body{margin:0;background:#17242d;font-family:'Microsoft YaHei',sans-serif}#panel{box-sizing:border-box;color:#243342;background:#f4f1e8;padding:8px 14px;font-size:14px;position:relative;z-index:200}#panel label{display:inline-flex;align-items:center;gap:5px;margin:6px 12px 4px 0}#panel button{margin:4px;padding:5px 10px}#panel input[type=range]{width:90px}#panel small{display:block}#mount{position:relative;width:100vw;height:calc(100vh - 110px);min-height:260px}.instruction{position:absolute;top:90px;width:100%;text-align:center;font-size:30px;font-weight:600;color:#172b35;text-shadow:0 2px 5px #fff}.boat{position:absolute;top:265px;width:144px;height:144px;transform-origin:center;transition:opacity .2s}.boatwrap{position:absolute;inset:0;pointer-events:none}.marker{position:absolute;left:615px;top:414px;width:50px;height:6px;border-radius:3px;background:#fff3c7;box-shadow:0 0 0 2px #8a5a27}.help .boat:not(.leader){opacity:.18}.help .marker{height:10px;box-shadow:0 0 0 4px #805428}.answers{position:absolute;left:50%;transform:translateX(-50%);top:542px;display:flex;gap:24px}.answer{box-sizing:border-box;width:262px;height:126px;background:#fff8e9;border:2px solid #b9aa8b;border-radius:18px;box-shadow:0 4px 8px #18362c33;display:grid;place-items:center;cursor:pointer;touch-action:manipulation}.answer img{width:76px;height:76px;pointer-events:none}.answer:active{transform:translateY(2px)}.answer:focus-visible{outline:5px solid #173d62;outline-offset:4px}.answer[hidden]{display:none}.answer:disabled{cursor:default}.game-background{transition:background-size 1.5s,background-position 1.5s}.public-topbar{background:transparent}

.game-background{transition:none}

/* 用户确认的三项视觉调整：2026-09-15 */
.game-background::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(to bottom,transparent 25%,rgba(117,187,198,.12) 34%,rgba(121,192,204,.62) 44%,rgba(117,185,198,.72) 74%,rgba(122,181,187,.63) 94%,rgba(130,180,181,.3)),radial-gradient(ellipse 72% 55% at 50% 78%,rgba(129,192,204,.8) 30%,rgba(129,192,204,.4) 68%,transparent 100%)}
.boat:not(.leader){filter:saturate(.26) brightness(.93) contrast(1.08)}
.boat.leader{filter:saturate(1.5) sepia(.12) brightness(1.08) drop-shadow(0 0 1px #6b390b)}
.leader-halo{position:absolute;left:569px;top:266px;width:142px;height:142px;border:3px solid rgba(255,247,211,.95);border-radius:50%;box-sizing:border-box;background:rgba(255,240,184,.16);box-shadow:0 0 15px 5px rgba(255,247,210,.35)}

/* v0.4默认仅橙色识别，辅助时高亮 */
.instruction{top:20px}.answers{top:570px}.leader-halo,.marker{display:none}.help .leader-halo,.help .marker{display:block}