/* ===== 完全Apple风格 ===== */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"SF Pro SC","SF Pro Text","SF Pro Display",-apple-system,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;background:#fff;color:#1d1d1f;line-height:1.47059;letter-spacing:-.022em;-webkit-font-smoothing:antialiased}
a{color:#06c;text-decoration:none}
img{display:block;max-width:100%;height:auto}

/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:9999;background:rgba(0,0,0,.92);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px)}
.nav-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 22px;height:44px}
.nav-logo{color:#f5f5f7;font-size:14px;font-weight:400;letter-spacing:1px;opacity:.8}
.nav-links{display:flex;gap:24px}
.nav-links a{color:#f5f5f7;font-size:12px;opacity:.56;transition:opacity .2s;font-weight:400;letter-spacing:-.01em}
.nav-links a:hover,.nav-links a.active{opacity:.88}

/* ===== Hero ===== */
.hero{background:#000;color:#f5f5f7;text-align:center;padding:140px 24px 80px}
.hero h1{font-size:56px;font-weight:700;letter-spacing:-.005em;background:linear-gradient(180deg,#fff,rgba(255,255,255,.6));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.07143}
.hero p{font-size:24px;font-weight:400;letter-spacing:.009em;color:#86868b;margin-top:8px}
.hero .cta{display:inline-block;font-size:17px;color:#2997ff;margin-top:20px;font-weight:400}
.hero .cta:hover{text-decoration:underline}
.hero .cta:after{content:" ›";font-size:19px}

/* ===== 单元区 ===== */
.section{padding:80px 24px}
.section.dark{background:#000;color:#f5f5f7}
.section.gray{background:#f5f5f7}
.section-title{text-align:center;font-size:48px;font-weight:700;letter-spacing:-.003em;margin-bottom:8px;line-height:1.08349}
.section-sub{text-align:center;font-size:24px;color:#86868b;font-weight:400;margin-bottom:50px}

/* ===== 产品分类圆角卡片 ===== */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:1000px;margin:0 auto}
.cat-card{background:#f5f5f7;border-radius:12px;padding:40px 16px;text-align:center;text-decoration:none;color:#1d1d1f;transition:all .2s cubic-bezier(.4,0,.6,1)}
.cat-card:hover{background:#e8e8ed}
.cat-card .icon{font-size:36px;margin-bottom:10px}
.cat-card .name{font-size:17px;font-weight:600;margin-bottom:2px}
.cat-card .count{font-size:12px;color:#86868b}

/* ===== 产品网格 ===== */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-width:1000px;margin:0 auto}
.prod-card{border-radius:12px;overflow:hidden;text-decoration:none;color:#1d1d1f;background:#f5f5f7;transition:all .2s}
.prod-card:hover{transform:scale(1.02)}
.prod-img{height:240px;display:flex;align-items:center;justify-content:center;padding:30px}
.prod-img img{max-width:80%;max-height:100%;object-fit:contain}
.prod-info{padding:0 18px 20px}
.prod-tag{font-size:11px;color:#06c;font-weight:500;letter-spacing:.02em;margin-bottom:2px}
.prod-info h3{font-size:16px;font-weight:600;letter-spacing:-.01em}

/* ===== Filter ===== */
.filter{text-align:center;padding:12px 0 30px;max-width:1000px;margin:0 auto}
.filter a{display:inline-block;padding:5px 16px;margin:3px;border-radius:100px;font-size:12px;color:#1d1d1f;background:#e8e8ed;border:1px solid transparent;transition:all .2s}
.filter a:hover,.filter a.active{background:transparent;border-color:#1d1d1f}

/* ===== 内容页Hero ===== */
.page-hero{background:#f5f5f7;text-align:center;padding:100px 24px 60px}
.page-hero h1{font-size:48px;font-weight:700;letter-spacing:-.003em;margin-bottom:6px}
.page-hero p{font-size:22px;color:#86868b;font-weight:400}

/* ===== 内容区块 ===== */
.content-block{max-width:700px;margin:50px auto;padding:0 24px}
.content-block p{font-size:16px;color:#515154;line-height:1.7}

/* ===== 产品详情 ===== */
.detail-wrap{max-width:900px;margin:80px auto 40px;padding:0 24px}
.detail-img{background:#f5f5f7;border-radius:12px;padding:50px;text-align:center;margin-bottom:30px}
.detail-img img{max-width:100%;max-height:450px;object-fit:contain;margin:0 auto}
.detail-info{max-width:600px;margin:0 auto;text-align:center}
.detail-info .tag{color:#06c;font-size:12px;font-weight:500;letter-spacing:.02em;display:block;margin-bottom:6px}
.detail-info h2{font-size:32px;font-weight:600;margin-bottom:16px}
.detail-info .desc{font-size:16px;color:#515154;line-height:1.64286;text-align:left}

/* ===== 支持页 ===== */
.support-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px;max-width:1000px;margin:0 auto 60px}
.support-card{background:#f5f5f7;border-radius:12px;padding:30px;text-decoration:none;color:#1d1d1f;transition:all .2s}
.support-card:hover{background:#e8e8ed}
.support-card .icon{font-size:30px;margin-bottom:8px}
.support-card h3{font-size:16px;font-weight:600;margin-bottom:4px}
.support-card p{font-size:13px;color:#86868b;line-height:1.5}
.video-section{background:#000;border-radius:12px;padding:50px 30px;text-align:center;color:#f5f5f7;max-width:1000px;margin:0 auto 50px}
.video-section h3{font-size:22px;font-weight:600;margin-bottom:6px}
.video-section p{color:#86868b;font-size:14px}

/* ===== 底部 ===== */
.footer{background:#f5f5f7;padding:20px 0;text-align:center;font-size:11px;color:#86868b;border-top:1px solid #d2d2d7}

/* ===== 响应式 ===== */
@media(max-width:834px){
  .hero h1{font-size:40px}
  .hero p{font-size:19px}
  .section-title{font-size:36px}
  .section-sub{font-size:19px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .nav-links{gap:12px}
  .nav-links a{font-size:11px}
  .hero{padding:120px 16px 60px}
  .hero h1{font-size:32px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .prod-grid{grid-template-columns:1fr}
  .section-title{font-size:28px}
  .page-hero h1{font-size:32px}
  .detail-info h2{font-size:24px}
}

/* ===== 手机增强优化 ===== */
@media(max-width:480px){
  .nav-inner{padding:0 14px;height:40px}
  .nav-logo{font-size:12px}
  .nav-links{gap:8px}
  .nav-links a{font-size:10px;white-space:nowrap}
  .nav-cn{font-size:8px!important}
  .hero{padding:100px 14px 50px}
  .hero h1{font-size:28px}
  .hero p{font-size:17px}
  .hero .cta{font-size:15px}
  .section{padding:50px 14px}
  .section-title{font-size:24px}
  .section-sub{font-size:17px;margin-bottom:30px}
  .cat-grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .cat-card{padding:24px 10px}
  .cat-card .icon{font-size:28px;margin-bottom:6px}
  .cat-card .name{font-size:14px}
  .cat-card .cn-name{font-size:9px!important}
  .cat-card .count{font-size:10px}
  .prod-grid{grid-template-columns:1fr;gap:10px}
  .prod-img{height:180px;padding:20px}
  .prod-info h3{font-size:14px}
  .page-hero{padding:80px 14px 40px}
  .page-hero h1{font-size:28px}
  .page-hero p{font-size:17px}
  .content-block{padding:0 14px}
  .filter a{padding:4px 12px;font-size:11px;margin:2px}
  .detail-wrap{margin:60px auto 30px;padding:0 14px}
  .detail-img{padding:30px}
  .detail-info h2{font-size:20px}
  .detail-info .desc{font-size:14px}
  .footer{padding:14px 0;font-size:10px}
  .about-wrap{margin:0 auto 40px;padding:0 14px}
  .contact-wrap{padding:24px 18px}
}

@media(max-width:380px){
  .nav-links{gap:5px}
  .nav-links a{font-size:9px}
  .hero h1{font-size:24px}
  .cat-grid{grid-template-columns:1fr 1fr;gap:6px}
  .cat-card{padding:18px 8px}
  .cat-card .icon{font-size:24px}
}

/* 分页按钮 */
@media(max-width:480px){

/* 当前页明显标记 */

/* 分页按钮 */
.page-btn{
  display:inline-block;
  padding:8px 14px;
  margin:0 3px;
  border-radius:6px;
  text-decoration:none;
  font-size:14px;
  background:#f5f5f7;
  color:#1d1d1f;
  transition:all 0.2s
}
.page-btn:hover{background:#e8e8ed}
.page-btn.active-page{
  background:#1d1d1f;
  color:#fff;
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-color:#0071e3;
  text-decoration-thickness:3px;
  pointer-events:none
}
@media(max-width:480px){
  .page-btn{padding:6px 10px;font-size:12px;margin:2px}
}

/* R标控制 */

/* R标 ® */
.nav-logo sup{font-size:10px;vertical-align:super;line-height:1}
.hero h1 sup{font-size:20px;vertical-align:top;position:relative;top:2px}

/* R标控制 - 全局覆盖 */
.nav-logo sup{font-size:9px!important;vertical-align:super;top:auto}
.hero h1 sup{font-size:18px!important;vertical-align:top;position:relative;top:0}

/* R标 - 独立控制不依赖sup */
.nav-logo .reg{font-size:9px;vertical-align:super;line-height:1}
.hero h1 .reg{font-size:18px;vertical-align:top;display:inline-block;margin-top:0}