@charset "UTF-8";
:root{color-scheme:dark;--bg:#111e32;--panel:#1c2e46;--line:#35475f;--text:#f5f7fc;--muted:#b5c4d7;--mint:#a5f4cf;--orange:#ffac65;--gold:#ffd578;--ink:#14253a;font-family:"Yu Gothic UI","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;font-size:16px}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);background-image:radial-gradient(#41547155 1px,transparent 1px);background-size:26px 26px}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;touch-action:manipulation}button:disabled{cursor:default}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--gold);outline-offset:5px}a{color:inherit}.shell{width:min(1120px,100% - 48px);margin:auto}.masthead{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:25px 0;border-bottom:1px solid var(--line)}.brand{font-weight:900;letter-spacing:.08em;text-decoration:none;font-size:.95rem;display:flex;align-items:center;gap:12px}.brand-icon{background:var(--mint);color:var(--ink);width:35px;height:35px;display:grid;place-items:center;border-radius:10px;font-size:1.5rem}.brand small{font-size:.8rem;letter-spacing:.06em;color:var(--muted);border-left:1px solid var(--line);padding-left:12px}.date-badge{color:var(--muted);font-size:.88rem;white-space:nowrap}main{min-height:75vh}.intro{display:grid;grid-template-columns:1fr auto;align-items:center;gap:30px;padding:32px 0 25px}.eyebrow{font-family:Consolas,monospace;font-size:.85rem;font-weight:700;letter-spacing:.15em;color:var(--mint);margin:0 0 12px}.intro h1{font-size:clamp(1.7rem,3.4vw,2.7rem);letter-spacing:.025em;margin:0 0 10px;line-height:1.35}.intro h1 em{font-style:normal;color:var(--orange)}.subtitle{color:var(--muted);margin:0;font-size:1rem;line-height:1.8}.countdown{min-width:225px;text-align:center;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:20px 25px;transform:rotate(2deg);box-shadow:5px 6px 0 #091322}.countdown span{display:block;color:var(--muted);font-size:.85rem}.countdown strong{display:block;color:var(--orange);font-size:1.45rem;margin-top:6px}.countdown b{font:900 2.5rem Consolas,monospace}.star-panel{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:18px 24px;background:#203348;border:1px solid #456078;border-radius:16px}.star-copy{font-weight:700;white-space:nowrap}.star-copy small{display:block;color:var(--muted);font-weight:400;margin-top:5px}.stars{display:flex;gap:6px;flex-wrap:wrap}.stars span{font-size:1.4rem;color:#667c92}.stars span.earned{color:var(--gold);text-shadow:0 0 15px #ffd57855}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:28px 0 18px}.section-head h2{margin:0;font-size:1.25rem}.section-head p{color:var(--muted);font-size:.85rem;margin:0}.doors{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.door{position:relative;text-align:left;border:1px solid #3b4d63;background:#1a2a40;color:var(--text);border-radius:18px;padding:17px 17px 14px;min-height:218px;transition:transform .18s,border-color .18s;overflow:hidden}.door:hover{transform:translateY(-3px);border-color:var(--mint)}.door-top{display:flex;justify-content:space-between;align-items:center;gap:4px}.day-num{font:700 1.05rem Consolas,monospace;letter-spacing:.08em}.door-date{font-size:.85rem;color:var(--muted)}.portal{width:74px;height:94px;border:2px solid #60738a;border-radius:36px 36px 3px 3px;margin:13px auto 12px;display:grid;place-items:center;position:relative;background:linear-gradient(140deg,#324359,#24344b);box-shadow:0 0 0 6px #101d30,0 0 0 7px #40516a;font-size:1.35rem}.portal:after{content:"";position:absolute;right:9px;top:56%;width:6px;height:6px;border-radius:50%;background:#b6c4d4}.door-state{text-align:center;font:700 .8rem Consolas,monospace;letter-spacing:.1em}.door-label{display:block;text-align:center;font-size:.85rem;color:var(--muted);margin-top:7px}.door.open{border-color:#7cc6b0;background:#1d3c42}.door.open .portal{border-color:var(--mint);background:linear-gradient(145deg,#436c60,#25473f);box-shadow:0 0 0 6px #172f34,0 0 0 7px #6aab95}.door.open .door-state{color:var(--mint)}.door.today{background:#394032;border:2px solid var(--gold)}.door.today .portal{background:linear-gradient(145deg,#f9d584,#c68d49);color:var(--ink);border-color:#ffdda0;box-shadow:0 0 25px #ffc96e33,0 0 0 6px #283429,0 0 0 7px #b99658}.today-chip{position:absolute;right:0;bottom:0;background:var(--gold);color:var(--ink);font-size:.75rem;font-weight:800;padding:3px 9px;border-radius:9px 0 0 0}.door.clear{background:#263747}.door.clear .portal{color:var(--gold);border-color:#c3ac73;background:#3e483f}.door.clear .door-state{color:var(--gold)}.door.final{border-style:dashed}.note{margin-top:24px;background:#192a40;padding:18px 22px;border-left:3px solid var(--mint);border-radius:0 12px 12px 0;color:var(--muted);line-height:1.8}.complete-banner{text-align:center;padding:25px;color:var(--gold);font-weight:900;font-size:1.3rem}.testbar{margin-top:20px;padding:16px;border:2px dashed var(--orange);border-radius:12px;display:flex;align-items:center;flex-wrap:wrap;gap:12px;background:#3a3028}.testbar select{padding:10px;font:inherit;max-width:100%}footer{text-align:center;color:var(--muted);font-size:.85rem;padding:35px 0;line-height:1.8}.btn{border:0;min-height:52px;border-radius:12px;background:var(--mint);color:var(--ink);font-weight:800;padding:13px 23px;box-shadow:0 4px 0 #467b69}.btn:hover{filter:brightness(1.08)}.btn.secondary{background:var(--panel);color:var(--text);border:1px solid var(--line);box-shadow:none}.btn.orange{background:var(--orange);box-shadow:0 4px 0 #a46639}.back{background:transparent;color:var(--muted);border:0;padding:10px 0;min-height:48px;text-decoration:underline;text-underline-offset:5px}.game-head{padding:22px 0 16px;display:flex;justify-content:space-between;align-items:center;gap:12px}.game-head h1{margin:6px 0 0;font-size:clamp(1.4rem,3vw,2rem)}.pill{border:1px solid #678777;color:var(--mint);border-radius:99px;padding:9px 16px;white-space:nowrap;font-weight:700}.game-panel{padding:28px;background:#192b42;border:1px solid var(--line);border-radius:22px;text-align:center}.instructions{margin:0 0 22px;font-size:1.1rem;line-height:1.8}.game-message{min-height:1.7em;color:var(--gold);margin:16px 0;font-weight:700}.game-actions{display:flex;gap:14px;justify-content:center;margin-top:18px;flex-wrap:wrap}.spot-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:820px;margin:auto}.spot-caption{text-align:left;color:var(--muted);font-size:.9rem;margin:0 0 10px}.scene{position:relative;aspect-ratio:1;overflow:hidden;border-radius:16px;border:2px solid #8ba4b9;background:#273f55;cursor:crosshair;touch-action:manipulation}.scene svg,.scene img{display:block;width:100%;height:100%;object-fit:fill}.marker{position:absolute;transform:translate(-50%,-50%);border:4px solid #ffdf66;border-radius:50%;box-shadow:0 0 0 2px #213246;pointer-events:none}.memory-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;max-width:540px;margin:auto}.card{aspect-ratio:1.06;border:2px solid #6b889b;border-radius:14px;background:repeating-linear-gradient(45deg,#28485b,#28485b 8px,#2c4d60 8px,#2c4d60 10px);color:var(--mint);font:800 2rem Consolas,monospace;box-shadow:0 4px 0 #0d1b2c;transition:transform .15s}.card:hover{transform:translateY(-2px)}.card.face{background:#e9f1df;font-size:2.7rem;color:var(--ink);border-color:#effbdf}.card.matched{background:#b9e3ca;border-color:var(--mint);box-shadow:none}.board-wrap{position:relative;width:min(100%,300px);margin:auto}.tetris-board{display:grid;grid-template-columns:repeat(10,1fr);background:#0b1728;border:4px solid #557087;aspect-ratio:10/16;border-radius:6px;overflow:hidden}.block{border:1px solid #1d2e42;min-width:0}.block.filled{background:var(--block);border:2px solid #ffffff40;box-shadow:inset -3px -3px #0002}.block.ghost{background:#a5f4cf18;border:2px dashed #a5f4cf88}.board-overlay{position:absolute;inset:0;display:grid;align-content:center;gap:18px;background:#0e1b2aeb;padding:20px;border-radius:8px;font-size:1.3rem;font-weight:700}.controls{display:flex;justify-content:center;gap:10px;margin:20px auto 8px;flex-wrap:wrap}.control{height:58px;min-width:60px;border:1px solid #6e869b;border-radius:12px;background:#324b64;color:var(--text);font-size:1.3rem;font-weight:800;touch-action:manipulation;box-shadow:0 4px 0 #0b1728}.control:active{transform:translateY(3px);box-shadow:0 1px 0 #0b1728}.control.wide{font-size:1rem;padding:0 18px}.keyboard-note{font-size:.85rem;color:var(--muted);line-height:1.8;margin:12px 0}.maze-board{display:grid;max-width:430px;aspect-ratio:1;margin:auto;border:6px solid #0b192d;border-radius:12px;overflow:hidden;background:#cbdcca}.maze-cell{display:grid;place-items:center;min-width:0;position:relative}.maze-cell.wall{background:#385467;box-shadow:inset 0 1px #63809188}.maze-cell.trail:after{content:"";width:6px;height:6px;border-radius:50%;background:#6c9f88}.maze-cell.player{background:var(--orange);border-radius:50%;z-index:1;color:#13283b;font-weight:900;font-size:1.2rem;box-shadow:inset 0 0 0 3px #ffddaa}.maze-cell.goal{font-size:1.3rem;background:#a6d4b5}.dpad{display:grid;grid-template-columns:repeat(3,60px);gap:9px;justify-content:center;margin:20px auto}.dpad .up{grid-column:2}.dpad .left{grid-column:1}.result{max-width:750px;margin:26px auto 0;text-align:center;background:var(--panel);border:1px solid #5b796f;border-radius:24px;padding:38px 26px}.result .medal{font-size:4rem;margin:10px 0}.result h1{font-size:clamp(1.6rem,4vw,2.3rem);color:var(--gold);line-height:1.5;margin:12px 0}.result p{line-height:1.9}.result .star-award{color:var(--mint);font-weight:800;font-size:1.3rem}.letter{background:#fff5d9;color:#29372e;border-radius:14px;padding:24px;margin-top:26px;text-align:left;border:1px solid #f6d89f}.letter h2{font-size:1rem;color:#547662;margin-top:0}.letter .hint{font-size:1.25rem;font-weight:700;line-height:1.9}.letter .care{font-size:.9rem;line-height:1.8;color:#5f6658}.final-step{animation:arrive .65s both;font-weight:700;font-size:1.15rem}.final-step.big{font-size:clamp(1.6rem,4vw,2.3rem);color:var(--gold);margin:26px 0}.result .stars{justify-content:center;margin:20px auto;max-width:340px}.result .stars span{font-size:1.7rem}.save-warning{background:#633d29;color:#fff1cd;border:1px solid #e5ad70;border-radius:10px;padding:13px;margin:15px 0;line-height:1.8}#toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,20px);background:#edf5e9;color:#183428;padding:15px 22px;border-radius:14px;box-shadow:0 8px 30px #0005;max-width:min(92vw,550px);width:max-content;opacity:0;pointer-events:none;transition:.2s;z-index:10;font-weight:700;line-height:1.6}#toast.show{opacity:1;transform:translate(-50%,0)}#confetti{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:11}.confetti-piece{position:absolute;top:-30px;width:9px;height:18px;background:var(--c);left:var(--x);animation:fall var(--duration) linear forwards;animation-delay:var(--delay)}@keyframes fall{to{transform:translateY(110vh) rotate(720deg)}}@keyframes arrive{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1000px){.door{min-height:230px}.portal{height:100px;width:80px}}
@media(max-width:700px){.shell{width:calc(100% - 28px)}.masthead{padding:18px 0}.brand small{display:none}.brand{font-size:.8rem;gap:8px}.date-badge{font-size:.8rem}.intro{grid-template-columns:1fr;gap:18px;padding:25px 0 20px}.intro h1{font-size:1.8rem}.countdown{transform:none;padding:13px 18px;display:flex;justify-content:space-between;align-items:center;gap:8px;box-shadow:none;min-width:0}.countdown strong{margin:0;font-size:1.1rem}.countdown b{font-size:1.8rem}.star-panel{padding:16px;display:block}.stars{gap:5px;margin-top:12px}.stars span{font-size:1.1rem}.star-copy{font-size:.95rem}.star-copy small{display:inline;margin-left:8px;font-size:.8rem}.section-head{align-items:start}.section-head p{font-size:.8rem;max-width:140px;text-align:right;line-height:1.5}.doors{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.door{min-height:210px;padding:14px 12px}.game-panel{padding:18px 12px}.spot-pair{gap:9px}.scene{border-radius:10px}.marker{border-width:3px}.memory-grid{gap:9px}.card.face{font-size:2rem}.game-head{align-items:start}.pill{font-size:.85rem;padding:8px 11px}.instructions{font-size:1rem}.result{padding:25px 16px}.letter{padding:20px}.note{font-size:.9rem}.game-head h1{font-size:1.4rem}}
.maze-board{grid-auto-rows:1fr}.maze-cell{min-height:0}.result .stars{display:grid;grid-template-columns:repeat(8,1fr);width:min(100%,320px);gap:6px}.result .stars span{min-width:0}
.maze-board{max-width:530px}.maze-cell.player,.maze-cell.goal{font-size:clamp(.65rem,2.7vw,1rem)}.maze-cell.player{box-shadow:inset 0 0 0 2px #ffddaa}.maze-cell.trail:after{width:4px;height:4px}.next-piece{display:flex;align-items:center;justify-content:center;gap:18px;min-height:58px;margin:-8px 0 12px;color:var(--mint);font-weight:700}#nextShape{display:grid;gap:2px}#nextShape span{width:18px;height:18px;border-radius:2px}
@media(max-width:700px){.board-wrap{width:min(100%,270px,32svh)}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.confetti-piece{display:none}}
.practice-entry{display:flex;justify-content:space-between;align-items:center;gap:20px;background:#233d43;border:1px solid #65968a;padding:22px 24px;border-radius:16px;margin-top:20px}.practice-entry h2{margin:0;font-size:1.3rem}.practice-entry p:not(.eyebrow){margin:9px 0 0;color:var(--muted);line-height:1.7}.practice-entry .btn{flex-shrink:0}.practice-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.practice-choice{display:grid;gap:14px;text-align:left;background:var(--panel);border:1px solid #65877d;border-radius:18px;color:var(--text);padding:25px}.practice-choice>span{font-size:2rem;color:var(--mint)}.practice-choice strong{font-size:1.25rem}.practice-choice small{font-size:1rem;color:var(--muted);line-height:1.7}.practice-choice:hover{border-color:var(--gold)}@media(max-width:700px){.practice-entry{align-items:stretch;flex-direction:column;padding:20px}.practice-grid{grid-template-columns:1fr}.practice-choice{padding:20px}}