/* ==========================================================================
   常用 API (CY-API) - SaaS 科技风落地页样式系统
   主题风格：Dark Tech Cyberpunk / 电影级丝滑整屏过渡 (Smooth Easing Fullpage)
   ========================================================================== */

:root {
  /* 基础调色板 */
  --bg-deep: #07090e;
  --bg-surface: #0d121f;
  --bg-card: rgba(15, 23, 42, 0.78);
  --bg-card-hover: rgba(24, 34, 56, 0.9);
  --bg-glass: rgba(255, 255, 255, 0.03);
  
  /* 边框与线条 */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-glow-blue: rgba(59, 130, 246, 0.4);
  --border-glow-purple: rgba(139, 92, 246, 0.5);
  --border-glow-emerald: rgba(16, 185, 129, 0.4);
  --border-glow-gold: rgba(245, 158, 11, 0.45);

  /* 文字颜色 */
  --text-main: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  /* 品牌色系（与 Logo-Infinity 极光青绿到电光蓝完美对齐） */
  --brand-cyan: #22d3ee;
  --brand-blue: #38bdf8;
  --brand-primary: #3b82f6;
  --brand-purple: #818cf8;
  --brand-emerald: #10b981;
  --brand-amber: #f59e0b;
  --brand-rose: #f43f5e;

  /* 核心渐变 */
  --grad-primary: linear-gradient(135deg, #22d3ee 0%, #38bdf8 50%, #818cf8 100%);
  --grad-fire: linear-gradient(135deg, #f59e0b 0%, #ef4444 50%, #ec4899 100%);
  --grad-emerald: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  --grad-purple: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
  
  /* 阴影效果 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --shadow-glow-cyan: 0 0 30px -5px rgba(34, 211, 238, 0.25);
  --shadow-glow-amber: 0 0 35px -5px rgba(245, 158, 11, 0.28);
  --shadow-glow-emerald: 0 0 30px -5px rgba(16, 185, 129, 0.25);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 字体系统 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Menlo, Monaco, Consolas, monospace;
}

/* 全局重置与全屏容器 (Fullpage Viewport Engine) */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden; /* 桌面端禁止默认生硬跳动，交由平滑位移动画接管 */
  font-size: 15px;
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* 硬件加速整屏滑动轨道 (Smooth Transform Track) */
.fullpage-track {
  width: 100%;
  height: 100%;
  position: relative;
  will-change: transform;
  /* 优雅平滑的缓动过渡曲线：起步顺畅，减速柔和 */
  transition: transform 0.85s cubic-bezier(0.22, 1, 0.36, 1);
}

/* 整屏分块核心容器 */
.snap-section {
  width: 100%;
  height: 100vh;
  min-height: 100vh;
  max-height: 100vh;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 76px 0 20px;
  overflow: hidden;
}

/* 背景科技星空网格与流光氛围 */
.bg-decor {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, #000 60%, transparent 100%);
}

.bg-glow-1 {
  position: absolute;
  top: -10%;
  left: 20%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, transparent 70%);
  filter: blur(80px);
  border-radius: 50%;
  animation: floatOrb 20s ease-in-out infinite alternate;
}

.bg-glow-2 {
  position: absolute;
  top: 40%;
  right: 15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.1) 0%, transparent 70%);
  filter: blur(90px);
  border-radius: 50%;
  animation: floatOrb 24s ease-in-out infinite alternate-reverse;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 30px) scale(1.05); }
  100% { transform: translate(-30px, 50px) scale(0.95); }
}

/* 页面通用布局 */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   顶部导航条 (Navbar)
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 68px;
  z-index: 100;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(7, 9, 14, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

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

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-svg-logo {
  height: 38px;
  width: auto;
  max-width: 175px;
  object-fit: contain;
  display: block;
}

.brand-api-badge {
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 7px;
  border-radius: 5px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.18) 0%, rgba(129, 140, 248, 0.18) 100%);
  color: var(--brand-cyan);
  border: 1px solid rgba(56, 189, 248, 0.35);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
  cursor: pointer;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-cyan);
  border-radius: 2px;
}

/* 右上角操作区：仅保留【登录】与【注册】 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 登录按钮 */
.btn-nav-login {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #e2e8f0;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-nav-login:hover {
  color: #fff;
  border-color: rgba(56, 189, 248, 0.45);
  background: rgba(56, 189, 248, 0.1);
  transform: translateY(-1px);
}

/* 注册按钮（高亮重点操作） */
.btn-nav-register {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius-sm);
  background: var(--grad-primary);
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.35);
  border: none;
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-nav-register:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(56, 189, 248, 0.55);
}

/* ==========================================================================
   侧边整屏悬浮指示器 (Fullpage Dot Indicator)
   ========================================================================== */
.fullpage-dots {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 90;
}

.dot-nav-item {
  position: relative;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all 0.25s ease;
}

.dot-nav-item:hover, .dot-nav-item.active {
  background: var(--brand-cyan);
  border-color: var(--brand-cyan);
  transform: scale(1.3);
  box-shadow: 0 0 10px var(--brand-cyan);
}

.dot-nav-item .dot-label {
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-medium);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  color: #e2e8f0;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.dot-nav-item:hover .dot-label {
  opacity: 1;
}

/* ==========================================================================
   精简版统一区块头部
   ========================================================================== */
.section-header-compact {
  text-align: center;
  margin-bottom: 24px;
}

.section-tag-compact {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand-cyan);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.section-title-compact {
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.section-desc-compact {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Screen 1: Hero 首屏（精炼高转化）
   ========================================================================== */
.hero-content-wrap {
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.hero-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  font-size: 0.8rem;
  color: #7dd3fc;
  margin-bottom: 20px;
}

.hero-pill-tag .pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-emerald);
  box-shadow: 0 0 8px var(--brand-emerald);
}

.hero-headline {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-summary {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 28px;
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}

.hero-summary strong {
  color: #f1f5f9;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 34px;
}

.hero-actions-sub {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-hero-main {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.98rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius-md);
  background: var(--grad-primary);
  box-shadow: 0 6px 24px rgba(56, 189, 248, 0.4);
  transition: all 0.25s ease;
  cursor: pointer;
  border: none;
}

.btn-hero-main:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.55);
}

.btn-hero-sub {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 500;
  color: #e2e8f0;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background: rgba(255, 255, 255, 0.04);
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-hero-sub:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
}

/* 信任指标紧凑条 */
.hero-trust-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  backdrop-filter: blur(12px);
}

.trust-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
}

.trust-cell-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(56, 189, 248, 0.1);
  color: var(--brand-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-cell-txt h4 {
  font-size: 0.86rem;
  font-weight: 700;
  color: #fff;
}

.trust-cell-txt p {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Screen 2: 三大订阅套餐屏 (Pricing Tiers) - 精炼卡片
   ========================================================================== */
.pricing-cards-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}

.p-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(14px);
  transition: all 0.3s ease;
}

.p-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-lg);
}

/* 站长推荐高亮（已移除顶部彩色横线） */
.p-card.featured {
  background: linear-gradient(180deg, rgba(26, 36, 56, 0.95) 0%, rgba(15, 23, 42, 0.95) 100%);
  border-color: rgba(245, 158, 11, 0.5);
  box-shadow: 0 0 35px -5px rgba(245, 158, 11, 0.22);
}

.p-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.badge-cyan { background: rgba(56, 189, 248, 0.12); color: #38bdf8; border: 1px solid rgba(56, 189, 248, 0.3); }
.badge-amber { background: rgba(245, 158, 11, 0.14); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.35); }
.badge-fire { background: var(--grad-fire); color: #fff; }

.p-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 2px;
}

.p-sub {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.p-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.p-price-sym { font-size: 1.25rem; font-weight: 700; color: #fff; }
.p-price-num { font-size: 2.3rem; font-weight: 800; font-family: var(--font-mono); color: #fff; line-height: 1; }
.p-price-unit { font-size: 0.8rem; color: var(--text-muted); margin-left: 2px; }
.p-price-tag {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

/* 核心参数栅格 (一行三列) */
.p-specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 12px;
}

.p-spec-item {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 6px;
  text-align: center;
}

.p-spec-label { font-size: 0.68rem; color: var(--text-muted); display: block; }
.p-spec-val { font-size: 0.84rem; font-weight: 700; color: #f1f5f9; font-family: var(--font-mono); white-space: nowrap; }

/* 算力高亮栏 */
.p-token-bar {
  background: rgba(56, 189, 248, 0.07);
  border: 1px dashed rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  margin-bottom: 14px;
}

.p-card.featured .p-token-bar {
  background: rgba(245, 158, 11, 0.09);
  border-color: rgba(245, 158, 11, 0.35);
}

.p-token-txt {
  font-size: 0.78rem;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-mono);
}

/* 精简核心清单 */
.p-feature-list {
  list-style: none;
  margin-bottom: 18px;
  flex-grow: 1;
}

.p-feature-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.79rem;
  color: #cbd5e1;
  margin-bottom: 7px;
  white-space: nowrap;
}

.p-feature-item span.icon {
  color: var(--brand-emerald);
  font-weight: bold;
}

.p-card.featured .p-feature-item span.icon {
  color: var(--brand-amber);
}

/* 按钮 */
.btn-p-cta {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 14px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-p-cta:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-p-cta.featured {
  background: var(--grad-fire);
  border: none;
  box-shadow: 0 4px 18px rgba(245, 158, 11, 0.4);
}

.btn-p-cta.featured:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(245, 158, 11, 0.55);
}

/* 套餐区域底部小字算力说明 */
.pricing-footnote {
  max-width: 960px;
  margin: 16px auto 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.76rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

.pricing-footnote svg {
  flex-shrink: 0;
  color: var(--brand-cyan);
}

.footnote-link {
  color: var(--brand-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.footnote-link:hover {
  color: #fff;
  text-shadow: 0 0 8px var(--brand-cyan);
}

/* ==========================================================================
   Screen 3: 随心按量直充屏 (Flexible Recharge)
   ========================================================================== */
.recharge-box {
  background: linear-gradient(135deg, rgba(16, 24, 39, 0.85) 0%, rgba(13, 20, 36, 0.95) 100%);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-glow-emerald);
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 36px;
  align-items: center;
}

.rc-left h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}

.rc-left p.desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 18px;
}

.rc-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rc-point-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.84rem;
  color: #e2e8f0;
}

.rc-point-item .rc-chk {
  color: var(--brand-emerald);
  font-weight: bold;
}

/* 右侧计算器 */
.rc-calc-card {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 22px;
}

.rc-calc-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.rc-calc-btns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.rc-btn-tier {
  padding: 8px 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.rc-btn-tier:hover {
  background: rgba(255, 255, 255, 0.09);
}

.rc-btn-tier.active {
  background: rgba(16, 185, 129, 0.18);
  border-color: var(--brand-emerald);
  color: #34d399;
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.3);
}

.rc-display-box {
  background: rgba(0, 0, 0, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rc-disp-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.rc-disp-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.28);
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.rc-dot-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 8px #38bdf8;
  display: inline-block;
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.75); }
}

.rc-disp-cache-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.rc-disp-body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.rc-disp-col {
  flex: 1;
  min-width: 0;
}

.rc-disp-col-right {
  text-align: right;
}

.rc-disp-sublabel {
  font-size: 0.72rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 3px;
  white-space: nowrap;
}

.rc-usd-amount {
  font-size: 1.35rem;
  font-weight: 800;
  color: #34d399;
  font-family: var(--font-mono);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.rc-cny-sub {
  font-size: 0.75rem;
  color: #94a3b8;
  display: block;
  margin-top: 2px;
  white-space: nowrap;
}

.rc-disp-arrow-sep {
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
  padding: 0 4px;
}

.rc-tokens-val {
  font-size: 1.18rem;
  font-weight: 800;
  color: #fff;
  font-family: var(--font-mono);
  white-space: nowrap;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.rc-tokens-ratio-sub {
  font-size: 0.68rem;
  color: #34d399;
  display: block;
  margin-top: 2px;
  white-space: nowrap;
}

.btn-rc-submit {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 18px;
  font-size: 0.92rem;
  font-weight: 700;
  color: #064e3b;
  background: #10b981;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-rc-submit:hover {
  background: #34d399;
  transform: translateY(-1px);
}

/* ==========================================================================
   Screen 4: 客户端生态接入屏 (Client Integration)
   ========================================================================== */
.eco-single-wrap {
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
}

.eco-card {
  background: #090d16;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
}

.eco-card-header {
  display: flex;
  align-items: center;
  background: #111726;
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px 18px;
  gap: 16px;
}

.terminal-dots {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.terminal-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.eco-tabs-bar {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  flex-grow: 1;
}

.eco-tab-btn {
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.eco-tab-btn:hover, .eco-tab-btn.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.eco-terminal-wrap {
  padding: 22px 26px;
  display: flex;
  flex-direction: column;
  min-height: 230px;
  justify-content: space-between;
}

.eco-terminal-code {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.7;
  color: #cbd5e1;
  overflow-x: auto;
  white-space: pre-wrap;
  margin-bottom: 16px;
}

.eco-terminal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  flex-wrap: wrap;
}

.eco-tip-txt {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.btn-eco-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand-cyan);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-eco-copy:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: rgba(56, 189, 248, 0.5);
  transform: translateY(-1px);
}

/* ==========================================================================
   Screen 5: 兑换指引与常见问题 FAQ (Redeem & FAQ & Footer)
   ========================================================================== */
.bottom-screen-content {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.steps-faq-row {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 28px;
  margin-bottom: 24px;
}

/* 3步指引 */
.steps-col h3, .faq-col h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.step-card-mini {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.step-tag-mini {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--brand-cyan);
  background: rgba(56, 189, 248, 0.1);
  padding: 3px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.step-info-mini h5 {
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
}

.step-info-mini p {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* FAQ 手风琴精简 */
.faq-col-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-card-mini {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-q-mini {
  padding: 10px 14px;
  font-size: 0.86rem;
  font-weight: 600;
  color: #e2e8f0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-card-mini.active .faq-q-mini {
  color: var(--brand-cyan);
}

.faq-a-mini {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
  padding: 0 14px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.faq-card-mini.active .faq-a-mini {
  max-height: 80px;
  padding-bottom: 10px;
}

/* 页脚紧凑条 */
.footer-compact {
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-compact a {
  color: var(--text-secondary);
  text-decoration: none;
  margin-left: 14px;
}

.footer-compact a:hover {
  color: #fff;
}

/* ==========================================================================
   通用弹窗 (Modal) 与 Toast
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: #0f172a;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  max-width: 440px;
  width: 100%;
  padding: 24px;
  position: relative;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
}

.modal-close:hover {
  color: #fff;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.modal-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  background: #1e293b;
  border: 1px solid var(--border-medium);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.25s ease;
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   响应式调整 (小屏幕与移动端深度排版优化，解决拥挤感)
   ========================================================================== */
@media (max-width: 992px) {
  html, body {
    overflow-y: auto !important;
    height: auto !important;
  }
  .fullpage-track {
    transform: none !important;
    transition: none !important;
  }
  .snap-section {
    height: auto !important;
    min-height: auto !important;
    max-height: none !important;
    padding: 70px 0 35px;
  }
  .pricing-cards-row {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
  .recharge-box {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }
  .eco-bench-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }
  .steps-faq-row {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }
  .fullpage-dots {
    display: none;
  }
  .hero-trust-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* 顶部导航条移动端精致瘦身 */
  .navbar {
    height: 56px;
  }
  .navbar .container {
    padding: 0 14px;
  }
  .brand-svg-logo {
    height: 28px;
    max-width: 120px;
  }
  .nav-links {
    display: none;
  }
  .nav-actions {
    gap: 8px;
  }
  .btn-nav-login {
    padding: 5px 12px;
    font-size: 0.82rem;
    gap: 4px;
  }
  .btn-nav-register {
    padding: 5px 14px;
    font-size: 0.82rem;
    gap: 4px;
  }

  /* 首屏 Hero 移动端呼吸感排版 */
  .snap-section {
    padding: 66px 0 24px;
  }
  .container {
    padding: 0 16px;
  }
  .hero-pill-tag {
    font-size: 0.72rem;
    padding: 4px 10px;
    margin-bottom: 12px;
    gap: 6px;
    line-height: 1.4;
    text-align: left;
  }
  .hero-headline {
    font-size: 1.65rem;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
  }
  .hero-summary {
    font-size: 0.88rem;
    line-height: 1.55;
    margin-bottom: 18px;
  }
  .hero-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 22px;
    width: 100%;
  }
  .btn-hero-main {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    justify-content: center;
    white-space: nowrap;
  }
  .hero-actions-sub {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    width: 100%;
  }
  .btn-hero-sub {
    width: 100%;
    padding: 10px 6px;
    font-size: 0.82rem;
    justify-content: center;
    white-space: nowrap;
  }

  /* 信任指标网格：紧凑 2x2 极富条理 */
  .hero-trust-bar {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px;
    padding: 10px 12px;
  }
  .trust-cell {
    gap: 8px;
    padding: 4px;
  }
  .trust-cell-icon {
    width: 26px;
    height: 26px;
    border-radius: 6px;
  }
  .trust-cell-txt h4 {
    font-size: 0.8rem;
  }
  .trust-cell-txt p {
    font-size: 0.68rem;
  }

  /* 区块头部紧凑 */
  .section-header-compact {
    margin-bottom: 16px;
  }
  .section-title-compact {
    font-size: 1.45rem;
  }
  .section-desc-compact {
    font-size: 0.78rem;
  }

  /* 套餐卡片 */
  .pricing-cards-row {
    gap: 14px;
  }
  .p-card {
    padding: 18px 16px;
    border-radius: 14px;
  }
  .p-title {
    font-size: 1.12rem;
  }
  .p-price-num {
    font-size: 2rem;
  }
  .p-specs-grid {
    gap: 5px;
    margin-bottom: 10px;
  }
  .p-spec-item {
    padding: 5px 4px;
  }
  .p-spec-label {
    font-size: 0.65rem;
  }
  .p-spec-val {
    font-size: 0.82rem;
  }
  .p-token-bar {
    padding: 6px 8px;
    margin-bottom: 10px;
  }
  .p-token-txt {
    font-size: 0.74rem;
  }
  .p-feature-list {
    margin-bottom: 14px;
  }
  .p-feature-item {
    font-size: 0.76rem;
    margin-bottom: 5px;
  }

  /* 按量直充卡片移动端瘦身 */
  .recharge-box {
    padding: 18px 14px;
    gap: 18px;
  }
  .rc-left h3 {
    font-size: 1.25rem;
  }
  .rc-left p.desc {
    font-size: 0.8rem;
    margin-bottom: 12px;
  }
  .rc-point-item {
    font-size: 0.78rem;
    gap: 6px;
  }
  .rc-calc-card {
    padding: 14px;
  }
  .rc-calc-btns {
    gap: 6px;
    margin-bottom: 10px;
  }
  .rc-btn-tier {
    padding: 6px 2px;
    font-size: 0.82rem;
  }
  .rc-usd-amount {
    font-size: 1.25rem;
  }
  .rc-tokens-val {
    font-size: 1.08rem;
  }

  /* 客户端生态与基准 */
  .eco-bench-grid {
    gap: 14px;
  }
  .bench-card {
    padding: 16px 14px;
  }
  .eco-terminal-wrap {
    padding: 12px;
  }
  .eco-terminal-code {
    font-size: 0.72rem;
  }

  /* 常见问题与页脚 */
  .steps-faq-row {
    gap: 16px;
  }
  .footer-compact {
    flex-direction: column;
    gap: 8px;
    text-align: center;
    padding-top: 10px;
  }
  .footer-compact a {
    margin: 0 6px;
  }
}