:root{
  --bg:#fafbfd;
  --card:#ffffff;
  --muted:#6b7280;
  --accent:#0ea5a4;
  --text:#0f172a;
}
*{box-sizing:border-box}
body{font-family:Inter,system-ui,Segoe UI,Helvetica,Arial;line-height:1.6;color:var(--text);background:var(--bg);margin:0;font-size:16px}
.container{max-width:1100px;margin:0 auto;padding:48px 28px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,0.86);backdrop-filter:blur(8px);box-shadow:0 6px 18px rgba(15,23,42,0.06);border-bottom:1px solid rgba(15,23,42,0.04)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;padding:18px 0}
.logo{font-weight:800;color:var(--text);text-decoration:none;font-size:18px;margin-left:20px}
.nav a{margin-left:20px;color:var(--muted);text-decoration:none;padding:8px;border-radius:8px}
.nav .nav-cta{background:transparent;border:1px solid rgba(15,23,42,0.06);padding:8px 12px}
.hero{padding:84px 0}
.hero-center{display:flex;align-items:center;gap:48px}
.hero-column{flex:1;max-width:640px}
.hero h1{font-size:44px;line-height:1.05;margin:0 0 18px;font-weight:700}
.lead{color:var(--muted);margin:0 0 22px;font-size:18px}
.cta-row{display:flex;gap:14px;margin:20px 0}
.btn{padding:12px 18px;border-radius:12px;text-decoration:none;display:inline-flex;align-items:center;gap:10px}
.btn-primary{background:linear-gradient(90deg,var(--accent),#06b6d4);color:#fff;box-shadow:0 8px 24px rgba(6,182,180,0.12);border:none}
.btn-ghost{background:transparent;border:1px solid rgba(15,23,42,0.06);color:var(--text)}
.badges{display:flex;gap:10px;margin-top:10px}
.badge{background:rgba(14,165,164,0.08);color:var(--accent);padding:6px 10px;border-radius:999px;font-size:13px}
.hero-visual img, .hero-visual video{width:420px;height:auto;border-radius:16px;box-shadow:0 18px 40px rgba(2,6,23,0.08);display:block;object-fit:cover}

/* 视频容器与播放按钮 */
.video-wrap{position:relative;display:inline-block}
.video-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:72px;height:72px;border-radius:50%;background:rgba(0,0,0,0.5);border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 6px 20px rgba(2,6,23,0.2)}
.video-play:focus{outline:2px solid rgba(6,182,180,0.25)}
.video-play::before{content:'';display:inline-block;margin-left:6px;width:0;height:0;border-style:solid;border-width:12px 0 12px 18px;border-color:transparent transparent transparent #fff}
.video-wrap.playing .video-play{display:none}
.section-title{font-size:20px;margin:8px 0 18px}
.features{padding:48px 0}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature.card{background:var(--card);padding:28px;border-radius:14px;box-shadow:0 8px 28px rgba(9,30,30,0.03)}
.feature.card h3{margin:0 0 8px}
.screenshots{padding:40px 0}
.screens-grid{display:flex;gap:18px}
.screen{flex:1}
.screen img{width:100%;border-radius:12px;box-shadow:0 12px 40px rgba(2,6,23,0.06)}
.download-panel{padding:48px 0;text-align:center}
.store-row{display:flex;gap:16px;justify-content:center;margin-top:18px}
.store-btn{padding:12px 18px;border-radius:12px;background:var(--card);border:1px solid rgba(15,23,42,0.06);text-decoration:none;color:var(--text)}
.store-btn.primary{background:linear-gradient(90deg,var(--accent),#06b6d4);color:#fff;border:none}
.site-footer{padding:0;color:var(--muted);text-align:center}
.muted{color:var(--muted)}
@media (max-width:960px){
  .hero-center{flex-direction:column-reverse;align-items:start}
  .hero-visual img{width:100%;max-width:520px}
  .feature-grid{grid-template-columns:1fr}
  .screens-grid{flex-direction:column}
  .container{padding:28px}
}

/************/
.bottom-container {
  position: relative;
  padding: 32px 0;
  background: #51515d;
  color: #fcfcfc;
}
.bottom-container a,
.bottom-container a:hover,
.bottom-container a:active {
  color: #E0E0E0;
  text-decoration: none;
  font-size: 1.2rem;
  padding-bottom: 5px;
  border-bottom: 1px dashed #b3bcb3;
}
.bottom-container .bi-qr {
  position: relative;
  display: flex;
  flex-direction: row;
  justify-content: center;
}
.bottom-container .bi-qr .qr-item {
  width: 50%;
}
.bottom-container .bi-qr .qr-item span {
  font-size: 0.8rem;
}
.bottom-container .bi-qr .qr-item img {
  width: 120px;
}
.bottom-container .ap-contact-row {
  margin: 20px 0;
  text-align: left;
}
.bottom-container .ap-contact-row img {
  width: 1.5rem;
  vertical-align: middle;
  margin-right: 5px;
}
.bottom-container .bottom-row {
  display: flex;
  flex-direction: row;
}
.bottom-container .bottom-row .bottom-item {
  position: relative;
  width: 20%;
  text-align: center;
}
.bottom-container .bottom-row .bottom-item lable {
  display: block;
  font-weight: bold;
  color: #fcfcfc;
  margin-bottom: 15px;
}
.bottom-container .bottom-row .bottom-item div {
  margin: 10px 0;
  color: #E0E0E0;
}
.bottom-container .bottom-row .bi-qr {
  width: 30%;
}
.bottom-container .bottom-row .bi-contact {
  width: 30%;
}
.bottom-container .bottom-row .bi-contact lable {
  text-align: left;
}
.bottom-container .contact-row {
  display: none;
  position: red;
  padding: 10px;
  flex-direction: row;
  justify-content: center;
}
.bottom-container .contact-row .bottom-item-2 {
  width: 30%;
  text-align: center;
}
.bottom-container .contact-row .bi-qr {
  width: 70%;
}
.bottom-container .contact-row .bi-qr .qr-item {
  text-align: center;
}
.bottom-container .contact-row .bi-qr .qr-item img {
  width: 65%;
}
.bottom-container .contact-row .bi-qr .qr-item span {
  font-size: 0.5rem;
}
.bottom-container .bottom-copyrigth {
  color: #E0E0E0;
  margin-top: 16px;
}
.bottom-container .bottom-copyrigth div {
  margin-top: 8px;
}
.bottom-container .bottom-copyrigth div a,
.bottom-container .bottom-copyrigth div a:hover,
.bottom-container .bottom-copyrigth div a:active {
  font-size: 0.8rem;
}
.mini-header {
  position: relative;
  background: #77d3fe;
  padding-left: 32px;
  height: 100px;
  display: flex;
  align-items: center;
  flex-direction: row;
}
.mini-header .logo {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background: linear-gradient(145deg, #6fa6dc 0%, #0dabf4 30%, #8bdaff 100%);
  box-shadow: 5px 5px 10px #50baec, -5px -5px 10px #079ee2;
  cursor: pointer;
}
.mini-header .logo img {
  border-radius: 150px;
  border: 4px solid #ffffff;
  width: 70%;
  height: 70%;
  opacity: 0.8;
}
.mini-header .logo-text {
  color: white;
  margin-left: 16px;
  font-size: 1.5rem;
  cursor: pointer;
}
.mini-header .client-menu {
  position: absolute;
  color: white;
  font-size: 1.2rem;
  right: 45px;
  cursor: pointer;
}
@media screen and (max-width: 768px) {
  .bottom-container {
    font-size: 0.8rem !important;
  }
  .bottom-container a,
  .bottom-container a:hover,
  .bottom-container a:active {
    font-size: 0.8rem !important;
  }
  .bottom-container .bottom-row .bi-qr,
  .bottom-container .bottom-row .bottom-item-2 {
    display: none;
  }
  .bottom-container .bottom-row .bottom-item-1 {
    width: 30% !important;
  }
  .bottom-container .bottom-row .bi-contact {
    width: 70% !important;
  }
  .contact-row {
    display: flex !important;
  }
  .contact-row .bottom-item-3 {
    position: relative;
    text-align: center;
  }
  .contact-row .bottom-item-3 lable {
    display: block;
    font-weight: bold;
    color: #fcfcfc;
    margin-bottom: 15px;
  }
  .contact-row .bottom-item-3 div {
    margin: 5px 0;
    color: #E0E0E0;
  }
}