/* ===================================================================
   快连官网 70_final - 全局样式表
   风格：几何抽象风格设计，琥珀色与深蓝配色，阶梯式递进布局，扁平化插画
   =================================================================== */

:root {
  /* 基础与深蓝体系 */
  --bg-deep-navy: #060B18;
  --bg-surface-navy: #0B132B;
  --bg-card-navy: #111D42;
  --bg-card-alt: #162452;
  --border-navy: rgba(255, 255, 255, 0.08);
  --border-navy-light: rgba(255, 255, 255, 0.15);
  
  /* 琥珀色体系 (Amber & Gold) */
  --amber-primary: #F59E0B;
  --amber-light: #FBBF24;
  --amber-glow: rgba(245, 158, 11, 0.25);
  --amber-border: rgba(245, 158, 11, 0.45);
  --amber-subtle-bg: rgba(245, 158, 11, 0.08);

  /* 辅助与强调色 */
  --emerald-accent: #10B981;
  --emerald-mint: #00E599;
  --emerald-glow: rgba(16, 185, 129, 0.25);
  
  --blue-primary: #0284C7;
  --blue-hover: #0369A1;

  /* 文字体系 */
  --text-white: #FFFFFF;
  --text-light: #E2E8F0;
  --text-muted: #94A3B8;
  --text-dark: #64748B;

  /* 字体与布局尺寸 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --container-max-w: 1180px;
  --border-radius: 12px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-family);
  background-color: var(--bg-deep-navy);
  color: var(--text-light);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  position: relative;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 背景光与几何网格：两团径向光（左蓝右绿）+ 抽象几何轻微网格 */
.geometric-ambient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.ambient-light-left-blue {
  position: absolute;
  top: -10%;
  left: -15%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.18) 0%, rgba(2, 132, 199, 0) 70%);
  filter: blur(80px);
}

.ambient-light-right-green {
  position: absolute;
  top: 5%;
  right: -15%;
  width: 750px;
  height: 750px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.16) 0%, rgba(16, 185, 129, 0) 70%);
  filter: blur(90px);
}

.ambient-light-center-amber {
  position: absolute;
  top: 40%;
  left: 30%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, rgba(245, 158, 11, 0) 70%);
  filter: blur(100px);
}

.geometric-grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 80%);
}

/* 容器通用 */
.container {
  width: 100%;
  max-width: var(--container-max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================================================================
   1. 顶栏：三栏 flex
   =================================================================== */
.site-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 11, 24, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-navy);
  padding: 14px 0;
}

.topbar-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* 左侧 Logo（几何抽象勋章） */
.brand-logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-geo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--amber-primary), var(--blue-primary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px var(--amber-glow);
  position: relative;
  overflow: hidden;
}

.brand-geo-icon::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 10px;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.5px;
  line-height: 1.1;
}

.brand-name span {
  color: var(--amber-primary);
}

.brand-badge-tag {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 1.2px;
}

/* 中间 6 个锚点链接 */
.nav-mid-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-mid-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
}

.nav-mid-links a:hover,
.nav-mid-links a.active {
  color: var(--amber-light);
}

.nav-mid-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--amber-primary);
  transition: var(--transition);
}

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

/* 右侧工具栏：文字链 + 主 CTA 蓝渐变 */
.nav-right-tools {
  display: flex;
  align-items: center;
  gap: 18px;
}

.lang-text-links {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
}

.lang-text-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.lang-text-links a:hover,
.lang-text-links a.active {
  color: var(--text-white);
  font-weight: 600;
}

.lang-sep {
  color: var(--text-dark);
  font-size: 0.8rem;
}

/* 顶栏主 CTA：蓝渐变（工具入口），与 Hero 绿按钮区分 */
.btn-topbar-blue-gradient {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #FFFFFF;
  text-decoration: none;
  border-radius: 8px;
  background: linear-gradient(135deg, #0284C7 0%, #0369A1 100%);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-topbar-blue-gradient:hover {
  background: linear-gradient(135deg, #0369A1 0%, #075985 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.45);
}

/* ===================================================================
   2. Hero：居中漏斗结构 + 几何抽象扁平插画
   =================================================================== */
.hero-funnel {
  padding: 70px 0 50px;
  text-align: center;
  position: relative;
}

.hero-content-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 960px;
  margin: 0 auto;
}

/* 眉题胶囊 */
.hero-brow-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--amber-border);
  color: var(--amber-light);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 24px;
}

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

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

/* 单一 H1 超大标题 */
.hero-giant-h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: 900;
  color: var(--text-white);
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero-giant-h1 .gradient-text-amber {
  background: linear-gradient(135deg, #FBBF24 0%, #F59E0B 50%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 两行卖点 */
.hero-two-lines {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.hero-two-lines span {
  color: var(--text-light);
  font-weight: 500;
}

/* 双按钮 */
.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

/* Hero 绿主按钮（情感转化） */
.btn-hero-green-solid {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 34px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #061A12;
  text-decoration: none;
  background: linear-gradient(135deg, var(--emerald-mint) 0%, var(--emerald-accent) 100%);
  border-radius: 10px;
  box-shadow: 0 0 24px var(--emerald-glow), 0 8px 18px rgba(0, 0, 0, 0.4);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-hero-green-solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px var(--emerald-glow), 0 12px 24px rgba(0, 0, 0, 0.5);
}

/* 次按钮：幽灵描边 */
.btn-hero-ghost-amber {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--amber-light);
  text-decoration: none;
  background: rgba(245, 158, 11, 0.05);
  border: 1px solid var(--amber-border);
  border-radius: 10px;
  transition: var(--transition);
}

.btn-hero-ghost-amber:hover {
  background: rgba(245, 158, 11, 0.12);
  color: #FFFFFF;
  border-color: var(--amber-primary);
  transform: translateY(-2px);
}

/* 平台说明 */
.hero-platforms-note {
  font-size: 0.86rem;
  color: var(--text-dark);
  margin-bottom: 40px;
}

.hero-platforms-note strong {
  color: var(--text-muted);
}

/* 核心视觉：几何抽象扁平化插画 (Flat Vector Illustration) */
.hero-flat-illustration-wrap {
  width: 100%;
  max-width: 860px;
  margin: 0 auto 46px;
  padding: 24px;
  background: linear-gradient(180deg, rgba(17, 29, 66, 0.6) 0%, rgba(11, 19, 43, 0.8) 100%);
  border: 1px solid var(--border-navy-light);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
}

.hero-flat-illustration-wrap::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--amber-primary), var(--emerald-accent), transparent);
}

.illustration-svg-box {
  width: 100%;
  height: auto;
  display: block;
}

/* 4 个数据砖限制在 900px 内，比上方标题区更收，像底座 */
.hero-four-metrics-base {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: rgba(11, 19, 43, 0.9);
  padding: 20px;
  border-radius: 14px;
  border: 1px solid var(--border-navy-light);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.metric-brick-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 10px 8px;
  border-right: 1px solid var(--border-navy);
}

.metric-brick-item:last-child {
  border-right: none;
}

.brick-num {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--amber-light);
  line-height: 1.1;
  font-family: monospace, sans-serif;
}

.brick-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ===================================================================
   3. 功能区：.sec-head 居中 760px + 8 张同构卡片
   =================================================================== */
.features-section {
  padding: 80px 0;
  position: relative;
}

.sec-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.sec-label-en {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--amber-primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.sec-head h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.25;
  margin-bottom: 14px;
}

.sec-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 8 张同构卡片：48px 图标、粗标题、两行说明 */
.eight-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.isomorphic-card {
  background: var(--bg-card-navy);
  border: 1px solid var(--border-navy);
  border-radius: 12px;
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.isomorphic-card:hover {
  transform: translateY(-4px);
  border-color: var(--amber-border);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.card-icon-48 {
  width: 48px;
  height: 48px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid var(--amber-border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber-light);
  margin-bottom: 18px;
  flex-shrink: 0;
}

.card-bold-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
  line-height: 1.3;
}

.card-two-line-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ===================================================================
   4. 场景区：2 列横向卡（左图标、右文案），很淡的蓝渐变背景
   =================================================================== */
.scenes-section {
  padding: 85px 0;
  background: linear-gradient(180deg, rgba(3, 64, 120, 0.12) 0%, rgba(10, 17, 40, 0.3) 100%);
  border-top: 1px solid var(--border-navy);
  border-bottom: 1px solid var(--border-navy);
  position: relative;
}

.scenes-horizontal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.scene-h-card {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  background: rgba(17, 29, 66, 0.7);
  border: 1px solid var(--border-navy-light);
  border-radius: 14px;
  padding: 30px;
  transition: var(--transition);
}

.scene-h-card:hover {
  border-color: var(--amber-primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.3);
}

.scene-left-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.25), rgba(245, 158, 11, 0.25));
  border: 1px solid var(--amber-border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber-light);
  flex-shrink: 0;
}

.scene-right-content {
  flex: 1;
}

.scene-card-h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

.scene-card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 场景图解展示条（嵌入 1.webp） */
.scene-visual-banner {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: center;
  background: var(--bg-card-navy);
  border: 1px solid var(--border-navy-light);
  border-radius: 16px;
  padding: 28px;
}

.scene-visual-banner img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--border-navy);
  object-fit: cover;
  display: block;
}

.scene-visual-text h4 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
}

.scene-visual-text p {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

/* ===================================================================
   5. 信任区：4 个大数字 + 3 条评价卡 + 胶囊标签
   =================================================================== */
.reviews-section {
  padding: 85px 0;
  position: relative;
}

.trust-four-numbers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 50px;
}

.trust-num-box {
  background: var(--bg-card-navy);
  border: 1px solid var(--border-navy);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
}

.trust-digit {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--amber-light);
  line-height: 1.1;
  margin-bottom: 6px;
  font-family: monospace, sans-serif;
}

.trust-digit-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 3 条评价卡 */
.three-reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.review-card {
  background: var(--bg-card-navy);
  border: 1px solid var(--border-navy);
  border-radius: 14px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.review-card:hover {
  border-color: var(--amber-border);
  transform: translateY(-3px);
}

.review-stars {
  color: var(--amber-primary);
  font-size: 1rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-quote {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 20px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar-initials {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--amber-primary), var(--blue-primary));
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.author-info-wrap h5 {
  font-size: 0.95rem;
  color: var(--text-white);
  font-weight: 600;
}

.author-info-wrap p {
  font-size: 0.78rem;
  color: var(--text-dark);
}

/* 信任区结合 2.webp 和 3.webp 展示横条 */
.trust-media-double-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.trust-media-card {
  background: var(--bg-card-navy);
  border: 1px solid var(--border-navy);
  border-radius: 14px;
  overflow: hidden;
  padding: 16px;
}

.trust-media-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: 8px;
  display: block;
  margin-bottom: 12px;
}

.trust-media-card h4 {
  font-size: 1.1rem;
  color: var(--text-white);
  margin-bottom: 6px;
}

.trust-media-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 胶囊标签行 */
.trust-pills-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.trust-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-navy-light);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 500;
}

.trust-pill-tag svg {
  color: var(--emerald-accent);
}

/* ===================================================================
   6. 定价：四列等高（周/月/季/年），季套餐 .hot 高亮
   =================================================================== */
.pricing-section {
  padding: 85px 0;
  position: relative;
}

.pricing-four-columns-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}

.pricing-plan-card {
  background: var(--bg-card-navy);
  border: 1px solid var(--border-navy);
  border-radius: 16px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pricing-plan-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-navy-light);
}

/* 季套餐 .hot：薄荷绿描边、淡绿渐变底、外发光、标「热门」 */
.pricing-plan-card.hot {
  border: 2px solid var(--emerald-mint);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.12) 0%, rgba(11, 19, 43, 0.95) 100%);
  box-shadow: 0 0 32px var(--emerald-glow), 0 12px 30px rgba(0, 0, 0, 0.4);
  transform: scale(1.03);
  z-index: 2;
}

.pricing-badge-hot {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--emerald-mint), var(--emerald-accent));
  color: #061A12;
  font-size: 0.76rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 1px;
}

/* 年套餐标「最佳性价比」，视觉权重弱于季套餐 */
.pricing-badge-annual {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid var(--border-navy-light);
  color: var(--text-light);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}

.plan-name-h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}

.plan-price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
}

.plan-currency {
  font-size: 1.2rem;
  color: var(--text-white);
  font-weight: 700;
}

.plan-big-num {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--text-white);
  line-height: 1;
  font-family: monospace, sans-serif;
}

.plan-unit {
  font-size: 0.86rem;
  color: var(--text-dark);
}

.plan-original-del {
  font-size: 0.85rem;
  color: var(--text-dark);
  text-decoration: line-through;
  margin-bottom: 20px;
}

.plan-features-list {
  list-style: none;
  margin-bottom: 28px;
  flex: 1;
}

.plan-features-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.plan-features-list li svg {
  color: var(--emerald-accent);
  flex-shrink: 0;
}

/* 全宽幽灵按钮 */
.btn-ghost-fullwidth {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px;
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
  background: transparent;
  border: 1px solid var(--border-navy-light);
  color: var(--text-light);
  transition: var(--transition);
}

.btn-ghost-fullwidth:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border-color: var(--amber-primary);
}

.pricing-plan-card.hot .btn-ghost-fullwidth {
  background: linear-gradient(135deg, var(--emerald-mint), var(--emerald-accent));
  border: none;
  color: #061A12;
}

.pricing-plan-card.hot .btn-ghost-fullwidth:hover {
  box-shadow: 0 0 16px var(--emerald-glow);
  transform: translateY(-1px);
}

/* ===================================================================
   7. 下载：桌面 5 列平台卡 + Android 绿按钮高亮 + 扫码警示
   =================================================================== */
.download-section {
  padding: 85px 0;
  position: relative;
}

.download-five-columns-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 30px;
}

.platform-download-card {
  background: var(--bg-card-navy);
  border: 1px solid var(--border-navy);
  border-radius: 12px;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: var(--transition);
}

.platform-download-card:hover {
  border-color: var(--amber-border);
  transform: translateY(-3px);
}

.plat-os-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 14px;
  color: var(--text-light);
}

.plat-os-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 4px;
}

.plat-os-ver {
  font-size: 0.78rem;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.btn-plat-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 10px 8px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-navy-light);
  color: var(--text-light);
  transition: var(--transition);
}

.btn-plat-download:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
}

/* Android 用绿按钮高亮 */
.btn-plat-download.android-highlight {
  background: linear-gradient(135deg, var(--emerald-mint), var(--emerald-accent));
  color: #061A12;
  font-weight: 700;
  border: none;
  box-shadow: 0 0 16px var(--emerald-glow);
}

.btn-plat-download.android-highlight:hover {
  box-shadow: 0 0 24px var(--emerald-glow);
  transform: translateY(-1px);
}

/* 二维码 + 警示文案条 */
.qr-alert-strip {
  background: rgba(17, 29, 66, 0.6);
  border: 1px solid var(--border-navy-light);
  border-radius: 12px;
  padding: 20px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.qr-code-placeholder {
  width: 72px;
  height: 72px;
  background: #FFFFFF;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.qr-code-placeholder svg {
  width: 60px;
  height: 60px;
}

.qr-alert-content {
  flex: 1;
}

.qr-alert-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--amber-light);
  margin-bottom: 4px;
}

.qr-alert-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ===================================================================
   8. FAQ：6 个类别、每类 2 题，原生 details，薄荷绿边框，6-7 步清单
   =================================================================== */
.faq-section {
  padding: 85px 0;
  position: relative;
}

.faq-categories-wrapper {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.faq-cat-block {
  background: var(--bg-surface-navy);
  border: 1px solid var(--border-navy);
  border-radius: 14px;
  padding: 24px;
}

.faq-cat-header {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--amber-light);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.faq-cat-header span {
  font-size: 0.78rem;
  color: var(--text-dark);
  font-family: monospace, sans-serif;
}

/* 原生 details 手风琴 */
.faq-item-details {
  border: 1px solid var(--border-navy);
  background: var(--bg-card-navy);
  border-radius: 8px;
  margin-bottom: 12px;
  transition: border-color 0.2s ease;
  overflow: hidden;
}

.faq-item-details:last-child {
  margin-bottom: 0;
}

/* 展开项变成薄荷绿边框 */
.faq-item-details[open] {
  border-color: var(--emerald-mint);
  box-shadow: 0 0 16px rgba(0, 229, 153, 0.15);
}

.faq-item-summary {
  padding: 16px 20px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-white);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item-summary::-webkit-details-marker {
  display: none;
}

.faq-item-summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.faq-item-details[open] .faq-item-summary::after {
  content: "−";
  color: var(--emerald-mint);
}

.faq-steps-list-body {
  padding: 0 20px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.faq-steps-list-body ol {
  padding-left: 20px;
  margin-top: 14px;
}

.faq-steps-list-body li {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 8px;
}

.faq-steps-list-body li strong {
  color: var(--text-light);
}

/* ===================================================================
   9. 页脚：先居中再转化，再进入 #05080f 深色营销站页脚
   =================================================================== */
.footer-pre-cta {
  padding: 60px 0;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-deep-navy) 0%, #05080F 100%);
  border-top: 1px solid var(--border-navy);
}

.footer-pre-cta h3 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
}

.footer-pre-cta p {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.footer-pre-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.site-deep-footer {
  background-color: #05080F;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 60px 0 30px;
}

.footer-four-cols-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-col-about p {
  font-size: 0.88rem;
  color: var(--text-dark);
  line-height: 1.6;
  margin-top: 14px;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 18px;
}

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

.footer-links-ul li {
  margin-bottom: 10px;
}

.footer-links-ul a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
}

.footer-links-ul a:hover {
  color: var(--amber-light);
}

.footer-bottom-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-dark);
  flex-wrap: wrap;
  gap: 12px;
}

/* ===================================================================
   响应式断点优化
   =================================================================== */
@media (max-width: 1024px) {
  .eight-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-four-columns-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .download-five-columns-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .hero-four-metrics-base {
    grid-template-columns: repeat(2, 1fr);
  }
  .metric-brick-item:nth-child(2) {
    border-right: none;
  }
  .metric-brick-item {
    border-bottom: 1px solid var(--border-navy);
  }
  .footer-four-cols-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-mid-links {
    display: none;
  }
  .scenes-horizontal-grid {
    grid-template-columns: 1fr;
  }
  .scene-visual-banner {
    grid-template-columns: 1fr;
  }
  .trust-four-numbers {
    grid-template-columns: repeat(2, 1fr);
  }
  .three-reviews-grid {
    grid-template-columns: 1fr;
  }
  .trust-media-double-grid {
    grid-template-columns: 1fr;
  }
  .pricing-four-columns-grid {
    grid-template-columns: 1fr;
  }
  .pricing-plan-card.hot {
    transform: none;
  }
  .download-five-columns-grid {
    grid-template-columns: 1fr;
  }
  .hero-four-metrics-base {
    grid-template-columns: 1fr;
  }
  .metric-brick-item {
    border-right: none;
  }
  .footer-four-cols-grid {
    grid-template-columns: 1fr;
  }
}