/* ===== 落地页浮动导航 — 毛玻璃胶囊 ===== */
.landing-nav {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 100;
  transition:
    top 0.3s var(--ease-out-expo),
    box-shadow 0.3s ease,
    background 0.3s ease;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 28px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}
.landing-nav.scrolled .nav-inner {
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.88);
  border-color: rgba(0, 20, 80, 0.08);
}
.nav-logo {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  letter-spacing: -0.03em;
}
.nav-logo .icon {
  width: 22px;
  height: 22px;
  color: var(--primary);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.nav-links a:not(.btn) {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--duration-fast) ease;
}
.nav-links a:not(.btn):hover {
  color: var(--primary);
}

/* ===== Hero 区域 — 渐变网格背景 ===== */
.hero {
  position: relative;
  padding: 160px 0 100px;
  text-align: center;
  background: var(--bg);
  overflow: hidden;
}

/* 渐变光晕装饰 */
.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background:
    radial-gradient(ellipse 50% 60% at 30% 40%, rgba(0, 102, 255, 0.1) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 70% 30%, rgba(108, 92, 231, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 35% 40% at 50% 70%, rgba(168, 85, 247, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* 点阵网格叠加 */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(0, 20, 80, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black, transparent);
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-xl);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-sm);
}
.hero-badge .icon {
  color: var(--accent);
}

.hero h1 {
  font-size: var(--text-4xl);
  font-weight: 900;
  color: var(--text);
  line-height: 1.15;
  margin-bottom: var(--space-xl);
  letter-spacing: -0.04em;
}
.hero h1 em {
  font-style: normal;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.02em;
  padding: 0 0.04em;
}

/* 副标题第一层：痛点引导句，最醒目 */
.hero-lead {
  font-size: var(--text-xl);
  color: var(--text);
  font-weight: 600;
  max-width: 640px;
  margin: 0 auto var(--space-md);
  line-height: 1.7;
}

/* 副标题第二层：价值描述，辅助阅读 */
.hero-desc {
  font-size: var(--text-base);
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto var(--space-lg);
  line-height: 1.8;
}

/* 副标题第三层：亮点标签，视觉锚点 */
.hero-highlight {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary);
  background: rgba(67, 56, 202, 0.06);
  border: 1px solid rgba(67, 56, 202, 0.12);
  padding: 8px 20px;
  border-radius: 999px;
  margin-bottom: var(--space-2xl);
}
.hero-highlight-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

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

/* 统计卡片 — 毛玻璃 */
.hero-stats {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  margin-top: var(--space-3xl);
  flex-wrap: wrap;
}
.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 20px 32px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--duration-base) var(--ease-out-expo),
    box-shadow var(--duration-base) var(--ease-out-expo);
}
.hero-stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.hero-stat .icon {
  color: var(--primary-light);
  margin-bottom: 4px;
}
.hero-stat strong {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat span {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 500;
}

/* ===== 通用标题 ===== */
.section-title {
  text-align: center;
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--text);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.03em;
}
.section-subtitle {
  text-align: center;
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ===== 痛点描述区域 ===== */
.pain-section {
  padding: var(--space-4xl) 0 var(--space-3xl);
  position: relative;
}
.pain-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
.pain-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--duration-base) var(--ease-out-expo);
}
.pain-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: rgba(0, 102, 255, 0.12);
}
.pain-card h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.pain-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== 功能介绍区域 — 现代卡片网格 ===== */
.features-section {
  padding: var(--space-3xl) 0 var(--space-4xl);
  position: relative;
  background: var(--bg-alt);
}

/* 功能区域装饰背景 */
.features-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(0, 20, 80, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
}

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

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all var(--duration-slow) var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}

/* 卡片顶部装饰渐变条 */
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--duration-base) ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: rgba(0, 102, 255, 0.1);
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-card .icon-box {
  margin: 0 auto var(--space-md);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
}
.feature-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}
.feature-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}
.feature-tag {
  display: inline-block;
  margin-top: var(--space-md);
  padding: 5px 16px;
  background: var(--primary-bg);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  border: 1px solid rgba(0, 102, 255, 0.1);
}

/* ===== 三步流程区域 ===== */
.steps-section {
  padding: var(--space-3xl) 0 var(--space-4xl);
  background: var(--bg-alt);
  position: relative;
}
.steps-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.step-card {
  flex: 1;
  min-width: 200px;
  max-width: 280px;
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all var(--duration-base) var(--ease-out-expo);
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 102, 255, 0.12);
}
.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  font-size: var(--text-base);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.25);
}
.step-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
}
.step-icon-wrap .icon {
  width: 24px;
  height: 24px;
  color: var(--primary);
}
.step-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--space-xs);
}
.step-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}
.step-connector {
  display: none;
  color: var(--text-muted);
}
.step-connector .icon {
  width: 20px;
  height: 20px;
}

/* ===== 效果对比区域 ===== */
.demo-section {
  padding: var(--space-3xl) 0 var(--space-4xl);
  background: var(--bg);
  position: relative;
}
.demo-comparison {
  display: flex;
  gap: var(--space-lg);
  align-items: stretch;
  flex-wrap: wrap;
}
.demo-card {
  flex: 1;
  min-width: 280px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1.5px solid var(--border);
  background: var(--bg-card);
  transition: all var(--duration-base) var(--ease-out-expo);
}
.demo-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.demo-before { border-color: rgba(239, 68, 68, 0.2); }
.demo-after {
  border-color: transparent;
  background: linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
              var(--gradient-primary) border-box;
  border: 2px solid transparent;
  box-shadow: var(--shadow-lg), 0 0 30px rgba(0, 102, 255, 0.06);
}
.demo-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: var(--text-sm);
  font-weight: 700;
}
.demo-label-before {
  background: rgba(239, 68, 68, 0.06);
  color: var(--danger);
}
.demo-label-after {
  background: var(--primary-bg);
  color: var(--primary);
}
.demo-content {
  padding: var(--space-lg) var(--space-lg) var(--space-md);
}
.demo-input-label,
.demo-output-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.demo-input-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  padding: 12px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}
.demo-divider {
  height: 1px;
  background: var(--border);
  margin: var(--space-md) 0;
}
.demo-output-text {
  font-size: var(--text-sm);
  color: var(--text);
  line-height: 1.7;
  padding: 12px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.demo-after .demo-output-text {
  background: rgba(0, 102, 255, 0.03);
  border: 1px solid rgba(0, 102, 255, 0.08);
}
.demo-verdict {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: var(--space-md);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 12px;
  font-weight: 600;
}
.demo-verdict-bad {
  background: rgba(239, 68, 68, 0.06);
  color: var(--danger);
}
.demo-verdict-good {
  background: rgba(16, 185, 129, 0.06);
  color: var(--success);
}
.demo-verdict .icon {
  flex-shrink: 0;
}
.demo-vs {
  display: none;
  font-size: var(--text-xl);
  font-weight: 900;
  color: var(--text-muted);
  align-self: center;
}

/* ===== VIP 权益区域 ===== */
.vip-section {
  padding: var(--space-4xl) 0;
  background: var(--bg-alt);
  position: relative;
}
.vip-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
.vip-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--duration-base) var(--ease-out-expo);
}
.vip-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: rgba(0, 102, 255, 0.12);
}
.vip-card-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.vip-card-icon .icon {
  width: 22px;
  height: 22px;
  color: #fff;
}
.vip-card h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.vip-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== 竞品对比区域 ===== */
.compare-section {
  padding: var(--space-3xl) 0 var(--space-4xl);
  background: var(--bg-alt);
  position: relative;
}
.compare-table-wrap {
  max-width: 800px;
  margin: 0 auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--text-sm);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.compare-table thead th {
  padding: 18px 16px;
  font-weight: 700;
  color: var(--text);
  background: var(--bg-alt);
  border-bottom: 2px solid var(--border);
  text-align: center;
  font-size: var(--text-sm);
}
.compare-table tbody td {
  padding: 14px 16px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: middle;
}
.compare-table tbody tr:last-child td {
  border-bottom: none;
}
.compare-label {
  text-align: left !important;
  font-weight: 600;
  color: var(--text) !important;
  white-space: nowrap;
}
.compare-highlight {
  background: rgba(0, 102, 255, 0.03) !important;
  color: var(--primary) !important;
}
.compare-highlight strong {
  color: var(--primary);
  font-weight: 800;
}
.compare-badge {
  display: inline-block;
  background: var(--gradient-primary);
  color: #fff;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
}
.compare-note {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: #e85d04;
  margin-top: 2px;
}
.compare-weak {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: #b0b0b0;
  margin-top: 2px;
}
.compare-table .icon {
  width: 18px;
  height: 18px;
}
.compare-highlight .icon {
  color: var(--success);
}
.compare-table tbody td:not(.compare-highlight):not(.compare-label) .icon {
  color: var(--text-muted);
  opacity: 0.5;
}
.compare-disclaimer {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: var(--space-md);
  font-style: italic;
}

/* ===== 数据证言区域 ===== */
.proof-section {
  padding: var(--space-4xl) 0;
  background: var(--bg);
  position: relative;
}
.proof-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
}
.proof-card {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-base) var(--ease-out-expo);
}
.proof-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: rgba(0, 102, 255, 0.12);
}
.proof-number {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  font-size: 44px;
  font-weight: 900;
  letter-spacing: -0.04em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 12px;
}
.proof-number span {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0;
}
.proof-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 场景卡片 */
.proof-scenarios-title {
  text-align: center;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--space-lg);
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
.scenario-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-sm);
  padding: var(--space-xl) var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  transition: all var(--duration-base) var(--ease-out-expo);
}
.scenario-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: rgba(0, 102, 255, 0.12);
}
.scenario-emoji-wrap {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: var(--radius-lg);
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-xs);
}
.scenario-emoji-wrap .icon {
  width: 24px;
  height: 24px;
  color: var(--primary);
}
.scenario-card h4 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}
.scenario-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* CTA 增强 */
.cta-desc {
  font-size: var(--text-lg);
  opacity: 0.9;
  margin-bottom: var(--space-lg);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.cta-actions {
  margin-bottom: var(--space-md);
}
.cta-note {
  font-size: var(--text-sm);
  opacity: 0.6;
  font-weight: 400;
}

/* ===== 定价区域 ===== */
.pricing-section {
  padding: var(--space-4xl) 0;
  position: relative;
  text-align: center;
}
.pricing-section .section-subtitle {
  margin-bottom: var(--space-xl);
}

/* 早鸟倒计时 */
.countdown-bar {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 20px;
  background: transparent;
  border: 1px solid rgba(0, 102, 255, 0.12);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-2xl);
}
.countdown-bar > .icon {
  color: var(--primary);
  flex-shrink: 0;
  width: 15px;
  height: 15px;
}
.countdown-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}
.countdown-blocks {
  display: flex;
  align-items: center;
  gap: 4px;
}
.countdown-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}
.countdown-num {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 28px;
  padding: 0 4px;
  background: none;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 800;
  color: var(--primary);
  text-align: center;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.countdown-txt {
  font-size: 9px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
}
.countdown-sep {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-light);
  opacity: 0.35;
  line-height: 1;
  margin-bottom: 12px;
  user-select: none;
}

/* 到期状态 */
.countdown-bar.expired {
  opacity: 0.6;
}
.countdown-bar.expired .countdown-label {
  color: var(--text-muted);
}
.countdown-bar.expired > .icon {
  color: var(--text-muted);
}

/* 数字跳动 */
@keyframes countdownPulse {
  0% { transform: scale(1); }
  40% { transform: scale(1.05); }
  100% { transform: scale(1); }
}
.countdown-num.tick {
  animation: countdownPulse 0.25s ease-out;
}

/* 定价四栏网格 */
.pricing-pro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
}
.pricing-card-pro {
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  border: 1.5px solid var(--border);
  background: var(--bg-card);
  position: relative;
  transition: all var(--duration-base) var(--ease-out-expo);
}
.pricing-card-pro:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* 推荐卡片 */
.pricing-card-pro.popular {
  border-color: transparent;
  background:
    linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
    var(--gradient-primary) border-box;
  border: 2px solid transparent;
  box-shadow:
    var(--shadow-xl),
    0 0 40px rgba(0, 102, 255, 0.08);
}
.pricing-card-pro.popular:hover {
  box-shadow:
    var(--shadow-xl),
    0 0 60px rgba(0, 102, 255, 0.12);
  transform: translateY(-4px) scale(1.01);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: #fff;
  padding: 5px 24px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-glow-primary);
  white-space: nowrap;
}
.pricing-badge-monthly {
    background: linear-gradient(135deg, #10b981, #34d399);
    box-shadow: 0 4px 12px rgba(16, 185, 129, .3);
}
.pricing-badge-best {
    background: linear-gradient(135deg, #e85d04, #f48c06);
    box-shadow: 0 4px 12px rgba(232, 93, 4, 0.25);
}

.pricing-card-pro h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--text);
}

/* 价格展示：划线价 + 现价 */
.pricing-card-pro .pricing-amount {
  margin: var(--space-md) 0 var(--space-xs);
  line-height: 1.2;
}
.price-original {
  font-size: var(--text-base);
  color: var(--text-muted);
  text-decoration: line-through;
  font-weight: 500;
  margin-right: 6px;
}
.price-current {
  font-size: 42px;
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.04em;
}
.pricing-card-pro.popular .price-current {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.pricing-card-pro .pricing-amount small {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
}

/* 省钱提示 */
.pricing-save {
  font-size: var(--text-xs);
  color: #e85d04;
  font-weight: 600;
  margin-bottom: var(--space-md);
  padding: 4px 12px;
  background: rgba(232, 93, 4, 0.06);
  border-radius: var(--radius-full);
  display: inline-block;
}

.pricing-features {
  list-style: none;
  margin: var(--space-lg) 0;
  text-align: left;
}
.pricing-features li {
  padding: 10px 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.pricing-features li .icon {
  color: var(--success);
  flex-shrink: 0;
}
.pricing-features li.feat-disabled {
  color: var(--text-muted);
  opacity: 0.65;
}
.pricing-features li.feat-disabled .icon {
  color: var(--text-muted);
  opacity: 0.5;
}
.pricing-features li.feat-limited {
  color: var(--text-muted);
  opacity: 0.72;
}
.pricing-features li.feat-limited .icon {
  color: var(--text-muted);
  opacity: 0.45;
}

/* ===== 持续进化承诺条 ===== */
.evolve-section {
  padding: var(--space-2xl) 0;
  background: var(--bg-alt);
}
.evolve-banner {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl) var(--space-xl);
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.04) 0%, rgba(108, 92, 231, 0.04) 100%);
  border: 1.5px solid rgba(0, 102, 255, 0.12);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}
.evolve-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}
.evolve-icon {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.evolve-icon .icon {
  width: 24px;
  height: 24px;
  color: #fff;
}
.evolve-content h3 {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.evolve-content p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}
.evolve-content strong {
  color: var(--primary);
  font-weight: 600;
}

/* ===== FAQ 区域 ===== */
.faq-section {
  padding: var(--space-3xl) 0 var(--space-4xl);
  background: var(--bg);
}
.faq-list {
  max-width: 700px;
  margin: var(--space-lg) auto 0;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) 0;
  gap: var(--space-md);
  transition: color var(--duration-fast) ease;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-chevron {
  transition: transform 0.3s var(--ease-out-expo);
  color: var(--text-muted);
  flex-shrink: 0;
}
.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out-expo);
}
.faq-answer p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.8;
  padding-bottom: var(--space-lg);
}

/* ===== 底部 CTA — 渐变网格 ===== */
.cta-section {
  padding: var(--space-5xl) 0;
  text-align: center;
  background: var(--gradient-hero);
  color: #fff;
  position: relative;
  overflow: hidden;
}

/* 动态光晕 */
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.08), transparent 60%);
  pointer-events: none;
  animation: ctaGlow 8s ease-in-out infinite alternate;
}

/* 点阵叠加 */
.cta-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

@keyframes ctaGlow {
  from {
    transform: translate(-10%, -10%) rotate(0deg);
  }
  to {
    transform: translate(10%, 10%) rotate(10deg);
  }
}

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

.cta-section h2 {
  font-size: var(--text-3xl);
  font-weight: 900;
  margin-bottom: var(--space-md);
  letter-spacing: -0.03em;
}
.cta-section p {
  font-size: var(--text-lg);
  opacity: 0.85;
  margin-bottom: var(--space-xl);
}
.cta-section .btn-primary {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.cta-section .btn-primary:hover {
  background: #f0f4ff;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.landing-footer {
  padding: var(--space-xl) 0;
  text-align: center;
  font-size: var(--text-sm);
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}
.footer-links {
  margin-bottom: 8px;
}
.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-sep {
  margin: 0 8px;
  opacity: 0.4;
}
.footer-icp {
  margin-top: 6px;
  font-size: 12px;
}
.footer-icp a {
  color: var(--text-muted);
  text-decoration: none;
}
.footer-icp a:hover {
  color: var(--primary);
}

/* ===== 桌面端 ===== */
@media (min-width: 769px) {
  .hero {
    padding: 180px 0 120px;
  }
  .hero h1 {
    font-size: 56px;
  }
  .pain-grid {
    grid-template-columns: 1fr 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  .pricing-pro-grid {
    grid-template-columns: repeat(2, 1fr);
    align-items: start;
  }
  .step-connector {
    display: flex;
    align-items: center;
  }
  .steps-grid {
    flex-wrap: nowrap;
  }
  .vip-grid {
    grid-template-columns: 1fr 1fr;
  }
  .demo-vs {
    display: flex;
  }
  .demo-comparison {
    flex-wrap: nowrap;
  }
  .proof-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .hero h1 {
    font-size: 64px;
  }
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .vip-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .scenario-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1100px) {
  .pricing-pro-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===== 移动端微调 ===== */
@media (max-width: 768px) {
  .landing-nav {
    top: 8px;
    left: 8px;
    right: 8px;
  }
  .nav-inner {
    padding: 10px 16px;
    border-radius: var(--radius-lg);
  }
  .hero {
    padding: 120px 0 64px;
  }
  .hero-stats {
    gap: var(--space-sm);
  }
  .hero-stat {
    padding: 14px 16px;
    flex: 1;
    min-width: 0;
  }
  .hero-stat strong {
    font-size: var(--text-xl);
  }
  .cta-section {
    padding: var(--space-4xl) 0;
  }
  .steps-grid {
    gap: var(--space-sm);
  }
  .step-card {
    min-width: 100%;
    max-width: 100%;
  }
  .demo-card {
    min-width: 100%;
  }
  .proof-number {
    font-size: 36px;
  }
  .proof-number span {
    font-size: 15px;
  }
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  .compare-table {
    font-size: 13px;
  }
  .compare-table thead th,
  .compare-table tbody td {
    padding: 10px 8px;
  }
  .countdown-bar {
    padding: 7px 14px;
    gap: 8px;
  }
  .countdown-num {
    min-width: 28px;
    height: 24px;
    font-size: 13px;
    border-radius: 5px;
  }
  .countdown-sep {
    font-size: 12px;
    margin-bottom: 10px;
  }
  .countdown-label {
    font-size: 11px;
  }
}