/* Research introduction with static slide photographs and concept figures. */
.research2026.page-wrap{max-width:1240px}
.research2026 .page-hero{padding-bottom:30px;margin-bottom:28px}
.research-intro{display:grid;grid-template-columns:1fr 310px;gap:40px;align-items:center}
.research2026 .research-catch{font-size:32px;font-weight:700;line-height:1.65;letter-spacing:.03em;color:var(--navy);margin:4px 0 16px}
.research2026 .page-hero .lead{font-size:15px;max-width:730px}
.sound-definition{background:#e9f4f6;border-radius:12px;padding:23px;font-size:13px;line-height:1.9;color:#335665;border:1px solid #cde3e7}
.sound-definition strong{display:block;font-size:16px;color:var(--navy);margin:8px 0}
.sound-definition svg{display:block;width:80px;height:38px}
.research-facts{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.research-facts span{font-size:12px;color:var(--muted);border:1px solid var(--line);padding:4px 12px;border-radius:24px;background:#fff}
.field-overview{display:grid;grid-template-columns:.85fr 1.15fr;gap:20px;margin-bottom:26px}
.field-summary{background:#fff;border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:8px;padding:23px}
.field-summary.ultrasound{border-top-color:var(--teal)}
.field-summary .field-label{font-size:11px;letter-spacing:.1em;color:var(--blue);margin-bottom:7px;font-weight:700}
.field-summary.ultrasound .field-label{color:var(--teal)}
.field-summary h2{font-size:20px;line-height:1.6;color:var(--navy);margin-bottom:14px}
.field-summary ul{padding:0;margin:0;list-style:none}
.field-summary.ultrasound ul{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.field-summary li a{display:flex;align-items:baseline;gap:9px;text-decoration:none;font-size:13px;line-height:1.8;padding:8px 0;color:var(--ink);border-top:1px solid var(--line)}
.field-summary li a:hover{color:var(--blue);text-decoration:underline}
.field-summary li span{font-size:10px;letter-spacing:.06em;color:var(--blue);font-weight:700;flex:0 0 19px}
.research2026 .page-layout{grid-template-columns:minmax(0,1fr) 190px;gap:28px}
.research-area{margin-bottom:48px;scroll-margin-top:28px}
.area-heading{padding:0 0 21px;margin-bottom:24px;border-bottom:2px solid var(--blue)}
.area-heading .eyebrow{font-size:11px;margin-bottom:6px}
.area-heading h2{font-size:25px;line-height:1.6;color:var(--navy);margin-bottom:8px}
.area-heading p:last-child{font-size:14px;color:var(--muted);line-height:1.9}
.research-area.ultrasound .area-heading{border-color:var(--teal)}
.research-area.ultrasound .area-heading .eyebrow{color:var(--teal)}
.research-topic{padding:28px;border:1px solid var(--line);background:#fff;border-radius:9px;margin-bottom:24px;scroll-margin-top:24px}
.topic-heading{display:flex;align-items:flex-start;gap:14px;margin-bottom:15px}
.topic-index{background:#e9f3f8;color:var(--blue);border-radius:6px;font-size:16px;font-weight:700;line-height:1.2;padding:12px 10px;flex:0 0 40px;text-align:center}
.ultrasound .topic-index{color:var(--teal);background:#eaf5f2}
.topic-heading h3{font-size:23px;line-height:1.55;color:var(--navy);margin:0 0 5px;letter-spacing:.01em}
.topic-specialty{font-size:12px;line-height:1.8;color:var(--muted)}
.topic-description{font-size:14px;line-height:1.95;margin-bottom:18px}
.topic-description p+p{margin-top:10px}
.topic-method{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:0 0 18px}
.topic-method div{padding:13px 15px;background:#f3f7fa;border-radius:5px}
.topic-method dt{font-size:11px;color:var(--blue);font-weight:700;letter-spacing:.03em;margin-bottom:3px}
.topic-method dd{margin:0;font-size:13px;line-height:1.8}
.research2026 .tags{margin:0 0 18px}
.concept-figure{margin:0 0 18px}
.concept-figure img{width:100%;display:block;border:1px solid #dde9ef;border-radius:6px;background:#f4f8fa}
.concept-figure figcaption{font-size:11px;color:var(--muted);line-height:1.7;margin-top:5px}
.research-detail{margin-top:18px;padding-top:11px;border-top:1px solid var(--line)}
.research-detail summary{font-size:12px;color:var(--blue);cursor:pointer;padding:4px 0}
.research-detail p,.research-detail li{font-size:12px;line-height:1.95;color:var(--muted)}
.research-detail p{margin-top:9px}
.device-types{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:0;margin:13px 0 18px;list-style:none}
.device-types li{border:1px solid var(--line);border-radius:5px;padding:12px;font-size:12px;line-height:1.8}
.device-types strong{display:block;font-size:13px;color:var(--navy);margin-bottom:3px}
.research-remark{padding:13px 15px;border-left:3px solid var(--teal);background:#f0f7f5;margin-bottom:18px;font-size:12px;line-height:1.9;color:#3b665f}
.research2026 .toc{padding:17px 14px;top:24px}
.research2026 .toc h2{font-size:13px;margin-bottom:8px}
.research2026 .toc a{font-size:12px;padding:8px 0}
.research2026 .toc .toc-group{font-size:10px;color:var(--blue);font-weight:700;letter-spacing:.04em;margin:15px 0 3px}
.research2026 .toc .toc-group:first-of-type{margin-top:0}
.research2026 .toc .toc-extra{font-size:11px}
.research-links{padding:23px;background:#eaf3f8;border-radius:7px;margin-bottom:25px}
.research-links h2{font-size:18px;color:var(--navy);margin-bottom:7px}
.research-links p{font-size:13px;line-height:1.9}
.research-links .button-link{margin-top:14px}
.preview-banner{background:#fff8e8;border-bottom:1px solid #e9d7ab;padding:12px 24px;font-size:12px;line-height:1.9;text-align:center;color:#665022}
.home-research-grid.research-overview-grid{grid-template-columns:1fr 1fr}
.home-research-grid.research-overview-grid h3{font-size:19px}
.home-research-grid.research-overview-grid p{font-size:13px}

.topic-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start;margin-bottom:20px}
.topic-text{min-width:0}.topic-text .topic-description{margin-bottom:14px}
.research-static .topic-text .tags{margin-bottom:0}
.research-photo{margin:0;border:1px solid #dce7ed;border-radius:7px;overflow:hidden;background:#f8fbfd;min-width:0}
.photo-frame{display:flex;align-items:center;justify-content:center;background:#edf3f7;height:260px;padding:10px;min-width:0}
.photo-frame img{display:block;max-width:100%;max-height:100%;width:100%;height:100%;object-fit:contain}
.research-photo figcaption{padding:11px 13px;font-size:12px;line-height:1.8;color:#405c70;border-top:1px solid #e1eaf0;background:#f8fbfd}
.research-photo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin:0 0 18px}
.research-photo-grid .photo-frame{height:200px}
.research-figure-detail{border:1px solid var(--line);border-radius:6px;background:#f6fafc;margin-top:18px;padding:0 15px}
.research-figure-detail summary{font-size:12px;color:var(--blue);cursor:pointer;padding:12px 0}
.research-figure-detail .concept-figure{margin:0 0 14px}
@media(max-width:1100px){.topic-body{grid-template-columns:1fr;gap:15px}.primary-photo .photo-frame{height:300px}.research2026 .page-layout{grid-template-columns:minmax(0,1fr) 165px;gap:20px}.research-intro{grid-template-columns:1fr 245px;gap:25px}.research2026 .research-catch{font-size:28px}.research-topic{padding:23px}.topic-heading h3{font-size:21px}.field-overview{grid-template-columns:1fr 1fr}.field-summary.ultrasound ul{grid-template-columns:1fr}.field-summary{padding:19px}}
@media(max-width:700px){.research-intro{grid-template-columns:1fr;gap:20px}.research2026 .research-catch{font-size:26px}.sound-definition{padding:17px;display:grid;grid-template-columns:65px 1fr;gap:0 14px}.sound-definition svg{width:65px;grid-row:1/3;align-self:center}.sound-definition strong{font-size:14px;margin:0 0 5px}.sound-definition p{font-size:12px}.field-overview{grid-template-columns:1fr;gap:14px}.field-summary h2{font-size:19px}.research2026 .page-layout{display:flex;gap:23px}.research2026 .toc{order:-1;position:static;width:100%;padding:14px}.research2026 .toc h2{margin-bottom:8px}.research2026 .toc .toc-group,.research2026 .toc .toc-extra{display:none}.research2026 .toc a{display:inline-block;padding:6px 9px;border:0;font-size:11px;background:var(--pale);margin:3px}.research-area{margin-bottom:34px}.area-heading h2{font-size:22px}.area-heading p:last-child{font-size:13px}.research-topic{padding:19px}.topic-heading{gap:11px}.topic-heading h3{font-size:20px}.topic-index{font-size:14px;flex-basis:35px;padding:11px 7px}.topic-description{font-size:13px}.topic-method{grid-template-columns:1fr;gap:8px}.topic-method div{padding:11px 12px}.device-types{grid-template-columns:1fr}.research-photo-grid{grid-template-columns:1fr}.photo-frame,.primary-photo .photo-frame{height:220px}.research-photo figcaption{font-size:11px}.research-links{padding:19px}.preview-banner{text-align:left;padding:10px 20px}.home-research-grid.research-overview-grid{grid-template-columns:1fr}.home-research-grid.research-overview-grid h3{font-size:17px}}

/* Approved people-free research illustrations. */
.research-illustration .photo-frame{padding:0;background:#f6f9fb}
.research-illustration figcaption{font-size:12px;line-height:1.85}
.illustration-label{display:inline-block;padding:1px 7px;margin:0 7px 4px 0;border-radius:3px;background:#e8f3f4;color:#2d706f;font-size:10px;font-weight:700;white-space:nowrap}
.research-photo-details{border:1px solid var(--line);border-radius:6px;background:#f8fbfd;margin:0 0 18px;padding:0 15px}
.research-photo-details summary{font-size:12px;color:var(--blue);cursor:pointer;padding:12px 0}
.research-photo-details[open] summary{border-bottom:1px solid var(--line);margin-bottom:14px}
.research-photo-details .research-photo-grid{margin:0 0 15px}
.research-photo-details .research-photo-grid.single{grid-template-columns:1fr;max-width:560px}
.home-research-grid .home-research-visual{display:block;width:100%;height:190px;object-fit:contain;background:#f4f8fb;margin-top:16px;border:1px solid #deeaef;border-radius:5px}
@media(max-width:700px){.research-photo-details{padding:0 12px}.research-illustration figcaption{font-size:11px}.home-research-grid .home-research-visual{height:180px}}
.research-media-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;align-items:start}
.research-media-grid.single{grid-template-columns:1fr;max-width:620px}
.research-video-card{border:1px solid #dae6ee;border-radius:7px;overflow:hidden;background:#f8fafc;min-width:0}
.video-frame{background:#edf1f5;aspect-ratio:16/10;display:flex;align-items:center;justify-content:center;position:relative}
.research-preview{display:block;width:100%;height:100%;object-fit:contain;background:#edf1f5;aspect-ratio:16/10}
.video-card-body{padding:13px}
.video-card-body h4{font-size:14px;line-height:1.7;color:var(--navy);margin:0 0 6px}
.video-caption{font-size:12px;line-height:1.85;color:var(--ink);margin:0 0 7px}
.video-meta{font-size:10px;line-height:1.7;color:var(--muted);margin-bottom:10px}
.video-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.full-view{display:inline-block;font-size:12px;line-height:1.7;text-decoration:none;padding:6px 10px;border:1px solid #bbd3df;border-radius:4px;background:#e9f3f8;color:var(--blue)}
.full-view:hover{background:#deedf5}
.video-error{font-size:11px;line-height:1.7;color:#7c392d;background:#fff3ee;margin-top:10px;padding:8px}
.research-dialog{padding:23px;border:1px solid #b9cdd9;border-radius:10px;width:min(940px,94vw);max-height:92vh;overflow:auto;color:var(--ink);background:#fff}
.research-dialog::backdrop{background:rgba(12,28,41,.76)}
.dialog-heading{display:flex;gap:16px;align-items:flex-start;justify-content:space-between;margin-bottom:14px}
.dialog-heading h2{font-size:20px;line-height:1.6;color:var(--navy)}
.dialog-heading button{font:inherit;font-size:12px;border:1px solid var(--line);border-radius:4px;background:#f1f6fa;padding:6px 12px;white-space:nowrap}
.research-dialog video{display:block;width:100%;height:auto;max-height:65vh;background:#101b25;object-fit:contain}
.research-dialog p{font-size:13px;line-height:1.9;margin-top:12px}
.research-dialog .audio-note{font-size:12px;color:var(--muted);margin-top:6px}
.research-player{background:#101b25;border:1px solid #d6e3ec;border-radius:6px;overflow:hidden}
.player-controls{padding:12px;background:#eef4f8;color:var(--navy);font-size:12px;line-height:1.7}
.player-progress-row{display:grid;grid-template-columns:auto minmax(70px,1fr) auto;gap:12px;align-items:center}
.player-controls button{font:inherit;color:var(--navy);background:#fff;border:1px solid #a8c2d3;border-radius:4px;padding:7px 12px;min-height:38px}
.player-controls button:hover{background:#deedf5}
.player-controls input[type=range]{width:100%;min-width:0;margin:0;accent-color:var(--blue);cursor:pointer}
.player-controls input:focus-visible{outline:3px solid #008bb9;outline-offset:4px}
.player-time{font:12px/1.7 Consolas,monospace;white-space:nowrap;min-width:94px;text-align:right}
.player-options{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:12px}
.player-volume-label{display:flex;align-items:center;gap:8px;width:150px;white-space:nowrap}
.media-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.research-player:fullscreen{display:flex;flex-direction:column;width:100vw;height:100vh;border:0;border-radius:0;background:#101b25}
.research-player:fullscreen video{flex:1;min-height:0;height:0;max-height:none;object-fit:contain}
.research-player:fullscreen .player-controls{flex-shrink:0}
@media(max-width:700px){.player-progress-row{gap:8px}.player-controls{padding:10px}.player-controls button{padding:7px 10px}.player-options{gap:8px}.player-time{font-size:11px;min-width:84px}}
.future-video-poster{display:block;width:100%;height:100%;object-fit:contain}.research-video-slot{margin-bottom:18px}
@media(max-width:700px){.research-media-grid{grid-template-columns:1fr}.research-dialog{padding:16px}.dialog-heading h2{font-size:17px}.research-dialog video{max-height:60vh}}

/* Device materials from the user's presentation, 2026-10-13. */
.device-showcase{margin:24px 0 20px}.device-showcase>h4{font-size:19px;color:var(--navy);margin:0 0 15px;line-height:1.6}
.device-showcase-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.device-type-card{min-width:0;border:1px solid var(--line);border-radius:8px;background:#fff;padding:20px}
.device-type-card .device-code{font-size:11px;font-weight:700;letter-spacing:.03em;color:var(--blue);line-height:1.7;margin:0 0 7px}.device-type-card h5{font-size:17px;line-height:1.65;color:var(--navy);margin:0 0 10px}.device-type-card>p:not(.device-code){font-size:13px;line-height:1.9;margin:0 0 14px}
.device-picture{margin:14px 0 0;background:#f6fafc;border:1px solid var(--line);border-radius:6px;overflow:hidden}.device-picture>img{display:block;max-width:100%;width:100%;height:240px;object-fit:contain;background:#fff;padding:12px}.device-picture.hdi>img{width:100%;height:220px;object-fit:none}.device-picture figcaption{font-size:11px;line-height:1.8;color:var(--muted);padding:10px 12px}
.device-image-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.device-image-pair .device-picture>img{height:210px;padding:8px}.device-extra{font-size:12px;color:var(--blue);margin-top:15px}.device-extra summary{cursor:pointer}.device-extra .device-picture>img{height:auto;max-height:300px;object-fit:contain}
.device-showcase+.research-video-slot{margin:22px 0}.research-static .research-video-slot:not([hidden]){display:block}.research-static .device-showcase .device-picture figcaption{font-size:11px}
@media(max-width:900px){.device-showcase-grid{grid-template-columns:1fr}.device-picture>img{height:250px}.device-image-pair .device-picture>img{height:210px}}
@media(max-width:500px){.device-type-card{padding:16px}.device-type-card h5{font-size:16px}.device-image-pair{grid-template-columns:1fr 1fr}.device-image-pair .device-picture>img{height:170px}}