:root{--wb-canvas: #ffffff;--wb-surface-raised: #fafafa;--wb-surface-inset: #f4f5f7;--wb-surface-code: #0e0f12;--wb-hairline: #e5e7eb;--wb-hairline-strong: #101113;--wb-ink: #101113;--wb-body: #2a2c30;--wb-charcoal: #4b4f55;--wb-mute: #6b7079;--wb-ash: #8a8f97;--wb-stone: #bfc3c9;--wb-on-dark: #fafafa;--wb-primary: #ea2804;--wb-primary-deep: #c01f00;--wb-on-primary: #ffffff;--wb-ring-focus: #ea2804;--wb-ring-focus-soft: rgba(234, 40, 4, .18);--wb-selection: rgba(234, 40, 4, .16);--wb-success: #0e8a4a;--wb-success-soft: #e6f6ed;--wb-warning: #a3691b;--wb-warning-soft: #fdf3df;--wb-danger: #b91c1c;--wb-danger-soft: #fdecec;--wb-info: #1f5fbf;--wb-info-soft: #e6effc;--wb-shadow-raised: 0 1px 0 rgba(16, 17, 19, .04), 0 1px 2px rgba(16, 17, 19, .04);--wb-shadow-popover: 0 8px 24px rgba(16, 17, 19, .1), 0 1px 0 rgba(16, 17, 19, .04);--wb-shadow-modal: 0 24px 64px rgba(16, 17, 19, .18), 0 1px 0 rgba(16, 17, 19, .06);--wb-shadow-inset: inset 0 1px 0 rgba(16, 17, 19, .04);--wb-font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--wb-font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0}html{background:var(--wb-canvas);color:var(--wb-ink);font-family:var(--wb-font-sans);font-size:15px;line-height:1.5;-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;text-size-adjust:100%}body{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}::selection{background:var(--wb-selection)}[hidden]{display:none!important}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer;background:none;border:0;padding:0}a{color:var(--wb-primary);text-decoration:none}a:hover,a:focus-visible{text-decoration:underline;text-underline-offset:3px}:focus-visible{outline:2px solid var(--wb-ring-focus);outline-offset:2px;box-shadow:0 0 0 5px var(--wb-ring-focus-soft);border-radius:4px}.skip-link{position:absolute;left:-10000px;top:8px;background:var(--wb-ink);color:var(--wb-on-dark);padding:8px 12px;border-radius:6px;z-index:100}.skip-link:focus{left:8px}.noscript{padding:24px;background:var(--wb-warning-soft);color:var(--wb-warning);text-align:center;font-size:14px}.wb-toolbar{background:var(--wb-canvas);border-bottom:1px solid var(--wb-hairline);position:sticky;top:0;z-index:10}.wb-toolbar__inner{height:52px;max-width:1280px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:16px}.wb-mark{display:inline-flex;align-items:center;gap:8px;color:var(--wb-ink);font-weight:700;font-size:15px;letter-spacing:-.01em;text-decoration:none}.wb-mark:hover{text-decoration:none;color:var(--wb-primary)}.wb-mark__logo{display:inline-flex;width:16px;height:16px}.wb-toolbar__title{font-size:13px;font-weight:600;color:var(--wb-charcoal);padding:4px 10px;background:var(--wb-surface-inset);border-radius:8px;letter-spacing:-.01em}.wb-toolbar__actions{margin-left:auto;display:inline-flex;align-items:center;gap:6px}.wb-button-icon{width:32px;height:32px;background:var(--wb-canvas);border:1px solid var(--wb-hairline);border-radius:8px;color:var(--wb-charcoal);display:inline-flex;align-items:center;justify-content:center;transition:background .16s ease-out,color .16s ease-out,border-color .16s ease-out}.wb-button-icon:hover:not(:disabled){background:var(--wb-surface-inset);color:var(--wb-ink)}.wb-button-icon:disabled{color:var(--wb-stone);cursor:not-allowed}@media (max-width: 480px){.wb-toolbar__inner{padding:0 14px;gap:10px}.wb-toolbar__title{display:none}}.wb-footer{margin-top:auto;background:var(--wb-canvas);border-top:1px solid var(--wb-hairline);font-size:12px;color:var(--wb-mute)}.wb-footer__inner{max-width:1280px;margin:0 auto;padding:14px 20px;display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px}.wb-footer a{color:var(--wb-mute)}.wb-footer a:hover{color:var(--wb-primary)}.wb-footer__spacer{flex:1;min-width:12px}.wb-footer__sep{color:var(--wb-stone)}@media (max-width: 600px){.wb-footer__inner{padding:14px}.wb-footer__sep{display:none}}.wb-modal[hidden]{display:none}.wb-modal{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:16px}.wb-modal__scrim{position:absolute;inset:0;background:#1011138c}.wb-modal__panel{position:relative;background:var(--wb-canvas);border-radius:16px;padding:24px;box-shadow:var(--wb-shadow-modal);width:min(480px,100%);max-height:calc(100dvh - 32px);overflow:auto;font-family:var(--wb-font-sans);color:var(--wb-ink)}.wb-modal__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.wb-modal__title{margin:0;font-size:18px;font-weight:600;letter-spacing:-.01em}.wb-modal__body{margin:0 0 16px;font-size:14px;color:var(--wb-body);line-height:1.55}.wb-modal__foot{margin-top:16px;display:flex;justify-content:flex-end}.wb-modal__actions{display:flex;flex-wrap:wrap;gap:10px}.wb-shortcuts{margin:0;padding:0;display:grid;grid-template-columns:1fr;gap:6px}.wb-shortcuts>div{display:grid;grid-template-columns:90px 1fr;gap:12px;align-items:center;padding:8px 0;border-bottom:1px solid var(--wb-hairline);font-size:13px}.wb-shortcuts>div:last-child{border-bottom:0}.wb-shortcuts dt{margin:0}.wb-shortcuts dd{margin:0;color:var(--wb-body)}kbd{display:inline-block;background:var(--wb-canvas);border:1px solid var(--wb-hairline);border-radius:6px;padding:2px 8px;font-family:var(--wb-font-mono);font-size:12px;color:var(--wb-ink);box-shadow:var(--wb-shadow-inset)}.wb-btn{height:36px;border-radius:8px;padding:0 16px;font-size:14px;font-weight:600;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;transition:background .16s ease-out,border-color .16s ease-out,transform 80ms ease-out}.wb-btn--primary{background:var(--wb-primary);color:var(--wb-on-primary)}.wb-btn--primary:hover{background:var(--wb-primary-deep)}.wb-btn--primary:active{transform:translateY(1px)}.wb-btn--secondary{background:var(--wb-canvas);color:var(--wb-ink);border-color:var(--wb-hairline)}.wb-btn--secondary:hover{background:var(--wb-surface-inset)}.wb-toast[hidden]{display:none}.wb-toast{position:fixed;bottom:16px;left:50%;transform:translate(-50%);background:var(--wb-ink);color:var(--wb-on-dark);border-radius:8px;padding:12px 16px;box-shadow:var(--wb-shadow-popover);font-size:13px;z-index:60;max-width:calc(100vw - 32px)}.interior{--bg: #fdf8ec;--bg-soft: #f6efdb;--bg-card: #fffdf7;--bg-card-back: #f4ecd6;--rule: #e8dcb8;--border: #e6dcc1;--border-strong: #cfc197;--text: #2a1f0a;--text-muted: #7a6a4a;--text-faint: #a89876;--accent: #6d28d9;--accent-deep: #5b21b6;--accent-2: #d97706;--accent-soft: rgba(109, 40, 217, .1);--accent-2-soft: rgba(217, 119, 6, .12);--danger: #b91c1c;--ok: #15803d;--radius-sm: 8px;--radius: 14px;--radius-lg: 20px;--radius-tile: 12px;--shadow-sm: 0 2px 6px rgba(58, 42, 12, .06);--shadow: 0 14px 36px rgba(58, 42, 12, .1), 0 1px 0 rgba(58, 42, 12, .04);--shadow-glow: 0 0 0 4px rgba(109, 40, 217, .14), 0 22px 50px rgba(109, 40, 217, .16);--font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-serif: ui-serif, Georgia, "Iowan Old Style", "Times New Roman", "Apple Garamond", serif;--font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;flex:1;font-family:var(--font-sans);color:var(--text);background-color:var(--bg);background-image:radial-gradient(900px 600px at 50% -10%,rgba(217,119,6,.1),transparent 70%),radial-gradient(700px 500px at 100% 110%,rgba(109,40,217,.06),transparent 70%);background-attachment:fixed;padding:24px 20px 40px}.interior__column{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:20px;min-height:calc(100dvh - 112px)}.interior__topbar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;padding:4px 0 8px}.brand-mark{display:inline-flex;align-items:center;gap:8px;color:var(--text);text-decoration:none;font-weight:700;font-size:15px;letter-spacing:-.01em;justify-self:start}.brand-mark:hover{text-decoration:none}.brand-mark__logo{display:inline-flex;width:14px;height:14px;filter:drop-shadow(0 4px 10px rgba(109,40,217,.25))}.deck-title{justify-self:center;font-size:14px;font-weight:600;color:var(--text-muted);font-family:var(--font-mono);text-align:center;max-width:320px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar__right{justify-self:end;display:inline-flex;align-items:center;gap:8px}.streak{background:var(--accent-2-soft);color:var(--accent-2);padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;font-family:var(--font-mono);display:inline-flex;align-items:center;gap:4px;letter-spacing:.04em}.streak[data-pulse="1"]{animation:streak-chime .36s ease-out}@media (max-width: 480px){.brand-mark__word{display:none}}.stage{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:460px;padding:20px 0;position:relative}.dropzone{width:100%;max-width:560px;background:var(--bg);border:2px dashed var(--border-strong);border-radius:var(--radius-lg);padding:36px 24px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;color:var(--text-muted);transition:background .2s ease-out,border-color .2s ease-out,transform .2s ease-out;cursor:pointer}.dropzone:hover,.dropzone:focus-visible{border-color:var(--accent);color:var(--text);outline:none;transform:translateY(-2px)}.dropzone[data-armed="1"]{background:var(--accent-soft);border-color:var(--accent);border-style:solid;color:var(--text)}.dropzone__icon{color:var(--accent)}.dropzone__head{font-size:18px;font-weight:600;color:var(--text)}.dropzone__sub{font-size:13px;color:var(--text-muted)}.status-card{width:100%;max-width:520px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 28px;box-shadow:var(--shadow);text-align:center;position:relative}.status-card:before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:4px;border-radius:0 4px 4px 0;background:linear-gradient(180deg,var(--accent),var(--accent-2))}.status-card__title{font-family:var(--font-serif);font-size:22px;color:var(--text)}.status-card__sub{margin-top:10px;font-family:var(--font-mono);font-size:13px;color:var(--text-muted);letter-spacing:.04em}.error-card{width:100%;max-width:520px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;text-align:center;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;align-items:center;gap:10px}.error-card__title{font-family:var(--font-serif);font-size:20px;color:var(--text)}.error-card__sub{font-size:14px;color:var(--text-muted);max-width:36ch}.deck[hidden]{display:none}.deck{position:relative;width:min(100%,560px);aspect-ratio:5 / 4;perspective:1400px;margin:0 auto}.card{position:absolute;inset:0;border-radius:var(--radius-lg);background:var(--bg-card);border:1px solid var(--border);box-shadow:var(--shadow-sm);transform-style:preserve-3d;transform-origin:center;will-change:transform,opacity;transition:transform .22s ease-out,box-shadow .22s ease-out}.card[data-stack="1"]{transform:translate(8px,10px) scale(.985);z-index:2;opacity:.92}.card[data-stack="2"]{transform:translate(16px,20px) scale(.97);z-index:1;opacity:.78}.card[data-stack="3"]{transform:translate(24px,30px) scale(.955);z-index:0;opacity:.62}.card[data-active="1"]{z-index:5;box-shadow:var(--shadow)}.card[data-active="1"]:hover{transform:translateY(-3px) rotate(.4deg);box-shadow:var(--shadow-glow)}.card[data-flipped="1"]{transform:rotateY(180deg)}.card[data-flipped="1"]:hover{transform:rotateY(180deg) translateY(-3px) rotate(-.4deg)}.card[data-flipping="1"]{animation:card-flip .55s cubic-bezier(.4,0,.2,1)}.card[data-leaving="1"]{animation:card-deal .32s ease-out forwards}.card[data-arriving="1"]{animation:card-arrive .4s cubic-bezier(.34,1.4,.64,1)}.card__face{position:absolute;inset:0;padding:28px 30px 22px;display:flex;flex-direction:column;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:var(--radius-lg)}.card__face--front{background:var(--bg-card);border-radius:var(--radius-lg)}.card__face--back{background:var(--bg-card-back);transform:rotateY(180deg);border-radius:var(--radius-lg)}.card__face:before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:0 4px 4px 0;background:linear-gradient(180deg,var(--accent),var(--accent-2));opacity:.85}.card__eyebrow{display:flex;justify-content:space-between;align-items:center;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--text-faint);margin-bottom:16px}.card__eyebrow-letter{font-weight:700;color:var(--accent)}.card__face--back .card__eyebrow-letter{color:var(--accent-2)}.card__counter{font-feature-settings:"tnum" on}.card__body{flex:1;font-family:var(--font-serif);font-size:22px;line-height:1.4;color:var(--text);display:flex;align-items:center;justify-content:center;text-align:center;padding:0 8px;hyphens:auto;overflow-wrap:anywhere}.card__face--back .card__body{font-size:18px;line-height:1.55;font-weight:400}.card__rule{height:1px;background:var(--rule);margin:14px 0 12px}.card__foot{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:12px;color:var(--text-muted);font-family:var(--font-sans)}.card__source{font-family:var(--font-mono);font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:50%}.card__hint{color:var(--text-faint);font-size:11px}.card__actions{display:flex;gap:8px}.pill{border-radius:999px;padding:6px 14px;font-size:12px;font-weight:600;border:1px solid transparent;font-family:var(--font-sans);display:inline-flex;align-items:center;gap:6px;transition:background .16s ease-out,transform 80ms ease-out}.pill--ok{background:var(--accent-2);color:#fff}.pill--ok:hover{background:#c2660a}.pill--ok:active{transform:translateY(1px)}.pill--miss{background:transparent;border-color:var(--accent);color:var(--accent)}.pill--miss:hover{background:var(--accent-soft)}.stage-foot[hidden]{display:none}.stage-foot{display:flex;flex-direction:column;gap:12px;padding-top:12px}.progress{width:100%;height:4px;background:var(--bg-soft);border-radius:999px;overflow:hidden}.progress__fill{display:block;height:100%;width:var(--p, 0%);background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .28s ease-out}.sources{font-size:12px;color:var(--text-muted);font-family:var(--font-sans);text-align:center}.sources b{font-family:var(--font-mono);font-weight:500;color:var(--text)}.sources span.num{font-family:var(--font-mono);color:var(--text);font-feature-settings:"tnum" on}.stage-foot__actions{display:flex;justify-content:center;flex-wrap:wrap;gap:8px}.btn{height:38px;border-radius:var(--radius);padding:0 18px;font-size:14px;font-weight:600;font-family:var(--font-sans);border:1px solid transparent;display:inline-flex;align-items:center;gap:8px;transition:background .18s ease-out,transform 80ms ease-out,border-color .18s ease-out,box-shadow .18s ease-out}.btn--primary{color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 6px 18px #6d28d940}.btn--primary:hover{transform:translateY(-3px) rotate(.4deg);box-shadow:0 14px 30px #6d28d952}.btn--primary:active{transform:translateY(1px) rotate(0);box-shadow:0 4px 10px #6d28d938}.btn--secondary{background:var(--bg-card);color:var(--text);border-color:var(--border)}.btn--secondary:hover{background:var(--bg-soft);border-color:var(--border-strong)}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.ad-banner{display:block;width:100%;margin:0 auto;padding:0;text-align:center}.ad-banner__label,.ad-rail__label{display:none;font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint);margin-bottom:6px}.ad-rail{position:fixed;top:50%;transform:translateY(-50%);width:160px;display:none;z-index:1}.ad-rail--left{left:16px}.ad-rail--right{right:16px}@media (min-width: 1240px){.ad-rail{display:block}}@media (min-width: 1520px){.ad-rail{width:300px}}.adsbygoogle[data-ad-status=unfilled]{display:none!important}.ad-banner:has(.adsbygoogle[data-ad-status=filled]){padding:8px 0 4px}.ad-banner:has(.adsbygoogle[data-ad-status=filled]) .ad-banner__label,.ad-rail:has(.adsbygoogle[data-ad-status=filled]) .ad-rail__label{display:block}@media (max-width: 480px){.interior{padding:16px 14px 28px}.interior__column{gap:14px}.deck{aspect-ratio:4 / 5}.card__face{padding:22px 22px 18px}.card__body{font-size:19px}.card__face--back .card__body{font-size:16px}.stage{min-height:380px}.btn{height:44px;padding:0 20px}}@media (min-width: 760px){.card__body{font-size:26px}.card__face--back .card__body{font-size:21px}}@media (hover: none){.card[data-active="1"]:hover,.card[data-flipped="1"]:hover,.btn--primary:hover,.dropzone:hover{transform:none;box-shadow:var(--shadow-sm)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.card[data-flipping="1"],.card[data-leaving="1"],.card[data-arriving="1"]{animation:none!important}}@keyframes card-flip{0%{transform:rotateY(0)}45%{transform:rotateY(85deg)}55%{transform:rotateY(95deg)}to{transform:rotateY(180deg)}}@keyframes card-deal{0%{transform:translate(0) rotate(0);opacity:1}to{transform:translate(-12px,-28px) rotate(-3deg);opacity:0}}@keyframes card-arrive{0%{transform:scale(.94) translateY(-8px);opacity:0}60%{transform:scale(1.012) translateY(2px);opacity:1}to{transform:scale(1) translateY(0);opacity:1}}@keyframes streak-chime{0%{transform:scale(1)}50%{transform:scale(1.12);background:#d9770638}to{transform:scale(1)}}@keyframes card-breathe{0%,to{transform:scale(1)}50%{transform:scale(1.012)}}