@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;600&family=Sora:wght@300;400;600&display=swap');

/* ==========================================================================
   Design Tokens - 静谧雾夜与纯色磨砂玻璃体系
   ========================================================================== */
:root {
  --color-base: #0B1512;
  --color-panel: #101D19;
  --color-panel-elevated: #152520;
  --color-accent-live: #A8E063;
  --color-text-main: #DCE3DC;
  --color-text-muted: rgba(220, 227, 220, 0.6);
  --color-border-hairline: rgba(220, 227, 220, 0.08);
  --color-border-hover: rgba(220, 227, 220, 0.16);
  --color-fog: #183329;
  
  --font-main: 'Sora', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  
  --radius-panel: 20px;
  --radius-pill: 9999px;
  --radius-sm: 8px;
  
  --spacing-section: 96px;
  --grid-rhythm: 12px;
  --blur-glass: 24px;
  
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  background-color: var(--color-base);
  color: var(--color-text-main);
  font-family: var(--font-main);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-base);
  color: var(--color-text-main);
  font-family: var(--font-main);
  font-weight: 400;
  line-height: 1.68;
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-normal), opacity var(--transition-normal);
}

ul, ol {
  list-style: none;
}

/* ==========================================================================
   雾层与漂移背景（纯色 + 模糊平移 60秒循环）
   ========================================================================== */
.fog-backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.fog-oval-1 {
  position: absolute;
  top: -150px;
  left: 10%;
  width: 780px;
  height: 520px;
  border-radius: 50%;
  background-color: var(--color-fog);
  opacity: 0.05;
  filter: blur(90px);
  animation: fogFloatOne 60s infinite ease-in-out alternate;
}

.fog-oval-2 {
  position: absolute;
  bottom: -200px;
  right: 5%;
  width: 860px;
  height: 580px;
  border-radius: 50%;
  background-color: var(--color-fog);
  opacity: 0.05;
  filter: blur(100px);
  animation: fogFloatTwo 60s infinite ease-in-out alternate;
}

@keyframes fogFloatOne {
  0% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(120px, 80px) scale(1.08);
  }
  100% {
    transform: translate(-60px, 140px) scale(0.95);
  }
}

@keyframes fogFloatTwo {
  0% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-140px, -90px) scale(1.06);
  }
  100% {
    transform: translate(80px, -130px) scale(0.94);
  }
}

/* 单只萤光点沿贝塞尔路径在玻璃板后方缓慢游荡 */
.firefly-orb {
  position: fixed;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--color-accent-live);
  opacity: 0.45;
  filter: blur(10px);
  pointer-events: none;
  z-index: 1;
  animation: fireflyRoam 48s cubic-bezier(0.42, 0, 0.58, 1) infinite alternate;
}

@keyframes fireflyRoam {
  0% {
    top: 18%;
    left: 22%;
    opacity: 0.25;
  }
  25% {
    top: 36%;
    left: 78%;
    opacity: 0.5;
  }
  50% {
    top: 68%;
    left: 45%;
    opacity: 0.3;
  }
  75% {
    top: 52%;
    left: 12%;
    opacity: 0.55;
  }
  100% {
    top: 84%;
    left: 80%;
    opacity: 0.35;
  }
}

/* ==========================================================================
   页面容器与网格韵律
   ========================================================================== */
.site-wrapper {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-block {
  padding: var(--spacing-section) 0;
  position: relative;
}

/* ==========================================================================
   面板 Glass Panel (纯色基底 + 发丝线 + 模糊)
   ========================================================================== */
.glass-panel {
  background-color: var(--color-panel);
  border-radius: var(--radius-panel);
  border: 1px solid var(--color-border-hairline);
  box-shadow: inset 0 0 0 1px var(--color-border-hairline);
  backdrop-filter: blur(var(--blur-glass));
  -webkit-backdrop-filter: blur(var(--blur-glass));
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.glass-panel:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.36), inset 0 0 0 1px var(--color-border-hover);
}

/* ==========================================================================
   页眉与导航
   ========================================================================== */
.site-header {
  position: sticky;
  top: 16px;
  z-index: 100;
  width: 100%;
  max-width: 1240px;
  margin: 16px auto 0;
  padding: 0 24px;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  background-color: var(--color-panel);
  border: 1px solid var(--color-border-hairline);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(var(--blur-glass));
  -webkit-backdrop-filter: blur(var(--blur-glass));
}

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

.brand-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent-live);
  animation: pulseIndicator 3.6s infinite ease-in-out;
}

@keyframes pulseIndicator {
  0%, 100% {
    opacity: 0.35;
    transform: scale(0.9);
  }
  50% {
    opacity: 1;
    transform: scale(1.15);
  }
}

.brand-text {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-main);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-muted);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-text-main);
}

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

/* ==========================================================================
   按钮体系 (严格纯色，磁吸交互，清晰规范)
   ========================================================================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-panel-elevated);
  color: var(--color-text-main);
  border: 1px solid var(--color-border-hairline);
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: inset 0 0 0 1px var(--color-border-hairline);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  user-select: none;
}

.btn-primary:hover {
  border-color: rgba(220, 227, 220, 0.24);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4), inset 0 0 0 1px rgba(220, 227, 220, 0.24);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border-hairline);
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 400;
  cursor: pointer;
  transition: color var(--transition-normal), border-color var(--transition-normal);
}

.btn-secondary:hover {
  color: var(--color-text-main);
  border-color: rgba(220, 227, 220, 0.2);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

/* ==========================================================================
   主视觉区 (Hero Section) - 56px 细字重宣言
   ========================================================================== */
.hero-section {
  padding: 110px 0 80px;
  text-align: center;
}

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background-color: var(--color-panel);
  border: 1px solid var(--color-border-hairline);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 300;
  color: var(--color-text-muted);
  margin-bottom: 36px;
}

.hero-headline {
  font-size: 56px;
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--color-text-main);
  max-width: 980px;
  margin: 0 auto 24px;
}

.hero-subheadline {
  font-size: 20px;
  font-weight: 300;
  color: var(--color-text-muted);
  max-width: 720px;
  margin: 0 auto 44px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   非对称 Bento 网格系统 (包含今夜活跃脉冲双倍宽面板)
   ========================================================================== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 36px;
}

.bento-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 280px;
}

.bento-card-double {
  grid-column: span 2;
}

.bento-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.bento-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-muted);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background-color: var(--color-base);
  border: 1px solid var(--color-border-hairline);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent-live);
}

.bento-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 12px;
}

.bento-desc {
  font-size: 14px;
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.pulse-canvas-container {
  width: 100%;
  height: 160px;
  margin-top: 18px;
  position: relative;
}

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

.metric-row {
  display: flex;
  gap: 24px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-hairline);
}

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

.metric-num {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-main);
}

.metric-label {
  font-size: 12px;
  font-weight: 300;
  color: var(--color-text-muted);
}

/* ==========================================================================
   产品核心优势卡片 (3个图文卡片)
   ========================================================================== */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 300;
  color: var(--color-text-main);
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.feature-card {
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
}

.card-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--color-base);
  border: 1px solid var(--color-border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--color-text-main);
}

.card-icon-svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

.feature-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 14px;
}

.feature-text {
  font-size: 14px;
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ==========================================================================
   流媒体与 AI 支持图卡
   ========================================================================== */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.matrix-card {
  padding: 36px 32px;
}

.matrix-pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.service-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background-color: var(--color-base);
  border: 1px solid var(--color-border-hairline);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-main);
}

.service-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent-live);
}

/* ==========================================================================
   套餐价格对比表 (参考真实套餐价格)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  align-items: stretch;
}

.pricing-card {
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.pricing-card.featured {
  border-color: rgba(220, 227, 220, 0.2);
}

.pricing-header {
  margin-bottom: 24px;
}

.pricing-plan-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 8px;
}

.pricing-plan-desc {
  font-size: 13px;
  font-weight: 300;
  color: var(--color-text-muted);
}

.pricing-cost-row {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 20px 0 28px;
}

.cost-symbol {
  font-size: 20px;
  font-weight: 300;
  color: var(--color-text-main);
}

.cost-value {
  font-size: 44px;
  font-weight: 600;
  line-height: 1;
  color: var(--color-text-main);
}

.cost-period {
  font-size: 14px;
  font-weight: 300;
  color: var(--color-text-muted);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  border-top: 1px solid var(--color-border-hairline);
  padding-top: 24px;
}

.feature-check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 300;
  color: var(--color-text-muted);
}

.check-icon {
  width: 16px;
  height: 16px;
  stroke: var(--color-accent-live);
  stroke-width: 2;
  fill: none;
  flex-shrink: 0;
}

/* ==========================================================================
   常见问题解答 (FAQ)
   ========================================================================== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border-radius: var(--radius-panel);
  background-color: var(--color-panel);
  border: 1px solid var(--color-border-hairline);
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.faq-question-btn {
  width: 100%;
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  color: var(--color-text-main);
  font-size: 17px;
  font-weight: 400;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
}

.faq-arrow {
  width: 18px;
  height: 18px;
  stroke: var(--color-text-muted);
  stroke-width: 1.5;
  fill: none;
  transition: transform var(--transition-normal);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  padding: 0 28px;
}

.faq-answer-inner {
  padding-bottom: 24px;
  font-size: 14px;
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--color-border-hairline);
  padding-top: 16px;
}

/* ==========================================================================
   用户评价 (沉稳、真实无 emoji)
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.testimonial-card {
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-quote {
  font-size: 14px;
  font-weight: 300;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--color-border-hairline);
  padding-top: 16px;
}

.user-avatar-initial {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-base);
  border: 1px solid var(--color-border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-main);
}

.user-meta-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-main);
}

.user-meta-role {
  font-size: 12px;
  font-weight: 300;
  color: var(--color-text-muted);
}

/* ==========================================================================
   页脚 (Footer - 严格只保留四个标题，在新页面打开)
   ========================================================================== */
.site-footer {
  margin-top: 60px;
  padding: 48px 0 64px;
  border-top: 1px solid var(--color-border-hairline);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-muted);
  transition: color var(--transition-normal);
}

.footer-link:hover {
  color: var(--color-text-main);
}

/* ==========================================================================
   底部坞站 Toast 提示
   ========================================================================== */
.dock-toast-wrap {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  z-index: 99;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.dock-toast-wrap.show {
  transform: translateX(-50%) translateY(0);
}

.dock-toast {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 22px;
  background-color: var(--color-panel);
  border: 1px solid var(--color-border-hairline);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-main);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(var(--blur-glass));
  -webkit-backdrop-filter: blur(var(--blur-glass));
}

.dock-toast-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent-live);
}

/* ==========================================================================
   响应式媒体查询 (@media) 保证手机端单栏与手指友好点击
   ========================================================================== */
@media (max-width: 992px) {
  .hero-headline {
    font-size: 42px;
  }
  
  .bento-grid {
    grid-template-columns: 1fr;
  }
  
  .bento-card-double {
    grid-column: span 1;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .matrix-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-section: 64px;
  }
  
  .site-header {
    top: 8px;
    padding: 0 16px;
  }
  
  .nav-bar {
    padding: 12px 20px;
  }
  
  .nav-menu {
    display: none; /* 移动端精简，保留主视觉与直达按钮 */
  }
  
  .hero-section {
    padding: 64px 0 48px;
  }
  
  .hero-headline {
    font-size: 32px;
    line-height: 1.25;
  }
  
  .hero-subheadline {
    font-size: 16px;
    margin-bottom: 32px;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
    min-height: 48px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .footer-nav {
    flex-direction: column;
    gap: 20px;
  }
}