:root{
  --bg:#f6f7fb; --card:#fff; --ink:#2a2f3a; --muted:#7a8394; --line:#eceff4;
  --brand:#4a7dff; --brand2:#3d6ae0; --ok:#22b07d; --warn:#ff9f1c; --bad:#ff5a5f;
  --radius:14px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font:15px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
a{color:var(--brand);text-decoration:none}
.container{max-width:720px;margin:0 auto;padding:12px 14px 70px}

/* 顶栏 */
.topbar{position:sticky;top:0;z-index:20;background:var(--brand);color:#fff;box-shadow:0 2px 8px rgba(0,0,0,.12)}
.topbar .inner{max-width:720px;margin:0 auto;display:flex;align-items:center;gap:10px;padding:10px 14px}
.brand{font-weight:700;font-size:17px;color:#fff}
.topbar .sp{flex:1}
.topbar a.top-link{color:#fff;opacity:.95;font-size:13px;padding:4px 8px;border-radius:8px}
.topbar a.top-link:hover{background:rgba(255,255,255,.18)}
.notice-dot{background:var(--warn);border-radius:50%;display:inline-block;min-width:8px;height:8px;margin-left:2px}

/* 页头动作 */
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.row .sp{flex:1}
.pagehead{margin:14px 0 10px}
h1,h2,h3{line-height:1.3}
h1{font-size:21px;margin:4px 0}
h2{font-size:17px;margin:6px 0}
.muted{color:var(--muted);font-size:13px}
.small{font-size:12px}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin:10px 0;box-shadow:0 1px 2px rgba(20,25,40,.04)}
.card h3{margin:0 0 8px;font-size:16px}
.subhead{font-size:12px;color:var(--muted);letter-spacing:.3px;display:flex;gap:6px;align-items:center;margin:14px 0 4px;font-weight:600}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:12px;padding:11px 16px;font-size:15px;font-weight:600;cursor:pointer;background:#edf1fb;color:var(--brand2)}
.btn.primary{background:var(--brand);color:#fff;width:100%;padding:13px}
.btn.big{width:100%;padding:13px;font-size:16px}
.btn.ok{background:var(--ok);color:#fff}
.btn.warn{background:var(--warn);color:#fff}
.btn.bad{background:#ffe9ea;color:var(--bad)}
.btn.small{padding:6px 10px;font-size:13px;border-radius:9px}
.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn:disabled{opacity:.5;pointer-events:none}
.btn-row{display:flex;gap:8px;margin-top:10px}
.btn-row .btn{flex:1}

/* 表单 */
label.lb{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px;font-weight:600}
input[type=text],input[type=password],input[type=number],input[type=time],input[type=date],input[type=datetime-local],select,textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:15px;background:#fff;color:var(--ink);outline:none}
textarea{min-height:130px;line-height:1.55;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--brand)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:7px 12px;font-size:14px;cursor:pointer;user-select:none}
.chip.on{border-color:var(--brand);background:var(--brand);color:#fff;font-weight:600}

/* 科目色 */
.c0{--sc:#4a7dff}.c1{--sc:#ff8f3c}.c2{--sc:#22b07d}.c3{--sc:#16a3b8}.c4{--sc:#b16df0}.c5{--sc:#8a94a6}
.tag{display:inline-block;border-radius:8px;padding:1px 9px;font-size:12px;color:#fff;background:var(--sc,#8a94a6);font-weight:600}
.item-title{font-weight:600}
.item-meta{font-size:12px;color:var(--muted);margin-top:2px}

/* 状态色 */
.st-assigned{color:var(--muted)}
.st-chosen{color:var(--brand2);font-weight:600}
.st-skipped{color:var(--muted);text-decoration:line-through}
.st-scheduled{color:var(--muted)}
.st-running{color:var(--ok);font-weight:700}
.st-done{color:var(--ok)}
.st-cancelled{color:var(--bad)}

/* 消息提示 */
.msg{padding:10px 12px;border-radius:10px;margin:8px 0;font-size:14px}
.msg.ok{background:#e8f8f0;color:#14785a}
.msg.err{background:#ffeded;color:#c2393d}
.msg.info{background:#eef3ff;color:#3355b8}

/* 时间行 */
.ts{font-variant-numeric:tabular-nums;font-weight:600}

/* AI 状态 */
.ai-ok{background:#e8f8f0;color:#14785a}
.ai-bad{background:#fff3df;color:#a96a00}
.ai-banner{background:var(--warn);color:#fff;text-align:center;padding:7px 12px;font-size:13px}

/* 列表 */
.kv{display:flex;gap:8px;justify-content:space-between;padding:7px 0;border-bottom:1px dashed var(--line);font-size:14px}
.kv:last-child{border-bottom:0}
.kv b{text-align:right;color:var(--ink)}

.details{font-size:13px;color:var(--muted);margin-top:4px}
details.raw summary{cursor:pointer;color:var(--muted);font-size:12px;padding:2px 0}
details.raw .rawtext{white-space:pre-wrap;background:#fafbfd;border:1px dashed var(--line);border-radius:8px;padding:8px;margin-top:4px;font-size:13px}

footer.note{text-align:center;color:#b6bcc9;font-size:12px;margin-top:18px}
.hero{padding:26px 6px 10px}
.hero .logo{font-size:42px}
.tabbar{display:flex;background:#fff;border:1px solid var(--line);border-radius:12px;padding:3px;margin:8px 0}
.tabbar a{flex:1;text-align:center;padding:8px;border-radius:9px;color:var(--muted);font-weight:600;font-size:14px}
.tabbar a.on{background:var(--brand);color:#fff}

/* 打卡大字卡片 */
.clockcard{display:flex;flex-direction:column;gap:10px}
.clockcard .t{font-size:18px;font-weight:700;line-height:1.35}
.clock-timer{font-size:34px;font-weight:800;letter-spacing:1px;font-variant-numeric:tabular-nums}
.dayswitch{display:flex;justify-content:space-between;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px 10px}
.dayswitch b{font-size:15px}

input.inline{width:auto}

/* 右上角个人头像（姓名首字）+ 下拉菜单 */
.ava-wrap{position:relative;display:inline-flex}
.ava{width:30px;height:30px;border-radius:50%;border:0;padding:0;cursor:pointer;font-family:inherit;
  background:rgba(255,255,255,.22);color:#fff;font-weight:700;font-size:14px;line-height:30px;text-align:center}
.ava:hover{background:rgba(255,255,255,.34)}
.ava-menu{position:absolute;right:0;top:38px;min-width:154px;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:0 10px 26px rgba(20,25,40,.18);padding:6px;z-index:40;text-align:left}
.ava-menu[hidden]{display:none}
.ava-menu a{display:block;padding:9px 12px;border-radius:9px;color:var(--ink);font-size:14px;font-weight:600}
.ava-menu a:hover{background:#f1f5ff}