/* ==========================================================================
   HI甜 (hitian.net) - 官方网站样式表
   包含：设计系统变量、全局重置、各业务组件、深度响应式（平板 & 手机 H5）
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计系统与 CSS 变量
   -------------------------------------------------------------------------- */
:root {
  /* 品牌薄荷绿 */
  --mint-50: #f0fdfa;
  --mint-100: #ccfbf1;
  --mint-200: #99f6e4;
  --mint-300: #5eead4;
  --mint-400: #2dd4bf;
  --mint-500: #14b8a6;
  --mint-600: #0d9488;
  --mint-700: #0f766e;
  
  /* 活力珊瑚粉 */
  --pink-50: #fdf2f8;
  --pink-100: #fce7f3;
  --pink-200: #fbcfe8;
  --pink-300: #f9a8d4;
  --pink-400: #f472b6;
  --pink-500: #ec4899;
  --pink-600: #db2777;

  /* 高级中性灰 */
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  /* 基础圆角系统 */
  --radius-xs: 6px;
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  /* 阴影层次 */
  --shadow-subtle: 0 2px 10px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 10px 30px -6px rgba(15, 23, 42, 0.07);
  --shadow-hover: 0 20px 40px -12px rgba(20, 184, 166, 0.22);
  --shadow-float: 0 24px 60px -16px rgba(15, 23, 42, 0.16);

  /* 导航栏高度 */
  --nav-height: 76px;
  --nav-height-mobile: 66px;
}

/* --------------------------------------------------------------------------
   2. 全局重置与基础规范
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-padding-top: var(--nav-height);
}

body {
  margin: 0;
  font-family: 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--slate-800);
  background: #ffffff;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

body.menu-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

button {
  font-family: inherit;
}

.container {
  width: min(1220px, 92vw);
  margin-inline: auto;
}

/* --------------------------------------------------------------------------
   3. 核心按钮组件 (Buttons)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 15px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: none;
  white-space: nowrap;
  user-select: none;
  min-height: 46px;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(135deg, var(--mint-400), var(--mint-600));
  color: #fff;
  box-shadow: 0 10px 24px -6px rgba(13, 148, 136, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -8px rgba(13, 148, 136, 0.55);
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: var(--slate-800);
  border: 1.5px solid var(--slate-200);
  box-shadow: var(--shadow-subtle);
}

.btn-secondary:hover {
  border-color: var(--mint-400);
  color: var(--mint-700);
  background: var(--mint-50);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   4. 顶部吸顶导航 (Navigation)
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  transition: all 0.3s ease;
}

.nav.scrolled {
  height: 68px;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 22px;
  color: var(--slate-900);
  letter-spacing: -0.02em;
}

.logoImg {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(20, 184, 166, 0.2);
}

.official-tag {
  font-size: 11.5px;
  padding: 3px 9px;
  background: var(--mint-100);
  color: var(--mint-700);
  font-weight: 700;
  border-radius: var(--radius-pill);
  border: 1px solid var(--mint-200);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--slate-600);
}

.nav-links a {
  position: relative;
  padding: 6px 2px;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--mint-600);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--mint-400), var(--pink-400));
  transition: all 0.25s ease;
  transform: translateX(-50%);
  border-radius: 2px;
}

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

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

.nav-qr-trigger {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--slate-700);
  background: var(--slate-100);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-qr-trigger:hover {
  background: var(--mint-100);
  color: var(--mint-700);
}

.nav-qr-popover {
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  background: #fff;
  padding: 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-float);
  border: 1px solid var(--slate-100);
  width: 200px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.25s ease;
  pointer-events: none;
  z-index: 1010;
}

.nav-qr-trigger:hover .nav-qr-popover,
.nav-qr-popover:hover {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-qr-popover img {
  width: 168px;
  height: 168px;
  margin: 0 auto 8px;
  border-radius: 8px;
}

.nav-qr-popover p {
  font-size: 12px;
  color: var(--slate-500);
  margin: 0;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--slate-200);
  background: transparent;
  cursor: pointer;
  padding: 10px;
  position: relative;
  z-index: 1002;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2.5px;
  background: var(--slate-800);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-toggle span + span {
  margin-top: 5.5px;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   5. 移动端抽屉菜单 (Mobile Drawer)
   -------------------------------------------------------------------------- */
.mobile-menu-drawer {
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-menu-drawer.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-content {
  background: #fff;
  padding: 24px;
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
  transform: translateY(-20px);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: calc(100vh - var(--nav-height) - 30px);
  overflow-y: auto;
}

.mobile-menu-drawer.active .mobile-menu-content {
  transform: translateY(0);
}

.mobile-menu-link {
  font-size: 16px;
  font-weight: 700;
  color: var(--slate-800);
  padding: 12px 6px;
  border-bottom: 1px solid var(--slate-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-menu-link:hover,
.mobile-menu-link:active {
  color: var(--mint-600);
}

/* --------------------------------------------------------------------------
   6. Hero 首屏区域
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100dvh;
  padding-top: calc(var(--nav-height) + 40px);
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  background:
    radial-gradient(circle at 85% 15%, rgba(94, 234, 212, 0.25), transparent 42%),
    radial-gradient(circle at 15% 75%, rgba(249, 168, 212, 0.18), transparent 38%),
    linear-gradient(180deg, #ffffff 0%, var(--mint-50) 60%, #ffffff 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--mint-200);
  color: var(--mint-700);
  font-size: 13.5px;
  font-weight: 700;
  margin-bottom: 22px;
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(6px);
}

.hero-eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint-500);
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.25);
  animation: pulse 2s infinite;
}

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

.hero-title {
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 900;
  line-height: 1.12;
  color: var(--slate-900);
  letter-spacing: -0.03em;
  margin: 0 0 20px;
}

.hero-title .accent {
  background: linear-gradient(135deg, var(--mint-600) 0%, var(--pink-500) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  font-size: 17.5px;
  color: var(--slate-600);
  line-height: 1.75;
  margin: 0 0 36px;
  max-width: 520px;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(226, 232, 240, 0.8);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-size: 28px;
  font-weight: 900;
  color: var(--slate-900);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 12.5px;
  color: var(--slate-500);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   7. 拟真手机与悬浮卡片 (Visual & Phone Frame)
   -------------------------------------------------------------------------- */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-frame {
  position: relative;
  width: min(310px, 78vw);
  aspect-ratio: 9 / 19.5;
  border-radius: 46px;
  background: #0f172a;
  padding: 10px;
  box-shadow:
    0 25px 60px -15px rgba(15, 23, 42, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
  transform: rotate(-3deg);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.phone-frame:hover {
  transform: rotate(0deg) translateY(-8px);
}

.phone-notch {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 88px;
  height: 20px;
  background: #0f172a;
  border-radius: 20px;
  z-index: 10;
}

.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 38px;
  overflow: hidden;
  background: #fff;
  position: relative;
}

.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.floating-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: var(--shadow-float);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 20;
  animation: float 6s ease-in-out infinite;
}

.floating-card.pink {
  right: -25px;
  top: 22%;
  animation-delay: 0s;
}

.floating-card.mint {
  left: -35px;
  bottom: 22%;
  animation-delay: 3s;
}

.floating-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.floating-text {
  font-size: 13.5px;
  font-weight: 800;
  color: var(--slate-900);
}

.floating-sub {
  font-size: 11.5px;
  color: var(--slate-500);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.floating-card .floating-avatar,
.floating-card .floating-info {
  transition: opacity 0.35s ease, transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-card.is-updating .floating-avatar,
.floating-card.is-updating .floating-info {
  opacity: 0;
  transform: translateY(-8px) scale(0.96);
}

.badge-action {
  color: var(--pink-600);
  font-weight: 800;
  margin-left: 2px;
}

.floating-time {
  margin-left: 6px;
  color: var(--slate-400);
  font-size: 11px;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

/* --------------------------------------------------------------------------
   8. 通用 Section 标题与徽章规范
   -------------------------------------------------------------------------- */
.section {
  padding: 110px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section-badge {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--mint-600);
  background: var(--mint-100);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.section-badge.pink {
  color: var(--pink-600);
  background: var(--pink-100);
}

.section-title {
  font-size: clamp(30px, 3.8vw, 42px);
  font-weight: 900;
  color: var(--slate-900);
  line-height: 1.2;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 17px;
  color: var(--slate-600);
  line-height: 1.7;
  margin: 0;
}

/* --------------------------------------------------------------------------
   9. 服务场景矩阵 (Scenarios)
   -------------------------------------------------------------------------- */
.scenarios {
  background: #ffffff;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  background: var(--slate-50);
  border: 1px solid var(--slate-100);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.scenario-card:hover {
  transform: translateY(-6px);
  background: #fff;
  border-color: var(--mint-200);
  box-shadow: var(--shadow-hover);
}

.scenario-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
}

.scenario-icon svg,
.bento-icon svg,
.step-icon svg,
.trust-icon svg {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.scenario-card:hover .scenario-icon svg,
.bento-cell:hover .bento-icon svg,
.step:hover .step-icon svg,
.trust-card:hover .trust-icon svg {
  transform: scale(1.15);
}

.scenario-icon.mint { background: var(--mint-100); color: var(--mint-600); }
.scenario-icon.pink { background: var(--pink-100); color: var(--pink-600); }
.scenario-icon.blue { background: #e0f2fe; color: #0284c7; }
.scenario-icon.amber { background: #fef3c7; color: #d97706; }
.scenario-icon.purple { background: #f3e8ff; color: #9333ea; }
.scenario-icon.emerald { background: #d1fae5; color: #059669; }

.scenario-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--slate-900);
  margin: 0 0 10px;
}

.scenario-text {
  font-size: 14.5px;
  color: var(--slate-600);
  line-height: 1.65;
  margin: 0 0 16px;
}

.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.scenario-tag {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--slate-600);
  background: #fff;
  border: 1px solid var(--slate-200);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

/* --------------------------------------------------------------------------
   10. Bento 特色功能 (Features Bento)
   -------------------------------------------------------------------------- */
.features {
  background: linear-gradient(180deg, #ffffff 0%, var(--mint-50) 100%);
}

.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bento-cell {
  border-radius: var(--radius-lg);
  padding: 36px;
  background: #fff;
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-subtle);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bento-cell:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
  border-color: var(--mint-300);
}

.bento-cell.wide {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
  background: linear-gradient(135deg, #ffffff 0%, var(--mint-50) 100%);
}

.bento-cell.tall {
  grid-row: span 2;
  background: linear-gradient(180deg, #ffffff 0%, var(--pink-50) 100%);
}

.bento-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.bento-icon.mint { background: var(--mint-100); color: var(--mint-600); }
.bento-icon.pink { background: var(--pink-100); color: var(--pink-600); }
.bento-icon.violet { background: #ede9fe; color: #7c3aed; }

.bento-title {
  font-size: 21px;
  font-weight: 800;
  color: var(--slate-900);
  margin: 0 0 10px;
}

.bento-text {
  font-size: 15px;
  color: var(--slate-600);
  line-height: 1.7;
  margin: 0;
}

.bento-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: #fff;
}

.bento-img img {
  width: 100%;
  height: auto;
  transition: transform 0.5s ease;
}

.bento-cell:hover .bento-img img {
  transform: scale(1.03);
}

/* --------------------------------------------------------------------------
   11. 使用流程 (How It Works)
   -------------------------------------------------------------------------- */
.how {
  background: #ffffff;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  counter-reset: step;
}

.step {
  position: relative;
  background: var(--slate-50);
  border-radius: var(--radius-lg);
  padding: 40px 32px 32px;
  border: 1px solid var(--slate-100);
  box-shadow: var(--shadow-subtle);
  transition: all 0.3s ease;
}

.step:hover {
  background: #fff;
  transform: translateY(-5px);
  border-color: var(--mint-200);
  box-shadow: var(--shadow-card);
}

.step::before {
  counter-increment: step;
  content: '0' counter(step);
  position: absolute;
  top: 24px;
  right: 28px;
  font-size: 16px;
  font-weight: 900;
  color: var(--mint-400);
  font-family: monospace;
}

.step-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--mint-100);
  color: var(--mint-600);
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  box-shadow: 0 4px 14px rgba(20, 184, 166, 0.12);
}

.step-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--slate-900);
  margin: 0 0 12px;
}

.step-text {
  font-size: 15px;
  color: var(--slate-600);
  line-height: 1.7;
  margin: 0;
}

/* --------------------------------------------------------------------------
   12. 界面展示 (Showcase)
   -------------------------------------------------------------------------- */
.showcases {
  background: var(--slate-50);
}

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

.showcase-card {
  border-radius: var(--radius-lg);
  background: #ffffff;
  border: 1px solid var(--slate-200);
  overflow: hidden;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.showcase-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-float);
  border-color: var(--mint-300);
}

.showcase-img {
  height: 380px;
  padding: 24px 20px 0;
  background: linear-gradient(180deg, var(--mint-50) 0%, rgba(255, 255, 255, 0.9) 100%);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow: hidden;
  position: relative;
}

.showcase-mockup {
  width: 100%;
  max-width: 220px;
  height: 100%;
  border-radius: 22px 22px 0 0;
  border: 3px solid #1e293b;
  border-bottom: none;
  overflow: hidden;
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.12);
  background: #ffffff;
  position: relative;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.showcase-mockup::before {
  content: '';
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 44px;
  height: 4px;
  background: rgba(30, 41, 59, 0.35);
  border-radius: 999px;
  z-index: 2;
}

.showcase-mockup img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.showcase-card:hover .showcase-mockup {
  transform: translateY(-6px);
}

.showcase-body {
  padding: 22px 20px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #ffffff;
}

.showcase-title {
  font-size: 17px;
  font-weight: 800;
  color: var(--slate-900);
  margin: 0 0 6px;
}

.showcase-desc {
  font-size: 13.5px;
  color: var(--slate-500);
  margin: 0;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   13. 安全保障 (Trust & Safety)
   -------------------------------------------------------------------------- */
.trust {
  background: #ffffff;
}

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

.trust-card {
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  background: var(--mint-50);
  border: 1px solid var(--mint-100);
  text-align: center;
  transition: all 0.3s ease;
}

.trust-card:hover {
  background: #fff;
  border-color: var(--mint-300);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.trust-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #fff;
  display: grid;
  place-items: center;
  margin: 0 auto 18px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
}

.trust-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--slate-900);
  margin: 0 0 8px;
}

.trust-text {
  font-size: 14px;
  color: var(--slate-600);
  line-height: 1.6;
  margin: 0;
}

/* --------------------------------------------------------------------------
   14. 真实评价轮播 (Testimonials Slider)
   -------------------------------------------------------------------------- */
.testimonials {
  background: linear-gradient(180deg, #ffffff 0%, var(--slate-50) 100%);
  overflow: hidden;
}

.reviews-slider-wrapper {
  position: relative;
  max-width: 100%;
}

.reviews-slider {
  overflow: hidden;
  padding: 12px 4px;
}

.reviews-track {
  display: flex;
  gap: 24px;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.review-card {
  flex: 0 0 calc((100% - 48px) / 3);
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-subtle);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 230px;
  user-select: none;
}

.review-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
  border-color: var(--mint-300);
}

.review-stars {
  color: #f59e0b;
  font-size: 16px;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 15px;
  color: var(--slate-700);
  line-height: 1.7;
  margin: 0 0 20px;
}

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

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--mint-100);
  color: var(--mint-700);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 15px;
  border: 2px solid #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.review-name {
  font-size: 14.5px;
  font-weight: 800;
  color: var(--slate-900);
}

.review-city {
  font-size: 12px;
  color: var(--slate-400);
}

/* 轮播控制栏 */
.reviews-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 36px;
}

.slider-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  border: 1.5px solid var(--slate-200);
  color: var(--slate-700);
  font-size: 24px;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: var(--shadow-subtle);
  transition: all 0.25s ease;
  user-select: none;
  line-height: 1;
  padding: 0;
}

.slider-btn:hover {
  background: var(--mint-500);
  color: #fff;
  border-color: var(--mint-500);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -4px rgba(20, 184, 166, 0.4);
}

.slider-btn:active {
  transform: scale(0.95);
}

.slider-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-pill);
  background: var(--slate-300);
  cursor: pointer;
  transition: all 0.3s ease;
}

.slider-dot.active {
  width: 28px;
  background: linear-gradient(90deg, var(--mint-500), var(--mint-600));
}

/* --------------------------------------------------------------------------
   15. 常见问答 (FAQ Accordion)
   -------------------------------------------------------------------------- */
.faq {
  background: #ffffff;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.25s ease;
}

.faq-item.active {
  background: #fff;
  border-color: var(--mint-400);
  box-shadow: var(--shadow-card);
}

.faq-question {
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  user-select: none;
}

.faq-question h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--slate-900);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--slate-200);
  display: grid;
  place-items: center;
  font-size: 14px;
  color: var(--slate-600);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--mint-500);
  color: #fff;
  border-color: var(--mint-500);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--slate-600);
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   16. 下载转化区 (Download CTA)
   -------------------------------------------------------------------------- */
.cta {
  padding: 110px 0;
  background:
    radial-gradient(circle at 18% 25%, rgba(94, 234, 212, 0.22), transparent 40%),
    radial-gradient(circle at 82% 75%, rgba(249, 168, 212, 0.18), transparent 40%),
    var(--slate-900);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-content {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.cta-title {
  font-size: clamp(32px, 4.5vw, 50px);
  font-weight: 900;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.cta-desc {
  font-size: 17.5px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.75;
}

.cta-download-box {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 32px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 32px;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  margin-bottom: 0;
  flex-wrap: wrap;
}

.cta-qr {
  background: #fff;
  padding: 12px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.cta-qr img {
  width: 140px;
  height: 140px;
  border-radius: 6px;
}

.cta-qr-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--slate-800);
  margin-top: 6px;
}

.cta-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  align-items: center;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #ffffff;
  color: var(--slate-900);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 14.5px;
  transition: all 0.25s ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  min-width: 190px;
  position: relative;
}

.store-btn:hover {
  transform: translateY(-2px);
  background: var(--mint-50);
  color: var(--mint-700);
}

.store-btn.is-disabled {
  background: rgba(255, 255, 255, 0.85);
  color: var(--slate-600);
  cursor: not-allowed;
  opacity: 0.78;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.store-btn.is-disabled:hover {
  transform: none;
  background: rgba(255, 255, 255, 0.85);
  color: var(--slate-600);
}

.store-btn-badge {
  position: absolute;
  top: -8px;
  right: 12px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.35);
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.store-btn-icon {
  font-size: 24px;
}

.store-btn-text {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.2;
}

.store-btn-text small {
  font-size: 11px;
  color: var(--slate-500);
  font-weight: 500;
}

/* 页脚未启用平台样式 */
.footer-links a.is-disabled {
  color: var(--slate-400);
  cursor: not-allowed;
  opacity: 0.75;
}

.footer-links a.is-disabled:hover {
  color: var(--slate-500);
  transform: none;
}

.footer-link-tag {
  font-size: 11.5px;
  color: var(--slate-400);
  margin-left: 2px;
}

/* 移动端页脚未开放按钮适配 */
.footer-col-download .footer-links a.is-disabled {
  background: var(--slate-100);
  border-color: var(--slate-200);
  color: var(--slate-400);
}

.footer-col-download .footer-links a.is-disabled:hover,
.footer-col-download .footer-links a.is-disabled:active {
  background: var(--slate-100);
  border-color: var(--slate-200);
  color: var(--slate-400);
  transform: none;
}

/* 全局毛玻璃 Toast 提示 */
.hitian-toast {
  position: fixed;
  bottom: 42px;
  left: 50%;
  transform: translateX(-50%) translateY(24px);
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 16px 40px -8px rgba(0, 0, 0, 0.35);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 9999;
  max-width: 90vw;
  text-align: center;
}

.hitian-toast.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.hitian-toast .toast-icon {
  color: var(--mint-400);
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

/* 小程序 & 公众号 PC 端悬浮二维码 Popover */
.store-btn.has-popover {
  position: relative;
}

.store-qr-popover {
  position: absolute;
  bottom: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #ffffff;
  padding: 16px;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px -10px rgba(15, 23, 42, 0.35), 0 0 0 1px rgba(0, 0, 0, 0.06);
  width: 190px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  z-index: 100;
}

.store-qr-popover::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 7px;
  border-style: solid;
  border-color: #ffffff transparent transparent transparent;
}

.store-btn.is-disabled .store-qr-popover {
  display: none !important;
  pointer-events: none !important;
}

@media (min-width: 769px) {
  .store-btn.has-popover:not(.is-disabled):hover .store-qr-popover {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
  }
}

.store-qr-popover img {
  width: 156px;
  height: 156px;
  margin: 0 auto 8px;
  border-radius: 8px;
  object-fit: contain;
  display: block;
}

.store-qr-popover p {
  font-size: 12px;
  font-weight: 700;
  color: var(--slate-700);
  margin: 0;
  line-height: 1.4;
}

/* 移动端 H5 小程序扫码/拉起弹窗 Modal */
.qr-modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.qr-modal.active {
  opacity: 1;
  visibility: visible;
}

.qr-modal-content {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  max-width: 340px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-float);
  transform: scale(0.92);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.qr-modal.active .qr-modal-content {
  transform: scale(1);
}

.qr-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--slate-100);
  border: none;
  font-size: 18px;
  color: var(--slate-600);
  cursor: pointer;
  display: grid;
  place-items: center;
}

.qr-modal img {
  width: 200px;
  height: 200px;
  margin: 16px auto;
  border-radius: 12px;
}

.qr-modal h3 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 800;
  color: var(--slate-900);
}

.qr-modal p {
  margin: 0;
  font-size: 13.5px;
  color: var(--slate-600);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   17. 页脚 Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: 70px 0 36px;
  background: #fff;
  border-top: 1px solid var(--slate-200);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand .logo {
  margin-bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--slate-600);
  line-height: 1.75;
  margin: 0 0 20px;
  max-width: 320px;
}

.footer-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--slate-900);
  margin: 0 0 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
  color: var(--slate-600);
}

.footer-links a {
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-links a:hover {
  color: var(--mint-600);
  transform: translateX(2px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid var(--slate-100);
  font-size: 13.5px;
  color: var(--slate-500);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom a {
  transition: color 0.2s ease;
}

.footer-bottom a:hover {
  color: var(--mint-600);
}

/* --------------------------------------------------------------------------
   18. 返回顶部悬浮按钮 (Back To Top)
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-card);
  display: grid;
  place-items: center;
  color: var(--slate-700);
  font-size: 20px;
  font-weight: 900;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: all 0.3s ease;
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--mint-500);
  color: #fff;
  border-color: var(--mint-500);
  transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   19. 视差滚动显示 (Reveal Animations)
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.2s; }
.reveal.delay-3 { transition-delay: 0.3s; }

/* ==========================================================================
   20. 深度响应式兼容：平板端适配 (768px <= width <= 1024px)
   ========================================================================== */
@media (min-width: 769px) and (max-width: 1024px) {
  .container {
    width: 90vw;
  }

  .nav-links {
    gap: 16px;
    font-size: 13.5px;
  }

  .hero {
    padding-top: calc(var(--nav-height) + 20px);
    padding-bottom: 60px;
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-content {
    max-width: 680px;
    margin: 0 auto;
  }

  .hero-desc {
    margin-inline: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    grid-template-columns: repeat(4, 1fr);
    justify-content: center;
    gap: 16px;
    margin-top: 36px;
  }

  .hero-visual {
    order: -1;
    margin: 0 auto;
  }

  .phone-frame {
    transform: rotate(0deg);
    width: 290px;
  }

  .floating-card.pink {
    right: -10px;
    top: 20%;
  }

  .floating-card.mint {
    left: -10px;
    bottom: 20%;
  }

  /* 场景网格：平板端 2 列 */
  .scenarios-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* Bento 特色：平板端适配 */
  .bento {
    grid-template-columns: repeat(2, 1fr);
  }

  .bento-cell.wide {
    grid-column: span 2;
  }

  .bento-cell.tall {
    grid-row: span 1;
  }

  /* 使用流程：平板端 3 列紧凑 */
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .step {
    padding: 30px 20px 24px;
  }

  /* 界面预览：平板端 2x2 网格 */
  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .showcase-img {
    height: 320px;
    padding: 20px 16px 0;
  }

  .showcase-mockup {
    max-width: 190px;
    border-radius: 18px 18px 0 0;
  }

  /* 安全保障：平板端 2x2 网格 */
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* 真实评价轮播：平板端每屏 2 张卡片 */
  .review-card {
    flex: 0 0 calc((100% - 20px) / 2);
  }
  .reviews-track {
    gap: 20px;
  }

  /* 页脚：平板端 2x2 网格 */
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

/* ==========================================================================
   21. 深度响应式兼容：手机 H5 适配 (width <= 768px)
   ========================================================================== */
@media (max-width: 768px) {
  :root {
    --nav-height: 66px;
  }

  html {
    scroll-padding-top: var(--nav-height);
  }

  .container {
    width: 92vw;
  }

  /* 导航栏 */
  .nav {
    height: var(--nav-height);
  }

  .nav-links,
  .nav-qr-trigger {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-actions {
    gap: 8px;
  }

  .nav-cta {
    padding: 9px 16px;
    font-size: 13.5px;
    min-height: 38px;
  }

  /* Hero 首屏 */
  .hero {
    padding-top: calc(var(--nav-height) + 16px);
    padding-bottom: 50px;
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    text-align: center;
  }

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

  .hero-eyebrow {
    font-size: 12px;
    padding: 6px 12px;
    margin-bottom: 16px;
  }

  .hero-title {
    font-size: clamp(30px, 8vw, 40px);
    margin-bottom: 16px;
    line-height: 1.18;
  }

  .hero-desc {
    font-size: 15px;
    line-height: 1.7;
    margin: 0 auto 28px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 32px;
    padding-top: 24px;
  }

  .stat-num {
    font-size: 24px;
  }

  .stat-label {
    font-size: 12px;
  }

  .hero-visual {
    order: -1;
    margin: 0 auto;
  }

  .phone-frame {
    transform: rotate(0deg);
    width: min(270px, 75vw);
    border-radius: 38px;
    padding: 8px;
  }

  .phone-screen {
    border-radius: 32px;
  }

  .floating-card {
    padding: 10px 14px;
  }

  .floating-card.pink {
    right: -10px;
    top: 15%;
  }

  .floating-card.mint {
    left: -10px;
    bottom: 15%;
  }

  .floating-avatar {
    width: 36px;
    height: 36px;
  }

  .floating-text {
    font-size: 12px;
  }

  .floating-sub {
    font-size: 10.5px;
  }

  /* 通用 Section 调整 */
  .section {
    padding: 64px 0;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .section-title {
    font-size: clamp(24px, 6.5vw, 32px);
    margin-bottom: 12px;
  }

  .section-desc {
    font-size: 14.5px;
    line-height: 1.65;
  }

  /* 场景网格：H5 单列 */
  .scenarios-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .scenario-card {
    padding: 24px 20px;
  }

  /* Bento 卡片：H5 单列 */
  .bento {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .bento-cell {
    padding: 24px 20px;
  }

  .bento-cell.wide {
    grid-column: span 1;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .bento-cell.tall {
    grid-row: span 1;
  }

  /* 使用流程：H5 单列 */
  .steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .step {
    padding: 28px 20px 20px;
  }

  /* 界面预览：H5 双列精细适配 */
  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .showcase-card {
    border-radius: 14px;
  }

  .showcase-img {
    height: 220px;
    padding: 14px 10px 0;
    background: linear-gradient(180deg, var(--mint-50) 0%, rgba(255, 255, 255, 0.95) 100%);
  }

  .showcase-mockup {
    max-width: 140px;
    border-width: 2px;
    border-radius: 14px 14px 0 0;
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
  }

  .showcase-mockup::before {
    width: 28px;
    height: 3px;
    top: 4px;
  }

  .showcase-body {
    padding: 12px 10px 14px;
    text-align: center;
  }

  .showcase-title {
    font-size: 13.5px;
    font-weight: 700;
    margin: 0 0 4px;
  }

  .showcase-desc {
    font-size: 11.5px;
    line-height: 1.45;
  }

  /* 安全保障：H5 单列 */
  .trust-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .trust-card {
    padding: 24px 20px;
  }

  /* 真实评价轮播：H5 单列满宽 */
  .review-card {
    flex: 0 0 100%;
    padding: 24px 20px;
    min-height: auto;
  }
  .reviews-track {
    gap: 16px;
  }
  .reviews-controls {
    margin-top: 24px;
  }

  /* FAQ：H5 */
  .faq-question {
    padding: 18px 18px;
  }

  .faq-question h3 {
    font-size: 15.5px;
  }

  .faq-answer-inner {
    padding: 0 18px 18px;
    font-size: 14px;
  }

  /* 下载 CTA：H5 */
  .cta {
    padding: 70px 0;
  }

  .cta-title {
    font-size: clamp(26px, 7vw, 36px);
  }

  .cta-desc {
    font-size: 15px;
    margin-bottom: 28px;
  }

  .cta-download-box {
    padding: 24px 16px;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 0;
  }

  .cta-buttons {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .store-btn {
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
    grid-column: span 1 !important;
  }

  /* 页脚：H5 紧凑现代化多列布局 */
  .footer {
    padding: 44px 0 24px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 16px;
    margin-bottom: 28px;
  }

  .footer-brand {
    grid-column: 1 / -1;
    margin-bottom: 2px;
  }

  .footer-brand .logo {
    margin-bottom: 10px;
  }

  .footer-brand p {
    max-width: 100%;
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 12px;
  }

  .footer-col {
    grid-column: span 1;
  }

  .footer-col-download {
    grid-column: 1 / -1;
    margin-top: 6px;
    padding-top: 18px;
    border-top: 1px dashed var(--slate-200);
  }

  .footer-col-download .footer-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .footer-col-download .footer-links a {
    display: inline-flex;
    align-items: center;
    background: var(--slate-50);
    border: 1px solid var(--slate-200);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 12.5px;
    color: var(--slate-700);
    line-height: 1.2;
    transition: all 0.2s ease;
  }

  .footer-col-download .footer-links a:hover,
  .footer-col-download .footer-links a:active {
    background: var(--mint-50);
    border-color: var(--mint-300);
    color: var(--mint-700);
    transform: translateY(-1px);
  }

  .footer-title {
    font-size: 14px;
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--slate-900);
  }

  .footer-links {
    gap: 8px;
    font-size: 13px;
  }

  .footer-links a {
    padding: 3px 0;
    color: var(--slate-600);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 10px;
    padding-top: 20px;
  }

  .footer-copy {
    font-size: 11.5px;
    color: var(--slate-500);
    line-height: 1.5;
    word-break: break-word;
  }

  .footer-icp a {
    font-size: 11.5px;
    color: var(--slate-500);
    padding: 3px 12px;
    background: var(--slate-50);
    border-radius: 999px;
    border: 1px solid var(--slate-200);
    display: inline-block;
    transition: all 0.2s ease;
  }

  .footer-icp a:hover,
  .footer-icp a:active {
    color: var(--mint-600);
    border-color: var(--mint-300);
    background: var(--mint-50);
  }

  /* 返回顶部按钮在移动端位置 */
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
    font-size: 18px;
  }
}

/* ==========================================================================
   22. 超小屏移动端优化 (width <= 380px)
   ========================================================================== */
@media (max-width: 380px) {
  .showcase-grid {
    gap: 8px;
  }

  .showcase-img {
    height: 180px;
    padding: 10px 6px 0;
  }

  .showcase-mockup {
    max-width: 115px;
  }

  .showcase-body {
    padding: 10px 6px 12px;
  }

  .showcase-title {
    font-size: 12.5px;
  }

  .showcase-desc {
    font-size: 10.5px;
    line-height: 1.35;
  }

  .footer-grid {
    gap: 20px 12px;
  }
}

/* --------------------------------------------------------------------------
   22. 减弱动态偏好 (prefers-reduced-motion)
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .phone-frame {
    transform: none;
    transition: none;
  }
  .floating-card {
    animation: none;
  }
  html {
    scroll-behavior: auto;
  }
}