:root{--ink:#263c34;--green:#235b4b;--cream:#faf7ee;--gold:#c99950}*{box-sizing:border-box}body{margin:0;background:#f2f6ed;color:var(--ink);font-family:system-ui,-apple-system,'Apple SD Gothic Neo',sans-serif}button,select,input{font:inherit}button{cursor:pointer;border:1px solid #d6ddcf;background:#fffdf7;color:var(--ink);padding:10px 15px;border-radius:10px;font-weight:700}button:hover:not(:disabled){background:#ecf1e5}button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #448c77;outline-offset:3px}button:disabled{opacity:.45;cursor:default}[hidden]{display:none!important}.gomoku-main{max-width:1150px;padding:18px 20px 25px;margin:auto}.game-cabinet{border:1px solid #d9dfd1;background:var(--cream);border-radius:22px;box-shadow:0 12px 36px #29472b0b;overflow:hidden}.cabinet-head{padding:16px 24px;border-bottom:1px solid #e5e7db;display:flex;justify-content:space-between;align-items:center;gap:12px}.wordmark{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:800}.wordmark small{display:block;font-size:9px;letter-spacing:3px;margin-top:3px;color:#6b8274}.stone-mark{position:relative;font-size:32px;letter-spacing:-8px;margin-right:7px}.stone-mark i{font-style:normal;color:#788679}.mode-tabs{background:#e9eddf;padding:4px;border-radius:12px;display:flex}.mode-tabs button{border:0;background:transparent;font-size:13px}.mode-tabs button[aria-pressed=true]{background:#fffdf6;box-shadow:0 2px 5px #334b2f12}.play-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:30px;padding:20px 28px}.board-area{min-width:0;max-width:650px;width:100%;justify-self:center}.match-bar{display:flex;justify-content:space-between;font-size:11px;letter-spacing:1px;color:#6b7f71;margin-bottom:12px}.players{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:14px}.player{display:flex;align-items:center;gap:10px;border:1px solid #e3e5d7;border-radius:12px;padding:10px 12px;flex:1;min-width:0;background:#f2f2e8}.player.active{background:#fffdf6;border-color:#bda376;box-shadow:0 0 0 2px #caa35e18}.player>div{min-width:0}.player small{display:block;font-size:10px;color:#7e8476;margin-bottom:3px}.player strong{display:block;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.player>b{margin-left:auto;font-size:19px;font-variant-numeric:tabular-nums;white-space:nowrap}.player>b.urgent{color:#b54d33}.stone{display:inline-block;width:26px;height:26px;border-radius:50%;flex-shrink:0;box-shadow:1px 3px 5px #151d2830}.stone.black{background:radial-gradient(circle at 33% 26%,#687077,#22292c 58%,#15191b)}.stone.white{background:radial-gradient(circle at 35% 25%,#fff,#eeeee5 70%,#c0c1b5);border:1px solid #dddfd1}.versus{font-size:10px;color:#8c9585;font-weight:800}.board-frame{padding:14px;background:linear-gradient(135deg,#eac991,#dfb477);border:1px solid #bd8d50;border-radius:8px;box-shadow:0 4px 0 #b78a52,0 10px 18px #86612f18;max-width:100%;margin:auto;width:min(100%,calc(100dvh - 540px));min-width:240px}#board{display:grid;grid-template-columns:repeat(15,1fr);aspect-ratio:1;position:relative;background:repeating-linear-gradient(0deg,#ffffff05 0px,#67411b05 1px,transparent 2px,transparent 7px)}.cell{min-width:0;min-height:0;padding:0;border:0;border-radius:0;position:relative;background:linear-gradient(#6d512487,#6d512487) center/1px 100% no-repeat,linear-gradient(#6d512487,#6d512487) center/100% 1px no-repeat;aspect-ratio:1}.cell:hover:not(:disabled){background-color:#fff3}.cell:focus-visible{outline:2px solid #27674c;outline-offset:-2px;z-index:2}.cell:disabled{opacity:1}.cell::before{content:'';position:absolute;inset:7%;border-radius:50%;pointer-events:none}.cell.black::before{background:radial-gradient(circle at 32% 25%,#687078,#242b2d 60%,#101615);box-shadow:1px 2px 3px #21191166}.cell.white::before{background:radial-gradient(circle at 34% 25%,#fff,#f0eee4 65%,#cbc9b9);box-shadow:1px 2px 3px #21191144}.cell.last::after{content:'';position:absolute;width:18%;height:18%;top:41%;left:41%;background:#d29b50;border-radius:50%}.cell.forbidden::after{content:'×';color:#b0583c90;font-size:clamp(9px,1vw,14px);position:absolute;inset:0;display:grid;place-items:center}.cell.star:not(.black):not(.white)::before{inset:43%;background:#6c5128}.board-toolbar{display:flex;align-items:center;gap:8px;min-height:44px;margin-top:14px}.board-toolbar p{font-size:13px;font-weight:750;margin:0;flex:1}.board-toolbar>span{font-size:11px;color:#7c8877;white-space:nowrap}.message{margin:0;min-height:30px;font-size:12px;line-height:1.6;color:#7b8070}.game-aside{border-left:1px solid #e3e5d6;padding-left:28px;display:flex;flex-direction:column;gap:18px}.eyebrow{font-size:9px;letter-spacing:2px;font-weight:700;color:#939a80}.intro-card h2{font-family:Georgia,serif;font-size:32px;line-height:1.45;margin:16px 0 10px;letter-spacing:-1px}.intro-card h2 em{color:#347454;font-style:normal}.intro-card p{font-size:12px;line-height:1.7;color:#7b8676}.five-stones{display:flex;gap:7px;margin:20px 0}.five-stones i{height:14px;width:14px;border-radius:50%;background:#344c3e}.five-stones i:last-child{background:#bba070}.settings-card{border-top:1px solid #e0e4d3;padding-top:18px;display:grid;gap:10px}.settings-card label{font-size:11px;font-weight:750}.settings-card select,.room-form input,.room-form select{background:#fffef8;border:1px solid #dce0ce;border-radius:9px;padding:10px;color:var(--ink);width:100%;font-size:12px}.settings-card small{font-size:10px;color:#858e7a;text-align:center}.settings-card h3,.settings-card p{margin:0;overflow-wrap:anywhere}.settings-card p{font-size:12px;line-height:1.6}.primary{background:var(--green);color:#fff;border-color:var(--green)}.primary:hover:not(:disabled){background:#33785d}.rules-note{font-size:11px;line-height:1.9;color:#78836e;margin-top:auto}.rules-note b{color:#4c654e}.rules-note p{margin:5px 0}.rules-note span{font-size:10px}dialog{width:min(560px,calc(100% - 28px));max-height:85dvh;border:1px solid #d5dbc7;border-radius:18px;padding:22px;background:#faf9f1;color:var(--ink);box-shadow:0 20px 70px #142b3244}dialog::backdrop{background:#172f3460;backdrop-filter:blur(3px)}.panel-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.panel-heading h2{font-size:20px;margin:0}.panel-heading button{padding:6px 11px}.room-form{display:grid;gap:10px;padding:16px;background:#edf0e4;border-radius:12px;margin:15px 0}.room-form label{font-size:12px}.room-list{display:grid;gap:8px}.room-row{display:flex;align-items:center;gap:10px;justify-content:space-between;padding:14px;border:1px solid #e0e2d5;border-radius:12px;background:#fffef8}.room-row strong{display:block;overflow-wrap:anywhere}.room-row small{color:#829079;display:block;margin-top:5px}.room-row button{flex-shrink:0}.panel-copy{font-size:13px;line-height:1.85}.panel-error{font-size:13px;color:#a74d32;min-height:22px}.room-links{display:flex;gap:8px;flex-wrap:wrap}.login-link{display:inline-block;background:var(--green);color:white;padding:10px 15px;border-radius:10px;text-decoration:none}.bi-page .mk-legal-footer{padding:8px!important}
@media (max-height:820px) and (min-width:801px){.gomoku-main{padding-top:10px}.cabinet-head{padding:10px 22px}.play-layout{padding:12px 20px;gap:22px}.intro-card h2{font-size:26px;margin:8px 0}.intro-card p,.five-stones{display:none}.game-aside{gap:12px}.settings-card{padding-top:12px;gap:7px}.rules-note{font-size:10px}.board-frame{width:min(100%,calc(100dvh - 480px))}.players{margin-bottom:10px}.player{padding:7px 10px}.match-bar{margin-bottom:8px}}
@media(max-width:800px){.gomoku-main{padding:10px}.cabinet-head{padding:12px}.wordmark{font-size:15px}.wordmark small{font-size:7px}.mode-tabs button{padding:9px 12px;font-size:12px}.play-layout{display:block;padding:12px}.board-frame{width:min(100%,520px);min-width:0;padding:10px}.game-aside{border:0;padding:0;display:block}.intro-card{display:none}.settings-card{grid-template-columns:1fr 1fr;gap:8px;margin-top:5px;padding-top:12px}.settings-card label{display:none}.settings-card small{align-self:center}.settings-card h3,.settings-card p{grid-column:1/-1}.rules-note{margin-top:12px}.rules-note p{display:inline;margin-left:8px}.rules-note span{display:none}.player{padding:8px}.player strong{font-size:12px}.player>b{font-size:16px}.stone{width:22px;height:22px}.message{min-height:26px}.board-toolbar{margin-top:10px}.board-toolbar p{font-size:11px}.wordmark .stone-mark{font-size:25px}.match-bar{font-size:10px}.bi-page .bi-titlebar{padding-top:8px;padding-bottom:8px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

@media(min-width:801px){.intro-card p{display:none}.intro-card h2{font-size:28px;margin:10px 0}.five-stones{margin:14px 0}.game-aside{gap:12px}.settings-card{padding-top:12px;gap:8px}.rules-note{line-height:1.7}}

.result-dialog{width:min(440px,calc(100vw - 32px));box-sizing:border-box;text-align:center;padding:32px 24px;border:2px solid #d6b76d;border-radius:24px;background:linear-gradient(160deg,#fffdf6,#fff1c9);color:#3d342a;box-shadow:0 24px 100px #17120d66;max-height:calc(100dvh - 32px);overflow:auto}.result-dialog::backdrop{background:#171a27a8;backdrop-filter:blur(4px)}.result-dialog h2{font-size:clamp(24px,6vw,34px);line-height:1.35;margin:12px 0;overflow-wrap:anywhere}.result-dialog p{line-height:1.6}.result-stones{font-size:44px;letter-spacing:10px;text-shadow:0 4px 10px #0002}.result-hint{min-height:3em;font-size:14px;color:#71634f}.result-actions{display:grid;gap:10px;margin-top:20px}.result-actions button{min-height:48px;font:inherit;font-weight:800;border-radius:12px;cursor:pointer}.result-actions button:disabled{opacity:.6;cursor:default}