@import "https://fonts.googleapis.com/css2?family=Instrument+Sans:wght@400;500;600&display=swap";:root{--bg:#13151a;--panel:#1b1e25;--line:#2a2e38;--fg:#e9e7e2;--muted:#8d919c;--accent:#9db4ff;--forgot:#e58a8a;--shaky:#e3b565;--solid:#8fc4a1;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--fg);padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);margin:0;font:16px/1.5 Instrument Sans,system-ui,-apple-system,sans-serif}main,.login{max-width:1400px;margin:0 auto;padding:8px 32px 64px}.login{max-width:480px}h1{letter-spacing:-.01em;margin:24px 0 4px;font-size:1.6rem;font-weight:600}.sub{color:var(--muted);margin:0 0 24px}.empty{color:var(--muted);margin:24px 0}.note{color:var(--muted);font-size:.9rem}.meta{color:var(--muted);font-size:.85rem}.error{color:var(--forgot)}nav{gap:4px;max-width:1400px;margin:0 auto;padding:12px 28px 0;display:flex}.tab{color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:8px;padding:8px 12px}.tab.on{color:var(--fg);background:var(--panel)}button,a,select,input{font:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.rail{margin:0;padding:0;list-style:none;position:relative}.row{gap:16px;padding-bottom:28px;display:flex;position:relative}.row:last-child{padding-bottom:0}.row:before{content:"";background:var(--line);width:2px;position:absolute;top:20px;bottom:0;left:6px}.row:last-child:before{display:none}.dot{border:2px solid var(--accent);background:var(--bg);z-index:1;border-radius:50%;flex:none;width:14px;height:14px;margin-top:5px;position:relative}.row.done .dot{background:var(--solid);border-color:var(--solid)}.row.done .title{color:var(--muted);text-decoration:line-through;-webkit-text-decoration-color:var(--line);text-decoration-color:var(--line)}.body{flex:1;min-width:0}.title{margin:2px 0 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12px;font-size:1.1rem;font-weight:600}.outcome{color:var(--muted);font-size:.9rem}.outcome.solid{color:var(--solid)}.outcome.shaky{color:var(--shaky)}.outcome.forgot{color:var(--forgot)}.hero{margin:8px 0 20px}.hero-num{letter-spacing:-.02em;font-size:4rem;font-weight:600;line-height:1.1}.hero-num span{color:var(--muted);letter-spacing:0;font-size:1rem;font-weight:400}.seg{background:var(--line);border-radius:6px;height:12px;margin:14px 0 10px;display:flex;overflow:hidden}.seg i{height:100%;display:block}.seg .mastered,.legend .mastered{background:var(--solid)}.seg .revising,.legend .revising{background:var(--accent)}.legend{color:var(--muted);flex-wrap:wrap;gap:4px 16px;font-size:.85rem;display:flex}.legend i{border-radius:50%;width:8px;height:8px;margin-right:6px;display:inline-block}.legend .todo{background:var(--line)}.tiles{grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:16px;display:grid}.tile{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px}.tile b{font-size:2rem;font-weight:600;line-height:1.2;display:block}.tile span{color:var(--muted);font-size:.85rem}.stages{gap:12px;display:grid}.stage{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:0 16px}.stage.is-mastered{border-color:color-mix(in srgb, var(--solid) 45%, var(--line))}.stage-head{cursor:pointer;align-items:center;gap:12px;min-height:48px;padding:14px 0;list-style:none;display:flex}.stage-head::-webkit-details-marker{display:none}.stage-head:before{content:"+";width:16px;color:var(--muted)}.stage[open]>.stage-head:before{content:"−"}.stage-name{font-size:1.05rem;font-weight:500}.stage-due{color:var(--shaky);font-size:.8rem}.stage-count{font-variant-numeric:tabular-nums;color:var(--muted);margin-left:auto}.chips{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:8px;padding:0 0 16px;display:grid}.chip{background:var(--bg);border:1px solid var(--line);color:var(--fg);border-radius:10px;align-items:flex-start;gap:10px;padding:10px 12px;font-size:.95rem;line-height:1.35;text-decoration:none;display:flex}.chip.today{border-color:var(--accent)}.chip.overdue{border-color:var(--shaky)}.chip-title{overflow-wrap:anywhere;flex:1;min-width:0}.chip-due{white-space:nowrap;color:var(--muted);flex:none;margin-top:2px;font-size:.75rem}.chip.overdue .chip-due{color:var(--shaky)}.diff{background:var(--muted);border-radius:50%;flex:none;width:8px;height:8px;margin-top:7px}.diff.easy{background:var(--solid)}.diff.medium{background:var(--shaky)}.diff.hard{background:var(--forgot)}.stage-empty{margin:0 4px 14px}.strip{align-items:flex-end;gap:6px;height:96px;margin:12px 0 16px;display:flex}.strip-day{flex-direction:column;flex:1;justify-content:flex-end;align-items:stretch;min-width:0;height:100%;display:flex}.strip-bar{background:var(--line);border-radius:3px;flex-direction:column;min-height:3px;display:flex;overflow:hidden}.strip-bar i{min-height:0;display:block}.strip-bar .solid{background:var(--solid)}.strip-bar .shaky{background:var(--shaky)}.strip-bar .forgot{background:var(--forgot)}.strip-label{text-align:center;color:var(--muted);margin-top:4px;font-size:.7rem}.recent{margin:0;padding:0;list-style:none}.recent li{border-bottom:1px solid var(--line);align-items:center;gap:10px;padding:10px 0;display:flex}.recent-title{overflow-wrap:anywhere;flex:1;min-width:0}.pill{text-align:center;text-transform:capitalize;border:1px solid var(--line);border-radius:999px;flex:none;min-width:56px;padding:2px 8px;font-size:.75rem}.pill.solid{color:var(--solid);border-color:var(--solid)}.pill.shaky{color:var(--shaky);border-color:var(--shaky)}.pill.forgot{color:var(--forgot);border-color:var(--forgot)}.by-pattern summary{cursor:pointer;min-height:44px;font-size:1.1rem;font-weight:600}@media (prefers-reduced-motion:no-preference){.dot{transition:background .2s,border-color .2s}}@media (width<=760px){main,.login{padding:8px 16px 64px}}.top{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:48px;display:grid}.top-side .tiles{margin-top:8px}.bottom{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:48px;display:grid}.by-pattern{margin-top:36px}.by-pattern .topics{grid-template-columns:1fr 1fr;gap:20px 24px}.settings{max-width:520px}@media (width<=900px){.top,.bottom,.by-pattern .topics{grid-template-columns:1fr;gap:0 24px}}.cards{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;margin:0;padding:0;list-style:none;display:grid}.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;flex-direction:column;gap:4px;padding:18px}.card:before,.card .dot{display:none}.card.done{opacity:.8}.card .title{font-size:1.2rem}.card .rate{grid-template-columns:repeat(3,minmax(0,1fr))}.card .rate .btn{min-width:0;padding:8px 4px}.card .rate .btn small{white-space:normal}