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.page{max-width:900px;--page-pad: 22px}.grid-2,.grid-3,.masonry{grid-template-columns:repeat(2,minmax(0,1fr))}.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.bottom-nav{left:50%;right:auto;transform:translate(-50%);width:min(680px,100%);border-left:1px solid var(--line);border-right:1px solid var(--line);border-radius:14px 14px 0 0;box-shadow:0 -2px 14px #2c33400f}.bottom-nav a{font-size:12px;min-height:52px}.overlay{align-items:center;padding:28px}.modal{max-width:680px;max-height:86vh;border-radius:var(--r-lg)}.toast-wrap{bottom:84px}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.update-bar{display:flex;align-items:center;gap:10px;padding:9px 20px;background:var(--primary-soft);border-bottom:1px solid var(--line);color:var(--primary-text);font-size:13.5px}.update-bar-text{flex:1;min-width:0}.update-bar .btn{flex:0 0 auto}@media (max-width: 1023px){.update-bar{padding:8px 14px}.update-bar-text{font-size:13px}}@media (display-mode: standalone){.bottom-nav{padding-bottom:calc(6px + env(safe-area-inset-bottom,0px))}}.hw-page{--hw-radius: 14px}.hw-hero{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 20px;border-radius:16px;border:1px solid var(--primary-mid);background:var(--primary-soft);box-shadow:var(--shadow)}.hw-hero-left{display:flex;align-items:center;gap:14px;min-width:0}.hw-hero-num{font-size:40px;font-weight:800;line-height:1;color:var(--primary-text);font-variant-numeric:tabular-nums;white-space:nowrap;flex:0 0 auto}.hw-hero-num span{font-size:14px;font-weight:600;margin-left:3px;color:var(--ink-3)}.hw-hero-title{font-size:16px;font-weight:700}.hw-hero-sub{font-size:13px;color:var(--ink-2);margin-top:3px}.hw-hero-right{flex:0 0 auto;text-align:center}.hw-ring{position:relative;width:64px;height:64px;border-radius:50%;background:conic-gradient(var(--primary) var(--p, 0%),var(--surface-2) 0);box-shadow:inset 0 0 0 1px var(--line);display:grid;place-items:center}.hw-ring:after{content:"";position:absolute;top:7px;right:7px;bottom:7px;left:7px;border-radius:50%;background:var(--surface)}.hw-ring span{position:relative;z-index:1;font-size:13px;font-weight:700;color:var(--primary-text)}.hw-toolbar{display:flex;flex-direction:column;gap:12px}.hw-progress{border-top:1px solid var(--line);padding-top:10px}.hw-bar{height:6px;border-radius:99px;background:var(--surface-2);overflow:hidden}.hw-bar i{display:block;height:100%;border-radius:99px;background:var(--primary);transition:width .25s ease}.hw-overdue{border-color:var(--warning-mid, var(--line));background:var(--warning-soft)}.hw-board{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(256px,1fr));align-items:start}.hw-board-parent{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.hw-col{--hw: var(--primary);background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--hw);border-radius:var(--hw-radius);overflow:hidden;box-shadow:var(--shadow)}.hw-col-head{display:flex;align-items:center;gap:8px;padding:10px 14px;font-weight:700;font-size:14.5px;color:var(--ink);border-bottom:1px solid var(--line);background:var(--surface-2)}.hw-dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto;background:var(--hw)}.hw-subject{letter-spacing:.3px}.hw-count{margin-left:auto;font-size:12px;font-weight:650;color:var(--hw);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:1px 8px;font-variant-numeric:tabular-nums}.hw-col-body{display:flex;flex-direction:column}.hw-item{display:flex;align-items:flex-start;gap:10px;padding:12px;border-bottom:1px solid var(--line);transition:background .15s}.hw-item:last-child{border-bottom:none}.hw-item:hover{background:var(--surface-2)}.hw-item.overdue{background:var(--warning-soft)}.hw-item.done{background:transparent}.hw-item.done .hw-content{color:var(--ink-3);text-decoration:line-through;text-decoration-thickness:1px}.hw-item.done .hw-thumbs{opacity:.55}.hw-check{flex:0 0 auto;position:relative;width:24px;height:24px;margin:6px 4px 0 2px;border-radius:7px;border:2px solid var(--line-strong);background:var(--surface);color:var(--on-primary);font-size:14px;line-height:1;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background .15s,border-color .15s,transform .1s;touch-action:manipulation}.hw-check:active{transform:scale(.92)}.hw-check:before{content:"";position:absolute;width:44px;height:44px;margin:-10px}.hw-check.on{background:var(--success, #3f9e5c);border-color:var(--success, #3f9e5c)}.hw-item-body{flex:1;min-width:0}.hw-content{line-height:1.65;white-space:pre-wrap;word-break:break-word}.hw-thumbs{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.hw-thumb{position:relative;width:56px;height:56px;border-radius:8px;overflow:hidden;border:1px solid var(--line);background:var(--surface-2);display:inline-flex;align-items:center;justify-content:center;padding:0;cursor:pointer}.hw-thumb img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block}.hw-meta{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:7px}.hw-meta:empty{display:none}.hw-chip{display:inline-flex;align-items:center;gap:3px;padding:1px 8px;border-radius:999px;font-size:12px;line-height:19px;background:var(--surface-2);color:var(--ink-2);border:1px solid transparent;white-space:nowrap}.hw-chip.time{background:var(--primary-soft);color:var(--primary-text);font-weight:650}.hw-chip.tag{background:var(--surface-2);color:var(--ink-3)}.hw-chip.remind{background:var(--warning-soft);color:var(--warning-text)}.hw-chip.danger{background:var(--danger-soft);color:var(--danger-text)}.hw-date{font-size:12px;color:var(--ink-3)}.hw-actions{display:flex;gap:2px;flex:0 0 auto}.hw-actions .icon-btn{width:34px;height:34px;font-size:16px;color:var(--ink-2);border:1px solid var(--line);border-radius:9px;background:var(--surface)}.hw-actions .icon-btn:hover{border-color:var(--primary-mid);color:var(--primary-text)}.hw-est{border:1px dashed var(--line-strong);border-radius:12px;padding:12px 14px;background:var(--surface-2);transition:background .2s,border-color .2s}.hw-est.filled{border-style:solid;border-color:var(--primary-mid);background:var(--primary-soft)}.hw-est-ico{font-size:18px;line-height:1}.hw-est-title{font-weight:650;font-size:14px}.hw-est-src{font-size:11.5px;color:var(--ink-3);border:1px solid var(--line);border-radius:999px;padding:1px 8px;background:var(--surface)}.hw-est-src.manual{color:var(--primary-text);border-color:var(--primary-mid)}.hw-min{min-height:32px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:13px;cursor:pointer;touch-action:manipulation}.hw-min.on{background:var(--primary);color:var(--on-primary);border-color:var(--primary);font-weight:650}.hw-min.ghost{border-style:dashed;color:var(--ink-3)}.hw-remind-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.hw-switch{display:inline-flex;align-items:center;gap:7px;font-size:14px;cursor:pointer;min-height:44px}.hw-switch input{width:18px;height:18px;accent-color:var(--primary)}@media (max-width: 1023px){.hw-board,.hw-board-parent{grid-template-columns:minmax(0,1fr)}.hw-hero{padding:14px 16px}.hw-hero-num{font-size:34px}.hw-item{padding:12px}.shell.student .hw-check{width:28px;height:28px;border-radius:8px;font-size:16px}.shell.student .hw-content{font-size:15.5px}.hw-thumb{width:64px;height:64px}}.bottom-nav a{position:relative}.nav-badge{position:absolute;top:2px;left:50%;transform:translate(7px);min-width:17px;height:17px;padding:0 5px;border-radius:99px;background:var(--danger);color:var(--on-danger);font-size:10.5px;line-height:17px;font-weight:700;font-style:normal;text-align:center;box-shadow:0 0 0 2px var(--surface);pointer-events:none}.nav-badge.side{position:static;transform:none;margin-left:auto;height:18px;line-height:18px;box-shadow:none}.hw-hero-num.urgent{color:var(--danger-text)}.danger-num{color:var(--danger-text);font-weight:700}@media (max-width: 1023px){.bottom-nav{transition:transform .24s ease}.bottom-nav.hide{transform:translateY(112%)}}@media (prefers-reduced-motion: reduce){.bottom-nav{transition:none}}.hw-item.selected{background:var(--primary-soft);box-shadow:inset 3px 0 0 var(--primary)}.hw-check.pick.on{background:var(--primary);border-color:var(--primary)}.hw-chip.kp{background:var(--surface-2);color:var(--ink-2)}.hw-practice{margin-top:8px;width:100%;min-height:38px;border-radius:10px;border:1px dashed var(--primary-mid);background:var(--primary-soft);color:var(--primary-text);font-size:13.5px;font-weight:600;cursor:pointer;touch-action:manipulation}.hw-practice:active{opacity:.85}.hw-bulkbar{position:fixed;z-index:35;left:264px;right:24px;bottom:18px;max-width:900px;margin:0 auto;padding:10px 14px;border-radius:14px;border:1px solid var(--line);background:var(--surface);box-shadow:0 10px 24px #2c334029}.hw-link{margin-left:10px;border:none;background:none;padding:0;color:var(--primary-text);font-size:13px;cursor:pointer;text-decoration:underline}@media (max-width: 1023px){.hw-bulkbar{left:12px;right:12px;bottom:calc(66px + env(safe-area-inset-bottom));padding:8px 12px}body:has(.bottom-nav.hide) .hw-bulkbar{bottom:calc(12px + env(safe-area-inset-bottom))}}.hw-page.bulk-on{padding-bottom:96px}@media (max-width: 1023px){.hw-page.bulk-on{padding-bottom:170px}}.hw-tabs{display:flex;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}.hw-tabs::-webkit-scrollbar{display:none}.hw-tabs .seg{flex:0 0 auto}.hw-chip.due-soon{background:var(--danger-soft);color:var(--danger-text);font-weight:650}