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#3a46500f}.stage{min-width:0;padding:28px;background:linear-gradient(145deg,#faf5ed,#edf1ed)}.stage-head{display:flex;justify-content:space-between;gap:18px;align-items:start}.stage-head h2{margin:4px 0}.condition-badge{color:var(--slate);font-weight:750;white-space:nowrap}.conditions{margin:18px 0}.conditions span{font-size:.88rem;background:#fffaf2;color:var(--slate)}.tray{position:relative;min-height:390px;margin:16px auto;border:10px solid #d8d0c3;border-radius:28px;background:linear-gradient(155deg,#f2eee6,#ddd7cc);box-shadow:inset 0 0 0 2px #fff8,0 14px 24px #33404c14;overflow:hidden}.sample-card{position:absolute;left:50%;top:50%;translate:-50% -45%;width:min(70%,420px);height:220px;border-radius:18px;display:grid;place-items:center;border:1px solid #838b85;box-shadow:0 16px 24px #3b465224;overflow:hidden}.sample-card span{position:relative;z-index:2;padding:8px 12px;border-radius:9px;background:#fffdf2d9;color:var(--ink);font-weight:800}.sample-card i{position:absolute;inset:0}.texture-paper{background:repeating-linear-gradient(5deg,#eadfc9 0 2px,#f4ead7 2px 7px)}.texture-cotton{background:repeating-linear-gradient(90deg,#d8cfbd 0 3px,#eee6d8 3px 7px)}.texture-cotton i{background:repeating-linear-gradient(0deg,transparent 0 4px,#9c8d781f 4px 5px)}.texture-plastic{background:linear-gradient(135deg,#dbe9eb99,#f9ffffc7 45%,#a9c0c588)}.texture-plastic i{border:4px solid #ffffffaa;border-radius:14px}.texture-leaf{background:linear-gradient(135deg,#73936a,#3f7453)}.texture-leaf i{clip-path:polygon(50% 2%,54% 46%,98% 50%,54% 54%,50% 98%,46% 54%,2% 50%,46% 46%);background:#d5e1c64a}.test-ring{position:absolute;left:50%;top:50%;translate:-50% -45%;width:138px;height:138px;border:2px dashed #415a7780;border-radius:50%}.dropper{position:absolute;z-index:5;left:50%;top:18px;translate:-50% 0;width:34px;height:106px;border:3px solid #415a77;border-radius:15px 15px 7px 7px;background:linear-gradient(#d9e6e8,#fff);transition:translate .25s 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0;padding-left:1.2em}.summary{padding:16px;background:#e8efe9;border-radius:14px;line-height:1.55}.summary h3{margin-top:0}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:10px;border:1px solid #c9d2cc;text-align:left;vertical-align:top}.control-panel{padding:28px;border-left:1px solid var(--line)}fieldset{border:0;padding:0;margin:0 0 20px}legend{font-weight:800;margin-bottom:10px}.choices{display:grid;gap:8px}.choices.compact{grid-template-columns:1fr 1fr}.choice{display:flex;align-items:center;gap:9px;min-height:48px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer}.choice:has(input:checked){border-color:var(--sage);box-shadow:0 0 0 2px #44755d24}.choice input{width:20px;height:20px;accent-color:var(--sage);flex:0 0 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@media(max-width:820px){.lab{--waterproof-stacked:1;grid-template-columns:1fr}.control-panel{border-left:0;border-top:1px solid var(--line)}.tray{min-height:350px}.stage-head{display:block}.condition-badge{display:inline-block;margin-top:8px}}@media(max-width:520px){.waterproof-main{padding:24px 14px 80px}.stage,.control-panel{padding:18px}.tray{min-height:300px;border-width:7px}.sample-card{width:82%;height:175px}.choices.compact{grid-template-columns:1fr}.site-nav,.site-links{max-width:100%;min-width:0}.site-links{overflow-x:auto}.tool-heading h1{font-size:2.15rem}.conditions span{font-size:.8rem}}
body.waterproof-page:not(.classroom-screen) .classroom-toolbar{color:var(--ink)!important;background:#f5efe6!important;background-image:none!important}body.waterproof-page:not(.classroom-screen) .classroom-toolbar h2{color:var(--ink)!important}body.classroom-screen.waterproof-page{background:#fff9ef!important;color:#24313d!important;font-size:118%}body.classroom-screen.waterproof-page .lab,body.classroom-screen.waterproof-page .stage,body.classroom-screen.waterproof-page .control-panel,body.classroom-screen.waterproof-page .classroom-toolbar,body.classroom-screen.waterproof-page .resource-strip{color:#24313d!important;background:#fffaf2!important;background-image:none!important;border-color:#9aa9a4!important;box-shadow:none!important}body.classroom-screen.waterproof-page .animation-note,body.classroom-screen.waterproof-page .boundary,body.classroom-screen.waterproof-page .record-progress,body.classroom-screen.waterproof-page .no-score{color:#415a77!important}body.classroom-screen.waterproof-page .primary-action{color:#fff!important;background:#44755d!important}body.classroom-screen.waterproof-page .choice,body.classroom-screen.waterproof-page .reset-button{color:#24313d!important;background:#fffdf9!important;border-color:#728a80!important}body.classroom-screen.waterproof-page .result{color:#24313d!important;background:#eef3ed!important;border-color:#44755d!important}body.waterproof-page .classroom-screen-toggle,body.waterproof-page .fullscreen-button{color:#24313d!important;background:#fffdf9!important;background-image:none!important;border-color:#728a80!important;box-shadow:0 1px 2px #24313d1f!important}body.waterproof-page .classroom-screen-toggle:hover,body.waterproof-page .fullscreen-button:hover{color:#24313d!important;background:#eef3ed!important;border-color:#44755d!important}body.waterproof-page .classroom-screen-toggle:focus-visible,body.waterproof-page .fullscreen-button:focus-visible{color:#24313d!important;background:#fffaf2!important;border-color:#415a77!important;outline:3px solid #b76638!important;outline-offset:3px}body.waterproof-page .classroom-screen-toggle:active,body.waterproof-page .fullscreen-button:active,body.waterproof-page .classroom-screen-toggle[aria-pressed="true"]{color:#24313d!important;background:#dfe9e1!important;background-image:none!important;border-color:#44755d!important}body.classroom-screen.waterproof-page .classroom-screen-toggle,body.classroom-screen.waterproof-page .fullscreen-button,body.waterproof-page .lab:fullscreen .classroom-screen-toggle,body.waterproof-page .lab:fullscreen .fullscreen-button{color:#24313d!important;background:#fffaf2!important;border-color:#728a80!important}
body.classroom-screen.waterproof-page .control-panel h2{color:#24313d!important}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}.water-drop.is-visible{opacity:.85;translate:-50% 125px;scale:1.15 .62}.dropper.is-testing{translate:-50% 12px}}