:root{--city-blue:#07549a;--city-dark:#102f3b;--city-gold:#ffc928;--city-green:#36a852;--city-sky:#8ed6ff;--city-card:#fff;--city-red:#b83b4b}
*{box-sizing:border-box}
.city-page{background:#eef8fc;color:#17313b}
.city-shell{width:min(1480px,calc(100% - 32px));margin:0 auto;padding:34px 0 70px}
.city-intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,420px);gap:26px;align-items:center;margin-bottom:24px;padding:30px;border:1px solid #b9dbe9;border-radius:26px;background:linear-gradient(135deg,#fff 0%,#e7f8ff 58%,#fff7d3 100%);box-shadow:0 14px 35px rgba(16,47,59,.1)}
.city-intro h1{margin:4px 0 10px;color:var(--city-blue);font-size:clamp(2rem,4vw,3.55rem);line-height:1.05}
.city-intro p{font-size:1.08rem;line-height:1.6}
.city-eyebrow,.mission-kicker{margin:0;text-transform:uppercase;letter-spacing:.12em;font-weight:900;color:#936400;font-size:.8rem}
.guide-bubble{display:flex;align-items:center;gap:16px;padding:20px;border-radius:22px;background:#fff;border:3px solid var(--city-gold);box-shadow:0 8px 18px rgba(16,47,59,.1)}
.guide-bubble>span{font-size:3.3rem}.guide-bubble p{margin:0;font-size:1rem}
.mission-panel{display:grid;grid-template-columns:1fr auto;align-items:center;gap:24px;margin-bottom:20px;padding:21px 24px;border-radius:22px;background:linear-gradient(110deg,var(--city-dark),var(--city-blue));color:#fff;box-shadow:0 12px 28px rgba(16,47,59,.2)}
.mission-panel h2{margin:2px 0 5px;color:#fff;font-size:clamp(1.35rem,2.5vw,2rem)}.mission-panel p{margin:0}.mission-kicker{color:#ffe27c}.mission-progress{text-align:right}.stars{color:var(--city-gold);font-size:clamp(1.35rem,2.7vw,2rem);letter-spacing:.12em;margin-bottom:8px}.mission-actions{display:flex;gap:8px;justify-content:flex-end}
.builder-layout{display:grid;grid-template-columns:330px minmax(0,1fr);gap:20px;align-items:start}
.toolbox{border:1px solid #bfd6df;border-radius:24px;background:#fff;box-shadow:0 12px 28px rgba(16,47,59,.11);overflow:hidden}.toolbox-heading{padding:20px 22px;background:linear-gradient(135deg,#fff7d8,#fff)}.toolbox-heading h2{margin:0;color:var(--city-blue)}.toolbox-heading p{margin:5px 0 0;font-size:.9rem}.tool-group{padding:16px 18px;border-top:1px solid #e1edf1}.tool-group h3,.toolbox-help h3{margin:0 0 10px;color:var(--city-dark);font-size:1rem}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.tool{display:flex;min-height:88px;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:8px 4px;border:2px solid #d4e5eb;border-radius:15px;background:#f8fcfe;color:var(--city-dark);cursor:grab;transition:.18s transform,.18s border-color,.18s background}.tool:hover,.tool:focus-visible,.tool.selected{transform:translateY(-2px);border-color:var(--city-gold);background:#fff9dc;outline:none}.tool:active{cursor:grabbing}.tool span{font-size:1.8rem}.tool strong{font-size:.76rem}.tool small{font-size:.65rem;color:#4b6872}.toolbox-help{margin:0 18px 18px;padding:14px 16px;border-radius:15px;background:#e8f8ee}.toolbox-help ol{margin:0;padding-left:20px;font-size:.88rem;line-height:1.6}
.city-toolbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}.city-button{border:0;border-radius:999px;padding:10px 16px;font:inherit;font-weight:850;cursor:pointer;transition:.16s transform,.16s opacity,.16s background}.city-button:hover:not(:disabled),.city-button:focus-visible:not(:disabled){transform:translateY(-2px);outline:3px solid rgba(255,201,40,.45);outline-offset:2px}.city-button:disabled{opacity:.45;cursor:not-allowed}.city-button.primary{background:var(--city-gold);color:#132d37}.city-button.secondary{background:#fff;color:var(--city-dark)}.city-button.gold{background:var(--city-gold);color:var(--city-dark)}.city-button.small{padding:8px 13px;background:#fff;color:var(--city-dark);border:1px solid #bdd4dd}.city-button.danger:not(:disabled){color:#8e2030;border-color:#e4adb4}
.city-stage{position:relative;min-height:670px;overflow:hidden;border:6px solid #fff;border-radius:26px;background:linear-gradient(#8ed6ff 0 45%,#7ed069 45% 100%);box-shadow:0 16px 36px rgba(16,47,59,.2);isolation:isolate;transition:background .4s}.city-stage.night{background:linear-gradient(#17355f 0 45%,#41683c 45% 100%)}.city-stage.night .sun{filter:grayscale(1);font-size:0}.city-stage.night .sun:after{content:'🌙';font-size:3rem}.city-stage.night .cloud{opacity:.45}.city-stage.night .city-name{color:#ffe67e;border-color:#ffe67e;background:rgba(10,28,49,.82)}
.sky-decor{position:absolute;inset:15px 0 auto;height:120px;pointer-events:none}.sun{position:absolute;right:6%;top:0;font-size:3.2rem}.cloud{position:absolute;color:white;font-size:3.2rem;filter:drop-shadow(0 2px 1px rgba(0,0,0,.08))}.cloud-one{left:8%;top:6px}.cloud-two{left:52%;top:45px;font-size:2.4rem}.city-name{position:absolute;z-index:2;top:22px;left:50%;transform:translateX(-50%);padding:8px 19px;border:3px solid #fff;border-radius:12px;background:rgba(7,84,154,.84);color:#fff;font-weight:950;letter-spacing:.08em;white-space:nowrap}
.lots{position:absolute;z-index:4;inset:145px 26px 94px;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(3,1fr);gap:19px}.lot{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0;border:3px dashed rgba(255,255,255,.78);border-radius:18px;background:rgba(255,255,255,.19);color:#16343f;cursor:pointer;transition:.18s transform,.18s background,.18s border}.lot:empty:before{content:'+';display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.66);font-size:1.5rem;font-weight:900}.lot:hover,.lot:focus-visible,.lot.drop-ready{transform:translateY(-2px);border-color:#ffe05c;background:rgba(255,255,255,.36);outline:none}.lot.filled{border-style:solid;border-color:rgba(255,255,255,.7);background:rgba(255,255,255,.8);box-shadow:0 7px 13px rgba(16,47,59,.16)}.lot.selected{border-color:var(--city-gold);box-shadow:0 0 0 5px rgba(255,201,40,.35)}.lot.source{background:rgba(255,249,198,.93)}.lot.powered{background:#fff8b8;box-shadow:0 0 25px rgba(255,225,67,.9)}.lot.powered:after{content:'⚡';position:absolute;right:5px;top:4px}.lot-icon{font-size:clamp(2rem,4vw,3.25rem);line-height:1}.lot-label{margin-top:4px;font-size:clamp(.68rem,1.3vw,.88rem);font-weight:900}.capacity{font-size:.68rem;color:#48616a}.wire-layer{position:absolute;z-index:3;inset:0;width:100%;height:100%;pointer-events:none}.wire{stroke:#344a52;stroke-width:6;stroke-linecap:round;fill:none}.wire-glow{stroke:#ffe236;stroke-width:3;stroke-linecap:round;fill:none;stroke-dasharray:9 7;animation:flow 1s linear infinite}@keyframes flow{to{stroke-dashoffset:-32px}}.road{position:absolute;z-index:1;left:0;right:0;bottom:20px;height:57px;background:#46565d;border-top:5px solid #d4dde0;border-bottom:5px solid #d4dde0;display:flex;align-items:center;justify-content:space-around}.road span{width:9%;height:6px;background:#fff7b0;border-radius:6px}
.status-card{display:flex;align-items:center;gap:14px;margin-top:12px;padding:14px 18px;border:1px solid #c8dde5;border-radius:17px;background:#fff;box-shadow:0 7px 18px rgba(16,47,59,.08)}.status-card>span{font-size:2rem}.status-card p{margin:0}.status-card.good{border-color:#8fd2a0;background:#effcf2}.status-card.warn{border-color:#efc36c;background:#fff9e9}
.achievement-panel{display:grid;grid-template-columns:auto 1fr auto;gap:20px;align-items:center;margin-top:26px;padding:26px;border-radius:24px;background:linear-gradient(135deg,#fff5b8,#fff,#dff8e6);border:3px solid var(--city-gold);box-shadow:0 15px 35px rgba(16,47,59,.13)}.achievement-panel[hidden]{display:none}.achievement-badge{font-size:4rem}.achievement-panel h2{margin:2px 0;color:var(--city-blue)}.achievement-panel p{margin:0}.safety-note{display:flex;gap:18px;align-items:center;margin-top:24px;padding:22px 25px;border-radius:20px;background:#e4f3fa;border-left:8px solid var(--city-blue)}.safety-note>span{font-size:2.5rem}.safety-note h2{margin:0 0 4px;color:var(--city-dark);font-size:1.2rem}.safety-note p{margin:0;line-height:1.55}
.confetti{position:absolute;z-index:20;inset:0;pointer-events:none;overflow:hidden}.confetti-piece{position:absolute;top:-20px;width:10px;height:18px;border-radius:3px;animation:fall 2.4s ease-in forwards}@keyframes fall{to{transform:translateY(760px) rotate(720deg)}}
@media(max-width:1050px){.builder-layout{grid-template-columns:1fr}.toolbox{order:2}.city-stage-wrap{order:1}.tool-grid{grid-template-columns:repeat(6,1fr)}.toolbox-help{display:none}}
@media(max-width:760px){.city-shell{width:min(100% - 18px,1480px);padding-top:18px}.city-intro{grid-template-columns:1fr;padding:21px}.guide-bubble{padding:14px}.mission-panel{grid-template-columns:1fr;padding:18px}.mission-progress{text-align:left}.mission-actions{justify-content:flex-start}.city-stage{min-height:690px}.lots{inset:125px 10px 86px;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(4,1fr);gap:9px}.tool-grid{grid-template-columns:repeat(3,1fr)}.tool{min-height:80px}.achievement-panel{grid-template-columns:1fr;text-align:center}.safety-note{align-items:flex-start}.city-toolbar{justify-content:center}.lot-icon{font-size:2rem}.lot-label{font-size:.66rem}}
@media print{.site-header,.top-nav,.mission-panel,.toolbox,.city-toolbar,.status-card,.safety-note,.site-footer{display:none!important}.city-shell{width:100%;padding:0}.city-intro{box-shadow:none}.city-stage{min-height:650px;box-shadow:none}.achievement-panel{display:grid!important;break-inside:avoid}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* Child-friendly instructions and first-visit walkthrough */
.guide-bubble>div{min-width:0}.guide-bubble>div p{margin:0 0 10px}.how-to-button{padding:9px 14px;font-size:.88rem}
.quick-start{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:24px;margin-bottom:20px;padding:19px 22px;border:2px solid #b9dce9;border-radius:22px;background:#fff;box-shadow:0 9px 24px rgba(16,47,59,.08)}
.quick-start-heading{display:flex;align-items:center;gap:12px;padding-right:22px;border-right:1px solid #d8e7ed}.quick-start-heading>span{font-size:2.4rem}.quick-start h2{margin:2px 0;color:var(--city-blue);white-space:nowrap}
.quick-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:0;padding:0;list-style:none}.quick-steps li{display:grid;grid-template-columns:34px 1fr;align-items:center;column-gap:8px;padding:9px 10px;border-radius:14px;background:#eff8fc}.quick-steps li>span{grid-row:1/3;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--city-gold);color:var(--city-dark);font-weight:950}.quick-steps strong{font-size:.9rem}.quick-steps small{font-size:.72rem;line-height:1.25;color:#526c75}
.city-button.help-highlight{background:var(--city-gold);border-color:#d4a600;box-shadow:0 0 0 3px rgba(255,201,40,.22)}
.tutorial-modal{position:fixed;z-index:1000;inset:0;display:grid;place-items:center;padding:18px;background:rgba(5,24,35,.78);backdrop-filter:blur(4px)}.tutorial-modal[hidden]{display:none}.tutorial-card{position:relative;width:min(560px,96vw);padding:28px 30px;text-align:center;border:5px solid var(--city-gold);border-radius:28px;background:linear-gradient(145deg,#fff,#effaff);box-shadow:0 25px 70px rgba(0,0,0,.35)}.tutorial-close{position:absolute;right:13px;top:12px;display:grid;place-items:center;width:38px;height:38px;border:0;border-radius:50%;background:#e8f2f5;color:var(--city-dark);font-size:1.6rem;font-weight:900;cursor:pointer}.tutorial-picture{font-size:clamp(4.5rem,14vw,7.5rem);line-height:1;margin:10px 0}.tutorial-step-count{margin:0;color:#657a82;font-weight:800}.tutorial-card h2{margin:4px 0 8px;color:var(--city-blue);font-size:clamp(1.7rem,4vw,2.45rem)}.tutorial-card>p:not(.city-eyebrow):not(.tutorial-step-count){min-height:52px;margin:0 auto 16px;max-width:440px;font-size:1.05rem;line-height:1.5}.tutorial-dots{display:flex;justify-content:center;gap:7px;margin:14px 0}.tutorial-dots i{width:12px;height:12px;border-radius:50%;background:#cadae0}.tutorial-dots i.active{background:var(--city-gold);transform:scale(1.25)}.tutorial-actions{display:flex;justify-content:center;gap:10px}.tutorial-actions .secondary{background:#e6f0f4}
@media(max-width:1050px){.quick-start{grid-template-columns:1fr}.quick-start-heading{border-right:0;border-bottom:1px solid #d8e7ed;padding:0 0 12px}.quick-steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.quick-start{padding:16px}.quick-steps{grid-template-columns:1fr}.tutorial-card{padding:24px 18px}.tutorial-actions{flex-wrap:wrap}}