:root{--ink:#153d48;--paper:#eef5ef;--muted:#668389;--yellow:#ffe06c;--aqua:#84e1cb;--coral:#ffa18d}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif}button,input,a{-webkit-tap-highlight-color:transparent}button,a,input{touch-action:manipulation}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #e49431;outline-offset:4px}button{min-height:44px;border:0}a{color:inherit}.page{max-width:1400px;margin:auto;padding:0 44px}.masthead{height:72px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #b8c9c3;gap:16px}.back{text-decoration:none;font-size:15px;font-weight:600;display:flex;gap:12px;align-items:center}.back span{font-size:25px;font-weight:400}.info-button{background:none;padding:0 0 0 10px;white-space:nowrap;color:var(--ink);font-size:14px}.intro{display:flex;justify-content:space-between;align-items:center;padding:33px 0 29px}.eyebrow{font-size:14px;letter-spacing:.15em;margin:0 0 12px;color:#56817c}h1{font-size:58px;line-height:1.12;letter-spacing:-.06em;margin:0;font-weight:800}h1 span{color:#d6aa35}.intro-note{font-size:15px;line-height:1.8;margin:0 5px 0 30px;color:#5d7d80;border-left:1px solid #c1d1c9;padding-left:26px}.ocean-lab{border:1px solid #c8d7ce;border-radius:20px;overflow:hidden;box-shadow:0 10px 35px #1b4c3b08}.ocean{height:480px;position:relative;background:#125570;isolation:isolate}.ocean canvas{display:block;width:100%;height:100%}.ocean-top{position:absolute;top:18px;left:24px;right:22px;display:flex;align-items:center;justify-content:space-between;color:white}.live-tag{font-size:12px;letter-spacing:.18em;color:#e4fff4;display:flex;align-items:center;gap:8px}.live-tag i{width:6px;height:6px;background:#f3e589;box-shadow:0 0 10px #f3e589;border-radius:50%}.ocean-top button{min-height:38px;border:1px solid #d7f5f33d;border-radius:24px;background:#0c475a73;color:#e7fff7;font-size:12px;padding:0 17px}.journey-status{position:absolute;top:68px;left:24px;color:#ecffe7;background:#073a4d55;border:1px solid #cdf5da24;padding:9px 12px;font-size:13px;border-radius:6px;max-width:70%;pointer-events:none}.buoyancy-console{position:absolute;right:22px;bottom:20px;width:218px;padding:14px;background:#edf7e9f5;border:1px solid #ffffffba;border-radius:13px;box-shadow:0 8px 24px #00293635}.console-title{display:flex;align-items:center;justify-content:space-between;font-size:13px}.console-title>span{font-weight:700}.console-title output{font-size:11px;color:#638077}.buoyancy-buttons{display:flex;gap:7px;margin:11px 0 2px}.buoyancy-buttons button{flex:1;background:#dce7dc;border:1px solid #bdcec2;border-radius:8px;font-weight:700;color:#264f4c;min-height:48px;transition:background .15s,transform .15s}.buoyancy-buttons button span{font-size:24px;vertical-align:-2px;margin-right:2px}.buoyancy-buttons button:hover,.buoyancy-buttons button.active{background:#ffe06c;border-color:#c9aa49;box-shadow:0 2px 0 #9f82312e}.buoyancy-buttons button:active{transform:translateY(2px)}.buoyancy-grip{display:flex;gap:7px;align-items:center;font-size:17px}input[type=range]{appearance:none;background:transparent;min-width:0;cursor:ew-resize;touch-action:pan-y;width:100%;height:44px;margin:0}input[type=range]::-webkit-slider-runnable-track{height:6px;background:#9db6ad;border-radius:6px}input[type=range]::-moz-range-track{height:6px;background:#9db6ad;border-radius:6px}input[type=range]::-webkit-slider-thumb{appearance:none;width:29px;height:34px;margin-top:-14px;border:2px solid #15454c;border-radius:7px;background:repeating-linear-gradient(90deg,#f9e292 0px,#f9e292 4px,#bd9439 5px,#f9e292 6px);box-shadow:0 2px 4px #10423325}input[type=range]::-moz-range-thumb{width:27px;height:32px;border:2px solid #15454c;border-radius:7px;background:#f9e292}.neutral{display:block;min-height:30px;width:100%;background:none;color:#5b7972;text-decoration:underline;text-underline-offset:4px;font-size:11px;padding:0}.ocean-caption{position:absolute;left:24px;bottom:20px;color:#c1e3d9;font-size:10px;letter-spacing:.06em;max-width:48%}.telemetry{background:#103e4a;color:#e6f6e8;display:grid;grid-template-columns:repeat(4,1fr);padding:17px 22px;gap:20px}.telemetry>div{display:flex;align-items:baseline;justify-content:center;gap:14px;border-right:1px solid #a6c3b72b}.telemetry>div:last-child{border:0}.telemetry span{color:#9fbfb9;font-size:11px}.telemetry strong{font-size:23px;font-weight:500;font-variant-numeric:tabular-nums;white-space:nowrap}.telemetry small{font-size:11px;margin-left:5px;color:#a7c9c1}.cockpit{background:#f7f8ef;padding:26px 30px 18px}.cockpit-head{display:flex;align-items:center;justify-content:space-between;gap:20px}.cockpit .eyebrow{font-size:10px;margin:0 0 6px;letter-spacing:.17em}h2{font-size:23px;margin:0;letter-spacing:-.04em}.auto-toggle{font-size:12px;display:flex;align-items:center;gap:8px;cursor:pointer;min-height:44px;white-space:nowrap}.auto-toggle input{accent-color:#28786f;width:18px;height:18px}.cutaway{max-width:920px;margin:8px auto 0}.trim-ends{display:flex;align-items:center;justify-content:space-between;gap:10px}.trim-ends button{background:transparent;color:#35635f;font-size:12px}.trim-label{font-size:11px;color:#7f9490}.inside-hull{height:105px;display:flex;align-items:center;position:relative;padding:0 36px 0 48px;gap:30px;margin:3px 0 10px;background:linear-gradient(180deg,#faeac0e6,#fff9dfa8 50%,#e8d79dd4);border:2px solid #b8a56a;border-radius:43% 28% 28% 43% / 50% 50% 50% 50%;box-shadow:inset 0 -4px 0 #9a864c22}.inside-hull:before{content:"";position:absolute;left:9px;top:21px;width:20px;height:60px;background:#8b9e8e;border:1px solid #54766d;transform:skewY(15deg)}.weight-rail{flex:1;position:relative;background:#c2ccc2;border:1px solid #8aa69c;border-radius:10px;padding:0 22px 5px;min-width:100px}.weight-rail input{height:48px}.weight-rail input::-webkit-slider-thumb{width:50px;height:39px;margin-top:-17px;border:2px solid #315850;border-radius:5px;background:repeating-linear-gradient(90deg,#4b776a 0,#4b776a 7px,#b5d0b9 8px,#4b776a 10px);box-shadow:0 3px 0 #183e3520}.weight-rail input::-moz-range-thumb{width:48px;height:37px;background:#4b776a;border:2px solid #315850;border-radius:5px}.weight-rail input::-webkit-slider-runnable-track{background:#6c8f83;height:5px}.rail-label{display:flex;justify-content:space-between;color:#4a6d63;font-size:9px;margin-top:-5px;pointer-events:none}.oil-bladder{position:relative;width:115px;flex:0 0 115px;min-height:80px;border:0;border-radius:50%;background:none;color:#36594c;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;isolation:isolate}.oil-bladder span{position:absolute;inset:4px 11px;background:#ffdd6c;border:2px solid #b59b47;border-radius:47%;z-index:-1;transform:scale(.82);transition:transform .3s}.oil-bladder small{font-size:9px;margin-top:3px}.cockpit-bottom{display:flex;align-items:center;justify-content:space-between;gap:15px}.cockpit-bottom p{font-size:12px;color:#607c71;line-height:1.6;margin:4px 0}.utility{display:flex;gap:5px;flex-shrink:0}.utility button{font-size:11px;background:#eaf0e4;border:1px solid #cbd6c6;border-radius:6px;padding:0 12px;color:#48675b}.legend{display:flex;flex-wrap:wrap;align-items:center;gap:19px;margin:17px 0 0;font-size:10px;color:#678277}.legend>span{display:flex;align-items:center;gap:6px}.legend>span[hidden]{display:none}.legend i{width:13px;height:3px;display:inline-block}.trail-dot{background:#bd9c3f}.ghost-dot{background:#8ba6b7}.force-dot{background:#53b79d}.gravity-dot{background:#dc8b72}.legend button{background:none;color:#5b7f6e;min-height:22px;padding:0 3px}footer{display:flex;justify-content:space-between;gap:15px;font-size:11px;color:#839a8b;border-top:1px solid #ccd8cc;margin-top:29px;padding:20px 0 26px}dialog{border:1px solid #b7cab9;border-radius:16px;padding:36px;max-width:620px;width:calc(100% - 32px);max-height:85vh;background:#f5f8ee;color:var(--ink)}dialog::backdrop{background:#082c3bcc;backdrop-filter:blur(5px)}dialog h2{font-size:31px;margin:18px 0}dialog h3{font-size:15px;margin:24px 0 10px}dialog p{font-size:13px;line-height:1.9;color:#466b60}.close-info{position:absolute;right:16px;top:14px;background:none;font-size:28px;color:var(--ink);min-width:44px}.source-links{display:flex;flex-wrap:wrap;gap:15px;font-size:12px;margin:24px 0}dialog .smallprint{font-size:11px;color:#789086}
@media(max-width:800px){.page{padding:0 24px}.intro{padding:27px 0 25px}h1{font-size:48px}.ocean{height:440px}.telemetry{gap:10px;padding:16px 12px}.telemetry>div{flex-direction:column;align-items:center;gap:5px}.telemetry strong{font-size:22px}.cockpit{padding:22px 23px 17px}.cockpit-bottom{align-items:flex-start}.trim-label{font-size:10px}.inside-hull{padding-left:32px;padding-right:15px;gap:14px}.oil-bladder{width:90px;flex-basis:90px}.cockpit-bottom p{max-width:55%}}
@media(max-width:520px){.page{padding:0 16px}.masthead{height:56px;gap:5px}.back{font-size:11px;gap:6px;letter-spacing:-.02em}.back span{font-size:20px}.info-button{font-size:10px;padding-left:0}.intro{padding:23px 0 21px;align-items:flex-end}.eyebrow{font-size:11px;letter-spacing:.14em;margin-bottom:10px}h1{font-size:39px}.intro-note{display:none}.ocean-lab{border-radius:13px}.ocean{height:350px}.ocean-top{top:10px;left:14px;right:12px}.live-tag{font-size:10px}.ocean-top button{min-height:44px;padding:0 12px;font-size:11px}.journey-status{top:58px;left:14px;font-size:11px;padding:7px 8px;max-width:90%}.buoyancy-console{right:11px;bottom:13px;width:156px;padding:10px;border-radius:10px}.console-title{font-size:11px}.console-title output{font-size:9px}.buoyancy-buttons{gap:5px;margin-top:7px}.buoyancy-buttons button{font-size:12px;min-height:46px}.buoyancy-buttons button span{font-size:19px;margin:0}.buoyancy-grip{gap:5px}.neutral{min-height:44px;font-size:10px}.ocean-caption{left:13px;bottom:15px;font-size:8px;max-width:42%;line-height:1.5}.telemetry{padding:13px 8px;gap:6px}.telemetry span{font-size:9px}.telemetry strong{font-size:16px}.telemetry small{font-size:8px;margin-left:3px}.cockpit{padding:18px 13px 14px}.cockpit-head{gap:8px}.cockpit .eyebrow{font-size:9px}h2{font-size:16px}.auto-toggle{gap:4px;font-size:9px}.auto-toggle input{width:16px;height:16px}.trim-label{display:none}.trim-ends button{font-size:10px;padding:0 4px}.inside-hull{height:86px;gap:4px;padding:0 9px 0 21px}.inside-hull:before{left:6px;width:10px;height:40px}.weight-rail{padding:0 20px 5px;min-width:130px}.oil-bladder{width:74px;flex-basis:74px;font-size:9px}.oil-bladder span{inset:10px 5px}.oil-bladder small{font-size:8px}.cockpit-bottom{display:block}.cockpit-bottom p{max-width:none;min-height:38px;font-size:11px}.utility button{font-size:11px;flex:1}.utility{margin-top:5px}.legend{gap:10px;font-size:9px;line-height:1.5;margin-top:13px}footer{font-size:9px;line-height:1.6;margin-top:21px;padding:16px 0 22px}dialog{padding:28px 23px}dialog h2{font-size:27px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.oil-bladder span{transition:none}}