/* Microsoft Teams 系列官网风格 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Segoe UI',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',Arial,sans-serif;font-size:16px;line-height:1.75;color:#242424;background:#fff;overflow-x:hidden}
a{color:#5b5fc7;text-decoration:none;transition:color .2s}
a:hover{color:#4f52b2;text-decoration:underline}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.4;color:#242424}
h1{font-size:2.1rem}
h2{font-size:1.6rem}
h3{font-size:1.25rem}
p{margin-bottom:1rem}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部栏 */
.top-bar{background:#f7f7f7;border-bottom:1px solid #e9e9e9;font-size:.82rem;color:#616161;padding:6px 0}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}
.top-bar a{color:#5b5fc7;margin:0 8px}
.top-bar a:hover{color:#4f52b2}

/* Header */
.header{background:#fff;box-shadow:0 1px 8px rgba(0,0,0,.06);position:sticky;top:0;z-index:1000}
.header .container{display:flex;justify-content:space-between;align-items:center;height:64px;flex-wrap:nowrap}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo img{height:32px;width:32px}
.logo span{font-size:1.1rem;font-weight:600;color:#242424;white-space:nowrap}
nav{flex:0 0 auto}
nav ul{display:flex;align-items:center}
nav ul li a{display:block;padding:0 12px;font-size:.88rem;color:#242424;font-weight:500;line-height:64px;transition:background .2s,color .2s;white-space:nowrap}
nav ul li a:hover,nav ul li a.active{color:#5b5fc7;background:#f5f5fb}
.btn-download{display:inline-block;background:#5b5fc7;color:#fff;padding:6px 14px;border-radius:999px;font-size:.82rem;font-weight:600;margin-left:10px;transition:background .2s;white-space:nowrap;flex-shrink:0}
.btn-download:hover{background:#4f52b2;color:#fff;text-decoration:none}
.mobile-toggle{display:none;cursor:pointer;font-size:1.4rem;padding:8px;flex-shrink:0}

/* 搜索框 */
.search-box{display:flex;align-items:center;border:1px solid #d1d1d1;border-radius:6px;padding:3px 6px;margin-left:12px;flex-shrink:0}
.search-box input{border:none;background:transparent;outline:none;padding:4px 8px;font-size:.82rem;width:110px}
.search-box button{background:#5b5fc7;color:#fff;border:none;border-radius:4px;padding:4px 12px;cursor:pointer;font-size:.82rem}

/* Hero */
.hero{background:linear-gradient(120deg,#4f52b2 0%,#5b5fc7 55%,#7b7fd6 100%);color:#fff;padding:70px 0;text-align:center}
.hero h1{font-size:2.4rem;margin-bottom:14px;color:#fff;text-wrap:balance}
.hero p{font-size:1.1rem;margin-bottom:28px;opacity:.92;max-width:720px;margin-left:auto;margin-right:auto}
.hero .btn-group{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:11px 28px;border-radius:999px;font-size:.95rem;font-weight:600;transition:all .25s;cursor:pointer}
.btn-primary{background:#fff;color:#5b5fc7;border:2px solid #fff}
.btn-primary:hover{background:transparent;color:#fff;text-decoration:none}
.btn-outline{background:transparent;color:#fff;border:2px solid #fff}
.btn-outline:hover{background:#fff;color:#5b5fc7;text-decoration:none}

/* 统计 */
.stats{background:#f7f7fa;padding:36px 0;border-bottom:1px solid #e9e9e9}
.stats .container{display:flex;justify-content:space-around;flex-wrap:wrap;gap:18px}
.stat-item{text-align:center}
.stat-item .num{font-size:2rem;font-weight:700;color:#5b5fc7}
.stat-item .label{font-size:.85rem;color:#616161;margin-top:4px}

/* 区块 */
.section{padding:56px 0}
.section-title{text-align:center;margin-bottom:44px}
.section-title h2{position:relative;display:inline-block;padding-bottom:10px;margin-bottom:10px}
.section-title h2::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:56px;height:3px;background:#5b5fc7;border-radius:2px}
.section-title p{color:#616161;font-size:.95rem}
.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:26px}
.product-card{background:#fff;border-radius:12px;box-shadow:0 2px 14px rgba(0,0,0,.06);padding:26px;transition:transform .25s,box-shadow .25s;border:1px solid #f0f0f0}
.product-card:hover{transform:translateY(-4px);box-shadow:0 8px 26px rgba(0,0,0,.1)}
.product-card .icon{width:52px;height:52px;background:#f2f2fa;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:14px}
.product-card h3{margin-bottom:8px;font-size:1.1rem}
.product-card p{color:#616161;font-size:.9rem;line-height:1.7}
.product-card a{color:#5b5fc7;font-weight:600;display:inline-flex;align-items:center;gap:4px;margin-top:10px;font-size:.9rem}
.product-card a:hover{text-decoration:underline}

/* 优势 */
.advantages{background:#f7f7fa}
.adv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.adv-item{text-align:center;padding:26px 18px;background:#fff;border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.adv-item .adv-icon{font-size:2.2rem;margin-bottom:12px}
.adv-item h3{margin-bottom:8px;font-size:1.05rem}
.adv-item p{color:#616161;font-size:.88rem}

/* 新闻 */
.news-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:22px}
.news-item{background:#fff;border-radius:10px;border:1px solid #eee;padding:22px;transition:box-shadow .25s}
.news-item:hover{box-shadow:0 4px 18px rgba(0,0,0,.08)}
.news-item .date{font-size:.78rem;color:#9e9e9e;margin-bottom:6px}
.news-item h3{font-size:1.05rem;margin-bottom:6px}
.news-item h3 a{color:#242424}
.news-item h3 a:hover{color:#5b5fc7}
.news-item p{color:#616161;font-size:.88rem;line-height:1.6}

/* 合作伙伴 */
.partners{background:#f7f7fa;padding:46px 0}
.partner-logos{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:26px;margin-top:24px}
.partner-logos span{font-size:1rem;color:#9e9e9e;padding:10px 18px;border:1px solid #e5e5e5;border-radius:8px;background:#fff}

/* 面包屑 */
.breadcrumb{background:#f7f7fa;padding:14px 0;font-size:.85rem;color:#616161;border-bottom:1px solid #eee}
.breadcrumb a{color:#5b5fc7}
.breadcrumb span{margin:0 6px;color:#ccc}

/* 内页Banner */
.page-banner{background:linear-gradient(120deg,#4f52b2 0%,#5b5fc7 55%,#7b7fd6 100%);color:#fff;padding:46px 0;text-align:center}
.page-banner h1{font-size:1.9rem;margin-bottom:10px;color:#fff}
.page-banner p{opacity:.9;font-size:1rem}

/* 文章 */
.article-content{padding:46px 0}
.article-content .container{display:grid;grid-template-columns:1fr 300px;gap:36px}
.article-body h2{font-size:1.4rem;margin:28px 0 14px;padding-left:12px;border-left:4px solid #5b5fc7}
.article-body h3{font-size:1.15rem;margin:22px 0 10px}
.article-body p{margin-bottom:13px;line-height:1.9}
.article-body ul{margin:12px 0;padding-left:20px}
.article-body ul li{margin-bottom:8px;padding-left:10px;position:relative;line-height:1.7}
.article-body ul li::before{content:'•';position:absolute;left:0;color:#5b5fc7;font-weight:700}
.article-body ol{margin:12px 0;padding-left:22px}
.article-body ol li{margin-bottom:8px;line-height:1.7}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0}
.article-body table th,.article-body table td{padding:11px 14px;border:1px solid #e5e5e5;text-align:left;font-size:.88rem}
.article-body table th{background:#f2f2fa;color:#242424;font-weight:600}
.article-body table tr:nth-child(even){background:#fafafc}
.article-body blockquote{border-left:4px solid #5b5fc7;background:#f7f7fd;padding:14px 18px;margin:18px 0;font-style:italic;color:#555;border-radius:0 6px 6px 0}

/* 侧边栏 */
.sidebar .widget{background:#fff;border-radius:10px;border:1px solid #eee;padding:18px;margin-bottom:18px}
.sidebar .widget h4{font-size:.95rem;margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid #5b5fc7}
.sidebar .widget ul li{padding:7px 0;border-bottom:1px dashed #f0f0f0}
.sidebar .widget ul li:last-child{border-bottom:none}
.sidebar .widget ul li a{color:#555;font-size:.88rem}
.sidebar .widget ul li a:hover{color:#5b5fc7}
.sidebar .hot-tags{display:flex;flex-wrap:wrap;gap:8px}
.sidebar .hot-tags a{display:inline-block;padding:4px 11px;background:#f5f5f5;border-radius:999px;font-size:.78rem;color:#616161}
.sidebar .hot-tags a:hover{background:#5b5fc7;color:#fff;text-decoration:none}

/* FAQ */
.faq-item{border:1px solid #eee;border-radius:8px;margin-bottom:12px;overflow:hidden}
.faq-item summary{padding:14px 18px;cursor:pointer;font-weight:600;background:#fafafc;transition:background .2s;font-size:.95rem}
.faq-item summary:hover{background:#f2f2fa}
.faq-item[open] summary{background:#f2f2fa;border-bottom:1px solid #eee}
.faq-item .faq-answer{padding:14px 18px;color:#555;line-height:1.8;font-size:.9rem}

/* 内链推荐 */
.related-articles{margin-top:36px;padding-top:26px;border-top:1px solid #eee}
.related-articles h3{margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.related-card{border:1px solid #eee;border-radius:8px;padding:14px;transition:box-shadow .25s;text-decoration:none}
.related-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.06);text-decoration:none}
.related-card h4{font-size:.9rem;margin-bottom:4px;color:#242424}
.related-card p{font-size:.8rem;color:#9e9e9e}

/* Footer */
.footer{background:#1b1b2f;color:#cfcfdf;padding:44px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:26px}
.footer h4{color:#fff;font-size:.95rem;margin-bottom:14px}
.footer ul li{margin-bottom:7px}
.footer ul li a{color:#b0b0c8;font-size:.85rem}
.footer ul li a:hover{color:#8f93e8}
.footer-bottom{text-align:center;padding:18px 0;margin-top:26px;border-top:1px solid #2d2d4a;font-size:.8rem;color:#8888a8}

/* 响应式 */
@media(max-width:1100px){.search-box{display:none}}
@media(max-width:992px){
  .article-content .container{grid-template-columns:1fr}
  nav ul{display:none}
  .mobile-toggle{display:block}
  nav ul.open{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:#fff;box-shadow:0 4px 12px rgba(0,0,0,.1);padding:8px 0;z-index:999}
  nav ul.open li a{line-height:2.4}
  .header .container{flex-wrap:wrap}
  .btn-download{margin-left:0;margin-top:6px}
  .hero h1{font-size:1.7rem}
}
@media(max-width:640px){
  h1{font-size:1.5rem}
  h2{font-size:1.25rem}
  .product-grid{grid-template-columns:1fr}
  .stats .container{flex-direction:column;align-items:center}
}