:root{--m-amber: #d97706;--m-amber-bright: #f5a623;--m-blue: #1d4ed8;--m-blue-deep: #1e3a5f;--m-grad: linear-gradient(135deg, var(--m-amber-bright) 0%, #2870d8 42%, var(--m-blue-deep) 100%);--m-grad-hover: linear-gradient(135deg, #ffbe4d 0%, #3b82f6 45%, #244a7a 100%);--m-grad-subtle: linear-gradient( 135deg, rgba(245, 166, 35, .14) 0%, rgba(40, 112, 216, .12) 55%, rgba(30, 58, 95, .14) 100% );--m-shadow-brand: 0 4px 18px rgba(245, 166, 35, .14), 0 4px 24px rgba(29, 78, 216, .2);--m-shadow-brand-hover: 0 6px 26px rgba(245, 166, 35, .18), 0 6px 28px rgba(29, 78, 216, .24);--m-focus-ring: rgba(251, 191, 36, .65);--m-link: #fbbf24;--m-action: #0ea5e9}.App{min-height:100vh;display:flex;flex-direction:column;background:linear-gradient(145deg,#0e0e12,#121311 42%,#0e0e12)}.app-main{flex:1;max-width:980px;margin:0 auto;padding:68px 1.5rem 4rem;width:100%;box-sizing:border-box}.app-main--tool-menubar{padding-top:44px}.app-main--full{max-width:none;margin:0;width:100%;padding:68px clamp(1rem,4vw,3rem) 4rem;box-sizing:border-box}.home-page{width:100%;margin:0 auto}.app-main--full .player-hero__title{max-width:20ch}@media (min-width: 900px){.app-main--full .player-hero__title{max-width:none}}.marketing-nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:linear-gradient(90deg,#121317,#161714 45%,#1c1d1a);backdrop-filter:blur(16px) saturate(120%);-webkit-backdrop-filter:blur(16px) saturate(120%);border-bottom:1px solid rgba(255,255,255,.06);box-shadow:0 1px #ffffff08 inset}.marketing-nav__inner{max-width:1400px;margin:0 auto;min-height:52px;padding:10px clamp(.85rem,3vw,1.5rem);display:flex;align-items:center;gap:clamp(.5rem,2vw,1.25rem)}.marketing-nav__brand{display:inline-flex;align-items:center;gap:10px;background:none;border:none;cursor:pointer;padding:6px 10px;margin:0 -10px 0 0;border-radius:8px;font:inherit;color:#fff;font-weight:700;letter-spacing:-.02em;transition:opacity .15s ease,background .15s ease}.marketing-nav__brand:hover{opacity:.92;background:#ffffff0d}.marketing-nav__brand:focus-visible{outline:2px solid rgba(255,255,255,.45);outline-offset:2px}.marketing-nav__logo{width:28px;height:28px;flex-shrink:0;border-radius:8px;object-fit:contain;box-shadow:0 0 0 1px #ffffff0f}.marketing-nav__wordmark{font-weight:700;font-size:1.06rem;letter-spacing:-.03em;color:#fff}.marketing-nav__links{display:flex;align-items:center;justify-content:center;flex:1;min-width:0}.marketing-nav__link-rail{display:inline-flex;align-items:center;gap:2px;padding:0;background:transparent;border:none;box-shadow:none}.marketing-nav__link{background:none;border:none;padding:8px 14px;border-radius:8px;color:#f2f2f4;font-family:inherit;font-size:.875rem;font-weight:700;letter-spacing:-.02em;cursor:pointer;transition:color .15s ease,background .15s ease}.marketing-nav__link:hover{color:#fff;background:#ffffff0f}.marketing-nav__link:focus-visible{outline:2px solid rgba(255,255,255,.45);outline-offset:1px}.marketing-nav__account{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-shrink:0}.marketing-nav__auth{display:flex;align-items:center;gap:8px}.marketing-nav__session{display:flex;align-items:center;gap:10px;max-width:min(100%,320px)}.marketing-nav__muted{display:inline-flex;align-items:center;min-width:72px;min-height:36px}.marketing-nav__skeleton{display:block;width:72px;height:10px;border-radius:999px;background:linear-gradient(90deg,#ffffff0f,#ffffff1f,#ffffff0f);background-size:200% 100%;animation:marketing-nav-shimmer 1.2s ease-in-out infinite}@keyframes marketing-nav-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}@media (prefers-reduced-motion: reduce){.marketing-nav__skeleton{animation:none;background:#ffffff14}}.marketing-nav__email{max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:6px 12px;border-radius:8px;color:#ffffffb8;font-size:.8rem;font-weight:600;background:#ffffff0a;border:1px solid rgba(255,255,255,.08)}.marketing-nav__btn{padding:9px 18px;border-radius:8px;font-family:inherit;font-size:.875rem;font-weight:700;letter-spacing:-.02em;cursor:pointer;border:none;transition:background .15s ease,color .15s ease,border-color .15s ease,opacity .15s ease,transform .12s ease}.marketing-nav__btn:active{transform:scale(.98)}.marketing-nav__btn:focus-visible{outline:2px solid rgba(255,255,255,.45);outline-offset:2px}.marketing-nav__btn--ghost{background:transparent;color:#fff;border:1px solid transparent}.marketing-nav__btn--ghost:hover{background:#ffffff12;color:#fff}.marketing-nav__btn--primary{color:#121317;border:1px solid rgba(255,255,255,.12);background:#e8e8e8;box-shadow:none}.marketing-nav__btn--primary:hover{background:#f6f6f6;color:#0a0a0a;border-color:#fff3}.marketing-nav__btn--primary:active{background:#dcdcdc;color:#121317}@media (max-width: 640px){.marketing-nav__inner{min-height:48px;padding:8px .65rem;gap:.4rem}.marketing-nav__wordmark{display:none}.marketing-nav__link-rail{padding:0;gap:0}.marketing-nav__link{padding:7px 12px;font-size:.8125rem}.marketing-nav__auth{gap:6px}.marketing-nav__btn{padding:8px 14px;font-size:.8125rem}.marketing-nav__session{max-width:min(100%,200px)}.marketing-nav__email{max-width:100px;padding:6px 10px;font-size:.75rem}}.menubar{position:fixed;top:0;left:0;right:0;z-index:1000;height:32px;display:flex;align-items:center;justify-content:flex-start;padding:0 12px;gap:8px;background:linear-gradient(90deg,#121317,#161714 45%,#1c1d1a);backdrop-filter:blur(12px) saturate(120%);-webkit-backdrop-filter:blur(12px) saturate(120%);border-bottom:1px solid 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.1s}.menubar__item:hover{background:#ffffff1a;color:#fff}.menubar__shortcut{font-size:12px;color:#ffffff59;margin-left:24px}.menubar__item:hover .menubar__shortcut{color:#ffffffb3}.menubar__separator{height:1px;background:#ffffff14;margin:4px 12px}.player{display:flex;flex-direction:column;gap:1.25rem;padding-top:1rem}.player__message{text-align:center;padding:4rem 2rem;color:#6e6e73;font-size:1.1rem}.player__message code{display:inline-block;margin-top:.5rem;padding:.3rem .75rem;background:#ffffff0f;border-radius:6px;font-size:.95rem;color:#e8e8ed}.player__hint{font-size:.9rem;color:#6e6e73;margin-top:.25rem}.player__error{background:#ff3b3014;border:1px solid rgba(255,59,48,.25);border-radius:12px;padding:1.25rem 1.5rem;text-align:center}.player__error p:first-child{font-weight:600;color:#ff6961}.player__error-detail{font-size:.85rem;color:#8c8c8c;margin-top:.5rem;word-break:break-word}.player-landing{display:flex;flex-direction:column;gap:1.25rem}.player-landing--minimal{gap:.75rem}.player-hero{position:relative;overflow:hidden;padding:clamp(2rem,5vw,3.5rem);border-radius:28px;background:radial-gradient(circle at 18% 22%,rgba(255,159,10,.12),transparent 38%),radial-gradient(circle at top left,rgba(36,160,255,.14),transparent 34%),radial-gradient(circle at 88% 78%,rgba(52,199,89,.12),transparent 32%),radial-gradient(circle at top right,rgba(255,159,10,.14),transparent 28%),linear-gradient(180deg,#1c1c26f5,#12121afa);border:1px solid rgba(255,255,255,.08);box-shadow:0 28px 60px #00000052,inset 0 1px #ffffff0d}.player-hero--minimal{padding:clamp(1.5rem,4vw,2.75rem)}.player-hero__glow{position:absolute;width:260px;height:260px;border-radius:50%;filter:blur(60px);opacity:.55;pointer-events:none}.player-hero__glow--blue{top:-120px;left:-70px;background:linear-gradient(145deg,#24a0ff6b,#34c75938)}.player-hero__glow--orange{right:-80px;bottom:-120px;background:linear-gradient(145deg,#ff9f0a61,#ffb4501f)}.player-hero__eyebrow,.player-section__eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 1rem;padding:.4rem .75rem;border-radius:999px;background:#ffffff0f;border:1px solid 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#ffffff08}.player-section__header{max-width:760px;margin-bottom:1.25rem}.player-section__title{margin:0;font-size:1.8rem;letter-spacing:-.03em;color:#f0f0f5}.player-section__copy{margin:.8rem 0 0;line-height:1.75;color:#a7a7b3}.player-card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:1rem}.player-card{padding:1.25rem;border-radius:18px;background:linear-gradient(180deg,#20202af5,#15151df5);border:1px solid rgba(255,255,255,.07)}.player-card__step{display:inline-flex;align-items:center;justify-content:center;min-width:2.1rem;height:2.1rem;padding:0 .6rem;border-radius:999px;background:linear-gradient(135deg,#ff9f0a38,#34c7592e);color:#ffd49a;font-size:.82rem;font-weight:700;letter-spacing:.08em}.player-card__title,.player-faq__question{margin:.95rem 0 0;font-size:1.04rem;color:#f3f3f7}.player-card__copy,.player-faq__answer{margin:.65rem 0 0;color:#a7a7b3;line-height:1.7}.player-faq{display:grid;gap:.95rem}.player-faq__item{padding:1.15rem 1.2rem;border-radius:18px;background:#ffffff08;border:1px solid rgba(255,255,255,.06)}.score-header{text-align:center;padding:.5rem 0}.sheet-tuplet-toggle{display:flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:.4rem .6rem;font-size:.8rem;color:#9a9aa5;padding:.25rem .5rem .6rem;cursor:pointer;-webkit-user-select:none;user-select:none}.sheet-tuplet-toggle input[type=checkbox]{cursor:pointer;accent-color:#7a7aff}.sheet-tuplet-toggle__hint{font-size:.72rem;color:#6a6a75;flex-basis:100%;text-align:center}.score-header__title{font-family:Georgia,Times New Roman,serif;font-size:1.6rem;font-weight:700;color:#f0f0f5;letter-spacing:-.01em}.score-header__composer{font-size:.95rem;color:#7a7a85;margin-top:.2rem;font-style:italic}.score-header__editable{display:inline-block;background:transparent;border:1px solid transparent;padding:.15rem .6rem;border-radius:8px;cursor:text;max-width:100%;text-align:center;transition:background .12s ease,border-color .12s ease,color .12s 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