/* Interaction design follows the portfolio's original teal and paper palette. */
:root{--accent-wash:#eaf1f0;--accent-mid:#577b80;--motion:cubic-bezier(.22,1,.36,1)}
[hidden]{display:none!important}
.project-brief{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px;padding-bottom:44px;margin-bottom:48px;border-bottom:1px solid var(--line)}
.brief-label{font-size:10px!important;font-weight:650;letter-spacing:.13em;text-transform:uppercase;color:var(--blue)!important;margin:0 0 13px!important}
.brief-item>p:last-child{font-size:14px;line-height:1.65;color:var(--muted);margin:0;max-width:270px}
.contribution{display:grid;grid-template-columns:1fr 1fr;gap:45px;margin-top:40px;background:var(--soft);border-radius:20px;padding:30px 34px}
.contribution>div+div{border-left:1px solid var(--line);padding-left:36px}
.contribution .eyebrow{font-size:10px;margin-bottom:14px;color:var(--blue)}
.contribution p:not(.eyebrow){font-size:15px;line-height:1.7;color:var(--muted);margin:0}
.inside-section{background:#f0f4f3}
.photo-explorer{background:var(--paper);border:1px solid #dce5e3;border-radius:28px;overflow:hidden}
.explorer-tabs{display:flex;gap:5px;padding:18px 24px;border-bottom:1px solid #e5eae8;overflow-x:auto;scrollbar-width:thin}
.explorer-tabs button{flex-shrink:0;position:relative;padding:12px 20px;border-radius:100px;background:transparent;color:var(--muted);font-size:13px;transition:background .25s,color .25s}
.explorer-tabs button[aria-selected=true]{background:var(--blue);color:#fff}
.explorer-tabs button:hover:not([aria-selected=true]){background:var(--accent-wash);color:var(--blue)}
.explorer-scene{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);align-items:center;gap:0}
.annotated-photo{position:relative;aspect-ratio:3/4;overflow:hidden;background:#e4e8e5;height:auto}
.annotated-photo>img{width:100%;height:100%;object-fit:cover}
.annotated-photo:after{content:"";position:absolute;inset:65% 0 0;background:linear-gradient(transparent,#0007);pointer-events:none}
.photo-index{position:absolute;left:24px;bottom:22px;z-index:1;color:white;font-size:10px;text-transform:uppercase;letter-spacing:.12em}
.photo-point{position:absolute;left:var(--point-x);top:var(--point-y);transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:#fff;color:var(--blue);box-shadow:0 3px 20px #0004;z-index:2;transition:background .25s,color .25s,box-shadow .35s}
.photo-point span{font-size:12px;font-weight:650;letter-spacing:.01em}
.photo-point:before{content:"";position:absolute;inset:-7px;border:1px solid #ffffffb3;border-radius:50%;transition:transform .35s var(--motion),opacity .35s;opacity:.65}
.photo-point[aria-pressed=true]{background:var(--blue);color:#fff;box-shadow:0 0 0 4px #fff9,0 3px 22px #0005}
.photo-point[aria-pressed=true]:before{transform:scale(1.22);opacity:.9}
.explorer-aside{padding:44px clamp(28px,4vw,58px);min-width:0}
.explorer-aside>.eyebrow{font-size:10px;margin-bottom:25px;color:var(--muted)}
.point-choices{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.point-choice{display:flex;align-items:center;gap:14px;text-align:left;padding:16px 0;border-bottom:1px solid var(--line);background:none;color:var(--muted);font-size:14px;transition:color .25s}
.point-choice>span:first-child{font-size:10px;font-variant-numeric:tabular-nums;opacity:.75}
.point-choice>span:last-child{margin-left:auto;transition:transform .3s var(--motion)}
.point-choice[aria-pressed=true]{color:var(--blue);font-weight:600}
.point-choice:hover>span:last-child{transform:translate(2px,-2px)}
.point-copy{margin-top:34px;min-height:275px}
.point-copy .eyebrow{font-size:10px;color:var(--accent-mid);margin-bottom:15px}
.point-copy h3{font-size:clamp(28px,3vw,37px);line-height:1.13;margin-bottom:18px}
.point-copy p:not(.eyebrow){font-size:15px;line-height:1.75;color:var(--muted);margin:0}
.explorer-note{font-size:11px;color:var(--muted);line-height:1.65;border-top:1px solid var(--line);padding-top:18px;margin:20px 0 0}
.explorer-foot{display:flex;justify-content:space-between;gap:24px;align-items:center;padding-top:24px}
.explorer-foot>span{font-size:11px;color:var(--muted)}
.build-journey{background:#fff;border:1px solid var(--line);border-radius:26px;overflow:hidden}
.journey-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:22px 28px;gap:18px;border-bottom:1px solid var(--line)}
.journey-tabs button{display:flex;min-width:0;overflow-wrap:anywhere;align-items:center;gap:11px;padding:10px 0;background:none;color:var(--muted);text-align:left;font-size:12px;line-height:1.4;transition:color .25s}
.journey-tabs button>span{display:grid;place-items:center;flex-shrink:0;width:32px;height:32px;border:1px solid #cfdcda;border-radius:50%;font-size:10px;transition:background .25s,border-color .25s,color .25s}
.journey-tabs button[aria-selected=true]{color:var(--blue)}
.journey-tabs button[aria-selected=true]>span{background:var(--blue);border-color:var(--blue);color:#fff}
.journey-panel{display:grid;grid-template-columns:1.08fr 1fr;min-height:420px}
.journey-art{background:#f0f4f3;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;min-width:0}
.journey-art svg{display:block;width:100%;height:auto;max-height:345px;font-family:inherit}
.journey-art>span{font-size:10px;color:var(--muted);margin-top:8px;line-height:1.5;text-align:center}
.journey-copy{padding:44px 42px;align-self:center}
.journey-copy>.eyebrow{font-size:10px;color:var(--accent-mid);margin-bottom:19px}
.journey-copy h3{font-size:35px;line-height:1.15;margin-bottom:20px}
.journey-copy>p:not(.eyebrow){font-size:15px;line-height:1.75;color:var(--muted);margin-bottom:24px}
.journey-lesson{border-left:2px solid #bfd5d2;padding-left:18px}
.journey-lesson>span{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--blue)}
.journey-lesson p{font-size:13px;line-height:1.65;color:var(--muted);margin:9px 0 0}
.milestone-section{padding:0 0 85px}
.milestone{display:grid;grid-template-columns:1fr 1fr;gap:70px;padding:43px 46px;background:var(--blue);color:#fff;border-radius:26px}
.milestone .eyebrow{font-size:10px;color:#b7d2d3;display:flex;align-items:center;gap:9px;margin-bottom:19px}
.status-dot{width:6px;height:6px;border-radius:50%;background:#a7cebc;flex-shrink:0}
.milestone h2{font-size:37px;line-height:1.15}
.milestone h3{font-size:23px;line-height:1.35;font-weight:500;letter-spacing:-.02em}
.milestone p:not(.eyebrow){font-size:13px;line-height:1.7;color:#c4d8db;margin:23px 0 0}
.milestone strong{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.1em;margin-bottom:8px;color:#fff;font-weight:500}
.clips-section{background:#fff}
.clips-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:27px}
.clip-card{min-width:0}
.clip-media{position:relative;aspect-ratio:4/3;overflow:hidden;border-radius:20px;background:#122b35}
.clip-media video{display:block;width:100%;height:100%;object-fit:contain}
.clip-media:not(.started) video{opacity:.85;transition:opacity .35s}
.clip-media:hover video{opacity:1}
.clip-play{position:absolute;inset:0;background:transparent;display:grid;place-items:center;color:#fff}
.clip-play svg{width:55px;height:55px;padding:16px;border:1px solid #ffffffa6;border-radius:50%;background:#122b354d;backdrop-filter:blur(8px);transition:transform .4s var(--motion),background .3s}
.clip-play:hover svg{transform:scale(1.1);background:#122b35a6}
.clip-media.started .clip-play,.clip-media.started .clip-duration{display:none}
.clip-duration{position:absolute;bottom:16px;left:17px;color:white;font-size:10px;letter-spacing:.02em;pointer-events:none;padding:5px 9px;background:#122b35c9;border-radius:100px}
.clip-card>.eyebrow{font-size:9px;letter-spacing:.12em;color:var(--muted);margin:23px 0 12px}
.clip-card h3{font-size:25px;line-height:1.2}
.clip-card h3 a{display:flex;justify-content:space-between;align-items:baseline;gap:16px}
.clip-card h3 span{font-size:19px;transition:transform .3s var(--motion)}
.clip-card h3 a:hover span{transform:translate(3px,-3px)}
.engineering-link{display:flex;justify-content:space-between;align-items:center;gap:24px;border:1px solid #d2ddda;border-radius:19px;margin-top:48px;padding:24px 28px;transition:background .3s,border-color .3s}
.engineering-link .eyebrow{display:block;font-size:9px;margin-bottom:8px;color:var(--accent-mid)}
.engineering-link strong{font-size:20px;font-weight:500;letter-spacing:-.03em;line-height:1.4}
.engineering-link-arrow{font-size:26px;transition:transform .4s var(--motion)}
.engineering-link:hover{background:#eaf1ef;border-color:#adc6c1}
.engineering-link:hover .engineering-link-arrow{transform:translate(3px,-3px)}
.torque-section{background:#f0f4f3}
.torque-explorer{display:grid;grid-template-columns:1.15fr 1fr;background:#fff;border-radius:26px;overflow:hidden;border:1px solid #dce5e3}
.torque-visual{display:flex;flex-direction:column;justify-content:center;position:relative;padding:35px 24px 26px;background:#e8efec;min-width:0}
.example-badge{font-size:9px;text-transform:uppercase;letter-spacing:.12em;align-self:flex-start;border:1px solid #c1d1cd;border-radius:100px;padding:6px 11px;margin-left:12px;color:#47676b}
.torque-visual svg{display:block;width:100%;height:auto;font-family:inherit;margin:16px 0 0}
.torque-visual>p{font-size:11px;text-align:center;color:#47676b;margin:22px 0 0}
.torque-controls{padding:40px 42px;min-width:0}
.torque-controls>.eyebrow{font-size:10px;color:var(--muted);margin-bottom:30px}
.torque-control{margin-bottom:26px}
.torque-control label{font-size:13px;display:flex;justify-content:space-between;gap:15px;margin-bottom:16px;color:var(--muted)}
.torque-control label output{color:var(--blue);font-variant-numeric:tabular-nums;font-weight:600;white-space:nowrap}
.torque-control input{display:block;width:100%;margin:0;accent-color:var(--blue);height:25px;cursor:pointer}
.torque-control input:focus-visible{outline:2px solid var(--accent-mid);outline-offset:6px;border-radius:8px}
.torque-result{border-top:1px solid var(--line);padding-top:24px;margin-top:27px}
.torque-result>span{font-size:11px;color:var(--muted)}
.torque-result>output{display:block;font-size:55px;font-weight:500;letter-spacing:-.05em;line-height:1.15;margin-top:10px;font-variant-numeric:tabular-nums;color:var(--blue)}
.torque-result small{font-size:20px;letter-spacing:-.02em;color:var(--accent-mid)}
.torque-meter{height:4px;background:#e9efec;border-radius:4px;margin-top:18px;overflow:hidden}
.torque-meter span{display:block;height:100%;width:100%;background:var(--accent-mid);transform-origin:left;transition:transform .12s linear}
.torque-result>p{font-size:11px;color:var(--muted);margin:12px 0 0}
.model-note{font-size:11px;line-height:1.7;color:var(--muted);margin:23px 0 0}
/* Short, consistent motion. No continuous animation or automatic media playback. */
.js .reveal{transition:opacity .6s var(--motion),transform .75s var(--motion)}
.js .reveal:not(.revealed){transform:translateY(18px)}
.button,.text-link,.filter-button{transition:background-color .25s,color .25s,transform .35s var(--motion)}
.dialog[open]{animation:dialog-enter .28s var(--motion)}
.dialog[open]::backdrop{animation:backdrop-enter .25s ease}
@keyframes dialog-enter{from{opacity:0;transform:translateY(12px) scale(.985)}to{opacity:1;transform:none}}
@keyframes backdrop-enter{from{opacity:0}to{opacity:1}}
@media(max-width:1000px){
 .project-brief{grid-template-columns:1fr 1fr;gap:28px 35px}
 .explorer-aside{padding:30px}.point-copy{min-height:285px;margin-top:25px}
 .point-choice{font-size:12px}.point-copy p:not(.eyebrow){font-size:14px}
 .journey-copy{padding:30px}.journey-copy h3{font-size:30px}
 .torque-controls{padding:32px}.milestone{gap:35px}
}
@media(max-width:760px){
 .project-brief{margin-bottom:35px;padding-bottom:32px;gap:25px}
 .brief-item>p:last-child{font-size:13px}.brief-label{font-size:9px!important}
 .contribution{gap:23px;padding:25px;grid-template-columns:1fr}
 .contribution>div+div{border-left:0;border-top:1px solid var(--line);padding:22px 0 0}
 .contribution p:not(.eyebrow){font-size:14px}
 .photo-explorer{border-radius:20px}.explorer-tabs{padding:12px;gap:3px}
 .explorer-tabs button{font-size:11px;padding:10px 13px}
 .explorer-scene{grid-template-columns:minmax(0,.95fr) minmax(0,1fr);align-items:center}
 .annotated-photo{max-height:none;aspect-ratio:3/4;height:auto}
 .explorer-aside{padding:25px 22px}.explorer-aside>.eyebrow{font-size:8px;margin-bottom:18px}
 .point-choice{gap:8px;padding:13px 0}.point-choice>span:first-child{font-size:8px}
 .point-copy{min-height:300px;margin-top:22px}.point-copy h3{font-size:26px;margin-bottom:13px}
 .point-copy .eyebrow{font-size:8px;margin-bottom:11px}.point-copy p:not(.eyebrow){font-size:13px;line-height:1.7}
 .photo-index{font-size:8px;left:15px;bottom:16px}.photo-point{width:38px;height:38px}.photo-point span{font-size:10px}
 .explorer-note{font-size:10px;margin-top:16px;padding-top:15px}
 .explorer-foot{align-items:flex-start;flex-direction:column;gap:12px;padding-top:20px}
 .explorer-foot .text-link{font-size:13px}.explorer-foot>span{font-size:10px}
 .journey-tabs{grid-template-columns:1fr 1fr;padding:15px 22px;gap:5px 18px}
 .journey-tabs button{font-size:11px}.journey-tabs button>span{width:27px;height:27px}
 .journey-panel{grid-template-columns:1fr;min-height:0}.journey-art{padding:18px}.journey-art svg{max-height:280px}
 .journey-art>span{font-size:9px}.journey-copy{padding:30px}.journey-copy h3{font-size:30px}
 .milestone-section{padding-bottom:65px}.milestone{grid-template-columns:1fr;padding:30px;gap:25px;border-radius:20px}
 .milestone h2{font-size:32px}.milestone h3{font-size:22px}.milestone p:not(.eyebrow){margin-top:20px}
 .clips-grid{gap:20px;grid-template-columns:1fr 1fr}.clip-card:last-child{grid-column:1/-1;max-width:calc(50% - 10px)}
 .clip-card h3{font-size:22px}.clip-card>.eyebrow{line-height:1.6;font-size:8px}
 .clip-duration{font-size:9px;left:12px;bottom:12px}.clip-play svg{width:48px;height:48px;padding:14px}
 .engineering-link{padding:22px;margin-top:35px}.engineering-link strong{font-size:18px}
 .torque-explorer{grid-template-columns:1fr}.torque-visual{padding:25px 22px}.torque-visual svg{max-height:330px}
 .torque-controls{padding:30px}.torque-result>output{font-size:49px}
}
@media(max-width:520px){
 .explorer-scene{grid-template-columns:1fr}.annotated-photo{aspect-ratio:3/4;height:auto;max-height:none}
 .explorer-aside{padding:27px}.point-copy{min-height:300px}.point-copy h3{font-size:30px}
 .point-choice{font-size:13px}.explorer-aside>.eyebrow{font-size:9px}.point-copy p:not(.eyebrow){font-size:14px}
 .photo-point{width:44px;height:44px}.photo-point span{font-size:11px}
 .clips-grid{grid-template-columns:1fr;gap:34px}.clip-card:last-child{grid-column:auto;max-width:none}
 .clip-card>.eyebrow{font-size:9px;margin-top:19px}.clip-card h3{font-size:26px}.clip-duration{font-size:10px}
 .project-brief{gap:25px 19px}.brief-item>p:last-child{font-size:12px;line-height:1.7}
 .journey-copy{padding:28px 25px}.journey-copy>p:not(.eyebrow){font-size:14px}.journey-lesson p{font-size:12px}
 .torque-control label{font-size:12px}.torque-controls{padding:28px 25px}
}
@media(prefers-reduced-motion:reduce){
 .js .reveal{transition:none!important}.js .reveal:not(.revealed){transform:none;opacity:1}
 .dialog[open],.dialog[open]::backdrop{animation:none!important}
 .photo-point:before,.clip-play svg,.engineering-link-arrow,.point-choice>span:last-child{transition:none!important;transform:none!important}
}

/* Stack alternate views in one grid cell to keep the page still during selection. */
.photo-explorer,.build-journey{display:grid;grid-template-columns:minmax(0,1fr)}
.explorer-tabs,.journey-tabs{grid-area:1/1}
.explorer-scene,.journey-panel{grid-area:2/1}
.photo-explorer>.explorer-scene[hidden],.build-journey>.journey-panel[hidden]{display:grid!important;visibility:hidden;pointer-events:none}
.explorer-tabs button:focus-visible,.journey-tabs button:focus-visible{outline-offset:-3px}

/* Original plumbing photograph in the build history; frame the assembly and valves. */
.journey-photo img{display:block;width:100%;height:345px;object-fit:cover;object-position:50% 70%;border-radius:12px}
@media(max-width:760px){.journey-photo img{height:280px}}