.rhythmRocketSurface{color:var(--ink-950);background:var(--bg);font-family:var(--font-body),Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.rhythmRocketSurface,.rhythmRocketSurface *{box-sizing:border-box}.rhythmRocketSurface{width:100vw;min-width:320px;min-height:100vh;margin:-2rem calc(50% - 50vw);background:linear-gradient(0deg,rgba(93,84,245,.045) 0 1px,transparent 1px 18px),radial-gradient(640px 320px at 8% 8%,rgba(115,108,255,.14),transparent 62%),radial-gradient(540px 320px at 94% 14%,rgba(79,107,255,.1),transparent 64%),linear-gradient(140deg,#fbfcff,#f4f7ff 46%,#faf7f0);background-size:auto}.rhythmRocketSurface button,.rhythmRocketSurface input{font:inherit}.rhythmRocketSurface button{cursor:pointer}.rhythmRocketSurface .appShell{width:min(1180px,calc(100% - 32px));margin:0 auto;padding:28px 0 42px}.rhythmRocketSurface .learningBreadcrumb{display:flex;flex-wrap:wrap;gap:.45rem;align-items:center;margin-bottom:16px;color:var(--ink-600);font-size:.86rem;font-weight:700}.rhythmRocketSurface .learningBreadcrumb a{color:var(--signal-800);text-decoration:none}.rhythmRocketSurface .learningBreadcrumb a:hover{color:var(--signal-900)}.rhythmRocketSurface .launchSequence{display:grid;gap:18px;grid-template-columns:minmax(150px,.22fr) minmax(0,1fr);align-items:stretch}.rhythmRocketSurface .launchSequenceRail{display:grid;align-content:stretch;gap:10px}.rhythmRocketSurface .launchSequenceStep{display:grid;gap:8px;align-content:center;min-height:92px;padding:14px;border:1px solid rgba(245,139,68,.34);border-radius:20px;background:linear-gradient(135deg,rgba(255,251,232,.96),rgba(232,248,255,.92)),repeating-linear-gradient(90deg,rgba(245,139,68,.14) 0 .45rem,transparent .45rem 1.4rem);box-shadow:0 12px 26px rgba(47,94,168,.08)}.rhythmRocketSurface .launchSequenceStep span{width:-moz-max-content;width:max-content;min-width:2.4rem;border-radius:999px;background:#102b63;color:#fff8dc;font-size:.78rem;font-weight:900;line-height:1;padding:.45rem .6rem;text-align:center}.rhythmRocketSurface .launchSequenceStep strong{color:#102b63;font-size:clamp(1rem,1.5vw,1.24rem);line-height:1.05}.rhythmRocketSurface .launchSequenceDeck{min-width:0}.rhythmRocketSurface .basicRhythmsPanel,.rhythmRocketSurface .controlPanel,.rhythmRocketSurface .frequencyPanel,.rhythmRocketSurface .heroPanel,.rhythmRocketSurface .howToPanel,.rhythmRocketSurface .lessonPanel,.rhythmRocketSurface .rhythmQuestionPanel,.rhythmRocketSurface .selectorPanel,.rhythmRocketSurface .teacherNote{border:1px solid rgba(221,226,240,.96);border-radius:22px;box-shadow:0 14px 34px rgba(35,40,58,.07)}.rhythmRocketSurface .heroPanel{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;min-height:320px;padding:30px;background:linear-gradient(0deg,rgba(93,84,245,.055) 0 1px,transparent 1px 16px),linear-gradient(135deg,rgba(255,253,241,.98),rgba(234,240,255,.96) 58%,rgba(244,242,255,.98));border-color:rgba(221,213,255,.96)}.rhythmRocketSurface .launchSequence .rhythmQuestionPanel{margin-top:18px}.rhythmRocketSurface .heroCopy p:last-child{max-width:820px;margin-bottom:0;color:var(--ink-700);font-size:clamp(1.18rem,2.2vw,1.7rem);font-weight:760;line-height:1.25}.rhythmRocketSurface .eyebrow{margin:0 0 8px;color:var(--signal-800);font-size:clamp(.82rem,1.2vw,.96rem);font-weight:800;letter-spacing:.12em;text-transform:uppercase}.rhythmRocketSurface h1,.rhythmRocketSurface h2,.rhythmRocketSurface h3,.rhythmRocketSurface p{margin-top:0}.rhythmRocketSurface h1{max-width:780px;margin-bottom:14px;color:var(--ink-950);font-size:clamp(3rem,7vw,5.8rem);line-height:.98;letter-spacing:0}.rhythmRocketSurface h2{margin-bottom:10px;color:var(--ink-950);font-size:clamp(1.75rem,3vw,2.75rem);line-height:1.05;letter-spacing:0}.rhythmRocketSurface h3{margin-bottom:12px;color:var(--ink-950);font-size:clamp(1.28rem,2vw,1.7rem)}.rhythmRocketSurface .speedBadge{min-width:250px;padding:20px;border:1px solid rgba(221,226,240,.96);border-radius:22px;background:rgba(255,255,255,.92);text-align:center;box-shadow:0 12px 28px rgba(35,40,58,.08)}.rhythmRocketSurface .speedBadge span{display:block;color:var(--ink-600);font-size:.95rem;font-weight:800}.rhythmRocketSurface .speedBadge strong{display:block;margin-top:8px;color:var(--signal-800);font-size:clamp(1.45rem,2.8vw,2.15rem);line-height:1}.rhythmRocketSurface .rhythmQuestionPanel{margin-top:24px;padding:24px;background:rgba(255,255,255,.94)}.rhythmRocketSurface .rhythmQuestionPanel h2{font-size:clamp(2.2rem,3.8vw,3.6rem)}.rhythmRocketSurface .rhythmQuestionPanel p:not(.eyebrow){max-width:1040px;margin-bottom:12px;color:var(--ink-700);font-size:clamp(1.05rem,1.75vw,1.35rem);font-weight:760;line-height:1.35}.rhythmRocketSurface .rhythmQuestionPanel p:last-child{margin-bottom:0}.rhythmRocketSurface .basicRhythmsPanel{margin-top:0;padding:24px;background:linear-gradient(180deg,rgba(255,253,241,.96),rgba(255,255,255,.98))}.rhythmRocketSurface .pulseEngineGrid{display:grid;gap:20px;grid-template-columns:minmax(0,1.12fr) minmax(300px,.58fr);align-items:stretch;margin-top:24px}.rhythmRocketSurface .pulseEngineGrid .lessonPanel{margin-top:0;background:linear-gradient(180deg,rgba(232,248,255,.98),rgba(255,255,255,.98)),repeating-linear-gradient(90deg,rgba(30,104,215,.09) 0 1px,transparent 1px 2.2rem)}.rhythmRocketSurface .basicRhythmLayout{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.42fr);gap:22px;align-items:stretch}.rhythmRocketSurface .basicRhythmChooser{display:grid;gap:16px}.rhythmRocketSurface .fourBeatStrip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.rhythmRocketSurface .fourBeatStrip span{display:grid;min-height:74px;place-items:center;border:1px solid rgba(199,220,247,.98);border-radius:16px;background:var(--rhy-bg);color:var(--rhy-fg);font-size:clamp(1.05rem,1.8vw,1.35rem);font-weight:850;box-shadow:0 8px 18px rgba(47,94,168,.08)}.rhythmRocketSurface .basicRhythmListenPanel{display:grid;grid-template-columns:minmax(220px,.38fr) 1fr;gap:14px;align-items:center;padding:16px;border:1px solid rgba(166,225,196,.8);border-radius:20px;background:rgba(221,247,234,.58)}.rhythmRocketSurface .basicBeatButton{min-height:82px;padding:14px 18px;border:1px solid rgba(93,84,245,.18);border-radius:999px;background:linear-gradient(180deg,var(--signal-700),var(--signal-800));color:#ffffff;font-size:clamp(1.18rem,2vw,1.65rem);font-weight:850;line-height:1.05;box-shadow:0 12px 26px rgba(75,66,227,.18)}.rhythmRocketSurface .basicBeatButton.isPlaying{background:linear-gradient(180deg,#6d46b8,var(--signal-900))}.rhythmRocketSurface .basicBeatError,.rhythmRocketSurface .basicBeatHelper,.rhythmRocketSurface .basicBeatStatus{margin-bottom:0}.rhythmRocketSurface .basicBeatStatus{color:var(--ink-950);font-size:clamp(1.1rem,1.8vw,1.38rem);font-weight:820;line-height:1.15}.rhythmRocketSurface .basicBeatHelper{margin-top:6px;color:var(--ink-700);font-size:clamp(.95rem,1.45vw,1.08rem);font-weight:720;line-height:1.25}.rhythmRocketSurface .basicBeatError{margin-top:6px;color:#9f1f16;font-size:1rem;font-weight:800}.rhythmRocketSurface .basicRhythmCards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.rhythmRocketSurface .basicRhythmCard{display:grid;min-height:138px;align-content:start;gap:8px;padding:16px;border:1px solid rgba(221,226,240,.96);border-radius:18px;background:#ffffff;color:var(--ink-950);text-align:left;box-shadow:0 10px 22px rgba(35,40,58,.06);transition:transform .16s ease,box-shadow .16s ease,background .16s ease}.rhythmRocketSurface .basicRhythmCard.isSelected,.rhythmRocketSurface .basicRhythmCard:hover{transform:translateY(-3px)}.rhythmRocketSurface .basicRhythmCard.isSelected{background:var(--signal-50);border-color:rgba(93,84,245,.24);box-shadow:0 14px 28px rgba(93,84,245,.1)}.rhythmRocketSurface .basicRhythmName{font-size:clamp(1.18rem,2vw,1.55rem);font-weight:850;line-height:1}.rhythmRocketSurface .basicRhythmDescription{color:var(--ink-700);font-size:clamp(.95rem,1.4vw,1.06rem);font-weight:720;line-height:1.22}.rhythmRocketSurface .selectedNotationCard{display:grid;min-height:100%;align-content:center;justify-items:center;padding:20px;border:1px solid rgba(221,226,240,.96);border-radius:18px;background:#ffffff;text-align:center;box-shadow:inset 0 -8px 0 rgba(244,242,255,.72)}.rhythmRocketSurface .notationSvg{width:100%;max-width:460px;height:auto;min-height:170px;margin:2px 0 10px}.rhythmRocketSurface .notationLabel{margin-bottom:0;color:var(--ink-950);font-size:clamp(1.05rem,1.8vw,1.38rem);font-weight:820;line-height:1.2}.rhythmRocketSurface .infoPanels{display:grid;grid-template-columns:minmax(260px,.42fr) 1fr;gap:18px;margin-top:24px}.rhythmRocketSurface .howToPanel,.rhythmRocketSurface .teacherNote{padding:20px;background:rgba(255,255,255,.94)}.rhythmRocketSurface .howToPanel h2{font-size:clamp(1.8rem,2.7vw,2.55rem)}.rhythmRocketSurface .howToPanel ol{display:grid;gap:8px;padding-left:1.4em;margin:0;color:var(--ink-700);font-size:clamp(1rem,1.55vw,1.18rem);font-weight:760;line-height:1.3}.rhythmRocketSurface .teacherNote p:not(.eyebrow){margin-bottom:0;color:var(--ink-700);font-size:clamp(1rem,1.5vw,1.16rem);font-weight:740;line-height:1.35}.rhythmRocketSurface .teacherNote .technicalNote{margin-top:10px;color:var(--ink-600);font-size:clamp(.9rem,1.28vw,1rem)}.rhythmRocketSurface .lessonPanel{display:grid;grid-template-columns:minmax(260px,.42fr) 1fr;gap:26px;margin-top:24px;padding:24px;background:rgba(255,255,255,.94)}.rhythmRocketSurface .emptyReadout,.rhythmRocketSurface .lessonCopy p:last-child,.rhythmRocketSurface .sectionHeader p,.rhythmRocketSurface .statusText,.rhythmRocketSurface .teacherNote{color:var(--ink-700);font-size:clamp(1rem,1.6vw,1.26rem);font-weight:740;line-height:1.35}.rhythmRocketSurface .beatLanes{display:grid;gap:12px}.rhythmRocketSurface .beatLane{display:grid;grid-template-columns:150px 1fr;gap:14px;align-items:center;opacity:.46;transition:transform .16s ease,opacity .16s ease}.rhythmRocketSurface .beatLane.isActive{opacity:1}.rhythmRocketSurface .laneLabel{display:grid;grid-template-columns:48px 1fr;gap:10px;align-items:center}.rhythmRocketSurface .laneLabel span{display:grid;width:48px;height:48px;place-items:center;border:1px solid rgba(221,226,240,.96);border-radius:999px;background:#ffffff;color:var(--signal-800);font-size:1.35rem;font-weight:850}.rhythmRocketSurface .laneLabel strong{font-size:clamp(1rem,1.7vw,1.35rem)}.rhythmRocketSurface .quarterContainer{display:flex;justify-content:space-between;gap:12px;min-height:72px;padding:14px;border:1px solid rgba(221,226,240,.96);border-radius:999px;background:#f8faff}.rhythmRocketSurface .laneDot{width:clamp(30px,5vw,44px);height:clamp(30px,5vw,44px);align-self:center;border:1px solid rgba(93,84,245,.2);border-radius:999px;background:#ffffff}.rhythmRocketSurface .beatLane.isActive .laneDot{background:var(--signal-700)}.rhythmRocketSurface .beatLane.isPlaying .laneDot{animation:gentlePulse .82s ease-in-out infinite}.rhythmRocketSurface .beatLane.isPlaying:nth-child(2) .laneDot{animation-duration:.7s}.rhythmRocketSurface .beatLane.isPlaying:nth-child(3) .laneDot{animation-duration:.6s}.rhythmRocketSurface .selectorPanel{margin-top:24px;padding:24px;background:linear-gradient(180deg,rgba(255,253,241,.96),rgba(255,255,255,.98))}.rhythmRocketSurface .sectionHeader{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:end;justify-content:space-between;margin-bottom:18px}.rhythmRocketSurface .sectionHeader p{max-width:560px;margin-bottom:8px;text-align:right}.rhythmRocketSurface .rhythmCards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.rhythmRocketSurface .rhythmCard{display:flex;min-height:320px;flex-direction:column;gap:14px;justify-content:space-between;padding:20px;border:1px solid rgba(221,226,240,.96);border-radius:22px;color:var(--ink-950);text-align:left;box-shadow:0 14px 30px rgba(35,40,58,.08);transition:transform .16s ease,box-shadow .16s ease}.rhythmRocketSurface .rhythmCard.isActive,.rhythmRocketSurface .rhythmCard:hover{transform:translateY(-4px)}.rhythmRocketSurface .rhythmCard.isActive{border-color:rgba(93,84,245,.28);box-shadow:0 18px 34px rgba(93,84,245,.14)}.rhythmRocketSurface .rhythmCard3{background:linear-gradient(180deg,#fff8ea,#ffffff)}.rhythmRocketSurface .rhythmCard4{background:linear-gradient(180deg,#eaf0ff,#ffffff)}.rhythmRocketSurface .rhythmCard5{background:linear-gradient(180deg,#f3eafe,#ffffff)}.rhythmRocketSurface .cardTopline{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between}.rhythmRocketSurface .visualSymbol{display:grid;width:64px;height:64px;place-items:center;border:1px solid rgba(221,226,240,.96);border-radius:999px;background:#ffffff;font-size:2rem;box-shadow:0 8px 18px rgba(35,40,58,.06)}.rhythmRocketSurface .selectedMark{min-height:42px;padding:8px 14px;border:1px solid rgba(221,226,240,.96);border-radius:999px;background:rgba(255,255,255,.82);font-size:1rem;font-weight:820}.rhythmRocketSurface .rhythmCard.isActive .selectedMark{background:#ffffff}.rhythmRocketSurface .pulseNumber{font-size:clamp(4rem,8vw,6rem);color:var(--signal-800);font-weight:850;line-height:.85}.rhythmRocketSurface .cardTitle{display:block;font-size:clamp(1.35rem,2.3vw,1.95rem);font-weight:850;line-height:1.05}.rhythmRocketSurface .cardDescription{display:block;color:var(--ink-700);font-size:clamp(.98rem,1.5vw,1.15rem);font-weight:720;line-height:1.25}.rhythmRocketSurface .comboSection{margin-top:22px}.rhythmRocketSurface .comboButtons{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:10px}.rhythmRocketSurface .comboButton{min-height:60px;border:1px solid rgba(221,226,240,.96);border-radius:999px;background:#ffffff;color:var(--ink-850);font-size:clamp(.95rem,1.35vw,1.08rem);font-weight:800;box-shadow:0 8px 18px rgba(35,40,58,.06)}.rhythmRocketSurface .comboButton.pairCombo{background:var(--indigo-50);transform:scale(1.03)}.rhythmRocketSurface .comboButton.allCombo{background:var(--paper-50)}.rhythmRocketSurface .comboButton.clearCombo{background:var(--surface-subtle)}.rhythmRocketSurface .comboButton[aria-pressed=true]{background:var(--signal-50);border-color:rgba(93,84,245,.28);color:var(--signal-800);box-shadow:0 10px 22px rgba(93,84,245,.1)}.rhythmRocketSurface .controlPanel{display:grid;grid-template-columns:minmax(280px,.42fr) 1fr;gap:22px;margin-top:24px;padding:24px;background:linear-gradient(180deg,rgba(234,240,255,.9),rgba(255,255,255,.98))}.rhythmRocketSurface .playbackPanel{display:grid;gap:16px;align-content:center}.rhythmRocketSurface .playButton{width:min(100%,300px);min-height:100px;border:1px solid rgba(93,84,245,.2);border-radius:999px;background:linear-gradient(180deg,var(--signal-700),var(--signal-800));color:#ffffff;font-size:clamp(1.85rem,3.4vw,3rem);font-weight:850;box-shadow:0 16px 32px rgba(75,66,227,.2)}.rhythmRocketSurface .errorText,.rhythmRocketSurface .statusText{margin-bottom:0}.rhythmRocketSurface .errorText{color:#9f1f16;font-size:1.08rem;font-weight:800}.rhythmRocketSurface .speedSliderPanel{display:flex;min-width:0;flex-direction:column;justify-content:center;gap:18px}.rhythmRocketSurface .speedSliderLabel{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:baseline;justify-content:space-between;color:var(--ink-950);font-size:clamp(1.3rem,2.4vw,2.05rem);font-weight:850}.rhythmRocketSurface .speedSliderLabel span{color:var(--ink-600);font-size:clamp(.95rem,1.45vw,1.12rem)}.rhythmRocketSurface .speedSlider{width:100%;min-height:64px;accent-color:var(--signal-700)}.rhythmRocketSurface .speedSlider::-webkit-slider-runnable-track{height:18px;border:1px solid rgba(93,84,245,.18);border-radius:999px;background:linear-gradient(90deg,var(--paper-100),var(--indigo-100),var(--signal-100))}.rhythmRocketSurface .speedSlider::-webkit-slider-thumb{width:48px;height:48px;margin-top:-16px;border:2px solid var(--signal-700);border-radius:999px;background:#ffffff;box-shadow:0 8px 18px rgba(75,66,227,.18);-webkit-appearance:none;appearance:none}.rhythmRocketSurface .speedSlider::-moz-range-track{height:18px;border:1px solid rgba(93,84,245,.18);border-radius:999px;background:linear-gradient(90deg,var(--paper-100),var(--indigo-100),var(--signal-100))}.rhythmRocketSurface .speedSlider::-moz-range-thumb{width:44px;height:44px;border:2px solid var(--signal-700);border-radius:999px;background:#ffffff;box-shadow:0 8px 18px rgba(75,66,227,.18)}.rhythmRocketSurface .sliderHelper{margin:-6px 0 0;color:var(--ink-700);font-size:clamp(.95rem,1.45vw,1.08rem);font-weight:740}.rhythmRocketSurface .sliderEndpoints{display:flex;justify-content:space-between;color:var(--ink-600);font-size:clamp(.88rem,1.3vw,1rem);font-weight:740}.rhythmRocketSurface .frequencyPanel{display:grid;grid-template-columns:minmax(230px,.34fr) 1fr;gap:20px;align-items:center;margin-top:24px;padding:24px;background:linear-gradient(180deg,rgba(255,253,241,.96),rgba(255,255,255,.98))}.rhythmRocketSurface .frequencyList{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:0;margin:0;list-style:none}.rhythmRocketSurface .emptyReadout,.rhythmRocketSurface .frequencyList li{display:flex;min-height:88px;align-items:center;gap:12px;padding:16px;border:1px dashed rgba(22,106,73,.28);border-radius:18px;background:#ffffff;color:var(--ink-950);font-size:clamp(1rem,1.8vw,1.38rem);font-weight:820}.rhythmRocketSurface .readoutSymbol{font-size:1.7rem}.rhythmRocketSurface .emptyReadout{margin-bottom:0}.rhythmRocketSurface .basicBeatButton:focus-visible,.rhythmRocketSurface .basicRhythmCard:focus-visible,.rhythmRocketSurface .comboButton:focus-visible,.rhythmRocketSurface .playButton:focus-visible,.rhythmRocketSurface .rhythmCard:focus-visible,.rhythmRocketSurface .speedSlider:focus-visible{box-shadow:0 0 0 4px rgba(91,92,235,.18);outline:2px solid var(--signal-700);outline-offset:3px}@keyframes gentlePulse{0%,to{transform:scale(1)}50%{transform:scale(1.16)}}@media (max-width:980px){.rhythmRocketSurface .basicRhythmLayout,.rhythmRocketSurface .controlPanel,.rhythmRocketSurface .frequencyPanel,.rhythmRocketSurface .heroPanel,.rhythmRocketSurface .infoPanels,.rhythmRocketSurface .launchSequence,.rhythmRocketSurface .lessonPanel,.rhythmRocketSurface .pulseEngineGrid{grid-template-columns:1fr}.rhythmRocketSurface .sectionHeader p{text-align:left}.rhythmRocketSurface .rhythmCards{grid-template-columns:1fr}.rhythmRocketSurface .launchSequenceRail{grid-template-columns:repeat(4,minmax(0,1fr))}.rhythmRocketSurface .basicRhythmCards{grid-template-columns:repeat(2,minmax(0,1fr))}.rhythmRocketSurface .basicRhythmListenPanel{grid-template-columns:1fr}.rhythmRocketSurface .comboButtons,.rhythmRocketSurface .frequencyList{grid-template-columns:repeat(2,minmax(0,1fr))}.rhythmRocketSurface .speedBadge{width:100%}}@media (max-width:640px){.rhythmRocketSurface .appShell{width:min(100% - 20px,1180px);padding-top:12px}.rhythmRocketSurface .basicRhythmsPanel,.rhythmRocketSurface .controlPanel,.rhythmRocketSurface .frequencyPanel,.rhythmRocketSurface .heroPanel,.rhythmRocketSurface .launchSequenceStep,.rhythmRocketSurface .lessonPanel,.rhythmRocketSurface .selectorPanel{padding:16px}.rhythmRocketSurface .beatLane{grid-template-columns:1fr}.rhythmRocketSurface .fourBeatStrip{grid-template-columns:repeat(2,minmax(0,1fr))}.rhythmRocketSurface .basicRhythmCards,.rhythmRocketSurface .comboButtons,.rhythmRocketSurface .frequencyList,.rhythmRocketSurface .launchSequenceRail{grid-template-columns:1fr}.rhythmRocketSurface .playButton{width:100%}}@media (prefers-reduced-motion:reduce){.rhythmRocketSurface,.rhythmRocketSurface *,.rhythmRocketSurface :after,.rhythmRocketSurface :before{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}