;
  width: 32px;
  height: 32px;
  background-image:
    radial-gradient(circle, #000 2px, transparent 2.5px),
    radial-gradient(circle, #000 2px, transparent 2.5px);
  background-size: 6px 6px;
  background-position: 0 0, 3px 3px;
}

/* ====== 页脚 ====== */
.footer {
  background: var(--primary-deep);
  border-top: 1px solid var(--border);
  padding: 80px 0 30px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 3fr;
  gap: 60px;
  padding-bottom: 50px;
  border-bottom: 1px solid var(--border);
}

.footer-brand .nav-logo {
  margin-bottom: 20px;
}

.footer-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--glass);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  transition: all var(--transition);
  text-decoration: none;
}

.social-link svg {
  width: 16px;
  height: 16px;
}

.social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.footer-col h5 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  text-decoration: none;
  padding: 5px 0;
  transition: all var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
  transform: translateX(3px);
}

.footer-bottom {
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 12px;
  color: var(--text-dim);
}

.footer-legal {
  display: flex;
  gap: 18px;
}

.footer-legal a {
  font-size: 12px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-legal a:hover {
  color: var(--accent);
}

/* ====== 弹窗 ====== */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.show {
  display: flex;
  animation: fadeIn 0.3s var(--transition);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  max-width: 460px;
  width: 100%;
  background: linear-gradient(135deg, #0F2347 0%, #0A1A33 100%);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  padding: 40px;
  animation: modalIn 0.4s var(--transition);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-large {
  max-width: 600px;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--glass);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 22px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.modal-close:hover {
  background: var(--accent-5);
  border-color: var(--accent-5);
  color: #fff;
}

.modal-header {
  margin-bottom: 24px;
  text-align: center;
}

.modal-header h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 8px;
}

.modal-header p {
  font-size: 13px;
  color: var(--text-dim);
}

.modal-form .form-field {
  margin-bottom: 16px;
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  font-size: 12px;
}

.form-options label {
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

.form-options input {
  accent-color: var(--accent);
}

.forgot-link {
  color: var(--accent);
  text-decoration: none;
}

.form-divider {
  text-align: center;
  margin: 18px 0;
  position: relative;
  font-size: 12px;
  color: var(--text-dim);
}

.form-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border);
}

.form-divider span {
  background: #0F2347;
  padding: 0 12px;
  position: relative;
}

.social-login {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.social-btn {
  background: var(--glass);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px;
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.social-btn:hover {
  border-color: var(--accent);
  background: rgba(0, 212, 255, 0.05);
}

.modal-foot {
  text-align: center;
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 16px;
}

.modal-foot a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

/* ====== Toast ====== */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: linear-gradient(135deg, rgba(74, 222, 128, 0.15) 0%, rgba(0, 212, 255, 0.15) 100%);
  border: 1px solid var(--accent-4);
  border-radius: var(--radius);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3000;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s var(--transition);
  pointer-events: none;
  backdrop-filter: blur(20px);
  box-shadow: 0 10px 40px rgba(74, 222, 128, 0.2);
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-4);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}

.toast-msg {
  font-size: 14px;
  color: var(--text-bright);
  font-weight: 500;
}

/* ====== 响应式 ====== */
@media (max-width: 1024px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(10, 31, 61, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-150%);
    transition: transform 0.3s var(--transition);
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .nav-toggle {
    display: flex;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .product-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .dashboard-mockup {
    transform: none;
  }

  .solutions-grid,
  .contact-grid,
  .case-metrics,
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .trial-content {
    grid-template-columns: 1fr;
    padding: 40px;
    gap: 40px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .stat-item:nth-child(2)::after {
    display: none;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 20px;
  }

  .hero {
    padding: 130px 20px 60px;
  }

  .section {
    padding: 80px 0;
  }

  .section-header {
    margin-bottom: 50px;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 24px 0;
  }

  .product-tabs {
    grid-template-columns: 1fr;
  }

  .solutions-grid,
  .contact-grid,
  .case-metrics,
  .advantages-grid {
    grid-template-columns: 1fr;
  }

  .trial-perks {
    grid-template-columns: 1fr;
  }

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

  .checkbox-group {
    grid-template-columns: 1fr;
  }

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

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

  .case-quote {
    font-size: 16px;
  }

  .cases-showcase {
    padding: 30px 24px;
  }

  .nav-actions .btn-ghost {
    display: none;
  }
}
/* ════════════════════════════════════════════════════════════
   凌瑶智数 · 管理后台增强（KPI 卡片 + 改进 toast）
   ════════════════════════════════════════════════════════════ */

/* KPI 统计卡片网格 */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.kpi-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--gradient-primary);
  opacity: 0.6;
}
.kpi-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}
.kpi-card:nth-child(2)::before { background: var(--gradient-warm); }
.kpi-card:nth-child(3)::before { background: var(--gradient-cool); }
.kpi-card:nth-child(4)::before { background: linear-gradient(135deg, #7B61FF 0%, #FF5E94 100%); }
.kpi-label {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.kpi-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-bright);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.kpi-hint {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 6px;
}
@media (max-width: 900px) {
  .kpi-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 改进 toast：右下角浮层 + 滑入动画 */
.toast {
  position: fixed;
  top: auto; left: auto;
  right: 24px; bottom: 24px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 14px 20px;
  border-radius: var(--radius);
  color: var(--text-bright);
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow-card);
  opacity: 0;
  transform: translateX(120%);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 9999;
  pointer-events: none;
  max-width: 360px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.toast.show {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}
.toast.success { border-left-color: var(--accent-4); }
.toast.error   { border-left-color: var(--accent-5); }
.toast.info    { border-left-color: var(--accent); }
.toast .toast-icon {
  font-size: 16px;
  line-height: 1;
}
.toast .toast-msg { line-height: 1.4; }

/* ═══════════════════════ V2.0.73 · 产品开发中角标 ═══════════════════════ */
.product-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.3px;
  vertical-align: middle;
  white-space: nowrap;
}
.product-badge.coming-soon {
  background: linear-gradient(135deg, rgba(255, 140, 66, 0.15), rgba(255, 94, 148, 0.15));
  color: #FF8C42;
  border: 1px solid rgba(255, 140, 66, 0.35);
}

/* ═══════════════════════ V2.0.78.2 · 首页 GEO 深度改造 ═══════════════════════ */

/* ── .section-geo 主区容器 ── */
.section-geo {
  position: relative;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(0, 212, 255, 0.08), transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(123, 97, 255, 0.08), transparent 50%),
    var(--bg-section);
}

/* ── 5 特性行布局 ── */
.geo-features {
  margin-top: 56px;
  display: flex;
  flex-direction: column;
  gap: 96px;
}
.geo-feature-row {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
}
.geo-feature-row.reverse {
  grid-template-columns: 1fr 1.15fr;
}
.geo-feature-row.reverse .geo-feature-visual {
  order: 2;
}
.geo-feature-row.reverse .geo-feature-text {
  order: 1;
}
.feature-num {
  font-family: 'Inter', sans-serif;
  font-size: 56px;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.85;
  margin-bottom: 12px;
}
.feature-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 14px;
  line-height: 1.3;
}
.feature-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
  margin-bottom: 18px;
}
.feature-points {
  list-style: none;
  padding: 0;
  margin: 0;
}
.feature-points li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.6;
}
.feature-points li::before {
  content: '▸';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ── mockup 框（与 dashboard-mockup 视觉对齐） ── */
.mockup-frame {
  background: linear-gradient(135deg, rgba(10, 31, 61, 0.85), rgba(22, 50, 92, 0.75));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}
.mockup-frame:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(0, 212, 255, 0.18);
}

/* ① AI 平台九宫格 */
.ai-platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.ai-platform {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.18);
  border-radius: 8px;
  font-size: 12px;
  color: var(--text);
  transition: all 0.25s ease;
}
.ai-platform.active {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(123, 97, 255, 0.10));
  border-color: rgba(0, 212, 255, 0.4);
}
.ai-platform .ai-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
  color: #fff;
  letter-spacing: -0.5px;
  font-family: 'Inter', sans-serif;
  flex-shrink: 0;
}
/* 8 个 AI 平台首字母渐变（V2.0.78.3 · 不照搬品牌 logo 避免商标风险）*/
.ai-icon-ds    { background: linear-gradient(135deg, #4D6BFE, #1A2B6B); }   /* DeepSeek 深蓝 */
.ai-icon-kimi  { background: linear-gradient(135deg, #1B1F26, #4A5568); }   /* Kimi 炭黑 */
.ai-icon-yb    { background: linear-gradient(135deg, #0099FF, #0055B8); }   /* 元宝 蓝青 */
.ai-icon-doubao{ background: linear-gradient(135deg, #5E72E4, #825EE4); }   /* 豆包 紫蓝 */
.ai-icon-qwen  { background: linear-gradient(135deg, #FF6A00, #C2410C); }   /* 千问 橙红 */
.ai-icon-wxy   { background: linear-gradient(135deg, #2978FF, #1D4ED8); }   /* 文心一言 蓝 */
.ai-icon-zp    { background: linear-gradient(135deg, #4A6B3A, #2D4A22); }   /* 智谱 绿 */
.ai-icon-yy    { background: linear-gradient(135deg, #7B61FF, #4C1D95); }   /* Minimax 紫 */
.mockup-scan-line {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(0, 212, 255, 0.05);
  border-radius: 8px;
  font-size: 12px;
  color: var(--text-dim);
}
.scan-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-4);
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.7);
  animation: pulse-dot 1.6s infinite;
}
@keyframes pulse-dot {
  0%   { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.7); }
  70%  { box-shadow: 0 0 0 10px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

/* ② 公平验证徽章 + 表格 */
.fair-badge-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.fair-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 12px 8px;
  background: rgba(123, 97, 255, 0.06);
  border: 1px solid rgba(123, 97, 255, 0.2);
  border-radius: 10px;
  gap: 4px;
}
.fair-badge .badge-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(123, 97, 255, 0.18), rgba(0, 212, 255, 0.12));
  border: 1px solid rgba(123, 97, 255, 0.3);
  color: #B4A6FF;
  font-size: 0;
  margin-bottom: 4px;
}
.fair-badge .badge-mark svg {
  width: 18px;
  height: 18px;
  stroke: #C4B8FF;
}
.fair-badge strong {
  font-size: 13px;
  color: var(--text-bright);
  font-weight: 600;
}
.fair-badge span:last-child {
  font-size: 11px;
  color: var(--text-dim);
}
.multi-platform-table {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.table-row {
  display: grid;
  grid-template-columns: 1.2fr 0.7fr 0.7fr 1fr;
  padding: 8px 14px;
  font-size: 12px;
  color: var(--text);
  align-items: center;
}
.table-row.header {
  background: rgba(0, 212, 255, 0.06);
  color: var(--text-dim);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.5px;
}
.table-row + .table-row {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}
.table-row .pos {
  color: var(--accent-4);
  font-weight: 600;
}

/* ③ 5 维雷达图 */
.score-radar-wrap {
  position: relative;
  height: 220px;
  margin-bottom: 16px;
}
.score-radar-wrap canvas {
  width: 100% !important;
  height: 100% !important;
}
.score-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
}
.score-num {
  font-family: 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.score-label {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
  margin-top: 4px;
}
.five-dim-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}
.dim-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 4px;
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.12);
  border-radius: 8px;
}
.dim-label {
  font-size: 11px;
  color: var(--text-dim);
}
.dim-val {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
}

/* ④ 跨平台对比柱 */
.cross-platform-bars {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cp-row {
  display: grid;
  grid-template-columns: 80px 1fr 32px;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text);
}
.cp-name {
  color: var(--text-dim);
}
.cp-bar {
  height: 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
}
.cp-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.8s ease;
}
.cp-score {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  color: var(--text-bright);
  text-align: right;
}

/* ⑤ 行动卡片 */
.action-cards {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.action-card {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px 14px;
  align-items: center;
}
.action-card.high {
  border-left: 3px solid #FF5F57;
}
.action-card.mid {
  border-left: 3px solid #FFBD2E;
}
.action-card.low {
  border-left: 3px solid var(--accent-4);
}
.action-priority {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.action-card.high .action-priority {
  background: rgba(255, 95, 87, 0.15);
  color: #FF8A85;
}
.action-card.mid .action-priority {
  background: rgba(255, 189, 46, 0.15);
  color: #FFCB66;
}
.action-card.low .action-priority {
  background: rgba(74, 222, 128, 0.15);
  color: #6EE7A8;
}
.action-title {
  font-size: 13px;
  color: var(--text-bright);
  line-height: 1.5;
}
.action-impact {
  font-size: 12px;
  color: var(--accent-4);
  font-weight: 600;
  text-align: right;
}
.action-tags {
  grid-column: 2 / -1;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.action-tags span {
  font-size: 10px;
  padding: 2px 8px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.18);
  border-radius: 999px;
  color: var(--text-dim);
}

/* ── 数据大屏 ── */
.geo-data-screen {
  margin-top: 100px;
  padding: 40px;
  background:
    linear-gradient(135deg, rgba(10, 31, 61, 0.92), rgba(22, 50, 92, 0.88)),
    radial-gradient(ellipse at top left, rgba(0, 212, 255, 0.18), transparent 60%);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 20px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  position: relative;
  overflow: hidden;
}
.geo-data-screen::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.6), transparent);
}
.screen-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}
.screen-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-bright);
}
.screen-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.screen-kpi {
  padding: 22px;
  background: rgba(0, 212, 255, 0.04);
  border: 1px solid rgba(0, 212, 255, 0.18);
  border-radius: 14px;
}
.screen-kpi.big {
  grid-column: span 1;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(123, 97, 255, 0.10));
  border-color: rgba(0, 212, 255, 0.35);
}
.screen-kpi-label {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}
.screen-kpi-value {
  font-family: 'Inter', sans-serif;
  font-size: 36px;
  font-weight: 800;
  color: var(--text-bright);
  line-height: 1;
}
.screen-kpi-value .suffix {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  margin-left: 4px;
}
.screen-kpi-trend {
  font-size: 12px;
  margin-top: 8px;
  color: var(--text-dim);
}
.screen-kpi-trend.up {
  color: var(--accent-4);
  font-weight: 600;
}
.screen-chart {
  grid-column: span 4;
  padding: 22px;
  background: rgba(0, 212, 255, 0.04);
  border: 1px solid rgba(0, 212, 255, 0.18);
  border-radius: 14px;
  height: 220px;
  position: relative;
}
.chart-title {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.3px;
  margin-bottom: 12px;
}
.screen-chart canvas {
  width: 100% !important;
  height: calc(100% - 24px) !important;
}

/* ── CTA Bar ── */
.geo-cta-bar {
  margin-top: 56px;
  padding: 32px 40px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.10), rgba(123, 97, 255, 0.10));
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.cta-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 6px;
}
.cta-subtitle {
  font-size: 13px;
  color: var(--text-dim);
}
.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.cta-actions .btn-outline {
  border-color: rgba(0, 212, 255, 0.4);
  color: var(--text-bright);
  text-decoration: none;
}
.cta-actions .btn-outline:hover {
  background: rgba(0, 212, 255, 0.10);
}

/* ── 敬请期待（HPD/SCOUT/MEDPPT）── */
.coming-soon-section {
  margin-top: 100px;
  padding-top: 56px;
  border-top: 1px solid var(--border);
}
.coming-soon-header {
  text-align: center;
  margin-bottom: 36px;
}
.coming-soon-tag {
  display: inline-block;
  padding: 6px 16px;
  background: linear-gradient(135deg, rgba(255, 140, 66, 0.12), rgba(255, 94, 148, 0.12));
  border: 1px solid rgba(255, 140, 66, 0.3);
  border-radius: 999px;
  color: #FF8C42;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.coming-soon-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 10px;
}
.coming-soon-subtitle {
  font-size: 14px;
  color: var(--text-dim);
}
.coming-soon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.coming-soon-card {
  position: relative;
  padding: 32px 26px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  overflow: hidden;
}
.coming-soon-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #FF8C42, #FF5E94);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--transition);
}
.coming-soon-card:hover::before {
  transform: scaleX(1);
}
.coming-soon-card:hover {
  border-color: rgba(255, 140, 66, 0.35);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(255, 140, 66, 0.12);
}
.cs-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(255, 140, 66, 0.15), rgba(255, 94, 148, 0.15));
  border: 1px solid rgba(255, 140, 66, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.cs-icon svg {
  width: 26px;
  height: 26px;
  stroke: #FF8C42;
}
.cs-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 4px;
}
.cs-name-en {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}
.cs-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.65;
  margin-bottom: 16px;
}
.cs-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.cs-foot .product-badge {
  margin-left: 0;
}
.cs-target {
  font-size: 11px;
  color: var(--text-dim);
}

/* ── 响应式 ── */
@media (max-width: 992px) {
  .geo-feature-row,
  .geo-feature-row.reverse {
    grid-template-columns: 1fr;
  }
  .geo-feature-row.reverse .geo-feature-visual { order: 1; }
  .geo-feature-row.reverse .geo-feature-text  { order: 2; }
  .ai-platform-grid { grid-template-columns: repeat(2, 1fr); }
  .screen-grid { grid-template-columns: repeat(2, 1fr); }
  .coming-soon-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .geo-features { gap: 64px; }
  .geo-data-screen { padding: 24px; }
  .screen-grid { grid-template-columns: 1fr; }
  .fair-badge-row { grid-template-columns: 1fr; }
  .five-dim-row { grid-template-columns: repeat(2, 1fr); }
}