/* 91社官网 —— 社区文化站样式 */
:root{
  --paper:#fcfaf6;
  --ink:#171310;
  --muted:#6f655a;
  --line:#e7ddcf;
  --accent:#e2552e;
  --violet:#5a48d0;
  --mint:#12897a;
  --cream:#f5eee2;
  --dark:#1b1714;
  --radius:14px;
  --max:1180px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font:16px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  letter-spacing:.01em;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.01em;font-weight:800}
p{margin:0 0 14px}
ul,ol{margin:0 0 14px;padding-left:20px}
li{margin:6px 0}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
main{display:block}

/* 顶栏 */
.topbar{background:var(--dark);color:#cfc6b8;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px}
.tb-note{display:flex;align-items:center;gap:8px;white-space:nowrap}
.dot{width:6px;height:6px;border-radius:50%;background:#6ee7b7;display:inline-block}
.topbar nav{display:flex;gap:18px}
.topbar a{color:#cfc6b8;font-size:13px}
.topbar a:hover{color:#fff}

/* 头部 */
.site-head{border-bottom:1px solid var(--line);background:var(--paper)}
.head-main{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:22px 0 18px}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{
  width:52px;height:52px;flex:none;
  background:var(--accent);color:#fff;border-radius:12px;
  display:grid;place-items:center;font-size:20px;font-weight:800;letter-spacing:-.03em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:26px;font-weight:900;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.22em;color:var(--muted);margin-top:3px}
.head-meta{display:flex;align-items:center;gap:18px}
.head-date{text-align:right;line-height:1.35}
.head-date b{display:block;font-size:14px}
.head-date span{font-size:12px;color:var(--muted)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;border-radius:10px;
  padding:10px 20px;font-size:14px;font-weight:700;white-space:nowrap;
  transition:background .2s;
}
.btn:hover{background:var(--accent);color:#fff}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn.small{padding:7px 14px;font-size:13px}

/* 主导航 */
.mainnav{border-top:1px solid var(--line)}
.mainnav .wrap{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.mainnav .wrap::-webkit-scrollbar{display:none}
.mainnav a{
  padding:14px 16px;font-size:15px;font-weight:600;color:#3b342c;
  border-bottom:2px solid transparent;white-space:nowrap;
}
.mainnav a:hover{color:var(--accent)}
.mainnav a[aria-current="page"]{color:var(--accent);border-bottom-color:var(--accent)}

/* 面包屑 */
.crumb{font-size:13px;color:var(--muted);padding-top:16px}
.crumb .sep{margin:0 8px;color:#c0b5a4}
.crumb span{color:var(--ink);font-weight:600}

/* 区块头 */
section{padding:38px 0}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:20px}
.kicker{
  display:inline-block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);font-weight:700;margin-bottom:6px;
}
.section-head h2{font-size:26px}
.section-head .sub{margin:6px 0 0;color:var(--muted);font-size:14px;max-width:60ch}
.more{font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap}
.more:hover{color:var(--accent)}

/* 首页 hero */
.hero{padding:44px 0 30px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start}
.hero h1{font-size:44px;line-height:1.18;letter-spacing:-.02em;margin-bottom:18px}
.hero .lede{font-size:17px;color:#4a4138;max-width:38em}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 0}
.hero-tags a{
  font-size:13px;padding:6px 13px;border:1px solid var(--line);
  border-radius:100px;color:#4a4138;background:#fff;
}
.hero-tags a:hover{border-color:var(--accent);color:var(--accent)}
.hero-figure{position:relative}
.hero-figure img{border-radius:var(--radius);width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.hero-cap{
  position:absolute;left:14px;bottom:14px;right:14px;
  background:rgba(23,19,16,.82);color:#fff;border-radius:10px;
  padding:12px 14px;font-size:13px;line-height:1.55;backdrop-filter:blur(6px);
}
.hero-cap b{color:#ffd6c6}
.hero-mini{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.hero-mini div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.hero-mini b{display:block;font-size:20px}
.hero-mini span{font-size:12px;color:var(--muted)}

/* 数据带 */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  margin:0 0 8px;
}
.stat{background:#fff;padding:20px 22px}
.stat b{display:block;font-size:28px;font-weight:800;letter-spacing:-.02em}
.stat span{font-size:13px;color:var(--muted)}

/* 快讯 */
.flash{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;display:flex;gap:14px;align-items:flex-start}
.flash .label{flex:none;background:var(--accent);color:#fff;font-size:12px;font-weight:700;border-radius:6px;padding:3px 9px;margin-top:2px}
.flash ul{margin:0;padding:0;list-style:none;display:grid;gap:6px}
.flash li{font-size:14px;color:#4a4138;margin:0}
.flash li a{color:#4a4138}
.flash li a:hover{color:var(--accent)}
.flash time{color:var(--muted);font-size:12px;margin-left:8px;font-variant-numeric:tabular-nums}

/* 通用卡片 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .18s,box-shadow .18s}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(38,28,18,.08)}
.card-body{padding:16px 18px 18px}
.card-body h3{font-size:17px;margin-bottom:6px}
.card-body p{font-size:13.5px;color:var(--muted);margin:0}
.card-meta{font-size:12px;color:var(--muted);margin-top:10px;display:flex;gap:10px;flex-wrap:wrap}
.card-meta span{display:inline-flex;align-items:center;gap:4px}
.tag-pill{display:inline-block;font-size:11px;font-weight:700;padding:2px 8px;border-radius:100px;background:var(--cream);color:#7a5a34}
.tag-pill.acc{background:#fdece5;color:#b53d1c}
.tag-pill.vio{background:#eeebfd;color:#3f2fa8}
.tag-pill.mint{background:#e2f5f0;color:#0b6d60}

/* 图片 */
.cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line)}

/* 视频卡 */
.video-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.video-card:hover{box-shadow:0 12px 28px rgba(38,28,18,.1)}
.thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#241f1a}
.thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.92);
  color:var(--ink);display:grid;place-items:center;font-size:15px;font-weight:700;
}
.duration{
  position:absolute;right:9px;bottom:9px;background:rgba(23,19,16,.8);
  color:#fff;font-size:11px;padding:2px 7px;border-radius:4px;font-variant-numeric:tabular-nums;
}
.vc-body{padding:14px 16px 16px}
.vc-body b{display:block;font-size:15px;line-height:1.45;margin-bottom:5px}
.vc-body span{font-size:12px;color:var(--muted)}

/* 列表 */
.news-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.news-list li{display:flex;gap:14px;align-items:baseline;padding:13px 0;border-bottom:1px solid var(--line);margin:0}
.news-list time{flex:none;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.news-list a{font-size:15px;line-height:1.5}
.news-list .tag{margin-left:auto;flex:none}

.rank-list{list-style:none;margin:0;padding:0}
.rank-list li{display:flex;gap:12px;align-items:center;padding:11px 0;border-bottom:1px dashed #ece3d6;margin:0}
.rank-list .idx{flex:none;width:22px;font-size:13px;font-weight:800;color:#c3b7a5;font-variant-numeric:tabular-nums}
.rank-list li:nth-child(-n+3) .idx{color:var(--accent)}
.rank-list a{flex:1;font-size:14.5px;line-height:1.5}
.rank-list b{flex:none;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

/* 侧栏盒子 */
.side-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin-bottom:16px}
.box-head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:10px}
.box-head h3{font-size:15.5px}
.box-head a{font-size:12px;color:var(--muted)}
.plain-list{list-style:none;margin:0;padding:0;font-size:14px}
.plain-list li{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-bottom:1px dashed #efe7da;margin:0}
.plain-list li:last-child{border-bottom:0}
.plain-list b{font-weight:700;font-variant-numeric:tabular-nums;color:#3b342c}
.plain-list .dim{color:var(--muted);font-size:12.5px}

/* 双栏 */
.split{display:grid;grid-template-columns:1fr 320px;gap:34px;align-items:start}

/* 表格 */
.split>*,.hero-grid>*,.grid-2>*,.grid-3>*,.grid-4>*,.people-grid>*{min-width:0}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin:14px 0 18px}
table{width:100%;border-collapse:collapse;font-size:14px}
caption{caption-side:top;text-align:left;font-weight:700;font-size:13px;padding:13px 16px;color:var(--muted);border-bottom:1px solid var(--line);background:#fdfbf7}
th,td{padding:11px 16px;text-align:left;border-bottom:1px solid #f1e9dd;vertical-align:top}
thead th{font-size:12.5px;letter-spacing:.04em;color:var(--muted);background:#faf7f1;font-weight:700}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#fdfaf5}
td.num{font-variant-numeric:tabular-nums;white-space:nowrap}

/* 说明 */
.note{background:var(--cream);border-left:3px solid var(--accent);border-radius:8px;padding:13px 16px;font-size:13.5px;color:#5a4a36;margin:14px 0}
.note.vio{background:#f2f0fd;border-left-color:var(--violet);color:#3a3170}

/* 步骤 */
.steps{list-style:none;counter-reset:s;padding:0;margin:14px 0;display:grid;gap:12px}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px 14px 52px;position:relative;margin:0}
.steps li::before{
  content:counter(s);position:absolute;left:16px;top:14px;
  width:24px;height:24px;border-radius:7px;background:var(--accent);color:#fff;
  font-size:13px;font-weight:800;display:grid;place-items:center;
}
.steps b{display:block;font-size:15px;margin-bottom:2px}
.steps p{margin:0;font-size:13.5px;color:var(--muted)}

/* FAQ */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:15px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;color:var(--accent);font-weight:800}
.faq details[open] summary::after{content:"−"}
.faq p{margin:10px 0 0;font-size:14px;color:#4a4138}

/* 目录 */
.toc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;margin-bottom:24px}
.toc h2{font-size:14px;letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin-bottom:10px}
.toc ol{margin:0;padding-left:18px;columns:2;column-gap:32px;font-size:14px}
.toc li{margin:5px 0;break-inside:avoid}

/* 文章 */
.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 34px}
.article h2{font-size:22px;margin:28px 0 12px}
.article h2:first-child{margin-top:0}
.article h3{font-size:17px;margin:22px 0 8px}
.article p{font-size:15.5px;color:#3f3830}
.article ul,.article ol{font-size:15.5px;color:#3f3830}
.article figure{margin:18px 0}
.article figure img{border-radius:10px;width:100%;height:auto}
.article figcaption{font-size:12.5px;color:var(--muted);margin-top:8px}
.byline{font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.byline b{color:var(--ink)}

/* 引言卡 */
.quote-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px}
.quote-card p{font-size:15px;color:#3f3830;margin:0 0 14px}
.quote-card .who{display:flex;gap:12px;align-items:center;font-size:13px;color:var(--muted)}
.quote-card img{width:40px;height:40px;border-radius:50%;object-fit:cover}
.quote-card .ava{
  width:40px;height:40px;flex:none;border-radius:50%;
  background:var(--cream);color:#8a6234;
  display:grid;place-items:center;font-size:15px;font-weight:800;
  border:1px solid #e8dcc8;
}
.quote-card .who b{display:block;color:var(--ink);font-size:14px}

/* 圈子卡 */
.circle-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.circle-card .cc-top{display:flex;gap:10px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line)}
.cc-icon{width:34px;height:34px;border-radius:9px;background:var(--cream);display:grid;place-items:center;font-size:15px;font-weight:800;color:#7a5a34;flex:none}
.circle-card .cc-top b{font-size:15px}
.circle-card .cc-top span{font-size:12px;color:var(--muted);display:block}
.circle-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.circle-card .cc-body{padding:12px 16px 16px}
.circle-card .cc-body p{font-size:13px;color:var(--muted);margin:0 0 10px}
.cc-foot{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);border-top:1px dashed var(--line);padding-top:10px}

/* 技能交换 */
.swap-row{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}
.swap-side{font-size:14px}
.swap-side span{display:block;font-size:11px;color:var(--muted);letter-spacing:.1em;text-transform:uppercase;margin-bottom:2px}
.swap-arrow{color:var(--accent);font-weight:800;font-size:16px}

/* 名片网格 */
.people-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.person{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-align:center}
.person img{width:64px;height:64px;border-radius:50%;object-fit:cover;margin:0 auto 10px}
.person b{display:block;font-size:14.5px}
.person span{font-size:12px;color:var(--muted);display:block;margin-top:2px}
.person .tag-pill{margin-top:8px}

/* CTA */
.cta{
  background:var(--dark);color:#fff;border-radius:18px;padding:38px 40px;
  display:flex;justify-content:space-between;align-items:center;gap:28px;
}
.cta h2{font-size:26px;color:#fff}
.cta p{color:#c9bfb1;font-size:14.5px;margin:8px 0 0;max-width:56ch}
.cta .btn{background:var(--accent);color:#fff}
.cta .btn:hover{background:#fff;color:var(--ink)}

/* 页脚 */
.site-foot{background:var(--dark);color:#cabfb0;margin-top:50px}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding:46px 0 34px}
.foot-brand strong{font-size:24px;color:#fff;letter-spacing:.02em}
.foot-brand p{font-size:13.5px;line-height:1.75;margin:10px 0 0;color:#a99e8f;max-width:34ch}
.social{display:flex;flex-wrap:wrap;gap:14px;margin-top:16px}
.social a{font-size:12.5px;color:#cbbfae;border-bottom:1px solid #4a4137;padding-bottom:1px}
.social a:hover{color:#fff;border-color:#fff}
.site-foot h3{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:12px}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin:0 0 8px}
.site-foot li a{font-size:13.5px;color:#a99e8f}
.site-foot li a:hover{color:#fff}
.foot-bottom{border-top:1px solid #332c25}
.foot-bottom .wrap{display:flex;justify-content:space-between;gap:16px;padding:16px 24px;font-size:12px;color:#8a8073;flex-wrap:wrap}

/* 响应式 */
@media(max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:26px}
  .hero h1{font-size:34px}
  .split{grid-template-columns:1fr;gap:24px}
  .grid-4,.people-grid{grid-template-columns:repeat(2,1fr)}
  .foot-top{grid-template-columns:1fr 1fr;gap:28px}
  .stat-band{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .wrap{padding:0 16px}
  .topbar .wrap{justify-content:flex-start;overflow-x:auto}
  .topbar nav{gap:14px}
  .tb-note{display:none}
  .head-main{padding:16px 0 14px;gap:12px}
  .brand-mark{width:44px;height:44px;font-size:17px}
  .brand-text strong{font-size:21px}
  .head-date{display:none}
  .mainnav a{padding:11px 12px;font-size:14px}
  .hero{padding:28px 0 20px}
  .hero h1{font-size:27px}
  .hero .lede{font-size:15px}
  .grid-3,.grid-2,.grid-4,.people-grid{grid-template-columns:1fr}
  .section-head h2{font-size:21px}
  .article{padding:20px 18px}
  .cta{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta h2{font-size:21px}
  .swap-row{grid-template-columns:1fr;gap:6px}
  .swap-arrow{transform:rotate(90deg);justify-self:start}
  .toc ol{columns:1}
  .foot-top{grid-template-columns:1fr;gap:24px;padding:32px 0}
  .foot-bottom .wrap{flex-direction:column;gap:6px}
}