.mss-page{--mss-ink:#182f39;--mss-muted:#566b71;--mss-paper:#f5f3eb;--mss-line:#cbd0c7;--mss-brass:#a4834e;--mss-blue:#245c78;--mss-green:#2d6e5c;background:var(--mss-paper);color:var(--mss-ink);font:16px/1.65 system-ui,sans-serif}.mss-page *{box-sizing:border-box}.mss-page [hidden]{display:none!important}.mss-shell{width:min(1320px,calc(100% - 64px));margin:auto}.mss-page h1,.mss-page h2,.mss-page h3{font-family:Georgia,'Times New Roman',serif;font-weight:400;line-height:1.15;letter-spacing:-.025em}.mss-page h1{font-size:clamp(2.2rem,4.4vw,4rem);max-width:1000px;margin:.5em 0 .35em}.mss-page h2{font-size:clamp(1.8rem,2.5vw,2.6rem)}.mss-page h3{font-size:1.45rem}.mss-page a{color:inherit;text-underline-offset:4px}.mss-page button,.mss-page select,.mss-page input,.mss-page textarea{font:inherit}.mss-page button,.mss-page .mss-button{min-height:44px;padding:10px 18px;border:1px solid #526a72;border-radius:4px;background:#fffdf7;color:var(--mss-ink);font-weight:650;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.4}.mss-page button:hover,.mss-page .mss-button:hover{border-color:var(--mss-blue);background:#eaf0ec}.mss-page button:disabled{opacity:.55;cursor:default}.mss-page button.primary,.mss-page .mss-button.primary{background:var(--mss-ink);color:#fff;border-color:var(--mss-ink)}.mss-page :focus-visible{outline:3px solid #2678b1;outline-offset:4px}.mss-kicker{text-transform:uppercase;letter-spacing:.14em;font-size:.75rem;font-weight:750;color:#536d72}.mss-hero{padding:44px 0 30px}.mss-hero p:not(.mss-kicker){max-width:820px;color:var(--mss-muted);font-size:1.08rem}.mss-mode-nav{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.mss-mode-nav [aria-current=page]{background:var(--mss-ink);color:white}.mss-current{display:flex;gap:28px;align-items:center;justify-content:space-between;padding:24px 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28px}.mss-topic{padding:22px 0;border-top:1px solid var(--mss-line);min-width:0}.mss-topic h3{margin:6px 0 12px;font-size:1.4rem}.mss-topic p{color:var(--mss-muted);font-size:.95rem;margin:10px 0}.mss-topic a{font-weight:650}.mss-progress-small{font-size:.8rem;color:var(--mss-green)}.mss-future{padding:26px 0 60px;border-top:1px solid var(--mss-line)}.mss-future summary{cursor:pointer;font-weight:700;min-height:44px}.mss-future ul{columns:2;column-gap:40px}.mss-future li{break-inside:avoid;margin:12px 0}.mss-local-note{color:var(--mss-muted);font-size:.85rem;max-width:900px}.mss-footer{padding:28px 0;margin-top:45px;border-top:1px solid var(--mss-line);display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.mss-world-intro{display:flex;justify-content:space-between;gap:30px;align-items:end}.mss-world-intro h1{font-size:clamp(2.2rem,3.8vw,3.6rem)}.mss-world-frame{border:1px solid #73888a;border-radius:6px;overflow:hidden;background:#153840;position:relative}.mss-map{height:min(72vh,800px);min-height:450px;background:#193c48}.mss-map .leaflet-image-layer{max-width:none}.mss-map-tools{position:relative;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:10px 14px;background:#faf9f1;border-bottom:1px solid #adb9b5}.mss-map-tools button{min-width:44px;padding:8px 12px}.mss-map-caption{margin:12px 0 18px;font-size:.85rem;color:var(--mss-muted)}.mss-map-pin{background:none;border:0}.mss-page .mss-landmark{position:relative;display:block;padding:0;width:50px;height:50px;min-height:50px;border:2px solid #d1b37a;border-radius:50%;background:#173e46;color:#fff;font:700 18px Georgia;text-align:center;box-shadow:0 3px 12px #0008}.mss-landmark:after{content:'';position:absolute;left:19px;bottom:-8px;border:5px solid transparent;border-top-color:#d1b37a;border-bottom:0}.mss-page .mss-landmark.future{background:#4a4838;color:#fff4d5}.mss-page .mss-landmark:hover{background:#225b64}.mss-landmark span{position:absolute;top:54px;left:50%;transform:translateX(-50%);background:#f6f2e5f5;color:#16343f;padding:5px 9px;border:1px solid #7c8377;white-space:nowrap;font:600 12px/1.3 system-ui;border-radius:3px}.mss-landmark small{display:block;color:#58665e;font-size:10px;font-weight:500}.mss-place-directory{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0 22px;margin:32px 0}.mss-place-directory button{width:100%;text-align:left;display:block;border:0;border-top:1px solid var(--mss-line);border-radius:0;background:transparent;padding:18px 0;font-size:.95rem}.mss-place-directory small{display:block;color:var(--mss-muted);font-weight:400}.mss-page dialog{width:min(880px,calc(100vw - 36px));max-height:88vh;overflow:auto;padding:0;border:1px solid #6f858b;border-radius:7px;background:var(--mss-paper);color:var(--mss-ink)}.mss-page dialog::backdrop{background:#0b202ac9}.mss-dialog-bar{position:sticky;top:0;display:flex;justify-content:space-between;gap:16px;align-items:center;padding:12px 22px;background:#f9f7ee;z-index:2;border-bottom:1px solid var(--mss-line)}.mss-region-hero{height:200px;background-size:160%;background-repeat:no-repeat}.mss-dialog-content{padding:28px 32px}.mss-dialog-content h2{margin:8px 0}.mss-room-list{list-style:none;padding:0;margin:25px 0}.mss-room-list li{padding:18px 0;border-top:1px solid var(--mss-line)}.mss-room-list a{font-weight:700}.mss-room-list p{margin:6px 0;color:var(--mss-muted)}.mss-breadcrumb{font-size:.8rem;color:var(--mss-muted);padding-top:24px;display:flex;gap:10px;flex-wrap:wrap}.mss-module-nav{display:flex;gap:20px;border-top:1px solid var(--mss-line);border-bottom:1px solid var(--mss-line);padding:12px 0;flex-wrap:wrap}.mss-module-nav a{min-height:32px;display:flex;align-items:center;font-size:.9rem}.mss-module-section{padding:34px 0;border-bottom:1px solid var(--mss-line);scroll-margin-top:85px}.mss-learn-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:50px}.mss-learn-grid p{max-width:75ch}.mss-example{background:#ecebdd;border-left:3px solid var(--mss-brass);padding:24px;align-self:start}.mss-math{overflow:auto;max-width:100%}.mss-math .katex{font-size:1.1em}.mss-math.block{margin:16px 0;overflow-x:auto;overflow-y:hidden;padding:6px 0}.mss-math.block>.katex-display{margin:.4em 0}.mss-source{font-size:.8rem;color:var(--mss-muted);margin-top:26px}.mss-training-controls{display:flex;gap:16px;align-items:end;flex-wrap:wrap;margin:20px 0}.mss-training-controls label{display:grid;gap:6px;font-size:.9rem}.mss-training-shell{border:1px solid #acb9b5;background:#fffdf8;border-radius:6px;padding:28px}.mss-step-nav{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 24px}.mss-step-nav button{font-size:.8rem;min-width:44px;padding:7px 10px;background:#f5f4ec}.mss-step-nav button[aria-current=step]{border:2px solid var(--mss-blue);background:#e8f0f4}.mss-task-step h4{font-size:1.15rem;margin:20px 0 18px}.mss-field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.mss-field{display:grid;gap:8px;align-content:start;min-width:0}.mss-field>label,.mss-field>legend{font-weight:650;font-size:.95rem}.mss-field input[type=text]{width:100%;min-width:0}.mss-field[aria-invalid=true] input{border:2px solid #a15b3e}.mss-field-error{font-size:.83rem;color:#925034;min-height:1em}.mss-field-preview{font-size:.85rem;min-height:1.4rem;color:var(--mss-muted);max-width:100%;overflow:auto}.mss-choice{grid-column:1/-1;border:0;padding:0;margin:0;min-width:0}.mss-choice label{display:flex;align-items:center;gap:12px;padding:12px 14px;margin-top:8px;border:1px solid #bbc8c4;border-radius:4px;background:#fbfbf5;min-height:46px;font-weight:400;cursor:pointer}.mss-choice input{width:18px;height:18px;accent-color:var(--mss-blue);flex-shrink:0}.mss-choice .mss-math{max-width:100%;min-width:0}.mss-keys{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0}.mss-keys button{min-width:40px;padding:6px 10px;background:#f1f1e9}.mss-task-footer{display:flex;justify-content:space-between;align-items:start;gap:22px;margin-top:24px;flex-wrap:wrap}.mss-hints{display:flex;gap:8px;flex-wrap:wrap}.mss-hints button{font-size:.85rem}.mss-feedback,.mss-help-content{padding:18px 20px;margin-top:20px;border-left:3px solid var(--mss-blue);background:#eaf0f2;border-radius:3px}.mss-feedback.good{background:#e6f0e5;border-color:var(--mss-green)}.mss-feedback.try{background:#f3ede0;border-color:#aa8150}.mss-feedback:empty,.mss-help-content:empty{display:none}.mss-solution-step{padding:14px 0;border-bottom:1px solid #c9d4cc}.mss-solution-step:last-child{border:0}.mss-table-scroll{overflow:auto;margin:18px 0}.mss-table{border-collapse:collapse;width:100%;font-size:.9rem}.mss-table th,.mss-table td{padding:10px 13px;border:1px solid #b9c7c2;text-align:center;white-space:nowrap}.mss-table th{background:#edf0e8;font-weight:600}.mss-notes{padding:26px 0}.mss-notes summary{font-weight:700;cursor:pointer;min-height:44px}.mss-notes p{font-size:.9rem;color:var(--mss-muted)}.mss-save-warning{padding:16px 20px;margin:16px 0;background:#f6ead3;border-left:4px solid #9b6e33;font-size:.9rem}.mss-lab{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(250px,1fr);gap:28px;align-items:start}.mss-plot{width:100%;height:auto;display:block;border:1px solid #bbc9c4;border-radius:4px;background:#fffefa}.mss-lab-controls{display:grid;gap:18px}.mss-lab-controls label{display:grid;gap:6px;font-size:.9rem;font-weight:650}.mss-lab-controls input[type=range]{width:100%;min-height:40px;accent-color:var(--mss-blue)}.mss-lab-readout{padding:18px;background:#eaf0e9;border-left:3px solid var(--mss-green)}.mss-lab-readout p{margin:6px 0}.mss-plot-legend{display:flex;gap:18px;flex-wrap:wrap;font-size:.8rem;color:var(--mss-muted);padding:10px 0}.mss-plot-legend i{display:inline-block;width:18px;height:3px;vertical-align:middle;margin-right:6px}.mss-experiment-question{margin:20px 0;padding:16px 20px;background:#eeeadc;border-left:3px solid var(--mss-brass)}.mss-book-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:26px 0}.mss-book-summary article{border-top:2px solid #789485;padding:15px 0}.mss-book-summary strong{font:2.5rem Georgia;display:block}.mss-book-list{padding:10px 0}.mss-book-list article{padding:20px 0;border-top:1px solid var(--mss-line);display:flex;gap:25px;justify-content:space-between}.mss-book-list h3{margin:0}.mss-book-list p{margin:8px 0}.mss-backup{padding:26px;background:#e9eee3;margin:32px 0}.mss-empty{padding:25px 0}.mss-result{padding:22px;background:#e7f0e3;border:1px solid #b3c6ae;border-radius:4px}.mss-result h3{margin-top:0}.mss-tiny-q{width:54px;height:60px;object-fit:contain}.mss-region-locked{color:#705c38;font-size:.85rem}.mss-search-status{font-size:.85rem;color:var(--mss-muted)}
@media(min-width:1550px){.mss-shell{width:1400px}}@media(max-width:1000px){.mss-shell{width:calc(100% - 40px)}.mss-topic-list{grid-template-columns:repeat(2,minmax(0,1fr))}.mss-place-directory{grid-template-columns:repeat(3,minmax(0,1fr))}.mss-learn-grid{gap:28px}.mss-lab{grid-template-columns:1fr}.mss-lab-controls{grid-template-columns:repeat(2,minmax(0,1fr))}.mss-lab-readout{grid-column:1/-1}.mss-map{height:65vh;min-height:440px}.mss-landmark span{font-size:11px}}
@media(max-width:650px){.mss-shell{width:calc(100% - 32px)}.mss-hero{padding:28px 0 18px}.mss-current{display:block;padding:18px}.mss-current .mss-actions{margin-top:18px}.mss-filter,.mss-topic-group>header,.mss-topic-list,.mss-learn-grid,.mss-field-grid{grid-template-columns:1fr}.mss-topic-group>header{gap:8px}.mss-topic-group{padding-top:25px}.mss-future ul{columns:1}.mss-world-intro{display:block}.mss-map{height:58vh;min-height:420px}.mss-map-tools{gap:8px;padding:8px}.mss-map-tools button{padding:8px}.mss-landmark span{font-size:10px;padding:4px 6px;max-width:150px;white-space:normal;min-width:95px}.mss-page .mss-landmark{width:46px;height:46px;min-height:46px;font-size:16px}.mss-place-directory{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}.mss-dialog-content{padding:22px}.mss-dialog-bar{padding:10px 15px}.mss-region-hero{height:140px;background-size:180%}.mss-module-nav{gap:16px;font-size:.85rem}.mss-training-shell{padding:18px 14px}.mss-hints{width:100%}.mss-hints button{flex:1;min-width:130px}.mss-task-footer>button{width:100%}.mss-lab-controls{grid-template-columns:1fr}.mss-book-summary{gap:12px}.mss-book-summary strong{font-size:2rem}.mss-book-summary p{font-size:.8rem}.mss-book-list article{display:block}.mss-book-list .mss-actions{margin-top:12px}.mss-backup{padding:20px}.mss-example{padding:18px}.mss-math .katex{font-size:1em}}
@media(prefers-reduced-motion:reduce){.mss-page{scroll-behavior:auto}.mss-page *{animation:none!important;transition:none!important}}
.mss-page .mss-map{background:#183f4a}.mss-field-preview:empty,.mss-field-error:empty,.mss-progress-small:empty{display:none}

.mss-page .skip-link{color:#fff}