/* ========== Reset & Base ========== */
 * {
   box-sizing: border-box;
   margin: 0;
   padding: 0;
 }

 body {
   font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
     "Helvetica Neue", Arial, sans-serif;
   color: #1d1d1f;
   background: #fff;
   line-height: 1.6;
 }

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

 section {
   padding: 120px 24px;
 }

 .section-divider {
   height: 1px;
   background: linear-gradient(to right,
       transparent,
       #ddd,
       transparent);
 }

 .section-alt {
   background: #f5f5f7;
 }

 .section-header {
   max-width: 800px;
   margin: 0 auto 48px;
   text-align: center;
 }

 .section-header p {
   margin-top: 8px;
   color: #777;
 }

 h1,
 h2 {
   font-weight: 600;
 }

 /* ========== Navbar ========== */
 .navbar {
   position: sticky;
   top: 0;
   z-index: 100;
   background: rgba(255, 255, 255, 0.9);
   backdrop-filter: blur(12px);
   border-bottom: 1px solid #eee;
 }

 .nav-inner {
   max-width: 1200px;
   margin: auto;
   padding: 16px 24px;
   display: flex;
   justify-content: space-between;
   align-items: center;
 }

 .logo {
   display: flex;
   align-items: center;
   gap: 10px;
   font-size: 20px;
   font-weight: 600;
 }

 .logo img {
   height: 28px;
 }

 .nav {
   display: flex;
   gap: 24px;
 }

 .nav a {
   text-decoration: none;
   color: #333;
   font-size: 16px;
 }

 /* ========== Hero ========== */
 .hero {
   text-align: center;
   padding-top: 140px;
   position: relative;
   overflow: hidden;
 }

 .hero::before {
   content: '';
   position: absolute;
   inset: 0;
   background:
     radial-gradient(ellipse at 50% 30%,
       rgba(0, 0, 0, 0.035),
       transparent 65%);
   z-index: -1;
 }


 .hero-title {
   font-size: 48px;
   letter-spacing: -0.02em;
 }

 .hero-subtitle {
   font-size: 20px;
   margin-top: 12px;
   color: #555;
 }

 .hero-desc {
   margin-top: 16px;
   font-size: 16px;
   color: #888;
 }

 .hero-img {
   margin-top: 60px;
   max-width: 960px;
   margin-left: auto;
   margin-right: auto;
   filter: drop-shadow(0 40px 80px rgba(0, 0, 0, 0.12));

   /* 👇 关键：边缘渐隐 */
   -webkit-mask-image: radial-gradient(ellipse at center,
       #000 60%,
       rgba(0, 0, 0, 0.6) 85%,
       rgba(0, 0, 0, 0.2) 90%,
       transparent 92%);
 }

 /* ========== Carousel Common ========== */
 .carousel {
   max-width: 1100px;
   margin: auto;
 }

 .carousel-shell {
   position: relative;
 }

 .carousel-viewport {
   overflow: hidden;
   touch-action: pan-y;
 }

 .carousel-track {
   display: flex;
   transition: transform 0.45s ease;
 }

 .carousel-track img {
   flex-shrink: 0;
   width: 100%;
 }

 .carousel-btn {
   position: absolute;
   top: 50%;
   transform: translateY(-50%);
   z-index: 5;
   width: 42px;
   height: 42px;
   border-radius: 50%;
   border: none;
   background: rgba(0, 0, 0, 0.45);
   color: #fff;
   font-size: 22px;
   cursor: pointer;
 }

 .carousel-btn.prev {
   left: -20px;
 }

 .carousel-btn.next {
   right: -20px;
 }

 /* Dots */
 .carousel-dots {
   display: flex;
   justify-content: center;
   gap: 8px;
   margin-top: 16px;
 }

 .carousel-dots span {
   width: 8px;
   height: 8px;
   border-radius: 50%;
   background: #ccc;
   cursor: pointer;
 }

 .carousel-dots span.active {
   background: #333;
 }

 /* ========== Web (Safari Mock) ========== */
 .browser-frame {
   background: #f5f5f7;
   border-radius: 16px;
   overflow: hidden;
   box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
 }

 .browser-bar {
   height: 36px;
   display: flex;
   align-items: center;
   gap: 8px;
   padding: 0 12px;
   background: #e6e6ea;
 }

 .browser-bar .dot {
   width: 12px;
   height: 12px;
   border-radius: 50%;
 }

 .dot.red {
   background: #ff5f57;
 }

 .dot.yellow {
   background: #febc2e;
 }

 .dot.green {
   background: #28c840;
 }

 /* ========== App (iPhone Mock) ========== */
 .iphone-frame {
   width: 360px;
   margin: auto;
   padding: 18px;
   background: #000;
   border-radius: 48px;
   box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);
 }

 .iphone-screen {
   background: #fff;
   border-radius: 32px;
   overflow: hidden;
 }

 .carousel.app .carousel-viewport {
   height: 620px;
 }

 .carousel.app img {
   height: 100%;
   object-fit: contain;
   background: #fff;
 }

 /* ========== Features ========== */
 .features {
   max-width: 900px;
   margin: auto;
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
   gap: 32px;
 }

 .feature-item {
   background: #fff;
   padding: 24px;
   border-radius: 16px;
   line-height: 1.8;
   transition: transform 0.25s ease, box-shadow 0.25s ease;
 }

 .feature-item:hover {
   transform: translateY(-4px);
   box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
 }

 .badge {
   display: inline-block;
   font-size: 13px;
   padding: 4px 10px;
   border-radius: 12px;
   margin-bottom: 12px;
   color: #fff;
 }

 .badge-blue {
   background: #007aff;
 }

 .badge-purple {
   background: #8e44ad;
 }

 .badge-orange {
   background: #f39c12;
 }

 .badge-green {
   background: #27ae60;
 }

 .badge-pink {
   background: #e84393;
 }

 .badge-red {
   background: #ff0000;
 }

  /* ========== 公司业务简介 ========== */

 .company-intro {
  background: #fff;
  padding: 120px 24px 100px;
}

.company-card {
max-width: 900px;
  margin: 0 auto;
  background: #fff;
  border-radius: 20px;
  padding: 48px 56px;

  box-shadow:
    /* 主体阴影（下方） */
    0 16px 40px rgba(0, 0, 0, 0.08),
    
    /* 顶部反向阴影，制造分离感 */
    0 -2px 6px rgba(0, 0, 0, 0.03),
    
    /* 内部高光边 */
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}


.company-content {
  font-size: 16px;
  line-height: 1.9;
  color: #444;
}

.company-content p {
  margin-bottom: 22px;
}

.company-content strong {
  font-weight: 600;
  color: #1d1d1f;
}

@media (max-width: 768px) {
  .company-card {
    padding: 28px 24px;
    border-radius: 16px;
  }

  .company-content {
    font-size: 15px;
    line-height: 1.8;
  }
}


 /* ========== Contact ========== */
 .contact {
   background: #ececf0;
   padding: 120px 24px 100px;
 }

 .contact-list {
   max-width: 760px;
   margin: 0 auto;
   background: #fff;
   border-radius: 16px;
   padding: 12px 32px;
   box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
 }

 .contact-row {
   display: flex;
   justify-content: space-between;
   align-items: center;
   padding: 22px 0;
   border-bottom: 1px solid #eee;
 }

 .contact-label {
   font-size: 15px;
   color: #888;
   flex-shrink: 0;
 }

 .contact-value {
   font-size: 17px;
   color: #1d1d1f;
   font-weight: 500;
   text-align: right;
   word-break: break-all;
 }


 /* ========== Footer ========== */
 footer {
   background: #fff;
   margin-top: 0;
   padding: 40px 24px;
   text-align: center;
   color: #999;
   font-size: 14px;
   border-top: 1px solid #eee;
 }

 html {
   scroll-behavior: smooth;
   /* 兜底方案 */
 }

 /* ============================= */
 /* ===== Mobile Responsive ===== */
 /* ============================= */

 @media (max-width: 768px) {

   /* ---------- Global ---------- */
   section {
     padding: 72px 16px;
   }

   .section-header {
     margin-bottom: 32px;
   }

   /* ---------- Navbar ---------- */
   .nav-inner {
     padding: 12px 16px;
   }

   .logo {
     font-size: 16px;
   }

   .logo img {
     height: 24px;
   }

   .nav {
     gap: 16px;
   }

   .nav a {
     font-size: 12px;
   }

   /* ---------- Hero ---------- */
   .hero {
     padding-top: 96px;
   }

   .hero-title {
     font-size: 32px;
   }

   .hero-subtitle {
     font-size: 16px;
   }

   .hero-desc {
     font-size: 14px;
   }

   .hero-img {
     margin-top: 36px;
     max-width: 100%;
     filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.12));
   }

   /* ---------- Carousel Buttons ---------- */
   .carousel-btn.prev {
     left: 8px;
   }

   .carousel-btn.next {
     right: 8px;
   }

   .carousel-btn {
     width: 36px;
     height: 36px;
     font-size: 18px;
   }

   /* ---------- Web Carousel ---------- */
   .browser-frame {
     border-radius: 12px;
   }

   .browser-bar {
     height: 28px;
   }

   .browser-bar .dot {
     width: 10px;
     height: 10px;
   }

   /* 在手机上弱化“Safari 外壳感” */
   .carousel.web {
     max-width: 100%;
   }

   /* ---------- App Carousel ---------- */
   .iphone-frame {
     width: 280px;
     padding: 14px;
     border-radius: 36px;
   }

   .iphone-screen {
     border-radius: 24px;
   }

   .carousel.app .carousel-viewport {
     height: 480px;
   }

   /* ---------- Features ---------- */
   .features {
     grid-template-columns: 1fr;
     gap: 20px;
   }

   .feature-item {
     padding: 20px;
   }

   /* ---------- Footer ---------- */
   footer {
     padding: 32px 16px;
     font-size: 13px;
   }
 }

 /* ===== Small Mobile (iPhone SE / mini) ===== */
 @media (max-width: 480px) {
   .logo {
     font-size: 16px;
   }

   .logo img {
     height: 24px;
   }

   .hero-title {
     font-size: 28px;
   }

   .hero-subtitle {
     font-size: 14px;
   }

   .hero-desc {
     font-size: 14px;
   }

   .nav {
     gap: 10px;
   }

   .nav a {
     font-size: 10px;
   }

   .carousel.app .carousel-viewport {
     height: 420px;
   }

   .iphone-frame {
     width: 250px;
   }
 }

 @media (max-width: 640px) {
   .contact-row {
     flex-direction: column;
     align-items: flex-start;
     gap: 6px;
   }

   .contact-value {
     text-align: left;
     font-size: 16px;
   }
 }