:root{--tile-w:50px;--tile-h:66px;--tile-sm-w:36px;--tile-sm-h:48px;--tile-symbol:1.4em;--tile-sm-symbol:1em;--gap-hand:2px;--gap-actions:12px;--btn-padding:10px 24px;--btn-primary-padding:14px 32px;--banner-font:2.5rem}.app{color:#e8e8e8;background:radial-gradient(at 20%,#1e5a3266 0%,#0000 60%),radial-gradient(at 80%,#1446284d 0%,#0000 60%),repeating-linear-gradient(0deg,#0000,#0000 2px,#00000008 2px 4px),repeating-linear-gradient(90deg,#0000,#0000 2px,#00000005 2px 4px),linear-gradient(135deg,#1a5c2e 0%,#14472a 40%,#0f3a22 100%);flex-direction:column;max-width:800px;min-height:100dvh;margin:0 auto;padding:8px;font-family:"M PLUS Rounded 1c",Segoe UI,sans-serif;display:flex;overflow-x:hidden}.app__header{text-align:center;border-bottom:1px solid #2a6a3a;padding:8px 0}.app__header h1{color:#90ee90;margin:0;font-size:1.4rem}.logo{vertical-align:middle;align-items:center;gap:6px;display:inline-flex}.logo--large{gap:10px}.logo__icon{filter:drop-shadow(0 2px 4px #0000004d);flex-shrink:0}.logo__text{color:#e8dcc8;text-shadow:0 1px 2px #00000080,0 0 20px #4caf504d;letter-spacing:.08em;font-weight:700}.logo--large .logo__text{background:linear-gradient(#f5e6c8 0%,#d4a853 100%);-webkit-text-fill-color:transparent;filter:drop-shadow(0 2px 4px #00000080);-webkit-background-clip:text;background-clip:text}.header__content{justify-content:space-between;align-items:center;display:flex}.header__logo{text-decoration:none}.header__nav{align-items:center;gap:12px;font-size:.85rem;display:flex}.header__user{color:gold}.header__link{color:#90ee90;text-decoration:none}.header__link:hover{text-decoration:underline}.header__btn{color:#aaa;cursor:pointer;background:0 0;border:1px solid #555;border-radius:4px;padding:4px 10px;font-size:.85rem}.header__btn:hover{background:#333}.lobby{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:20px;display:flex}.lobby__hero{margin-bottom:12px;animation:.6s ease-out fade-in}@keyframes fade-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.lobby p{color:#aaa;font-size:1.1rem}.lobby__spinner{border:3px solid #333;border-top-color:#90ee90;border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.login-form{background:#0d2818;border-radius:12px;flex-direction:column;align-items:center;gap:12px;width:100%;max-width:320px;padding:20px;display:flex}.login-form h3{color:#90ee90;margin:0}.login-form__input{color:#e0e0e0;box-sizing:border-box;background:#1a472a;border:1px solid #333;border-radius:8px;width:100%;padding:10px 12px;font-size:1rem}.login-form__input:focus{border-color:#4caf50;outline:none}.login-form__error{color:#ff6b6b;margin:0;font-size:.9rem}.login-form__link{color:#90ee90;font-size:.9rem}.top-page__links{align-items:center;gap:16px;display:flex}.top-page__links a{color:#90ee90}.mypage-stats{background:#0d2818;border-radius:12px;flex-direction:column;gap:12px;width:100%;max-width:320px;margin:0 auto;padding:20px;display:flex}.mypage-stats__item{justify-content:space-between;display:flex}.mypage-stats__label{color:#888}.mypage-stats__value{color:gold;font-weight:700}.mypage-stats__value--positive{color:#4caf50}.mypage-stats__value--negative{color:#f44336}.mypage-rating-history{background:#0d2818;border-radius:12px;flex-direction:column;gap:8px;width:100%;max-width:320px;padding:16px;display:flex}.mypage-rating-history--empty,.mypage-rating-history--error{text-align:center;color:#888;font-size:14px}.mypage-rating-history--error{color:#e57373}.mypage-rating-history__title{color:#888;margin:0;font-size:14px;font-weight:500}.rating-chart{flex-direction:column;gap:8px;display:flex}.rating-chart__svg{width:100%;height:auto;display:block}.rating-chart__line{fill:none;stroke:gold;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round}.rating-chart__area{fill:#ffd7001f;stroke:none}.rating-chart__dot{fill:gold;stroke:#0d2818;stroke-width:2px}.rating-chart__legend{justify-content:space-between;gap:8px;font-size:12px;display:flex}.rating-chart__legend-item{flex-direction:column;align-items:center;gap:2px;display:flex}.rating-chart__legend-label{color:#888}.rating-chart__legend-value{color:#e0e0e0;font-weight:600}.rating-chart__legend-item--diff.is-up .rating-chart__legend-value{color:#66bb6a}.rating-chart__legend-item--diff.is-down .rating-chart__legend-value{color:#e57373}.mypage-badges{background:#00000040;border:1px solid #ffd70026;border-radius:12px;width:100%;max-width:360px;margin:16px auto 0;padding:14px 12px}.legal-page>.mypage-stats,.legal-page>.mypage-badges,.legal-page>.mypage-rating-history,.legal-page>.mypage-match-history,.legal-page>.mypage__section{margin-top:20px;margin-bottom:8px}.legal-page>h1+.mypage-stats{margin-top:12px}.mypage-rating-history,.mypage-match-history,.mypage__section{box-sizing:border-box;background:#00000040;border:1px solid #ffd70026;border-radius:12px;width:100%;max-width:560px;margin:20px auto 8px;padding:14px 16px}.mypage-rating-history--empty,.mypage-match-history--empty{color:#ffffff8c;text-align:center;padding:12px;font-size:.85rem}.mypage-rating-history__title,.mypage-match-history__title,.mypage__section h3{color:gold;letter-spacing:.05em;text-align:center;margin:0 0 10px;font-size:.95rem;font-weight:600}.legal-page>.action-btn,.legal-page>.mypage-premium-badge{justify-content:center;width:100%;max-width:360px;margin:12px auto 0;display:flex}.mypage__section input[type=text],.mypage__section input[type=email]{flex:200px;min-width:160px}.mypage__section .action-btn{white-space:nowrap}.mypage-badges__title{color:gold;text-align:center;letter-spacing:.1em;margin:0 0 10px;font-size:14px;font-weight:600}.badge-list__summary{color:#ffffffb3;text-align:center;margin-bottom:8px;font-size:11px}.badge-list__grid{grid-template-columns:repeat(auto-fill,minmax(82px,1fr));gap:8px;display:grid}.badge-list--empty{color:#fff9;text-align:center;padding:12px 0;font-size:13px}.badge{text-align:center;background:#ffffff08;border:1px solid #ffffff14;border-radius:8px;flex-direction:column;justify-content:flex-start;align-items:center;min-height:80px;padding:6px 4px;transition:transform 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10px;font-size:14px;font-weight:600}.mypage-match-history__error{color:#e57373;text-align:center;padding:8px;font-size:13px}.match-history--empty{color:#fff9;text-align:center;padding:12px 0;font-size:13px}.match-history__list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.match-history__item{background:#ffffff08;border-left:3px solid #fff3;border-radius:8px;padding:8px 10px}.match-history__item.is-win{border-left-color:#66bb6a}.match-history__item.is-loss{border-left-color:#e57373}.match-history__row{color:#fff;align-items:center;gap:8px;font-size:13px;display:flex}.match-history__row--sub{color:#fff9;margin-top:2px;font-size:11px}.match-history__result{border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;font-size:12px;font-weight:700;display:inline-flex}.match-history__result.is-win{color:#000;background:#66bb6a}.match-history__result.is-loss{color:#000;background:#e57373}.match-history__vs{text-overflow:ellipsis;white-space:nowrap;flex:1;font-weight:500;overflow:hidden}.match-history__reason{color:#ffffffbf;font-size:12px}.match-history__scores{flex-shrink:0}.match-history__diff{text-align:right;flex:1}.match-history__diff.is-up{color:#66bb6a}.match-history__diff.is-down{color:#e57373}.match-history__date{color:#fff6;flex-shrink:0;font-size:10px}.match-history__yaku{flex-wrap:wrap;gap:4px;margin-top:4px;display:flex}.match-history__han{color:gold;font-size:11px;font-weight:600}.match-history__yaku-tag{color:gold;background:#ffd7001f;border-radius:3px;padding:1px 6px;font-size:10px}.game-board{flex-direction:column;flex:1;justify-content:space-between;gap:8px;width:100%;padding:8px 4px;display:flex}.game-board__opponent{flex-direction:column;gap:4px;display:flex}.game-board__me{flex-direction:column;gap:4px;margin-top:auto;display:flex}.score-tag{background:linear-gradient(#0a1e14d9 0%,#05140cf2 100%);border:1px solid #ffd70033;border-radius:8px;align-items:center;gap:8px;padding:6px 14px;display:inline-flex;box-shadow:0 2px 8px #0000004d}.score-tag__label{color:#b0b8a0;text-shadow:0 1px 2px #00000080;font-size:.75rem}.score-tag__value{color:gold;text-shadow:0 0 8px #ffd7004d;font-size:1.1rem;font-weight:700}.score-tag__riichi-badge{color:#fff;background:#f44;border-radius:3px;margin-left:4px;padding:1px 5px;font-size:.7rem}.score-tag__rating{color:gold;font-variant-numeric:tabular-nums;background:#ffd7001a;border-radius:3px;margin-left:4px;padding:0 4px;font-size:.75rem;font-weight:700}.game-board__opponent .score-tag,.game-board__me .score-tag{align-self:flex-start}.score-display{background:#0d2818;border-radius:8px;justify-content:space-between;align-items:center;padding:8px 12px;display:flex}.score-display__opponent,.score-display__me{flex-direction:column;gap:2px;display:flex}.score-display__label{color:#888;font-size:.75rem}.score-display__value{color:gold;font-size:1.2rem;font-weight:700}.score-display__separator{background:#333;width:1px;height:30px}.score-display__riichi-badge{color:#fff;background:#f44;border-radius:4px;margin-left:4px;padding:2px 8px;font-size:.8rem;font-weight:700;animation:1.5s infinite riichi-pulse}@keyframes riichi-pulse{0%,to{opacity:1}50%{opacity:.6}}.tile{flex-direction:column;flex:0 1 var(--tile-w);min-width:0;max-width:var(--tile-w);height:var(--tile-h);touch-action:manipulation;cursor:pointer;background:linear-gradient(#fffef5 0%,#f0ead8 60%,#e0d8c0 100%);border-top:1px solid #b8a88a;border-bottom:3px solid #8a7a60;border-left:1px solid #b8a88a;border-right:2px solid #a09070;border-radius:5px;justify-content:center;align-items:center;padding:2px;font-family:inherit;transition:transform .15s,box-shadow .15s;display:inline-flex;position:relative;box-shadow:0 2px 4px #0000004d,inset 0 1px #ffffff1a,inset 0 -1px 2px #0000001a}.tile:hover:not(:disabled){transform:translateY(-8px);box-shadow:0 8px 16px #0006,inset 0 1px #ffffff1a}.tile--selected{border-color:#4caf50;transform:translateY(-10px);box-shadow:0 8px 20px #4caf5066,0 0 8px #4caf504d}.tile--drawn{margin-left:12px}.tile--disabled{cursor:default;opacity:.85}.tile--disabled:hover{transform:none;box-shadow:0 2px 4px #0000004d,inset 0 1px #ffffff1a}.tile--small{flex:0 1 var(--tile-sm-w);max-width:var(--tile-sm-w);height:var(--tile-sm-h);border-bottom-width:2px;border-right-width:1px;font-size:.8em;box-shadow:0 1px 3px #0000004d}.tile--facedown{cursor:default;background:linear-gradient(#e8d88c 0%,#d8c870 60%,#c4b060 100%);border-color:#b8a050 #b8a050 #a09040;box-shadow:0 2px 4px #0000004d,inset 0 1px #fff3}.tile__svg{margin:auto;display:block}.tile__img{object-fit:contain;pointer-events:none;width:100%;height:100%;display:block}.tile__symbol{font-size:var(--tile-symbol);line-height:1}.tile--small .tile__symbol{font-size:var(--tile-sm-symbol)}.tile__number{color:#333;font-size:.7rem;font-weight:700}.hand{--hand-avail-w:calc(100vw - env(safe-area-inset-left,0px) - env(safe-area-inset-right,0px) - 40px);--hand-fit-tile-w:calc((var(--hand-avail-w) - 50px) / 14);--tile-w:clamp(20px, var(--hand-fit-tile-w), 50px);--tile-h:calc(var(--tile-w) * 1.35);--tile-symbol:calc(var(--tile-w) / 38 * 1em);--hand-gap:calc(var(--tile-w) / 2);gap:var(--hand-gap);box-sizing:border-box;flex-wrap:nowrap;justify-content:center;align-items:flex-end;max-width:100%;padding:8px 4px;display:flex;overflow:hidden}.hand__main{gap:var(--gap-hand);width:calc(13 * var(--tile-w) + 12 * var(--gap-hand));flex-wrap:nowrap;flex:none;justify-content:flex-end;display:flex}.hand__drawn-slot{width:var(--tile-w);height:var(--tile-h);flex:none;justify-content:center;align-items:center;display:flex}.hand__drawn-slot .tile--drawn{margin-left:0}@media (width<=600px){.hand{padding:6px 2px}}@media (width<=480px){.hand{padding:4px 2px}}@media (width<=380px){.hand{padding:3px 2px}}.hand--opponent{gap:var(--gap-hand)}.hand--riichi-locked{outline-offset:-2px;border-radius:8px;outline:2px solid #f44}.game-board__center{flex-direction:column;flex:1;justify-content:center;gap:4px;min-height:80px;padding:6px 8px;display:flex}.discards{padding:2px 0}.discards__tiles{width:calc(5 * var(--tile-sm-w) + 8px);box-sizing:border-box;flex-wrap:nowrap;justify-content:flex-start;align-items:center;gap:2px;max-width:100%;min-height:28px;margin:0 auto;display:flex}.discards--reverse .discards__tiles{flex-direction:row-reverse}.ankans{gap:8px;padding:4px 8px;display:flex}.ankan-group{gap:1px;display:flex}.game-info{text-shadow:0 1px 2px #00000080;background:linear-gradient(#0a1e14b3 0%,#05140cd9 100%);border:1px solid #64a06426;border-radius:8px;justify-content:space-between;align-items:center;padding:6px 12px;font-size:.9rem;display:flex}.game-info__wall,.game-info__turn{color:#888}.game-info__turn--active{color:#90ee90;font-weight:700}.game-board__hand-area{position:relative}.game-board__hand-area .action-buttons{z-index:10;position:absolute;top:-4px;right:4px;transform:translateY(-100%)}.action-buttons{flex-direction:column;align-items:stretch;gap:6px;padding:4px;display:flex}.action-buttons__row{grid-template-columns:1fr 1fr;gap:6px;display:grid}.action-buttons .action-btn{width:100%;min-width:0;min-height:40px;padding:8px 10px;font-size:.9rem}.action-buttons .action-btn--draw,.action-buttons .action-btn--win,.action-buttons .action-btn--tsumo,.action-buttons .action-btn--ron,.action-buttons .action-btn--ankan,.action-buttons .action-btn--riichi{min-height:40px;padding:8px 10px;font-size:.9rem}.ron-banner{color:#ff80ab;background:#e91e6333;border:1px solid #e91e63;border-radius:6px;padding:4px 12px;font-size:.85rem;font-weight:700;animation:1.5s ease-in-out infinite pulse-glow}.action-btn{padding:var(--btn-padding);cursor:pointer;color:#fff;text-shadow:0 1px 2px #0000004d;background:linear-gradient(#555 0%,#3a3a3a 100%);border:none;border-radius:8px;justify-content:center;align-items:center;min-width:44px;min-height:44px;font-size:1rem;font-weight:700;text-decoration:none;transition:background .2s,transform .1s,box-shadow .2s;display:inline-flex;box-shadow:0 2px 4px #0000004d}a.action-btn,a.action-btn:hover,a.action-btn:visited,a.action-btn:focus{color:#fff;text-decoration:none}.action-btn:hover{filter:brightness(1.15);transform:translateY(-1px);box-shadow:0 4px 8px #0006}.action-btn--primary{background:linear-gradient(180deg, var(--btn-primary-bg-top) 0%, var(--btn-primary-bg-bottom) 100%);color:var(--btn-primary-fg,#fff);padding:var(--btn-primary-padding);font-size:1.2rem;box-shadow:0 3px 6px #0000004d}body,body.theme-green{--btn-primary-bg-top:#5cbf60;--btn-primary-bg-bottom:#43a047;--btn-primary-fg:#fff}body.theme-dark{--btn-primary-bg-top:#64b5f6;--btn-primary-bg-bottom:#1976d2;--btn-primary-fg:#fff}body.theme-light{--btn-primary-bg-top:#66bb6a;--btn-primary-bg-bottom:#2e7d32;--btn-primary-fg:#fff}.action-btn--share{background:#1da1f2}.action-btn--invite{border:1.5px solid var(--app-accent);color:var(--app-fg);text-shadow:none;box-shadow:none;background:0 0;font-weight:600}.action-btn--invite:hover:not(:disabled){background:color-mix(in srgb, var(--app-accent) 12%, transparent);filter:none;box-shadow:0 0 0 3px color-mix(in srgb, var(--app-accent) 18%, transparent);transform:none}.action-btn--secondary{background:linear-gradient(180deg, var(--btn-secondary-bg-top) 0%, var(--btn-secondary-bg-bottom) 100%)}body,body.theme-green{--btn-secondary-bg-top:#26a69a;--btn-secondary-bg-bottom:#00796b}body.theme-dark{--btn-secondary-bg-top:#9575cd;--btn-secondary-bg-bottom:#5e35b1}body.theme-light{--btn-secondary-bg-top:#26a69a;--btn-secondary-bg-bottom:#00695c}.lobby>.action-btn,.lobby>.invite-panel>.action-btn{width:240px;max-width:100%}.lobby>.action-btn--primary{padding:var(--btn-padding);font-size:1rem}.invite-code{text-align:center;margin:16px 0}.invite-code__label{color:#aaa;margin-bottom:4px;font-size:.9rem}.invite-code__value{letter-spacing:.3em;color:#90ee90;font-family:monospace;font-size:2.5rem;font-weight:700}.invite-panel{flex-direction:column;align-items:center;gap:6px;display:flex}.invite-panel__row{align-items:center;gap:6px;display:flex}.invite-panel__input{text-align:center;letter-spacing:.2em;color:#e0e0e0;text-transform:uppercase;background:#2a4a2a;border:2px solid #4caf50;border-radius:8px;width:5em;padding:6px 8px;font-family:monospace;font-size:1.1rem}.invite-panel__join{min-height:38px;padding:6px 16px!important;font-size:.9rem!important}.invite-panel__close{min-width:38px;min-height:38px;padding:6px 10px!important;font-size:1rem!important}.invite-panel__error{color:#ff6b6b;margin:0;font-size:.85rem}.action-btn--tsumo,.action-btn--ron,.action-btn--win{background:linear-gradient(#e91e63 0%,#c2185b 100%);min-height:36px;padding:6px 14px;font-size:.85rem}.action-btn--riichi{background:linear-gradient(#2196f3 0%,#1976d2 100%);min-height:36px;padding:6px 14px;font-size:.85rem}.action-btn--ankan{background:linear-gradient(#ff9800 0%,#f57c00 100%);min-height:36px;padding:6px 14px;font-size:.85rem}.action-btn--draw{background:linear-gradient(#2196f3,#1565c0);width:100%;min-height:36px;padding:6px 14px;font-size:.85rem}.action-btn:disabled,.action-btn[disabled]{pointer-events:none;opacity:.4!important;cursor:not-allowed!important;color:#888!important;box-shadow:none!important;text-shadow:none!important;background:linear-gradient(#444 0%,#333 100%)!important;border-color:#0000!important;transform:none!important}.action-btn:disabled:hover,.action-btn[disabled]:hover{filter:none;box-shadow:none;transform:none}.action-btn--ready{animation:1.5s ease-in-out infinite pulse-glow;box-shadow:0 0 12px #e91e6380}.round-result{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:20px;padding:20px;display:flex}.round-result__banner{font-size:var(--banner-font);border-radius:12px;padding:12px 40px;font-weight:700}.round-result__banner--win{color:gold;background:#ffd7001a;border:2px solid gold}.round-result__banner--lose{color:#ff6b6b;background:#ff6b6b1a;border:2px solid #ff6b6b}.round-result__banner--draw{color:#aaa;background:#8080801a;border:2px solid 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