@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{--ink:#f8f5ff;--muted:#a7a1bc;--bg:#17122c;--panel:#211b3c;--line:#3a3158;--violet:#a58aff;--cyan:#75e4dc;--coral:#ff7b77;--yellow:#ffd66b}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(ellipse at 48% 12%,#34244f 0,transparent 48%),linear-gradient(160deg,#17122c,#111126 72%);color:var(--ink);font-family:'Space Grotesk',system-ui,sans-serif;overscroll-behavior:none}.app-shell{max-width:760px;min-height:100svh;padding-top:max(12px,env(safe-area-inset-top));padding-bottom:max(16px,env(safe-area-inset-bottom));display:flex;flex-direction:column}.topbar{height:48px;display:flex;align-items:center;justify-content:space-between}.brand{color:var(--ink);font-size:13px;font-weight:700;letter-spacing:.13em;text-decoration:none}.brand em{color:var(--cyan);font-style:normal}.brand-mark{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:8px;background:var(--violet);color:#21183a;font-size:17px;margin-right:7px}.icon-btn{height:42px;min-width:42px;border:1px solid var(--line);background:#ffffff08;color:var(--ink);border-radius:13px;font-size:18px}.screen{display:none;flex:1;animation:appear .35s ease both}.screen.active{display:flex;flex-direction:column}@keyframes appear{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.hero{margin:auto 0;padding:35px 0 22px}.eyebrow{font:500 10px 'DM Mono',monospace;letter-spacing:.2em;color:var(--cyan)}h1{font-size:clamp(42px,10vw,72px);line-height:.98;letter-spacing:-.07em;font-weight:700;margin:18px 0}h1 span{color:var(--violet)}.hero>p{color:var(--muted);max-width:440px;margin:0 auto 27px;font-size:15px}.mode-grid{max-width:580px;text-align:left}.mode-card{display:flex;align-items:center;gap:12px;text-align:left;border:1px solid var(--line);background:#ffffff08;color:var(--ink);padding:15px;border-radius:18px;min-height:88px;transition:transform .15s,border-color .15s}.mode-card:hover,.mode-card.selected{border-color:var(--violet);transform:translateY(-2px)}.mode-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:#a58aff20;color:var(--violet);font-size:26px;flex:none}.infinite .mode-icon{background:#75e4dc20;color:var(--cyan)}.mode-card b{display:block;font-size:12px;letter-spacing:.09em}.mode-card small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.mode-card>i{margin-left:auto;color:var(--muted)}.btn-play{border:0;border-radius:15px;min-height:54px;background:linear-gradient(110deg,#aa8cff,#8e72f4);box-shadow:0 8px 24px #9274f438;color:#1c1532;font-weight:700;letter-spacing:.09em;padding:0 24px;font-size:13px}.hero>.btn-play{margin-top:21px;width:min(100%,580px)}.btn-play:active,.btn-outline:active{transform:scale(.98)}.record-strip{max-width:580px;margin:22px auto 0;padding:15px 8px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;justify-content:space-around;gap:8px;align-items:center}.record-strip span,.record-strip b{font:500 9px 'DM Mono',monospace;letter-spacing:.08em;color:var(--muted)}.record-strip b{color:var(--ink)}.record-strip strong{color:var(--yellow);margin-left:5px}.home-links{display:flex;justify-content:center;flex-wrap:wrap;gap:8px}.home-links button,.text-button{border:0;background:none;color:var(--muted);font-size:11px;padding:9px}.home-links button:hover,.text-button:hover{color:var(--cyan)}.privacy-note{text-align:center;color:#817b96;font-size:10px;margin:12px 0 0}.privacy-note i{color:var(--cyan)}footer{display:flex;justify-content:space-between;color:#716b86;font-size:9px;padding-top:15px}footer span{font:9px 'DM Mono',monospace;letter-spacing:.1em}.back-link{border:0;background:none;color:var(--muted);text-align:left;font:500 10px 'DM Mono',monospace;letter-spacing:.12em;padding:18px 0}.panel-card{background:linear-gradient(145deg,#282143,#201a38);border:1px solid #ffffff12;border-radius:24px;padding:clamp(22px,6vw,36px);box-shadow:0 22px 70px #05040d55}.prepare-card{margin:auto 0}.panel-card h2{font-size:clamp(27px,7vw,38px);letter-spacing:-.05em;margin:11px 0}.panel-card p{color:var(--muted);font-size:14px;line-height:1.65}.difficulty-row{display:flex;align-items:center;gap:12px;margin:25px 0;color:var(--muted);font-size:12px}.difficulty-row label{flex:1}.form-select{width:auto;min-width:145px;background-color:#17122c;color:var(--ink);border-color:var(--line);border-radius:12px}.game-head{display:flex;align-items:center;justify-content:space-between;padding:12px 0}.game-head>div{text-align:center;font:500 10px 'DM Mono',monospace;letter-spacing:.16em}.game-head small{display:block;color:var(--cyan);font-size:9px;margin-top:4px}.scorebar{display:flex;justify-content:space-around;background:#ffffff08;border:1px solid #ffffff0a;border-radius:15px;padding:10px}.scorebar div{text-align:center}.scorebar small{display:block;font:9px 'DM Mono',monospace;color:var(--muted);letter-spacing:.1em}.scorebar b{font-size:18px}.progress-track{height:4px;background:#ffffff14;border-radius:4px;margin:13px 0 8px;overflow:hidden}.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--violet));transition:width .2s}.timer-wrap{display:flex;justify-content:space-between;min-height:24px;color:var(--muted);font-size:11px}.board{width:min(100%,220px);height:clamp(340px,52vh,480px);margin:auto;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(8,minmax(0,1fr));gap:4px;padding:7px;background:#0b0a19;border:1px solid #ffffff12;border-radius:22px;touch-action:none;user-select:none}.tile{border:1px solid #ffffff30;border-radius:7px;background:linear-gradient(145deg,#4b3a76,#30244e);display:grid;place-items:center;font-size:clamp(19px,6vw,27px);font-weight:700;color:#fff;box-shadow:inset 0 1px #ffffff20;transition:transform .12s,background .12s;touch-action:none;user-select:none}.tile.terrain{font:600 10px "DM Mono",monospace;letter-spacing:.15em;text-transform:uppercase;color:var(--cyan);background:#19223a}.tile.ciel{border-radius:50% 50% 8px 8px}.tile.terre{border-radius:8px 8px 50% 50%}.tile.pair{background:linear-gradient(145deg,#216665,#174846)}.tile.empty{visibility:hidden}.tile.pair{background:linear-gradient(145deg,#216665,#174846)}.tile.forbidden{background:#65333e;color:var(--coral);outline:2px dashed var(--coral)}.tile.hit{background:#267d74!important;transform:scale(.94)}.tile.error{background:#963e50!important;animation:shake .25s}.tile.target{box-shadow:0 0 20px #ffe28380,inset 0 0 0 2px var(--yellow)}@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}.game-hint{text-align:center;color:var(--muted);font-size:11px;min-height:28px;margin:10px 0}.infinite-stage{display:none;position:relative;flex:1;min-height:390px;margin:14px 0 0;border-radius:22px;overflow:hidden;border:1px solid #ffffff13;background:linear-gradient(#211b3c,#151329);touch-action:none}.infinite-stage:before,.infinite-stage:after{content:"";position:absolute;top:0;bottom:0;width:1px;background:#ffffff12;left:33.3%;z-index:0}.infinite-stage:after{left:66.6%}.sky-label{position:absolute;top:10px;left:0;right:0;text-align:center;font:500 9px "DM Mono",monospace;letter-spacing:.18em;color:var(--muted);z-index:1}.hit-line{position:absolute;bottom:18%;height:2px;left:0;right:0;background:var(--cyan);box-shadow:0 0 18px var(--cyan);z-index:1}.hit-line span{position:absolute;right:10px;top:8px;font:9px 'DM Mono';letter-spacing:.12em;color:var(--cyan)}#notes{position:absolute;inset:0}.note{position:absolute;width:26%;height:50px;border-radius:13px;display:grid;place-items:center;font-size:23px;font-weight:700;background:linear-gradient(135deg,#9270ec,#694bd0);box-shadow:0 8px 20px #7b59d666;z-index:2;touch-action:none}.note.lane-0{left:3%}.note.lane-1{left:36.5%;background:linear-gradient(135deg,#46aaa2,#21736c)}.note.lane-2{left:70%;background:linear-gradient(135deg,#e9847e,#bf4f61)}.note.gold{box-shadow:0 0 22px #ffd66b}.note.double{border-color:#ffffff70}.note.half-hit{opacity:.48;transform:scale(.9)}.note.missed{opacity:0}.result-card{margin:auto 0;text-align:center}.final-score{font-size:clamp(52px,15vw,82px);font-weight:700;letter-spacing:-.07em;color:var(--yellow);line-height:1.2}.record-badge{color:var(--cyan);font:500 10px 'DM Mono';letter-spacing:.13em;margin:8px}.result-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin:22px 0}.stat-pill{background:#ffffff08;border:1px solid #ffffff0a;border-radius:12px;padding:11px}.stat-pill small{display:block;font:9px 'DM Mono';color:var(--muted);letter-spacing:.1em}.stat-pill b{font-size:17px}.result-actions{display:grid;gap:9px}.btn-outline{min-height:48px;border:1px solid #ffffff25;border-radius:14px;background:transparent;color:var(--ink);font-size:11px;font-weight:600;letter-spacing:.06em}.overlay{position:fixed;inset:0;background:#100d20dd;z-index:20;display:grid;place-items:center;padding:22px}.overlay[hidden],.install-banner[hidden]{display:none}.overlay .panel-card{width:min(100%,440px)}.overlay button{margin-top:10px}.toast-msg{position:fixed;z-index:40;bottom:calc(25px + env(safe-area-inset-bottom));left:50%;transform:translate(-50%,20px);opacity:0;background:#f7f2ff;color:#211936;border-radius:30px;padding:11px 18px;font-size:12px;font-weight:600;transition:.2s;pointer-events:none;white-space:nowrap}.toast-msg.show{opacity:1;transform:translate(-50%,0)}.install-banner{position:fixed;z-index:10;bottom:12px;left:12px;right:12px;padding:17px;background:#30264d;border:1px solid #ffffff24;border-radius:18px;box-shadow:0 12px 40px #0008}.install-banner b,.install-banner span{display:block}.install-banner b{font-size:14px}.install-banner span{font-size:11px;color:var(--muted);margin:3px 0 12px}.install-banner>div{display:flex;gap:8px}.dismiss{position:absolute;right:11px;top:7px;border:0;background:none;color:var(--muted);font-size:23px}.btn-mini{background:var(--cyan);border:0;border-radius:9px;padding:9px 13px;color:#142c2a;font-weight:700;font-size:10px}.btn-mini.secondary{color:var(--ink);background:#ffffff12}.info-list{padding-left:19px;color:var(--muted);line-height:1.9;font-size:13px}.achievement{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid #ffffff13}.achievement i{font-size:22px;color:var(--yellow)}.achievement small{display:block;color:var(--muted)}@media(min-width:650px){.hero{padding-top:55px}.board{width:min(100%,220px);height:clamp(340px,52vh,480px);margin:auto;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(8,minmax(0,1fr));gap:4px;padding:7px;background:#0b0a19;border:1px solid #ffffff12;border-radius:22px;touch-action:none;user-select:none}.infinite-stage{max-height:65vh}.app-shell{padding-left:45px!important;padding-right:45px!important}}@media(max-height:700px){.hero{padding-top:14px;padding-bottom:10px}.hero h1{font-size:44px;margin:10px}.hero>p{margin-bottom:15px}.mode-card{min-height:72px}.record-strip{margin-top:12px;padding:10px}.home-links button{padding:6px}.board{width:min(100%,220px);height:clamp(340px,52vh,480px);margin:auto;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(8,minmax(0,1fr));gap:4px;padding:7px;background:#0b0a19;border:1px solid #ffffff12;border-radius:22px;touch-action:none;user-select:none}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}