:root{color:#172033;background:#f3f5f0;font-family:Inter,Pretendard,Noto Sans KR,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default}.app-shell{min-height:100vh}.start-screen{display:grid;min-height:100vh;align-items:center;padding:7vh 8vw;background:linear-gradient(90deg,#172033d6,#17203347),url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 800'%3E%3Crect width='1200' height='800' fill='%23d9efe6'/%3E%3Cg fill='none' stroke='%23172033' stroke-width='9' opacity='.42'%3E%3Cpath d='M120 610 360 170 570 650Z'/%3E%3Cpath d='M690 180 1040 250 850 650Z'/%3E%3Cpath d='M430 330 590 110 790 390Z'/%3E%3C/g%3E%3Cg fill='%23efc94c' opacity='.78'%3E%3Ccircle cx='185' cy='610' r='10'/%3E%3Ccircle cx='360' cy='170' r='10'/%3E%3Ccircle cx='570' cy='650' r='10'/%3E%3C/g%3E%3C/svg%3E");background-size:cover;color:#fff}.start-screen>div{max-width:900px}.eyebrow{margin:0 0 10px;font-size:1rem;font-weight:800;color:#2b7469}.start-screen .eyebrow{color:#f4d45d}h1,h2,h3,p{margin-top:0}h1{margin-bottom:18px;font-size:clamp(4rem,10vw,8.6rem);line-height:.9}h2{margin-bottom:4px;font-size:2.6rem;line-height:1}h3{margin-bottom:14px;font-size:1.2rem}.lead{max-width:760px;font-size:2rem;font-weight:700}.notice,.math-warning{max-width:1100px;border-left:8px solid #efc94c;padding:18px 22px;background:#ffffffe6;color:#172033;font-size:1.22rem;font-weight:800}.primary-action,.ghost-button{min-height:54px;border:0;border-radius:8px;padding:0 26px;font-weight:900}.primary-action{background:#efc94c;color:#172033;box-shadow:0 10px #b58d1c}.primary-action.small,.ghost-button{min-height:46px;box-shadow:none}.ghost-button{border:2px solid #172033;background:#fff;color:#172033}.screen-panel{min-height:100vh;padding:32px}.screen-header{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:28px}.header-actions{display:flex;gap:12px}.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(280px,1fr));gap:18px}.setting-block,.placeholder-panel{border:2px solid #d5ddd4;border-radius:8px;padding:20px;background:#fff}.order-block{grid-row:span 2}.segmented{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.segmented button{min-height:56px;border:2px solid #c5d1cc;border-radius:8px;background:#f8faf6;font-weight:900}.segmented button.active{border-color:#2b7469;background:#d9efe6;color:#17483f}.number-field{display:inline-flex;align-items:center;gap:8px;font-size:1.25rem;font-weight:900}.number-field input{width:92px;border:2px solid #bdc8c1;border-radius:8px;padding:10px 12px;font-weight:900}.score-row,.switch-row{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:10px;font-weight:800}.switch-row{justify-content:flex-start;font-size:1.4rem}.switch-row input{width:28px;height:28px}.order-list{display:grid;gap:10px}.order-item{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;border:2px solid #d5ddd4;border-radius:8px;padding:12px;background:#f8faf6}.drag-handle{text-align:center;font-size:1.4rem;font-weight:900}.move-buttons{display:flex;gap:6px}.move-buttons button{width:42px;height:42px;border:0;border-radius:8px;background:#172033;color:#fff;font-weight:900}.summary-list{display:grid;grid-template-columns:repeat(2,minmax(260px,1fr));gap:14px;margin-top:24px}.summary-list div{display:flex;justify-content:space-between;gap:18px;border-bottom:2px solid #d5ddd4;padding:18px 0;font-size:1.45rem}.summary-list dt{font-weight:800;color:#50605d}.summary-list dd{margin:0;font-weight:900}.game-layout{display:grid;grid-template-columns:minmax(300px,380px) 1fr;min-height:100vh;background:#eef4ee}.game-sidebar{display:flex;flex-direction:column;gap:16px;padding:24px;background:#fff;border-right:3px solid #d5ddd4}.turn-card{border-radius:8px;padding:18px;background:#172033;color:#fff}.turn-card span{display:block;margin-bottom:8px;font-weight:800;color:#efc94c}.turn-card strong{font-size:3rem;line-height:1}.info-row,.score-row-board{display:flex;justify-content:space-between;gap:14px;border-bottom:2px solid #e1e7e0;padding:10px 0;font-weight:900}.scoreboard{margin-top:4px}.score-row-board.active{margin:8px -8px;border:0;border-radius:8px;padding:12px 8px;background:#d9efe6;color:#17483f}.game-message,.validation-warning{border-radius:8px;padding:14px;background:#fff7df;font-weight:900}.validation-warning{background:#ffe4df}.sidebar-actions{display:grid;gap:10px;margin-top:auto}.board-wrap{display:flex;flex-direction:column;gap:12px;min-width:0;padding:22px}.memory-banner{display:flex;align-items:center;justify-content:space-between;gap:18px;border:3px solid #172033;border-radius:8px;padding:14px 18px;background:#fff}.memory-banner strong{font-size:clamp(1.4rem,2.3vw,2.4rem);font-weight:900}.memory-banner span{font-size:clamp(1rem,1.4vw,1.3rem);font-weight:900;color:#50605d}.memory-banner.active{border-color:#efc94c;background:#fff7df}.card-grid{--min-card: clamp(126px, calc(82vw/max(var(--card-count), 6)*2.1) , 245px);display:grid;grid-template-columns:repeat(auto-fit,minmax(var(--min-card),1fr));align-content:start;gap:12px;height:100%}.triangle-card{aspect-ratio:4 / 3;min-height:132px;border:3px solid #172033;border-radius:8px;padding:0;overflow:hidden;background:#fff;color:#172033;transition:transform .12s ease,border-color .12s ease}.triangle-card:not(:disabled):hover{transform:translateY(-3px)}.triangle-card.selected{border-color:#efc94c;box-shadow:inset 0 0 0 5px #efc94c}.triangle-card.matched{border-color:#2b7469;opacity:.82}.triangle-card.revealed-trap{border-color:#e0523f;background:#ffe4df}.card-front,.card-back{display:flex;flex-direction:column;width:100%;height:100%}.card-front{align-items:center;justify-content:center;padding:10px}.triangle-svg{width:100%;height:100%;min-height:112px}.triangle-svg text{fill:#172033;font-size:11.5px;font-weight:900;paint-order:stroke;stroke:#fff;stroke-width:3.25px}.right-angle-mark{stroke-linecap:round}.card-back{align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,rgba(239,201,76,.24) 25%,transparent 25%) 0 0 / 30px 30px,linear-gradient(135deg,transparent 75%,rgba(43,116,105,.22) 75%) 0 0 / 30px 30px,#172033;color:#efc94c}.card-back span{display:grid;place-items:center;min-width:88px;height:74px;border:5px solid currentColor;border-radius:8px;padding:0 12px;background:#172033b8;font-size:clamp(3rem,6vw,5.2rem);font-weight:900;line-height:1}.back-triangle-icon{width:56px;height:48px;color:#f7dfa0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;padding:24px;background:#1720339e}.bonus-modal{width:min(680px,100%);border-radius:8px;padding:28px;background:#fff;box-shadow:0 24px 80px #00000047}.guide-modal{width:min(760px,100%);border-radius:8px;padding:34px;background:#fff;text-align:center;box-shadow:0 24px 80px #00000047}.guide-modal h3{font-size:2.2rem}.guide-modal p{font-size:1.7rem;font-weight:900;line-height:1.5}.bonus-modal h3{font-size:2rem}.bonus-options{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.bonus-options button{min-height:76px;border:3px solid #172033;border-radius:8px;background:#fff7df;font-size:1.25rem;font-weight:900}.bonus-note{margin:16px 0 0;font-weight:800;color:#50605d}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:980px){.settings-grid,.summary-list,.game-layout{grid-template-columns:1fr}.game-sidebar{border-right:0;border-bottom:3px solid #d5ddd4}}@media(max-width:680px){.screen-panel,.board-wrap,.game-sidebar{padding:16px}.screen-header,.summary-list div{align-items:stretch;flex-direction:column}.header-actions,.bonus-options,.segmented{grid-template-columns:1fr;display:grid}}