/* ========== 全站公共样式（云牵） ========== */
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:"Microsoft Yahei","PingFang SC","Helvetica Neue",sans-serif;color:#333;line-height:1.7;background:#fff;}

/* ===== 顶部导航栏 ===== */
.site-header{background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.08);position:sticky;top:0;z-index:1000;}
.site-nav{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 5%;height:64px;}
.nav-logo{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:#222;text-decoration:none;}
.nav-logo img{width:32px;height:32px;border-radius:6px;}
.nav-links{display:flex;gap:6px;align-items:center;}
.nav-links a{color:#555;text-decoration:none;font-size:15px;padding:8px 16px;border-radius:4px;transition:all .2s;}
.nav-links a:hover{color:#B84A5F;background:#fdf1f3;}
.nav-links a.active{color:#B84A5F;font-weight:600;}
.nav-links .nav-divider{width:1px;height:24px;background:#ddd;margin:0 4px;}
.nav-toggle{display:none;cursor:pointer;width:32px;height:32px;flex-direction:column;justify-content:center;align-items:center;gap:5px;}
.nav-toggle span{display:block;width:22px;height:2px;background:#555;border-radius:2px;transition:all .3s;}

/* ===== Hero Banner ===== */
.hero-banner{background-color:#3a4a5c;color:#fff;text-align:center;padding:80px 5% 60px;}
.hero-banner.rose{background-color:#8E3A4C;background-image:linear-gradient(135deg,#C96B80 0%,#8E3A4C 100%);}
.hero-banner h1{font-size:42px;margin-bottom:16px;letter-spacing:2px;}
.hero-banner .hero-sub{font-size:20px;opacity:.9;margin-bottom:32px;}
.hero-banner .hero-btn{display:inline-block;padding:14px 44px;background:#fff;color:#333;border-radius:6px;font-size:18px;font-weight:600;text-decoration:none;transition:all .25s;margin:0 12px;}
.hero-banner .hero-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.15);}
.hero-banner .hero-btn.primary{background:#B84A5F;color:#fff;}
.hero-banner .hero-btn.primary:hover{background:#8E3A4C;}

/* ===== 通用区块 ===== */
.section{max-width:1200px;margin:0 auto;padding:60px 5%;}
.section-title{font-size:30px;color:#222;text-align:center;margin-bottom:12px;}
.section-desc{font-size:16px;color:#666;text-align:center;margin-bottom:40px;}

/* ===== 功能特性三卡片 ===== */
.feature-cards{display:flex;gap:32px;justify-content:center;flex-wrap:wrap;}
.feature-card{flex:1;min-width:280px;max-width:360px;background:#fff;border-radius:12px;box-shadow:0 2px 16px rgba(0,0,0,.06);padding:36px 28px;text-align:center;transition:transform .3s;}
.feature-card:hover{transform:translateY(-4px);}
.feature-card .f-icon{width:56px;height:56px;border-radius:14px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff;}
.feature-card .f-icon.ci1{background:linear-gradient(135deg,#D96C82,#B84A5F);}
.feature-card .f-icon.ci2{background:linear-gradient(135deg,#7E8FD8,#5A6FC0);}
.feature-card .f-icon.ci3{background:linear-gradient(135deg,#D99A6C,#C9773F);}
.feature-card h3{font-size:20px;margin-bottom:10px;color:#222;}
.feature-card p{font-size:14px;color:#666;line-height:1.7;}

/* ===== 截图展示区 ===== */
.screenshot-box{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin:40px 0;}
.screenshot-item{width:200px;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.08);transition:transform .3s;}
.screenshot-item:hover{transform:scale(1.04);}
.screenshot-item img{width:100%;display:block;}
.screenshot-item .ss-label{padding:8px;text-align:center;font-size:13px;color:#555;background:#f8f9fa;}

/* ===== 下载区 ===== */
.download-section{text-align:center;padding:60px 5%;}
.download-section .dl-btns{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-top:24px;}
.download-section .dl-btn{display:inline-flex;align-items:center;gap:10px;padding:14px 32px;border-radius:8px;font-size:16px;font-weight:600;text-decoration:none;transition:all .2s;}
.download-section .dl-btn.android{background:#B84A5F;color:#fff;}
.download-section .dl-btn.android:hover{background:#8E3A4C;}

/* ===== 页面正文（协议/隐私等） ===== */
.content-wrap{max-width:960px;margin:40px auto;padding:0 5%;}
.content-wrap h1{font-size:28px;color:#222;text-align:center;margin-bottom:12px;}
.update-date{text-align:center;font-size:14px;color:#888;margin-bottom:24px;}
.agreement-body{font-size:15px;color:#444;line-height:1.9;}
.agreement-body h2{font-size:18px;color:#333;margin:28px 0 14px;border-left:4px solid #446688;padding-left:12px;}
.agreement-body p{text-indent:2em;margin-bottom:12px;}
.agreement-body ul{padding-left:2em;margin:8px 0 12px;}
.agreement-body li{margin:6px 0;line-height:1.8;}
.agreement-body a{color:#B84A5F;text-decoration:none;}
.page-main{max-width:1200px;margin:3rem auto;padding:0 5%;}
.page-main h1{font-size:30px;color:#222;margin-bottom:2rem;text-align:center;}
.page-main h2{font-size:18px;color:#333;margin:1.8rem 0 0.8rem;border-left:4px solid #446688;padding-left:10px;}
.page-main p{font-size:15px;color:#444;line-height:1.8;margin-bottom:0.8rem;text-indent:2em;}
.page-main ul,.page-main ol{padding-left:2em;margin:8px 0;}
.page-main li{margin:6px 0;font-size:15px;color:#444;line-height:1.8;}
.page-main .version{text-align:center;font-size:13px;color:#666;margin-bottom:20px;}
.page-main .tip{background:#fdf1f3;border:1px solid #f5d6dc;padding:10px;border-radius:6px;margin:12px 0;}

/* ===== 统一页脚 ===== */
.site-footer{margin-top:6rem;padding:40px 5%;background:#f8f9fa;text-align:center;font-size:14px;color:#555;line-height:2;}
.site-footer .footer-company{font-weight:600;color:#333;margin-bottom:4px;}
.site-footer a{color:#B84A5F;text-decoration:none;}
.site-footer a:hover{text-decoration:underline;}
.site-footer .footer-beian{margin-top:8px;}
.site-footer .footer-beian img{width:14px;height:14px;vertical-align:middle;margin-right:4px;}
.site-footer .footer-contact{margin-top:8px;font-size:13px;color:#777;}

/* ===== 移动端响应 ===== */
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 5%;box-shadow:0 4px 12px rgba(0,0,0,.1);gap:4px;}
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 16px;font-size:16px;border-radius:4px;}
  .nav-toggle{display:flex;}
  .hero-banner{padding:48px 5% 36px;}
  .hero-banner h1{font-size:28px;}
  .hero-banner .hero-sub{font-size:16px;}
  .feature-cards{flex-direction:column;gap:20px;}
  .feature-card{max-width:100%;}
  .screenshot-item{width:160px;}
  .section{padding:36px 5%;}
  .section-title{font-size:24px;}
}