:root{color-scheme:dark;--bg:#081315;--surface:#0d1a1d;--surface-raised:#112226;--line:#223235;--text:#e2eae8;--muted:#839694;--faint:#536a69;--accent:#9be7cf;--mono:"Cascadia Code","SFMono-Regular",Consolas,monospace;--sans:"Microsoft YaHei","PingFang SC","Noto Sans SC",system-ui,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:14px;-webkit-font-smoothing:antialiased}button,input,a{-webkit-tap-highlight-color:transparent}button,a,input{touch-action:manipulation}button{font:inherit;color:inherit;cursor:pointer}button{border:0}button:disabled{opacity:.4;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,canvas:focus-visible{outline:2px solid var(--accent);outline-offset:5px}button{transition:background .2s,color .2s,border-color .2s}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}a{color:inherit;text-decoration:none}.icon-definitions{position:absolute;width:0;height:0;overflow:hidden}.site-header{height:78px;padding:0 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:600;letter-spacing:2px;white-space:nowrap}.brand-symbol{display:grid;place-items:center;color:var(--accent);width:32px;height:36px}.brand-symbol svg{width:29px;height:29px;stroke-width:1.7}.brand-divider{font-size:18px;font-weight:300;color:#445957;margin:0 16px}.brand-subtitle{font-size:14px;font-weight:400;letter-spacing:2px;color:#a5b4b2}.main-nav{height:100%;display:flex;gap:33px;align-items:stretch}.nav-link{position:relative;padding:0 3px;background:transparent;font-size:14px;color:var(--muted)}.nav-link>span{font:10px var(--mono);margin-left:7px;vertical-align:super;color:var(--faint)}.nav-link:hover{color:var(--accent)}.nav-link.active{color:var(--accent)}.nav-link.active:after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--accent)}.edition{font:10px var(--mono);letter-spacing:1.3px;color:#79908d}.edition span{margin:0 8px;color:var(--accent)}main{max-width:1800px;padding:0 40px;margin:auto}.intro{display:flex;justify-content:space-between;align-items:center;padding:34px 0 30px}.eyebrow{display:flex;align-items:center;gap:9px;font-size:12px;letter-spacing:3px;color:var(--muted)}.short-line{width:21px;height:1px;background:var(--accent)}h1{font-family:"STSong","Songti SC","Noto Serif SC","SimSun",serif;font-size:clamp(28px,2.5vw,38px);font-weight:400;letter-spacing:5px;line-height:1.3;margin:13px 0 0}h1>span{color:#8baba3}h1 .title-dot{color:var(--accent)}.intro-note{font-size:13px;line-height:2;color:#b2bfbc;letter-spacing:1px;margin:20px 1px 0 20px}.intro-note>span{color:var(--muted)}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:stretch}.simulation-column{min-width:0;display:flex;flex-direction:column}.viewport{position:relative;isolation:isolate;flex:1;min-height:470px;height:calc(100vh - 371px);max-height:760px;background:radial-gradient(ellipse at 50% 48%,#102a2d 0%,#0a191c 53%,#0a1619 85%);border:1px solid #263a3c;border-radius:6px 6px 0 0;overflow:hidden}.viewport:after{content:"";pointer-events:none;position:absolute;inset:0;z-index:1;box-shadow:inset 0 0 100px 25px #07131833}.viewport:fullscreen{height:100vh;max-height:none;border:0;border-radius:0}.viewport.immersive{position:fixed;inset:0;z-index:20;max-height:none;height:100dvh;border:0;border-radius:0}#tide-canvas{display:block;position:absolute;inset:0;width:100%;height:100%;z-index:0;touch-action:none;cursor:grab}#tide-canvas:active{cursor:grabbing}.scene-heading{position:absolute;top:26px;left:27px;z-index:2;pointer-events:none}.scene-kicker{display:flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.8px;color:#8ba8a1}.status-light{width:5px;height:5px;border-radius:100%;background:#a7e5cc;box-shadow:0 0 7px #9be7cf60}.scene-separator{color:#3d5b58;margin:0 2px}.scene-heading h2{font-family:"STSong","Songti SC","SimSun",serif;font-weight:400;font-size:26px;letter-spacing:4px;margin:17px 0 7px}.scene-heading p{font-size:12px;color:#7e9691;letter-spacing:1px;margin:0}.viewport-tools{position:absolute;top:22px;right:22px;display:flex;gap:8px;z-index:3}.icon-button{width:34px;height:34px;display:grid;place-items:center;background:#0b1a1f99;border:1px solid #294040;border-radius:5px;color:#a2b9b2}.icon-button svg{width:16px;height:16px}.icon-button:hover{background:#203b3b;color:var(--accent)}.orientation{position:absolute;top:82px;right:27px;z-index:2;display:flex;flex-direction:column;align-items:center;pointer-events:none}.compass-n{font:10px var(--mono);color:#6e9590}.compass{margin:5px 0 10px;position:relative;width:40px;height:40px;border:1px solid #34524e;border-radius:50%;transform:rotate(-29deg)}.compass:after,.compass:before{content:"";position:absolute;background:#41615a}.compass:before{width:1px;top:-3px;bottom:-3px;left:19px}.compass:after{height:1px;left:-3px;right:-3px;top:19px}.compass span{position:absolute;border-left:4px solid transparent;border-right:4px solid transparent;border-bottom:17px solid #b3cabe;left:15px;top:3px;z-index:1}.compass-label{font-size:10px;letter-spacing:1px;color:#63817b}.scene-label{position:absolute;top:59%;left:15%;font-size:11px;letter-spacing:2px;color:#c4bba7;pointer-events:none;display:flex;align-items:center;gap:8px}.scene-label span{height:1px;width:28px;background:#c4bba760}.scene-legend{position:absolute;left:27px;bottom:75px;display:flex;gap:19px;z-index:2;color:#96aaa4;font-size:11px}.scene-legend>span{display:flex;align-items:center;gap:7px}.scene-legend i{display:block;width:5px;height:5px;border-radius:50%}.legend-water{background:#64b7ae}.legend-foam{background:#defcf2}.legend-bank{background:#ad9d80}.view-switcher{position:absolute;bottom:23px;left:24px;display:flex;padding:4px;background:#081416bd;border:1px solid #2a413e;border-radius:5px;z-index:3}.view-switcher button{font-size:12px;background:none;color:#91a69e;border-radius:3px;padding:7px 16px}.view-switcher button.selected{background:#26413c;color:#bde5d5}.view-switcher button:hover{color:var(--accent)}.scene-help{position:absolute;right:25px;bottom:31px;display:flex;align-items:center;gap:7px;color:#738e86;font-size:11px;z-index:2}.scene-help svg{width:14px;height:14px}.help-divider{margin:0 8px}.scene-help button{background:none;color:#a1baae;font-size:11px;border-left:1px solid #355047;margin-left:5px;padding-left:12px}.scene-coordinates{position:absolute;bottom:76px;right:25px;font:9px var(--mono);letter-spacing:1.3px;color:#54746d;pointer-events:none}.scene-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:14px;background:#0a191c;z-index:5;color:var(--accent)}.scene-loading span{width:18px;height:18px;border:1px solid #3b5e52;border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite}.scene-loading[hidden]{display:none}.scene-loading.error{padding:35px;text-align:center;line-height:1.8;color:#e7c8ae}.scene-loading.error span{display:none}@keyframes spin{to{transform:rotate(360deg)}}
.playback{display:flex;align-items:center;gap:18px;border:1px solid var(--line);border-top:0;border-radius:0 0 6px 6px;background:#0f1d20;padding:19px 23px 16px;min-height:98px}.play-button{height:38px;width:38px;flex-shrink:0;border-radius:50%;display:grid;place-items:center;background:var(--accent);color:#16332b}.play-button:hover{background:#bef9e4}.play-button svg{height:17px;width:17px;stroke-width:2.5}.replay-button{background:transparent;color:#8ca49b;padding:4px;display:grid;place-items:center}.replay-button svg{width:17px;height:17px}.replay-button:hover{color:var(--accent)}.timeline{flex:1;min-width:0;margin:0 4px}.timeline-labels{display:flex;justify-content:space-between;align-items:center;font-size:11px;letter-spacing:.5px;color:#abc2b7}.time-display{font:11px var(--mono);color:#c5d7cf;letter-spacing:0}.time-display>span:last-child{color:#5e7d73}.timeline input{height:3px;margin:13px 0 8px;background:linear-gradient(to right,var(--accent) var(--fill,25%),#29433b var(--fill,25%))}.timeline input::-webkit-slider-thumb{width:8px;height:8px;border:0}.timeline-ticks{display:flex;justify-content:space-between;font-size:10px;color:#5d7d70}.speed-badge{font:12px var(--mono);background:#1a2c29;border:1px solid #2e463d;border-radius:4px;padding:7px 9px;margin-left:5px;color:#bbd9c9}.speed-badge:hover{border-color:var(--accent)}.metrics{display:grid;grid-template-columns:1fr 1fr 1.22fr;border:1px solid var(--line);border-radius:6px;margin-top:18px;background:#0d1b1d;padding:20px 0 16px}.metrics>div{padding:0 23px;min-width:0}.metrics>div+div{border-left:1px solid var(--line)}.metric-label{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#8aa198;gap:10px}.metric-label>span{font:9px var(--mono);letter-spacing:1.4px;color:#557567}.metrics p{display:flex;align-items:baseline;gap:7px;margin:10px 0 0}.metrics strong{font:28px var(--mono);font-weight:400;color:#d3e5db;letter-spacing:-1px}.metrics p>span{color:#7a9e8b;font:12px var(--mono)}.metrics p>.metric-aside{margin-left:auto;font-size:10px;color:#5c806d}.mini-bars{display:flex;align-items:flex-end;height:17px;gap:3px;margin-left:auto}.mini-bars b{width:3px;background:#5c9981;opacity:.7;height:5px}.mini-bars b:nth-child(2n){height:9px}.mini-bars b:nth-child(3n){height:14px}.mini-bars b:nth-child(4n){height:17px}
.control-panel{background:#0e1c1f;border:1px solid var(--line);border-radius:6px;padding:23px 22px 22px;display:flex;flex-direction:column}.panel-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}.panel-heading h2{margin:0;display:flex;gap:9px;align-items:center;font-size:15px;font-weight:500;letter-spacing:1px}.panel-heading h2 svg{width:17px;height:17px;color:#a5b6ad}.panel-heading>span{font:9px var(--mono);letter-spacing:1.8px;color:#627a72}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px}.section-heading h3{font-size:12px;color:#98aca2;font-weight:400;margin:0;letter-spacing:.5px}.section-heading>span{font:9px var(--mono);color:#617b6f}.mode-options{display:flex;flex-direction:column;gap:9px}.mode-card{display:flex;align-items:center;gap:11px;text-align:left;border:1px solid #273b35;border-radius:5px;background:#112125;padding:12px 11px;min-height:68px}.mode-card:hover{background:#172f30;border-color:#52766b}.mode-card.selected{background:#1d3431;border-color:#8bbfa7}.wave-glyph{color:#55796a;width:43px;flex-shrink:0;display:block}.wave-glyph svg{height:30px;width:43px;stroke-width:1.2}.selected .wave-glyph{color:#a3cdb6}.mode-copy{display:flex;flex-direction:column;gap:5px}.mode-copy strong{font-size:14px;letter-spacing:1px;font-weight:500;color:#b7cabc}.selected .mode-copy strong{color:#cce9d5}.mode-copy small{font-size:10px;letter-spacing:.1px;color:#708d7c;white-space:nowrap}.selected .mode-copy small{color:#93b7a0}.radio-mark{margin-left:auto;flex-shrink:0;border:1px solid #446253;height:12px;width:12px;border-radius:50%}.selected .radio-mark{border-color:#a3d6b4;box-shadow:inset 0 0 0 3px #213b30;background:#c0eacb}.parameter-section{margin-top:25px;padding-top:22px;border-top:1px solid var(--line)}.text-button{font-size:10px;color:#7d9b89;padding:0;background:none}.text-button:hover{color:var(--accent)}.range-control{margin-top:19px}.range-control label{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#a1b5a8}.range-control output{font:12px var(--mono);color:#d1e6d6}.range-control output>span{font-size:10px;color:#83a390}.range-limits{display:flex;justify-content:space-between;font-size:10px;color:#637f6f;margin-top:8px}input[type=range]{display:block;-webkit-appearance:none;appearance:none;width:100%;height:3px;margin:16px 0 0;background:linear-gradient(to right,#9dceaa var(--fill,50%),#2c4638 var(--fill,50%));border-radius:3px;cursor:pointer;accent-color:var(--accent)}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;border:2px solid #d2ead5;width:10px;height:10px;background:#a5d8af;border-radius:50%;box-shadow:0 0 0 4px #98d1aa0b}input[type=range]::-moz-range-thumb{width:8px;height:8px;border:1px solid #d2ead5;border-radius:50%;background:#a5d8af}.display-options{display:flex;flex-direction:column;gap:16px;margin-top:25px;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.display-options label{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#9ab4a3;position:relative;cursor:pointer}.toggle{position:absolute;right:0;width:31px;height:20px;opacity:0;cursor:pointer;margin:0}.switch{display:block;width:29px;height:16px;background:#30443b;border-radius:15px;position:relative;pointer-events:none;transition:background .2s}.switch:after{content:"";width:10px;height:10px;position:absolute;left:3px;top:3px;border-radius:50%;background:#8caa99;transition:transform .2s,background .2s}.toggle:checked+.switch{background:#8bbd9f}.toggle:checked+.switch:after{background:#122e20;transform:translateX(13px)}.toggle:focus-visible+.switch{outline:2px solid var(--accent);outline-offset:5px}.observation-note{margin:20px 0 21px}.note-heading{display:flex;align-items:center;gap:7px;font-size:11px;color:#a1bbaa;letter-spacing:.5px}.note-heading svg{height:13px;width:13px}.observation-note p{font-size:11px;line-height:1.9;color:#769480;margin:9px 0 0}.restart-button{display:flex;justify-content:center;align-items:center;gap:18px;width:100%;margin-top:auto;background:#a4cfb2;color:#193426;font-size:12px;letter-spacing:1px;padding:12px;border-radius:4px}.restart-button svg{width:15px;height:15px}.restart-button:hover{background:#c1e8ca}.site-footer{display:flex;justify-content:space-between;align-items:center;margin:23px 0 24px;color:#58756c;font-size:10px;letter-spacing:.6px}.site-footer>span{display:flex;align-items:center}.footer-mark{font-size:23px;line-height:1;color:#87a892;margin-right:10px}.footer-divider{margin:0 15px;color:#355549}
dialog{background:#102123;color:var(--text);border:1px solid #375348;border-radius:12px;padding:28px 32px;max-width:650px;width:calc(100% - 32px);max-height:85dvh;box-shadow:0 30px 100px #0008}dialog::backdrop{background:#031010c9;backdrop-filter:blur(8px)}.dialog-header{display:flex;align-items:center;justify-content:space-between}.dialog-header .eyebrow{font:11px var(--mono);letter-spacing:2px;color:#9bbea7}dialog h2{font-size:26px;font-weight:400;font-family:"STSong","SimSun",serif;letter-spacing:4px;margin:14px 0 24px}dialog p{font-size:14px;line-height:1.9;color:#a9bfb2}dialog h3{font-size:16px;font-weight:500;color:#cee5d4;margin-bottom:5px}.atlas-entry{border-top:1px solid #2b453a;padding:5px 0 15px}.atlas-entry button{background:transparent;padding:0;color:var(--accent);font-size:12px}.atlas-entry p{margin:8px 0 12px}.about-keys{display:grid;grid-template-columns:130px 1fr;gap:10px;font-size:13px;color:#8fad98;margin:24px 0}.about-keys dt{color:#d3e4d7}.about-keys dd{margin:0}.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,10px);padding:11px 20px;background:#c3e3cf;color:#1b3627;font-size:13px;border-radius:6px;box-shadow:0 8px 30px #0005;z-index:40;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}.toast.visible{opacity:1;transform:translate(-50%,0)}.noscript{position:fixed;inset:30% 20%;background:var(--bg);color:var(--text);padding:40px;z-index:99;text-align:center}
@media(min-width:1600px){.workspace{grid-template-columns:minmax(0,1fr) 325px;gap:26px}.control-panel{padding:27px}.mode-card{min-height:73px}.range-control{margin-top:23px}.observation-note p{font-size:12px}}
@media(max-width:1200px){.site-header{padding:0 26px}.edition{display:none}main{padding:0 26px}.main-nav{gap:26px}.workspace{gap:17px;grid-template-columns:minmax(0,1fr) 280px}.control-panel{padding:21px 18px}.intro{padding-top:28px}.intro-note{font-size:12px}.metric-label>span{display:none}.metrics>div{padding:0 17px}.metrics strong{font-size:25px}.metric-aside{display:none}.scene-help>span{display:none}.scene-help svg{display:none}.scene-coordinates{display:none}.viewport{min-height:480px}.mode-card{padding-left:9px;gap:8px}.mode-copy small{font-size:10px}.wave-glyph{width:38px}.wave-glyph svg{width:38px}}
@media(max-width:860px){.site-header{padding:0 22px;height:70px}.brand-subtitle,.brand-divider{display:none}.main-nav{gap:20px}.nav-link{font-size:12px}.nav-link>span{display:none}main{padding:0 22px}.intro{padding:26px 0}.intro-note{display:none}.eyebrow{font-size:11px}h1{font-size:30px;letter-spacing:3px}.workspace{grid-template-columns:minmax(0,1fr)}.viewport{height:57vw;min-height:410px;max-height:600px;flex:none}.control-panel{display:grid;grid-template-columns:1fr 1fr;gap:20px 28px;padding:23px}.panel-heading{grid-column:1/-1;margin:0}.control-section{margin:0;padding:0;border:0}.mode-card{min-height:65px}.mode-copy small{font-size:11px}.mode-card{gap:12px}.parameter-section .range-control{margin-top:23px}.display-options{margin:0;grid-column:1/-1;display:flex;flex-direction:row;border-bottom:0;padding:18px 0 0;gap:35px}.display-options label{gap:20px}.observation-note{margin:0}.restart-button{align-self:center;min-height:42px}.site-footer{gap:15px;font-size:9px;letter-spacing:0}.site-footer>span:last-child{font-size:9px}.footer-divider{margin:0 8px}.metrics{margin-top:14px}.metrics strong{font-size:26px}.metric-label>span{display:block}.metric-aside{display:block}}
@media(max-width:520px){.site-header{padding:0 17px;height:64px;gap:14px}.brand{font-size:17px;gap:7px}.brand-symbol{width:24px}.brand-symbol svg{width:24px;height:24px}.main-nav{gap:16px}.nav-link{font-size:11px}.nav-link:last-child{display:none}main{padding:0 14px}.intro{padding:24px 5px}.eyebrow{font-size:10px;letter-spacing:2px}h1{font-size:26px;letter-spacing:2px;margin-top:11px}.viewport{min-height:405px;height:112vw}.scene-heading{left:18px;top:21px}.scene-heading h2{font-size:24px;margin-top:14px}.scene-kicker{font-size:9px}.scene-heading p{font-size:10px}.viewport-tools{right:15px;top:17px;gap:6px}.icon-button{width:30px;height:30px}.orientation{right:20px;top:75px}.compass{width:32px;height:32px}.compass:before{left:15px}.compass:after{top:15px}.compass span{left:11px;top:2px;border-bottom-width:13px}.compass-label{display:none}.scene-label{font-size:9px;left:9%;top:58%}.scene-legend{left:19px;bottom:72px;gap:15px;font-size:10px}.view-switcher{left:16px;bottom:22px}.view-switcher button{padding:7px 13px;font-size:11px}.scene-help{right:16px}.scene-help button{border:0;padding-left:0;font-size:10px}.playback{gap:11px;padding:17px 15px 15px}.play-button{width:33px;height:33px}.replay-button{padding:2px}.speed-badge{font-size:10px;margin-left:0;padding:6px}.timeline{margin:0 1px}.timeline-labels{font-size:10px}.time-display{font-size:9px}.timeline-ticks{font-size:9px}.metrics{padding:17px 0 15px;grid-template-columns:.9fr .9fr 1.3fr}.metrics>div{padding:0 12px}.metric-label{font-size:10px;white-space:nowrap}.metric-label>span{display:none}.metrics strong{font-size:23px;letter-spacing:-1px}.metrics p{gap:4px}.metrics p>span{font-size:10px}.metrics p>.metric-aside{display:none}.mini-bars{display:none}.control-panel{grid-template-columns:1fr;gap:23px;padding:21px}.panel-heading{grid-column:1}.mode-options{flex-direction:row;gap:7px}.mode-card{flex:1;min-width:0;flex-direction:column;gap:8px;padding:12px 5px;position:relative}.mode-copy strong{font-size:12px;text-align:center}.mode-copy small{display:none}.radio-mark{display:none}.wave-glyph{width:43px}.parameter-section{padding-top:20px;border-top:1px solid var(--line)}.parameter-section .range-control{margin-top:20px}.display-options{grid-column:1;justify-content:space-between;gap:15px}.display-options label{font-size:12px;gap:16px}.observation-note p{font-size:12px;line-height:1.9}.observation-note .note-heading{font-size:12px}.restart-button{margin:0;min-height:43px;font-size:13px}.site-footer{flex-direction:column;align-items:flex-start;margin:21px 5px 25px;gap:12px}.site-footer>span:last-child{font-size:10px}.site-footer>span:first-child{font-size:11px}dialog{padding:24px}dialog h2{font-size:24px}}
/* Keep the working controls in reach; reserve small type for metadata. */
.section-heading h3,.range-control label,.range-control output,.display-options label{font-size:14px}
.mode-copy small,.scene-heading p,.range-limits,.text-button,.note-heading,.observation-note p,.scene-legend,.view-switcher button,.scene-help,.scene-help button,.timeline-labels,.time-display,.timeline-ticks,.metric-label,.restart-button{font-size:12px}
.panel-heading h2{font-size:16px}.mode-copy strong{font-size:14px}.mode-copy small{font-size:11px}
.range-control output{font-family:var(--mono)}.observation-note p{line-height:1.8}.site-footer{font-size:11px}
@media(min-width:861px){
  .site-header{height:70px}.intro{padding:24px 0 23px}.intro h1{margin-top:11px}
  .control-panel{padding:19px 20px}.panel-heading{margin-bottom:20px}.mode-card{min-height:56px;padding:9px 10px}.mode-options{gap:8px}.mode-copy{gap:4px}.section-heading{margin-bottom:11px}
  .parameter-section{margin-top:18px;padding-top:17px}.range-control{margin-top:17px}.range-control input{margin-top:12px}.range-limits{display:none}
  .display-options{margin-top:22px;padding:18px 0;flex-direction:row;justify-content:space-between;gap:12px}.display-options label{gap:8px;font-size:12px}
  .observation-note{margin:16px 0}.observation-note p{margin-top:7px;font-size:12px;line-height:1.75}.restart-button{padding:11px;font-size:13px}
  .viewport{min-height:415px}.playback{min-height:87px;padding:15px 20px}.metrics{margin-top:15px;padding:18px 0 15px}.site-footer{margin:20px 0}
}
@media(max-width:520px){.range-limits{font-size:11px}.scene-help button{font-size:11px}.scene-legend{font-size:11px}.view-switcher button{font-size:12px}.timeline-ticks{font-size:10px}.time-display{font-size:10px}.timeline-labels{font-size:11px}.metrics .metric-label{font-size:11px}}
.mode-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.mode-card{flex-direction:row;padding:11px 8px;gap:7px;min-height:56px}.mode-card .wave-glyph{width:29px}.mode-card .wave-glyph svg{width:29px;height:26px}.mode-card .mode-copy small{display:none}.mode-card .mode-copy strong{font-size:13px;letter-spacing:.5px;white-space:nowrap}.mode-card .radio-mark{width:10px;height:10px}.mode-card.selected .radio-mark{box-shadow:inset 0 0 0 2px #213b30}
@media(min-width:861px) and (max-width:1100px){.mode-card{gap:5px;padding:10px 7px}.mode-card .wave-glyph,.mode-card .wave-glyph svg{width:25px}.mode-card .radio-mark{display:none}}
@media(max-width:860px) and (min-width:521px){.mode-card{min-height:60px}}
@media(max-width:520px){.mode-options{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.mode-card{flex-direction:column;gap:6px;padding:10px 4px;min-height:70px}.mode-card .wave-glyph,.mode-card .wave-glyph svg{width:36px}.mode-card .mode-copy strong{font-size:13px}.mode-card .radio-mark{display:none}.timeline-labels{font-size:10px;letter-spacing:0}}
/* The simulator occupies the window, with no document-level scrolling. */
html,body{width:100%;height:100%;overflow:hidden;overscroll-behavior:none}
main{height:100vh;height:100dvh;width:100%;max-width:none;padding:16px;margin:0}
.workspace{height:100%;min-height:0;grid-template-columns:minmax(0,1fr) 286px;gap:16px;align-items:stretch}
.simulation-column{height:100%;min-height:0}
.viewport{flex:1 1 0;height:0;min-height:0;max-height:none}
.playback{flex:0 0 84px;min-height:84px;padding:14px 20px}
.control-panel{display:flex;flex-direction:column;min-height:0;max-height:100%;padding:21px 19px;gap:0;overflow:auto;scrollbar-width:thin;scrollbar-color:#47685b transparent}
.panel-heading{margin:0 0 25px}.mode-section .section-heading{margin-bottom:14px}
.mode-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.mode-card{min-height:61px;padding:11px 8px;flex-direction:row;gap:7px}
.mode-card .mode-copy strong{font-size:14px}.mode-card .wave-glyph,.mode-card .wave-glyph svg{width:29px}.mode-card .radio-mark{display:none}
.parameter-section{margin:25px 0 0;padding:22px 0 0;border-top:1px solid var(--line)}
.range-control{margin-top:23px}.range-control label{font-size:14px}.range-control input{margin-top:16px}.range-limits{display:none}
.display-options{display:flex;flex-direction:column;gap:20px;margin:27px 0 20px;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.display-options label{font-size:14px}.restart-button{margin-top:auto;min-height:42px;flex-shrink:0;font-size:13px}
.viewport:fullscreen,.viewport.immersive{height:100vh;height:100dvh;min-height:100dvh;max-height:none}
@media(min-width:861px) and (max-height:720px){
  main{padding:12px}.workspace{gap:12px}.control-panel{padding:18px}.panel-heading{margin-bottom:18px}.mode-card{min-height:52px}.mode-section .section-heading{margin-bottom:10px}.parameter-section{margin-top:18px;padding-top:16px}.range-control{margin-top:20px}.range-control input{margin-top:12px}.display-options{flex-direction:row;gap:10px;margin:22px 0 18px;padding:18px 0}.display-options label{font-size:12px;gap:8px}
}
@media(max-width:860px) and (orientation:portrait){
  main{padding:10px}.workspace{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr) auto;gap:10px}
  .control-panel{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px 14px;padding:14px;max-height:43dvh;align-content:start}
  .panel-heading{display:none}.mode-section{grid-column:1/-1}.mode-section .section-heading{display:none}
  .mode-options{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.mode-card{flex-direction:row;justify-content:center;min-height:42px;padding:7px 4px;gap:6px}.mode-card .wave-glyph,.mode-card .wave-glyph svg{width:27px;height:23px}.mode-card .mode-copy strong{font-size:13px}
  .parameter-section{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:0;padding:12px 0 9px;border-top:1px solid var(--line)}
  .parameter-section .section-heading{display:none}.parameter-section .range-control{margin:0}.range-control label{display:flex;flex-direction:column;align-items:flex-start;gap:6px;font-size:12px}.range-control output{font-size:13px}.range-control input{margin-top:11px}.range-limits{display:none}
  .display-options{grid-column:1;display:flex;flex-direction:row;align-items:center;gap:18px;margin:0;padding:0;border:0}.display-options label{font-size:12px;gap:9px}
  .restart-button{grid-column:2;min-height:32px;padding:7px 10px;margin:0;gap:5px;font-size:12px}.restart-button svg{display:none}
  .playback{flex-basis:70px;min-height:70px;padding:10px 14px;gap:12px}.timeline-ticks{display:none}.timeline-labels{font-size:11px}.timeline input{margin-top:11px}.time-display{font-size:10px}
  .scene-heading{top:20px;left:20px}.scene-heading h2{font-size:25px}.scene-heading p{font-size:11px}.scene-coordinates{display:none}.scene-help>span,.scene-help svg{display:none}.scene-legend{bottom:68px}.orientation{right:23px}
}
@media(max-width:520px) and (orientation:portrait){
  main{padding:7px}.workspace{gap:7px}.control-panel{padding:11px;gap:11px 8px;max-height:46dvh}.mode-card{min-height:39px;gap:5px}.mode-card .wave-glyph,.mode-card .wave-glyph svg{width:23px}.mode-card .mode-copy strong{font-size:12px}.parameter-section{gap:17px;padding-top:11px}.display-options{gap:13px}.display-options label{font-size:11px;gap:7px}.restart-button{font-size:11px;padding:7px 8px}.switch{width:27px}.toggle:checked+.switch:after{transform:translateX(11px)}
  .scene-heading{left:16px;top:18px}.scene-kicker{font-size:9px}.scene-heading h2{font-size:24px;margin-top:12px}.scene-heading p{font-size:10px}.viewport-tools{right:13px;top:14px}.orientation{top:67px;right:19px}.scene-legend{left:16px;bottom:67px;font-size:10px}.view-switcher{left:13px;bottom:19px}.view-switcher button{font-size:11px;padding:7px 13px}.scene-help{right:15px;bottom:27px}.scene-label{font-size:10px}.playback{flex-basis:64px;min-height:64px;padding:10px 12px;gap:10px}.timeline-labels{font-size:10px}.time-display{font-size:9px}
}
@media(max-height:530px) and (orientation:landscape){
  main{padding:8px}.workspace{grid-template-columns:minmax(0,1fr) 250px;gap:8px}.control-panel{display:flex;padding:12px;gap:0}.panel-heading{display:none}.mode-section .section-heading{margin-bottom:9px}.mode-card{min-height:35px;padding:5px}.mode-card .mode-copy strong{font-size:12px}.mode-options{gap:6px}.parameter-section{margin-top:12px;padding-top:10px}.parameter-section .section-heading{margin-bottom:0}.range-control{margin-top:10px}.range-control label{font-size:12px}.range-control input{margin-top:8px}.display-options{flex-direction:row;margin:14px 0 10px;padding:10px 0;gap:8px}.display-options label{font-size:11px;gap:8px}.restart-button{min-height:30px;padding:6px;font-size:12px}.playback{min-height:61px;flex-basis:61px;padding:10px 14px}.timeline-ticks{display:none}.scene-heading{top:17px;left:20px}.scene-heading h2{font-size:23px;margin-top:12px}.scene-heading p,.scene-label,.scene-legend,.orientation{display:none}.view-switcher{bottom:16px;left:17px}.scene-help{bottom:25px;right:20px}.scene-help>span,.scene-help svg{display:none}.scene-coordinates{display:none}
}
.render-section{margin:0 0 20px}.render-switcher{display:flex;background:#07171a;border:1px solid #2d443d;border-radius:5px;padding:4px;gap:4px}.render-switcher button{flex:1;min-height:34px;padding:7px;background:none;color:#94afa1;font-size:13px;border-radius:3px}.render-switcher button.selected{background:#315348;color:#d4f2de}.render-switcher button:hover{color:#c8f3db}
.compass{margin-top:17px;will-change:transform}.compass .compass-n{position:absolute;left:50%;top:-17px;font:10px var(--mono);color:#a9c7b9;transform:translateX(-50%);font-weight:500}
.realistic{background:linear-gradient(160deg,#506b70 0%,#334d53 43%,#1d363e 100%)}.realistic .scene-heading,.realistic .scene-heading h2{color:#f1f4ea}.realistic .scene-kicker,.realistic .scene-heading p,.realistic .scene-legend,.realistic .scene-help,.realistic .scene-help button,.realistic .compass-label{color:#c3d7ce}.realistic .scene-heading{text-shadow:0 2px 7px #102e3266}.realistic .compass{border-color:#a2b9ad}.realistic .compass-n{color:#e4eee5}.realistic .compass:before,.realistic .compass:after{background:#9eb6a8}.realistic .compass span{border-bottom-color:#eef6e9}.realistic .scene-coordinates{color:#88a8a0}
.control-panel{padding:18px}.panel-heading{margin-bottom:17px}.mode-card{min-height:48px}.mode-section .section-heading{margin-bottom:10px}.parameter-section{margin-top:19px;padding-top:17px}.range-control{margin-top:19px}.range-control input{margin-top:12px}.display-options{flex-direction:row;gap:12px;margin:23px 0 0;padding:17px 0}.display-options label{font-size:12px;gap:8px}.observation-note{margin:19px 0 0}.observation-note p{font-size:12px;line-height:1.8;margin:7px 0 0}.note-heading{font-size:12px}
@media(min-width:861px) and (max-height:720px){.render-section{margin-bottom:17px}.render-switcher button{min-height:30px}.mode-card{min-height:43px}.parameter-section{margin-top:15px;padding-top:14px}.range-control{margin-top:17px}.display-options{margin-top:20px;padding:15px 0}.observation-note{margin-top:15px}}
@media(max-width:860px) and (orientation:portrait){
  .control-panel{grid-template-columns:1fr;max-height:49dvh;padding:12px;gap:10px}.render-section{grid-column:1;margin:0}.render-switcher{padding:3px}.render-switcher button{min-height:29px;padding:5px;font-size:12px}.mode-section{grid-column:1}.mode-card{min-height:35px;padding:5px}.parameter-section{grid-column:1;margin:0;padding:10px 0 8px}.parameter-section .range-control{margin:0}.range-control input{margin-top:10px}.display-options{grid-column:1;justify-content:flex-start;gap:26px;margin:0;padding:0;border:0}.display-options label{font-size:12px}.observation-note{grid-column:1;margin:0;padding-top:9px;border-top:1px solid var(--line);display:flex;gap:12px;align-items:baseline}.note-heading{font-size:11px;white-space:nowrap}.note-heading svg{display:none}.observation-note p{font-size:11px;line-height:1.65;margin:0}.orientation{top:66px}.compass .compass-n{top:-15px}
}
@media(max-height:530px) and (orientation:landscape){.render-section{margin-bottom:11px}.render-switcher button{min-height:27px;padding:4px;font-size:12px}.mode-card{min-height:31px}.parameter-section{margin-top:11px;padding-top:9px}.range-control{margin-top:11px}.range-control input{margin-top:8px}.display-options{margin-top:12px;padding:10px 0}.observation-note{margin-top:10px}.observation-note p{font-size:11px}.note-heading{font-size:11px}.orientation{display:flex;top:64px;right:22px}.compass-label{display:none}}
.realistic{background:linear-gradient(180deg,#748f9b 0%,#a2b0ae 60%,#c1c6b6 100%)}
.realistic:before{content:"";position:absolute;inset:0;pointer-events:none;z-index:1;background:linear-gradient(180deg,#10282d66 0%,transparent 24%,transparent 80%,#10282d44 100%)}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}.scene-loading span{animation:none}}