/* ==========================================================================
   仙路湾加速 -「绯枫幽夜 · 灵境结界」全景动漫视觉与动效样式表 (Anime UI System)
   核心基调：深邃墨夜穹顶 + 绯枫落叶与荧火微光 + 琉璃晶透魔导卡片 + 灵能流光 CTA
   ========================================================================== */

:root {
  /* 基础与画布色彩 */
  --bg-deep: #090d16;
  --bg-card: rgba(15, 22, 38, 0.82);
  --bg-card-hover: rgba(22, 32, 54, 0.94);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-input: rgba(11, 17, 30, 0.9);

  /* 文字体系 */
  --text-pure: #ffffff;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* 动漫灵能色彩 */
  --color-maple: #f43f5e;
  --color-maple-glow: rgba(244, 63, 94, 0.45);
  --color-amber: #f59e0b;
  --color-amber-glow: rgba(245, 158, 11, 0.35);
  --color-violet: #8b5cf6;
  --color-violet-glow: rgba(139, 92, 246, 0.35);
  --color-cyan: #06b6d4;
  --color-cyan-glow: rgba(6, 182, 212, 0.35);
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;

  /* 边框与阴影 */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-maple: rgba(244, 63, 94, 0.3);
  --border-amber: rgba(245, 158, 11, 0.3);
  --border-cyan: rgba(6, 182, 212, 0.3);
  --shadow-card: 0 12px 36px -6px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 24px rgba(244, 63, 94, 0.25);

  /* 字体与尺寸 */
  --font-system: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --max-width: 1140px;
  --nav-height: 72px;
}

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

html {
  font-family: var(--font-system);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-main);
  background-color: var(--bg-deep);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--text-main);
  background-color: var(--bg-deep);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(244, 63, 94, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.09) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(6, 182, 212, 0.07) 0%, transparent 60%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

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

a {
  color: var(--color-cyan);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--color-maple);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ================= 动漫自然动态环境层 (枫叶与萤火) ================= */
.anime-fx-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

/* 绯红枫叶飘落粒子 */
.maple-leaf {
  position: absolute;
  width: 14px;
  height: 14px;
  background: radial-gradient(circle at 40% 40%, #fb7185, #e11d48);
  clip-path: polygon(50% 0%, 65% 30%, 100% 35%, 75% 60%, 85% 100%, 50% 80%, 15% 100%, 25% 60%, 0% 35%, 35% 30%);
  opacity: 0.65;
  filter: drop-shadow(0 0 6px rgba(244, 63, 94, 0.5));
  animation: leafFloat 14s linear infinite;
}

.maple-leaf:nth-child(1) { left: 8%; top: -20px; animation-duration: 16s; animation-delay: 0s; transform: scale(1.1); }
.maple-leaf:nth-child(2) { left: 25%; top: -20px; animation-duration: 13s; animation-delay: 2.5s; transform: scale(0.8); }
.maple-leaf:nth-child(3) { left: 45%; top: -20px; animation-duration: 18s; animation-delay: 5s; transform: scale(1.2); }
.maple-leaf:nth-child(4) { left: 68%; top: -20px; animation-duration: 15s; animation-delay: 1.2s; transform: scale(0.9); }
.maple-leaf:nth-child(5) { left: 88%; top: -20px; animation-duration: 14s; animation-delay: 4s; transform: scale(1.0); }

@keyframes leafFloat {
  0% {
    transform: translateY(0) rotate(0deg) translateX(0);
    opacity: 0;
  }
  15% {
    opacity: 0.75;
  }
  50% {
    transform: translateY(50vh) rotate(180deg) translateX(35px);
  }
  85% {
    opacity: 0.65;
  }
  100% {
    transform: translateY(105vh) rotate(360deg) translateX(-30px);
    opacity: 0;
  }
}

/* 荧夜金羽微光 (萤火虫粒子) */
.firefly-glow {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: #fde047;
  box-shadow: 0 0 12px 3px rgba(250, 204, 21, 0.8), 0 0 24px 6px rgba(245, 158, 11, 0.4);
  animation: fireflyDance 9s ease-in-out infinite;
}

.firefly-glow:nth-child(6) { left: 14%; top: 40%; animation-duration: 8s; animation-delay: 1s; }
.firefly-glow:nth-child(7) { left: 38%; top: 65%; animation-duration: 10s; animation-delay: 3s; }
.firefly-glow:nth-child(8) { left: 78%; top: 25%; animation-duration: 7s; animation-delay: 2s; }
.firefly-glow:nth-child(9) { left: 92%; top: 75%; animation-duration: 9s; animation-delay: 4.5s; }

@keyframes fireflyDance {
  0%, 100% {
    transform: translate(0, 0) scale(0.8);
    opacity: 0.3;
  }
  50% {
    transform: translate(25px, -35px) scale(1.3);
    opacity: 0.95;
  }
}

/* ================= 顶部导航条 (晶透磨砂与滚动收缩) ================= */
.header-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(9, 13, 22, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  height: var(--nav-height);
  transition: height 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
}

.header-nav.scrolled {
  height: 60px;
  background-color: rgba(9, 13, 22, 0.95);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  border-bottom-color: rgba(244, 63, 94, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-pure);
  letter-spacing: 0.02em;
}

.brand-logo:hover {
  color: var(--color-maple);
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #e11d48, #8b5cf6);
  box-shadow: 0 0 14px rgba(225, 29, 72, 0.5);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.5rem 0.25rem;
  position: relative;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-maple), var(--color-amber));
  border-radius: 2px;
  transition: width 0.25s ease;
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.125rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #ffffff;
  background: linear-gradient(135deg, #e11d48, #be123c);
  border: 1px solid rgba(244, 63, 94, 0.5);
  border-radius: var(--radius-sm);
  box-shadow: 0 0 16px rgba(244, 63, 94, 0.35);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.btn-header-cta:hover {
  background: linear-gradient(135deg, #f43f5e, #e11d48);
  box-shadow: 0 0 24px rgba(244, 63, 94, 0.6);
  color: #ffffff;
  transform: translateY(-1px);
}

.mobile-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 0.5rem 0.625rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-main);
  font-size: 1.125rem;
  line-height: 1;
}

/* ================= 按钮系统 (流光扫过与微波纹) ================= */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #e11d48 0%, #be123c 60%, #9f1239 100%);
  border: 1px solid rgba(251, 113, 133, 0.4);
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(225, 29, 72, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-25deg);
  animation: shimmerSweep 4s infinite;
}

@keyframes shimmerSweep {
  0% { left: -100%; }
  25%, 100% { left: 160%; }
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 30px rgba(244, 63, 94, 0.65), 0 0 20px rgba(244, 63, 94, 0.4);
  color: #ffffff;
}

.btn-primary:active {
  transform: translateY(1px) scale(0.98);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--text-pure);
  transform: translateY(-2px);
}

/* 按钮点击水纹 */
.btn-ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: rippleFx 0.6s linear;
  background-color: rgba(255, 255, 255, 0.35);
  pointer-events: none;
}

@keyframes rippleFx {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ================= Hero 区域 (动漫 HUD 与灵能阵列) ================= */
.hero-section {
  position: relative;
  padding: 5rem 0 4rem;
  text-align: center;
  z-index: 1;
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: #fb7185;
  background: rgba(244, 63, 94, 0.1);
  border: 1px solid var(--border-maple);
  border-radius: 999px;
  box-shadow: 0 0 15px rgba(244, 63, 94, 0.2);
  margin-bottom: 1.5rem;
}

.hero-pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-maple);
  box-shadow: 0 0 8px var(--color-maple);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 0.4; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.3); }
}

.hero-title {
  font-size: 2.875rem;
  line-height: 1.22;
  font-weight: 800;
  color: var(--text-pure);
  letter-spacing: -0.02em;
  margin-bottom: 1.35rem;
  text-shadow: 0 0 35px rgba(244, 63, 94, 0.3);
}

.hero-title-gradient {
  background: linear-gradient(135deg, #ffffff 30%, #fda4af 70%, #f43f5e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.1875rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

/* 动漫次元结界核心主图 (HUD Magic Sigil Array) */
.hero-sigil-wrap {
  position: relative;
  width: 220px;
  height: 220px;
  margin: 0 auto 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sigil-circle-outer {
  position: absolute;
  inset: 0;
  border: 1px dashed rgba(244, 63, 94, 0.4);
  border-radius: 50%;
  animation: sigilSpin 24s linear infinite;
}

.sigil-circle-mid {
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 50%;
  animation: sigilSpinRev 16s linear infinite;
}

.sigil-circle-inner {
  position: absolute;
  inset: 52px;
  background: radial-gradient(circle, rgba(244, 63, 94, 0.25) 0%, rgba(139, 92, 246, 0.15) 60%, transparent 80%);
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 35px rgba(244, 63, 94, 0.4);
}

@keyframes sigilSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes sigilSpinRev {
  from { transform: rotate(360deg); }
  to { transform: rotate(0deg); }
}

.hero-stats-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(15, 22, 38, 0.45);
  backdrop-filter: blur(10px);
  padding: 1.5rem 2rem;
  border-radius: var(--radius-md);
  max-width: 760px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fb7185;
  text-shadow: 0 0 16px rgba(251, 113, 133, 0.5);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ================= 通用区块标题 ================= */
.section-wrapper {
  position: relative;
  padding: 5rem 0;
  z-index: 1;
}

.section-wrapper.alt-bg {
  background: rgba(12, 18, 32, 0.65);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-amber);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.625rem;
  padding: 0.2rem 0.75rem;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid var(--border-amber);
  border-radius: var(--radius-sm);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-pure);
  letter-spacing: -0.01em;
  margin-bottom: 0.875rem;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ================= 特性卡片网格 (4卡 - 3D 浮动反馈) ================= */
.grid-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  box-shadow: var(--shadow-card);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(244, 63, 94, 0.6), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(244, 63, 94, 0.4);
  background: var(--bg-card-hover);
  box-shadow: 0 16px 40px -10px rgba(0, 0, 0, 0.7), 0 0 20px rgba(244, 63, 94, 0.2);
}

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

.feature-icon-box {
  width: 48px;
  height: 48px;
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid var(--border-maple);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: #fb7185;
  box-shadow: 0 0 16px rgba(244, 63, 94, 0.25);
  transition: transform 0.25s ease;
}

.feature-card:hover .feature-icon-box {
  transform: scale(1.1) rotate(4deg);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-pure);
  margin-bottom: 0.75rem;
}

.feature-text {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ================= 使用场景卡 (4卡 - 和风灵境印记) ================= */
.grid-scenarios {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.scenario-card {
  background: rgba(16, 23, 40, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all 0.3s ease;
}

.scenario-card:hover {
  border-color: rgba(245, 158, 11, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6), 0 0 16px rgba(245, 158, 11, 0.15);
}

.scenario-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.scenario-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-pure);
}

.scenario-device {
  font-size: 0.8125rem;
  font-weight: 700;
  color: #fde047;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-sm);
}

.scenario-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ================= 流媒体与 AI 加速支持 ================= */
.grid-support {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.support-box {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem;
}

.support-title {
  font-size: 1.3125rem;
  font-weight: 700;
  color: var(--text-pure);
  margin-bottom: 0.875rem;
}

.support-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.65;
}

.support-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.support-tag-item {
  font-size: 0.8125rem;
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 0.35rem 0.875rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: all 0.2s ease;
}

.support-tag-item:hover {
  background: rgba(6, 182, 212, 0.15);
  border-color: rgba(6, 182, 212, 0.4);
  color: #67e8f9;
}

/* ================= 定价卡片 (3档 - 热门档位灵能结界) ================= */
.grid-pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.5rem 1.875rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.2);
}

.pricing-card.featured {
  border: 2px solid #e11d48;
  background: linear-gradient(180deg, rgba(225, 29, 72, 0.08) 0%, rgba(15, 22, 38, 0.92) 100%);
  box-shadow: 0 16px 45px -8px rgba(225, 29, 72, 0.3), 0 0 25px rgba(225, 29, 72, 0.2);
}

.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #e11d48, #be123c);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 0.25rem 1rem;
  border-radius: 999px;
  box-shadow: 0 0 14px rgba(225, 29, 72, 0.6);
  white-space: nowrap;
}

.pricing-plan-name {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-pure);
  margin-bottom: 0.5rem;
}

.pricing-plan-target {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.pricing-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-bottom: 1.875rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.pricing-currency {
  font-size: 1.375rem;
  font-weight: 700;
  color: #fb7185;
}

.pricing-amount {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--text-pure);
  line-height: 1;
}

.pricing-period {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  margin-bottom: 2.25rem;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.pricing-feature-item svg {
  flex-shrink: 0;
  color: #fb7185;
}

.pricing-cta {
  width: 100%;
}

/* ================= FAQ 区域 (无障碍手风琴) ================= */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color 0.2s ease;
}

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

.faq-item.active {
  background: rgba(255, 255, 255, 0.02);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.375rem 1.75rem;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-pure);
  text-align: left;
  cursor: pointer;
}

.faq-question:hover {
  color: #fb7185;
}

.faq-chevron {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.25s ease, color 0.25s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: #fb7185;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer-inner {
  padding: 0 1.75rem 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-muted);
}

/* ================= 尾部 Final CTA ================= */
.final-cta-section {
  position: relative;
  padding: 5.5rem 0;
  background: radial-gradient(circle at 50% 50%, rgba(225, 29, 72, 0.15) 0%, rgba(9, 13, 22, 0.95) 75%);
  border-top: 1px solid rgba(244, 63, 94, 0.2);
  border-bottom: 1px solid var(--border-subtle);
  text-align: center;
  z-index: 1;
}

.final-cta-inner {
  max-width: 720px;
  margin: 0 auto;
}

.final-cta-title {
  font-size: 2.375rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 1.125rem;
  text-shadow: 0 0 30px rgba(244, 63, 94, 0.35);
}

.final-cta-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
  line-height: 1.7;
}

/* ================= 移动端吸底 CTA ================= */
.mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(9, 13, 22, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid rgba(244, 63, 94, 0.3);
  padding: 0.75rem 1.25rem;
  z-index: 99;
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.6);
  transform: translateY(100%);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-bottom-bar.visible {
  transform: translateY(0);
}

.mobile-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.mobile-bar-info {
  display: flex;
  flex-direction: column;
}

.mobile-bar-brand {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-pure);
}

.mobile-bar-hint {
  font-size: 0.75rem;
  color: #fb7185;
}

.mobile-bar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.375rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #e11d48, #be123c);
  border-radius: var(--radius-sm);
  box-shadow: 0 0 16px rgba(225, 29, 72, 0.5);
  white-space: nowrap;
}

/* ================= 页脚 ================= */
.site-footer {
  background-color: #060910;
  padding: 4rem 0 2.5rem;
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-top: 1rem;
  max-width: 360px;
}

.footer-col-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-pure);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-link-item {
  margin-bottom: 0.75rem;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.footer-link:hover {
  color: #fb7185;
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 0.875rem;
}

/* ================= 文章与内部页面排版 ================= */
.page-header {
  padding: 3.5rem 0 2.5rem;
  background: rgba(12, 18, 32, 0.75);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  z-index: 1;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.breadcrumb-nav a {
  color: var(--text-muted);
}

.breadcrumb-nav a:hover {
  color: #fb7185;
}

.page-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 0.875rem;
  line-height: 1.3;
}

.page-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.article-layout {
  padding: 3.5rem 0 4.5rem;
  position: relative;
  z-index: 1;
}

.article-main {
  max-width: 860px;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 3rem;
  box-shadow: var(--shadow-card);
}

.article-content h2 {
  font-size: 1.5625rem;
  font-weight: 700;
  color: var(--text-pure);
  margin-top: 2.5rem;
  margin-bottom: 1.125rem;
  padding-bottom: 0.625rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fb7185;
  margin-top: 1.75rem;
  margin-bottom: 0.875rem;
}

.article-content p {
  font-size: 1rem;
  line-height: 1.8;
  color: #cbd5e1;
  margin-bottom: 1.35rem;
}

.article-content ul,
.article-content ol {
  margin-bottom: 1.35rem;
  padding-left: 1.5rem;
  color: #cbd5e1;
  line-height: 1.8;
}

.article-content li {
  margin-bottom: 0.5rem;
}

.article-callout {
  background: rgba(244, 63, 94, 0.08);
  border-left: 4px solid #e11d48;
  padding: 1.35rem 1.625rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.75rem 0;
  font-size: 0.9375rem;
  color: #fecdd3;
  line-height: 1.75;
}

.article-callout p:last-child {
  margin-bottom: 0;
}

.article-table-wrap {
  overflow-x: auto;
  margin: 1.75rem 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: rgba(11, 17, 30, 0.7);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  text-align: left;
}

.article-table th {
  background: rgba(255, 255, 255, 0.05);
  font-weight: 700;
  color: var(--text-pure);
  padding: 0.875rem 1.125rem;
  border-bottom: 1px solid var(--border-subtle);
}

.article-table td {
  padding: 0.875rem 1.125rem;
  border-bottom: 1px solid var(--border-subtle);
  color: #cbd5e1;
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(225, 29, 72, 0.12) 0%, rgba(139, 92, 246, 0.08) 100%);
  border: 1px solid rgba(244, 63, 94, 0.35);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  text-align: center;
  margin: 3rem 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.article-cta-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-pure);
  margin-bottom: 0.625rem;
}

.article-cta-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.article-internal-links {
  border-top: 1px solid var(--border-subtle);
  margin-top: 3rem;
  padding-top: 1.75rem;
}

.internal-links-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-pure);
  margin-bottom: 1rem;
}

.internal-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.internal-link-item {
  font-size: 0.9375rem;
}

/* ================= 指南索引页网格 ================= */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
  margin-top: 2.25rem;
}

.guide-item-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

.guide-item-card:hover {
  transform: translateY(-4px);
  border-color: rgba(244, 63, 94, 0.4);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6), 0 0 16px rgba(244, 63, 94, 0.2);
}

.guide-category {
  font-size: 0.75rem;
  font-weight: 700;
  color: #fb7185;
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid var(--border-maple);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 0.875rem;
}

.guide-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-pure);
  margin-bottom: 0.75rem;
}

.guide-title a {
  color: var(--text-pure);
}

.guide-title a:hover {
  color: #fb7185;
}

.guide-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.guide-read-link {
  font-size: 0.875rem;
  font-weight: 700;
  color: #fb7185;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.guide-read-link:hover {
  color: #fda4af;
  transform: translateX(3px);
}

/* ================= 响应式适配 ================= */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.375rem;
  }
  
  .grid-pricing {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: rgba(9, 13, 22, 0.97);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.125rem;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.7);
  }
  
  .nav-menu.show {
    display: flex;
  }
  
  .hero-section {
    padding: 3.5rem 0 2.5rem;
  }
  
  .hero-title {
    font-size: 1.875rem;
  }
  
  .hero-desc {
    font-size: 1rem;
  }
  
  .hero-stats-bar {
    flex-direction: column;
    gap: 1.25rem;
    padding: 1.25rem;
  }
  
  .grid-features,
  .grid-scenarios,
  .grid-support,
  .guides-grid {
    grid-template-columns: 1fr;
  }
  
  .mobile-bottom-bar {
    display: block;
  }
  
  body {
    padding-bottom: 64px;
  }
  
  .article-main {
    padding: 1.75rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}