:root{--paper:#eee6d2;--ink:#344e4b;--muted:#6e7f73;--red:#a44f40;--line:#61746a36;--gold:#b68b44;font-family:'Songti SC','Noto Serif CJK SC','STSong',serif;color:var(--ink);font-synthesis:none}*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#a9c2b6}button{font:inherit;color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible{outline:2px solid var(--red);outline-offset:5px}button:disabled{cursor:default}#game,#world,#world canvas,.paper-grain{position:absolute;inset:0;width:100%;height:100%;display:block}.paper-grain{z-index:2;pointer-events:none;opacity:.075;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23000' filter='url(%23n)' opacity='.8' d='M0 0h180v180H0z'/%3E%3C/svg%3E");mix-blend-mode:multiply}.masthead{position:absolute;top:30px;left:34px;right:32px;display:flex;align-items:flex-start;justify-content:space-between;z-index:4;pointer-events:none}.masthead>*{pointer-events:auto}.brand{display:flex;gap:14px}.seal{color:var(--red);font-weight:bold;line-height:1.1;font-size:15px;border:2px solid var(--red);padding:6px 7px;transform:rotate(-4deg);height:48px}.brand h1{font-size:29px;letter-spacing:7px;font-weight:500;line-height:1.1;margin:0}.brand p{font-size:11px;letter-spacing:3px;margin:10px 0 0;color:#50695f}nav{display:flex;gap:7px}nav button{background:#eee6d2d9;border:1px solid #8b9a8152;border-radius:2px;height:37px;padding:0 12px;font-size:13px;box-shadow:0 2px 6px #37544a09}nav button:hover{background:var(--paper)}#helpBtn,#pauseBtn{width:37px;padding:0;font-size:19px}.route-card{position:absolute;right:32px;top:100px;width:255px;z-index:3;background:#eee6d2ed;padding:20px 22px 13px;box-shadow:0 5px 25px #304b4120;border:1px solid #b8bda187;border-top:3px solid #a04f3f}.eyebrow{font-family:'PingFang SC',sans-serif;font-size:10px;letter-spacing:2px;color:var(--muted);margin:0}.eyebrow>span{float:right;letter-spacing:1px}.route-line{display:flex;align-items:center;gap:11px;margin-top:19px}.envelope{font-size:29px;color:#8c9a81;line-height:1}.route-line p{font-size:11px;margin:0 0 4px;color:var(--muted)}.route-line h2{font-size:23px;font-weight:500;margin:0;letter-spacing:2px}.small-seal{color:var(--red);font-size:18px;border:1.5px solid var(--red);width:29px;height:31px;display:grid;place-items:center;transform:rotate(7deg);margin-left:auto;opacity:.8}#recipient{margin:18px 0 13px;font-size:11px;letter-spacing:1px}.route-bottom{border-top:1px solid var(--line);padding-top:12px;display:flex;justify-content:space-between;align-items:center;font-family:'PingFang SC',sans-serif;font-size:10px}.route-bottom button{border:0;background:none;font-size:10px;padding:0}.dot{display:inline-block;width:5px;height:5px;background:var(--gold);border-radius:50%;margin-right:7px}.minimap{position:absolute;bottom:170px;right:32px;width:210px;background:#e9e2cce8;border:1px solid #9aa58b78;padding:11px 12px 7px;z-index:3;transition:opacity .2s}.minimap.hidden{display:none}.map-heading{display:flex;justify-content:space-between;font-size:10px;color:#667869;letter-spacing:2px}.map-heading span:last-child{font-size:9px;letter-spacing:0}#map{display:block;width:100%;height:auto;margin:2px 0}.map-legend{display:flex;justify-content:space-between;font-size:9px;color:#778273;letter-spacing:1px}.bottom-hud{position:absolute;z-index:4;bottom:30px;left:34px;right:32px;display:flex;align-items:flex-end;justify-content:space-between;pointer-events:none}.bottom-hud button{pointer-events:auto}.speed{position:relative;width:160px}.speed>span{font-size:36px;font-weight:400;font-variant-numeric:tabular-nums}.speed small{font-size:10px;margin-left:8px}.speed i{display:block;height:2px;background:var(--ink);width:0;max-width:95px;margin:6px 0 10px;transition:width .3s}.speed p{font-size:10px;letter-spacing:3px;margin:0}.interaction{position:absolute;left:50%;transform:translateX(-50%);bottom:0;text-align:center;min-width:270px}#direction{display:flex;justify-content:center;gap:10px;align-items:center;margin:0 0 13px;font-size:12px;letter-spacing:1px}#directionArrow{display:inline-block;font-size:22px;line-height:1;transition:transform .15s}#interactBtn{height:48px;min-width:245px;border:1px solid #81907c85;background:#eee6d2ef;box-shadow:0 3px 20px #344e4b15;padding:0 18px;font-size:13px;letter-spacing:1px;border-radius:2px}#interactBtn:disabled{opacity:.6}#interactBtn.ready{background:var(--ink);color:var(--paper);border-color:var(--ink);animation:breathe 2s ease-in-out infinite}kbd{font-family:'PingFang SC',sans-serif;font-size:10px;font-weight:400;display:inline-grid;place-items:center;border:1px solid currentColor;border-radius:3px;min-width:21px;height:22px;padding:0 4px;margin-right:3px;opacity:.85}#interactBtn kbd{margin-right:13px}.controls-hint{display:flex;flex-direction:column;gap:7px;font-size:10px;color:#425f54;text-align:right}.controls-hint kbd{height:19px;min-width:19px;font-size:9px}.view-controls{display:flex;gap:10px;align-items:center;justify-content:flex-end;margin-top:3px}.view-controls button{width:25px;height:23px;background:#eee6d2a8;border:1px solid #81907c85;font-size:13px}#toast{position:absolute;z-index:5;top:105px;left:50%;transform:translate(-50%,-10px);background:#eee6d2f2;border:1px solid #9aa58b78;padding:11px 20px;font-size:12px;letter-spacing:1px;opacity:0;transition:all .3s;pointer-events:none}#toast.visible{opacity:1;transform:translate(-50%,0)}.overlay{position:absolute;inset:0;z-index:10;background:#254e4430;backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:22px}.hidden{display:none!important}.welcome,.letter-dialog{position:relative;width:450px;padding:45px 44px;background:var(--paper);border:1px solid #8c977b70;box-shadow:0 20px 80px #2045392b;background-image:linear-gradient(125deg,#f7f0dd55,transparent)}.welcome{margin-right:20%;transform:rotate(-.4deg)}.welcome:after,.letter-dialog:after{content:'';pointer-events:none;position:absolute;inset:9px;border:1px solid #9f9f7d33}.welcome h2{font-size:39px;font-weight:400;letter-spacing:5px;line-height:1.6;margin:22px 0 13px}.welcome>p:not(.eyebrow){font-size:12px;line-height:2.3;letter-spacing:1px;color:#6d7b68}.postmark{position:absolute;right:30px;top:23px;width:82px;height:82px;border:2px solid #a9554780;border-radius:50%;transform:rotate(13deg);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#a95547a6;font-size:15px;letter-spacing:2px}.postmark:after{content:'';position:absolute;inset:5px;border:1px solid #a9554770;border-radius:50%}.postmark span{font-size:8px;margin-top:5px;letter-spacing:0}.intro-controls{display:grid;grid-template-columns:1fr 1fr;gap:12px 6px;font-family:'PingFang SC',sans-serif;font-size:10px;margin:23px 0 28px;color:#71816c}.intro-controls b{font-weight:500;color:var(--ink);margin-right:5px}.primary{display:flex;justify-content:space-between;align-items:center;width:100%;background:var(--ink);color:var(--paper);border:0;padding:15px 20px;font-size:13px;letter-spacing:3px;position:relative;z-index:1}.primary:hover{background:#45645b}.welcome>small{display:block;text-align:center;font-size:9px;color:#849078;letter-spacing:1px;margin:14px 0 -9px}.letter-dialog{width:420px}.letter-dialog h2{font-size:31px;letter-spacing:4px;font-weight:400;margin:25px 0 20px}.letter-dialog>p:not(.eyebrow){font-size:14px;line-height:2.2;color:#61735f;letter-spacing:1px}.dialog-seal{position:absolute;right:35px;top:42px;width:48px;height:51px;border:2px solid var(--red);color:var(--red);font-size:30px;display:grid;place-items:center;transform:rotate(-9deg)}.stamps{display:flex;gap:15px;margin:30px 0}.stamps span{color:var(--red);border:1px solid var(--red);width:36px;height:38px;display:grid;place-items:center;font-size:23px;transform:rotate(-5deg)}.text-button{display:block;margin:18px auto 0;border:0;background:none;font-size:11px;color:#76826e;text-decoration:underline;position:relative;z-index:1}details{margin-top:24px;font-size:10px;color:#7e8977;position:relative;z-index:1}details p{line-height:1.8}details a{color:inherit}.touch-controls{display:none}.fatal{position:absolute;z-index:30;inset:0;padding:15vh 12vw;background:var(--paper);font-size:18px;line-height:2}.fatal a{color:var(--red)}@keyframes breathe{50%{box-shadow:0 0 0 5px #344e4b18}}@media(max-width:900px){.route-card{width:220px;padding:17px;right:20px}.minimap{right:20px;width:170px}.masthead{left:22px;right:20px;top:22px}.bottom-hud{left:22px;right:20px}.welcome{margin-right:12%}.controls-hint{font-size:9px}.controls-hint span{display:none}}@media(pointer:coarse),(max-width:650px){.masthead{top:max(17px,env(safe-area-inset-top));left:18px;right:18px}.brand{gap:9px}.brand h1{font-size:21px;letter-spacing:4px}.brand p{display:none}.seal{font-size:10px;padding:4px 5px;height:34px}nav{gap:5px}nav button{height:33px;padding:0 8px;font-size:12px}nav span{display:none}#helpBtn,#pauseBtn{width:31px;font-size:16px}.route-card{top:70px;left:18px;right:auto;width:196px;padding:13px 15px 9px}.route-card .eyebrow{font-size:8px}.route-line{margin-top:10px;gap:8px}.route-line h2{font-size:20px}.route-line p{font-size:10px}.envelope{font-size:23px}.small-seal{font-size:16px;width:25px;height:27px}#recipient{margin:10px 0;font-size:10px}.route-bottom{padding-top:8px;font-size:9px}.route-bottom button{font-size:9px}.minimap{right:14px;bottom:195px;width:130px;padding:8px}.map-heading{font-size:8px}.map-legend{font-size:7px}.bottom-hud{left:18px;right:18px;bottom:calc(20px + env(safe-area-inset-bottom))}.speed{position:absolute;left:0;bottom:100px}.speed>span{font-size:25px}.speed small{font-size:8px}.speed p{font-size:8px;letter-spacing:1px}.interaction{bottom:0;min-width:200px}#interactBtn{min-width:200px;height:42px;font-size:11px;padding:0 12px}#interactBtn kbd{display:none}#direction{font-size:10px;gap:5px;margin-bottom:8px;white-space:nowrap}#directionArrow{font-size:19px}.controls-hint{display:none}.touch-controls{display:flex;justify-content:space-between;position:absolute;bottom:90px;left:17px;right:17px;z-index:5;pointer-events:none}.touch-controls button{pointer-events:auto;width:52px;height:52px;border:1px solid #7c8a7470;background:#eee6d2bd;border-radius:50%;font-size:24px;touch-action:none;user-select:none;box-shadow:0 2px 10px #24473717}.touch-controls button.pressed{background:#3d5b50cf;color:var(--paper)}.steering{display:flex;gap:9px;align-items:flex-end}.throttle{display:flex;flex-direction:column;gap:8px}.throttle button{font-size:18px}.welcome{width:100%;max-width:380px;margin:0;padding:37px 29px}.welcome h2{font-size:32px;letter-spacing:4px}.welcome>p:not(.eyebrow){font-size:11px}.postmark{width:67px;height:67px;top:19px;right:22px;font-size:12px}.postmark span{font-size:6px}.welcome .eyebrow{font-size:8px;letter-spacing:1px;max-width:180px}.intro-controls{font-size:9px}.letter-dialog{padding:35px 28px}.letter-dialog>p:not(.eyebrow){font-size:12px}#toast{top:232px;max-width:calc(100% - 36px);width:max-content;font-size:10px;padding:9px 12px}.dialog-seal{right:28px;top:32px}.overlay{padding:18px}}@media(max-height:600px) and (orientation:landscape){.welcome{padding:20px 35px;width:480px}.welcome h2{font-size:27px;margin:10px 0}.welcome h2 br{display:none}.intro-controls{margin:15px 0}.route-card{top:67px}.minimap{display:none}.letter-dialog{padding:20px 30px}.letter-dialog h2{font-size:25px;margin:12px 0}.stamps{margin:15px 0}.bottom-hud{bottom:15px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.brand h1{white-space:nowrap}.brand{flex-shrink:0}nav{flex-shrink:0}nav button{white-space:nowrap}
@media(max-width:650px){#soundBtn,#helpBtn{display:none}#viewBtn,#bridgeBtn{font-size:11px;padding:0 7px}.brand h1{font-size:20px;letter-spacing:3px}.brand{gap:7px}nav{gap:4px}}

#expandMap{border:0;background:transparent;color:var(--ink);font-size:9px;padding:0;letter-spacing:0}.map-heading{gap:8px;align-items:center}.minimap.expanded{position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);width:min(750px,88vw);bottom:auto;right:auto;z-index:14;padding:22px;background:#eee6d2fa;box-shadow:0 0 0 100vmax #24463c55,0 15px 80px #24463c40;max-height:88vh;overflow:auto}.minimap.expanded .map-heading{font-size:15px;padding-bottom:12px}.minimap.expanded #expandMap{font-size:12px;border:1px solid #81907c85;padding:5px 10px}.minimap.expanded .map-legend{font-size:11px;padding-top:8px}.minimap.expanded #map{max-height:70vh;object-fit:contain}#world canvas{touch-action:none}#startBtn:disabled{cursor:wait}.view-controls{pointer-events:auto}
@media(max-width:650px){.controls-hint{display:flex;position:absolute;right:0;bottom:180px}.controls-hint .view-controls{display:flex}.minimap.expanded{width:94vw;padding:15px}.minimap.expanded .map-heading{font-size:12px}.minimap.expanded #map{max-height:62vh}.minimap.expanded .map-legend{font-size:9px}}

/* Minimal sailing UI: destination, one menu, contextual delivery only. */
.masthead{top:25px;left:28px;right:28px;align-items:center}.brand h1{font-size:20px;letter-spacing:4px}.brand p,.brand .seal,#helpBtn{display:none!important}
nav button#pauseBtn{display:block;width:36px;height:36px;font-size:18px;background:#eee6d2b0;border:0;border-radius:50%;box-shadow:none}
.route-card{top:23px;left:50%;right:auto;transform:translateX(-50%);width:auto;min-width:170px;max-width:45vw;padding:0;background:none;box-shadow:none;border:0;text-align:center;pointer-events:none}.route-card .eyebrow{font-size:9px;letter-spacing:1px;color:#405c50}.route-card .eyebrow>span{float:none;margin-left:8px}.route-line{display:block;margin-top:6px}.route-line h2{font-size:18px;letter-spacing:2px}.route-line p,.envelope,.small-seal,#recipient{display:none}.route-bottom{border:0;padding-top:5px;justify-content:center;font-size:10px}.dot{display:none}
.speed,.controls-hint,#direction{display:none!important}.bottom-hud{bottom:25px;left:25px;right:25px;justify-content:center}.interaction{bottom:24px;min-width:0}#interactBtn:disabled{display:none}#interactBtn{height:42px;min-width:195px;border:0;box-shadow:none;border-radius:24px;background:#eee6d2d0;font-size:12px}#interactBtn.ready{animation:none;background:#eee6d2ed;color:var(--ink)}.quiet-hint{margin:0;font-family:'PingFang SC',sans-serif;font-size:10px;letter-spacing:1px;color:#344e4b99;pointer-events:none}
#toast{top:auto;bottom:100px;left:50%;border:0;border-radius:20px;padding:9px 17px;max-width:85vw;text-align:center;white-space:nowrap;font-size:11px;letter-spacing:0;background:#eee6d2d9}.minimap{display:none}.minimap.expanded:not(.hidden){display:block}
.welcome{transform:none;margin:0;width:390px;padding:37px;background:#eee6d2ed;border:0;box-shadow:0 15px 70px #304b411c}.welcome:after,.letter-dialog:after,.postmark{display:none}.welcome h2{font-size:31px;letter-spacing:3px;line-height:1.5;margin:20px 0}.welcome .eyebrow{font-size:9px}.welcome>p:not(.eyebrow){font-size:11px;letter-spacing:0;line-height:2}.intro-controls{font-size:9px;gap:10px;margin:20px 0}.primary{border-radius:3px;letter-spacing:1px}.letter-dialog{border:0;box-shadow:0 12px 60px #304b4120}.settings{display:flex;flex-wrap:wrap;gap:8px;margin:23px 0}.settings button{flex:1 1 40%;background:none;border:1px solid #61746a36;padding:10px;border-radius:3px;font-size:12px}.settings span{display:inline}#pauseOverlay .letter-dialog>p:not(.eyebrow){font-size:12px;line-height:2}#pauseOverlay details{margin-top:20px}.overlay{backdrop-filter:blur(2px);background:#254e441c}
@media(max-width:650px){.masthead{left:18px;right:18px;top:18px}.brand h1{font-size:16px;letter-spacing:2px}.route-card{top:72px;max-width:80vw;min-width:160px}.route-line h2{font-size:17px}.route-card .eyebrow{font-size:8px}.route-bottom{font-size:9px}.bottom-hud{bottom:calc(20px + env(safe-area-inset-bottom))}.quiet-hint{display:none}.interaction{bottom:18px}#interactBtn kbd{display:none}.touch-controls{bottom:30px;left:18px;right:18px}.touch-controls button{width:44px;height:44px;background:#eee6d294;box-shadow:none;border:0;font-size:21px}.steering{gap:7px}.throttle{gap:7px}.throttle button{font-size:15px}.welcome{width:min(360px,100%);padding:30px}.welcome h2{font-size:28px}.settings #soundBtn{display:block!important}.settings button{font-size:11px}#toast{top:auto;bottom:155px;white-space:normal;width:max-content}.minimap.expanded{width:92vw}}

.brand h1,.route-card,.quiet-hint{text-shadow:0 1px 5px #eee6d2b0,0 0 10px #eee6d2a0}.route-card{color:#304b41}.quiet-hint{color:#344e4bcc}

@media(max-width:650px){.touch-controls{bottom:95px}}

.speed-setting{display:block;margin:4px 0 24px;font-family:'PingFang SC',sans-serif;font-size:11px;color:var(--ink)}.speed-setting>span{display:flex;justify-content:space-between}.speed-setting input{display:block;width:100%;margin:14px 0 8px;accent-color:#657c68;cursor:pointer}.speed-setting small{display:flex;justify-content:space-between;font-size:9px;color:var(--muted)}

#world canvas:focus{outline:none}

.coach-mode .steering{display:none}