/* ===== 全局重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #fff;
  background: #0a0a0a;
  overflow-x: hidden;
}

/* ===== 背景视频 ===== */
video#bgv {
  position: fixed;
  right: 0; bottom: 0;
  min-width: 100%; min-height: 100%;
  z-index: -2;
  object-fit: cover;
  filter: brightness(0.4);
}

/* ===== 声音提示 ===== */
.sound-tip {
  position: fixed;
  right: 14px; bottom: 14px;
  background: rgba(0,0,0,.7);
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  z-index: 999;
  border: 1px solid rgba(255,255,255,.2);
  transition: all .3s;
}
.sound-tip:hover { background: rgba(255,213,74,.9); color: #111; }

/* ===== 顶部导航 ===== */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 28px;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.topbar .logo { font-size: 20px; font-weight: 700; color: #ffd54a; }
.nav-links a {
  color: #fff;
  text-decoration: none;
  margin-left: 22px;
  font-size: 15px;
  opacity: .8;
  transition: opacity .2s;
}
.nav-links a:hover { opacity: 1; color: #ffd54a; }

/* ===== 主视觉区 ===== */
.hero {
  text-align: center;
  padding: 80px 20px 50px;
}
.hero h1 {
  font-size: 42px;
  letter-spacing: 2px;
  text-shadow: 0 4px 20px rgba(0,0,0,.5);
  margin-bottom: 12px;
}
.hero h2 {
  font-size: 22px;
  color: #ffd54a;
  margin-bottom: 16px;
}
.hero .subtitle {
  font-size: 17px;
  opacity: .9;
  max-width: 600px;
  margin: 0 auto 30px;
  line-height: 1.7;
}
.cta-btn {
  display: inline-block;
  background: linear-gradient(135deg, #ffd54a, #ff9800);
  color: #111;
  font-weight: 700;
  font-size: 18px;
  padding: 14px 38px;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: 0 6px 24px rgba(255,152,0,.4);
  transition: transform .2s, box-shadow .2s;
}
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,152,0,.6); }
.cta-btn.big { font-size: 20px; padding: 16px 48px; margin-top: 20px; }

/* ===== 通用区块 ===== */
section { padding: 50px 20px; max-width: 1000px; margin: 0 auto; }

/* ===== 价格区 ===== */
.price {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
  padding-top: 20px;
}
.card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 18px;
  padding: 30px 28px;
  text-align: center;
  width: 300px;
  position: relative;
  backdrop-filter: blur(6px);
  transition: transform .3s;
}
.card:hover { transform: translateY(-6px); }
.card.hot {
  border-color: #ffd54a;
  box-shadow: 0 0 30px rgba(255,213,74,.25);
  background: rgba(255,213,74,.06);
}
.card .badge {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: #ff4747;
  color: #fff;
  font-size: 13px;
  padding: 4px 14px;
  border-radius: 20px;
  font-weight: 700;
}
.card-icon { font-size: 42px; margin-bottom: 10px; }
.card h3 { font-size: 20px; margin-bottom: 12px; }
.card .big { font-size: 36px; color: #ffd54a; margin: 12px 0; font-weight: 800; }
.card .big span { font-size: 14px; color: #ccc; font-weight: 400; }
.card ul { list-style: none; line-height: 2.2; text-align: left; padding: 0 10px; }
.card ul li::before { content: "✅ "; }

/* ===== NFC碰一碰演示区（核心） ===== */
.nfc-demo-section {
  background: rgba(0,0,0,.5);
  border-radius: 20px;
  padding: 40px 20px !important;
  text-align: center;
  border: 1px solid rgba(255,213,74,.15);
}
.nfc-demo-section h2 {
  font-size: 26px;
  color: #ffd54a;
  margin-bottom: 8px;
}
.demo-sub {
  color: #aaa;
  font-size: 14px;
  margin-bottom: 30px;
}

/* 吧唧案例按钮 */
.baji-cases {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 22px;
  margin-bottom: 36px;
}
.case-item {
  cursor: pointer;
  transition: transform 0.3s;
}
.case-item:hover { transform: scale(1.1); }
.case-item p {
  margin-top: 8px;
  color: #ddd;
  font-size: 14px;
  font-weight: 600;
}

/* 吧唧圆形按钮 */
.baji-circle {
  width: 80px; height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: pointer;
  box-shadow: 0 0 0 3px #fff, 0 0 20px rgba(255,255,255,0.15);
  transition: transform 0.2s;
}
.baji-circle .emoji { font-size: 30px; }
.baji-circle::after {
  content: '';
  position: absolute;
  width: 100%; height: 100%;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.5);
  animation: ripple 2s infinite;
}
@keyframes ripple {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.7); opacity: 0; }
}
.baji-circle:active { transform: scale(0.9); }

/* 颜色 */
.baji-circle.pet    { background: linear-gradient(135deg, #66BB6A, #2E7D32); }
.baji-circle.baby   { background: linear-gradient(135deg, #FF8A65, #D84315); }
.baji-circle.family { background: linear-gradient(135deg, #7986CB, #283593); }
.baji-circle.selfie { background: linear-gradient(135deg, #4DB6AC, #00695C); }
.baji-circle.club   { background: linear-gradient(135deg, #BA68C8, #6A1B9A); }
.baji-circle.gift   { background: linear-gradient(135deg, #EF5350, #B71C1C); }

/* 案例说明 */
.case-descriptions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  text-align: left;
  max-width: 800px;
  margin: 0 auto;
}
.case-desc {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 10px;
  padding: 12px 16px;
}
.case-desc h4 { font-size: 15px; margin-bottom: 4px; color: #ffd54a; }
.case-desc p { font-size: 13px; color: #ccc; line-height: 1.5; }

/* ===== NFC弹窗（模拟手机） ===== */
.nfc-modal {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.8);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(6px);
}
.nfc-modal.show { display: flex; }

.modal-content { position: relative; }

.close-btn {
  position: absolute;
  top: -44px; right: -4px;
  background: rgba(255,255,255,0.2);
  border: none;
  color: #fff;
  font-size: 22px;
  width: 38px; height: 38px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
  transition: background .2s;
}
.close-btn:hover { background: rgba(255,80,80,0.7); }

/* 手机外形 */
.phone-screen {
  width: 310px;
  height: 580px;
  background: #111122;
  border-radius: 38px;
  border: 10px solid #2a2a3e;
  overflow: hidden;
  position: relative;
  transform: translateY(50px) scale(0.9);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 25px 70px rgba(0,0,0,0.6), 0 0 40px rgba(100,100,255,0.1);
}
.phone-screen.slide-up {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* 手机刘海 */
.phone-notch {
  width: 100px;
  height: 22px;
  background: #2a2a3e;
  border-radius: 0 0 14px 14px;
  margin: 0 auto 6px;
}

/* 手机状态栏 */
.phone-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 20px 8px;
  background: #0d0d1a;
  color: #fff;
  font-size: 12px;
}

/* 手机内容 */
.phone-body {
  padding: 16px;
  color: #fff;
  height: calc(100% - 50px);
  overflow-y: auto;
}
.phone-nfc-bar {
  text-align: center;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 12px;
  margin-bottom: 14px;
  font-weight: 600;
}
.phone-content h3 {
  font-size: 19px;
  margin-bottom: 4px;
}
.phone-sub {
  color: #aaa;
  font-size: 13px;
  margin-bottom: 18px;
}
.phone-main {
  border-radius: 14px;
  padding: 28px 16px;
  text-align: center;
  font-size: 16px;
  margin-bottom: 14px;
  min-height: 110px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.phone-main small {
  display: block;
  margin-top: 8px;
  color: #888;
  font-size: 12px;
}
.phone-link {
  background: rgba(255,255,255,0.06);
  border: 1px solid;
  border-radius: 10px;
  padding: 12px;
  font-size: 13px;
  text-align: center;
  margin-bottom: 14px;
}
.phone-action button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 10px;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

.tip {
  color: #aaa;
  font-size: 13px;
  margin-top: 16px;
  text-align: center;
}
.tip-sub {
  color: #666;
  font-size: 12px;
  margin-top: 4px;
  text-align: center;
}

/* ===== 设备清单 ===== */
.equip h2 { text-align: center; font-size: 26px; margin-bottom: 10px; }
.fee-line { text-align: center; font-size: 18px; margin-bottom: 28px; }
.fee-line b { color: #ffd54a; font-size: 26px; }
.equip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}
.equip-item {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 16px;
  transition: background .2s;
}
.equip-item:hover { background: rgba(255,213,74,.1); }

/* ===== 作品展示 ===== */
.gallery h2 { text-align: center; font-size: 26px; margin-bottom: 6px; }
.gallery-tip { text-align: center; font-size: 13px; opacity: .6; margin-bottom: 24px; }
.baji-list {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}
.baji-list figure { width: 160px; text-align: center; }
.baji-frame {
  width: 145px; height: 145px;
  border-radius: 50%;
  border: 5px solid #fff;
  overflow: hidden;
  margin: 0 auto 10px;
  box-shadow: 0 4px 18px rgba(0,0,0,.4);
  background: #222;
}
.baji-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.baji-list figcaption { font-size: 15px; font-weight: 600; }

/* ===== 收益测算 ===== */
.earn h2 { text-align: center; font-size: 26px; margin-bottom: 28px; }
.earn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-bottom: 36px;
}
.earn-card {
  border-radius: 16px;
  padding: 26px 22px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.earn-card.green { background: linear-gradient(135deg, #2E7D32, #1B5E20); }
.earn-card.gold  { background: linear-gradient(135deg, #F57F17, #E65100); }
.earn-card.red   { background: linear-gradient(135deg, #C62828, #8E0000); }
.earn-card h3 { font-size: 20px; margin-bottom: 10px; }
.earn-num { font-size: 34px; font-weight: 800; margin: 8px 0; }
.earn-num span { font-size: 16px; font-weight: 400; opacity: .8; }
.earn-card p { font-size: 15px; opacity: .9; }
.earn-card small { display: block; margin-top: 8px; font-size: 12px; opacity: .7; }

.earn-detail {
  background: rgba(255,255,255,.05);
  border-radius: 14px;
  padding: 24px;
  max-width: 600px;
  margin: 0 auto;
}
.earn-detail h4 { text-align: center; margin-bottom: 14px; color: #ffd54a; }
.earn-detail table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.earn-detail th {
  background: rgba(255,213,74,.15);
  padding: 8px 10px;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.earn-detail td {
  padding: 8px 10px;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.earn-note {
  text-align: center;
  font-size: 12px;
  color: #888;
  margin-top: 12px;
}

/* ===== 微信报名区 ===== */
.join { text-align: center; }
.join h2 { font-size: 26px; margin-bottom: 24px; }
.wx-box {
  display: inline-block;
  background: #fff;
  padding: 24px 30px;
  border-radius: 16px;
  color: #111;
}
.wx-qr-real {
  width: 200px; height: 200px;
  margin: 0 auto 14px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,.15);
}
.wx-qr-real img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.wx-id { font-size: 16px; margin-bottom: 6px; }
.wx-id b { color: #ff4747; font-size: 18px; }
.wx-tip { font-size: 13px; color: #888; }
.long { margin-top: 20px; color: #ffd54a; font-size: 16px; }

/* ===== 底部 ===== */
footer {
  text-align: center;
  padding: 30px 20px;
  opacity: .55;
  font-size: 13px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.footer-tip { margin-top: 6px; font-size: 12px; }

/* ===== 响应式 ===== */
@media (max-width: 700px) {
  .hero h1 { font-size: 30px; }
  .hero h2 { font-size: 18px; }
  .topbar { padding: 12px 16px; }
  .nav-links a { margin-left: 10px; font-size: 13px; }
  .card { width: 100%; max-width: 340px; }
  .baji-circle { width: 65px; height: 65px; }
  .baji-circle .emoji { font-size: 24px; }
  .phone-screen { width: 270px; height: 520px; }
  .case-descriptions { grid-template-columns: 1fr; }
}