/* ====================================================================
   疾风云（JFCloud） — 天穹战姬·星痕守护 UI 视觉设计规范 (style.css)
   设计风格：天穹战姬 (Aero Valkyrie / Astral Angel Cyber-Fantasy)
   配色系统：平流层夜空 (#070d1e) + 能量战翼粉 (#f43f5e) + 电离青天蓝 (#00f2fe) + 琉璃金 (#fbbf24)
   ==================================================================== */

:root {
  --bg-deep: #070d1e;
  --bg-canvas: #0a1329;
  --bg-surface: #0f1c3d;
  --bg-surface-elevated: #15244d;
  --bg-glass: rgba(15, 28, 61, 0.72);
  --bg-glass-card: rgba(18, 33, 73, 0.65);
  
  --border-subtle: rgba(56, 189, 248, 0.15);
  --border-glow: rgba(244, 63, 94, 0.35);
  --border-cyan: rgba(0, 242, 254, 0.35);
  --border-gold: rgba(251, 191, 36, 0.3);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --color-valkyrie: #f43f5e;
  --color-valkyrie-glow: rgba(244, 63, 94, 0.45);
  --color-cyan: #00f2fe;
  --color-cyan-glow: rgba(0, 242, 254, 0.4);
  --color-blue: #38bdf8;
  --color-gold: #fbbf24;
  --color-emerald: #10b981;

  --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container-max: 1180px;

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(56, 189, 248, 0.1);
  --shadow-valkyrie: 0 0 25px rgba(244, 63, 94, 0.35);
  --shadow-cyan: 0 0 25px rgba(0, 242, 254, 0.3);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-deep);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at 50% 0%, #112048 0%, #070d1e 75%, #050814 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  position: relative;
}

/* 全站动态背景：星痕、星光与流星网格 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(1px 1px at 20px 30px, rgba(255, 255, 255, 0.8), rgba(0, 0, 0, 0)),
    radial-gradient(1.5px 1.5px at 140px 70px, rgba(0, 242, 254, 0.8), rgba(0, 0, 0, 0)),
    radial-gradient(1px 1px at 80px 220px, rgba(244, 63, 94, 0.8), rgba(0, 0, 0, 0)),
    radial-gradient(2px 2px at 280px 180px, rgba(251, 191, 36, 0.7), rgba(0, 0, 0, 0)),
    radial-gradient(1.5px 1.5px at 380px 320px, rgba(255, 255, 255, 0.8), rgba(0, 0, 0, 0));
  background-size: 450px 450px;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

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

a:hover {
  color: #70f7ff;
  text-shadow: 0 0 8px rgba(0, 242, 254, 0.5);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
  position: relative;
  z-index: 1;
}

/* ====================================================================
   HEADER & 导航
   ==================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 13, 30, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.site-header.scrolled {
  background: rgba(5, 10, 24, 0.94);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(0, 242, 254, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.brand-logo svg {
  filter: drop-shadow(0 0 10px rgba(0, 242, 254, 0.6));
  transition: transform 0.3s ease;
}

.brand-logo:hover svg {
  transform: rotate(8deg) scale(1.08);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 6px 0;
}

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

.nav-links a:hover,
.nav-links a.active {
  color: #ffffff;
}

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

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.menu-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s ease;
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* 移动端菜单抽屉 */
.mobile-nav {
  display: none;
  background: rgba(10, 19, 41, 0.98);
  border-bottom: 1px solid var(--border-subtle);
  padding: 20px;
}

.mobile-nav.open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

.mobile-nav-list a {
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 600;
  display: block;
  padding: 6px 0;
}

/* ====================================================================
   BUTTONS (高转化 CTA 按钮系统)
   ==================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  border: 1px solid transparent;
}

/* 触控涟漪动画 (Ripple) */
.btn .click-ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: ripple-grow 0.6s linear;
  background-color: rgba(255, 255, 255, 0.35);
  pointer-events: none;
}

@keyframes ripple-grow {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* 主 CTA：战姬能量粉霓光掠影 */
.btn-primary {
  background: linear-gradient(135deg, #f43f5e 0%, #e11d48 50%, #be123c 100%);
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(244, 63, 94, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.2);
}

.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: btn-shimmer 3.2s infinite;
}

@keyframes btn-shimmer {
  0% { left: -100%; }
  35% { left: 160%; }
  100% { left: 160%; }
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(244, 63, 94, 0.6), 0 0 15px rgba(244, 63, 94, 0.4);
}

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

/* 次级按钮：太空舱磨砂青蓝 */
.btn-secondary {
  background: rgba(15, 28, 61, 0.85);
  color: var(--text-primary) !important;
  border-color: var(--border-cyan);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-secondary:hover {
  background: rgba(21, 38, 80, 0.95);
  border-color: var(--color-cyan);
  box-shadow: 0 0 16px rgba(0, 242, 254, 0.35);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(1px);
}

.btn-large {
  padding: 14px 34px;
  font-size: 1.075rem;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* ====================================================================
   HERO 区块 (天穹战姬舞台与全息控制台)
   ==================================================================== */
.hero-section {
  padding: 68px 0 76px;
  position: relative;
  overflow: hidden;
}

/* 顶部星轨光晕背景 */
.hero-section::before {
  content: "";
  position: absolute;
  top: -150px;
  right: -80px;
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(244, 63, 94, 0.22) 0%, rgba(0, 242, 254, 0.12) 40%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

/* 战姬领航标语徽章 */
.hero-tagline-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(244, 63, 94, 0.35);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
  color: #fca5a5;
  margin-bottom: 22px;
  box-shadow: 0 0 15px rgba(244, 63, 94, 0.2);
}

.hero-beacon-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-valkyrie);
  box-shadow: 0 0 10px var(--color-valkyrie);
  animation: pulse-beacon 1.8s infinite;
}

@keyframes pulse-beacon {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-content h1 {
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.25;
  color: #ffffff;
  margin-bottom: 20px;
  letter-spacing: -0.015em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hero-content h1 .hero-gradient-text {
  background: linear-gradient(120deg, #ffffff 10%, #70f7ff 50%, #f43f5e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 36px;
}

.hero-meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.hero-meta-item svg {
  color: var(--color-cyan);
  filter: drop-shadow(0 0 4px rgba(0, 242, 254, 0.6));
  flex-shrink: 0;
}

/* ====================================================================
   HERO 右侧：天穹战姬「依卡」3D 互动舞台与全息控制台
   ==================================================================== */
.hero-valkyrie-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 战姬全息光环背板 */
.valkyrie-magic-halo {
  position: absolute;
  top: 12%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 380px;
  height: 380px;
  border-radius: 50%;
  border: 1.5px dashed rgba(244, 63, 94, 0.4);
  box-shadow: 0 0 40px rgba(244, 63, 94, 0.25), inset 0 0 40px rgba(0, 242, 254, 0.15);
  animation: halo-rotate 28s linear infinite;
  pointer-events: none;
  z-index: 1;
}

.valkyrie-magic-halo::after {
  content: "";
  position: absolute;
  inset: 20px;
  border-radius: 50%;
  border: 1px solid rgba(0, 242, 254, 0.35);
  animation: halo-rotate-rev 20s linear infinite;
}

@keyframes halo-rotate {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes halo-rotate-rev {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

/* 战姬立绘卡片 */
.valkyrie-character-card {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 440px;
  border-radius: var(--radius-lg);
  background: var(--bg-glass-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-card), 0 0 30px rgba(244, 63, 94, 0.2);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.valkyrie-character-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), 0 0 45px rgba(244, 63, 94, 0.35);
}

.valkyrie-status-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  background: rgba(10, 19, 41, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.775rem;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.valkyrie-online-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-cyan);
}

.valkyrie-online-tag::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-cyan);
  box-shadow: 0 0 8px var(--color-cyan);
}

.valkyrie-frame-code {
  color: #fca5a5;
  font-family: monospace;
}

.valkyrie-portrait-wrap {
  position: relative;
  width: 100%;
  height: 380px;
  overflow: hidden;
  background: radial-gradient(circle at 50% 60%, rgba(244, 63, 94, 0.15), rgba(7, 13, 30, 0.95));
}

.valkyrie-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.5s ease;
}

.valkyrie-character-card:hover .valkyrie-portrait-img {
  transform: scale(1.03);
}

/* 战姬交互对白气泡面板 */
.valkyrie-dialogue-panel {
  padding: 18px 20px;
  background: rgba(10, 19, 41, 0.92);
  border-top: 1px solid var(--border-subtle);
}

.dialogue-speaker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.speaker-avatar-thumb {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1.5px solid var(--color-valkyrie);
  box-shadow: 0 0 10px rgba(244, 63, 94, 0.4);
  object-fit: cover;
}

.speaker-info {
  display: flex;
  flex-direction: column;
}

.speaker-name {
  font-size: 0.925rem;
  font-weight: 800;
  color: #ffffff;
}

.speaker-sub {
  font-size: 0.75rem;
  color: var(--color-cyan);
}

.dialogue-bubble-box {
  background: rgba(21, 36, 77, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.9rem;
  line-height: 1.6;
  color: #e2e8f0;
  margin-bottom: 14px;
  min-height: 58px;
  transition: all 0.25s ease;
}

.dialogue-chips-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.valkyrie-chip-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.valkyrie-chip-btn:hover,
.valkyrie-chip-btn.active {
  background: rgba(244, 63, 94, 0.2);
  border-color: var(--color-valkyrie);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(244, 63, 94, 0.35);
}

/* ====================================================================
   SECTIONS 通用容器与排版
   ==================================================================== */
.section {
  padding: 80px 0;
  position: relative;
}

.section-alt {
  background: rgba(10, 19, 41, 0.55);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-head {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 52px;
}

.section-head-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: 2.15rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.section-head p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ====================================================================
   MODULE: 流媒体与 AI 支持 (STREAMING & AI)
   ==================================================================== */
.support-dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.support-panel {
  background: var(--bg-glass-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.support-panel:hover {
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-card), 0 0 25px rgba(0, 242, 254, 0.15);
}

.support-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-valkyrie));
  opacity: 0.8;
}

.support-panel h3 {
  font-size: 1.45rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.support-panel p {
  font-size: 0.975rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

.badge-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  color: #ffffff;
  transition: all 0.2s ease;
}

.badge-item:hover {
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.25);
  transform: translateY(-2px);
}

/* ====================================================================
   MODULE: 核心功能特性卡 (FEATURES - 4 张卡)
   ==================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-glass-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(244, 63, 94, 0.12) 0%, transparent 60%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card), 0 0 25px rgba(244, 63, 94, 0.25);
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(244, 63, 94, 0.35);
  color: var(--color-valkyrie);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
  background: rgba(244, 63, 94, 0.22);
  box-shadow: 0 0 16px rgba(244, 63, 94, 0.4);
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ====================================================================
   MODULE: 定价方案 (PRICING - 3 档位)
   ==================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-glass-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-card), 0 0 25px rgba(0, 242, 254, 0.2);
}

/* 推荐档位突出：战姬能量粉霓光包裹 */
.pricing-card.featured {
  background: linear-gradient(180deg, rgba(28, 45, 92, 0.85) 0%, rgba(15, 28, 61, 0.95) 100%);
  border: 2px solid var(--color-valkyrie);
  box-shadow: var(--shadow-card), 0 0 35px rgba(244, 63, 94, 0.3);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-6px);
  box-shadow: var(--shadow-card), 0 0 45px rgba(244, 63, 94, 0.45);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, #f43f5e, #fb7185);
  color: #ffffff;
  font-size: 0.775rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
  box-shadow: 0 0 16px rgba(244, 63, 94, 0.5);
  white-space: nowrap;
}

.pricing-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
  margin-bottom: 24px;
}

.pricing-audience {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-cyan);
  margin-bottom: 6px;
}

.pricing-card.featured .pricing-audience {
  color: #fca5a5;
}

.pricing-name {
  font-size: 1.5rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.pricing-price {
  font-size: 2.6rem;
  font-weight: 900;
  color: #ffffff;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.pricing-unit {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
}

.pricing-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 10px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.pricing-features li svg {
  color: var(--color-cyan);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-card.featured .pricing-features li svg {
  color: #fb7185;
}

/* ====================================================================
   MODULE: 使用场景卡 (SCENARIOS - 4 张卡)
   ==================================================================== */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.scenario-card {
  background: var(--bg-glass-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}

.scenario-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-card), 0 0 20px rgba(0, 242, 254, 0.2);
}

.scenario-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.scenario-device {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-cyan);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  padding: 3px 10px;
  border-radius: var(--radius-xs);
}

.scenario-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.scenario-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ====================================================================
   MODULE: FAQ 手风琴 (6 问)
   ==================================================================== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.25s ease;
}

.faq-item:hover {
  border-color: rgba(56, 189, 248, 0.35);
}

.faq-item.active {
  border-color: var(--color-cyan);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.15);
}

.faq-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 1.075rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s ease;
}

.faq-trigger:hover {
  background: rgba(255, 255, 255, 0.03);
}

.faq-trigger svg {
  transition: transform 0.3s ease;
  width: 20px;
  height: 20px;
  color: var(--color-cyan);
  flex-shrink: 0;
}

.faq-item.active .faq-trigger svg {
  transform: rotate(180deg);
  color: var(--color-valkyrie);
}

.faq-body {
  display: none;
  padding: 0 24px 22px;
  font-size: 0.975rem;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
}

.faq-item.active .faq-body {
  display: block;
}

/* ====================================================================
   FINAL CTA 转化区 (星际跃迁光门)
   ==================================================================== */
.final-cta-section {
  padding: 96px 0;
  background: radial-gradient(circle at 50% 50%, #172852 0%, #080e1e 75%);
  position: relative;
  overflow: hidden;
  text-align: center;
  border-top: 1px solid var(--border-subtle);
}

.final-cta-section::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 350px;
  background: radial-gradient(ellipse, rgba(244, 63, 94, 0.25) 0%, rgba(0, 242, 254, 0.15) 50%, transparent 80%);
  filter: blur(50px);
  pointer-events: none;
}

.final-cta-inner {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.final-cta-inner h2 {
  font-size: 2.5rem;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: -0.015em;
}

.final-cta-inner p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.7;
}

/* ====================================================================
   移动端吸底 CTA
   ==================================================================== */
.sticky-mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(8, 14, 32, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-cyan);
  padding: 12px 18px;
  z-index: 99;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.6);
}

.sticky-mobile-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.sticky-info {
  display: flex;
  flex-direction: column;
}

.sticky-title {
  font-size: 0.9rem;
  font-weight: 800;
  color: #ffffff;
}

.sticky-sub {
  font-size: 0.775rem;
  color: var(--color-cyan);
}

/* ====================================================================
   FOOTER (底部导航与合规披露)
   ==================================================================== */
.site-footer {
  background: #050914;
  border-top: 1px solid var(--border-subtle);
  padding: 56px 0 36px;
  margin-top: auto;
  position: relative;
  z-index: 2;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 14px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ====================================================================
   文章页与独立法律页面样式支持 (DETAIL PAGES)
   ==================================================================== */
.article-container,
.page-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 56px 20px 88px;
  position: relative;
  z-index: 2;
}

.article-header,
.page-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 28px;
  margin-bottom: 40px;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.article-header h1,
.page-header h1 {
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1.35;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: -0.015em;
}

.article-meta-row,
.page-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.article-content,
.page-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #e2e8f0;
}

.article-intro {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #ffffff;
  background: rgba(244, 63, 94, 0.08);
  border-left: 4px solid var(--color-valkyrie);
  padding: 20px 24px;
  margin-bottom: 36px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-content h2,
.page-content h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #ffffff;
  margin-top: 48px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-content p,
.page-content p {
  margin-bottom: 22px;
}

.article-content ul,
.page-content ul,
.article-content ol,
.page-content ol {
  margin-bottom: 24px;
  padding-left: 28px;
}

.article-content li,
.page-content li {
  margin-bottom: 10px;
}

.article-faq-box {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  margin: 44px 0;
}

.article-faq-box h3 {
  margin-top: 0;
  margin-bottom: 20px;
  font-size: 1.3rem;
  color: #ffffff;
}

.article-faq-item {
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-subtle);
}

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

.article-faq-q {
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.article-faq-a {
  color: var(--text-secondary);
  font-size: 0.975rem;
  line-height: 1.65;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(28, 45, 92, 0.7) 0%, rgba(15, 28, 61, 0.9) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 40px 28px;
  text-align: center;
  margin: 48px 0;
  box-shadow: 0 0 30px rgba(244, 63, 94, 0.2);
}

.article-cta-box h3 {
  font-size: 1.45rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.article-cta-box p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 24px;
}

.article-interlinks {
  border-top: 1px solid var(--border-subtle);
  padding-top: 32px;
  margin-top: 48px;
}

.article-interlinks h4 {
  font-size: 1.05rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.article-interlinks ul {
  list-style: none;
  padding-left: 0;
}

.article-interlinks li {
  margin-bottom: 10px;
}

/* 指南卡片网格 */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.guide-article-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}

.guide-article-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-card), 0 0 20px rgba(0, 242, 254, 0.2);
}

.guide-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.guide-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
  line-height: 1.45;
}

.guide-summary {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 22px;
  flex-grow: 1;
}

.guide-read-link {
  font-size: 0.925rem;
  font-weight: 700;
  color: var(--color-cyan);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.sitemap-group h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: #ffffff;
}

.sitemap-list {
  list-style: none;
  padding-left: 0;
}

.sitemap-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sitemap-list a {
  font-weight: 600;
  color: #e2e8f0;
}

.sitemap-url {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: monospace;
}

/* ====================================================================
   响应式断点 (RESPONSIVE BREAKPOINTS)
   ==================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-5px);
  }
  .scenarios-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .guides-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links,
  .header-cta-group .btn {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .hero-content h1 {
    font-size: 2.15rem;
  }
  .support-dual-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .scenarios-grid {
    grid-template-columns: 1fr;
  }
  .guides-grid {
    grid-template-columns: 1fr;
  }
  .sticky-mobile-cta {
    display: block;
  }
  body {
    padding-bottom: 64px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* 无障碍：减少动效模式 */
@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;
  }
}