/* ===== 全局重置 ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --red:#E60012;
  --red-light:#FF1A2E;
  --red-bg:#FFF5F5;
  --black:#1A1A1A;
  --gray-1:#F5F5F7;
  --gray-2:#E5E5E7;
  --gray-3:#86868B;
  --gray-4:#6E6E73;
  --white:#FFFFFF;
  --radius:20px;
  --radius-sm:12px;
  --max-width:1200px;
  --nav-height:64px;
}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","HarmonyOS Sans TC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,sans-serif;
  color:var(--black);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
img{max-width:100%;display:block}

/* ===== 顶部导航 ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--nav-height);
  background:rgba(255,255,255,0.85);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(0,0,0,0.06);
}
.nav-inner{
  max-width:var(--max-width);margin:0 auto;height:100%;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;
}
.nav-logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:20px;letter-spacing:-0.5px}
.nav-logo .heart{color:var(--red);font-size:22px}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-link{
  padding:8px 16px;border-radius:8px;font-size:15px;color:var(--gray-4);
  transition:all .2s;font-weight:500;
}
.nav-link:hover{color:var(--black);background:var(--gray-1)}
.nav-link.active{color:var(--red);font-weight:600}
.nav-cta{
  background:var(--red);color:#fff;padding:8px 20px;border-radius:20px;
  font-size:14px;font-weight:600;transition:all .2s;margin-left:8px;
}
.nav-cta:hover{background:var(--red-light);transform:translateY(-1px)}
/* 移动端菜单 */
.menu-toggle{display:none;flex-direction:column;gap:4px;padding:8px}
.menu-toggle span{width:20px;height:2px;background:var(--black);border-radius:2px;transition:all .3s}

/* ===== 页面容器 ===== */
.page{display:none;min-height:100vh;padding-top:var(--nav-height)}
.page.active{display:block;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* ===== 通用组件 ===== */
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-title{font-size:42px;font-weight:800;letter-spacing:-1px;text-align:center;margin-bottom:16px}
.section-sub{font-size:18px;color:var(--gray-3);text-align:center;margin-bottom:48px}
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--red);color:#fff;padding:14px 32px;border-radius:28px;
  font-size:16px;font-weight:600;transition:all .2s;
}
.btn-primary:hover{background:var(--red-light);transform:translateY(-2px);box-shadow:0 8px 24px rgba(230,0,18,0.3)}
.btn-secondary{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--gray-1);color:var(--black);padding:14px 32px;border-radius:28px;
  font-size:16px;font-weight:600;transition:all .2s;
}
.btn-secondary:hover{background:var(--gray-2)}
.tag{
  display:inline-block;padding:6px 16px;border-radius:20px;font-size:13px;font-weight:600;
  background:var(--red-bg);color:var(--red);border:1px solid rgba(230,0,18,0.15);
}

/* ===== 首页 Hero ===== */
.hero{
  min-height:calc(100vh - var(--nav-height));
  display:flex;align-items:center;justify-content:center;
  text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFF5F5 0%,#FFFFFF 100%);
}
.hero-shapes{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.shape{position:absolute;border-radius:50%;opacity:0.08;animation:float 6s ease-in-out infinite}
.shape.circle{width:200px;height:200px;background:var(--red);top:15%;left:10%}
.shape.triangle{width:0;height:0;border-left:80px solid transparent;border-right:80px solid transparent;border-bottom:140px solid var(--red);background:none;border-radius:0;bottom:15%;right:10%;animation-delay:1s}
.shape.square{width:120px;height:120px;background:var(--red);border-radius:20px;bottom:25%;left:20%;animation-delay:2s}
.shape.cross{width:100px;height:100px;background:var(--red);border-radius:30px;top:25%;right:20%;animation-delay:0.5s}
@keyframes float{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-20px) rotate(5deg)}}

.hero-content{position:relative;z-index:1;max-width:800px;padding:0 24px}
.hero-tag{margin-bottom:24px}
.hero h1{font-size:72px;font-weight:900;letter-spacing:-2px;line-height:1.1;margin-bottom:16px}
.hero h1 .red{color:var(--red)}
.hero-sub{font-size:24px;color:var(--gray-4);margin-bottom:12px;font-weight:500}
.hero-desc{font-size:18px;color:var(--gray-3);margin-bottom:40px;max-width:600px;margin-left:auto;margin-right:auto}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-stats{
  display:flex;gap:48px;justify-content:center;margin-top:64px;flex-wrap:wrap;
}
.stat-item{text-align:center}
.stat-num{font-size:36px;font-weight:800;color:var(--black)}
.stat-label{font-size:14px;color:var(--gray-3);margin-top:4px}

/* ===== 品牌主张全屏红 ===== */
.brand-claim{
  background:var(--red);color:#fff;text-align:center;padding:120px 24px;
  position:relative;overflow:hidden;
}
.brand-claim h2{font-size:56px;font-weight:900;letter-spacing:-1px;margin-bottom:16px;animation:pulse 3s ease-in-out infinite}
.brand-claim .en{font-size:24px;opacity:0.8;font-weight:300;letter-spacing:2px}
.brand-claim .values{margin-top:40px;font-size:16px;opacity:0.7;letter-spacing:4px}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.85}}

/* ===== 关于品牌 ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-text h2{font-size:36px;font-weight:800;margin-bottom:24px;letter-spacing:-0.5px}
.about-text p{font-size:17px;color:var(--gray-4);line-height:1.9;margin-bottom:16px}
.about-card{
  background:var(--gray-1);border-radius:var(--radius);padding:40px;
}
.about-card .card-label{color:var(--red);font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:1px}
.about-card h3{font-size:24px;font-weight:700;line-height:1.5}

/* ===== 产品矩阵 ===== */
.products{background:var(--gray-1)}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:24px}
.product-card{
  background:#fff;border-radius:var(--radius);overflow:hidden;
  transition:all .3s;cursor:pointer;border:1px solid rgba(0,0,0,0.04);
}
.product-card:hover{transform:translateY(-6px);box-shadow:0 20px 48px rgba(0,0,0,0.1)}
.product-img{
  height:240px;background:linear-gradient(135deg,#1a1a2e 0%,#16213e 100%);
  display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;
}
.product-img .glow{position:absolute;width:200px;height:200px;background:var(--red);border-radius:50%;filter:blur(60px);opacity:0.3}
.product-img .icon{font-size:64px;position:relative;z-index:1}
.product-info{padding:28px}
.product-info h3{font-size:22px;font-weight:700;margin-bottom:8px}
.product-info p{font-size:15px;color:var(--gray-4);line-height:1.7;margin-bottom:16px}
.product-link{color:var(--red);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:4px}
.product-link:hover{gap:8px}

.app-card{
  background:linear-gradient(135deg,#1A1A1A 0%,#2D2D2D 100%);
  border-radius:var(--radius);padding:48px;color:#fff;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.app-card h3{font-size:28px;font-weight:800;margin-bottom:8px}
.app-card .app-sub{font-size:18px;color:rgba(255,255,255,0.6);margin-bottom:16px}
.app-card p{font-size:15px;color:rgba(255,255,255,0.7);line-height:1.8;margin-bottom:24px;max-width:600px}
.app-btns{display:flex;gap:12px;flex-wrap:wrap}
.app-btn{
  background:rgba(255,255,255,0.1);color:#fff;padding:12px 24px;border-radius:24px;
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:8px;
  border:1px solid rgba(255,255,255,0.15);transition:all .2s;
}
.app-btn:hover{background:rgba(255,255,255,0.2)}
.app-icon{
  display:block;width:100px;height:100px;border-radius:24px;object-fit:cover;
}

/* ===== App功能网格 ===== */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{
  padding:36px;border-radius:var(--radius);background:var(--gray-1);
  transition:all .3s;
}
.feature-card:hover{background:var(--red-bg);transform:translateY(-4px)}
.feature-icon{
  width:56px;height:56px;border-radius:16px;background:var(--red);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;margin-bottom:20px;
}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:8px}
.feature-card .feature-en{font-size:13px;color:var(--gray-3);margin-bottom:12px;letter-spacing:1px}
.feature-card p{font-size:15px;color:var(--gray-4);line-height:1.8}

/* ===== 知识库入口 ===== */
.knowledge-entry{background:var(--gray-1)}
.knowledge-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.knowledge-card{
  background:#fff;border:2px solid var(--red);border-radius:var(--radius-sm);
  padding:32px;display:flex;flex-direction:column;transition:all .3s;cursor:pointer;
}
.knowledge-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(230,0,18,0.12)}
.knowledge-card .num{color:var(--red);font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:1px}
.knowledge-card h3{font-size:22px;font-weight:700;line-height:1.4;margin-bottom:24px;min-height:64px}
.knowledge-card .read-btn{
  color:var(--red);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:8px;
  margin-bottom:20px;
}
.knowledge-card .divider{height:1px;background:var(--gray-2);margin-bottom:20px}
.knowledge-card .desc{font-size:14px;color:var(--gray-4);line-height:1.8;flex:1}
.knowledge-more{text-align:center;margin-top:40px}
.knowledge-more a{color:var(--red);font-weight:600;font-size:16px}

/* ===== FAQ入口 ===== */
.faq-entry{background:var(--white)}
.faq-preview{max-width:800px;margin:0 auto}
.faq-item-preview{
  border-bottom:1px solid var(--gray-2);padding:20px 0;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;
}
.faq-item-preview h4{font-size:17px;font-weight:600}
.faq-item-preview .arrow{color:var(--red);font-size:20px;transition:transform .3s}
.faq-item-preview:hover .arrow{transform:translateX(4px)}

/* ===== 测评口碑 ===== */
.reviews{background:var(--gray-1)}
.reviews-scroll{
  display:flex;gap:20px;overflow-x:auto;padding:20px 0;scroll-behavior:smooth;
  -ms-overflow-style:none;scrollbar-width:none;
}
.reviews-scroll::-webkit-scrollbar{display:none}
.review-card{
  min-width:320px;max-width:320px;background:#fff;border-radius:var(--radius);
  padding:28px;flex-shrink:0;transition:all .3s;
}
.review-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,0.08)}
.review-stars{color:var(--red);font-size:16px;margin-bottom:12px;letter-spacing:2px}
.review-text{font-size:15px;color:var(--gray-4);line-height:1.8;margin-bottom:20px;min-height:100px}
.review-user{display:flex;align-items:center;gap:12px}
.review-avatar{
  width:40px;height:40px;border-radius:50%;background:var(--red-bg);
  display:flex;align-items:center;justify-content:center;color:var(--red);font-weight:700;font-size:16px;
}
.review-info .name{font-size:14px;font-weight:600}
.review-info .meta{font-size:12px;color:var(--gray-3)}
.review-source{font-size:12px;color:var(--gray-3);margin-bottom:12px}
.review-photo{display:block;width:100%;padding:0;border:0;cursor:zoom-in;margin-bottom:20px;border-radius:12px;overflow:hidden;background:var(--gray-1)}
.review-lightbox-open{overflow:hidden}
.review-lightbox{position:fixed;inset:0;width:100%;height:100%;max-width:none;max-height:none;margin:0;padding:64px 24px 24px;border:0;background:transparent;color:#fff}
.review-lightbox[open]{display:grid;place-items:center}
.review-lightbox::backdrop{background:rgba(0,0,0,.84)}
.review-lightbox figure{margin:0;max-width:100%;text-align:center}
.review-lightbox img{display:block;max-width:100%;max-height:calc(100vh - 132px);max-height:calc(100dvh - 132px);width:auto;height:auto;margin:auto;object-fit:contain;border-radius:8px}
.review-lightbox figcaption{margin-top:12px;font-size:14px}
.review-lightbox-close{position:absolute;top:16px;right:20px;width:44px;height:44px;border:1px solid rgba(255,255,255,.4);border-radius:50%;background:#252525;color:#fff;font-size:30px;line-height:1;cursor:pointer}
.review-photo img{display:block;width:100%;height:220px;object-fit:contain}
.review-card{display:flex;flex-direction:column}
.review-card .review-photo{margin-top:auto}
.review-item .review-photo{max-width:320px}
.reviews-nav{display:flex;justify-content:center;gap:12px;margin-top:24px}
.reviews-nav button{
  width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--gray-2);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--gray-4);
  transition:all .2s;
}
.reviews-nav button:hover{background:var(--red);color:#fff;border-color:var(--red)}

/* ===== 品牌愿景 ===== */
.vision{
  background:linear-gradient(135deg,#1A1A1A 0%,#2D2D2D 100%);
  color:#fff;text-align:center;padding:120px 24px;
}
.vision h2{font-size:42px;font-weight:800;margin-bottom:16px;letter-spacing:-0.5px}
.vision .sub{font-size:20px;color:rgba(255,255,255,0.7);margin-bottom:24px;max-width:700px;margin-left:auto;margin-right:auto;line-height:1.7}
.vision .en{font-size:16px;color:rgba(255,255,255,0.4);letter-spacing:1px;line-height:1.8}

/* ===== 页脚 ===== */
.footer{background:var(--black);color:rgba(255,255,255,0.6);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-brand h3{color:#fff;font-size:24px;font-weight:800;margin-bottom:8px}
.footer-brand .slogan{font-size:14px;margin-bottom:16px}
.footer-brand .values{font-size:12px;letter-spacing:2px;opacity:0.5}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;transition:color .2s}
.footer-col a:hover{color:var(--red)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:13px;
}
.footer-bottom .warning{color:var(--red);font-weight:600}

/* ===== 产品列表页 ===== */
.page-header{
  background:linear-gradient(180deg,var(--red-bg) 0%,#fff 100%);
  padding:80px 0 60px;text-align:center;
}
.page-header h1{font-size:48px;font-weight:900;letter-spacing:-1px;margin-bottom:12px}
.page-header p{font-size:18px;color:var(--gray-3)}
.product-list{padding:60px 0}
.product-detail-hero{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:60px 0;
}
.product-detail-img{
  height:480px;border-radius:var(--radius);
  background:linear-gradient(135deg,#1a1a2e 0%,#16213e 100%);
  display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;
}
.product-detail-img .glow{position:absolute;width:300px;height:300px;background:var(--red);border-radius:50%;filter:blur(80px);opacity:0.25}
.product-detail-img .icon{font-size:120px;position:relative;z-index:1}
.product-detail-info h1{font-size:40px;font-weight:800;margin-bottom:8px}
.product-detail-info .slogan{font-size:20px;color:var(--red);font-weight:600;margin-bottom:24px}
.product-detail-info .desc{font-size:17px;color:var(--gray-4);line-height:1.9;margin-bottom:32px}
.product-detail-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:32px}
.product-specs{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.spec-item{background:var(--gray-1);border-radius:var(--radius-sm);padding:16px}
.spec-item .label{font-size:13px;color:var(--gray-3);margin-bottom:4px}
.spec-item .value{font-size:15px;font-weight:600}

/* ===== 知识库列表页 ===== */
.knowledge-filters{display:flex;gap:8px;justify-content:center;margin-bottom:40px;flex-wrap:wrap}
.filter-btn{
  padding:8px 20px;border-radius:20px;font-size:14px;font-weight:500;
  background:var(--gray-1);color:var(--gray-4);transition:all .2s;
}
.filter-btn:hover{background:var(--gray-2)}
.filter-btn.active{background:var(--red);color:#fff}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.article-card{
  background:#fff;border-radius:var(--radius);overflow:hidden;cursor:pointer;
  border:1px solid var(--gray-2);transition:all .3s;
}
.article-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,0.08)}
.article-cover{
  height:160px;background:linear-gradient(135deg,var(--red-bg) 0%,#FFE8E8 100%);
  display:flex;align-items:center;justify-content:center;position:relative;
}
.article-cover .shape-icon{font-size:48px;opacity:0.5}
.article-cover .cat-tag{
  position:absolute;top:12px;left:12px;background:rgba(255,255,255,0.9);
  color:var(--red);padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600;
}
.article-body{padding:24px}
.article-body h3{font-size:18px;font-weight:700;margin-bottom:8px;line-height:1.4}
.article-body p{font-size:14px;color:var(--gray-4);line-height:1.7;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-meta{display:flex;justify-content:space-between;font-size:13px;color:var(--gray-3)}

/* 文章详情页 */
.article-detail{max-width:800px;margin:0 auto;padding:60px 24px}
.article-detail .back{color:var(--red);font-size:15px;font-weight:600;margin-bottom:24px;display:inline-block;cursor:pointer}
.article-detail h1{font-size:36px;font-weight:800;margin-bottom:16px;line-height:1.3}
.article-detail .meta{font-size:14px;color:var(--gray-3);margin-bottom:40px;padding-bottom:24px;border-bottom:1px solid var(--gray-2)}
.article-detail .content p{font-size:17px;line-height:2;margin-bottom:24px;color:var(--gray-4)}
.article-detail .content h2{font-size:24px;font-weight:700;margin:40px 0 16px}
.article-detail .content ul{margin:16px 0 24px 24px}
.article-detail .content li{font-size:17px;line-height:2;color:var(--gray-4);margin-bottom:8px}

/* ===== 测评页 ===== */
.review-filters{display:flex;gap:8px;justify-content:center;margin-bottom:40px;flex-wrap:wrap}
.review-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:1000px;margin:0 auto}
.review-item{
  background:#fff;border:1px solid var(--gray-2);border-radius:var(--radius);padding:32px;
  transition:all .3s;
}
.review-item:hover{box-shadow:0 8px 24px rgba(0,0,0,0.06)}
.review-item-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:16px}
.review-item-header .stars{color:var(--red);font-size:18px;letter-spacing:2px}
.review-item-header .product-tag{background:var(--red-bg);color:var(--red);padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600}
.review-item h3{font-size:18px;font-weight:700;margin-bottom:12px}
.review-item p{font-size:15px;color:var(--gray-4);line-height:1.8;margin-bottom:20px}
.review-item-footer{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--gray-2)}

/* ===== FAQ页 ===== */
.faq-page{max-width:900px;margin:0 auto;padding:60px 24px}
.faq-search{
  max-width:600px;margin:0 auto 40px;position:relative;
}
.faq-search input{
  width:100%;padding:16px 24px 16px 48px;border-radius:28px;border:2px solid var(--gray-2);
  font-size:16px;font-family:inherit;transition:all .2s;outline:none;
}
.faq-search input:focus{border-color:var(--red)}
.faq-search .search-icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--gray-3);font-size:18px}
.faq-cats{display:flex;gap:8px;justify-content:center;margin-bottom:40px;flex-wrap:wrap}
.faq-accordion{border-top:1px solid var(--gray-2)}
.faq-accordion-item{border-bottom:1px solid var(--gray-2)}
.faq-accordion-q{
  padding:24px 0;display:flex;justify-content:space-between;align-items:center;cursor:pointer;
  font-size:17px;font-weight:600;transition:color .2s;
}
.faq-accordion-q:hover{color:var(--red)}
.faq-accordion-q .plus{
  width:28px;height:28px;border-radius:50%;background:var(--gray-1);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--gray-4);
  transition:all .3s;flex-shrink:0;margin-left:16px;
}
.faq-accordion-item.open .faq-accordion-q .plus{background:var(--red);color:#fff;transform:rotate(45deg)}
.faq-accordion-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;
  font-size:16px;color:var(--gray-4);line-height:1.9;
}
.faq-accordion-item.open .faq-accordion-a{max-height:500px;padding-bottom:24px}

/* ===== 关于我们页 ===== */
.about-hero{text-align:center;padding:80px 0 60px}
.about-hero h1{font-size:48px;font-weight:900;margin-bottom:16px}
.about-hero p{font-size:18px;color:var(--gray-3);max-width:700px;margin:0 auto;line-height:1.8}
.about-story{padding:60px 0}
.about-story-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-story-text h2{font-size:32px;font-weight:800;margin-bottom:24px}
.about-story-text p{font-size:17px;color:var(--gray-4);line-height:2;margin-bottom:16px}
.about-values{background:var(--gray-1);padding:80px 0}
.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value-card{text-align:center;padding:32px}
.value-icon{
  width:64px;height:64px;border-radius:20px;background:var(--red);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:800;
  margin:0 auto 20px;
}
.value-card h3{font-size:22px;font-weight:700;margin-bottom:8px}
.value-card .en{font-size:13px;color:var(--gray-3);letter-spacing:1px;margin-bottom:12px}
.value-card p{font-size:15px;color:var(--gray-4);line-height:1.8}
.contact-section{padding:80px 0;background:#FAFAFA}
.contact-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;align-items:stretch;margin:0 auto}
.contact-card{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-width:0;min-height:260px;text-align:center;padding:32px 20px;
  border:1px solid var(--gray-2);border-radius:20px;background:var(--white);
  box-shadow:0 1px 3px rgba(0,0,0,0.05);overflow-wrap:anywhere;
}
.contact-icon{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:64px;height:64px;margin-bottom:24px;border-radius:50%;background:#FFF1F4;color:var(--red)}
.contact-icon svg{display:block;width:30px;height:30px}
.contact-label{font-size:16px;line-height:1.5;font-weight:400;color:var(--gray-4);margin-bottom:22px}
.contact-value{font-size:clamp(18px,1.85vw,22px);line-height:1.4;font-weight:600;color:var(--black);text-underline-offset:4px}
.contact-qr-frame{width:140px;max-width:100%;padding:10px;border:1px solid var(--gray-2);border-radius:12px;background:var(--white);box-shadow:0 1px 3px rgba(0,0,0,0.05)}
.contact-qr{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:contain}
.contact-qr-caption{font-size:16px;line-height:1.5;font-weight:600;color:var(--black);margin-top:24px}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .hero h1{font-size:56px}
  .section-title{font-size:36px}
  .about-grid,.product-detail-hero,.about-story-grid{grid-template-columns:1fr;gap:40px}
  .features-grid,.knowledge-cards,.product-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
  .values-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .review-list{grid-template-columns:1fr}
}
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:var(--nav-height);left:0;right:0;background:#fff;flex-direction:column;padding:16px;gap:4px;border-bottom:1px solid var(--gray-2);box-shadow:0 8px 24px rgba(0,0,0,0.08)}
  .nav-links.open{display:flex}
  .nav-link{padding:12px 16px;width:100%}
  .menu-toggle{display:flex}
  .hero h1{font-size:40px}
  .hero-sub{font-size:18px}
  .hero-desc{font-size:16px}
  .hero-stats{gap:24px}
  .stat-num{font-size:28px}
  .section{padding:60px 0}
  .section-title{font-size:28px}
  .section-sub{font-size:16px}
  .brand-claim h2{font-size:36px;padding:0 16px}
  .brand-claim .en{font-size:18px}
  .features-grid,.knowledge-cards,.product-grid,.article-grid,.values-grid,.contact-grid{grid-template-columns:1fr}
  .app-card{grid-template-columns:1fr;text-align:center}
  .app-icon{margin:0 auto}
  .app-btns{justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .page-header h1{font-size:36px}
  .article-detail h1{font-size:28px}
  .about-hero h1{font-size:36px}
  .vision h2{font-size:32px}
  .product-specs{grid-template-columns:1fr}
}

/* Production navigation, accessible interactions, and narrow-screen refinements. */
[hidden]{display:none!important}
button,input{font:inherit}
a,button{-webkit-tap-highlight-color:transparent}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,[tabindex="0"]:focus-visible{
  outline:3px solid var(--red);outline-offset:4px;
}
.page:focus{outline:none}
.seo-highlights{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;list-style:none;margin:24px auto;padding:0}
.seo-highlights li{padding:10px 18px;border-radius:999px;background:#fff;color:var(--gray-4);border:1px solid var(--gray-2)}
.catalog-series[id],.faq-accordion[id]{scroll-margin-top:calc(var(--nav-height) + 20px)}
.nav-logo{flex-shrink:0;white-space:nowrap}
.nav-links{min-width:0}
.nav-link,.nav-cta{white-space:nowrap}
.nav-mobile-download{display:none}
.menu-toggle{flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;border-radius:8px}
.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-6px) rotate(-45deg)}
.hero{padding-top:48px;padding-bottom:48px}
.hero-stats{row-gap:24px}
.product-card,.article-card{display:block}
.product-info,.article-body,.about-text,.product-detail-info,.app-card>div{min-width:0}
.app-card h3 a:hover{text-decoration:underline;text-underline-offset:6px}
.faq-item-preview{gap:16px}
.faq-item-preview .arrow{flex-shrink:0}
.reviews-scroll{overscroll-behavior-x:contain;scroll-snap-type:x proximity}
.review-card{min-width:min(320px,calc(100vw - 48px));scroll-snap-align:start}
.footer-support{display:flex;gap:20px;flex-wrap:wrap;justify-content:center}
.footer-support a:hover{color:var(--white)}
.surface-muted{background:var(--gray-1)}
.detail-tag{margin-bottom:16px}
.product-detail-hero.container{padding:60px 24px}
.section-action{text-align:center;margin-top:32px}
.spec-table{max-width:800px;margin:0 auto;padding:32px;background:var(--gray-1);border-radius:var(--radius);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px}
.spec-table .spec-item{padding:16px 20px;border-radius:0;border-bottom:1px solid var(--gray-2)}
.filtered-section{padding-top:0}
.support-callout{text-align:center;margin-top:48px;padding:32px;background:var(--gray-1);border-radius:var(--radius)}
.support-callout h3,.article-cta h3{font-size:20px;font-weight:700;margin-bottom:8px}
.support-callout p{color:var(--gray-4);margin-bottom:16px}
.faq-search .search-icon{font-size:30px;line-height:1;pointer-events:none}
.faq-search input{min-width:0;color:var(--black);background:var(--white)}
.faq-count{text-align:center;color:var(--gray-4);margin-bottom:24px}
.faq-marker{color:var(--red);font-weight:700;margin-right:8px}
.faq-accordion-q{list-style:none;text-align:left}
.faq-accordion-q::-webkit-details-marker{display:none}
.faq-accordion-item[open] .faq-accordion-a{max-height:none;padding-bottom:24px}
.faq-accordion-item[open] .plus{background:var(--red);color:var(--white);transform:rotate(45deg)}
.empty-state{text-align:center;color:var(--gray-4);padding:40px 0}
.empty-state p{margin-bottom:24px}
.article-detail .content h3{font-size:20px;line-height:1.5;margin:28px 0 12px}
.article-detail .content a,.article-related a{color:var(--red);text-underline-offset:4px}
.article-detail .content a:hover,.article-related a:hover,.contact-card a:hover{text-decoration:underline}
.article-related{margin-top:40px}
.article-related h2{font-size:24px;margin-bottom:16px}
.article-related ul{padding-left:24px}
.article-related li{margin-bottom:12px}
.article-cta{margin-top:48px;padding:32px;background:var(--red-bg);border-radius:var(--radius);text-align:center}
.article-cta p{color:var(--gray-4);margin-bottom:20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.noscript-notice{text-align:center;padding:24px;background:var(--red-bg)}
.noscript-notice a{color:var(--red);text-decoration:underline}

@media(max-width:1050px){
  .nav-inner{gap:12px}
  .nav-links{display:none;position:absolute;top:var(--nav-height);left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:16px 24px;gap:4px;border-bottom:1px solid var(--gray-2);box-shadow:0 8px 24px rgba(0,0,0,0.08);max-height:calc(100dvh - var(--nav-height));overflow-y:auto}
  .nav-links.open{display:flex}
  .nav-link{padding:12px 16px;width:100%}
  .nav-links .nav-cta{display:block;margin:8px 0 0;text-align:center;padding:12px 20px}
  .nav-mobile-download{display:inline-flex;margin-left:auto;font-size:13px;padding:8px 16px}
  .menu-toggle{display:flex}
}
@media(max-width:768px){
  .hero h1{font-size:clamp(34px,8.8vw,48px);letter-spacing:-1px}
  .hero-content{width:100%}
  .hero-stats{column-gap:20px;margin-top:48px}
  .stat-label{font-size:12px}
  .brand-claim{padding:80px 24px}
  .brand-claim h2{font-size:clamp(28px,7.5vw,36px);padding:0}
  .brand-claim .values{letter-spacing:2px}
  .about-card,.feature-card{padding:28px}
  .about-text h2{font-size:30px}
  .app-card{padding:32px 24px;gap:24px}
  .app-btns{gap:10px}
  .app-btn{padding:12px 20px}
  .app-icon{grid-row:1}
  .product-detail-hero.container{padding:36px 24px}
  .product-detail-img{height:320px}
  .product-detail-info h1{font-size:32px}
  .product-detail-btns{gap:12px}
  .spec-table{padding:16px;grid-template-columns:1fr}
  .review-item{padding:24px}
  .review-item-header{gap:12px;flex-wrap:wrap}
  .review-item-header .product-tag{max-width:100%}
  .review-text{min-height:0}
  .vision{padding:80px 24px}
  .vision h2{font-size:28px}
  .vision .sub{font-size:18px}
  .faq-search{margin-bottom:28px}
  .faq-cats{gap:8px}
  .filter-btn{padding:8px 16px}
  .faq-accordion-q{font-size:16px;line-height:1.7}
  .faq-accordion-a{font-size:15px}
  .support-callout,.article-cta{padding:28px 20px}
  .about-story-grid{gap:28px}
  .about-story-grid>div:last-child{height:280px!important}
  .contact-card{padding:32px 24px}
  .footer{padding:48px 0 28px}
}
@media(max-width:400px){
  .nav-inner{padding:0 16px;gap:8px}
  .nav-logo{font-size:17px;gap:5px}
  .nav-logo .heart{font-size:21px}
  .nav-mobile-download{padding:8px 12px;font-size:12px}
  .menu-toggle{width:32px}
  .hero-stats{column-gap:16px}
  .stat-num{font-size:26px}
  .stat-label{font-size:11px}
  .hero-btns{gap:12px}
  .hero-btns a{padding:12px 24px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* Official brand assets and the model-by-model product catalog. */
/* Trimmed only the transparent outer margin of the supplied logo. */
.nav-logo{width:240px;height:48px;overflow:hidden}
.nav-logo img{display:block;width:100%;height:100%;object-fit:contain}
.product-img.series-image{height:auto;aspect-ratio:1;background:#15151b;overflow:hidden}
.series-image img{display:block;width:100%;height:100%;object-fit:contain;transition:transform .35s ease}
.product-card:hover .series-image img{transform:scale(1.025)}
.reviews-more{margin-top:20px}
.reviews-more a{display:inline-flex;align-items:center;min-height:44px}
.catalog{padding-top:8px;padding-bottom:80px}
.catalog-tabs{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-bottom:56px}
.catalog-tabs a{display:inline-flex;align-items:center;gap:8px}
.catalog-tabs a span{font-size:12px;opacity:.7}
.catalog-series{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--gray-2)}
.catalog-series-intro{margin-bottom:28px}
.catalog-series-intro h2{font-size:34px;line-height:1.3;margin-bottom:14px}
.catalog-series-intro p{max-width:580px;color:var(--gray-4);line-height:1.8}
.model-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.model-card{display:flex;flex-direction:column;min-width:0;overflow:hidden;background:var(--gray-1);border:1px solid transparent;border-radius:var(--radius);transition:transform .2s,border-color .2s,box-shadow .2s}
.model-image{aspect-ratio:1;overflow:hidden;background:#fff;flex-shrink:0}
.model-image img{display:block;width:100%;height:100%;object-fit:contain}
.model-body{display:flex;flex-direction:column;flex:1;min-width:0;padding:30px}
.model-card:hover{transform:translateY(-4px);border-color:#f5b8bf;box-shadow:0 14px 32px rgba(0,0,0,.05)}
.surface-muted .model-card{background:var(--white)}
.model-series{font-size:12px;color:var(--gray-4);margin-bottom:10px}
.model-card h3{font-size:25px;line-height:1.4;margin-bottom:8px}
.model-body>p{font-size:14px;color:var(--gray-4);margin-bottom:24px}
.model-card .product-link{margin-top:auto;justify-content:space-between}
.product-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-top:32px;color:var(--gray-4);font-size:13px}
.product-breadcrumb a:hover{color:var(--red)}
.product-breadcrumb+.product-detail-hero{padding-top:32px;align-items:start}
.product-model-figure{min-width:0;margin:0}
.product-model-figure img{display:block;width:100%;height:auto;border-radius:var(--radius)}
.product-introduction{padding-top:32px}
.product-story{max-width:800px;margin:0 auto;display:grid;gap:20px}
.product-story-image{display:block;min-width:0;border-radius:var(--radius-sm);overflow:hidden}
.product-story-image img{display:block;width:100%;height:auto}
.app-capabilities{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;max-width:960px;margin:0 auto}
.capability{padding:24px;background:var(--white);border-radius:var(--radius-sm)}
.capability dt{font-size:14px;color:var(--gray-4);margin-bottom:10px}
.capability dd{font-size:19px;font-weight:600;color:var(--red)}
.capability.unavailable dd{color:var(--gray-4);font-weight:400;font-size:16px}
.spec-item .value{white-space:pre-line;overflow-wrap:anywhere}
.series-links{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}
.company-address{color:var(--gray-3);font-size:14px;margin-top:8px}
@media(max-width:1024px){
  .model-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .app-capabilities{grid-template-columns:repeat(2,minmax(0,1fr))}
  .product-model-figure{width:100%;max-width:540px;justify-self:center}
}
@media(max-width:768px){
  .nav-logo{width:150px;height:42px}
  .catalog{padding-bottom:60px}
  .catalog-tabs{gap:8px;margin-bottom:36px}
  .catalog-tabs .filter-btn{font-size:14px;padding:9px 14px}
  .catalog-series-intro h2{font-size:28px}
  .model-grid{grid-template-columns:1fr;gap:16px}
  .model-body{padding:24px}
  .product-story{gap:12px}
  .catalog-series{padding-bottom:36px;margin-bottom:36px}
  .capability{padding:20px 16px}
  .product-breadcrumb{padding-top:24px;font-size:12px}
}
@media(max-width:400px){
  .nav-logo{width:130px;height:40px}
}