/* ==========================================================================
   及食 (Kitchen Genius / Frigidus) 官方网站样式表
   Design System: Apple HIG + Duolingo-inspired Warm Modern Aesthetic
   ========================================================================== */

:root {
  /* 品牌核心色彩 */
  --brand-primary: #1CB6FF;
  --brand-primary-hover: #00A2F2;
  --brand-primary-light: #EBF8FF;
  --brand-primary-glow: rgba(28, 182, 255, 0.28);
  
  --brand-orange: #FF7A00;
  --brand-orange-light: #FFF4EC;
  --brand-green: #10B981;
  --brand-green-light: #ECFDF5;
  --brand-amber: #F59E0B;
  --brand-amber-light: #FEF3C7;
  --brand-red: #EF4444;
  --brand-red-light: #FEE2E2;

  /* 文字与排版 */
  --ink-primary: #0F172A;
  --ink-secondary: #475569;
  --ink-tertiary: #94A3B8;
  --ink-muted: #CBD5E1;
  
  /* 背景与表面 */
  --bg-canvas: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-translucent: rgba(255, 255, 255, 0.88);
  --bg-card: #FFFFFF;
  --bg-card-subtle: #F1F5F9;

  /* 边框与投影 */
  --border-subtle: rgba(15, 23, 42, 0.06);
  --border-light: rgba(15, 23, 42, 0.1);
  --border-active: rgba(28, 182, 255, 0.4);

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 10px 15px -3px rgba(15, 23, 42, 0.06), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 20px 40px -10px var(--brand-primary-glow);
  --shadow-phone: 0 25px 60px -15px rgba(15, 23, 42, 0.22), 0 0 0 12px #1E293B;

  /* 圆角与间距 */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 9999px;

  /* 动画 */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.18s ease;
  --transition-normal: 0.28s var(--ease-spring);
  --transition-slow: 0.5s var(--ease-spring);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

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

/* 容器布局 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
  position: relative;
}

/* 顶部通用标题组 */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: var(--brand-primary-light);
  color: var(--brand-primary);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink-primary);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--ink-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   导航栏 (Header & Navbar)
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-surface-translucent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.95);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(28, 182, 255, 0.25);
  transition: transform var(--transition-normal);
}

.brand-logo:hover .brand-icon {
  transform: scale(1.05) rotate(-2deg);
}

.brand-name-group {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink-primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.brand-subtitle {
  font-size: 0.725rem;
  font-weight: 600;
  color: var(--brand-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--brand-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-primary);
  border-radius: var(--radius-pill);
  transition: width var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.925rem;
  font-weight: 600;
  transition: all var(--transition-normal);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(28, 182, 255, 0.35);
}

.btn-primary:hover {
  background: var(--brand-primary-hover);
  box-shadow: 0 6px 20px rgba(28, 182, 255, 0.5);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: #FFFFFF;
  color: var(--ink-primary);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: var(--bg-canvas);
  border-color: var(--ink-secondary);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--ink-secondary);
}

.btn-ghost:hover {
  color: var(--brand-primary);
  background: var(--brand-primary-light);
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 20px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  height: 2.5px;
  width: 100%;
  background-color: var(--ink-primary);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.menu-toggle.open span:nth-child(1) {
  transform: translateY(8.5px) rotate(45deg);
}

.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.open span:nth-child(3) {
  transform: translateY(-8.5px) rotate(-45deg);
}

/* ==========================================================================
   Hero 头部首屏
   ========================================================================== */

.hero-section {
  padding-top: 150px;
  padding-bottom: 90px;
  position: relative;
  overflow: hidden;
}

/* 背景光影效果 (呼应 HomeBlueAuroraBackground) */
.hero-aurora-bg {
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 140%;
  max-width: 1400px;
  height: 800px;
  background: radial-gradient(circle at 50% 30%, rgba(28, 182, 255, 0.16) 0%, rgba(16, 185, 129, 0.08) 35%, rgba(255, 255, 255, 0) 70%);
  filter: blur(50px);
  pointer-events: none;
  z-index: -1;
  animation: aurora-drift 14s ease-in-out infinite alternate;
}

@keyframes aurora-drift {
  0% { transform: translateX(-50%) scale(1) rotate(0deg); }
  100% { transform: translateX(-48%) scale(1.08) rotate(3deg); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.hero-content {
  max-width: 580px;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  border: 1px solid rgba(28, 182, 255, 0.25);
  box-shadow: 0 4px 14px rgba(28, 182, 255, 0.12);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--brand-primary);
  margin-bottom: 24px;
}

.hero-pill-badge .sparkle {
  color: #F59E0B;
}

.hero-title {
  font-size: clamp(2.4rem, 4.2vw, 3.6rem);
  font-weight: 850;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--ink-primary);
  margin-bottom: 20px;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #0090E7 0%, #1CB6FF 50%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.18rem;
  color: var(--ink-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.btn-app-store {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #000000;
  color: #FFFFFF;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
}

.btn-app-store:hover {
  background: #1E293B;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

.btn-app-store svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.btn-app-store-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.btn-app-store-sub {
  font-size: 0.68rem;
  opacity: 0.8;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-app-store-main {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.2;
}

.hero-badges-row {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--ink-secondary);
  border-top: 1px solid var(--border-subtle);
  padding-top: 20px;
}

.badge-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge-item svg {
  color: var(--brand-green);
}

/* ==========================================================================
   Hero 手机模型展示 (CSS iPhone 16 Pro Mockup)
   ========================================================================== */

.hero-mockup-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup {
  width: 320px;
  height: 650px;
  background: #0F172A;
  border-radius: 50px;
  box-shadow: var(--shadow-phone);
  position: relative;
  border: 4px solid #334155;
  overflow: hidden;
  user-select: none;
}

/* 灵动岛 Dynamic Island */
.phone-island {
  position: absolute;
  top: 11px;
  left: 50%;
  transform: translateX(-50%);
  width: 96px;
  height: 26px;
  background: #000000;
  border-radius: 20px;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
}

.phone-camera-lens {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #111827;
  border: 1px solid #1F2937;
}

/* 屏幕内部应用视图 */
.phone-screen {
  width: 100%;
  height: 100%;
  background: #F8FAFC;
  background-image: url('../images/aurora-bg.png');
  background-size: cover;
  background-position: top center;
  padding: 44px 16px 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
  font-size: 12px;
}

.phone-status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 8px;
  font-size: 11px;
  font-weight: 600;
  color: #0F172A;
}

.phone-app-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 4px;
}

.phone-greeting {
  display: flex;
  flex-direction: column;
}

.phone-greeting-title {
  font-size: 16px;
  font-weight: 800;
  color: #0F172A;
}

.phone-greeting-sub {
  font-size: 11px;
  color: #64748B;
}

.phone-top-icons {
  display: flex;
  gap: 8px;
}

.phone-icon-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
  font-size: 12px;
}

/* 手机内临期卡片 */
.phone-expiry-timeline {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.phone-timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  color: #0F172A;
  font-size: 12px;
}

.phone-timeline-badge {
  background: var(--brand-red-light);
  color: var(--brand-red);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 6px;
  font-weight: 700;
}

.phone-food-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 10px;
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.food-emoji {
  font-size: 18px;
}

.food-info {
  flex: 1;
}

.food-name {
  font-weight: 700;
  color: #1E293B;
  font-size: 12px;
}

.food-space {
  font-size: 10px;
  color: #94A3B8;
}

.food-due {
  font-size: 11px;
  font-weight: 700;
}

.due-urgent {
  color: #EF4444;
}

.due-warning {
  color: #F59E0B;
}

/* 手机内空间卡片横滑 */
.phone-spaces-preview {
  display: flex;
  gap: 8px;
  overflow: hidden;
}

.phone-space-chip {
  flex: 1;
  background: rgba(255, 255, 255, 0.88);
  border-radius: 12px;
  padding: 8px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.phone-space-chip img {
  width: 28px;
  height: 28px;
  margin: 0 auto 4px auto;
  object-fit: contain;
}

.phone-space-name {
  font-weight: 700;
  font-size: 10px;
  color: #334155;
}

.phone-space-count {
  font-size: 9px;
  color: #94A3B8;
}

/* 手机内底部浮动双胶囊 Dock */
.phone-bottom-dock {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 4px;
}

.phone-nav-dock {
  flex: 1;
  height: 40px;
  background: #FFFFFF;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  padding: 0 8px;
}

.phone-dock-item {
  font-size: 10px;
  font-weight: 600;
  color: #64748B;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.phone-dock-item.active {
  color: var(--brand-primary);
}

.phone-ask-pill {
  height: 40px;
  padding: 0 12px;
  border-radius: 20px;
  background: linear-gradient(135deg, #1CB6FF 0%, #0090E7 100%);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 4px;
  box-shadow: 0 4px 14px rgba(28, 182, 255, 0.4);
}

/* 悬浮在手机外侧的动态标签 (Floating Cards) */
.float-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 10;
  animation: float-gentle 4s ease-in-out infinite alternate;
}

.float-card-1 {
  top: 15%;
  left: -48px;
  animation-delay: 0s;
}

.float-card-2 {
  bottom: 22%;
  right: -52px;
  animation-delay: 1.5s;
}

.float-card-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.float-card-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ink-primary);
  line-height: 1.2;
}

.float-card-sub {
  font-size: 0.75rem;
  color: var(--ink-secondary);
}

@keyframes float-gentle {
  0% { transform: translateY(0); }
  100% { transform: translateY(-10px); }
}

/* ==========================================================================
   四项核心价值横幅 (Core Stats & Highlights)
   ========================================================================== */

.stats-section {
  padding: 20px 0 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  text-align: left;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-active);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.stat-icon.blue { background: var(--brand-primary-light); color: var(--brand-primary); }
.stat-icon.orange { background: var(--brand-orange-light); color: var(--brand-orange); }
.stat-icon.green { background: var(--brand-green-light); color: var(--brand-green); }
.stat-icon.purple { background: #F3E8FF; color: #9333EA; }

.stat-title {
  font-size: 1.2rem;
  font-weight: 750;
  color: var(--ink-primary);
  margin-bottom: 6px;
}

.stat-desc {
  font-size: 0.9rem;
  color: var(--ink-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   核心功能板块 (Features Detailed Grid)
   ========================================================================== */

.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
  margin-bottom: 120px;
}

.feature-block:last-child {
  margin-bottom: 0;
}

.feature-block.reversed {
  direction: rtl;
}

.feature-block.reversed > * {
  direction: ltr;
}

.feature-content {
  max-width: 520px;
}

.feature-kicker {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.feature-heading {
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  font-weight: 800;
  color: var(--ink-primary);
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.feature-paragraph {
  font-size: 1.05rem;
  color: var(--ink-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

.feature-points {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.feature-point-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.point-check-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--brand-green-light);
  color: var(--brand-green);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.point-text {
  font-size: 0.95rem;
  color: var(--ink-primary);
  line-height: 1.5;
}

.point-text strong {
  color: var(--ink-primary);
  font-weight: 700;
}

/* 功能可视化卡片容器 */
.feature-visual {
  position: relative;
  background: linear-gradient(145deg, #FFFFFF 0%, #F1F5F9 100%);
  border-radius: var(--radius-xl);
  padding: 40px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}

.visual-artwork {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 400px;
  transition: transform var(--transition-slow);
}

.feature-visual:hover .visual-artwork {
  transform: scale(1.03) translateY(-4px);
}

/* 视觉插图与拟物展示组件 */
.interactive-receipt-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.receipt-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed #CBD5E1;
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.receipt-store {
  font-weight: 800;
  font-size: 1.05rem;
  color: #0F172A;
}

.receipt-tag {
  background: #EFF6FF;
  color: #2563EB;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
}

.receipt-items-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.receipt-item-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  color: #334155;
}

.receipt-item-row .auto-date {
  color: var(--brand-green);
  font-size: 0.75rem;
  background: var(--brand-green-light);
  padding: 1px 6px;
  border-radius: 4px;
}

/* 空间卡片网格 */
.spaces-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  width: 100%;
}

.space-card-interactive {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: all var(--transition-normal);
}

.space-card-interactive:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-primary);
}

.space-card-interactive img {
  width: 60px;
  height: 60px;
  margin: 0 auto 12px auto;
  object-fit: contain;
}

.space-title-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink-primary);
}

.space-count-text {
  font-size: 0.8rem;
  color: var(--ink-tertiary);
}

/* 口味画像流式胶囊展示 */
.taste-profile-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}

.taste-chip {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-canvas);
  transition: all var(--transition-fast);
}

.taste-chip.active {
  background: var(--brand-primary-light);
  color: var(--brand-primary);
  border-color: rgba(28, 182, 255, 0.4);
}

.taste-chip.spicy {
  background: var(--brand-red-light);
  color: var(--brand-red);
  border-color: rgba(239, 68, 68, 0.3);
}

.taste-chip.green {
  background: var(--brand-green-light);
  color: var(--brand-green);
  border-color: rgba(16, 185, 129, 0.3);
}

/* ==========================================================================
   硬件生态展望 (Smart Hardware Section)
   ========================================================================== */

.hardware-banner {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  border-radius: var(--radius-xl);
  padding: 64px 48px;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hardware-banner::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(28, 182, 255, 0.25) 0%, rgba(28, 182, 255, 0) 70%);
  filter: blur(60px);
  pointer-events: none;
}

.hardware-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 2;
}

.hardware-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  color: #38BDF8;
  margin-bottom: 20px;
}

.hardware-title {
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
}

.hardware-desc {
  font-size: 1.05rem;
  color: #94A3B8;
  line-height: 1.7;
  margin-bottom: 32px;
}

.hardware-features-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.hw-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: #E2E8F0;
}

.hw-item svg {
  color: #38BDF8;
  flex-shrink: 0;
}

/* 拟物墨水屏冰箱贴展示 */
.eink-device-frame {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  background: #F1F5F9;
  border-radius: 28px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), inset 0 2px 4px rgba(255, 255, 255, 0.8);
  border: 1px solid #CBD5E1;
  position: relative;
}

.eink-screen {
  background: #EAE6DF;
  border: 4px solid #1E293B;
  border-radius: 12px;
  padding: 20px 16px;
  box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.2);
  font-family: "Courier New", Courier, monospace, "PingFang SC";
  color: #1E293B;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.eink-screen-header {
  display: flex;
  justify-content: space-between;
  border-bottom: 2px dashed #1E293B;
  padding-bottom: 8px;
  font-size: 12px;
  font-weight: bold;
}

.eink-screen-body {
  margin: 16px 0;
  font-size: 16px;
  font-weight: bold;
  line-height: 1.4;
}

.eink-screen-footer {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  font-weight: bold;
}

.device-mic-button {
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #FFFFFF;
  border-radius: var(--radius-pill);
  padding: 10px;
  font-size: 13px;
  font-weight: 700;
  color: #0F172A;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.mic-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #EF4444;
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

/* ==========================================================================
   常见问题手风琴 (FAQ Accordion)
   ========================================================================== */

.faq-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-item.active {
  border-color: var(--border-active);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 28px;
  text-align: left;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ink-primary);
  background: transparent;
  cursor: pointer;
}

.faq-toggle-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-canvas);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-normal), background var(--transition-fast);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
  background: var(--brand-primary-light);
  color: var(--brand-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 28px;
  color: var(--ink-secondary);
  font-size: 0.98rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  padding-bottom: 24px;
}

/* ==========================================================================
   下载与行动召唤 (CTA Banner)
   ========================================================================== */

.cta-section {
  padding: 80px 0 100px 0;
}

.cta-box {
  background: linear-gradient(135deg, #0284C7 0%, #1CB6FF 50%, #0284C7 100%);
  border-radius: var(--radius-xl);
  padding: 72px 48px;
  text-align: center;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-glow);
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0) 70%);
  filter: blur(40px);
}

.cta-title {
  font-size: clamp(2.2rem, 3.8vw, 3rem);
  font-weight: 850;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-sub {
  font-size: 1.15rem;
  opacity: 0.92;
  max-width: 600px;
  margin: 0 auto 36px auto;
  line-height: 1.6;
}

.cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.btn-cta-white {
  background: #FFFFFF;
  color: #0284C7;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  transition: all var(--transition-normal);
}

.btn-cta-white:hover {
  background: #F8FAFC;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   页脚 (Footer)
   ========================================================================== */

.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 32px 0;
  font-size: 0.925rem;
  color: var(--ink-secondary);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .brand-logo {
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--ink-tertiary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  color: var(--ink-secondary);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--brand-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 28px;
  font-size: 0.85rem;
  color: var(--ink-tertiary);
}

.footer-legal-links {
  display: flex;
  gap: 20px;
}

.footer-legal-links a:hover {
  color: var(--brand-primary);
}

/* ==========================================================================
   下载弹窗 / 二维码浮层 (QR Code Modal)
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: 20px;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-normal);
  position: relative;
}

.modal-backdrop.open .modal-dialog {
  transform: scale(1) translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-canvas);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--ink-tertiary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--border-light);
  color: var(--ink-primary);
}

.modal-qr-box {
  width: 180px;
  height: 180px;
  margin: 20px auto;
  padding: 12px;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-qr-box svg {
  width: 100%;
  height: 100%;
}

/* ==========================================================================
   响应式媒体查询 (Responsive Breakpoints)
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 60px;
  }

  .hero-content {
    max-width: 100%;
    margin: 0 auto;
  }

  .hero-actions, .hero-badges-row {
    justify-content: center;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-block, .feature-block.reversed {
    grid-template-columns: 1fr;
    direction: ltr;
    gap: 40px;
  }

  .feature-content {
    max-width: 100%;
  }

  .hardware-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hardware-features-list {
    justify-content: center;
    max-width: 480px;
    margin: 0 auto;
  }

  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .site-header {
    height: 64px;
  }

  .nav-wrapper {
    height: 64px;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #FFFFFF;
    flex-direction: column;
    padding: 32px 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    transition: transform var(--transition-normal);
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .nav-actions .btn-primary {
    display: none;
  }

  .hero-section {
    padding-top: 110px;
    padding-bottom: 40px;
  }

  .phone-mockup {
    width: 290px;
    height: 590px;
  }

  .float-card-1 {
    left: -10px;
    top: 10%;
  }

  .float-card-2 {
    right: -10px;
    bottom: 15%;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .hardware-banner {
    padding: 40px 24px;
  }

  .hardware-features-list {
    grid-template-columns: 1fr;
  }

  .cta-box {
    padding: 48px 24px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
}