:root{--ink:#17364f;--muted:#5c7182;--line:#d9e4ec;--soft:#f5f9fc;--brand:#2f749e;--brand2:#4f93b7;--accent:#d58b3c;--good:#26785e;--bad:#a84343;--shadow:0 12px 34px rgba(24,56,82,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.6}a{color:#256b96}img{max-width:100%}.container{width:min(1160px,calc(100% - 36px));margin:auto}.topbar{background:#16354e;color:#eaf4fa;font-size:.83rem}.topbar .container{display:flex;justify-content:space-between;gap:20px;padding:7px 0}.topbar a{color:#fff;text-decoration:none}.site-header{background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}.header-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{text-decoration:none;color:var(--ink);font-weight:900;letter-spacing:-.02em;font-size:1.15rem}.brand small{display:block;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#6b7e8d}.nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.nav a{text-decoration:none;color:#304f66;font-weight:700;font-size:.93rem;padding:9px 11px;border-radius:9px}.nav a:hover,.nav a[aria-current="page"]{background:#edf5f9;color:#1f638c}.hero{background:radial-gradient(circle at 80% 10%,#dceef7 0,transparent 34%),linear-gradient(180deg,#f9fcfe,#fff);border-bottom:1px solid #e4edf3}.hero .container{padding:64px 0 56px}.eyebrow{font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;font-weight:900;color:#35789f;margin:0 0 10px}.hero h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.02;letter-spacing:-.045em;max-width:850px;margin:0 0 18px}.hero p.lead{font-size:1.12rem;max-width:780px;color:var(--muted);margin:0 0 24px}.actions{display:flex;gap:12px;flex-wrap:wrap}.btn{border:0;border-radius:10px;padding:12px 17px;font:800 .95rem/1.2 inherit;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;background:#276f99;color:#fff;box-shadow:0 6px 16px rgba(39,111,153,.18)}.btn.secondary{background:#fff;color:#285e7d;border:1px solid #cbdce7;box-shadow:none}.btn.danger{background:#fff;color:#9e3838;border:1px solid #e4c3c3;box-shadow:none}.section{padding:58px 0}.section.soft{background:var(--soft)}.section-head{display:grid;grid-template-columns:1fr minmax(280px,470px);gap:36px;align-items:end;margin-bottom:26px}.section h2{font-size:clamp(1.65rem,3vw,2.45rem);line-height:1.12;letter-spacing:-.03em;margin:0 0 8px}.section-head p{margin:0;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:17px;padding:22px;box-shadow:0 6px 22px rgba(29,60,84,.05)}.card h2,.card h3{margin:0 0 7px}.card p{color:var(--muted);margin:0 0 13px}.tag{display:inline-block;font-size:.7rem;letter-spacing:.09em;text-transform:uppercase;font-weight:900;color:#2e759e;background:#edf7fb;border-radius:999px;padding:5px 8px;margin-bottom:9px}.game-card{display:flex;flex-direction:column}.game-card .metric{font-size:.83rem;font-weight:800;color:#60788b;margin-top:auto;padding-top:10px}.game-card a.stretch{font-weight:800;text-decoration:none}.game-card a.stretch:after{content:" →"}.best{border-top:1px solid #e6eef3;margin-top:14px;padding-top:12px;font-size:.87rem;color:#677c8c}.best strong{color:#214f6d}.dashboard{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.dash-item{border:1px solid #d9e5ed;border-radius:13px;padding:15px;background:#fff}.dash-item span{display:block;color:#697e8e;font-size:.79rem}.dash-item strong{display:block;font-size:1.2rem;margin-top:2px}.content{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start}.prose{font-size:1.02rem}.prose h2{margin-top:34px}.aside{border:1px solid var(--line);border-radius:16px;padding:20px;background:#fbfdfe;position:sticky;top:98px}.aside h3{margin-top:0}.aside a{display:block;padding:7px 0;text-decoration:none;font-weight:700}.challenge-shell{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.challenge-box{border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow);overflow:hidden}.challenge-top{padding:22px;border-bottom:1px solid #e6eef3;display:flex;justify-content:space-between;align-items:center;gap:15px}.challenge-top h2{margin:0}.scoreboard{display:flex;gap:18px;flex-wrap:wrap}.score-stat{min-width:90px}.score-stat span{display:block;color:#728594;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:900}.score-stat strong{font-size:1.32rem}.play-area{min-height:390px;padding:24px;display:flex;align-items:center;justify-content:center;position:relative;background:linear-gradient(180deg,#fbfdff,#f1f7fa)}.center{text-align:center}.big-number{font-size:clamp(3rem,11vw,7rem);font-weight:950;letter-spacing:-.06em;line-height:1}.message{font-size:1.08rem;color:#4f6678;margin:8px 0 18px}.reaction-pad{width:min(640px,100%);height:330px;border-radius:18px;border:1px solid #cadae4;display:flex;align-items:center;justify-content:center;text-align:center;padding:20px;cursor:pointer;user-select:none;background:#eef5f8;transition:background .15s,color .15s}.reaction-pad.waiting{background:#f5e6d3;color:#7a4b1f}.reaction-pad.go{background:#d8f1e7;color:#155a42}.reaction-pad.result{background:#e5f2f8}.click-target{width:190px;height:190px;border-radius:50%;border:0;background:#2f749e;color:#fff;font-size:1.15rem;font-weight:900;cursor:pointer;box-shadow:0 14px 30px rgba(47,116,158,.24)}.aim-field{width:100%;height:420px;border-radius:16px;border:1px solid #cfdde6;background:#fff;position:relative;overflow:hidden}.aim-dot{position:absolute;width:48px;height:48px;border-radius:50%;background:#2f749e;border:7px solid #d8edf7;box-shadow:0 0 0 2px #2f749e;cursor:pointer}.typing-wrap{width:min(760px,100%)}.typing-passage{font-size:1.08rem;line-height:1.8;background:#fff;border:1px solid #d7e3eb;border-radius:13px;padding:18px;margin-bottom:14px}.typing-input{width:100%;min-height:140px;border:1px solid #bfcfda;border-radius:12px;padding:14px;font:inherit;resize:vertical}.memory-grid{display:grid;grid-template-columns:repeat(4,72px);gap:9px}.memory-cell{width:72px;height:72px;border:0;border-radius:12px;background:#d9e5ec;cursor:pointer}.memory-cell.flash,.memory-cell.selected{background:#2f749e}.memory-cell.good{background:#5ba184}.memory-cell.bad{background:#c96c6c}.sequence-grid{display:grid;grid-template-columns:repeat(2,150px);gap:12px}.seq-pad{height:150px;border:0;border-radius:20px;cursor:pointer;opacity:.74}.seq-pad:nth-child(1){background:#397cab}.seq-pad:nth-child(2){background:#4d9d7b}.seq-pad:nth-child(3){background:#d19244}.seq-pad:nth-child(4){background:#9a69a8}.seq-pad.active{opacity:1;transform:scale(.97);box-shadow:0 0 0 6px rgba(255,255,255,.9) inset}.number-display{font-variant-numeric:tabular-nums;word-break:break-all}.answer-input{width:min(420px,90%);font-size:1.35rem;text-align:center;border:1px solid #b9ccd8;border-radius:10px;padding:12px}.stroop-word{font-size:clamp(3rem,10vw,6rem);font-weight:950;letter-spacing:-.04em;margin-bottom:20px}.color-buttons{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.color-buttons button{min-width:105px}.local-note{font-size:.82rem;color:#708392}.leaderboard{list-style:none;padding:0;margin:0}.leaderboard li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid #e5edf2}.leaderboard li:last-child{border-bottom:0}.game-info{padding:36px 0 0}.faq details{border-top:1px solid #dde7ed;padding:14px 0}.faq summary{font-weight:800;cursor:pointer}.footer{background:#142f45;color:#dce9f1;margin-top:58px}.footer .container{padding:34px 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}.footer h3{color:#fff;margin-top:0}.footer a{display:block;color:#dce9f1;text-decoration:none;margin:6px 0}.copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;margin-top:22px;font-size:.83rem;color:#afc1ce}.status-good{color:var(--good)}.status-bad{color:var(--bad)}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.dashboard{grid-template-columns:repeat(2,minmax(0,1fr))}.section-head,.content,.challenge-shell{grid-template-columns:1fr}.aside{position:static}.nav{display:none}.footer-grid{grid-template-columns:1fr 1fr}.hero .container{padding-top:44px}}
@media(max-width:580px){.grid,.dashboard,.footer-grid{grid-template-columns:1fr}.topbar .container{display:block}.header-row{min-height:66px}.hero h1{font-size:2.35rem}.section{padding:42px 0}.play-area{min-height:350px;padding:16px}.memory-grid{grid-template-columns:repeat(4,58px);gap:7px}.memory-cell{width:58px;height:58px}.sequence-grid{grid-template-columns:repeat(2,115px)}.seq-pad{height:115px}.challenge-top{align-items:flex-start;flex-direction:column}}

/* Pass 2 progression and challenge components */
.progress-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.progress-card{border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff}.progress-card span{display:block;color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;font-weight:850}.progress-card strong{display:block;font-size:2rem;line-height:1.1;margin-top:4px}.progress-card p{margin:.45rem 0 0;color:var(--muted);font-size:.86rem}.daily-card{display:grid;grid-template-columns:1.3fr .7fr;gap:28px;align-items:center;border:1px solid #cfe0ea;border-radius:20px;padding:26px;background:linear-gradient(135deg,#f9fcfe,#eef7fb);box-shadow:var(--shadow)}.daily-card h2{margin:.25rem 0}.daily-status{display:inline-block;border-radius:999px;padding:6px 10px;background:#fff;border:1px solid #d3e2eb;font-weight:800;font-size:.8rem}.category-strip{display:flex;gap:10px;flex-wrap:wrap}.category-strip a{display:inline-flex;padding:9px 12px;border:1px solid #cfdfe8;border-radius:999px;text-decoration:none;font-weight:800;background:#fff}.badge-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.badge-card{display:flex;gap:12px;border:1px solid var(--line);border-radius:14px;padding:15px;background:#fff}.badge-card>span{font-size:1.3rem;font-weight:950}.badge-card strong{display:block}.badge-card p{font-size:.84rem;color:var(--muted);margin:.2rem 0 0}.badge-card.locked{opacity:.52}.badge-card.earned{border-color:#bcdccc;background:#f7fcf9}.history-list{list-style:none;padding:0;margin:0}.history-list li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid #e3ebf0}.history-list li span{font-weight:750}.history-list li small{display:block;color:var(--muted);font-weight:500}.score-ring{width:160px;height:160px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,#fff 0 57%,transparent 58%),conic-gradient(#2f749e 0 70%,#dce9f0 70%);border:1px solid #d8e5ec;margin:auto}.score-ring strong{font-size:2.6rem}.category-hero{background:linear-gradient(180deg,#f7fbfd,#fff);border-bottom:1px solid var(--line)}.category-hero .container{padding:50px 0}.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.play-panel{width:min(760px,100%)}.choice-buttons{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.choice-buttons button{min-width:120px}.tracking-field{width:100%;height:380px;border:1px solid #cddde6;border-radius:16px;background:#fff;position:relative;overflow:hidden;cursor:crosshair}.tracking-target{position:absolute;width:78px;height:78px;border-radius:50%;background:#2f749e;border:10px solid #dceef7;box-shadow:0 0 0 2px #2f749e;transform:translate(-50%,-50%)}.word-card{font-size:clamp(2.4rem,8vw,5rem);font-weight:950;letter-spacing:-.04em}.math-problem{font-size:clamp(2.3rem,8vw,4.8rem);font-weight:950}.pattern-pair{display:flex;gap:28px;justify-content:center;flex-wrap:wrap}.pattern-board{display:grid;grid-template-columns:repeat(3,56px);gap:6px;padding:12px;border:1px solid #d5e2e9;border-radius:14px;background:#fff}.pattern-cell{width:56px;height:56px;border-radius:8px;background:#dfe9ef}.pattern-cell.on{background:#2f749e}.timer-face{font-size:clamp(3.2rem,12vw,7rem);font-weight:950;font-variant-numeric:tabular-nums}.search-grid{display:grid;grid-template-columns:repeat(8,44px);gap:6px;justify-content:center}.search-cell{width:44px;height:44px;border:1px solid #d4e0e7;border-radius:8px;background:#fff;font-size:1.3rem;font-weight:900;cursor:pointer}.arrow-cue{font-size:clamp(5rem,18vw,10rem);font-weight:950;line-height:1}.kbd-key{display:inline-block;border:1px solid #b7c8d3;border-bottom-width:4px;border-radius:9px;padding:7px 14px;background:#fff;font-weight:900}.category-card{border-left:4px solid #2f749e}.score-explain{font-size:.86rem;color:var(--muted);max-width:760px}
@media(max-width:900px){.progress-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.daily-card{grid-template-columns:1fr}.badge-grid{grid-template-columns:1fr}}
@media(max-width:580px){.progress-grid,.mini-grid{grid-template-columns:1fr}.search-grid{grid-template-columns:repeat(6,42px)}.search-cell{width:42px;height:42px}.pattern-board{grid-template-columns:repeat(3,48px)}.pattern-cell{width:48px;height:48px}}

/* Pass 3 competitive-session and progress components */
.competition-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.competition-card{border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff;box-shadow:0 8px 24px rgba(29,60,84,.06)}.competition-card h3{margin:.2rem 0 .4rem}.event-list{list-style:none;padding:0;margin:16px 0}.event-list li{display:grid;grid-template-columns:34px 1fr auto;gap:10px;align-items:center;border-bottom:1px solid #e5edf2;padding:11px 0}.event-list li:last-child{border-bottom:0}.event-num{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#edf5f9;font-weight:900;font-size:.8rem}.event-state{font-weight:850}.event-state.done{color:var(--good)}.event-score{font-size:.82rem;color:var(--muted)}.records-table{width:100%;border-collapse:collapse}.records-table th,.records-table td{text-align:left;padding:11px 9px;border-bottom:1px solid #e2ebf0}.records-table th{font-size:.76rem;text-transform:uppercase;letter-spacing:.07em;color:#647989}.delta-good{color:var(--good);font-weight:850}.delta-neutral{color:var(--muted)}.trend-wrap{border:1px solid var(--line);border-radius:16px;padding:16px;background:#fff}.trend-wrap canvas{width:100%;height:280px;display:block}.streak-calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:7px}.cal-day{aspect-ratio:1;border:1px solid #d9e4ec;border-radius:8px;display:grid;place-items:center;background:#fff;color:#758897;font-size:.78rem}.cal-day.active{background:#dff1e8;border-color:#9fcdb9;color:#1e684e;font-weight:900}.goal-box{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.goal-box input{width:78px;border:1px solid #bfd0da;border-radius:9px;padding:10px;font:inherit}.record-highlight{border:1px solid #cfe0ea;border-radius:18px;padding:22px;background:linear-gradient(135deg,#f8fcfe,#eef7fb)}.score-pill{display:inline-flex;align-items:center;gap:6px;border-radius:999px;background:#edf5f9;padding:6px 10px;font-weight:850;font-size:.82rem}.session-score{font-size:clamp(3rem,8vw,5rem);font-weight:950;letter-spacing:-.05em;line-height:1;color:#2f749e}.mini-note{font-size:.82rem;color:var(--muted)}
@media(max-width:760px){.competition-grid{grid-template-columns:1fr}.records-table{font-size:.86rem}.records-table th:nth-child(3),.records-table td:nth-child(3){display:none}}

/* Pass 4: difficulty levels + local rank progression */
.difficulty-panel{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;border:1px solid #cfe0ea;border-radius:18px;padding:20px;margin-bottom:18px;background:linear-gradient(135deg,#f9fcfe,#eef7fb)}
.difficulty-panel h2{margin:.15rem 0 .35rem;font-size:1.45rem}.difficulty-panel p{margin:0;color:var(--muted);max-width:720px}.difficulty-buttons{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.difficulty-btn{border:1px solid #bfd1dc;background:#fff;color:#315c76;border-radius:999px;padding:9px 12px;font:800 .82rem/1 inherit;cursor:pointer}.difficulty-btn:hover{border-color:#7fa9c0}.difficulty-btn.active{background:#1f638c;color:#fff;border-color:#1f638c}.leaderboard li small{display:block;color:var(--muted);font-size:.72rem;font-weight:600;margin-top:1px}.rank-card{border:1px solid #cbdde8;border-radius:18px;background:linear-gradient(135deg,#ffffff,#eef7fb);padding:22px}.rank-name{font-size:clamp(2.2rem,5vw,3.8rem);font-weight:950;letter-spacing:-.04em;line-height:1;color:#245f82}.rank-points{font-weight:850;color:#526b7d}.rank-track{height:12px;background:#dbe8ef;border-radius:999px;overflow:hidden;margin:13px 0 8px}.rank-track>span{display:block;height:100%;width:0;background:#2f749e;border-radius:999px;transition:width .35s ease}.rank-ladder{display:grid;gap:10px}.rank-row{display:grid;grid-template-columns:120px 100px 1fr;gap:14px;align-items:center;border-bottom:1px solid #e2ebf0;padding:12px 0}.rank-row:last-child{border-bottom:0}.rank-row strong{font-size:1.02rem}.difficulty-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.difficulty-card{border:1px solid var(--line);border-radius:16px;background:#fff;padding:18px}.difficulty-card h3{margin:.15rem 0 .4rem}.difficulty-card p{margin:0;color:var(--muted);font-size:.9rem}.difficulty-card .xp{display:inline-block;margin-top:12px;border-radius:999px;background:#edf5f9;padding:5px 9px;font-size:.76rem;font-weight:900;color:#315d77}.rank-summary{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:stretch}.rank-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.rank-stat{border:1px solid var(--line);border-radius:14px;background:#fff;padding:16px}.rank-stat span{display:block;color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.07em;font-weight:850}.rank-stat strong{display:block;font-size:1.8rem;margin-top:3px}.category-ranks{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.category-rank{border:1px solid var(--line);border-radius:14px;background:#fff;padding:16px}.category-rank strong{display:block;font-size:1.25rem}.category-rank small{color:var(--muted)}
@media(max-width:900px){.difficulty-panel,.rank-summary{grid-template-columns:1fr}.difficulty-buttons{justify-content:flex-start}.difficulty-grid,.category-ranks{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:580px){.difficulty-grid,.category-ranks,.rank-stats{grid-template-columns:1fr}.rank-row{grid-template-columns:92px 78px 1fr;font-size:.88rem}.difficulty-buttons{display:grid;grid-template-columns:1fr 1fr;width:100%}.difficulty-btn{border-radius:10px}.difficulty-panel{padding:16px}}

/* Pass 5: rank celebrations, difficulty suggestions, and challenge medals */
.challenge-progression{display:grid;grid-template-columns:.85fr 1.15fr;gap:14px;margin:0 0 18px}.challenge-medal-card,.unlock-suggestion{border:1px solid var(--line);border-radius:16px;background:#fff;padding:18px;display:flex;gap:16px;align-items:center}.challenge-medal-card h3,.unlock-suggestion h3{margin:.1rem 0 .35rem}.challenge-medal-card p,.unlock-suggestion p{margin:.15rem 0;color:var(--muted)}.challenge-medal-icon{width:58px;height:58px;flex:0 0 58px;border-radius:50%;display:grid;place-items:center;font-size:2rem;background:#f2f6f8;border:1px solid #d7e3ea}.challenge-medal-card.medal-bronze .challenge-medal-icon{background:#fff5ec;border-color:#e3c2a0}.challenge-medal-card.medal-silver .challenge-medal-icon{background:#f5f7f9;border-color:#cbd3da}.challenge-medal-card.medal-gold .challenge-medal-icon{background:#fff9df;border-color:#e8d48a}.challenge-medal-card.medal-platinum .challenge-medal-icon{background:#eef7fb;border-color:#b8d7e8}.unlock-suggestion{justify-content:space-between}.unlock-suggestion.ready{border-color:#a9d1bc;background:#f7fcf9}.mini-link{display:inline-block;margin-top:7px;font-size:.83rem;font-weight:850;text-decoration:none}.medal-cabinet{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.medal-cabinet-card{border:1px solid var(--line);border-radius:16px;background:#fff;padding:18px}.medal-cabinet-card .medal-symbol{font-size:2.2rem;line-height:1}.medal-cabinet-card h3{margin:.45rem 0 .2rem}.medal-cabinet-card p{color:var(--muted);font-size:.88rem;margin:.2rem 0}.medal-cabinet-card .medal-level{display:inline-flex;margin-top:10px;border-radius:999px;background:#edf5f9;padding:5px 9px;font-size:.75rem;font-weight:900}.medal-key{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.medal-key-item{border:1px solid var(--line);border-radius:14px;background:#fff;padding:16px;text-align:center}.medal-key-item .icon{font-size:2rem}.medal-key-item strong{display:block;margin-top:5px}.medal-toast{position:fixed;right:20px;bottom:20px;z-index:1200;display:flex;gap:12px;align-items:center;min-width:270px;max-width:380px;background:#17364f;color:#fff;border-radius:14px;padding:14px 16px;box-shadow:0 18px 45px rgba(15,40,58,.28);opacity:0;transform:translateY(14px);transition:.25s ease}.medal-toast.show{opacity:1;transform:translateY(0)}.medal-toast-icon{font-size:2rem}.medal-toast strong,.medal-toast small{display:block}.medal-toast small{margin-top:2px;color:#dce9f0}.rank-celebration{position:fixed;inset:0;z-index:1300;background:rgba(13,35,51,.72);display:grid;place-items:center;padding:20px;overflow:hidden}.rank-celebration-card{position:relative;z-index:2;width:min(560px,100%);background:#fff;border-radius:22px;padding:34px;box-shadow:0 28px 80px rgba(0,0,0,.26);text-align:center}.rank-celebration-card h2{font-size:clamp(2rem,7vw,3.4rem);margin:.15rem 0 .6rem;color:#245f82}.rank-burst{display:inline-flex;border-radius:999px;background:#17364f;color:#fff;padding:7px 12px;font-size:.76rem;letter-spacing:.12em;font-weight:950}.rank-celebration-card .actions{justify-content:center}.rank-confetti{position:absolute;inset:0;overflow:hidden;pointer-events:none}.rank-confetti i{position:absolute;left:var(--x);top:-28px;width:10px;height:18px;border-radius:3px;background:#fff;opacity:.9;transform:rotate(var(--r));animation:rankConfetti 1.9s ease-in var(--d) forwards}.rank-confetti i:nth-child(3n){width:8px;height:8px;border-radius:50%;background:#a8d5ea}.rank-confetti i:nth-child(4n){background:#f1d783}.rank-confetti i:nth-child(5n){background:#b8dfc8}@keyframes rankConfetti{0%{transform:translateY(-20px) rotate(var(--r));opacity:1}100%{transform:translateY(110vh) rotate(calc(var(--r) + 520deg));opacity:.1}}
@media(max-width:900px){.challenge-progression{grid-template-columns:1fr}.medal-cabinet,.medal-key{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:580px){.medal-cabinet,.medal-key{grid-template-columns:1fr}.unlock-suggestion{align-items:flex-start;flex-direction:column}.medal-toast{left:12px;right:12px;bottom:12px;min-width:0}.rank-celebration-card{padding:26px 20px}}

/* Pass 6: weekly tournaments, medal series, rank missions, certificates */
.pass6-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.pass6-card{background:#fff;border:1px solid #d8e5ed;border-radius:18px;padding:22px;box-shadow:0 10px 28px rgba(23,54,79,.06)}
.pass6-card h3{margin:.35rem 0 .55rem}.pass6-card p{margin:.25rem 0 1rem;color:#5c7182}.pass6-card .big-number{font-size:2.3rem;font-weight:900;color:#17364f;line-height:1}
.tournament-score{font-size:4rem;font-weight:950;line-height:1;color:#2f749e;margin:.4rem 0}.week-label{font-size:.95rem;color:#5c7182}
.tournament-history{display:grid;gap:10px;margin-top:16px}.tournament-history .week-row{display:grid;grid-template-columns:1fr auto auto;gap:14px;align-items:center;padding:12px 14px;background:#f7fbfe;border:1px solid #dde9f0;border-radius:12px}.week-row small{display:block;color:#6b7e8d}.week-row strong{color:#17364f}
.series-grid,.mission-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.series-card,.mission-card{background:#fff;border:1px solid #d8e5ed;border-radius:16px;padding:20px}.series-card.complete,.mission-card.complete{border-color:#8bbba2;background:#f7fcf9}.series-card h3,.mission-card h3{margin:.25rem 0}.progress-mini{height:10px;border-radius:999px;background:#e6eef3;overflow:hidden;margin:12px 0 7px}.progress-mini span{display:block;height:100%;background:#2f749e;border-radius:inherit}.series-card.complete .progress-mini span,.mission-card.complete .progress-mini span{background:#3e8b67}.series-count{font-weight:800;color:#17364f}.series-status{font-size:.9rem;color:#5c7182}
.mission-summary{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;background:#edf6fb;border:1px solid #cfe0ea;border-radius:18px;padding:22px;margin-bottom:20px}.mission-summary strong{font-size:1.7rem;color:#17364f}
.certificate-layout{display:grid;grid-template-columns:minmax(280px,.8fr) minmax(0,1.4fr);gap:26px;align-items:start}.certificate-controls{background:#fff;border:1px solid #d8e5ed;border-radius:18px;padding:22px}.certificate-controls label{display:block;font-weight:800;color:#17364f;margin:.8rem 0 .35rem}.certificate-controls input,.certificate-controls select{width:100%;padding:12px 13px;border:1px solid #b9cbd7;border-radius:10px;font:inherit;background:#fff}.certificate-preview{background:#f7fbfe;border:8px solid #17364f;outline:2px solid #8db7cf;outline-offset:-22px;min-height:520px;padding:70px 60px;text-align:center;display:flex;flex-direction:column;justify-content:center}.certificate-preview .cert-kicker{font-weight:800;letter-spacing:.12em;color:#2f749e}.certificate-preview h2{font-size:2.7rem;margin:.5rem 0 1.5rem}.certificate-preview .cert-name{font-size:2rem;font-weight:850;color:#17364f;margin:.4rem 0}.certificate-preview .cert-achievement{font-size:2.1rem;font-weight:900;color:#2f749e;margin:.75rem 0}.certificate-preview .cert-detail{color:#5c7182}.certificate-preview .cert-date{margin-top:2.2rem;color:#6b7e8d}.no-achievements{padding:18px;border-radius:12px;background:#fff7e8;border:1px solid #ecd6a8;color:#765a22}
.pass6-callout{background:linear-gradient(135deg,#17364f,#2f749e);color:#fff;border-radius:20px;padding:28px}.pass6-callout p{color:#dcecf5}.pass6-callout .btn.secondary{background:#fff;color:#17364f;border-color:#fff}
@media(max-width:900px){.pass6-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.series-grid,.mission-grid,.certificate-layout{grid-template-columns:1fr}.certificate-preview{min-height:430px;padding:55px 34px}}
@media(max-width:560px){.pass6-grid{grid-template-columns:1fr}.series-grid,.mission-grid{grid-template-columns:1fr}.tournament-history .week-row{grid-template-columns:1fr auto}.week-row .week-complete{grid-column:1/-1}.certificate-preview{padding:45px 24px}.certificate-preview h2{font-size:2rem}.certificate-preview .cert-name,.certificate-preview .cert-achievement{font-size:1.5rem}}
@media print{body.certificate-print .topbar,body.certificate-print .site-header,body.certificate-print main>section:not(.certificate-print-section),body.certificate-print .footer,body.certificate-print .certificate-controls{display:none!important}body.certificate-print .certificate-print-section{display:block!important;padding:0!important}body.certificate-print .certificate-layout{display:block}body.certificate-print .certificate-preview{width:100%;min-height:90vh;box-sizing:border-box;page-break-inside:avoid}body.certificate-print{background:#fff}}


/* Pass 7: trophies, summaries, category streaks, rival-yourself targets */
.pass7-progression{grid-template-columns:.75fr 1.05fr .9fr}.rival-card{border:1px solid #bcd5e3;border-radius:16px;background:linear-gradient(135deg,#f7fbfe,#edf6fb);padding:18px;display:flex;align-items:center}.rival-card h3{font-size:1.6rem;margin:.1rem 0 .25rem}.rival-card p{margin:.2rem 0;color:#5c7182}.rival-chip{display:inline-flex;margin-top:8px;border-radius:999px;background:#17364f;color:#fff;padding:5px 9px;font-size:.72rem;font-weight:900;letter-spacing:.04em}.trophy-grid,.summary-grid,.streak-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.trophy-card,.summary-card,.streak-card{background:#fff;border:1px solid #d8e5ed;border-radius:18px;padding:20px;box-shadow:0 8px 24px rgba(23,54,79,.05)}.trophy-icon{font-size:2.7rem;line-height:1}.trophy-card h3,.summary-card h3,.streak-card h3{margin:.4rem 0}.trophy-card p,.summary-card p,.streak-card p{color:#5c7182;margin:.3rem 0}.trophy-rank{display:inline-flex;margin-top:9px;background:#edf5f9;border-radius:999px;padding:5px 9px;font-size:.75rem;font-weight:900}.summary-number,.streak-number{font-size:2.3rem;line-height:1;font-weight:950;color:#2f749e}.category-bar{height:9px;background:#e3edf3;border-radius:999px;overflow:hidden;margin:7px 0 13px}.category-bar span{display:block;height:100%;background:#2f749e}.rival-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.rival-list .rival-row{background:#fff;border:1px solid #d8e5ed;border-radius:14px;padding:17px;display:flex;justify-content:space-between;gap:18px;align-items:center}.rival-row small{display:block;color:#6b7e8d}.share-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:15px}.pass7-callout{background:linear-gradient(135deg,#123049,#337da7);color:#fff;border-radius:20px;padding:28px}.pass7-callout p{color:#dcecf5}.pass7-callout .btn.secondary{background:#fff;color:#17364f;border-color:#fff}
@media(max-width:1000px){.pass7-progression{grid-template-columns:1fr}.trophy-grid,.summary-grid,.streak-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.trophy-grid,.summary-grid,.streak-grid,.rival-list{grid-template-columns:1fr}.rival-list .rival-row{align-items:flex-start;flex-direction:column}}


/* Pass 8: game polish, mobile play, optional feedback, and personal-best moments */
button,.btn,input,textarea,.reaction-pad,.aim-dot,.memory-cell,.seq-pad,.search-cell{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.challenge-box{transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}.challenge-box.feedback-success{border-color:#80b89f;box-shadow:0 0 0 4px rgba(59,138,100,.12),var(--shadow)}.challenge-box.feedback-error{border-color:#d89b9b;box-shadow:0 0 0 4px rgba(168,67,67,.10),var(--shadow)}.challenge-box.feedback-best{border-color:#d6b45f;box-shadow:0 0 0 5px rgba(213,139,60,.16),0 16px 42px rgba(24,56,82,.13);transform:translateY(-2px)}
.play-guide{border:1px solid #d7e5ed;border-radius:18px;background:#fff;padding:20px;margin:0 0 16px;box-shadow:0 8px 26px rgba(23,54,79,.045)}.play-guide-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.play-guide h2{font-size:1.35rem;margin:.1rem 0}.mode-chip{display:inline-flex;border-radius:999px;background:#17364f;color:#fff;padding:6px 10px;font-size:.72rem;font-weight:900;white-space:nowrap}.play-guide ol{list-style:none;padding:0;margin:14px 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.play-guide li{display:flex;gap:10px;align-items:flex-start;background:#f7fbfe;border:1px solid #e0eaf0;border-radius:12px;padding:12px}.play-guide li>span{width:25px;height:25px;flex:0 0 25px;border-radius:50%;display:grid;place-items:center;background:#2f749e;color:#fff;font-size:.75rem;font-weight:950}.play-guide li p{margin:0;color:#506979;font-size:.86rem;line-height:1.45}.mode-details{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.mode-details span{display:inline-flex;border-radius:999px;background:#edf5f9;color:#315e78;padding:5px 9px;font-size:.73rem;font-weight:850}
.feedback-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid #d8e5ed;border-radius:14px;background:#fbfdfe;padding:12px 14px;margin:0 0 16px}.feedback-controls strong,.feedback-controls small{display:block}.feedback-controls small{color:#6b7e8d;font-size:.76rem}.feedback-buttons{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}.feedback-buttons button{border:1px solid #c9d9e3;border-radius:999px;background:#fff;color:#375b72;padding:7px 10px;font:800 .75rem/1 inherit;cursor:pointer}.feedback-buttons button.active,.feedback-buttons button[aria-pressed="true"]{background:#17364f;color:#fff;border-color:#17364f}
.personal-best-toast{position:fixed;right:20px;top:98px;z-index:1250;display:flex;align-items:center;gap:12px;min-width:285px;max-width:400px;background:linear-gradient(135deg,#7d5a13,#d58b3c);color:#fff;border-radius:15px;padding:15px 17px;box-shadow:0 18px 48px rgba(50,39,12,.28);opacity:0;transform:translateY(-14px) scale(.96);transition:.25s ease}.personal-best-toast.show{opacity:1;transform:translateY(0) scale(1)}.personal-best-toast .pb-icon{width:44px;height:44px;flex:0 0 44px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.18);font-size:1.6rem}.personal-best-toast strong,.personal-best-toast small{display:block}.personal-best-toast small{margin-top:2px;color:#fff6db}
.search-grid{--cols:8;grid-template-columns:repeat(var(--cols),minmax(0,1fr));width:min(100%,calc(var(--cols) * 50px));gap:6px}.search-cell{width:100%;height:auto;aspect-ratio:1;min-width:0}.memory-grid{--cols:4;grid-template-columns:repeat(var(--cols),minmax(0,1fr));width:min(100%,420px);gap:9px}.memory-cell{width:auto;height:auto;aspect-ratio:1;min-width:0}.aim-field,.tracking-field{touch-action:none}.click-target{touch-action:manipulation;user-select:none}.sequence-grid,.memory-grid,.search-grid{max-width:100%;margin-inline:auto}
.tournament-progress{height:13px;border-radius:999px;background:#dce8ef;overflow:hidden;margin:13px 0 6px}.tournament-progress span{height:100%;display:block;background:linear-gradient(90deg,#2f749e,#4f93b7);border-radius:inherit;transition:width .35s ease}.tournament-benchmark{margin-top:16px;padding-top:14px;border-top:1px solid #dce6ec}.tournament-benchmark strong{display:block;font-size:1.15rem}.event-list li{transition:transform .15s ease,border-color .15s ease,background .15s ease}.event-list li:has(.event-state.done){border-color:#bcd8c9;background:#f8fcfa}.event-category{display:inline-flex;margin-top:5px;border-radius:999px;background:#eef5f9;color:#47677a;padding:3px 7px;font-size:.68rem;font-weight:850}.event-points{display:block;color:#2f749e;font-size:.78rem;font-weight:900;margin-top:3px}.weekly-spotlight{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:16px}.weekly-spotlight>div{border:1px solid #dbe6ed;border-radius:13px;background:#fff;padding:13px}.weekly-spotlight span{display:block;color:#6a7e8e;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;font-weight:850}.weekly-spotlight strong{display:block;margin-top:3px;font-size:1.2rem}
.reduced-motion *,body.reduced-motion *{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.reduced-motion .rank-confetti{display:none!important}.reduced-motion .challenge-box.feedback-best{transform:none}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.rank-confetti{display:none!important}}
@media(max-width:720px){.play-guide ol{grid-template-columns:1fr}.feedback-controls{align-items:flex-start;flex-direction:column}.feedback-buttons{justify-content:flex-start;width:100%}.feedback-buttons button{min-height:42px}.weekly-spotlight{grid-template-columns:1fr}.play-area{min-height:320px}.aim-field{height:360px}.tracking-field{height:340px}.typing-input{font-size:16px}.answer-input{font-size:1.2rem}.color-buttons button,.choice-buttons button{min-height:48px}.click-target{width:min(180px,52vw);height:min(180px,52vw)}.personal-best-toast{left:12px;right:12px;top:82px;min-width:0}.challenge-top{padding:18px}.scoreboard{width:100%;justify-content:space-between}}
@media(max-width:430px){.container{width:min(100% - 24px,1160px)}.play-area{padding:12px;min-height:300px}.sequence-grid{width:100%;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.seq-pad{width:100%;height:auto;aspect-ratio:1}.search-grid{gap:4px}.memory-grid{gap:6px}.play-guide,.difficulty-panel{border-radius:14px}.reaction-pad{height:300px}.aim-field{height:330px}.tracking-field{height:310px}}

/* Pass 9: search/discovery content */
.related-challenges a{display:block;padding:12px 0;border-bottom:1px solid rgba(23,54,79,.12);text-decoration:none}
.related-challenges a:last-child{border-bottom:0}
.related-challenges a strong{display:block;color:#17364f}
.related-challenges a span{display:block;color:#5c7182;font-size:.92rem;margin-top:3px;line-height:1.45}
#searchDiscoveryGuide .faq details{margin-bottom:10px}
#categorySearchGuide .card h3 a,#popularPerformanceTests .card h3 a{color:inherit;text-decoration:none}
#categorySearchGuide .card h3 a:hover,#popularPerformanceTests .card h3 a:hover{text-decoration:underline}


/* Pass 10: production hardening, keyboard accessibility and mobile navigation */
.skip-link{position:fixed;left:12px;top:12px;z-index:2000;background:#fff;color:#17364f;border:2px solid #2f749e;border-radius:8px;padding:10px 14px;font-weight:900;text-decoration:none;transform:translateY(-160%);transition:transform .15s ease;box-shadow:0 8px 22px rgba(23,54,79,.18)}
.skip-link:focus{transform:translateY(0)}
:where(a,button,input,textarea,select,[tabindex]):focus-visible{outline:3px solid #e09a45;outline-offset:3px}
.btn:focus-visible,.nav a:focus-visible,.feedback-buttons button:focus-visible{outline:3px solid #e09a45;outline-offset:3px}
.reaction-pad[role="button"]:focus-visible,.photo-stage:focus-visible{outline:4px solid #e09a45;outline-offset:4px}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
canvas{max-width:100%}
@media(max-width:900px){
  .header-row{min-height:auto;padding:11px 0;align-items:flex-start;flex-wrap:wrap}
  .brand{flex:0 0 auto}
  .nav{display:flex;width:100%;flex-wrap:nowrap;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin;padding:4px 0 6px;-webkit-overflow-scrolling:touch}
  .nav a{flex:0 0 auto;white-space:nowrap;min-height:42px;display:inline-flex;align-items:center}
}
@media(max-width:580px){.topbar .container{display:flex;flex-direction:column;gap:2px}.header-row{min-height:auto}.nav{margin-top:2px}}
@media(prefers-contrast:more){.card,.aside,.challenge-box,.play-guide,.feedback-controls{border-color:#6f8798}.btn.secondary{border-color:#6f8798}.local-note,.card p,.section-head p{color:#3d5668}}