:root{--bg: #08080c;--bg-glow: rgba(212, 175, 90, .07);--panel: #14141c;--panel-2: #1a1a24;--panel-edge: rgba(212, 175, 90, .16);--line: rgba(255, 255, 255, .07);--text: #f0e8d8;--muted: #908a7c;--faint: #565248;--gold: #d4af5a;--gold-bright: #f2dc9a;--gold-deep: #8f6a22;--gold-soft: rgba(212, 175, 90, .18);--red: #c62828;--red-soft: rgba(198, 40, 40, .18);--seal: #9e1a1a;--font-display: "KaiTi", "STKaiti", "华文楷体", "Songti SC", "Noto Serif SC", serif;--font-ui: system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--board-w: min( calc(100vh - 48px) , 640px);--board-h: calc(var(--board-w) * 686 / 622)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{background:var(--bg);color:var(--text);font-family:var(--font-ui);display:flex;justify-content:center;align-items:center;position:relative}.atmosphere{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;overflow:hidden}.atm-glow{position:absolute;border-radius:50%;filter:blur(60px);opacity:.9}.atm-glow-a{width:55vw;height:45vh;left:-10%;top:-5%;background:radial-gradient(circle,rgba(212,175,90,.12),transparent 70%)}.atm-glow-b{width:50vw;height:45vh;right:-12%;bottom:-8%;background:radial-gradient(circle,rgba(160,40,40,.08),transparent 70%)}.atm-lattice{position:absolute;top:0;right:0;bottom:0;left:0;opacity:.035;background-image:linear-gradient(30deg,#d4af5a 1px,transparent 1px),linear-gradient(150deg,#d4af5a 1px,transparent 1px);background-size:28px 48px;-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 50%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse 70% 60% at 50% 50%,#000 20%,transparent 75%)}.app{position:relative;z-index:1;width:100%;max-width:fit-content;height:100dvh;padding:16px 22px;display:flex;align-items:center;justify-content:center}.main-content{display:flex;flex-direction:row;align-items:stretch;gap:36px;max-height:100%;min-height:0}.board-section{flex-shrink:0;display:flex;align-items:center;position:relative;padding:14px}.board-ornament{position:absolute;width:28px;height:28px;border-color:var(--gold-deep);border-style:solid;opacity:.55;pointer-events:none}.board-ornament-tl{top:0;left:0;border-width:2px 0 0 2px;border-radius:4px 0 0;box-shadow:inset 6px 6px 0 -4px var(--gold)}.board-ornament-tr{top:0;right:0;border-width:2px 2px 0 0;border-radius:0 4px 0 0;box-shadow:inset -6px 6px 0 -4px var(--gold)}.board-ornament-bl{bottom:0;left:0;border-width:0 0 2px 2px;border-radius:0 0 0 4px;box-shadow:inset 6px -6px 0 -4px var(--gold)}.board-ornament-br{bottom:0;right:0;border-width:0 2px 2px 0;border-radius:0 0 4px;box-shadow:inset -6px -6px 0 -4px var(--gold)}.board-frame{position:relative;border-radius:16px;padding:5px;background:linear-gradient(145deg,#f0d78c,#d4a853 22%,#a87828 48%,#6e4e14 72%,#e0b85c);box-shadow:0 0 0 1px #f0d78c59,0 0 40px #d4af5a14,0 20px 56px #0009,0 6px 16px #0006,inset 0 1px #ffffff59,inset 0 -1px #00000040}.board-frame-inner{position:relative;border-radius:12px;padding:2px;background:linear-gradient(180deg,#28190880,#140c0459);box-shadow:inset 0 0 0 1px #3c280f73}#gameCanvas{display:block;border-radius:10px;width:var(--board-w);height:var(--board-h);background:transparent;cursor:default;-webkit-user-select:none;user-select:none;touch-action:none}.end-seal{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none;z-index:5;background:#08080cb8;border-radius:12px;animation:seal-in .55s cubic-bezier(.2,.9,.3,1.15) both}.end-seal[hidden]{display:none}.end-seal-char{width:5.2rem;height:5.2rem;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-size:2.6rem;font-weight:700;color:#f8d0d0;background:radial-gradient(circle at 28% 25%,rgba(255,140,120,.4),transparent 50%),linear-gradient(155deg,#d44545 0%,var(--seal) 50%,#5a0c0c 100%);border:3px solid rgba(255,190,170,.55);border-radius:8px;box-shadow:0 8px 28px #500a0a8c,inset 0 0 0 2px #5a0f0f66,0 0 40px #c6282840;transform:rotate(-12deg);text-shadow:0 1px 0 rgba(0,0,0,.35);letter-spacing:.05em}.end-seal-sub{margin-top:12px;font-family:var(--font-display);font-size:.95rem;letter-spacing:.28em;color:var(--gold-bright);text-shadow:0 2px 12px rgba(0,0,0,.7);background:#0a0a0e8c;padding:4px 14px 4px 18px;border-radius:999px;border:1px solid rgba(212,175,90,.25)}.play-again{pointer-events:auto;margin-top:24px;min-width:160px;font-size:1rem}@keyframes seal-in{0%{opacity:0;transform:scale(1.35);filter:blur(4px)}to{opacity:1;transform:scale(1);filter:blur(0)}}.check-flash{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;pointer-events:none;z-index:4;background:radial-gradient(circle at 50% 48%,rgba(120,10,10,.22),transparent 58%);animation:check-flash-in .85s ease-out both}.check-flash[hidden]{display:none!important}.check-flash-char{font-family:var(--font-display);font-size:clamp(3.5rem,12vw,5.5rem);font-weight:700;color:#ff6b6b;letter-spacing:.12em;text-shadow:0 0 2px #5a0000,0 0 24px rgba(255,60,40,.75),0 4px 0 rgba(80,0,0,.45),0 0 60px rgba(200,30,20,.4);transform:rotate(-14deg);border:4px solid rgba(255,120,100,.55);border-radius:10px;padding:.12em .22em;background:radial-gradient(circle at 30% 25%,rgba(255,100,80,.25),transparent 55%),linear-gradient(155deg,#b41e1e8c,#500808b8);box-shadow:0 0 0 2px #5a0a0a80,0 12px 40px #50000073;animation:check-char-pop .85s cubic-bezier(.2,.9,.25,1.2) both}@keyframes check-flash-in{0%{opacity:0}18%{opacity:1}70%{opacity:1}to{opacity:0}}@keyframes check-char-pop{0%{opacity:0;transform:rotate(-14deg) scale(1.6);filter:blur(3px)}25%{opacity:1;transform:rotate(-14deg) scale(1);filter:blur(0)}75%{opacity:1;transform:rotate(-14deg) scale(1.02)}to{opacity:0;transform:rotate(-14deg) scale(.92)}}.board-frame.is-check{box-shadow:0 0 0 1px #ff786459,0 0 48px #c8281e38,0 20px 56px #0009,0 6px 16px #0006,inset 0 1px #ffffff59,inset 0 -1px #00000040;transition:box-shadow .35s ease}.board-frame{transition:box-shadow .35s ease}.sidebar{width:220px;display:flex;flex-direction:column;gap:12px;min-height:0;padding:4px 0 6px}.update-bar{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;border:1px solid rgba(212,175,90,.35);background:linear-gradient(160deg,#d4af5a29,#1e180ce6);box-shadow:0 4px 16px #00000040;animation:update-bar-in .35s ease-out both}.update-bar[hidden]{display:none!important}.update-bar-text{flex:1;min-width:0;font-size:.78rem;color:var(--gold-bright);font-family:var(--font-ui);letter-spacing:.04em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.update-bar-btn{border:none;border-radius:999px;padding:4px 10px;font-size:.72rem;font-family:var(--font-ui);font-weight:600;cursor:pointer;color:#1a1408;background:linear-gradient(180deg,var(--gold-bright),var(--gold));white-space:nowrap}.update-bar-btn:disabled{opacity:.75;cursor:default}.update-bar-x{border:none;background:none;color:var(--muted);font-size:1rem;line-height:1;cursor:pointer;padding:0 2px}.update-bar-x:hover{color:var(--text)}@keyframes update-bar-in{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}.brand{display:flex;flex-direction:column;align-items:stretch;gap:10px}.brand-plaque{position:relative;display:flex;align-items:stretch;justify-content:space-between;gap:12px;padding:14px 12px 14px 14px;background:linear-gradient(165deg,#282012e6,#121016f2);border:1px solid var(--panel-edge);border-radius:12px;box-shadow:0 8px 24px #00000059,inset 0 1px #ffe6b414;overflow:hidden}.brand-plaque-edge{position:absolute;top:4px;right:4px;bottom:4px;left:4px;border:1px solid rgba(212,175,90,.22);border-radius:8px;pointer-events:none}.brand-plaque-edge:before,.brand-plaque-edge:after{content:"";position:absolute;width:8px;height:8px;border-color:var(--gold);border-style:solid;opacity:.5}.brand-plaque-edge:before{top:-1px;left:-1px;border-width:1.5px 0 0 1.5px}.brand-plaque-edge:after{bottom:-1px;right:-1px;border-width:0 1.5px 1.5px 0}.brand-art{position:relative;z-index:1;display:flex;flex-direction:column;gap:.06em;margin:0;font-family:var(--font-display);font-size:1.55rem;font-weight:700;line-height:1.2;letter-spacing:.08em;background:linear-gradient(180deg,var(--gold-bright) 0%,var(--gold) 40%,var(--gold-deep) 78%,#e8c878 100%);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 1px 0 rgba(0,0,0,.65)) drop-shadow(0 0 20px rgba(212,175,90,.2));writing-mode:vertical-rl;text-orientation:upright;height:7.2rem;justify-content:space-between}.brand-char{display:block}.brand-art.is-horizontal{writing-mode:horizontal-tb;text-orientation:mixed;height:auto;flex-direction:row;gap:.14em;font-size:1.35rem;letter-spacing:.18em}.brand-seal{position:relative;z-index:1;align-self:flex-end;width:2.35rem;height:2.35rem;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-size:1.15rem;font-weight:700;color:#f5d0d0;background:radial-gradient(circle at 30% 28%,rgba(255,130,110,.4),transparent 55%),linear-gradient(145deg,#d04040,var(--seal) 55%,#5c0e0e);border:1.5px solid rgba(255,190,170,.5);border-radius:4px;box-shadow:0 3px 12px #640f0f80,inset 0 0 0 1px #460a0a66;transform:rotate(-9deg);-webkit-user-select:none;user-select:none}.brand-sub{display:flex;align-items:center;justify-content:center;gap:8px;font-size:.68rem;letter-spacing:.2em;color:var(--faint)}.brand-sub-line{flex:1;height:1px;max-width:36px;background:linear-gradient(90deg,transparent,var(--gold-deep),transparent);opacity:.7}.status-line{display:flex;align-items:center;gap:8px;font-size:.86rem;color:var(--muted);min-height:1.4em;line-height:1.35;padding:9px 12px;background:linear-gradient(180deg,#ffffff0a,#ffffff03);border:1px solid var(--line);border-radius:10px;box-shadow:inset 0 1px #ffffff0a}.status-line.is-check{color:#ef9a9a;border-color:#c6282847;box-shadow:0 0 16px #c628281f}.status-line.is-end{color:var(--gold-bright);border-color:#d4af5a4d;text-shadow:0 0 14px rgba(212,175,90,.4)}.turn-dot{width:9px;height:9px;border-radius:50%;flex-shrink:0;background:var(--red);box-shadow:0 0 10px #c62828a6}.turn-dot.black{background:#252525;box-shadow:inset 0 0 0 1px #ffffff38,0 0 8px #00000080}.panel-block{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:8px;box-shadow:inset 0 1px #ffffff08}.game-options{display:grid;gap:14px;padding:12px}.control-group{min-width:0}.control-label{display:block;margin:0 0 7px 4px;color:var(--faint);font-size:.72rem;letter-spacing:.08em}.chip-row{display:flex;gap:4px;background:var(--panel-2);border-radius:999px;padding:3px;border:1px solid rgba(255,255,255,.04)}.chip{flex:1;border:none;border-radius:999px;background:transparent;color:var(--muted);font-family:var(--font-ui);font-size:.78rem;font-weight:500;padding:6px 0;cursor:pointer;transition:background .15s,color .15s,box-shadow .15s}.chip:hover{color:var(--text)}.diff-btn.active{background:var(--gold-soft);color:var(--gold-bright);box-shadow:0 0 14px #d4af5a26}.side-btn.active[data-side=red]{background:var(--red-soft);color:#ef9a9a;box-shadow:0 0 12px #c628282e}.side-btn.active[data-side=black]{background:#ffffff17;color:#f0f0f0}.hint-move{font-family:var(--font-display);font-size:1.05rem;font-weight:700;letter-spacing:.08em;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;background:linear-gradient(180deg,var(--gold-bright),var(--gold-deep));-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 10px rgba(212,175,90,.2));padding:10px 12px;border:1px solid var(--panel-edge);border-radius:10px;text-align:center}.hint-move.is-idle{background:none;-webkit-background-clip:unset;background-clip:unset;color:var(--faint);font-weight:500;font-family:var(--font-ui);font-size:.78rem;letter-spacing:.04em;filter:none}.actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.action-btn{min-width:44px;min-height:48px;padding:8px 12px;border:1px solid var(--panel-edge);border-radius:10px;background:var(--panel);color:var(--text);font:500 .85rem var(--font-ui);cursor:pointer;white-space:nowrap;transition:border-color .15s,background .15s}.action-btn:hover{border-color:var(--gold-deep);background:var(--gold-soft)}.action-btn:disabled{opacity:.35;cursor:default}.action-btn[aria-pressed=true]{color:var(--gold-bright);border-color:var(--gold-deep)}.settings-dot{margin-left:5px;color:var(--gold-bright);font-size:.65rem}.link-btn{border:none;background:none;padding:2px 0;font-family:var(--font-ui);font-size:.78rem;color:var(--muted);cursor:pointer;transition:color .15s}.link-btn:hover{color:var(--gold-bright)}.link-btn.is-muted{color:var(--faint)}.link-btn:disabled{opacity:.35;cursor:not-allowed}.captured{font-family:var(--font-display);font-size:.98rem;line-height:1.55;min-height:1.45em;color:var(--muted);letter-spacing:.1em;padding:0 2px}.captured .c-red{color:#e53935;text-shadow:0 0 10px rgba(198,40,40,.3)}.captured .c-black{color:#a0a0a0}.captured .sep{color:var(--faint);margin:0 6px;font-family:var(--font-ui);font-size:.7rem}@media(prefers-reduced-motion:reduce){.end-seal,.check-flash,.check-flash-char{animation:none}.check-flash{opacity:.9}.action-btn{transition:none}}:root{--board-w: min(640px, calc((100dvh - 64px - env(safe-area-inset-top) - env(safe-area-inset-bottom)) * 622 / 686), calc(100vw - 364px) )}.app{max-width:100%;padding:max(12px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));overflow-y:auto;overscroll-behavior:contain}.main-content{gap:24px}.sidebar{width:250px;gap:8px;overflow-y:auto}#gameCanvas{-webkit-user-select:none;-webkit-touch-callout:none}button{touch-action:manipulation}.chip,.link-btn,.primary-btn{min-width:44px;min-height:44px}.chip{padding:8px}button:focus-visible{outline:2px solid var(--gold-bright);outline-offset:3px}#offlineStatus{width:100%;line-height:1.6}#offlineStatus.is-ready{color:#adc79d}[hidden]{display:none!important}.pwa-update{border:1px solid var(--panel-edge);border-radius:10px;padding:10px;background:var(--panel);font-size:.85rem}.pwa-update .dialog-actions{margin-top:4px}.pwa-update .primary-btn{margin-top:10px}.primary-btn{padding:8px 18px;border:1px solid var(--gold);border-radius:10px;color:#211706;background:var(--gold-bright);cursor:pointer;font:inherit}dialog{position:fixed;top:0;right:0;bottom:0;left:0;margin:auto;width:min(440px,calc(100vw - 32px));max-height:calc(100dvh - 48px);padding:24px;border:1px solid var(--panel-edge);border-radius:18px;background:var(--panel);color:var(--text);box-shadow:0 24px 80px #0009;overflow-y:auto}dialog::backdrop{background:#000a;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}dialog h2{font-family:var(--font-display);color:var(--gold-bright);font-size:1.4rem;margin-bottom:12px}dialog p{font-size:.85rem;line-height:1.7;color:var(--muted)}.dialog-actions{display:flex;justify-content:flex-end;align-items:center;gap:12px;margin-top:20px}.storage-list{margin:18px 0}.storage-list>div{display:flex;justify-content:space-between;gap:16px;padding:8px 0;border-bottom:1px solid var(--line);font-size:.85rem}.storage-list dt{color:var(--muted)}.storage-list dd{text-align:right}.install-guide{border-top:1px solid var(--line);margin-top:16px;padding-top:16px}.install-guide h3{font-size:.9rem;margin-bottom:8px}dialog .storage-note{margin-top:12px;font-size:.72rem}.setting-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.setting-row h3{font-size:.9rem;margin-bottom:4px}.setting-row p{font-size:.75rem}.setting-row .action-btn{flex-shrink:0}@media(min-width:900px)and (orientation:landscape)and (max-height:900px){.brand-plaque{padding:12px;align-items:center}.brand-art{writing-mode:horizontal-tb;flex-direction:row;height:auto;font-size:1.45rem}.brand-seal{align-self:center}.brand-sub{display:none}}@media(max-width:899px),(orientation:portrait){:root{--board-w: min( calc(100vw - 60px - env(safe-area-inset-left) - env(safe-area-inset-right)) , calc(max(300px, 100dvh - 330px - env(safe-area-inset-top) - env(safe-area-inset-bottom)) * 622 / 686), 720px)}body,.app{align-items:flex-start}.main-content{display:grid;grid-template-columns:minmax(0,1fr);gap:10px;width:min(100%,800px);max-height:none}.sidebar{display:contents}.brand{grid-row:1;grid-column:1 / -1}.brand-plaque{justify-content:center;align-items:center;padding:8px 16px;gap:20px}.brand-art{writing-mode:horizontal-tb;text-orientation:mixed;height:auto;flex-direction:row;gap:.12em;font-size:1.4rem;letter-spacing:.14em}.brand-seal{align-self:center;width:32px;height:32px}.brand-sub{display:none}.status-line{grid-row:2;grid-column:1 / -1;justify-content:center;padding:7px 12px}.board-section{grid-row:3;grid-column:1 / -1;justify-self:center;padding:8px}.game-options{grid-row:4;grid-column:1;grid-template-columns:1fr 1.35fr;gap:12px}.hint-move{grid-row:6;grid-column:1;font-size:.9rem;letter-spacing:0}.actions{grid-row:5;grid-column:1;grid-template-columns:repeat(4,minmax(0,1fr))}.captured{grid-row:7;grid-column:1;text-align:center}.captured:empty{display:none}}@media(max-width:520px){.game-options{grid-template-columns:minmax(0,1fr);gap:10px}.action-btn{padding:8px 4px;font-size:.78rem}.board-ornament{width:18px;height:18px}.brand-art{font-size:1.2rem}}