:root{
  --bg:#f3f4f6; --card:#ffffff; --ink:#1f2937; --sub:#6b7280;
  --line:#e5e7eb; --brand:#fe6e00; --brand-d:#e25400;
  --hot:#fb2c36; --ext:#0d542b; --soon:#f59e0b;
  --navbg:rgba(255,255,255,.8); --shadow:0 1px 3px rgba(0,0,0,.05),0 8px 24px rgba(0,0,0,.04);
}
html.dark :root{
  --bg:#0b0d12; --card:#161922; --ink:#e8eaed; --sub:#9aa3b2;
  --line:#262b36; --brand:#ff8b1a; --brand-d:#fe6e00;
  --hot:#ff5a5f; --ext:#34d399; --soon:#f59e0b;
  --navbg:rgba(11,13,18,.8); --shadow:0 1px 3px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.3);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b0d12; --card:#161922; --ink:#e8eaed; --sub:#9aa3b2;
    --line:#262b36; --brand:#ff8b1a; --brand-d:#fe6e00;
    --hot:#ff5a5f; --ext:#34d399; --soon:#f59e0b;
    --navbg:rgba(11,13,18,.8); --shadow:0 1px 3px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.3);
  }
}
html.light :root{
  --bg:#f3f4f6; --card:#ffffff; --ink:#1f2937; --sub:#6b7280;
  --line:#e5e7eb; --brand:#fe6e00; --brand-d:#e25400;
  --hot:#fb2c36; --ext:#0d542b; --soon:#f59e0b;
  --navbg:rgba(255,255,255,.8); --shadow:0 1px 3px rgba(0,0,0,.05),0 8px 24px rgba(0,0,0,.04);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
[hidden]{display:none!important}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
button{font-family:inherit;cursor:pointer}

/* 吸顶毛玻璃导航 */
.nav{position:sticky;top:0;z-index:40;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  background:var(--navbg);border-bottom:1px solid var(--line)}
.nav .row{max-width:1080px;margin:0 auto;height:56px;display:flex;align-items:center;gap:10px;padding:0 16px}
.nav .logo{font-weight:800;font-size:17px}
.nav .logo .dot{color:var(--brand)}

/* 顶部右侧操作区 */
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.act-btn{border:1px solid var(--line);background:var(--card);color:var(--ink);padding:6px 12px;border-radius:10px;font-size:13px;transition:.15s;display:flex;align-items:center;gap:5px}
.act-btn:hover{border-color:var(--brand);color:var(--brand)}
.act-btn.theme{padding:6px 9px;font-size:15px}
.act-btn.donate{color:var(--hot);border-color:color-mix(in srgb,var(--hot) 30%,var(--line))}
.act-btn.donate:hover{background:color-mix(in srgb,var(--hot) 8%,transparent)}
.act-btn.login{background:transparent;border-color:transparent}
.act-btn.register{background:var(--brand);color:#fff;border-color:var(--brand);font-weight:600;padding:6px 14px}
.act-btn.register:hover{background:var(--brand-d);border-color:var(--brand-d);color:#fff}

/* Hero */
.hero{text-align:center;padding:40px 16px 22px}
.hero h1{font-size:28px;font-weight:800}
.hero p{margin-top:10px;color:var(--sub);font-size:15px}
.search{margin:20px auto 0;max-width:520px;display:flex;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.search input{flex:1;border:0;outline:0;background:transparent;color:var(--ink);padding:13px 18px;font-size:15px}
.search button{border:0;background:var(--brand);color:#fff;padding:0 22px;font-size:15px;font-weight:600}

.notice{background:color-mix(in srgb,var(--brand) 12%,transparent);color:var(--brand-d);font-size:13px;text-align:center;padding:9px 12px}

/* 左右布局：侧边栏 + 主内容 */
.layout{max-width:1080px;margin:0 auto;padding:0 16px 30px;display:grid;grid-template-columns:210px 1fr;gap:24px;align-items:start}
.sidebar{position:sticky;top:72px;height:fit-content}
.sidebar-title{font-size:14px;font-weight:700;color:var(--brand);margin-bottom:12px;padding-left:10px}
.side-menu{list-style:none;display:flex;flex-direction:column;gap:6px}
.side-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;cursor:pointer;color:var(--sub);font-size:14px;transition:.15s;border:1px solid transparent}
.side-item:hover{background:color-mix(in srgb,var(--brand) 8%,transparent);color:var(--brand);border-color:color-mix(in srgb,var(--brand) 20%,var(--line))}
.side-item.active{background:linear-gradient(135deg,var(--brand) 0%,var(--hot) 100%);color:#fff;border-color:transparent;box-shadow:0 6px 16px color-mix(in srgb,var(--brand) 30%,transparent)}
.side-item.hot{color:var(--hot)}
.side-item.hot.active{color:#fff}
.si-icon{font-size:18px;width:22px;text-align:center}
.si-name{flex:1}
.si-count{margin-left:auto;font-size:12px;font-weight:600;padding:2px 8px;border-radius:999px;background:color-mix(in srgb,var(--sub) 12%,transparent);color:var(--sub)}
.side-item.active .si-count{background:rgba(255,255,255,.25);color:#fff}

.sec-title{font-size:17px;font-weight:700;margin:28px 0 12px;display:flex;align-items:center;gap:8px}
.sec-title .cnt{font-size:13px;color:var(--sub);font-weight:400}

/* 紧凑卡片网格 */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:.18s;position:relative}
.card:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--brand) 50%,var(--line))}
.card .top{display:flex;align-items:center;gap:11px;margin-bottom:8px}
.card .ico{width:42px;height:42px;border-radius:11px;background:color-mix(in srgb,var(--brand) 12%,transparent);
  display:flex;align-items:center;justify-content:center;font-size:22px;flex:0 0 auto}
.card h3{font-size:15.5px;font-weight:700}
.card .badges{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0}
.badge{font-size:11px;padding:2px 8px;border-radius:6px;font-weight:600}
.b-hot{background:var(--hot);color:#fff}
.b-ext{background:color-mix(in srgb,var(--ext) 14%,transparent);color:var(--ext)}
.b-soon{background:#fef3c7;color:var(--soon)}
.b-tag{background:color-mix(in srgb,var(--brand) 14%,transparent);color:var(--brand-d)}
.card .desc{font-size:13px;color:var(--sub);flex:1}
.open{margin-top:10px;display:block;text-align:center;background:var(--brand);color:#fff;padding:9px 0;border-radius:10px;font-size:14px;font-weight:600}
.open.soon{background:var(--line);color:var(--sub);cursor:default}
.card.dim{opacity:.7}

.empty{text-align:center;color:var(--sub);padding:46px 0;font-size:15px;display:none}
footer{text-align:center;color:var(--sub);font-size:13px;padding:38px 0 28px;line-height:1.9}

/* 登录 / 注册弹窗 */
.modal-mask{position:fixed;inset:0;z-index:90;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;padding:16px}
.modal-mask.open{display:flex}
.modal{position:relative;width:min(380px,94vw);background:var(--card);border:1px solid var(--line);
  border-radius:18px;padding:26px 24px 22px;box-shadow:0 20px 60px rgba(0,0,0,.35);
  animation:pop .18s ease-out}
@keyframes pop{from{transform:translateY(12px) scale(.97);opacity:0}to{transform:none;opacity:1}}
.modal-x{position:absolute;top:12px;right:14px;border:0;background:transparent;color:var(--sub);
  font-size:18px;line-height:1;cursor:pointer;padding:4px}
.modal-x:hover{color:var(--ink)}
.modal-tabs{display:flex;gap:18px;margin-bottom:18px;border-bottom:1px solid var(--line);padding-bottom:10px}
.m-tab{font-size:17px;font-weight:700;color:var(--sub);cursor:pointer;padding-bottom:4px;position:relative}
.m-tab.active{color:var(--brand)}
.m-tab.active::after{content:"";position:absolute;left:0;right:0;bottom:-11px;height:2px;background:var(--brand);border-radius:2px}
.m-field{display:block;margin-bottom:14px}
.m-field span{display:block;font-size:13px;color:var(--sub);margin-bottom:6px}
.m-field input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;
  background:var(--bg);color:var(--ink);font-size:14px;outline:0;transition:.15s}
.m-field input:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 15%,transparent)}
.m-err{min-height:16px;font-size:12px;color:var(--hot);margin:-6px 0 8px}
.m-submit{width:100%;border:0;background:var(--brand);color:#fff;font-size:15px;font-weight:700;
  padding:12px 0;border-radius:11px;cursor:pointer;transition:.15s;letter-spacing:2px}
.m-submit:hover{background:var(--brand-d)}
.m-foot{text-align:center;font-size:13px;color:var(--sub);margin-top:14px}
.m-foot a{color:var(--brand);cursor:pointer;font-weight:600}
.user-name{font-size:14px;font-weight:600;color:var(--ink);align-self:center;margin-right:2px}
html.light .modal-mask{background:rgba(0,0,0,.45)}

@media(max-width:760px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:static;display:flex;gap:10px;overflow-x:auto;padding-bottom:4px}
  .sidebar-title{display:none}
  .side-menu{flex-direction:row;gap:8px;min-width:max-content;padding-bottom:6px}
  .side-item{padding:7px 12px;white-space:nowrap}
}
@media(max-width:520px){
  .hero h1{font-size:23px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:11px}
  .nav-actions .act-btn.donate span{display:none}
  .nav-actions{gap:7px}
  .act-btn{padding:5px 9px;font-size:12px}
}