/* tiny77.cn 设计系统 · 2026-10-22
   明色参考：#E5DFC9 #E3D8B8 #5D6C24 #C0935F #82906D
   暗色参考：#0F1A3A #2B3B6E #425484 #ADA5A2 #BCBCBC
   默认跟随系统，可手动切换，偏好存 localStorage(tiny77-theme) */
:root{
  --bg:#E5DFC9; --surface:#F2ECDA; --surface-2:#E3D8B8;
  --border:#D6CBAA; --border-strong:#C9BC97;
  --text:#3B3A2C; --heading:#33401A; --muted:#82906D;
  --primary:#5D6C24; --primary-hover:#728434; --primary-soft:#5D6C2422;
  --accent:#C0935F; --accent-hover:#A97E4B;
  --icon-bg:#5D6C2414; --code-bg:#E3D8B8;
  --shadow:0 1px 3px rgba(90,80,40,.08),0 4px 14px rgba(90,80,40,.06);
  --serif:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
}
html[data-theme="dark"]{
  --bg:#252621; --surface:#2F302A; --surface-2:#3A3A31;
  --border:#5B5945; --border-strong:#6E6B54;
  --text:#FDEFCD; --heading:#FDEFCD; --muted:#978B6B;
  --primary:#B6A97B; --primary-hover:#CBBE94; --primary-soft:#B6A97B2e;
  --accent:#B6A97B; --accent-hover:#CBBE94;
  --icon-bg:#B6A97B1f; --code-bg:#3A3A31;
  --shadow:0 1px 3px rgba(0,0,0,.35),0 4px 14px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);line-height:1.7;
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-hover)}
h1,h2,h3,.serif{font-family:var(--serif);color:var(--heading)}

/* ---------- 布局 ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:220px;flex:0 0 auto;background:var(--surface);border-right:1px solid var(--border);
  padding:20px 14px;display:flex;flex-direction:column;gap:20px;position:sticky;top:0;height:100vh}
.logo{display:flex;align-items:center;gap:10px;padding:4px 8px}
.logo span{font-family:var(--serif);font-size:16px;font-weight:700;color:var(--heading)}
.logo svg rect{fill:var(--primary)}
.menu{display:flex;flex-direction:column;gap:4px}
.menu-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:6px;
  color:var(--text);font-size:14px}
.menu-item:hover{background:var(--primary-soft);color:var(--primary-hover)}
.menu-item.active{background:var(--primary-soft);color:var(--primary);font-weight:700}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.theme-btn{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:6px;
  border:1px solid var(--border);background:transparent;color:var(--text);font-size:13px;cursor:pointer}
.theme-btn:hover{border-color:var(--primary)}
.content{flex:1;min-width:0;padding:24px 28px 48px}
.header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.header h1{margin:0;font-size:22px;font-weight:600}
.badge{font-size:12px;color:var(--primary);background:var(--primary-soft);
  border:1px solid var(--border);padding:2px 10px;border-radius:999px}

/* ---------- Banner（/home） ---------- */
.banner{position:relative;border-radius:8px;overflow:hidden;box-shadow:var(--shadow);
  aspect-ratio:1000/300;margin-bottom:20px}
.slide{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;
  padding:0 8%;opacity:0;transition:opacity 1s;background:linear-gradient(135deg,var(--surface-2),var(--surface));
  border:1px solid var(--border)}
.slide.on{opacity:1}
.slide h2{margin:0 0 6px;font-size:26px;letter-spacing:.06em}
.slide p{margin:0;color:var(--muted);font-size:14px}
.slide .deco{position:absolute;right:6%;top:50%;transform:translateY(-50%);
  font-family:var(--serif);font-size:72px;color:var(--primary);opacity:.16;font-weight:700}
.banner-dots{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:flex;gap:8px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--border-strong);cursor:pointer;transition:.3s}
.dot.on{background:var(--accent);width:20px;border-radius:4px}

/* ---------- 双栏（/home） ---------- */
.duo{display:grid;grid-template-columns:minmax(0,1fr) 25%;gap:16px}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow)}
.panel-head{display:flex;align-items:center;justify-content:space-between;
  padding:12px 18px;border-bottom:1px solid var(--border)}
.panel-head h3{margin:0;font-size:16px}
.panel-head a{font-size:14px}
.panel-body{padding:16px 18px}
.subject-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.subject{border:1px solid var(--border);border-radius:6px;padding:14px;background:var(--surface-2);
  display:flex;gap:12px;align-items:flex-start;transition:.2s}
.subject:hover{border-color:var(--primary);transform:translateY(-2px)}
.subject .ab{flex:0 0 auto;width:40px;height:40px;border-radius:6px;background:var(--icon-bg);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:20px;font-weight:700}
.subject h4{margin:0 0 2px;font-size:15px;color:var(--heading)}
.subject p{margin:0;font-size:12.5px;color:var(--muted);line-height:1.5}
.feat-list{list-style:none;margin:0;padding:0}
.feat-list li{padding:10px 0;border-bottom:1px dashed var(--border)}
.feat-list li:last-child{border-bottom:none}
.feat-list .t{display:block;color:var(--text);font-size:14px}
.feat-list .t:hover{color:var(--primary-hover)}
.feat-list .d{font-size:12px;color:var(--muted)}

/* ---------- 工具栏 / Tabs（/skill） ---------- */
.toolbar{display:flex;gap:16px;align-items:center;justify-content:space-between;margin-bottom:16px}
.muted{color:var(--muted);opacity:.9;font-size:13px}
.search{flex:1;max-width:420px;padding:8px 14px;border:1px solid var(--border);border-radius:6px;
  background:var(--surface);color:var(--text);font-size:14px;outline:none}
.search:focus{border-color:var(--primary)}
.tabs{display:flex;gap:6px;margin-bottom:16px;border-bottom:1px solid var(--border);flex-wrap:wrap}
.tab{padding:6px 14px;font-size:14px;color:var(--text);cursor:pointer;border:none;background:none;
  border-bottom:2px solid transparent;margin-bottom:-1px}
.tab:hover{color:var(--primary-hover)}
.tab.active{color:var(--primary);font-weight:700;border-bottom-color:var(--primary)}
.sort-ctl{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.sort-ctl select{padding:6px 10px;border:1px solid var(--border);border-radius:6px;
  background:var(--surface);color:var(--text);font-size:13px;outline:none}

/* ---------- 技能卡网格 ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.skill-card{background:var(--surface);border:1px solid var(--border);border-radius:6px;
  box-shadow:var(--shadow);padding:16px;display:flex;flex-direction:column;min-height:220px;
  height:100%;transition:.2s}
.skill-card:hover{border-color:var(--primary);transform:translateY(-2px)}
.sc-head{display:flex;gap:12px;align-items:center}
.sc-icon{width:44px;height:44px;flex:0 0 auto;border-radius:8px;background:var(--icon-bg);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:20px;font-weight:700}
.sc-head h3{margin:0;font-size:16px}
.sc-desc{margin:12px 0;color:var(--muted);font-size:13px;min-height:60px}
.tags{display:flex;flex-wrap:wrap;gap:6px;min-height:28px;align-content:flex-start}
.tag{font-size:12px;color:var(--primary);background:var(--primary-soft);
  border:1px solid var(--border);border-radius:4px;padding:1px 8px}
.sc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;
  padding-top:10px;border-top:1px solid var(--border);font-size:12.5px;color:var(--muted)}
.like{border:none;background:none;color:var(--muted);cursor:pointer;font-size:12.5px;
  display:inline-flex;gap:4px;align-items:center;padding:2px 6px;border-radius:4px}
.like:hover{color:var(--accent-hover)}
.like.liked{color:var(--accent)}
.empty{grid-column:1/-1;text-align:center;color:var(--muted);padding:48px 0;font-size:14px}
.disclaimer{margin-top:24px;font-size:13px;color:var(--muted);opacity:.85}
.footer{margin-top:32px;text-align:center;font-size:12.5px;color:var(--muted)}

/* ---------- 响应式 ---------- */
@media (max-width:768px){
  .layout{flex-direction:column}
  .sidebar{width:100%;height:auto;position:static;flex-direction:row;align-items:center;
    gap:12px;padding:12px 14px;overflow-x:auto;border-right:none;border-bottom:1px solid var(--border)}
  .menu{flex-direction:row}
  .menu-item{white-space:nowrap;padding:8px 10px}
  .side-foot{margin-top:0;margin-left:auto}
  .theme-btn span{display:none}
  .content{padding:16px 14px 40px}
  .duo{grid-template-columns:1fr}
  .toolbar{flex-direction:column;align-items:stretch}
  .search{max-width:none}
  .banner{aspect-ratio:1000/420}
  .slide h2{font-size:20px}
}