body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: #fff;
  color: #222;
  overflow-x: hidden;
}

.phone-island,
.phone-home-indicator,
.phone-side-button {
  display: none;
}

.phone-screen {
  position: relative;
  min-height: 100vh;
  background: #fff;
}

.page-scroll {
  min-height: 100vh;
}

#qa-layer {
  position: fixed;
  inset: 0;
  z-index: 9999;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

#qa-layer::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 200%;
  background: url("uploads/bg.js?v=1") center top / cover no-repeat;
  animation: bgMove 20s linear infinite;
  z-index: 0;
  pointer-events: none;
}

@keyframes bgMove {
  0% { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}

#qa-mask {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 1;
  pointer-events: none;
}

#qa-card {
  position: relative;
  background: #fff;
  width: 90%;
  max-width: 360px;
  border-radius: 22px;
  padding: 22px 20px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  z-index: 2;
}

.progress-text {
  font-size: 13px;
  color: #888;
  margin-bottom: 6px;
}

.progress-bar {
  height: 6px;
  background: #eee;
  border-radius: 6px;
  overflow: hidden;
}

.progress-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #ff6cab, #7366ff);
  transition: 0.3s;
}

#qa-card h1 {
  font-size: 25px;
  margin: 10px 0;
}

#qa-card p {
  font-size: 19px;
  color: #666;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 15px;
}

.option {
  background: #f5f5f5;
  padding: 14px;
  border-radius: 14px;
  text-align: center;
  cursor: pointer;
}

.option:hover {
  background: #ff4081;
  color: #fff;
}

.img-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 15px;
}

.img-option {
  height: 200px;
  border-radius: 14px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
}

.img-option:hover {
  border-color: #ff4081;
}

.img-option img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

#popup {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.popup-box {
  background: #fff;
  width: 80%;
  max-width: 280px;
  border-radius: 18px;
  padding: 20px;
  text-align: center;
}

.popup-box h2 {
  margin: 0;
  color: #ff3b3b;
  font-size: 18px;
}

.popup-box p {
  margin: 10px 0 15px;
  font-size: 14px;
}

.popup-box button {
  border: none;
  background: #ff4081;
  color: #fff;
  padding: 10px 25px;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
}

.countdown-bar {
  height: 8px;
  background: #ffd6d6;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 14px;
}

.countdown-bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: #ff3b3b;
  transition: width 2s linear;
}

.hero {
  text-align: center;
  padding: 60px 20px 40px;
  background: linear-gradient(135deg, #ff6cab, #7366ff);
  color: #fff;
  border-bottom-left-radius: 50px;
  border-bottom-right-radius: 50px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.hero img {
  width: 100px;
  height: 100px;
  border-radius: 25px;
  margin-bottom: 15px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.hero h1 {
  font-size: 28px;
  margin: 10px 0 5px;
  font-weight: 700;
}

.hero p {
  font-size: 16px;
  opacity: 0.9;
  margin: 0;
}

.download-btn {
  margin-top: 25px;
  display: inline-block;
  padding: 16px 60px;
  background: #fff;
  color: #ff4081;
  font-size: 18px;
  font-weight: 600;
  border-radius: 35px;
  text-decoration: none;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.25);
  animation: bounce 1.5s infinite;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.section {
  padding: 30px 15px;
  text-align: center;
}

.section h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}

.features {
  display: flex;
  justify-content: space-between;
  flex-wrap: nowrap;
}

.feature {
  flex: 1;
  margin: 0 5px;
  background: #fff;
  padding: 15px;
  border-radius: 15px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.06);
}

.feature svg {
  width: 28px;
  height: 28px;
  margin-bottom: 8px;
  fill: #ff4081;
}

.feature h3 {
  font-size: 15px;
  margin: 8px 0;
}

.feature p {
  font-size: 13px;
  color: #ff4081;
}

.screenshots {
  display: flex;
  overflow-x: auto;
  gap: 15px;
  padding: 20px;
  -webkit-overflow-scrolling: touch;
}

.screenshots img {
  width: 260px;
  height: 480px;
  border-radius: 20px;
  flex-shrink: 0;
  object-fit: cover;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

@media (min-width: 768px) {
  .screenshots {
    justify-content: center;
    overflow-x: hidden;
  }

  .screenshots img {
    width: 220px;
    height: 400px;
  }
}

.reviews {
  max-width: 600px;
  margin: 0 auto;
  text-align: left;
}

.review-item {
  background: #fff;
  border-radius: 15px;
  padding: 15px;
  margin-bottom: 15px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.review-item b {
  display: block;
  margin-bottom: 8px;
  color: #ff4081;
  font-size: 16px;
  font-weight: 600;
}

.review-item p {
  margin: 0;
  font-size: 14px;
  color: #444;
  line-height: 1.5;
}

.info-list {
  list-style: none;
  padding: 0;
  margin: 20px auto;
  font-size: 14px;
  max-width: 500px;
}

.info-list li {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid #eee;
}

.footer {
  text-align: center;
  font-size: 12px;
  color: #888;
  padding: 10px 15px;
  margin-top: 5px;
}

#wechat-mask {
  display: none;
}

.wechat-mask-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, .5);
  z-index: 10001;
}

.wechat-mask-pop {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 85%;
  max-width: 320px;
  transform: translate(-50%, -50%);
  background: #fff;
  border-radius: 20px;
  z-index: 10002;
  overflow: hidden;
  padding: 24px;
}

.wechat-mask-header {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.wechat-mask-logo {
  width: 50px;
  height: 50px;
  border-radius: 12px;
}

.wechat-mask-info {
  margin-left: 12px;
}

.wechat-mask-title {
  font-size: 16px;
  font-weight: 600;
  color: #333;
}

.wechat-mask-subtitle {
  font-size: 13px;
  color: #999;
  margin-top: 4px;
}

.wechat-mask-steps {
  background: #f7f8fa;
  border-radius: 12px;
  padding: 16px;
}

.wechat-mask-steps p {
  font-size: 14px;
  color: #333;
  line-height: 2;
  display: flex;
  align-items: center;
}

.wechat-mask-steps b {
  color: #ff4081;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: #ff4081;
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 600;
  margin-right: 8px;
  flex-shrink: 0;
}

.wechat-mask-divider {
  text-align: center;
  margin: 18px 0;
  position: relative;
  font-size: 12px;
  color: #ccc;
}

.wechat-mask-divider::before,
.wechat-mask-divider::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 25%;
  height: 1px;
  background: #e5e5e5;
}

.wechat-mask-divider::before {
  left: 0;
}

.wechat-mask-divider::after {
  right: 0;
}

.wechat-mask-copy {
  position: relative;
  height: 40px;
  background: #f1f6f9;
  border-radius: 20px;
  overflow: hidden;
}

.wechat-mask-copy input {
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  background: transparent;
  padding: 0 80px 0 16px;
  font-size: 13px;
  color: #999;
}

.wechat-mask-copy button {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  padding: 0 18px;
  background: linear-gradient(90deg, #ff6cab, #ff4081);
  color: #fff;
  border: none;
  border-radius: 0 20px 20px 0;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}

@media (min-width: 768px) {
  body {
    background:
      radial-gradient(circle at 16% 18%, rgba(255, 190, 221, 0.95), transparent 24%),
      radial-gradient(circle at 84% 16%, rgba(191, 214, 255, 0.88), transparent 26%),
      radial-gradient(circle at 52% 84%, rgba(214, 194, 255, 0.72), transparent 28%),
      linear-gradient(145deg, #fffafc 0%, #f7f7ff 42%, #eef4ff 100%);
    overflow: hidden;
  }

  .phone-shell {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    isolation: isolate;
    overflow: hidden;
  }

  .phone-shell::before,
  .phone-shell::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(10px);
    pointer-events: none;
    z-index: -1;
  }

  .phone-shell::before {
    width: 320px;
    height: 320px;
    top: 8%;
    left: 12%;
    background: radial-gradient(circle, rgba(255, 163, 204, 0.38) 0%, rgba(255, 163, 204, 0) 68%);
  }

  .phone-shell::after {
    width: 380px;
    height: 380px;
    right: 10%;
    bottom: 6%;
    background: radial-gradient(circle, rgba(125, 162, 255, 0.3) 0%, rgba(125, 162, 255, 0) 70%);
  }

  .phone-frame {
    position: relative;
    width: min(462px, calc(100vw - 40px));
    height: min(940px, calc(100vh - 40px));
    padding: 14px;
    border-radius: 56px;
    background: linear-gradient(155deg, #ffffff 0%, #f4f6f9 22%, #dfe4eb 52%, #ffffff 100%);
    box-shadow:
      0 30px 90px rgba(0, 0, 0, 0.28),
      0 0 0 1px rgba(255, 255, 255, 0.88),
      inset 0 0 0 1px rgba(255, 255, 255, 0.9);
    overflow: visible;
  }

  .phone-frame::before {
    content: "";
    position: absolute;
    inset: 1px;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.55) 20%, rgba(199, 207, 218, 0.34) 52%, rgba(255, 255, 255, 0.72) 100%);
    pointer-events: none;
  }

  .phone-frame::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow:
      inset 0 0 0 1px rgba(255, 255, 255, 0.72),
      inset 0 0 0 4px rgba(214, 220, 229, 0.34);
    pointer-events: none;
  }

  .phone-screen {
    position: absolute;
    inset: 14px;
    min-height: auto;
    height: auto;
    border-radius: 42px;
    overflow: hidden;
    background: #fff;
    z-index: 1;
    box-shadow: 0 0 0 1px rgba(10, 12, 16, 0.08);
  }

  .page-scroll {
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    -ms-overflow-style: none;
    scrollbar-width: none;
  }

  .page-scroll::-webkit-scrollbar {
    width: 0;
    height: 0;
  }

  .phone-screen #qa-layer,
  .phone-screen #popup {
    position: absolute;
  }

  .phone-island {
    display: block;
    position: absolute;
    top: 24px;
    left: 50%;
    width: 132px;
    height: 36px;
    transform: translateX(-50%);
    border-radius: 999px;
    background: linear-gradient(180deg, #0b0b0d 0%, #000 100%);
    box-shadow:
      inset 0 1px 1px rgba(255, 255, 255, 0.08),
      0 6px 16px rgba(0, 0, 0, 0.35);
    z-index: 3;
    pointer-events: none;
  }

  .phone-island::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 24px;
    width: 10px;
    height: 10px;
    transform: translateY(-50%);
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #3c4859, #12151b 58%, #020304 100%);
    opacity: 0.95;
  }

  .phone-island::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 24px;
    width: 46px;
    height: 8px;
    transform: translateY(-50%);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
  }

  .phone-home-indicator {
    display: block;
    position: absolute;
    bottom: 18px;
    left: 50%;
    width: 132px;
    height: 5px;
    transform: translateX(-50%);
    border-radius: 999px;
    background: rgba(18, 20, 24, 0.58);
    z-index: 3;
    pointer-events: none;
  }

  .phone-side-button {
    display: block;
    position: absolute;
    width: 4px;
    border-radius: 999px;
    background: linear-gradient(180deg, #f9fafb 0%, #cfd5de 28%, #8d95a1 100%);
    box-shadow:
      0 0 0 1px rgba(255, 255, 255, 0.35),
      0 2px 6px rgba(0, 0, 0, 0.18);
    z-index: 0;
    pointer-events: none;
  }

  .phone-side-button--mute {
    left: -2px;
    top: 136px;
    height: 28px;
  }

  .phone-side-button--volume-up {
    left: -2px;
    top: 188px;
    height: 66px;
  }

  .phone-side-button--volume-down {
    left: -2px;
    top: 268px;
    height: 66px;
  }

  .phone-side-button--power {
    right: -2px;
    top: 208px;
    height: 96px;
  }
}