/* 竹条实验中学论坛 — 界面样式
   设计基调：浅灰底 + 白色卡片 + 单一蓝色主色，圆角克制，玻璃质感只作轻量点缀 */
:root{
  --brand:#2a6cb5;
  --brand-d:#215a99;
  --brand-soft:rgba(42,108,181,.09);
  --ink:#1c2333;
  --text:#28313f;
  --muted:#6b7690;
  --line:#e4e9f1;
  --line-2:#d6dde8;
  --danger:#c8383d;
  --ok:#17836a;
  --gold:#a9761a;
  --warn:#a86a12;
  --radius:14px;
  --radius-sm:9px;
  --shadow:0 2px 10px rgba(24,39,75,.06);
  --shadow-lg:0 8px 24px rgba(24,39,75,.10);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  color:var(--text);
  background:#f2f5f9;
  min-height:100vh;overflow-x:hidden;
  font-size:15px;line-height:1.6;
}
.hidden{display:none !important}

/* 背景：两块很淡的静态色块，只为了让玻璃有东西可折射 */
.bg-blobs{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55}
.b1{width:44vw;height:44vw;background:#d5e0ef;top:-12vw;left:-12vw}
.b2{width:38vw;height:38vw;background:#e3e9f4;top:14vh;right:-14vw}
.b3{display:none}
.b4{display:none}

/* 玻璃卡片：轻磨砂，不做高光扫过 */
.glass{
  position:relative;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  border-radius:var(--radius);
}
.glass-shine{position:relative}

/* ---------- 登录注册 ---------- */
.auth-screen{position:relative;z-index:2;display:flex;justify-content:center;padding:26px 14px 40px;min-height:100vh}
.auth-card{width:100%;max-width:460px;padding:24px 20px 28px;border-radius:16px}
.auth-brand{text-align:center;margin-bottom:16px}
.brand-logo-img{width:44px;height:44px;display:block;margin:0 auto 8px}
.brand-title{font-size:22px;margin:0;font-weight:700;letter-spacing:.3px;color:var(--ink)}
.brand-sub{font-size:12.5px;color:var(--muted);letter-spacing:2px;margin-top:2px}
.seg{display:flex;gap:4px;background:#eef1f6;border-radius:10px;padding:4px;margin-bottom:18px}
.seg-btn{flex:1;border:0;background:transparent;padding:9px 0;border-radius:8px;font-size:15px;color:var(--muted);font-weight:600;transition:.2s;font-family:inherit}
.seg-btn.active{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(24,39,75,.10)}
.auth-form{display:flex;flex-direction:column;gap:12px}
.row2{display:flex;gap:10px}
.row2 .field{flex:1}
.field{display:flex;flex-direction:column;gap:6px}
.field>span{font-size:12.5px;color:var(--muted)}
input,select,textarea{
  width:100%;font:inherit;color:var(--text);
  background:#fff;border:1px solid var(--line-2);
  border-radius:var(--radius-sm);padding:11px 13px;outline:none;transition:border-color .15s, box-shadow .15s;
}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
textarea{resize:vertical;min-height:104px;line-height:1.65}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8892a6 50%),linear-gradient(135deg,#8892a6 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.code-row{display:flex;gap:8px}
.code-row input{flex:1}
.btn{
  font:inherit;font-weight:600;border-radius:var(--radius-sm);padding:10px 16px;border:1px solid transparent;cursor:pointer;
  transition:background .15s,border-color .15s,color .15s;
}
.btn:active{transform:translateY(1px)}
.btn.big{width:100%;padding:13px;font-size:15.5px}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:active{background:var(--brand-d)}
.btn.ghost{background:#fff;border-color:var(--line-2);color:var(--brand)}
.btn.mini{padding:6px 12px;font-size:13px;border-radius:8px}
.btn.danger{background:#fff;border-color:#eec9ca;color:var(--danger)}
.btn:disabled{opacity:.55;pointer-events:none}
.or{text-align:center;color:var(--muted);font-size:12.5px;margin:2px 0}
.check{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--text);cursor:pointer;line-height:1.55}
.check input{display:none}
.check i{flex:0 0 17px;width:17px;height:17px;margin-top:2px;border-radius:4px;border:1.5px solid var(--line-2);background:#fff;position:relative;transition:.15s}
.check input:checked + i{background:var(--brand);border-color:var(--brand)}
.check input:checked + i::after{content:"";position:absolute;left:5.5px;top:2px;width:4px;height:9px;border-right:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(42deg)}
.link{color:var(--brand);font-weight:600;text-decoration:none;border-bottom:1px solid rgba(42,108,181,.35)}

/* ---------- 滑块验证码 ---------- */
.captcha{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px}
.cap-head{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted);margin-bottom:8px}
.cap-refresh{color:var(--brand);cursor:pointer}
.cap-stage{position:relative;width:100%;aspect-ratio:2/1;border-radius:var(--radius-sm);overflow:hidden;background:#eef2f8}
.cap-bg{width:100%;height:100%;display:block}
.cap-piece{position:absolute;top:0;left:0;width:18.67%;height:37.33%}
.cap-slider{
  margin-top:10px;position:relative;height:46px;border-radius:var(--radius-sm);
  background:#f3f6fa;border:1px solid var(--line);overflow:hidden;
  touch-action:none;-webkit-user-select:none;user-select:none;cursor:pointer;
}
.cap-fill{position:absolute;top:0;bottom:0;left:0;width:0;background:var(--brand-soft);border-right:1px solid rgba(42,108,181,.35)}
.cap-label{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:13px;color:#9aa4b8;pointer-events:none}
.cap-knob{
  position:absolute;top:-1px;left:0;width:18.67%;height:calc(100% + 2px);border-radius:8px;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 2px 8px rgba(24,39,75,.18);touch-action:none;cursor:grab;
}
.cap-knob.dragging{background:var(--brand-d);cursor:grabbing}
.cap-knob.locked{background:var(--ok);cursor:default}
.cap-slider.locked{cursor:default}
.cap-slider.locked .cap-label{color:var(--ok);font-weight:600}
.cap-fill.locked{background:rgba(23,131,106,.10);border-right-color:rgba(23,131,106,.4)}
.cap-tip{font-size:12.5px;color:var(--muted);margin-top:8px;min-height:18px}
.cap-tip.ok{color:var(--ok)}
.cap-tip.err{color:var(--danger);cursor:pointer;text-decoration:underline}

/* ---------- 主界面 ---------- */
.app{position:relative;z-index:2;max-width:640px;margin:0 auto;padding:calc(env(safe-area-inset-top) + 10px) 12px 96px}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;position:sticky;top:calc(env(safe-area-inset-top) + 6px);z-index:20}
.site-title{font-size:18px;margin:0;font-weight:700;color:var(--ink);letter-spacing:.3px}
.site-sub{font-size:11.5px;color:var(--muted);letter-spacing:2px}
.bell{position:relative;border:1px solid var(--line);background:#fff;border-radius:10px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:var(--text);cursor:pointer}
.dot{position:absolute;top:-5px;right:-5px;min-width:16px;height:16px;padding:0 3px;border-radius:8px;background:var(--danger);color:#fff;font-size:10px;line-height:16px;text-align:center;font-weight:700;border:2px solid #fff}
.view{margin-top:14px;display:flex;flex-direction:column;gap:12px}

/* 底部导航 */
.tabbar{
  position:fixed;left:50%;transform:translateX(-50%);bottom:calc(env(safe-area-inset-bottom) + 12px);
  width:min(92vw,600px);display:flex;padding:6px;border-radius:16px;z-index:30;
}
.tab-blob{position:absolute;bottom:4px;left:6px;height:2px;width:calc((100% - 12px)/3);background:var(--brand);border-radius:2px;transition:transform .28s ease}
.tab{flex:1;position:relative;z-index:1;border:0;background:transparent;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11.5px;color:var(--muted);padding:7px 0 6px;cursor:pointer;font-family:inherit;transition:color .2s}
.tab.active{color:var(--brand);font-weight:700}

/* 卡片 */
.card{padding:16px;position:relative}
.card-t{font-size:15px;font-weight:700;margin:0 0 10px;display:flex;align-items:center;gap:8px;color:var(--ink)}
.card-t .sub{font-size:12px;font-weight:400;color:var(--muted)}

/* 首页通知区块 */
.ann-head{display:flex;align-items:center;justify-content:space-between;padding:0 2px 8px}
.ann-head h3{margin:0;font-size:15px;font-weight:700;color:var(--ink);padding-left:9px;border-left:3px solid var(--brand)}
.ann-scroll{display:flex;gap:10px;overflow-x:auto;padding:0 2px 6px;scroll-snap-type:x mandatory;scrollbar-width:none}
.ann-scroll::-webkit-scrollbar{display:none}
.ann-card{
  flex:0 0 84%;scroll-snap-align:center;padding:14px 16px;border-radius:var(--radius);cursor:pointer;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
}
.ann-tag{display:inline-block;font-size:11px;font-weight:600;color:var(--brand);background:var(--brand-soft);padding:2px 8px;border-radius:5px;margin-bottom:7px}
.ann-title{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:5px}
.ann-body{font-size:13.5px;color:#4a5464;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;white-space:pre-wrap}
.ann-meta{font-size:11.5px;color:var(--muted);margin-top:8px}

/* 免责声明 */
.warn-bar{
  display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:var(--radius);
  background:#fdf6e7;border:1px solid #ecdcb6;color:#7a5a1a;font-size:12.5px;line-height:1.65;
}
.warn-bar .em{width:18px;height:18px}
.warn-bar .more{color:var(--brand);font-weight:600;cursor:pointer;white-space:nowrap}

/* 发布入口 */
.publish-bar{display:flex;gap:10px;align-items:center;padding:12px 14px;border-radius:var(--radius)}
.publish-bar .go{flex:0 0 auto}
.pub-hint{flex:1;color:var(--muted);font-size:14px}

/* 帖子 */
.post{padding:15px;border-radius:var(--radius)}
.post-head{display:flex;gap:10px;align-items:flex-start}
.avatar{
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:700;color:#fff;font-size:16px;background:#54779f;cursor:pointer;position:relative;
}
.avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover;display:block}
.avatar .on{position:absolute;right:-1px;bottom:-1px;width:10px;height:10px;border-radius:50%;background:#1f9d55;border:2px solid #fff}
.u-line{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.u-name{font-weight:700;font-size:14.5px;cursor:pointer;color:var(--ink)}
.u-badge{font-size:10.5px;font-weight:600;padding:1px 6px;border-radius:5px;background:#f7e7bd;color:#8a6110}
.u-title{font-size:11px;color:#fff;background:var(--brand);padding:1px 7px;border-radius:5px;font-weight:600}
.u-meta{font-size:11.5px;color:var(--muted);margin-top:2px}
.post-body{margin-top:10px}
.post-topic{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:6px}
.post-text{font-size:14.5px;color:#333d4d;line-height:1.75;white-space:pre-wrap;word-break:break-word}
.post-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.ptag{font-size:11.5px;color:#54607a;background:#f4f6fa;border:1px solid var(--line);padding:2px 8px;border-radius:5px}
.ptag.pin{background:#f7e7bd;border-color:#e8d29b;color:#8a6110;font-weight:600}
.post-actions{display:flex;gap:6px;margin-top:12px}
.act{
  flex:1;display:flex;align-items:center;justify-content:center;gap:5px;border:1px solid var(--line);
  background:#fff;border-radius:8px;padding:7px 4px;font-size:12.5px;color:#5b6577;cursor:pointer;
  transition:.15s;font-family:inherit;
}
.act.on{color:var(--brand);border-color:rgba(42,108,181,.45);background:var(--brand-soft);font-weight:600}
.act.on.like{color:var(--danger);border-color:#eec9ca;background:#fdf1f1}

/* 评论 */
.cmt{display:flex;gap:9px;padding:11px 0;border-top:1px solid var(--line)}
.cmt:first-child{border-top:0}
.cmt .avatar{flex:0 0 32px;width:32px;height:32px;font-size:13px}
.cmt-body{flex:1;min-width:0}
.cmt-text{font-size:13.8px;line-height:1.7;white-space:pre-wrap;word-break:break-word}
.cmt-foot{display:flex;gap:12px;align-items:center;font-size:11.5px;color:var(--muted);margin-top:5px}
.cmt-foot .mini{background:none;border:0;color:inherit;font:inherit;cursor:pointer;padding:0;display:flex;align-items:center;gap:4px}
.cmt-foot .mini.on{color:var(--danger);font-weight:600}

/* 聊天 */
.chat-box{height:calc(100vh - 300px);min-height:280px;overflow-y:auto;padding:8px 2px;display:flex;flex-direction:column;gap:9px}
.msg-row{display:flex;gap:8px;align-items:flex-end;max-width:100%}
.msg-row.mine{justify-content:flex-end}
.msg-row .avatar.sm{flex:0 0 28px;width:28px;height:28px;font-size:12px}
.msg{max-width:78%;padding:8px 12px;border-radius:12px;font-size:14px;line-height:1.6;word-break:break-word;white-space:pre-wrap}
.msg.them{align-self:flex-start;background:#f2f5f9;border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.mine{align-self:flex-end;background:var(--brand);color:#fff;border-bottom-right-radius:4px}
.msg .t{display:block;font-size:10.5px;opacity:.72;margin-top:3px}
.msg-sys{align-self:center;font-size:12px;color:var(--muted);background:#f4f6fa;padding:4px 12px;border-radius:8px}
.chat-input{display:flex;gap:8px}
.conv{display:flex;gap:11px;align-items:center;padding:11px;border-radius:var(--radius-sm);background:#fff;border:1px solid var(--line);cursor:pointer;margin-bottom:8px}
.conv .txt{flex:1;min-width:0}
.conv .nm{font-size:14px;font-weight:700}
.conv .ls{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge{background:var(--danger);color:#fff;font-size:11px;min-width:18px;height:18px;line-height:18px;text-align:center;border-radius:9px;padding:0 5px;font-weight:600}

/* 个人中心 */
.profile-top{display:flex;gap:13px;align-items:center}
.profile-top .avatar{flex:0 0 56px;width:56px;height:56px;font-size:22px}
.stat-row{display:flex;gap:8px;margin-top:14px}
.stat{flex:1;text-align:center;background:#f7f9fc;border:1px solid var(--line);border-radius:10px;padding:9px 4px}
.stat b{display:block;font-size:16.5px;color:var(--ink)}
.stat span{font-size:11.5px;color:var(--muted)}
.task{display:flex;align-items:center;gap:10px;padding:10px 0;border-top:1px solid var(--line)}
.task:first-of-type{border-top:0}
.task .tt{flex:1}
.task .tt b{font-size:14px}
.task .tt div{font-size:12px;color:var(--muted)}
.pill{font-size:12px;font-weight:600;padding:4px 11px;border-radius:7px;background:var(--brand-soft);color:var(--brand);border:1px solid rgba(42,108,181,.22)}
.pill.done{background:#e9f5f1;color:var(--ok);border-color:#c6e5dc}
.pill.gold{background:#f7e7bd;color:#8a6110;border-color:#e8d29b}
.switch{width:46px;height:26px;border-radius:14px;background:#d7dde7;position:relative;cursor:pointer;transition:.2s;flex:0 0 auto}
.switch.on{background:var(--brand)}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(24,39,75,.25)}
.switch.on::after{left:23px}
.color-picker{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.swatch{width:28px;height:28px;border-radius:50%;cursor:pointer;border:2px solid #fff;box-shadow:0 0 0 1px var(--line-2)}
.swatch.sel{box-shadow:0 0 0 2px var(--brand)}
.list-row{display:flex;align-items:center;gap:10px;padding:11px 0;border-top:1px solid var(--line)}
.list-row:first-child{border-top:0}
.list-row .avatar{flex:0 0 36px;width:36px;height:36px;font-size:14px}
.list-row .nm{flex:1;font-size:14px;font-weight:600}
.list-row .nm small{display:block;color:var(--muted);font-weight:400;font-size:11.5px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.chip{font-size:12.5px;padding:6px 13px;border-radius:8px;background:#fff;border:1px solid var(--line-2);cursor:pointer;color:#54607a}
.chip.on{background:var(--brand);color:#fff;border-color:var(--brand);font-weight:600}
.empty{text-align:center;color:var(--muted);font-size:13px;padding:26px 0}
.muted{color:var(--muted)}
.small{font-size:12px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* 弹层 */
.sheet-wrap{position:fixed;inset:0;z-index:60;display:flex;align-items:flex-end;justify-content:center}
.sheet-mask{position:absolute;inset:0;background:rgba(20,28,48,.34);animation:fade .2s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.sheet{
  position:relative;width:min(96vw,620px);max-height:88vh;overflow-y:auto;padding:20px 18px calc(env(safe-area-inset-bottom) + 22px);
  border-radius:16px 16px 0 0;background:#fff;border:1px solid var(--line);border-top:none;box-shadow:var(--shadow-lg);
  animation:up .26s ease;
}
@keyframes up{from{transform:translateY(30px);opacity:.5}to{transform:translateY(0);opacity:1}}
.sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.sheet-head h3{margin:0;font-size:17px;color:var(--ink)}
.x{border:1px solid var(--line);background:#fff;border-radius:8px;width:32px;height:32px;font-size:16px;cursor:pointer;color:var(--muted)}
.doc{font-size:13.8px;line-height:1.85;color:#333d50;white-space:pre-wrap}

/* toast */
.toast-wrap{position:fixed;left:0;right:0;top:calc(env(safe-area-inset-top) + 14px);z-index:99;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none}
.toast{
  background:rgba(28,35,51,.92);color:#fff;font-size:13.5px;padding:9px 16px;border-radius:9px;
  max-width:88vw;text-align:center;animation:tin .22s ease;box-shadow:0 6px 18px rgba(10,20,40,.25)
}
.toast.ok{background:rgba(18,110,90,.94)}
.toast.err{background:rgba(178,48,52,.94)}
@keyframes tin{from{transform:translateY(-10px);opacity:0}to{transform:translateY(0);opacity:1}}

.loading{text-align:center;color:var(--muted);font-size:13px;padding:16px}

/* 图片图标 */
.em{width:1.1em;height:1.1em;vertical-align:-.2em;object-fit:contain;display:inline-block}
.em-lg{width:20px;height:20px;vertical-align:-.3em}
.em-btn{width:16px;height:16px;vertical-align:-.2em;margin-right:2px;opacity:.85}
.act.on .em-btn{opacity:1}

/* 管理区 */
.adm-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:10px}
.adm-kpi{background:#f7f9fc;border:1px solid var(--line);border-radius:10px;padding:12px}
.adm-kpi b{display:block;font-size:21px;color:var(--ink);line-height:1.3}
.adm-kpi span{font-size:12px;color:var(--muted)}
.scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -4px;padding:0 4px}
.tbl{width:100%;border-collapse:collapse;font-size:13px;white-space:nowrap}
.tbl th,.tbl td{text-align:left;padding:8px 8px 8px 0;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{font-size:12px;color:var(--muted);font-weight:600}
.tbl td.wrap{white-space:normal;max-width:220px;color:#4a5464}
.adm-acts{display:flex;gap:6px;flex-wrap:wrap}
.mini-tag{font-size:11px;padding:1px 7px;border-radius:5px;background:var(--brand-soft);color:var(--brand);display:inline-block}
.mini-tag.red{background:#fdf1f1;color:var(--danger)}
.mini-tag.green{background:#e9f5f1;color:var(--ok)}
.mini-tag.gold{background:#f7e7bd;color:#8a6110}
.ta-sm{min-height:80px;font-size:13px}
@media (max-width:400px){ .ann-card{flex:0 0 92%} .site-title{font-size:16.5px} }