:root{--ink:#211c33;--muted:#706a7e;--violet:#5d4ab3;--violet-dark:#32256f;--gold:#e8b24b;--green:#2f956a;--teal:#3f8d91;--coral:#d87961;--line:#e0d9eb;--shadow:0 24px 70px rgba(32,24,69,.14)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--ink);background:radial-gradient(circle at 5% 10%,rgba(232,178,75,.18),transparent 30%),radial-gradient(circle at 95% 8%,rgba(63,141,145,.17),transparent 29%),#f4f0e9;font-family:Georgia,"Noto Serif TC","Times New Roman",serif}.skip-link{position:fixed;top:-80px;left:16px;z-index:1000;padding:12px 18px;border-radius:12px;background:#fff;color:#111}.skip-link:focus{top:16px}.header-button,.connection-pill,.user-pill{display:inline-flex;align-items:center;min-height:38px;padding:0 14px;border:1px solid rgba(33,28,51,.13);border-radius:999px;background:#fff;color:var(--ink);font:750 13px system-ui,sans-serif;text-decoration:none}.connection-pill[data-state=online]{color:#116846;background:#ecfbf4}.connection-pill[data-state=error]{color:#a03535;background:#fff1f1}
.loading-card{max-width:620px;margin:12vh auto;padding:54px;text-align:center;border-radius:34px;background:rgba(255,255,255,.92);box-shadow:var(--shadow)}.loading-card>span{display:grid;place-content:center;width:70px;height:70px;margin:auto;border-radius:22px;background:var(--violet-dark);color:#fff;font-size:25px;font-weight:900}.loading-card h1{font-size:36px}.loading-card p{color:var(--muted);font:600 15px system-ui,sans-serif}
.dashboard-shell{max-width:1520px;margin:auto;padding:clamp(28px,4vw,64px)}.eyebrow{color:var(--violet);font:800 11px system-ui,sans-serif;letter-spacing:.2em;text-transform:uppercase}.dashboard-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;padding:clamp(32px,5vw,66px);border-radius:34px;color:#fff;background:linear-gradient(132deg,#211938,#403178 48%,#426f70);box-shadow:var(--shadow)}.dashboard-hero .eyebrow{color:#e8e0ff}.dashboard-hero h1{margin:16px 0;font-size:clamp(44px,6vw,82px);line-height:1}.dashboard-hero p{margin:0;color:rgba(255,255,255,.76);font:600 clamp(15px,1.3vw,19px)/1.6 system-ui,sans-serif}.hero-total{display:grid;place-content:center;width:150px;aspect-ratio:1;border:1px solid rgba(255,255,255,.24);border-radius:50%;background:rgba(255,255,255,.1);text-align:center}.hero-total strong{font-size:47px}.hero-total span{color:rgba(255,255,255,.73);font:800 12px system-ui,sans-serif}
.summary-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:12px;margin:22px 0}.summary-grid article{min-width:0;padding:20px;border:1px solid rgba(51,39,100,.1);border-radius:20px;background:rgba(255,255,255,.88);box-shadow:0 10px 28px rgba(32,24,69,.06)}.summary-grid article:nth-child(1){background:linear-gradient(145deg,#fff,#f3efff)}.summary-grid article:nth-child(2){background:linear-gradient(145deg,#fff,#edf9f3)}.summary-grid article:nth-child(3){background:linear-gradient(145deg,#fff,#fff5d9)}.summary-grid article:nth-child(4){background:linear-gradient(145deg,#fff,#ffefe9)}.summary-grid article:nth-child(5){background:linear-gradient(145deg,#fff,#eaf7f8)}.summary-grid article:nth-child(6){background:linear-gradient(145deg,#fff,#fff1f5)}.summary-grid article:nth-child(7){background:linear-gradient(145deg,#fff,#ecf8ef)}.summary-grid span,.summary-grid small{display:block;color:var(--muted);font:750 11px/1.3 system-ui,sans-serif}.summary-grid strong{display:block;margin:10px 0 4px;color:var(--violet-dark);font:900 clamp(23px,2.4vw,37px)/1 system-ui,sans-serif;font-variant-numeric:tabular-nums}
.analytics-panel{padding:clamp(22px,3.3vw,42px);border:1px solid rgba(255,255,255,.96);border-top:5px solid #6a55bc;border-radius:30px;background:rgba(255,255,255,.91);box-shadow:var(--shadow)}.chart-panel{border-top-color:#dca637;background:linear-gradient(160deg,rgba(255,255,255,.97),rgba(255,249,234,.93))}.leaderboard-grid>.analytics-panel:first-child{border-top-color:#39946f;background:linear-gradient(155deg,#fff,#f0faf5)}.leaderboard-grid>.analytics-panel:last-child{border-top-color:var(--coral);background:linear-gradient(155deg,#fff,#fff2ed)}.completed-panel{margin:22px 0 52px;border-top-color:var(--teal);background:linear-gradient(155deg,#fff,#edf8f8)}.panel-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;padding-bottom:18px;border-bottom:1px solid var(--line)}.panel-heading h2{margin:7px 0 0;font-size:clamp(25px,3vw,38px)}.panel-heading p{margin:7px 0 0;color:var(--muted);font:650 12px/1.5 system-ui,sans-serif}
.period-controls{display:flex;gap:7px;flex-wrap:wrap}.period-controls button{padding:9px 13px;border:1px solid #d8d0e6;border-radius:999px;background:#fff;color:var(--violet-dark);font:800 12px system-ui,sans-serif;cursor:pointer}.period-controls button[aria-pressed=true]{border-color:var(--violet-dark);background:var(--violet-dark);color:#fff}.chart-wrap{overflow-x:auto;margin-top:18px}.chart-wrap svg{display:block;width:100%;min-width:620px;height:auto}.chart-grid{stroke:#e5dfec;stroke-width:1}.chart-axis{stroke:#756d88;stroke-width:2}.chart-label{fill:#766f84;font:600 11px system-ui,sans-serif}.chart-bar{fill:url(#barGradient)}.chart-value{fill:#32256f;font:800 11px system-ui,sans-serif}.chart-caption{margin:8px 0 0;color:var(--muted);font:650 11px system-ui,sans-serif}
.leaderboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:22px 0}.ranking-list{display:grid;gap:9px;margin:18px 0 0;padding:0;list-style:none;counter-reset:rank}.ranking-list li{counter-increment:rank;display:grid;grid-template-columns:38px minmax(0,1fr) auto;align-items:center;gap:11px;padding:13px 14px;border:1px solid var(--line);border-radius:15px;background:rgba(255,255,255,.83)}.ranking-list li:before{content:counter(rank);display:grid;place-content:center;width:34px;height:34px;border-radius:11px;background:#f0ecfb;color:var(--violet);font:900 13px system-ui,sans-serif}.ranking-list strong{font:800 14px/1.4 system-ui,sans-serif}.ranking-list small{display:block;margin-top:3px;color:var(--muted);font:650 10px system-ui,sans-serif}.ranking-list b{color:var(--green);font:900 18px system-ui,sans-serif}.ranking-empty{grid-template-columns:1fr!important;text-align:center;color:var(--muted);font:650 13px system-ui,sans-serif}.ranking-empty:before{display:none!important}
.month-controls{display:flex;align-items:center;gap:9px}.month-controls button{border:1px solid #bcd9d8;border-radius:999px;padding:9px 13px;background:#fff;color:#296f73;font:800 12px system-ui,sans-serif;cursor:pointer}.month-controls button:disabled{opacity:.45;cursor:not-allowed}.month-controls strong{min-width:112px;text-align:center;color:#265f62;font:900 14px system-ui,sans-serif}.completed-log{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin-top:20px}.completed-item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:13px;padding:15px;border:1px solid #cfe4e2;border-radius:16px;background:rgba(255,255,255,.86);color:var(--ink);text-decoration:none;transition:.2s}.completed-item:hover{transform:translateY(-2px);border-color:#6ca8a7;box-shadow:0 10px 24px rgba(31,105,106,.1)}.completed-item time{display:grid;place-content:center;width:52px;height:46px;border-radius:13px;background:#def1ef;color:#267477;font:900 12px system-ui,sans-serif}.completed-item strong{font:850 15px/1.35 system-ui,sans-serif}.completed-item small{display:block;margin-top:5px;color:var(--muted);font:650 10px/1.45 system-ui,sans-serif}.completed-item>span{color:#2d797b;font:900 18px system-ui,sans-serif}.completed-empty{grid-column:1/-1;padding:30px;border:1px dashed #bcd8d6;border-radius:17px;text-align:center;color:var(--muted);font:650 13px system-ui,sans-serif}.status-message{padding:13px 16px;border-radius:14px;background:#fff0f2;color:#9b3149;font:750 13px system-ui,sans-serif}
[hidden]{display:none!important}@media(max-width:1250px){.summary-grid{grid-template-columns:repeat(4,1fr)}}@media(max-width:900px){.summary-grid{grid-template-columns:repeat(3,1fr)}.completed-log{grid-template-columns:1fr}}@media(max-width:780px){.leaderboard-grid{grid-template-columns:1fr}.panel-heading{align-items:flex-start;flex-direction:column}.dashboard-hero{align-items:center}.hero-total{width:110px}}@media(max-width:560px){.dashboard-shell{padding:18px 12px}.dashboard-hero{align-items:flex-start;padding:28px 22px;border-radius:24px}.dashboard-hero h1{font-size:42px}.hero-total{width:82px}.hero-total strong{font-size:28px}.hero-total span{font-size:9px}.summary-grid{grid-template-columns:repeat(2,1fr);gap:8px}.summary-grid article{padding:16px 13px}.analytics-panel{padding:20px 14px;border-radius:24px}.month-controls{width:100%;justify-content:space-between}}

/* Completion, writing-time, Step 20 and homework-tag analytics */
.summary-grid{grid-template-columns:repeat(8,minmax(0,1fr))}.summary-grid article:nth-child(8){background:linear-gradient(145deg,#fff,#f4eefe)}
.rate-panel,.time-panel,.step20-panel,.tag-panel{margin:22px 0}.rate-panel{border-top-color:#35a875;background:linear-gradient(155deg,#fff,#edf9f3)}.time-panel{border-top-color:#d87961;background:linear-gradient(155deg,#fff,#fff1ea)}.step20-panel{border-top-color:#e5ac36;background:linear-gradient(155deg,#fff,#fff8df)}.tag-panel{border-top-color:#8d55bd;background:linear-gradient(155deg,#fff,#f6effc)}
.rate-bar{fill:#42a87d}.time-bar{fill:#d87961}.cumulative-line{stroke:#4d3596;stroke-width:4;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 3px 4px rgba(50,37,111,.2))}.total-line-toggle{display:flex;align-items:center;gap:8px;padding:10px 13px;border:1px solid #e0c6bc;border-radius:999px;background:#fff;color:#7b3f31;font:800 12px system-ui,sans-serif}.total-line-toggle input{accent-color:#5d4ab3}.panel-action{padding:11px 15px;border:0;border-radius:999px;background:#32256f;color:#fff;font:850 12px system-ui,sans-serif;cursor:pointer}.panel-action:disabled{opacity:.45;cursor:not-allowed}
.step20-list,.tagged-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin-top:18px}.step20-item{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:14px;padding:17px;border:1px solid #ead9aa;border-radius:17px;background:rgba(255,255,255,.85)}.step20-item strong,.tagged-item strong{display:block;font:850 15px/1.35 system-ui,sans-serif}.step20-item small,.tagged-item small{display:block;margin-top:5px;color:var(--muted);font:650 10px system-ui,sans-serif}.step20-item p{display:-webkit-box;overflow:hidden;margin:11px 0 0;color:#575064;font:600 12px/1.55 system-ui,sans-serif;-webkit-line-clamp:3;-webkit-box-orient:vertical;white-space:pre-line}.step20-item button{padding:9px 11px;border:1px solid #dcc782;border-radius:12px;background:#fff8dc;color:#72500a;font:800 11px system-ui,sans-serif;cursor:pointer}.library-empty{grid-column:1/-1;padding:28px;border:1px dashed #cfc5dc;border-radius:17px;text-align:center;color:var(--muted);font:650 13px system-ui,sans-serif}
.tag-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.tag-tabs button{padding:8px 12px;border:2px solid var(--tag-color);border-radius:999px;background:#fff;color:#4e475a;font:800 11px system-ui,sans-serif;cursor:pointer}.tag-tabs button[aria-pressed=true]{background:var(--tag-color);color:var(--tag-text);box-shadow:0 6px 15px color-mix(in srgb,var(--tag-color) 32%,transparent)}.tagged-item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;padding:15px;border:1px solid #dfd1e9;border-radius:16px;background:rgba(255,255,255,.86);color:var(--ink);text-decoration:none}.tagged-item:hover{border-color:#9b6ebc;transform:translateY(-1px)}.tagged-item time{padding:8px 9px;border-radius:10px;background:#f0e8f7;color:#64437e;font:850 11px system-ui,sans-serif}.pagination{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:17px}.pagination button{padding:8px 12px;border:1px solid #d4c2df;border-radius:999px;background:#fff;color:#63417f;font:800 11px system-ui,sans-serif;cursor:pointer}.pagination button:disabled{opacity:.42;cursor:not-allowed}.pagination strong{color:var(--muted);font:750 11px system-ui,sans-serif}
.tag-tabs [data-tag-key=reluctant]{--tag-color:#ab12e6;--tag-text:#fff}.tag-tabs [data-tag-key=favourite]{--tag-color:#ff3473;--tag-text:#25182b}.tag-tabs [data-tag-key=teacher-added]{--tag-color:#920909;--tag-text:#fff}.tag-tabs [data-tag-key=well-done]{--tag-color:#ffd591;--tag-text:#25182b}.tag-tabs [data-tag-key=break-15]{--tag-color:#a1ff80;--tag-text:#25182b}.tag-tabs [data-tag-key=prepare-materials]{--tag-color:#32cd32;--tag-text:#143714}.tag-tabs [data-tag-key=hardest-today]{--tag-color:#7f1734;--tag-text:#fff}.tag-tabs [data-tag-key=easiest-today]{--tag-color:#74c9f1;--tag-text:#173b51}
@media(max-width:1250px){.summary-grid{grid-template-columns:repeat(4,1fr)}}@media(max-width:800px){.step20-list,.tagged-list{grid-template-columns:1fr}}@media(max-width:560px){.summary-grid{grid-template-columns:repeat(2,1fr)}.step20-item{grid-template-columns:1fr}.pagination{gap:7px}.pagination strong{font-size:9px}}