:root{--bg: #0d1016;--panel: #151a23;--panel2: #1b2130;--line: #273042;--ink: #e7eaf0;--muted: #8b94a7;--dim: #5d667a;--accent: #e8590c;--accent2: #f08c00;--accent-soft: rgba(232, 89, 12, .14);--ok: #37b24d;--ok-soft: rgba(55, 178, 77, .13);--bad: #f03e3e;--bad-soft: rgba(240, 62, 62, .12);--info: #4dabf7;--radius: 10px;--side: 248px;--font: "Segoe UI", system-ui, -apple-system, sans-serif;--head: Bahnschrift, "Segoe UI", sans-serif;--mono: Consolas, "Cascadia Mono", monospace}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 var(--font)}a{color:var(--accent2);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4{font-family:var(--head);font-weight:600;letter-spacing:.01em;margin:0 0 .5em;line-height:1.25}h1{font-size:28px}h2{font-size:21px}h3{font-size:17px}p{margin:0 0 .8em}code,.mono{font-family:var(--mono);font-size:.92em}button{font:inherit;color:inherit;cursor:pointer}input[type=number],input[type=text],input[type=password]{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:7px 10px;width:170px}input:focus-visible,button:focus-visible{outline:2px solid var(--accent2);outline-offset:2px}input[type=range]{accent-color:var(--accent);width:100%}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}.muted{color:var(--muted)}.small{font-size:13px}.chip{display:inline-flex;align-items:center;gap:4px;font-size:12px;padding:2px 9px;border-radius:99px;border:1px solid var(--line);color:var(--muted);white-space:nowrap}.chip.accent{border-color:var(--accent);color:var(--accent2)}.btn{border:1px solid var(--line);background:var(--panel2);border-radius:8px;padding:7px 14px;font-size:14px}.btn:hover{border-color:var(--muted)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.btn.primary:hover{background:#f76707}.btn.on{border-color:var(--accent);color:var(--accent2);background:var(--accent-soft)}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.note{border-left:3px solid var(--info);background:#4dabf714;padding:10px 14px;border-radius:0 8px 8px 0;margin:12px 0}.note.warn{border-color:var(--accent);background:var(--accent-soft)}.note.tune{border-color:var(--ok);background:var(--ok-soft)}.note .h{font:600 13px var(--head);letter-spacing:.06em;text-transform:uppercase;display:block;margin-bottom:2px}.formula{background:var(--panel2);border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;margin:12px 0;overflow-x:auto}.formula .legend{font-size:13px;color:var(--muted);margin-top:6px}.feedback{margin-top:12px;padding:12px 14px;border-radius:8px}.feedback.ok{background:var(--ok-soft);border:1px solid var(--ok)}.feedback.bad{background:var(--bad-soft);border:1px solid var(--bad)}table.plain{border-collapse:collapse;font-size:14px}table.plain td,table.plain th{border:1px solid var(--line);padding:4px 10px;text-align:center}table.plain th{color:var(--muted);font-weight:500}.bar{height:8px;border-radius:99px;background:var(--panel2);overflow:hidden}.bar>i{display:block;height:100%;background:var(--accent);border-radius:99px}.lesson-head{margin-bottom:18px}.lesson-head .kicker{font:600 12px var(--head);letter-spacing:.18em;text-transform:uppercase;color:var(--accent2)}.steps{position:sticky;top:0;z-index:5;display:flex;gap:4px;background:var(--bg);padding:8px 0;margin-bottom:8px;border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none}.steps a{padding:6px 12px;border-radius:8px;color:var(--muted);font-size:14px;white-space:nowrap}.steps a:hover{background:var(--panel);text-decoration:none;color:var(--ink)}.steps a b{color:var(--accent2);margin-right:6px;font-family:var(--head)}.section{padding:26px 0 8px;scroll-margin-top:50px}.section>h2 .n{color:var(--accent);margin-right:8px}.prose{max-width:760px}.prose ul,.prose ol{padding-left:1.3em}.prose li{margin:.25em 0}.prose li::marker{color:var(--accent)}.cheats{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}.cheat{background:var(--panel);border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:8px;padding:12px 14px;font-size:14px}.cheat b{display:block;font-family:var(--head);margin-bottom:4px}.map-wrap{overflow-x:auto;padding-bottom:4px}.map{display:grid;grid-template-columns:54px 1fr;grid-template-rows:auto 1fr auto;gap:0;min-width:600px;font-variant-numeric:tabular-nums}.map .ytitle{grid-column:1 / 3;font-size:12px;color:var(--muted);margin-bottom:4px}.map .yaxis{display:grid}.map .yaxis div,.map .xaxis div{font-size:12px;color:var(--muted);display:grid;place-items:center;border-radius:4px}.map .yaxis div{justify-content:end;padding-right:8px}.map .yaxis .hot,.map .xaxis .hot{color:var(--accent2);font-weight:700;background:var(--accent-soft)}.map .cells{position:relative;display:grid;gap:2px}.map .cell{font-size:12px;display:grid;place-items:center;height:30px;border-radius:3px;position:relative;-webkit-user-select:none;user-select:none}.map .cell.click{cursor:pointer}.map .cell.click:hover{outline:2px solid var(--ink);z-index:1}.map .cell.use{outline:2px solid var(--accent);outline-offset:-1px;z-index:2}.map .cell.pick{outline:3px solid var(--accent2);outline-offset:-2px;z-index:2}.map .cell.right{outline:3px solid var(--ok);outline-offset:-2px;z-index:3}.map .cell .w{position:absolute;right:2px;top:0;font-size:9px;font-weight:700;color:var(--accent2);text-shadow:0 0 3px #000,0 0 2px #000}.map .xaxis{grid-column:2;display:grid;gap:2px;margin-top:4px}.map .xtitle{grid-column:2;text-align:center;font-size:12px;color:var(--muted);margin-top:2px}.cross-v,.cross-h{position:absolute;pointer-events:none;background:var(--accent);opacity:.85;z-index:4}.cross-v{width:2px;top:0;bottom:0;transform:translate(-1px)}.cross-h{height:2px;left:0;right:0;transform:translateY(-1px)}.cross-dot{position:absolute;width:14px;height:14px;border-radius:50%;background:var(--accent);border:2px solid var(--bg);transform:translate(-7px,-7px);z-index:5;pointer-events:none;box-shadow:0 0 0 3px #e8590c59}.legend-ramp{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}.legend-ramp i{width:120px;height:10px;border-radius:3px;display:block}.trainer{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:16px;align-items:start}@media (max-width: 1100px){.trainer{grid-template-columns:minmax(0,1fr)}}.readout .big{font:600 34px var(--head);color:var(--accent2);line-height:1.1}.readout .calc{font-size:13px;color:var(--muted)}.readout .calc b{color:var(--ink);font-weight:600}.slider{margin:8px 0 14px}.slider label{display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}.slider label b{color:var(--ink);font-variant-numeric:tabular-nums}.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}.tabs button{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:6px 12px;font-size:14px;color:var(--muted)}.tabs button.on{border-color:var(--accent);color:var(--ink);background:var(--accent-soft)}.tabs button .ok{color:var(--ok);margin-left:6px}.choices{display:grid;gap:8px;max-width:560px}.choices button{text-align:left;border:1px solid var(--line);background:var(--panel2);border-radius:8px;padding:10px 14px}.choices button:hover{border-color:var(--muted)}.choices button.sel{border-color:var(--accent2)}.choices button.right{border-color:var(--ok);background:var(--ok-soft)}.choices button.wrong{border-color:var(--bad);background:var(--bad-soft)}.badge{margin-left:auto;background:var(--accent);color:#fff;font-size:11px;font-weight:700;border-radius:99px;padding:0 7px;line-height:18px}.btn.big{padding:11px 18px;font-size:15px}.player{max-width:1040px}.player-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px}.player-head h1{margin:2px 0 0;font-size:24px}.kicker{font:600 12px var(--head);letter-spacing:.16em;text-transform:uppercase;color:var(--accent2)}.segments{display:flex;gap:3px;margin-bottom:18px}.seg{flex:1;height:8px;border-radius:3px;border:0;padding:0;background:var(--panel2);cursor:pointer}.seg.lock{cursor:not-allowed;opacity:.5}.seg.done{background:var(--ok)}.seg.t-test{flex:1.6}.seg.cur{background:var(--accent);box-shadow:0 0 0 2px #e8590c59}.seg:not(.lock):not(.cur):hover{filter:brightness(1.4)}.step-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px 26px 26px;min-height:300px}.step-card h2{font-size:22px}.step-type{font:600 11px var(--head);letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}.step-body{min-width:0}.step-body>p,.step-body>ul,.step-body>ol{max-width:760px}.step-body li::marker{color:var(--accent)}.step-nav{position:sticky;bottom:0;display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 0;margin-top:12px;background:linear-gradient(transparent,var(--bg) 30%)}.step-nav .btn.primary:disabled{background:var(--panel2);border-color:var(--line);color:var(--muted);cursor:not-allowed;font-weight:500}.outcomes{background:var(--panel2);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:8px;padding:12px 16px;margin-bottom:16px}.outcomes ul{margin:6px 0 0;padding-left:20px}.question .prompt{margin-bottom:12px;font-size:16px}.choices button.dim{opacity:.5}.choices button:disabled{cursor:default}table.plain.wide{width:100%;max-width:640px}table.plain.wide td{text-align:left}.streak{display:flex;align-items:center;gap:6px;margin-bottom:14px;font-size:13px;color:var(--muted)}.streak i{width:22px;height:8px;border-radius:3px;background:var(--panel2);border:1px solid var(--line)}.streak i.on{background:var(--ok);border-color:var(--ok)}.streak span{margin-left:6px}.goal{border:1px dashed var(--accent);background:var(--accent-soft);border-radius:8px;padding:10px 14px;margin-bottom:12px}.goal.ok{border:1px solid var(--ok);background:var(--ok-soft)}.test-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;font:600 14px var(--head)}.dots{display:flex;gap:4px}.dots i{width:12px;height:12px;border-radius:50%;background:var(--panel2);border:1px solid var(--line)}.dots i.cur{border-color:var(--accent)}.dots i.ok{background:var(--ok);border-color:var(--ok)}.dots i.bad{background:var(--bad);border-color:var(--bad)}.result{text-align:center;padding:20px;border-radius:12px}.result.ok{background:var(--ok-soft);border:1px solid var(--ok)}.result.bad{background:var(--bad-soft);border:1px solid var(--bad)}.result .score{font:600 44px var(--head)}.center-card{max-width:620px;margin:40px auto;text-align:center;padding:30px}.big-icon{font-size:42px}@media (max-width: 860px){.step-card{padding:16px}.player-head .chip{display:none}}a.btn{color:var(--ink);display:inline-flex;align-items:center}a.btn:hover{text-decoration:none}a.btn.primary{color:#fff}.auth{min-height:100vh;display:grid;place-items:center;padding:24px 16px;background:radial-gradient(100% 80% at 80% 0%,#3a1a0a 0%,var(--bg) 60%)}.auth-card{width:100%;max-width:420px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:var(--bg);border-radius:10px;padding:4px;margin:6px 0 16px}.auth-tabs button{border:0;background:transparent;border-radius:8px;padding:8px;color:var(--muted);font-weight:600}.auth-tabs button.on{background:var(--panel2);color:var(--ink)}.auth-form{display:grid;gap:12px}.auth-form label,.field{display:grid;gap:4px;font-size:13px;color:var(--muted)}.auth-form input[type=text],.auth-form input[type=password]{width:100%;font-size:15px;padding:10px 12px}.auth-form label.check{display:flex;align-items:center;gap:8px;color:var(--ink)}.auth-form .btn.primary{width:100%;justify-content:center}.auth-form .btn.primary:disabled{opacity:.5;cursor:not-allowed}.avatar{flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--accent);color:#fff;font:600 15px var(--head)}.sync{font-size:11px;color:var(--muted)}.sync.ok{color:var(--ok)}.sync.offline{color:var(--dim)}.small-btn{padding:4px 9px;font-size:12px}.ok-text{color:var(--ok)}.bad-text{color:var(--bad)}.progress-page{max-width:1100px;display:grid;grid-template-columns:minmax(0,1fr);gap:16px}.progress-page .player-head{margin-bottom:0}.block h3{margin-bottom:10px}.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px}.tile{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;display:flex;flex-direction:column;gap:2px}.tile b{font:600 24px var(--head)}.tile-icon{font-size:18px}.heat-wrap{overflow-x:auto;margin-top:10px}.heat{display:grid;grid-template-rows:repeat(7,14px);gap:3px;width:max-content}.heat-wd{font-size:10px;color:var(--muted);line-height:14px}.heat-cell{width:14px;height:14px;border-radius:3px;background:var(--panel2);border:1px solid rgba(255,255,255,.04)}.table-wrap{overflow-x:auto}table.topics{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}table.topics th{text-align:left;font-weight:500;color:var(--muted);font-size:12px;padding:6px 8px;border-bottom:1px solid var(--line)}table.topics td{padding:7px 8px;border-bottom:1px solid var(--line)}table.topics td.num{font-variant-numeric:tabular-nums}table.topics td.due-now{color:var(--accent2);font-weight:600}.acc{display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums}.acc-bar{width:70px;height:6px;border-radius:99px;background:var(--panel2);overflow:hidden}.acc-bar i{display:block;height:100%;background:#3987e5;border-radius:99px}.recent{display:inline-flex;gap:2px}.recent i{width:7px;height:14px;border-radius:2px}.recent i.ok{background:var(--ok)}.recent i.bad{background:var(--bad)}.mastery{display:inline-flex;gap:3px}.mastery i{width:10px;height:10px;border-radius:50%;border:1px solid var(--line);background:var(--panel2)}.mastery i.on{background:var(--accent2);border-color:var(--accent2)}.shell{min-height:100%;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:30;background:#0d1016db;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.topbar-in{max-width:1120px;margin:0 auto;padding:0 24px;height:58px;display:flex;align-items:center;gap:18px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:none}.brand:hover{text-decoration:none}.brand b{font:600 15px var(--head);letter-spacing:.2em}.brand small{font:600 11px var(--head);letter-spacing:.2em;color:var(--accent2)}.tabs-top{display:flex;gap:4px;margin-left:auto}.tab{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:9px;color:var(--muted);font-size:14px;font-weight:500;position:relative}.tab:hover{color:var(--ink);background:var(--panel);text-decoration:none}.tab.on{color:var(--ink);background:var(--panel2)}.tab.on:after{content:"";position:absolute;left:12px;right:12px;bottom:-11px;height:2px;background:var(--accent);border-radius:2px}.ti{font-size:15px}.badge{background:var(--accent);color:#fff;font-size:11px;font-weight:700;border-radius:99px;padding:0 7px;line-height:18px}.acct{position:relative;flex:none}.acct-btn{border:0;background:none;padding:2px;position:relative;display:block;border-radius:50%}.acct-btn:hover .avatar{box-shadow:0 0 0 3px var(--accent-soft)}.avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--accent);color:#fff;font:600 15px var(--head)}.sync-dot{position:absolute;right:0;bottom:0;width:11px;height:11px;border-radius:50%;border:2px solid var(--bg);background:var(--dim)}.sync-dot.ok{background:var(--ok)}.sync-dot.saving{background:var(--accent2)}.acct-menu{position:absolute;right:0;top:calc(100% + 10px);width:260px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:0 16px 40px #00000073;display:grid}.acct-head{padding:10px 10px 12px;border-bottom:1px solid var(--line);margin-bottom:4px;display:grid;gap:2px}.acct-menu a,.acct-menu button{text-align:left;border:0;background:none;color:var(--ink);padding:9px 10px;border-radius:8px;font-size:14px}.acct-menu a:hover,.acct-menu button:hover{background:var(--panel2);text-decoration:none}.main{flex:1;width:100%;max-width:1120px;margin:0 auto;padding:28px 24px 80px}.player,.progress-page{margin:0 auto}.crumbs{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:6px;flex-wrap:wrap}.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--ink)}@media (max-width: 640px){.topbar-in{padding:0 12px;gap:8px}.brand span{display:none}.tabs-top{margin:0 auto}.tab{padding:7px 10px}.tab .tl{display:none}.tab .ti{font-size:18px}.tab .badge{position:absolute;top:0;right:-2px}.main{padding:18px 16px 60px}}.home{display:grid;gap:22px}.welcome{display:grid;gap:18px;padding:26px;border-radius:18px;border:1px solid var(--line);background:radial-gradient(90% 120% at 100% 0%,#3a1a0a,#151a23 55%)}.welcome h1{font-size:30px;margin:4px 0 6px}.welcome h1 span{display:block;color:var(--accent2);font-size:22px;margin-top:2px}.welcome-text p{max-width:640px;margin:0}.welcome-cards{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:14px}@media (max-width: 820px){.welcome-cards{grid-template-columns:minmax(0,1fr)}.welcome{padding:18px}}.cont-card,.today-card{background:#0d1016a6;border:1px solid var(--line);border-radius:14px;padding:16px 18px;display:grid;gap:8px;align-content:start}.cont-card{border-color:#e8590c8c}.cont-card h2{margin:0;font-size:21px}.cont-card p{margin:0}.cont-bar,.rm-bar{display:block;height:6px;background:var(--panel2);border-radius:99px;overflow:hidden}.cont-bar i,.rm-bar i{display:block;height:100%;background:var(--accent);border-radius:99px}.today-review{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.ring{position:relative;width:76px;height:76px;flex:none}.ring span{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;grid-auto-flow:column;place-content:center;align-items:baseline;gap:1px;font-size:12px;color:var(--muted)}.ring span b{font:600 20px var(--head);color:var(--ink)}.today-main{display:grid;gap:2px}.today-main>b{font:600 16px var(--head)}.rm-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap;margin-top:6px}.rm-head h2{margin:0;font-size:24px}.roadmap{--spine: 3px;--node: 38px;list-style:none;margin:0;padding:0;position:relative}.roadmap ol{list-style:none;margin:0;padding:0}.stage{position:relative;padding-bottom:8px}.stage-head{position:relative;z-index:2;display:flex;align-items:center;gap:14px;margin:0 auto 18px;width:min(560px,100%);background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:14px 18px}.stage.active .stage-head{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.stage.done .stage-head{border-color:#37b24d99}.stage-icon{flex:none;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:22px;background:var(--panel2);color:var(--accent2)}.stage.done .stage-icon{background:var(--ok-soft);color:var(--ok)}.stage.active .stage-icon{background:var(--accent);color:#fff}.stage-text{display:grid;gap:1px;min-width:0}.stage-text b{font:600 19px var(--head)}.stage-kicker{font:600 11px var(--head);letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}.stage.finish .stage-head{margin-bottom:0;border-style:dashed}.stage:before,.rm-item:before{content:"";position:absolute;left:50%;width:var(--spine);transform:translate(-50%);background:var(--line);z-index:0}.stage:before{top:0;bottom:0}.stage.finish:before{bottom:50%}.stage.done:before{background:var(--ok)}.rm-item:before{top:0;bottom:-14px}.rm-item.passed:before{background:var(--ok)}.rm-list{display:grid;gap:14px;padding-bottom:26px!important}.rm-item{position:relative;display:grid;grid-template-columns:minmax(0,1fr) calc(var(--node) + 28px) minmax(0,1fr);align-items:center}.rm-node{grid-column:2;grid-row:1;justify-self:center;position:relative;z-index:2;width:var(--node);height:var(--node);border-radius:50%;display:grid;place-items:center;font:600 14px var(--head);background:var(--bg);border:2px solid var(--line);color:var(--muted)}.rm-item.l .rm-card{grid-column:1;grid-row:1}.rm-item.r .rm-card{grid-column:3;grid-row:1}.rm-item.passed .rm-node{background:var(--ok);border-color:var(--ok);color:#fff}.rm-item.open .rm-node{border-color:var(--accent);color:var(--accent2)}.rm-item.current .rm-node{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 0 0 6px var(--accent-soft);animation:pulse 2.4s ease-in-out infinite}.rm-item.soon .rm-node,.rm-item.locked .rm-node,.rm-item.noaccess .rm-node{border-style:dashed;font-size:12px}@keyframes pulse{50%{box-shadow:0 0 0 11px #e8590c0d}}@media (prefers-reduced-motion: reduce){.rm-item.current .rm-node{animation:none}}.rm-card{display:grid;gap:4px;padding:13px 16px;background:var(--panel);border:1px solid var(--line);border-radius:14px;color:var(--ink);position:relative;transition:border-color .15s,transform .15s}a.rm-card:hover{text-decoration:none;border-color:var(--muted);transform:translateY(-1px)}.rm-item.current .rm-card{border-color:var(--accent);background:linear-gradient(135deg,rgba(232,89,12,.16),var(--panel) 70%)}.rm-item.passed .rm-card{border-color:#37b24d73}.rm-item.soon .rm-card,.rm-item.locked .rm-card,.rm-item.noaccess .rm-card{opacity:.55}.rm-card:after{content:"";position:absolute;top:50%;width:14px;height:2px;background:var(--line)}.rm-item.l .rm-card:after{right:-15px}.rm-item.r .rm-card:after{left:-15px}.rm-top{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.rm-num{font:600 11px var(--head);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}.tag{font-size:11px;font-weight:600;border-radius:99px;padding:1px 8px}.star-tag{color:var(--accent2);background:var(--accent-soft)}.here{color:#fff;background:var(--accent)}.rm-status{margin-left:auto;font-size:12px;color:var(--muted)}.rm-status.passed{color:var(--ok);font-weight:600}.rm-status.open{color:var(--accent2);font-weight:600}.rm-title{font:600 16px var(--head);line-height:1.3}.rm-sub{font-size:12.5px;color:var(--muted)}@media (max-width: 760px){.stage:before,.rm-item:before{left:19px}.stage-head{margin-left:0}.rm-item{grid-template-columns:calc(var(--node) + 12px) minmax(0,1fr)}.rm-node{grid-column:1;justify-self:start}.rm-item.l .rm-card,.rm-item.r .rm-card{grid-column:2}.rm-item.l .rm-card:after,.rm-item.r .rm-card:after{left:-13px;right:auto;width:12px}.stage-icon{width:40px;height:40px}}.method-strip{display:grid;gap:8px}.method-row{display:flex;gap:8px;flex-wrap:wrap}.method-chip{display:inline-flex;gap:6px;align-items:baseline;padding:6px 12px;border:1px solid var(--line);border-radius:99px;font-size:13px;background:var(--panel)}.method-chip b{font-weight:600}.rm-item.compact .rm-card{padding:8px 14px;gap:2px}.rm-item.compact .rm-title{font-size:14px;font-weight:500}.rm-item.compact .rm-node{width:28px;height:28px;font-size:11px}.rm-list:has(.compact){gap:10px}@media (max-width: 760px){.rm-item.compact .rm-node{margin-left:5px}}.scope{margin:0 0 12px;max-width:640px}.scope svg{width:100%;height:auto;display:block;border-radius:10px;border:1px solid var(--line)}.scope-bg{fill:#071410}.scope-grid{stroke:#78dcaa1f;stroke-width:1}.scope-axis{stroke:#78dcaa47;stroke-width:1}.scope-zero{stroke:#ffb37a73;stroke-dasharray:4 4}.scope-mark{fill:#ffb37a;font-size:12px}.scope-trace{fill:none;stroke:#69f0ae;stroke-width:2;stroke-linejoin:round}.scope-warn{fill:#ff8787;font-size:13px;font-weight:600}.scope figcaption{display:flex;justify-content:space-between;gap:10px;font-size:13px;color:var(--muted);margin-top:6px}.scope-set{font-family:var(--mono);color:var(--ink)}.knobs{display:flex;gap:18px;flex-wrap:wrap;margin:4px 0 12px}.knob{display:grid;gap:6px;font-size:13px;color:var(--muted)}.knob .seg-row{display:flex;gap:4px;flex-wrap:wrap}.knob .seg-row button{border:1px solid var(--line);background:var(--panel2);border-radius:7px;padding:4px 9px;font-size:13px;font-family:var(--mono)}.knob .seg-row button.on{border-color:var(--accent);background:var(--accent-soft);color:var(--ink)}.checklist{list-style:none;padding:0;margin:8px 0;display:grid;gap:4px;font-size:14px}.checklist li:before{content:"○ ";color:var(--dim)}.checklist li.ok:before{content:"✓ ";color:var(--ok)}.fuel{display:grid;gap:4px}.fuel-bar{gap:8px}.fuel-grid-wrap{overflow-x:auto;padding-bottom:4px}.fuel-grid{display:grid;gap:2px;min-width:640px;font-variant-numeric:tabular-nums}.fg-y,.fg-x{font-size:12px;color:var(--muted);display:grid;place-items:center}.fg-y{justify-content:end;padding-right:8px}.fg-cell{border:1px solid transparent;background:var(--panel2);border-radius:4px;padding:3px 2px;display:grid;gap:0;line-height:1.2;color:var(--muted);min-height:38px}.fg-cell.data{color:var(--ink)}.fg-cell.sel{border-color:var(--ink)}.fg-cell:hover{border-color:var(--muted)}.fg-ve{font-size:12px}.fg-err{font-size:10.5px;font-weight:600}.fuel-side{display:grid;gap:8px;margin-top:10px}.fuel-side .card{display:grid;gap:3px;padding:12px 14px}.pattern{display:inline-grid;gap:2px;margin:4px 0 10px}.pattern i{width:26px;height:18px;border-radius:3px;display:block}.bench{display:grid;gap:10px}.bench-adv{font:600 26px var(--head);color:var(--accent2);min-width:64px;text-align:center}.bench-read{font-size:14px}.stand-chart{width:100%;max-width:600px;height:auto;background:var(--panel2);border-radius:10px;border:1px solid var(--line)}.ch-grid{stroke:var(--line);stroke-width:1}.ch-tick{fill:var(--muted);font-size:11px}.ch-cur{stroke:var(--accent);stroke-dasharray:4 4}.ch-line{fill:none;stroke:#3987e5;stroke-width:2}.ch-dot{fill:#3987e5;stroke:var(--panel2);stroke-width:2}.ch-knock{fill:#e5484d;stroke:var(--panel2);stroke-width:2}.ch-knock-t{fill:#ff8787;font-size:11px;font-weight:600}.order-q{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px}@media (max-width: 760px){.order-q{grid-template-columns:minmax(0,1fr)}}.order-seq{margin:0;padding:10px 10px 10px 32px;border:1px dashed var(--line);border-radius:10px;min-height:60px;display:grid;gap:6px;align-content:start}.order-seq li{padding:6px 8px;border-radius:6px;background:var(--panel2);font-size:14px}.order-seq li.right{background:var(--ok-soft)}.order-seq li.wrong{background:var(--bad-soft)}.order-seq li.placeholder{background:none;list-style:none;margin-left:-20px}.planner-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;align-items:start}@media (max-width: 900px){.planner-grid{grid-template-columns:minmax(0,1fr)}}.planner-rows{display:grid;gap:10px}.plan-row{display:grid;gap:6px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--panel2)}.plan-row.ok{border-color:#37b24d99}.road-band{fill:#37b24d12}.logchart{display:grid;gap:6px;margin-bottom:10px}.logchart svg{width:100%;height:auto;background:var(--panel2);border:1px solid var(--line);border-radius:10px}.lc-bg{fill:#ffffff04;stroke:var(--line)}.lc-name{fill:var(--ink);font-size:12px;font-weight:600}.lc-main-t{fill:#74b0ff;font-weight:500}.lc-sec-t{fill:#ff8f8f;font-weight:500}.lc-tgt-t{fill:var(--muted);font-weight:500}.lc-tick{fill:var(--muted);font-size:10.5px}.lc-line{fill:none;stroke-width:1.8;stroke-linejoin:round}.lc-tgt{fill:none;stroke:var(--muted);stroke-width:1.2;stroke-dasharray:5 4}.lc-hover{stroke:var(--ink);stroke-width:1;opacity:.5}.lc-mark{stroke:var(--accent);stroke-width:2.5}.lc-truth{stroke:var(--ok);stroke-width:2;stroke-dasharray:6 3}.lc-readout{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:12.5px;min-height:20px;font-variant-numeric:tabular-nums}.cyl-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:18px;align-items:start}@media (max-width: 640px){.cyl-grid{grid-template-columns:minmax(0,1fr)}.cyl-svg{max-width:200px}}.cyl-svg{width:100%;height:auto}.cyl-wall{fill:none;stroke:var(--muted);stroke-width:3}.cyl-piston{fill:#8b94a7}.cyl-rod{stroke:#c0c7d4;stroke-width:8;stroke-linecap:round}.cyl-crank{fill:none;stroke:var(--line);stroke-width:2}.cyl-pin{fill:var(--accent)}.big-stroke{font:600 28px var(--head);color:var(--accent2)}.lam-scale{position:relative;height:34px;border-radius:8px;margin:10px 0 4px;background:linear-gradient(90deg,#3987e5,#5598e7 30%,#37b24d 45%,#f08c00 70%,#e5484d);opacity:.85}.lam-zone{position:absolute;top:0;bottom:0;border:2px solid rgba(255,255,255,.55);border-radius:4px}.lam-zone.on{border-color:#fff;box-shadow:0 0 0 3px #ffffff40}.lam-mark{position:absolute;top:-6px;bottom:-6px;width:4px;margin-left:-2px;background:#fff;border-radius:2px;box-shadow:0 0 0 2px var(--bg)}.cmp-area{fill:#3987e50f}.cmp-island{fill:none;stroke:#37b24d8c;stroke-width:1.2}.cmp-surge{stroke:#e66767;stroke-width:2.5}.cmp-surge-t{fill:#ff8f8f;font-size:11px}.cmp-choke{stroke:#c98500;stroke-width:2;stroke-dasharray:6 4}.cmp-line{fill:none;stroke:#3987e5;stroke-width:2}.goal{display:grid;gap:8px}.goal.fail{border-color:var(--bad);background:var(--bad-soft)}.goal-fail{color:#ffb3b3;font-size:14px}.goal-btn{justify-self:start}.checklist li.no:before{content:"✗ ";color:var(--bad)}.player-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:20px;align-items:start}.fref-side{display:none}.fref-toggle{display:inline-flex}@media (min-width: 1200px){.main:has(.player-wrap){max-width:1400px}.player-wrap{grid-template-columns:minmax(0,1fr) 320px}.player-wrap .player{margin:0;max-width:none}.fref-side{display:block;position:sticky;top:74px;max-height:calc(100vh - 90px);overflow-y:auto}.fref-toggle,.fref-mobile{display:none}}.fref-mobile{margin-bottom:14px}.fref{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px;display:grid;gap:10px}.fref-head{display:grid;gap:8px}.fref-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:var(--bg);padding:3px;border-radius:9px}.fref-tabs button{border:0;background:none;color:var(--muted);padding:6px;border-radius:7px;font-size:13px}.fref-tabs button.on{background:var(--panel2);color:var(--ink)}.fref-mod{font:600 11px var(--head);letter-spacing:.12em;text-transform:uppercase;color:var(--accent2);margin:8px 0 4px}.fref-item{border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:var(--panel2);margin-bottom:8px}.fref-item summary{cursor:pointer;font-weight:600;font-size:14px}.fref-tex{overflow-x:auto;font-size:.9em}.fref-legend{font-size:12.5px;color:var(--muted);display:grid;gap:2px}.courses{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}.course-card{display:grid;gap:8px;align-content:start;padding:22px;border-radius:18px;border:1px solid var(--line);background:var(--panel);color:var(--ink);transition:border-color .15s,transform .15s}.course-card:hover{text-decoration:none;border-color:var(--accent);transform:translateY(-2px)}.course-card.diag{background:linear-gradient(135deg,rgba(57,135,229,.12),var(--panel) 60%)}.course-card.tune{background:linear-gradient(135deg,rgba(232,89,12,.14),var(--panel) 60%)}.course-icon{font-size:30px}.course-title{font:600 22px var(--head)}.seg-chain{display:grid;gap:8px}.seg-item{display:grid;grid-template-columns:minmax(0,1fr) 90px auto;gap:10px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel2)}.seg-item.on{border-color:var(--accent2)}.seg-item.right{border-color:var(--bad);background:var(--bad-soft)}@media (max-width: 640px){.seg-item{grid-template-columns:minmax(0,1fr)}}.q-meta{font-size:13px;color:var(--muted);margin:-4px 0 8px}.q-hint{margin:0 0 10px;font-size:14px}.q-hint summary{cursor:pointer;color:var(--accent2);font-weight:600;font-size:13px}.q-hint>div{margin-top:6px;padding:10px 12px;background:var(--panel2);border-left:3px solid var(--accent2);border-radius:0 8px 8px 0}.ig{margin:14px 0;padding:12px 14px 10px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(180deg,rgba(255,255,255,.02),transparent)}.ig svg{width:100%;height:auto;display:block;max-width:680px;margin:0 auto;font-family:var(--font)}.ig figcaption{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.5}*{scrollbar-width:thin;scrollbar-color:rgba(139,148,167,.28) transparent}*::-webkit-scrollbar{width:8px;height:8px}*::-webkit-scrollbar-track{background:transparent}*::-webkit-scrollbar-thumb{background:#8b94a747;border-radius:99px;border:2px solid transparent;background-clip:padding-box}*::-webkit-scrollbar-thumb:hover{background-color:#8b94a780}*::-webkit-scrollbar-button{display:none;height:0;width:0}.fref-side{scrollbar-color:transparent transparent;scrollbar-gutter:stable}.fref-side:hover{scrollbar-color:rgba(139,148,167,.35) transparent}.fref-side{overflow-x:hidden}.fref-item{min-width:0}.fref{grid-template-columns:minmax(0,1fr)}.fref-tabs{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.fref-tex{max-width:100%;overflow-x:auto;overflow-y:hidden}.calc{margin-top:12px;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--panel2);display:grid;gap:10px;max-width:560px}.calc-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:var(--bg);padding:3px;border-radius:9px}.calc-tabs button{border:0;background:none;color:var(--muted);padding:7px;border-radius:7px;font-size:13px}.calc-tabs button.on{background:var(--panel);color:var(--ink)}.calc-basic{display:grid;gap:8px}.calc-screen{width:100%;font-size:17px;padding:10px 12px;text-align:right}.calc-result{text-align:right;font-size:20px;color:var(--accent2);min-height:26px}.calc-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.calc-key{padding:11px 0;font-size:17px;border-radius:9px;border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer}.calc-key:hover{border-color:var(--accent)}.calc-key.op{color:var(--accent2);font-weight:700}.calc-key.eq{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:700}.calc-fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px}.calc-field{display:grid;gap:4px;font-size:12.5px;color:var(--muted)}.calc-field input{width:100%}.calc-steps{display:grid;gap:6px;font-size:13.5px;padding:10px 12px;border-radius:9px;background:var(--bg);overflow-x:auto}.calc-steps b{color:var(--accent2)}.calc-tape{margin:0;padding-left:20px;font-size:12.5px;color:var(--muted);display:grid;gap:2px}.calc-tape-v{border:0;background:none;color:var(--accent2);font:inherit;font-weight:700;cursor:pointer;text-decoration:underline dotted;padding:0}.offline-veil{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:grid;place-items:center;padding:16px;background:#080a0ed1;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.offline-veil .card{max-width:460px}