/* Nice加速 -「星穹星轨 · 次元穿梭」全景动漫视觉与动效规范样式表 */
:root {
  --bg-deep: #070b14;
  --bg-page: #0a0f1d;
  --bg-surface: rgba(15, 23, 42, 0.78);
  --bg-surface-blur: blur(16px);
  --bg-card: rgba(17, 26, 49, 0.72);
  --bg-card-hover: rgba(26, 39, 72, 0.85);
  --bg-subtle: rgba(30, 41, 59, 0.5);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --border-subtle: rgba(148, 163, 184, 0.14);
  --border-glow: rgba(56, 189, 248, 0.35);
  --border-focus: #38bdf8;

  /* 动漫星芒与极光色彩体系 */
  --cyan: #38bdf8;
  --cyan-bright: #00f2fe;
  --cyan-glow: rgba(56, 189, 248, 0.45);
  --violet: #818cf8;
  --purple: #c084fc;
  --purple-glow: rgba(192, 132, 252, 0.35);
  --gold: #fbbf24;
  --gold-glow: rgba(251, 191, 36, 0.35);
  --emerald: #34d399;
  --emerald-glow: rgba(52, 211, 153, 0.35);

  --primary: #2563eb;
  --primary-hover: #1d4ed8;

  --max-w: 1160px;
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.22);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-deep);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

/* 苍穹星轨背景微光图层 */
.celestial-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 15% 15%, rgba(129, 140, 248, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 35%, rgba(56, 189, 248, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 50% 85%, rgba(192, 132, 252, 0.08) 0%, transparent 55%),
    linear-gradient(180deg, #070b14 0%, #0a1122 50%, #070b14 100%);
}

#animeCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* 容器与版心 */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
  position: relative;
  z-index: 2;
}

/* 顶部导航 Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: var(--bg-surface-blur);
  -webkit-backdrop-filter: var(--bg-surface-blur);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.site-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(56, 189, 248, 0.4) 50%, transparent 100%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.brand-logo-wrap {
  position: relative;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-logo-wrap::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  opacity: 0.7;
  filter: blur(4px);
  animation: pulse-ring 4s infinite alternate;
}

.brand-logo {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  z-index: 1;
}

.brand-title-box {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  background: linear-gradient(90deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtag {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  transition: width 0.25s ease, left 0.25s ease;
  border-radius: 999px;
}

.nav-link:hover {
  color: #ffffff;
}

.nav-link:hover::after {
  width: 100%;
  left: 0;
}

/* 极光流光 CTA 按钮 */
.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  font-size: 0.92rem;
  font-weight: 700;
  color: #070b14;
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  border-radius: var(--radius-sm);
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  min-height: 40px;
}

.nav-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(56, 189, 248, 0.6);
  color: #070b14;
}

.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--text-main);
  backdrop-filter: var(--bg-surface-blur);
}

/* 按钮通用体系与动效 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  min-height: 48px;
  padding: 12px 28px;
  font-size: 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  z-index: 1;
}

.btn:active {
  transform: scale(0.97);
}

.btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* 主 CTA 极光流转特效 */
.btn-primary {
  background: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #7c3aed 100%);
  background-size: 200% 200%;
  animation: aurora-flow 6s ease infinite;
  color: #070b14;
  font-weight: 800;
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(60deg, transparent 40%, rgba(255, 255, 255, 0.45) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
  pointer-events: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(56, 189, 248, 0.6), 0 0 12px rgba(168, 85, 247, 0.4);
  color: #070b14;
}

.btn-primary:hover::after {
  transform: translateX(100%);
}

/* 次级按钮 - 次元透镜质感 */
.btn-secondary {
  background: rgba(15, 23, 42, 0.6);
  color: #f8fafc;
  border: 1px solid var(--border-glow);
  backdrop-filter: var(--bg-surface-blur);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.btn-secondary:hover {
  background: rgba(30, 41, 59, 0.85);
  border-color: var(--cyan);
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.3);
  color: #ffffff;
  transform: translateY(-2px);
}

/* 统一区块间距 */
.section {
  padding: 88px 0;
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px auto;
  position: relative;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.15);
}

.section-tag::before {
  content: "✦";
  font-size: 0.75rem;
  color: var(--cyan);
  animation: spin-slow 8s linear infinite;
}

.section-title {
  font-size: 2.1rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  line-height: 1.32;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ====================================================================
   Hero 首屏 - 次元星轨与动漫 HUD 视觉中心
   ==================================================================== */
.hero-section {
  padding: 84px 0 96px 0;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 52px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
}

.hero-badge-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-glow);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
  align-self: flex-start;
  backdrop-filter: var(--bg-surface-blur);
}

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

.status-text {
  font-size: 0.84rem;
  font-weight: 600;
  color: #e2e8f0;
  letter-spacing: 0.02em;
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.22;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
}

.hero-title-accent {
  background: linear-gradient(135deg, #38bdf8 0%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 42px;
  flex-wrap: wrap;
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}

.trust-icon {
  width: 18px;
  height: 18px;
  color: var(--cyan);
  flex-shrink: 0;
  filter: drop-shadow(0 0 6px var(--cyan-glow));
}

/* 动漫次元星轨跃迁控制台 (Hero Visual) */
.hero-visual-hub {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-lg), 0 0 30px rgba(56, 189, 248, 0.15);
  backdrop-filter: var(--bg-surface-blur);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* 动漫 HUD 四角瞄准框装饰 */
.hero-visual-hub::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 10px;
  width: 16px;
  height: 16px;
  border-top: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
  pointer-events: none;
}

.hero-visual-hub::after {
  content: "";
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: 16px;
  height: 16px;
  border-bottom: 2px solid var(--purple);
  border-right: 2px solid var(--purple);
  pointer-events: none;
}

.hub-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 22px;
}

.hub-title-box {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hub-indicator-icon {
  width: 22px;
  height: 22px;
  color: var(--cyan);
  animation: spin-slow 12s linear infinite;
}

.hub-title {
  font-size: 1rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.hub-badge {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.35);
  padding: 3px 10px;
  border-radius: var(--radius-xs);
  letter-spacing: 0.05em;
}

/* 星轨全息图层 (Astral Ring Hologram) */
.astral-orbit-display {
  position: relative;
  width: 100%;
  height: 130px;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, rgba(15, 23, 42, 0.4) 70%);
  border: 1px dashed rgba(56, 189, 248, 0.25);
  overflow: hidden;
}

.astral-orbit-svg {
  width: 120px;
  height: 120px;
  animation: spin-slow 20s linear infinite;
}

.astral-orbit-inner {
  position: absolute;
  font-size: 0.78rem;
  font-weight: 800;
  color: #ffffff;
  text-shadow: 0 0 10px var(--cyan);
  letter-spacing: 0.08em;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.astral-orbit-inner span {
  font-size: 0.65rem;
  color: var(--cyan);
  font-weight: 600;
}

/* 状态数据矩阵 */
.hub-metric-list {
  display: grid;
  gap: 12px;
  margin-bottom: 22px;
}

.hub-metric-row {
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.hub-metric-row:hover {
  border-color: var(--border-glow);
  background: rgba(26, 39, 72, 0.7);
}

.hub-metric-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.hub-metric-label-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.hub-metric-value {
  font-size: 0.95rem;
  font-weight: 800;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 6px;
}

.val-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(52, 211, 153, 0.15);
  color: var(--emerald);
  border: 1px solid rgba(52, 211, 153, 0.3);
}

.hub-bottom-prompt {
  font-size: 0.82rem;
  color: var(--text-dim);
  text-align: center;
  letter-spacing: 0.02em;
}

/* ====================================================================
   Features 核心特性网格 (4张卡)
   ==================================================================== */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 26px;
}

.feat-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  position: relative;
  overflow: hidden;
  backdrop-filter: var(--bg-surface-blur);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
}

.feat-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feat-item:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.feat-item:hover::before {
  opacity: 1;
}

.feat-icon-wrap {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feat-item:hover .feat-icon-wrap {
  transform: scale(1.08) rotate(3deg);
  box-shadow: 0 0 24px rgba(56, 189, 248, 0.4);
}

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

.feat-title {
  font-size: 1.22rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.feat-text {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.68;
}

/* ====================================================================
   流媒体与 AI 支持服务模块
   ==================================================================== */
.service-support-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.support-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  backdrop-filter: var(--bg-surface-blur);
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.support-panel:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-md), 0 0 24px rgba(129, 140, 248, 0.15);
}

.support-panel-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 14px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 12px;
}

.support-panel-title svg {
  color: var(--cyan);
  filter: drop-shadow(0 0 8px var(--cyan-glow));
}

.support-panel-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 26px;
  line-height: 1.65;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
}

.service-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 700;
  color: #e2e8f0;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  transition: all 0.2s ease;
}

.service-tag:hover {
  border-color: var(--cyan);
  color: #ffffff;
  background: rgba(56, 189, 248, 0.12);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.2);
}

.tag-bullet {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
}

/* ====================================================================
   使用场景卡片 (3张)
   ==================================================================== */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.scene-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  display: flex;
  flex-direction: column;
  backdrop-filter: var(--bg-surface-blur);
  position: relative;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
}

.scene-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.scene-audience {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 4px 12px;
  border-radius: var(--radius-xs);
  margin-bottom: 18px;
  align-self: flex-start;
  letter-spacing: 0.03em;
}

.scene-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 10px;
}

.scene-devices {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.scene-devices svg {
  color: var(--cyan);
}

.scene-desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex-grow: 1;
}

/* ====================================================================
   Pricing 套餐区 (3档，中档进阶推荐)
   ==================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  backdrop-filter: var(--bg-surface-blur);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
}

.plan-card:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(56, 189, 248, 0.2);
}

/* 推荐档位 (畅享进阶档) 极光能量光环 */
.plan-card.recommended {
  border: 2px solid var(--cyan);
  background: linear-gradient(180deg, rgba(26, 39, 72, 0.85) 0%, rgba(17, 26, 49, 0.9) 100%);
  box-shadow: var(--shadow-lg), 0 0 36px rgba(56, 189, 248, 0.3);
}

.recommend-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, #00f2fe 0%, #7c3aed 100%);
  color: #070b14;
  font-size: 0.82rem;
  font-weight: 900;
  padding: 5px 18px;
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.6);
  letter-spacing: 0.04em;
}

.plan-head {
  margin-bottom: 22px;
}

.plan-name {
  font-size: 1.45rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.plan-for {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 26px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border-subtle);
}

.price-currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--cyan);
}

.price-val {
  font-size: 2.9rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.price-period {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.plan-feature-list {
  list-style: none;
  display: grid;
  gap: 14px;
  margin-bottom: 36px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.94rem;
  color: #cbd5e1;
}

.plan-feature-icon {
  width: 18px;
  height: 18px;
  color: var(--cyan);
  flex-shrink: 0;
  margin-top: 3px;
  filter: drop-shadow(0 0 6px var(--cyan-glow));
}

.plan-card .btn {
  width: 100%;
}

/* ====================================================================
   FAQ 常见问答手风琴
   ==================================================================== */
.faq-box {
  max-width: 840px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  backdrop-filter: var(--bg-surface-blur);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.faq-item.active {
  border-color: var(--border-glow);
  background: rgba(22, 34, 62, 0.85);
}

.faq-toggle {
  width: 100%;
  text-align: left;
  padding: 22px 26px;
  font-size: 1.08rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  transition: color 0.2s ease;
}

.faq-toggle:hover {
  color: var(--cyan);
}

.faq-toggle:focus-visible {
  outline: 2px solid var(--cyan);
}

.faq-toggle-icon {
  width: 22px;
  height: 22px;
  color: var(--cyan);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  flex-shrink: 0;
}

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

.faq-answer {
  display: none;
  padding: 0 26px 22px 26px;
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.72;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  background: rgba(15, 23, 42, 0.4);
}

.faq-item.active .faq-answer {
  display: block;
  animation: fadeIn 0.25s ease;
}

/* ====================================================================
   Final CTA 转化区
   ==================================================================== */
.final-cta-section {
  padding: 100px 0;
  position: relative;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
  background: radial-gradient(circle at 50% 50%, rgba(56, 189, 248, 0.12) 0%, rgba(7, 11, 20, 0.8) 75%);
}

.final-cta-box {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.final-cta-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.final-cta-title {
  font-size: 2.5rem;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
  text-shadow: 0 0 24px rgba(56, 189, 248, 0.3);
}

.final-cta-subtitle {
  font-size: 1.12rem;
  color: var(--text-muted);
  margin-bottom: 34px;
}

/* ====================================================================
   页脚 Footer
   ==================================================================== */
.site-footer {
  background: #05080f;
  color: var(--text-dim);
  padding: 56px 0 36px 0;
  font-size: 0.9rem;
  position: relative;
  z-index: 2;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: #94a3b8;
  font-weight: 500;
}

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

.footer-disclosure {
  text-align: center;
  font-size: 0.85rem;
  color: #64748b;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.65;
}

.footer-copyright {
  text-align: center;
  font-size: 0.84rem;
  color: #475569;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
}

/* 移动端吸底 CTA 栏 */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(7, 11, 20, 0.92);
  backdrop-filter: var(--bg-surface-blur);
  -webkit-backdrop-filter: var(--bg-surface-blur);
  border-top: 1px solid var(--border-glow);
  padding: 12px 18px;
  z-index: 99;
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.5);
}

.mobile-sticky-cta .btn {
  width: 100%;
}

/* ====================================================================
   文章页与合规页面公用动漫卡片样式
   ==================================================================== */
.page-header {
  padding: 48px 0 28px 0;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(10, 15, 29, 0.7);
  backdrop-filter: var(--bg-surface-blur);
}

.page-header-inner {
  max-width: 860px;
  margin: 0 auto;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.breadcrumbs a {
  color: var(--cyan);
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.page-main-title {
  font-size: 2.2rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.3;
  margin-bottom: 14px;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.5);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.article-content-wrap {
  padding: 52px 0 76px 0;
}

.article-body-card {
  max-width: 860px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: var(--bg-surface-blur);
}

.article-lead {
  font-size: 1.08rem;
  color: #e2e8f0;
  background: rgba(15, 23, 42, 0.6);
  border-left: 4px solid var(--cyan);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 36px;
  line-height: 1.7;
}

.article-rich-text h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: #ffffff;
  margin: 40px 0 18px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-rich-text h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--cyan);
  margin: 26px 0 14px 0;
}

.article-rich-text p {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.article-rich-text ul, .article-rich-text ol {
  margin: 0 0 24px 28px;
  color: var(--text-muted);
}

.article-rich-text li {
  margin-bottom: 10px;
  line-height: 1.7;
}

.article-rich-text a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-rich-text a:hover {
  color: #ffffff;
  text-shadow: 0 0 8px var(--cyan);
}

.article-faq-block {
  margin-top: 40px;
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
}

.article-faq-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 18px;
  color: #ffffff;
}

.article-faq-item {
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px dashed rgba(148, 163, 184, 0.15);
}

.article-faq-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.article-faq-q {
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
  margin-bottom: 8px;
}

.article-faq-a {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.article-cta-box {
  margin-top: 44px;
  padding: 36px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15) 0%, rgba(124, 58, 237, 0.15) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 0 24px rgba(56, 189, 248, 0.15);
}

.article-cta-heading {
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.article-cta-desc {
  font-size: 0.96rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.article-links-box {
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px solid var(--border-subtle);
}

.article-links-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.article-links-list {
  list-style: none;
  display: grid;
  gap: 12px;
}

.article-links-list a {
  color: var(--cyan);
  font-size: 0.96rem;
  font-weight: 600;
}

.article-links-list a:hover {
  color: #ffffff;
}

/* 指南页卡片 */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  backdrop-filter: var(--bg-surface-blur);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
}

.guide-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.guide-card-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
  line-height: 1.4;
}

.guide-card-desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.68;
  margin-bottom: 22px;
  flex-grow: 1;
}

.guide-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.guide-read-link {
  font-weight: 700;
  color: var(--cyan);
}

/* 网站地图样式 */
.sitemap-group {
  margin-bottom: 36px;
}

.sitemap-group-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.sitemap-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.sitemap-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 18px;
}

.sitemap-card a {
  font-weight: 700;
  color: var(--cyan);
  display: block;
  margin-bottom: 6px;
}

.sitemap-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

/* ====================================================================
   动画关键帧定义 (GPU 加速)
   ==================================================================== */
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.5; }
  50% { transform: scale(1.05); opacity: 0.85; }
  100% { transform: scale(0.95); opacity: 0.5; }
}

@keyframes aurora-flow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ====================================================================
   响应式断点与无障碍
   ==================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }
  .pricing-grid, .scene-grid {
    grid-template-columns: 1fr;
  }
  .service-support-grid {
    grid-template-columns: 1fr;
  }
  .guides-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(7, 11, 20, 0.96);
    backdrop-filter: var(--bg-surface-blur);
    -webkit-backdrop-filter: var(--bg-surface-blur);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-glow);
    box-shadow: var(--shadow-lg);
    gap: 18px;
  }
  .nav-menu.active {
    display: flex;
  }
  .mobile-toggle {
    display: inline-flex;
  }
  .hero-title {
    font-size: 2.15rem;
  }
  .section {
    padding: 64px 0;
  }
  .article-body-card {
    padding: 26px;
  }
  .mobile-sticky-cta {
    display: block;
  }
  body {
    padding-bottom: 72px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.85rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .section-title {
    font-size: 1.6rem;
  }
}

/* 支持减弱动态效果 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  #animeCanvas {
    display: none;
  }
}