:root{color-scheme:light;--accent:#24211d;--ink:#ffffff;--muted:#68635c;--line:rgba(44,37,27,.16)}*{box-sizing:border-box}body{margin:0;background:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#1d1b18}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:disabled{opacity:.45;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:5px}button{color:inherit}a{color:inherit;text-decoration:none}[hidden]{display:none!important}#stage{height:100svh;min-height:650px;position:relative;overflow:hidden;background:radial-gradient(ellipse at 65% 42%,#eee8dc 0,#faf8f3 36%,#ffffff 72%)}#camera,#scene,#landmarks,.vignette{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}#camera{object-fit:cover;opacity:0;transform:scaleX(-1)}#camera.active{opacity:1}#camera.rear{transform:none}#scene{z-index:2}.vignette{z-index:1;background:linear-gradient(180deg,rgba(255,255,255,.94),rgba(255,255,255,.12) 25%,transparent 42%,transparent 55%,rgba(255,255,255,.97))}#landmarks{z-index:3}header{position:absolute;top:0;left:0;right:0;z-index:6;padding:32px 42px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;font-size:23px;font-weight:600;letter-spacing:3px}.brand-icon{font-size:48px;font-weight:400;color:var(--accent)}.brand small{display:block;font-size:8px;letter-spacing:3px;margin-top:4px;font-weight:500;color:#625e57}.status{position:absolute;left:50%;transform:translateX(-50%);display:flex;gap:9px;align-items:center;background:#faf8f1ed;border:1px solid var(--line);padding:9px 14px;border-radius:30px;font-size:11px;letter-spacing:1px;white-space:nowrap}.status i,.gesture-badge i{height:6px;width:6px;border-radius:50%;background:#a29c90}.status i.on{background:var(--accent);box-shadow:0 0 0 3px #24211d12}.icon-button{border:1px solid var(--line);background:transparent;border-radius:50%;width:34px;height:34px}.side-label{position:absolute;right:32px;top:38%;writing-mode:vertical-rl;z-index:4;font-size:9px;letter-spacing:3px;color:#68635c}.welcome{position:absolute;z-index:4;left:10%;top:24%}.eyebrow{font-size:10px;letter-spacing:3px;color:var(--accent)}h1{font-size:clamp(48px,5vw,76px);line-height:1.28;font-weight:450;letter-spacing:-3px;margin:24px 0}h1 span{color:var(--accent)}.welcome p{font-size:14px;line-height:1.9;letter-spacing:1px;color:#5b564f;margin-bottom:30px}.primary{border:0;border-radius:5px;background:#eae3d6;color:#191714;padding:16px 23px;font-size:14px;font-weight:600;min-width:205px;display:flex;justify-content:space-between;gap:30px;align-items:center;transition:background .2s}.primary:hover{background:#ded4c2}.primary span{font-size:20px;font-weight:400}.text-button{display:block;background:transparent;border:0;padding:16px 0;font-size:12px;color:#29251f;min-width:205px;text-align:left}.text-button span{float:right}.privacy{font-size:10px;color:#69635b;letter-spacing:.6px;margin-top:16px}.privacy span{margin-right:5px}.hand-prompt{position:absolute;z-index:4;top:28%;left:50%;transform:translateX(-50%);text-align:center;width:90%;pointer-events:none}.hand-prompt svg{width:92px;height:110px;color:var(--accent);opacity:.7;margin-bottom:15px;animation:breathe 3s ease-in-out infinite}.hand-prompt h2{font-size:20px;font-weight:500;letter-spacing:2px}.hand-prompt p{font-size:12px;color:#514b43}.gesture-badge{position:absolute;z-index:5;left:50%;bottom:240px;transform:translateX(-50%);display:flex;align-items:center;gap:8px;background:#faf7efed;border:1px solid var(--line);border-radius:30px;padding:10px 16px;white-space:nowrap;font-size:12px}.gesture-badge i{background:var(--accent)}.camera-actions{position:absolute;z-index:6;right:40px;top:110px;display:flex;gap:8px}.pill{padding:9px 14px;font-size:11px;border:1px solid var(--line);background:#faf8f2f2;border-radius:30px}.notice{position:absolute;z-index:10;left:50%;top:115px;transform:translateX(-50%);width:min(90%,480px);padding:15px 20px;background:#fffaf0f7;border:1px solid #a89a81;border-radius:8px;font-size:13px;line-height:1.7;text-align:center}.preview-label{position:absolute;z-index:5;left:9%;top:34%}.preview-label>span{font-size:44px}.preview-label p{font-size:13px;color:#625b50;margin:15px 0 30px}footer{position:absolute;z-index:5;bottom:0;left:0;right:0;padding:0 42px 25px;pointer-events:none}.footer-note{font-size:9px;letter-spacing:1.6px;color:#625d55;display:flex;align-items:center;gap:9px;margin-bottom:18px}.footer-note #modeLabel{margin-left:auto;font-size:10px;letter-spacing:1px}.tiny-cross{color:var(--accent);font-size:15px}.controls{width:350px;max-width:100%;margin:0 auto;padding:17px 22px 13px;border:1px solid #dcd4c6;border-radius:12px;background:#f7f3eaf5;backdrop-filter:blur(20px);pointer-events:auto}.control-heading{display:flex;align-items:center;justify-content:space-between;font-size:12px;letter-spacing:1px}.control-heading output{font-size:21px;letter-spacing:-.5px;font-variant-numeric:tabular-nums;color:var(--accent)}output span{font-size:11px;padding-left:3px}.slider-row{display:flex;align-items:center;gap:12px;margin:10px -3px 2px}.slider-row button{width:30px;height:30px;flex-shrink:0;border:0;background:none;font-size:22px;font-weight:300}.slider-row input{width:100%;accent-color:var(--accent);height:22px;cursor:pointer}.control-foot{display:flex;align-items:center;justify-content:space-between;font-size:9px;color:#696155}.control-foot button{font-size:10px;background:transparent;border:0;color:#514a3f;padding:5px 10px}.gesture-hint{display:flex;justify-content:center;gap:24px;font-size:10px;color:#5c554b;margin-top:18px;letter-spacing:.3px}dialog{color:#1d1b18;background:#fffcf6;border:1px solid #d7cdbd;border-radius:20px;width:min(90%,460px);padding:35px;max-height:85svh}dialog::backdrop{background:#29251f66;backdrop-filter:blur(8px)}dialog h2{font-size:25px;font-weight:500;margin-top:18px}dialog ol{padding-left:23px;font-size:13px}dialog li{padding:7px 0 7px 8px}dialog li::marker{color:var(--accent);font-size:11px}dialog li p{font-size:12px;color:#5c564c;line-height:1.8;margin:6px 0}.help-note{font-size:11px;line-height:1.8;color:#665f54;border-top:1px solid var(--line);padding-top:15px}.close{position:absolute;right:20px;top:14px;border:0;background:transparent;font-size:26px;color:#413a30}@keyframes breathe{50%{transform:translateY(-8px);opacity:1}}@media(max-width:650px){#stage{min-height:600px}header{padding:21px 22px}.brand{font-size:20px;gap:8px}.brand-icon{font-size:37px}.brand small{font-size:6px;letter-spacing:2px}.status{top:90px;font-size:10px;padding:8px 12px}.welcome{left:8%;top:24%}h1{font-size:51px;margin:20px 0}.eyebrow{font-size:8px;letter-spacing:2px}.welcome p{font-size:12px;margin-bottom:25px}.side-label{right:15px;top:32%;font-size:8px}.privacy{font-size:9px}.primary{padding:14px 18px;min-width:195px}.text-button{min-width:195px}.footer-note{font-size:7px;margin-bottom:14px;letter-spacing:.8px}.footer-note #modeLabel{font-size:8px}footer{padding:0 22px max(18px,env(safe-area-inset-bottom))}.controls{width:100%;padding:13px 19px 10px}.gesture-hint{gap:14px;font-size:9px;margin-top:13px}.camera-actions{right:20px;top:140px}.hand-prompt{top:31%}.hand-prompt h2{font-size:18px}.hand-prompt p{font-size:11px}.gesture-badge{bottom:220px}.preview-label{left:8%;top:22%}.preview-label>span{font-size:30px}.preview-label p{font-size:11px;margin-bottom:18px}.preview-label .primary{font-size:12px;min-width:180px}.notice{top:137px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.dimensions{font-size:10px;color:#655d51;letter-spacing:.5px;margin-top:8px;font-variant-numeric:tabular-nums}

.calibration-copy{font-size:13px;color:#5b5449;line-height:1.9}.calibration-copy strong{color:#201c16;font-weight:500}.calibration-diagram{width:100%;height:115px;margin:10px 0}.measurement{display:flex;align-items:center;gap:12px;margin-top:10px}.measurement input{background:#ffffff;color:#1d1b18;border:1px solid #bcb09d;border-radius:6px;padding:12px;width:100%;font:inherit}.measurement span{color:#5a5145}#calibrationForm label{font-size:12px}#calibrationForm .primary{width:100%}.camera-actions{max-width:95%;flex-wrap:wrap;justify-content:flex-end}.control-heading label{font-size:11px}

/* Light surfaces remain readable over both dark and bright camera images. */
.icon-button{background:#fffdf7e6}.controls{box-shadow:0 10px 36px #4437200d}.status,.gesture-badge,.pill{color:#211e19;box-shadow:0 2px 12px #362d1b08}.hand-prompt{width:max-content;max-width:90%;padding:22px 28px;border-radius:18px;background:#fffdf5e8;border:1px solid var(--line);backdrop-filter:blur(12px)}.notice a{text-decoration:underline;text-underline-offset:3px}.calibration-diagram{background:#f5f0e6;border-radius:12px}.primary:disabled{opacity:.55}dialog{box-shadow:0 20px 80px #3f301b26}.slider-row input{accent-color:#29251f}.brand-icon{color:#28231c}

/* Bilingual project and specimen names. */
.brand{font-size:20px;letter-spacing:1px;line-height:1.5;min-width:0;max-width:calc(100% - 52px)}.brand>span:last-child{min-width:0}.brand small{font-size:10px;letter-spacing:.6px;line-height:1.5;color:#625e57;overflow-wrap:anywhere}.model-name{font-size:14px;color:#211e19;border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:12px;letter-spacing:1px}.model-name span{font-size:11px;color:#625b50;margin-left:8px;letter-spacing:.4px}.model-english{display:block;font-size:17px;color:#625b50;letter-spacing:1px;margin-top:8px}.status{top:108px}.icon-button{flex-shrink:0}@media(max-width:650px){.brand{font-size:clamp(12px,3.6vw,16px);gap:7px;letter-spacing:0}.brand small{font-size:8px;letter-spacing:0}.brand-icon{font-size:29px}.status{top:94px}.model-name{font-size:13px;padding-bottom:8px;margin-bottom:10px}}

/* Preview drags rotate from the whole surface, including decorative overlays. */
#gestureBadge{display:none!important}
html,body{overscroll-behavior:none}
#stage.preview-mode{height:100svh;min-height:0;touch-action:none;user-select:none;-webkit-user-select:none;overscroll-behavior:none}
#stage.preview-mode button,#stage.preview-mode input{touch-action:manipulation}

/* The specimen bar remains reachable at the bottom when controls are collapsed. */
.controls>button.model-name{display:flex;align-items:center;justify-content:space-between;width:100%;background:none;border:0;border-bottom:1px solid var(--line);border-radius:0;text-align:left;padding:0 0 10px;cursor:pointer;min-height:36px;font:inherit;font-size:14px;color:#211e19}.controls .specimen-title{font-size:14px;margin:0;color:#211e19}.controls .specimen-title>span{font-size:11px;margin-left:8px;color:#625b50}.controls .collapse-arrow{font-size:20px;line-height:1;margin:0;color:#625b50;transition:transform .2s}.controls.collapsed{padding-top:10px;padding-bottom:10px}.controls.collapsed>button.model-name{border-bottom:0;padding-bottom:0;margin-bottom:0}.controls.collapsed .collapse-arrow{transform:rotate(180deg)}.controls-collapsed .footer-note,.controls-collapsed .gesture-hint{display:none}.controls-collapsed{padding-bottom:max(14px,env(safe-area-inset-bottom))}@media(prefers-reduced-motion:reduce){.controls .collapse-arrow{transition:none}}