*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:"Noto Sans TC", Arial, sans-serif;
  color:#1a1a1a;
  background:#fff;
  line-height:1.6;
}

img{
  display:block;
  width:100%;
}

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

.container{
  width:min(1180px, calc(100% - 32px));
  margin:0 auto;
}

.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid #eee;
}

.nav{
  min-height:74px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}

.logo{
  font-size:24px;
  font-weight:800;
  letter-spacing:.04em;
}

.menu{
  display:flex;
  align-items:center;
  gap:24px;
}

.menu a{
  font-size:15px;
}

.menu-toggle{
  display:none;
  border:0;
  background:none;
  font-size:28px;
  cursor:pointer;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:14px 22px;
  border-radius:999px;
  background:#111;
  color:#fff;
  font-weight:700;
}

.btn-light{
  background:#f2f2f2;
  color:#111;
}

.btn-outline{
  border:1px solid #111;
  background:transparent;
}

.hero{
  padding:72px 0;
  background:linear-gradient(180deg, #fafafa 0%, #ffffff 100%);
}

.hero-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:48px;
  align-items:center;
}

.eyebrow,
.section-tag{
  color:#777;
  font-size:13px;
  letter-spacing:.18em;
  text-transform:uppercase;
  margin-bottom:10px;
}

.hero h1{
  font-size:56px;
  line-height:1.1;
  margin:0 0 18px;
}

.hero p{
  font-size:18px;
  color:#555;
  margin:0 0 24px;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}

.hero-visual{
  position:relative;
  min-height:520px;
}

.device{
  position:absolute;
  border-radius:24px;
  overflow:hidden;
  box-shadow:0 20px 50px rgba(0,0,0,.12);
  background:#fff;
}

.laptop{
  width:78%;
  right:0;
  top:70px;
}

.phone{
  width:26%;
}

.phone-left{
  left:4%;
  top:0;
}

.phone-right{
  left:18%;
  bottom:10px;
}

.intro,
.features,
.services,
.stats,
.cases,
.faq,
.contact{
  padding:88px 0;
}

.intro-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
  align-items:start;
}

.intro-card,
.card,
.service-item,
.stat,
.case-card,
.faq-list details,
.contact-box{
  border:1px solid #e9e9e9;
  border-radius:24px;
  background:#fff;
}

.intro-card{
  padding:28px;
}

.section-head{
  max-width:760px;
  margin:0 auto 42px;
  text-align:center;
}

.section-head h2,
.intro h2,
.contact h2{
  font-size:40px;
  line-height:1.2;
  margin:0 0 14px;
}

.section-head p,
.intro p,
.contact p{
  color:#666;
}

.cards{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:20px;
}

.card{
  padding:28px;
}

.service-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:20px;
}

.service-item{
  padding:30px;
}

.stats-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:18px;
}

.stat{
  padding:30px 20px;
  text-align:center;
}

.stat strong{
  display:block;
  font-size:34px;
  margin-bottom:8px;
}

.stat span{
  color:#666;
}

.case-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:20px;
}

.case-card{
  overflow:hidden;
}

.case-card img{
  aspect-ratio:4/3;
  object-fit:cover;
}

.case-card h3{
  margin:0;
  padding:18px;
  font-size:18px;
}

.faq-list{
  max-width:860px;
  margin:0 auto;
  display:grid;
  gap:16px;
}

.faq-list details{
  padding:20px 24px;
}

.faq-list summary{
  cursor:pointer;
  font-weight:700;
}

.faq-list p{
  color:#666;
  margin:12px 0 0;
}

.contact-box{
  padding:34px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}

.site-footer{
  padding:26px 0 40px;
  border-top:1px solid #eee;
}

.footer-inner{
  display:flex;
  justify-content:center;
  color:#666;
}

@media (max-width: 1024px){
  .hero-grid,
  .intro-grid,
  .contact-box{
    grid-template-columns:1fr;
    display:grid;
  }

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

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

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

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

  .hero-visual{
    min-height:420px;
  }
}

@media (max-width: 768px){
  .menu{
    position:absolute;
    top:74px;
    left:0;
    right:0;
    background:#fff;
    border-bottom:1px solid #eee;
    display:none;
    flex-direction:column;
    padding:20px;
  }

  .menu.active{
    display:flex;
  }

  .menu-toggle{
    display:block;
  }

  .hero h1{
    font-size:38px;
  }

  .section-head h2,
  .intro h2,
  .contact h2{
    font-size:30px;
  }

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

  .hero-visual{
    min-height:320px;
  }

  .laptop{
    width:70%;
  }

  .phone{
    width:24%;
  }
}

.btn-outline{
  background: #fff !important;
  color: #111 !important;
  border: 1px solid #111 !important;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 600;
  transition: all .25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-outline:hover{
  background: #111 !important;
  color: #fff !important;
}

.case-card{
  display:block;
  border-radius:24px;
  overflow:hidden;
  transition:.3s;
}

.case-card:hover{
  transform:translateY(-6px);
  box-shadow:0 20px 40px rgba(0,0,0,.15);
}

.case-card img{
  aspect-ratio:4/3;
  object-fit:cover;
}