/* =========================================================
   夸父资源社 · 演示站  —  前端统一样式
   配色：清爽蓝为主、橙色点缀；响应式两栏布局
   ========================================================= */
:root{
  --primary:#2b7de9; --primary-dark:#1e63c4; --accent:#ff7a18;
  --bg:#f4f6fa; --card:#ffffff; --text:#1f2733; --muted:#8a93a3;
  --line:#e8ecf3; --radius:14px; --shadow:0 6px 24px rgba(31,39,51,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.hidden{display:none!important}
.muted{color:var(--muted)}
.small{font-size:12px}
.center{text-align:center}
.tag{background:#eef4ff;color:var(--primary);padding:1px 8px;border-radius:6px;font-size:12px;font-weight:600}
.tag.best{background:#fff3e8;color:var(--accent)}
.container{max-width:1180px;margin:0 auto;padding:0 16px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:50;background:linear-gradient(120deg,#1e63c4,#2b7de9 60%,#3a8bff);box-shadow:0 2px 12px rgba(30,99,196,.25)}
.header-inner{display:flex;align-items:center;gap:18px;height:62px}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand-mark{width:38px;height:38px;border-radius:11px;background:#fff;color:var(--primary);display:grid;place-items:center;font-weight:800;font-size:20px;box-shadow:0 4px 10px rgba(0,0,0,.12)}
.brand-text{font-weight:700;font-size:19px;display:flex;align-items:center;gap:6px}
.brand-tag{font-size:11px;font-weight:600;background:rgba(255,255,255,.22);padding:1px 7px;border-radius:999px}
.main-nav{display:flex;gap:6px;margin-left:10px}
.main-nav a{color:rgba(255,255,255,.88);padding:8px 14px;border-radius:10px;font-size:15px;transition:.18s}
.main-nav a:hover{background:rgba(255,255,255,.16);color:#fff}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{display:flex;align-items:center;background:rgba(255,255,255,.95);border-radius:999px;overflow:hidden}
.search-box input{border:0;outline:0;padding:8px 14px;width:200px;font-size:14px;background:transparent}
.search-box button{border:0;background:transparent;padding:0 12px;cursor:pointer;font-size:15px}
.btn{cursor:pointer;border:0;border-radius:10px;padding:9px 16px;font-size:14px;font-weight:600;transition:.18s}
.btn-ghost{background:rgba(255,255,255,.16);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.28)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 12px rgba(43,125,233,.3)}
.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{background:#fff;color:var(--primary);border:1.5px solid var(--primary)}
.btn-outline:hover{background:#eef4ff}
.btn-danger{background:#ff4d4f;color:#fff}
.btn-danger:hover{background:#e23b3d}
.block{display:block;width:100%}
.nav-toggle{display:none;background:transparent;border:0;color:#fff;font-size:22px;cursor:pointer}

/* 布局 */
.layout{display:grid;grid-template-columns:1fr 320px;gap:22px;padding-top:22px;padding-bottom:40px}
.content{display:flex;flex-direction:column;gap:22px;min-width:0}

/* 横幅 */
.hero{background:linear-gradient(120deg,#1e63c4,#2b7de9);border-radius:18px;padding:30px 32px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;box-shadow:var(--shadow)}
.hero h1{font-size:26px;margin-bottom:8px}
.hero p{color:rgba(255,255,255,.9);margin-bottom:18px}
.hero-actions{display:flex;gap:12px}
.hero .btn-outline{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.6)}
.hero-stats{display:flex;gap:22px;text-align:center}
.hero-stats b{font-size:22px}.hero-stats span{font-size:12px;color:rgba(255,255,255,.8)}

/* 通用块 */
.block{background:var(--card);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.block-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.block-head h2{font-size:18px;position:relative;padding-left:12px}
.block-head h2::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;border-radius:4px;background:var(--primary)}
.block-sub{color:var(--muted);font-size:13px}
.block-more{text-align:right;margin-top:12px}.block-more a{color:var(--primary);font-weight:600}

/* 公告 */
.notice-list{list-style:none;display:flex;flex-direction:column;gap:8px}
.notice-list li{padding:8px 0;border-bottom:1px dashed var(--line)}
.notice-list li:last-child{border:0}

/* 分类宫格 */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cat-card{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid var(--line);border-radius:12px;transition:.18s;background:#fbfcfe}
.cat-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 16px rgba(43,125,233,.12)}
.cat-icon{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;font-size:22px;color:#fff;flex:none}
.cat-meta b{display:block;font-size:15px}.cat-meta span{font-size:12px;color:var(--muted)}

/* 资源列表 */
.tabs{display:flex;gap:4px;background:#eef1f6;padding:4px;border-radius:10px}
.tab{border:0;background:transparent;padding:6px 14px;border-radius:8px;cursor:pointer;font-size:14px;color:var(--muted)}
.tab.active{background:#fff;color:var(--primary);font-weight:700;box-shadow:0 2px 6px rgba(0,0,0,.06)}
.tab.rss{margin-left:auto;color:#e67e22}
.tab.rss:hover{background:rgba(230,126,34,.12)}
.res-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.res-item{display:flex;gap:14px;padding:12px;border:1px solid var(--line);border-radius:12px;transition:.18s}
.res-item:hover{border-color:var(--primary)}
.res-thumb{width:96px;height:72px;border-radius:10px;flex:none;display:grid;place-items:center;font-size:30px;color:#fff}
.res-body{flex:1;min-width:0}
.res-title{font-weight:600;font-size:15px;margin-bottom:6px}
.res-tags{display:flex;gap:8px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.res-foot{display:flex;gap:14px;font-size:12px;color:var(--muted);margin-top:8px}
.res-foot .hot{color:var(--accent)}

/* 侧栏 */
.sidebar{display:flex;flex-direction:column;gap:18px}
.card{background:var(--card);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}
.card h3{font-size:16px;margin-bottom:12px}
.user-panel p{font-size:13px;margin-bottom:12px}
.link-center{display:block;text-align:center;color:var(--primary);font-size:13px;margin-top:10px}
.user-row{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:700;flex:none}
.avatar.big{width:64px;height:64px;font-size:24px}
.user-name{font-weight:700}
.user-stat{display:flex;justify-content:space-around;text-align:center;padding:10px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:12px}
.user-stat b{display:block;font-size:16px}.user-stat span{font-size:12px;color:var(--muted)}
.kv{list-style:none}
.kv li{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px dashed var(--line);font-size:14px}
.kv li:last-child{border:0}.kv b{color:var(--primary)}
.nav-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:6px}
.nav-list .nav-item{display:flex;align-items:center;gap:8px;font-size:13px;padding:6px 8px;border-radius:8px;transition:.15s}
.nav-list .nav-item:hover{background:#eef4ff;color:var(--primary)}
.rank-list{list-style:none}
.rank-list li{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px dashed var(--line);font-size:14px}
.rank-list li:last-child{border:0}
.rank-list li::before{counter-increment:r;content:counter(r);width:20px;height:20px;border-radius:6px;background:#eef1f6;color:var(--muted);display:grid;place-items:center;font-size:12px;margin-right:8px}
.rank-list li:nth-child(1)::before{background:var(--accent);color:#fff}
.rank-list b{color:var(--primary)}

/* 页脚 */
.site-footer{background:#1f2733;color:#c4ccd8;padding:28px 0;margin-top:10px}
.disclaimer{font-size:13px;max-width:760px;margin:0 auto 12px;text-align:center}
.disclaimer strong{color:#fff}
.footer-links{text-align:center;margin-bottom:10px}
.footer-links a{color:#9fb0c6;margin:0 4px}.footer-links a:hover{color:#fff}
.copyright{text-align:center;font-size:12px;color:#7b8696}

/* 子导航 */
.subnav{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:14px 0;flex-wrap:wrap}
.breadcrumb{color:var(--muted)}
.page-title{font-size:22px;margin-bottom:4px}
.section-card{background:var(--card);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);margin-bottom:18px}
.section-card .desc{color:var(--muted);font-size:14px}
.filter-tabs{display:flex;gap:6px;margin-top:14px}
.thread-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.thread-item{display:flex;align-items:center;gap:14px;padding:14px;border:1px solid var(--line);border-radius:12px;transition:.18s}
.thread-item:hover{border-color:var(--primary)}
.thread-main{flex:1;min-width:0}
.thread-title{font-weight:600;margin-bottom:6px}
.thread-meta{font-size:12px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap}
.thread-snippet{font-size:13px;color:var(--muted);line-height:1.55;margin:2px 0 6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.thread-snippet mark,.thread-title mark{background:rgba(255,179,0,.32);color:inherit;border-radius:3px;padding:0 1px;font-weight:600}
.thread-num{text-align:center;flex:none;min-width:64px}
.thread-num b{display:block;font-size:16px;color:var(--primary)}.thread-num span{font-size:12px;color:var(--muted)}

/* HTML 站点地图 */
.sitemap-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:16px}
.sitemap-h{font-size:16px;margin:18px 0 8px;color:var(--ink)}
.sitemap-links{list-style:none;display:flex;flex-direction:column;gap:7px}
.sitemap-links a{color:var(--primary)}
.sitemap-rss{margin-left:4px;font-size:12px;opacity:.7}
.sitemap-thread-list{max-height:560px;overflow:auto;padding-right:6px}
@media(max-width:680px){.sitemap-wrap{grid-template-columns:1fr}}

/* 帖子详情 */
.thread-head{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:16px}
.thread-author{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:13px;flex-wrap:wrap;margin-top:8px}
.res-box{margin-top:14px;background:#f7f9fc;border:1px solid var(--line);border-radius:12px;padding:14px;display:grid;gap:8px}
.res-row{display:flex;gap:10px;font-size:14px}
.res-row span{color:var(--muted);min-width:64px}.res-row b.link{word-break:break-all;color:var(--primary)}
.thread-cover{margin:0 0 16px}
.thread-cover img{width:100%;max-height:520px;object-fit:cover;border-radius:var(--radius);display:block;background:#f0f3f8}

/* 失效提示 / 状态标签 */
.dead-notice{margin:12px 0;padding:10px 14px;border-radius:10px;background:#fff3f3;color:#c0392b;border:1px solid #ffd6d6;font-size:14px}
.tag.dead{background:#fff3f3;color:#c0392b}

/* 帖子操作栏（点赞/收藏/举报/编辑） */
.action-bar{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 4px}
.action-bar .abtn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:1.5px solid var(--line);border-radius:999px;background:#fff;color:#475467;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none;transition:.15s}
.action-bar .abtn:hover{border-color:var(--primary);color:var(--primary)}
.action-bar .abtn.active{background:#eef4ff;border-color:var(--primary);color:var(--primary)}
.action-bar .abtn.danger:hover{border-color:#ff4d4f;color:#ff4d4f}

/* 分页 */
.pager{display:flex;align-items:center;justify-content:center;gap:14px;margin:22px 0 4px;flex-wrap:wrap}
.pager .pg{padding:8px 16px;border:1.5px solid var(--line);border-radius:999px;font-size:14px;font-weight:600;color:var(--primary);background:#fff;transition:.15s}
.pager .pg:hover{border-color:var(--primary)}
.pager .pg.disabled{color:var(--muted);border-color:var(--line);cursor:not-allowed;background:#fafbfc}
.pager .pg-info{font-size:13px;color:var(--muted)}
.post{display:flex;gap:14px;background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin-bottom:12px}
.post-body{flex:1;min-width:0}
.post-body .name{font-weight:700;margin-bottom:6px}
.post-body .text{font-size:15px;color:#2a3340}
.post-body .text p{margin:6px 0}.post-body .text pre{background:#f4f6fa;padding:10px;border-radius:8px;overflow:auto}
.reply-box{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.reply-box textarea{width:100%;min-height:90px;border:1.5px solid var(--line);border-radius:10px;padding:10px;font-size:14px;outline:0;resize:vertical;font-family:inherit}
.reply-box textarea:focus{border-color:var(--primary)}
.reply-box .row-between{margin-top:10px;display:flex;justify-content:space-between;align-items:center}

/* 表单 */
.form{display:flex;flex-direction:column;gap:14px;max-width:640px}
.form.inline{display:flex;flex-direction:row;flex-wrap:wrap;gap:10px;align-items:flex-end;max-width:none}
.form label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}
.form input[type=text],.form input[type=email],.form input[type=password],.form input[type=url],.form input[type=number],.form select,.form textarea{border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px;outline:0;font-family:inherit;background:#fff;color:var(--text)}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--primary)}
.form .check{flex-direction:row;align-items:center;gap:6px;color:var(--text)}
.row-between{display:flex;justify-content:space-between;align-items:center}

/* 认证 */
.auth-wrap{display:grid;place-items:center;padding:48px 16px}
.auth-card{width:380px;max-width:100%;text-align:left}
.auth-card h2{margin-bottom:16px;font-size:22px}
.auth-card .form{margin:0 auto}

/* 提示 */
.flash-wrap{position:fixed;top:74px;left:50%;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px}
.flash{padding:10px 18px;border-radius:10px;font-size:14px;box-shadow:0 8px 24px rgba(0,0,0,.18);color:#fff}
.flash-ok{background:#13b67b}.flash-warn{background:#ff7a18}.flash-error{background:#ff4d4f}

/* 响应式 */
@media(max-width:920px){.layout{grid-template-columns:1fr}.sidebar{order:2}.cat-grid{grid-template-columns:repeat(2,1fr)}.hero-stats{width:100%;justify-content:space-around}}
@media(max-width:680px){
  .main-nav{position:absolute;top:62px;left:0;right:0;background:#1e63c4;flex-direction:column;padding:10px 16px;gap:4px;display:none}
  .main-nav.open{display:flex}
  .search-box input{width:120px}.nav-toggle{display:block}
  .cat-grid{grid-template-columns:1fr 1fr}
  .res-thumb{width:72px;height:60px;font-size:24px}
}