/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;background:#fffafa;color:#3a3a3a;line-height:1.75;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}

/* === 顶部条 === */
.top-strip{background:#fff;border-bottom:1px solid #ffcdd2;font-size:13px;color:#9e9e9e}
.ts-in{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:36px}
.ts-l{display:flex;gap:20px}
.ts-l a{color:#8d8d8d}
.ts-l a:hover{color:#C62828}
.ts-r{display:flex;gap:12px;align-items:center}
.ts-r a{color:#666}
.ts-r a:first-child{color:#C62828;font-weight:600}

/* === 导航头部 === */
.nav-header{background:#fff;border-bottom:2px solid #C62828;position:sticky;top:0;z-index:100}
.nh-in{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;height:60px}
.nh-logo{display:flex;align-items:center;gap:8px;font-size:22px;font-weight:700;color:#2c2c2c;margin-right:40px}
.nh-icon{width:34px;height:34px;background:linear-gradient(135deg,#F44336,#C62828);border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff;font-weight:800}
.nh-menu{display:flex;flex:1}
.nh-menu a{padding:0 22px;height:60px;line-height:60px;font-size:15px;color:#444;font-weight:500;border-bottom:2px solid transparent;margin-bottom:-2px;transition:color .15s,border-color .15s;display:inline-block}
.nh-menu a:hover,.nh-menu a.cur{color:#C62828;border-bottom-color:#C62828}
.nh-cta{padding:8px 24px;background:linear-gradient(135deg,#F44336,#C62828);color:#fff;border:none;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;display:inline-block}
.nh-cta:hover{opacity:.9}

/* === 面包屑 === */
.breadcrumb{max-width:1200px;margin:0 auto;padding:12px 24px;font-size:13px;color:#9e9e9e}
.breadcrumb a{color:#666}
.breadcrumb a:hover{color:#C62828}

/* === 主网格 === */
.main-grid{max-width:1200px;margin:0 auto 40px;padding:0 24px;display:flex;gap:20px}
.mg-body{flex:1;min-width:0}
.mg-side{width:300px;flex-shrink:0}

/* === 封面卡片 === */
.cover-card{background:#fff;border-radius:8px;box-shadow:0 1px 4px rgba(0,0,0,.06);padding:28px 32px;margin-bottom:20px;display:flex;gap:28px;align-items:center}
.cc-img{width:100px;height:100px;flex-shrink:0;background:linear-gradient(135deg,#F44336,#C62828);border-radius:16px;display:flex;align-items:center;justify-content:center}
.cc-img img{display:block;width:100%;height:100%;object-fit:contain;border-radius:16px}
.cc-info{flex:1;min-width:0}
.cc-info h1{font-size:24px;font-weight:700;color:#2c2c2c;margin-bottom:4px}
.cc-tags{font-size:13px;color:#9e9e9e;margin-bottom:12px}
.cc-tags span{margin-right:16px}

/* 邀请码行 */
.code-row{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.cdr-label{font-size:14px;font-weight:600;color:#444;white-space:nowrap}
.cdr-box{display:inline-flex;align-items:center;background:#FFEBEE;border:1px solid #EF9A9A;border-radius:4px;padding:6px 16px}
.cdr-val{font-size:22px;font-weight:800;letter-spacing:1px;color:#C62828;font-family:"Courier New",monospace}
.cdr-copy{margin-left:10px;padding:4px 14px;background:#fff;border:1px solid #EF9A9A;border-radius:3px;color:#C62828;font-size:12px;cursor:pointer;transition:all .15s}
.cdr-copy:hover{background:#FFEBEE}
.cdr-copy.copied{background:#10b981;border-color:#10b981;color:#fff}

.cc-btns{display:flex;gap:10px}
.btn-main{display:inline-flex;align-items:center;gap:6px;padding:9px 24px;background:linear-gradient(135deg,#F44336,#C62828);color:#fff;border:none;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer}
.btn-main:hover{opacity:.9}
.btn-line{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;background:#fff;color:#C62828;border:1px solid #EF9A9A;border-radius:4px;font-size:14px;font-weight:500;cursor:pointer}
.btn-line:hover{background:#FFEBEE}

/* 统计徽章 */
.stat-badge{background:linear-gradient(135deg,#FFEBEE,#FFCDD2);border:1px solid #EF9A9A;border-radius:8px;padding:20px 18px;text-align:center;flex-shrink:0;min-width:140px;display:block;transition:border-color .2s,box-shadow .2s}
a.stat-badge:hover{border-color:#C62828;box-shadow:0 2px 8px rgba(198,40,40,.15)}
.stat-badge h4{font-size:14px;color:#C62828;margin-bottom:6px}
.stat-badge .stats-num{font-size:28px;font-weight:800;color:#C62828}
.stat-badge .stats-desc{font-size:12px;color:#9e9e9e}

/* === 内容区 === */
.content-sec{background:#fff;border-radius:8px;box-shadow:0 1px 4px rgba(0,0,0,.06);padding:24px;margin-bottom:20px}
.cs-title{font-size:18px;font-weight:700;color:#2c2c2c;display:flex;align-items:center;gap:8px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid #ffebeb}
.cs-title::before{content:'';width:3px;height:18px;background:#C62828;border-radius:2px}
.scroll-spot{scroll-margin-top:80px}
.cst-ico{font-size:24px;margin-right:6px;vertical-align:middle}

/* === 三列网格 === */
.tri-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.tg-cell{padding:20px 16px;background:#fffafa;border:1px solid #ffebeb;border-radius:6px;text-align:center}
.tg-cell .tge-emoji{font-size:32px;margin-bottom:8px}
.tg-cell h5{font-size:14px;color:#3a3a3a;margin-bottom:4px}
.tg-cell p{font-size:12px;color:#888}

/* === 流程线 === */
.flow-line{display:flex;gap:20px}
.fl-step{flex:1;text-align:center;position:relative;padding:20px 12px;background:#fffafa;border:1px solid #ffebeb;border-radius:6px}
.fl-step+.fl-step::after{content:'\2192';position:absolute;left:-16px;top:50%;transform:translateY(-50%);font-size:18px;color:#C62828}
.fls-num{width:36px;height:36px;margin:0 auto 10px;background:linear-gradient(135deg,#F44336,#C62828);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700}
.fl-step h5{font-size:14px;color:#3a3a3a;margin-bottom:4px}
.fl-step small{font-size:12px;color:#9e9e9e}

/* === 双列网格 === */
.dual-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.dg-cell{display:flex;gap:12px;padding:16px;background:#fffafa;border:1px solid #ffebeb;border-radius:6px;align-items:flex-start}
.dg-cell .dge-icon{font-size:24px;flex-shrink:0}
.dg-cell h5{font-size:14px;color:#3a3a3a;margin-bottom:4px}
.dg-cell p{font-size:12px;color:#888;line-height:1.6}

/* === 任务列表 === */
.quest-list{display:flex;flex-direction:column;gap:12px}
.ql-row{padding:16px 18px;background:#fffafa;border:1px solid #ffebeb;border-radius:6px;display:flex;gap:14px;align-items:flex-start}
.ql-row .qlr-tag{flex-shrink:0;padding:4px 12px;background:linear-gradient(135deg,#F44336,#C62828);color:#fff;border-radius:3px;font-size:13px;font-weight:600;white-space:nowrap}
.ql-row .qlr-desc h5{font-size:15px;color:#3a3a3a;margin-bottom:4px}
.ql-row .qlr-desc p{font-size:13px;color:#666;line-height:1.7}

/* === 帮助列表 === */
.help-list{display:flex;flex-direction:column;gap:12px}
.hl-item{padding:14px 16px;background:#fffafa;border:1px solid #ffebeb;border-radius:6px}
.hl-item .faq-q{font-size:14px;font-weight:600;color:#3a3a3a;margin-bottom:6px}
.hl-item .faq-a{font-size:13px;color:#666;line-height:1.7}

/* === 文本段落 === */
.about-para{font-size:14px;color:#666;margin-bottom:18px;line-height:1.9}
.how-para{font-size:14px;color:#666;margin-bottom:16px}
.tip-banner{margin-top:16px;padding:12px 16px;background:#FFEBEE;border:1px solid #FFCDD2;border-radius:4px;font-size:13px;color:#888}

/* === 下载网格 === */
.dl-grid{display:flex;gap:16px}
.dlg-box{flex:1;text-align:center;padding:24px 16px;background:#fffafa;border:1px solid #ffebeb;border-radius:8px}
.dlg-box .dlgb-icon{font-size:36px;margin-bottom:10px}
.dlg-box h5{font-size:15px;color:#3a3a3a;margin-bottom:4px}
.dlg-box .dlgb-ver{font-size:12px;color:#9e9e9e;margin-bottom:12px}
.dlgb-btn{display:inline-block;padding:8px 24px;background:linear-gradient(135deg,#F44336,#C62828);color:#fff;border:none;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer}
.dlgb-btn:hover{opacity:.9}
.qr-strip{display:flex;align-items:center;justify-content:center;gap:24px;padding:20px;margin-top:16px}
.qrs-cell{width:120px;height:120px;background:#ffebeb;border:1px solid #ffcdd2;border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:12px;color:#9e9e9e}
.dl-footer{font-size:12px;color:#9e9e9e;margin-top:12px;text-align:center}

/* === 侧边卡片 === */
.side-card{background:#fff;border-radius:8px;box-shadow:0 1px 4px rgba(0,0,0,.06);padding:20px;margin-bottom:20px}
.sc-hero{background:linear-gradient(135deg,#FFEBEE,#FFCDD2);border:1px solid #EF9A9A;text-align:center}
.sc-hero .sch-head{font-size:15px;color:#C62828;margin-bottom:10px}
.sc-hero .sch-code{font-size:24px;font-weight:800;color:#C62828;letter-spacing:1px;font-family:"Courier New",monospace;margin:8px 0}
.sc-hero .sch-btn{width:100%;padding:10px;background:linear-gradient(135deg,#F44336,#C62828);color:#fff;border:none;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer}
.sc-hero .sch-foot{font-size:11px;color:#aaa;margin-top:8px}
.sc-head{font-size:16px;font-weight:700;color:#2c2c2c;display:flex;align-items:center;gap:6px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid #ffebeb}
.sc-head::before{content:'';width:3px;height:16px;background:#C62828;border-radius:2px}
.sc-list{display:flex;flex-direction:column;gap:10px}
.scl-row{display:flex;align-items:center;justify-content:space-between;padding:8px 0;border-bottom:1px solid #f5f5f5;font-size:13px}
.scl-row:last-child{border-bottom:none}
.sclr-chip{padding:1px 8px;border-radius:3px;font-size:11px;flex-shrink:0;margin-left:8px}
.tag-hot{background:#ffeaea;color:#c62828;border:1px solid #ef9a9a}
.tag-new{background:#e8f5e9;color:#2e7d32;border:1px solid #a5d6a7}
.tag-rec{background:#e3f2fd;color:#1565c0;border:1px solid #90caf9}

/* === 特性列表 === */
.sc-feat{display:flex;flex-direction:column;gap:10px}
.scf-row{display:flex;align-items:center;gap:8px;font-size:13px;color:#666}
.scf-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}

/* === 友链条 === */
.link-strip{max-width:1200px;margin:0 auto;padding:20px 24px;display:flex;align-items:center;gap:16px;font-size:13px;color:#9e9e9e;flex-wrap:wrap}
.link-strip b{color:#666;white-space:nowrap}
.link-strip a{color:#888}
.link-strip a:hover{color:#C62828}

/* === 底部栏 === */
.bottom-bar{background:#2c2c2c;color:#9e9e9e;padding:24px;text-align:center;font-size:13px}
.bottom-bar a{color:#bbb}
.bottom-bar a:hover{color:#C62828}
.bottom-bar .bb-links{margin-bottom:10px}
.bottom-bar .bb-text{font-size:12px;color:#777;line-height:2}

/* === 响应式 === */
@media(max-width:900px){
  .main-grid{flex-direction:column}
  .mg-side{width:100%}
  .cover-card{flex-direction:column;text-align:center}
  .stat-badge{width:100%}
  .code-row{justify-content:center}
  .cc-btns{justify-content:center}
  .tri-grid{grid-template-columns:repeat(2,1fr)}
  .flow-line{flex-wrap:wrap}
  .fl-step+.fl-step::after{display:none}
  .dual-grid{grid-template-columns:1fr}
  .dl-grid{flex-direction:column}
  .nh-menu{display:none}
}
@media(max-width:480px){
  .tri-grid{grid-template-columns:1fr}
  .top-strip{display:none}
  .breadcrumb{display:none}
}