:root{color-scheme:light;--bg: #ececf0;--neu-light: #fdfdfe;--neu-dark: #dcdce3;--surface: #ececf0;--surface-strong: #ececf0;--border: transparent;--text: #3d3e4c;--muted: #838496;--primary: #7b6cf6;--primary-strong: #6556db;--danger: #d94e4e;--neu-raised: 3px 3px 8px var(--neu-dark), -3px -3px 8px var(--neu-light);--neu-inset: inset 2px 2px 4px var(--neu-dark), inset -2px -2px 4px var(--neu-light);--neu-sm-raised: 1.5px 1.5px 4px var(--neu-dark), -1.5px -1.5px 4px var(--neu-light);--neu-sm-inset: inset 1px 1px 2px var(--neu-dark), inset -1px -1px 2px var(--neu-light);--radius-xl: 24px;--radius-lg: 18px;--radius-md: 16px;--radius-sm: 12px;--font-display: "Noto Serif SC", "PingFang SC", "Hiragino Sans GB", "STSong", serif;--font-body: "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", -apple-system, BlinkMacSystemFont, ui-sans-serif, system-ui, sans-serif;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px);--tap-min: 44px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{-webkit-text-size-adjust:100%;-webkit-overflow-scrolling:touch}html,body,#root{min-height:100%}body{margin:0;color:var(--text);font-family:var(--font-body);background:var(--bg);-webkit-font-smoothing:antialiased;overscroll-behavior:none}body:before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.4;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.5'/%3E%3C/svg%3E");background-repeat:repeat;background-size:128px 128px}button,input,select,textarea{font:inherit}button{cursor:pointer;touch-action:manipulation}button:disabled{cursor:not-allowed;opacity:.5}.app-shell{position:relative;z-index:1;max-width:480px;margin:0 auto;padding:calc(16px + var(--safe-top)) max(16px,var(--safe-left)) calc(104px + var(--safe-bottom)) max(16px,var(--safe-right))}.topbar{margin-bottom:16px;padding-top:0}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:10px;color:var(--primary);font-weight:600;opacity:.8}.topbar h1{margin:4px 0 0;font-family:var(--font-display);font-size:28px;font-weight:600;line-height:1.2;letter-spacing:.02em}.topbar p{margin:4px 0 0;color:var(--muted);font-size:12px}.topbar-copy{min-width:0}.topbar-spacer{display:none}.tabs{position:fixed;left:max(12px,var(--safe-left));right:max(12px,var(--safe-right));bottom:calc(12px + var(--safe-bottom));z-index:20;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;padding:6px;border-radius:22px;background:var(--bg);box-shadow:var(--neu-raised)}.tab{border:0;background:transparent;border-radius:18px;padding:8px 4px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:var(--muted);min-height:48px;font-size:11px;white-space:nowrap;transition:box-shadow .3s,color .3s}.tab.active{background:var(--bg);box-shadow:var(--neu-inset);color:var(--primary)}.tab.active span{color:var(--primary)}.tab span:first-child{font-size:18px;line-height:1}.content{display:flex;flex-direction:column;gap:16px;min-height:auto;animation:fadeUp .4s ease-out}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.grid-2,.stack{display:flex;flex-direction:column;gap:16px}.panel{background:var(--bg);border:none;border-radius:var(--radius-xl);box-shadow:var(--neu-raised);padding:20px}.hero{position:relative;overflow:hidden}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}.panel-head h2{margin:0;font-family:var(--font-display);font-size:18px;font-weight:600}.panel-head p{margin:2px 0 0;color:var(--muted);font-size:12px}.cards{display:flex;flex-direction:column;gap:12px}.mini-card,.sub-card,.stat{border:none;background:var(--bg);border-radius:var(--radius-md);box-shadow:var(--neu-sm-raised)}.day{border:1px solid transparent;background:transparent;border-radius:var(--radius-sm);box-shadow:none}.mini-card,.sub-card{padding:14px}.mini-card{text-align:left;width:100%;cursor:pointer;transition:box-shadow .25s,transform .2s}.mini-card:hover{transform:translateY(-1px)}.mini-card.active{background:var(--bg);box-shadow:var(--neu-inset)}.mini-card-title{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}.mini-card-title strong{font-size:15px;margin:0;color:var(--text);font-weight:600}.mini-card-title span{color:var(--muted);font-size:12px;white-space:nowrap;margin:0}.row{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--muted)}.row-stack{display:flex;flex-direction:column;align-items:stretch;gap:10px}.form-grid{display:flex;flex-direction:column;gap:12px;margin-bottom:14px}.form-grid label,.inline-label{display:flex;flex-direction:column;gap:5px}.form-grid label span,.inline-label span{font-size:13px;color:var(--muted)}input,select,textarea{border:none;border-radius:14px;padding:12px 14px;background:var(--bg);color:var(--text);outline:none;font-size:15px;min-height:var(--tap-min);width:100%;-webkit-appearance:none;appearance:none;box-shadow:var(--neu-inset);transition:box-shadow .25s}select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b8c9a' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:34px}input:focus,select:focus,textarea:focus{box-shadow:var(--neu-inset)}textarea{resize:vertical;min-height:80px}.primary,.ghost,.seg{border:none;border-radius:14px;padding:12px 18px;font-size:15px;min-height:var(--tap-min);transition:opacity .2s,box-shadow .25s,transform .2s;white-space:nowrap}.primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-strong));box-shadow:0 2px 8px #7c6ff738,0 1px 2px #0000000d}.ghost,.seg{background:var(--bg);color:var(--text);box-shadow:var(--neu-sm-raised)}.ghost:active,.seg:active{box-shadow:var(--neu-sm-inset)}.danger{color:var(--danger)}.primary:active,.ghost:active,.seg:active,.tab:active,.mini-card:active{opacity:.85}.mini-card:active{box-shadow:var(--neu-inset)}.ghost:disabled{background:#ffffff80}.split-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:8px 0 12px;flex-wrap:wrap}.segmented{display:inline-flex;gap:3px;background:var(--bg);box-shadow:var(--neu-inset);padding:4px;border-radius:14px}.seg{padding:10px 16px;font-size:14px}.seg.active{background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;box-shadow:0 2px 6px #7c6ff733}.actions-row,.month-switch,.stats,.status-dots{display:flex;align-items:center}.actions-row,.month-switch{gap:8px;flex-wrap:wrap}.calendar{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:4px}.weekday{text-align:center;color:var(--muted);font-size:11px;font-weight:700;padding:6px 0 2px}.day{min-height:44px;padding:6px 4px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-align:center;color:var(--text);font-size:14px;border-radius:12px}.day.selected{background:#7c6ff71a;box-shadow:var(--neu-sm-inset)}.day.today{box-shadow:0 0 0 2px var(--primary)}.day.selected.today{background:#7c6ff71a;box-shadow:var(--neu-sm-inset),0 0 0 2px var(--primary)}.day span{font-weight:600;font-size:14px}.dots,.status-dots{display:inline-flex;gap:4px;align-items:center}.dot{width:7px;height:7px;border-radius:999px;display:inline-block;box-shadow:0 0 0 1.5px var(--neu-light)}.dot.purple{background:#8876f0}.dot.red{background:#e05555}.dot.blue{background:#5b7ff0}.dot.amber{background:#e09a3c}.report-table{width:100%;border-collapse:collapse;font-size:13px;white-space:nowrap}.report-table th,.report-table td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--border)}.report-table th{color:var(--muted);font-weight:500;font-size:12px;text-transform:none}.report-table tbody tr:hover{background:transparent;box-shadow:var(--neu-sm-inset)}.flash{border-radius:var(--radius-md);padding:12px 14px;margin:0 0 10px;border:none;font-size:14px;box-shadow:var(--neu-sm-raised)}.flash.success{background:var(--bg);color:var(--primary)}.flash.error{background:var(--bg);color:var(--danger)}.flash.info{background:var(--bg);color:#4a6cf7}.stats{gap:10px;flex-wrap:wrap;margin-bottom:12px}.stat{padding:14px 16px;min-width:100px;flex:1 1 auto}.stat span{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}.stat strong{font-family:var(--font-display);font-size:24px;font-weight:600;margin:0}.empty{padding:20px;border-radius:var(--radius-md);border:none;color:var(--muted);background:var(--bg);box-shadow:var(--neu-inset);text-align:center;font-size:14px;margin:0}.empty-action{margin-top:12px}.sheet-backdrop{position:fixed;inset:0;z-index:40;background:#1118274d;display:flex;align-items:flex-end;justify-content:center;padding:0;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.sheet{width:100%;max-width:480px;background:var(--bg);border-radius:22px 22px 0 0;box-shadow:0 -4px 20px #4a4b5a1a;border:none;padding:20px;padding-bottom:calc(20px + var(--safe-bottom));max-height:90vh;overflow-y:auto;animation:fadeUp .3s ease-out}.sheet-head{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;margin-bottom:14px}.sheet-head strong{text-align:center;font-size:17px}.full{width:100%}.field-hint{color:var(--muted);font-size:12px;line-height:1.4;margin-top:2px}.muted,.hint{color:var(--muted);font-size:13px;margin:0}.purchase-list{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.purchase-pill{display:inline-flex;gap:6px;align-items:center;flex-wrap:wrap;padding:6px 12px;border-radius:14px;background:var(--bg);box-shadow:var(--neu-sm-raised);color:var(--text);font-size:12px}.purchase-pill strong{font-size:12px}.course-groups{display:flex;flex-direction:column;gap:10px}.inline-label{display:flex;flex-direction:row;align-items:center;gap:8px}.inline-label span{white-space:nowrap}.student-row .mini-card-title{flex-wrap:wrap}.student-row{border:none;background:transparent;border-radius:0;box-shadow:none;padding:14px 0;border-bottom:1px solid rgba(0,0,0,.06)}.student-row:last-child{border-bottom:none;padding-bottom:0}.student-row:first-child{padding-top:0}.install-banner{position:fixed;left:max(12px,var(--safe-left));right:max(12px,var(--safe-right));bottom:calc(86px + var(--safe-bottom));z-index:19;background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;border-radius:var(--radius-lg);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;box-shadow:var(--neu-raised)}.install-banner button{background:#fff;color:var(--primary);border:0;border-radius:999px;padding:8px 16px;font-weight:600;font-size:13px;min-height:36px}@media(min-width:720px){.app-shell{max-width:1200px;padding:24px 24px 120px}.grid-2{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,1fr);gap:20px;align-items:start}.stack{display:flex;flex-direction:column;gap:20px}.content{gap:20px}.tabs{left:auto;right:auto;max-width:1200px;margin:0 24px;bottom:16px;gap:10px;padding:10px;border-radius:30px}.tab{padding:12px 10px;min-height:60px;font-size:12px}.panel{padding:24px}.calendar{gap:8px}.day{min-height:64px;padding:8px}.day span{font-size:16px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.topbar h1{font-family:var(--font-display);font-size:34px;font-weight:600}.sheet{border-radius:22px;padding:24px;max-width:480px}.panel-head h2{font-size:22px}}