:root{--txt:#f6fbff;--muted:#a5b9c9;--line:#bde6e555;--panel:#071a2fcc;--accent:#8df5db}*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--txt);font:14px system-ui,"Microsoft YaHei",sans-serif;background:linear-gradient(110deg,#071522c9,#0715229c),url('guofeng-background.png') center/cover fixed no-repeat}body.day{filter:saturate(.9) brightness(1.22)}#stage{min-height:100vh;max-width:1360px;margin:auto;padding:18px 24px;background:linear-gradient(120deg,#061a2699,#14102d88)}header{display:flex;justify-content:space-between;align-items:center;height:44px}header b{font-size:19px;letter-spacing:.06em}nav{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}button{border:1px solid var(--line);background:#ffffff18;color:var(--txt);border-radius:10px;padding:8px 11px;cursor:pointer}button:hover{border-color:var(--accent);background:#8df5db22}.primary{background:linear-gradient(100deg,#71eaff,#86ffd0);border:0;color:#061421;font-weight:800}.game{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;margin-top:14px}.board-card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:22px;backdrop-filter:blur(13px);box-shadow:0 18px 50px #0005}.board-card{padding:17px}.board-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.board-head b{display:block;font-size:18px}.board-head small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.board{width:min(100%,calc(100vh - 155px));aspect-ratio:1;margin:auto;display:grid;grid-template-columns:repeat(15,1fr);padding:3%;border-radius:18px;background:linear-gradient(135deg,#c4f0d1dd,#609b8bdc);box-shadow:0 0 0 5px #b8ffe844,0 20px 40px #0006}.cell{display:flex;align-items:center;justify-content:center;border-right:1px solid #102d3f66;border-bottom:1px solid #102d3f66;cursor:pointer}.cell:nth-child(-n+15){border-top:1px solid #102d3f66}.cell:nth-child(15n+1){border-left:1px solid #102d3f66}.stone{width:76%;height:76%;border-radius:50%;box-shadow:inset -4px -5px 8px #0005,2px 3px 6px #0005}.black{background:radial-gradient(circle at 32% 25%,#607581,#07131b 48%,#02070b)}.white{background:radial-gradient(circle at 32% 25%,#fff,#c8e1e7 65%,#8ba5ae)}.last{outline:3px solid #d7fff3;outline-offset:2px}aside{display:flex;flex-direction:column;gap:14px}.panel{padding:17px}.panel label{color:#7eeaff;font-size:11px;font-weight:800;letter-spacing:.18em}.opponent{display:flex;align-items:center;gap:11px;margin-top:13px}.opponent i{width:42px;height:42px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,#85efff,#846dff);color:#07111f;font-size:22px;font-style:normal}.opponent small{display:block;color:var(--muted);font-weight:400;margin-top:4px}.opponent em{margin-left:auto;width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}.progress{height:8px;background:#fff2;border-radius:99px;margin:14px 0 11px}.progress span{display:block;width:12%;height:100%;border-radius:99px;background:linear-gradient(90deg,#72eaff,var(--accent))}.route{display:flex;align-items:center;gap:8px;color:#7eeaff}.route span{height:1px;background:var(--line);flex:1}.route i{font-style:normal;color:var(--muted)}.panel p{color:var(--muted);line-height:1.6}.levels{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}.levels button{padding:7px 4px;margin:0}.levels .active{color:#7eeaff;border-color:#7eeaff;background:#7eeaff22}.levels button:disabled{opacity:.45;cursor:not-allowed}footer{text-align:center;color:#c0d4dcbb;font-size:11px;letter-spacing:.12em;padding:15px}@media(max-width:900px){#stage{padding:12px}.game{grid-template-columns:1fr}.board{width:min(100%,calc(100vw - 55px))}aside{display:grid;grid-template-columns:1fr 1fr}.tip{grid-column:1/-1}}@media(max-width:540px){header{height:auto;align-items:flex-start;gap:10px}nav{gap:4px}nav button{padding:7px 8px;font-size:11px}.board-head{align-items:flex-start;gap:8px}.board-head>span:last-child{display:flex;flex-wrap:wrap;justify-content:flex-end}.board-head button{padding:7px 8px}aside{display:flex}}