*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#2d3436;line-height:1.7;background:#f8fafb;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block;border-radius:12px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
:root{--primary:#0ea5e9;--primary-dark:#0284c7;--accent:#06b6d4;--success:#10b981;--dark:#0f172a;--gray:#64748b;--light:#f1f5f9;--white:#fff;--radius:16px;--shadow:0 4px 24px rgba(0,0,0,.06);--shadow-lg:0 12px 48px rgba(0,0,0,.08)}
.topbar{background:var(--dark);color:#94a3b8;font-size:.8rem;padding:6px 0}
.topbar .container{display:flex;justify-content:space-between;align-items:center}
.header{background:rgba(255,255,255,.92);border-bottom:1px solid #e2e8f0;position:sticky;top:0;z-index:100;backdrop-filter:blur(12px)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.5rem;font-weight:800;color:var(--dark)}
.logo-icon{width:42px;height:42px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;font-weight:700}
.nav{display:flex;gap:4px;list-style:none}
.nav a{display:block;padding:8px 20px;border-radius:10px;font-size:.9rem;font-weight:500;color:var(--gray);transition:all .25s}
.nav a:hover,.nav a.active{color:var(--primary);background:#e0f2fe}
.nav .dropdown{position:relative}
.nav .dropdown:hover .subnav{display:flex}
.subnav{display:none;position:absolute;top:100%;left:0;background:var(--white);border-radius:12px;box-shadow:var(--shadow-lg);padding:8px;flex-direction:column;min-width:150px;z-index:10}
.subnav a{padding:8px 16px;border-radius:8px;white-space:nowrap}
.page-hero{padding:60px 0 40px;text-align:center;background:linear-gradient(160deg,#f0f9ff,#e0f2fe,#f8fafb)}
.page-hero h1{font-size:2.4rem;font-weight:800;color:var(--dark);margin-bottom:12px}
.page-hero h1 span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.page-hero p{color:var(--gray);font-size:1rem;max-width:600px;margin:0 auto}
.breadcrumb{padding:16px 0;font-size:.82rem;color:var(--gray)}
.breadcrumb a{color:var(--primary);transition:color .2s}
.breadcrumb a:hover{color:var(--primary-dark)}
.breadcrumb span{color:#94a3b8}
.section-label{display:inline-block;background:rgba(14,165,233,.08);color:var(--primary);padding:4px 14px;border-radius:100px;font-size:.78rem;font-weight:600;margin-bottom:12px;letter-spacing:.04em}
.section-header h2{font-size:2rem;font-weight:800;color:var(--dark);margin-bottom:12px}
.section-header p{color:var(--gray);max-width:560px;margin:0 auto;font-size:.95rem}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px;padding:40px 0}
.product-card{background:var(--white);border-radius:var(--radius);padding:32px 24px;text-align:center;box-shadow:var(--shadow);transition:all .35s;border:1px solid transparent}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#e0f2fe}
.product-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;border-radius:4px 4px 0 0}
.product-icon{width:72px;height:72px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto 20px}
.product-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.product-card p{font-size:.82rem;color:var(--gray);margin-bottom:16px;line-height:1.6}
.product-card .price{font-size:1.2rem;font-weight:800;color:var(--primary-dark);margin-bottom:8px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:12px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .3s;border:none}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 8px 24px rgba(14,165,233,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(14,165,233,.35)}
.btn-outline{background:var(--white);color:var(--primary);border:2px solid #e0f2fe}
.btn-outline:hover{border-color:var(--primary);background:#f0f9ff}
.article-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px;padding:40px 0}
.article-card{background:var(--light);border-radius:var(--radius);overflow:hidden;transition:all .35s}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.article-img{height:180px;background:linear-gradient(135deg,#e0f2fe,#bae6fd);display:flex;align-items:center;justify-content:center;font-size:3rem}
.article-body{padding:20px 24px 24px}
.article-tag{display:inline-block;background:rgba(14,165,233,.1);color:var(--primary);padding:2px 10px;border-radius:6px;font-size:.7rem;font-weight:600;margin-bottom:10px}
.article-body h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.article-body p{font-size:.8rem;color:var(--gray)}
.article-meta{display:flex;align-items:center;gap:16px;margin-top:12px;font-size:.72rem;color:#94a3b8}
.about-section{padding:60px 0}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-content h2{font-size:2rem;font-weight:800;color:var(--dark);margin-bottom:20px}
.about-content p{font-size:.95rem;color:var(--gray);margin-bottom:16px;line-height:1.8}
.about-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.about-badge{display:flex;align-items:center;gap:6px;padding:8px 16px;background:var(--light);border-radius:10px;font-size:.8rem;font-weight:600}
.qual-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;padding:40px 0}
.qual-card{background:var(--white);border-radius:var(--radius);padding:32px 24px;text-align:center;box-shadow:var(--shadow);transition:.35s}
.qual-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.qual-icon{font-size:3rem;margin-bottom:16px}
.qual-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.qual-card p{font-size:.82rem;color:var(--gray)}
.content-section{padding:40px 0}
.content-card{background:var(--white);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);margin-bottom:24px}
.content-card h3{font-size:1.2rem;font-weight:700;margin-bottom:12px;color:var(--dark)}
.content-card p{color:var(--gray);font-size:.9rem;line-height:1.8}
.feature-list{list-style:none;padding:20px 0}
.feature-list li{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px solid var(--light)}
.feature-list li:last-child{border:none}
.feature-list .icon{font-size:1.2rem;flex-shrink:0;margin-top:2px}
.feature-list strong{display:block;font-size:.95rem;margin-bottom:4px}
.feature-list span{font-size:.82rem;color:var(--gray)}
.footer{background:var(--dark);color:#94a3b8;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{color:var(--white);margin-bottom:12px;font-size:1.3rem}
.footer-brand p{font-size:.82rem;line-height:1.7}
@media(max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.page-hero h1{font-size:1.6rem}.about-grid,.footer-grid{grid-template-columns:1fr}.product-grid,.article-grid,.qual-grid{grid-template-columns:1fr}.page-hero{padding:40px 0 24px}}

/* ===== HERO ===== */
.hero{background:linear-gradient(160deg,#f0f9ff 0%,#e0f2fe 40%,#f8fafb 100%);padding:80px 0 60px;position:relative;overflow:hidden}
.hero::after{content:'';position:absolute;top:-120px;right:-80px;width:400px;height:400px;background:radial-gradient(circle,rgba(14,165,233,.08) 0%,transparent 70%);border-radius:50%}
.hero .container{display:grid;grid-template-columns:1fr 380px;gap:40px;align-items:center;position:relative;z-index:1}
.hero-badge{display:inline-block;background:rgba(14,165,233,.1);color:var(--primary-dark);padding:6px 16px;border-radius:100px;font-size:.8rem;font-weight:600;margin-bottom:20px}
.hero h1{font-size:3rem;font-weight:800;line-height:1.2;color:var(--dark);margin-bottom:16px;letter-spacing:-.02em}
.hero h1 span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1rem;color:var(--gray);margin-bottom:24px;max-width:460px;line-height:1.7}
.hero-stats{display:flex;gap:24px;margin-bottom:28px}
.hero-stat{text-align:center;min-width:80px}
.hero-stat .num{font-size:1.8rem;font-weight:800;color:var(--primary);line-height:1.1}
.hero-stat .label{font-size:.7rem;color:var(--gray);margin-top:2px;text-transform:uppercase;letter-spacing:.03em}
.hero-visual{position:relative}
.hero-card{background:var(--white);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-lg)}
.hero-card .pill-icon{width:56px;height:56px;background:linear-gradient(135deg,#e0f2fe,#bae6fd);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:14px}
.hero-card h3{font-size:1.1rem;margin-bottom:6px}
.hero-card p{font-size:.8rem;color:var(--gray);margin-bottom:0}
.hero-features{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.hero-feature{display:flex;align-items:center;gap:6px;font-size:.75rem;color:var(--gray)}
.hero-feature .check{width:18px;height:18px;background:#d1fae5;border-radius:5px;display:flex;align-items:center;justify-content:center;color:var(--success);font-size:.6rem;flex-shrink:0}
.btn-outline{background:var(--white);color:var(--primary);border:2px solid #e0f2fe}
.btn-outline:hover{border-color:var(--primary);background:#f0f9ff}

/* ===== ARTICLES ===== */
.articles{background:var(--white);padding:80px 0}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.article-card{background:var(--light);border-radius:var(--radius);overflow:hidden;transition:all .35s}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.article-img{height:160px;background:linear-gradient(135deg,#e0f2fe,#bae6fd);display:flex;align-items:center;justify-content:center;font-size:2.5rem}
.article-body{padding:18px 20px 22px}
.article-tag{display:inline-block;background:rgba(14,165,233,.1);color:var(--primary);padding:2px 10px;border-radius:6px;font-size:.68rem;font-weight:600;margin-bottom:8px}
.article-body h3{font-size:.95rem;font-weight:700;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-body p{font-size:.78rem;color:var(--gray);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-meta{display:flex;align-items:center;gap:14px;margin-top:10px;font-size:.7rem;color:#94a3b8}
.article-card:nth-child(2) .article-img{background:linear-gradient(135deg,#fce7f3,#fbcfe8)}
.article-card:nth-child(3) .article-img{background:linear-gradient(135deg,#d1fae5,#a7f3d0)}

/* ===== ABOUT ===== */
.about{padding:80px 0;background:linear-gradient(180deg,#f8fafb 0%,var(--white) 100%)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-img-placeholder{width:100%;height:320px;background:linear-gradient(135deg,#e0f2fe,#bae6fd,#cffafe);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:4rem;box-shadow:var(--shadow-lg)}
.about-content h2{font-size:2rem;font-weight:800;color:var(--dark);margin-bottom:16px}
.about-content p{font-size:.9rem;color:var(--gray);margin-bottom:14px;line-height:1.7}
.about-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.about-badge{display:flex;align-items:center;gap:6px;padding:8px 16px;background:var(--light);border-radius:10px;font-size:.78rem;font-weight:600;color:var(--dark)}

/* ===== PRODUCTS ===== */
.products{padding:80px 0}
.product-card{position:relative}
.product-card:nth-child(1)::before{background:linear-gradient(90deg,var(--primary),var(--accent))}
.product-card:nth-child(2)::before{background:linear-gradient(90deg,#ec4899,#f472b6)}
.product-card:nth-child(3)::before{background:linear-gradient(90deg,#f59e0b,#fbbf24)}
.product-card:nth-child(4)::before{background:linear-gradient(90deg,#10b981,#34d399)}
.product-card:nth-child(1) .product-icon{background:#e0f2fe}
.product-card:nth-child(2) .product-icon{background:#fce7f3}
.product-card:nth-child(3) .product-icon{background:#fef3c7}
.product-card:nth-child(4) .product-icon{background:#d1fae5}
.product-link{display:inline-flex;align-items:center;gap:4px;font-size:.82rem;font-weight:600;color:var(--primary);transition:gap .25s}
.product-link:hover{gap:8px}

/* ===== FOOTER ===== */
/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .hero .container{grid-template-columns:1fr}
  .hero-visual{max-width:380px;margin:0 auto}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .article-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .hero{padding:50px 0 40px}
  .hero h1{font-size:2rem}
  .hero .container{text-align:center}
  .hero p{margin:0 auto 24px}
  .hero-stats{justify-content:center}
  .hero-visual{display:none}
  .product-grid,.article-grid{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section-header h2{font-size:1.5rem}
}

/* ===== CONTENT PAGES ===== */
.content-section{padding:40px 0}
.content-card{background:var(--white);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);margin-bottom:20px;transition:all .3s}
.content-card:hover{box-shadow:var(--shadow-lg)}
.content-card h3{font-size:1.15rem;font-weight:700;margin-bottom:10px;color:var(--dark)}
.content-card p{font-size:.88rem;color:var(--gray);line-height:1.7}
.feature-list{list-style:none;padding:16px 0 0}
.feature-list li{display:flex;align-items:flex-start;gap:10px;padding:10px 0;border-bottom:1px solid var(--light)}
.feature-list li:last-child{border:none}
.feature-list .icon{font-size:1rem;flex-shrink:0;color:var(--success)}
.feature-list strong{display:block;font-size:.9rem;margin-bottom:2px;color:var(--dark)}
.feature-list span{font-size:.78rem;color:var(--gray)}
.qual-grid .container{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px;padding:40px 0}
.product-icon{width:72px;height:72px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto 20px;overflow:hidden;background:#e0f2fe}
.product-icon img{width:100%;height:100%;object-fit:cover;border-radius:20px}
.product-card:nth-child(2) .product-icon{background:#fce7f3}
.product-card:nth-child(3) .product-icon{background:#fef3c7}
.product-card:nth-child(4) .product-icon{background:#d1fae5}
.content-card img{max-width:100%;height:auto;border-radius:8px;margin:12px 0}
.content-card p{font-size:.9rem;color:var(--gray);line-height:1.9;margin-bottom:16px}
.content-card h1,.content-card h2,.content-card h3,.content-card h4{color:var(--dark);margin:24px 0 12px;font-weight:700}
.content-card h2{font-size:1.4rem}.content-card h3{font-size:1.15rem}
.content-card blockquote{border-left:3px solid var(--primary);padding:10px 16px;margin:16px 0;color:var(--gray);background:var(--light);border-radius:0 8px 8px 0}
.content-card ul,.content-card ol{padding-left:24px;margin:12px 0}
.content-card li{margin-bottom:6px;font-size:.9rem;color:var(--gray)}
.content-card table{width:100%;border-collapse:collapse;margin:16px 0}
.content-card td,.content-card th{border:1px solid #e2e8f0;padding:8px 12px;font-size:.85rem}
.content-card strong{color:var(--dark)}
.content-card a{color:var(--primary);text-decoration:underline}

.article-layout{display:grid;grid-template-columns:1fr 320px;gap:32px;padding:24px 0;align-items:start}
.article-main{min-width:0}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:24px;padding:16px 0;border-top:1px solid var(--light);border-bottom:1px solid var(--light)}
.article-nav-item{flex:1;min-width:0}
.article-nav-item a{display:block;padding:12px 16px;background:var(--light);border-radius:10px;font-size:.85rem;color:var(--gray);transition:all .2s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.article-nav-item a:hover{background:#e0f2fe;color:var(--primary)}
.article-sidebar{position:sticky;top:88px}
.sidebar-card{background:var(--white);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:20px}
.sidebar-card h4{font-size:.95rem;font-weight:700;color:var(--dark);margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid var(--primary)}
.sidebar-item{padding:10px 0;border-bottom:1px solid var(--light)}
.sidebar-item:last-child{border:none}
.sidebar-item a{display:flex;justify-content:space-between;align-items:flex-start;gap:8px;transition:color .2s}
.sidebar-item a:hover{color:var(--primary)}
.sidebar-item h5{font-size:.82rem;font-weight:500;line-height:1.4;flex:1}
.sidebar-date{font-size:.7rem;color:#94a3b8;white-space:nowrap;flex-shrink:0}
.sidebar-tags{display:flex;flex-wrap:wrap;gap:6px}
.sidebar-tags a{display:inline-block;padding:4px 12px;background:var(--light);border-radius:6px;font-size:.72rem;color:var(--gray);transition:all .2s}
.sidebar-tags a:hover{background:#e0f2fe;color:var(--primary)}
@media(max-width:1024px){.article-layout{grid-template-columns:1fr}.article-sidebar{position:static}}