:root{--ink:#222b33;--muted:#596976;--accent:#36596d;--wash:#f5f7f8;--line:#dce3e7;--practice:#eef3f5;--danger:#933c39}
*{box-sizing:border-box}body{margin:0;background:var(--wash);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;font-size:16px;line-height:1.85}button,input,select{font:inherit}button{cursor:pointer;background:var(--accent);color:white;border:1px solid var(--accent);border-radius:10px;padding:.75rem 1.3rem;font-weight:600;min-height:48px}button:disabled{cursor:not-allowed;opacity:.45}button.secondary{background:white;color:var(--accent)}button.text-button{background:transparent;border-color:transparent;color:var(--accent);padding:.45rem .65rem}button.danger{color:var(--danger)}button:hover:not(:disabled){filter:brightness(.92)}:focus-visible{outline:3px solid #8cbdcb;outline-offset:3px}[hidden]{display:none!important}
.site-header{background:white;border-bottom:1px solid var(--line);padding:21px max(20px,calc((100vw - 1040px)/2));display:flex;align-items:center;justify-content:space-between;gap:12px}.wordmark{font-size:20px;font-weight:700;letter-spacing:.01em}.wordmark span{font-weight:400;margin-left:.4em;font-size:16px}.version{font-size:11px;letter-spacing:.15em;color:var(--muted)}main{max-width:940px;margin:auto;padding:0 24px 30px}.hero{padding:54px 0 28px}.eyebrow{color:var(--accent);font-size:12px;letter-spacing:.13em;font-weight:700}h1{font-size:clamp(25px,3.5vw,37px);line-height:1.65;letter-spacing:.05em;font-weight:600;margin:16px 0}h2{font-size:21px;margin:0 0 14px;font-weight:600}h3{font-size:18px;margin:0 0 8px}p{margin:10px 0}.hero>p:last-child{color:var(--muted)}.card{background:white;border:1px solid var(--line);border-radius:16px;padding:30px;margin:24px 0;box-shadow:0 6px 26px #283b4a05}.narrow{max-width:600px;margin:24px auto}.muted{color:var(--muted)}.small{font-size:13px}.notice{border-left:3px solid var(--accent);background:#eaf0f3;border-radius:4px;padding:12px 18px;font-size:14px;overflow-wrap:anywhere}.notice.error{border-color:var(--danger);background:#fbf0ee}.toolbar{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);margin-top:20px}.section-heading{display:flex;align-items:baseline;gap:14px}.step{font-size:12px;letter-spacing:.12em;color:var(--accent);font-weight:700}.columns{display:grid;grid-template-columns:1.15fr 1fr;gap:24px}label{display:block;margin:12px 0 8px;font-size:14px;font-weight:600}input:not([type=checkbox]),select{width:100%;border:1px solid #b8c4cc;background:white;border-radius:8px;padding:11px 12px;color:var(--ink)}form button{margin-top:22px}details{margin:20px 0;color:var(--muted);font-size:14px}summary{cursor:pointer;color:var(--ink);font-weight:600}.consent-detail p{font-size:13px}.check{display:flex;gap:12px;align-items:flex-start;font-weight:400;font-size:14px}.check input{width:19px;height:19px;flex-shrink:0;margin-top:4px;accent-color:var(--accent)}blockquote{margin:24px 0;padding:24px;border:0;border-radius:12px;background:var(--wash);font-size:20px;line-height:2.1;letter-spacing:.04em}.reading-guide{font-size:14px}.reading-guide span{margin-left:12px;font-size:12px;color:var(--muted)}.record-area{text-align:center;padding:14px 0}.timer{font-size:38px;letter-spacing:.1em;font-variant-numeric:tabular-nums;color:var(--accent)}.button-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:16px 0}.record-area .button-row{justify-content:center}audio{width:100%;margin:10px 0}.processing{display:flex;align-items:center;gap:18px;background:var(--wash);padding:20px;border-radius:10px;margin-top:18px}.spinner{width:25px;height:25px;border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin 1.2s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0}.metric{border:1px solid var(--line);padding:18px;border-radius:12px}.metric-label{font-size:13px;min-height:3.6em;color:var(--muted)}.metric-value{font-size:29px;line-height:1.5;letter-spacing:.01em;font-variant-numeric:tabular-nums;color:var(--accent)}.goal-caption{font-size:13px;color:var(--muted)}.comment{padding:20px 0;border-bottom:1px solid var(--line)}.comment p{margin-bottom:0}.comment h3{font-size:16px;color:var(--accent)}.practice{border-radius:14px;background:var(--practice);padding:26px;margin:26px 0 18px}.practice h3{font-size:23px}.practice .eyebrow{margin-top:0}.practice .caption{font-size:13px;color:var(--muted)}.practice .caution{font-size:12px;color:var(--muted);border-top:1px solid #d4e0e7;padding-top:12px}.saved{font-size:12px;color:var(--muted)}.history-row{display:flex;gap:18px;justify-content:space-between;padding:17px 0;border-bottom:1px solid var(--line);align-items:center}.history-info{font-size:14px}.history-id{font-size:11px;word-break:break-all;color:var(--muted)}.history-actions{display:flex;gap:5px;flex-shrink:0}.secret{display:block;word-break:break-all;background:var(--wash);border:1px dashed var(--accent);padding:14px}.footer{text-align:center;margin:44px 0 12px;color:var(--muted);font-size:12px}.footer p:first-child{font-size:17px;color:var(--ink)}.footer small{font-size:10px}
@media(max-width:650px){main{padding:0 14px 24px}.site-header{padding:16px}.wordmark{font-size:18px}.wordmark span{display:block;font-size:13px;margin-left:0}.version{font-size:10px}.hero{padding:30px 4px 20px}.wide{display:none}.card{padding:20px 17px;border-radius:12px}.columns{grid-template-columns:1fr;gap:4px}blockquote{font-size:18px;padding:18px}.reading-guide span{display:block;margin-left:0}.metric-grid{grid-template-columns:1fr;gap:8px}.metric{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px}.metric-label{min-height:0;max-width:62%}.metric-value{font-size:25px;white-space:nowrap}.history-row{align-items:flex-start;flex-direction:column;gap:4px}.practice{padding:20px}.button-row button{max-width:100%}}
@media(prefers-reduced-motion:reduce){.spinner{animation:none}}

/* Brand-only revision: keep the established palette and page layout. */
.wordmark,.version{white-space:nowrap}
.footer .copyright{margin:18px 0 0}
.footer .copyright small{font-size:12px;letter-spacing:.04em;color:var(--muted)}
@media(max-width:650px){.wordmark span{display:inline;margin-left:.35em}.site-header{flex-wrap:wrap}}


/* TrialUI1: formal invited web-trial presentation. */
.hero-copy{max-width:760px;font-size:17px}
.experience-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:30px 0 18px}
.flow-item{background:white;border:1px solid var(--line);border-radius:14px;padding:18px 18px 16px;box-shadow:0 6px 22px #283b4a04}
.flow-item span{display:block;color:var(--accent);font-size:11px;letter-spacing:.14em;font-weight:700;margin-bottom:5px}
.flow-item strong{display:block;font-size:15px;font-weight:600}
.flow-item small{display:block;color:var(--muted);font-size:12px;line-height:1.65;margin-top:5px}
.hero-note{font-size:13px;color:var(--muted);max-width:780px}
.session-note{margin:18px 0 0;padding:11px 14px;border-radius:9px;background:var(--wash);color:var(--muted);font-size:12px}
.notice.compact{margin:14px 0 0;padding:10px 14px}
.footer-meta{max-width:620px;margin:18px auto 0;font-size:11px}
.footer-meta summary{display:inline-block;color:var(--muted);font-weight:400}
.footer-meta small{display:block;margin-top:7px;overflow-wrap:anywhere}
@media(max-width:650px){.experience-flow{grid-template-columns:1fr;gap:8px;margin-top:22px}.flow-item{padding:14px 16px}.hero-copy{font-size:15px}.footer-meta{margin-top:14px}}

/* PublicTrial1: no-login public voice-link experience. */
.privacy-chip{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:999px;padding:5px 10px;background:#fff;color:var(--accent);font-size:11px;font-weight:700;letter-spacing:.04em}
.voice-link-info{margin:10px 0 0;color:var(--muted);font-size:11px;overflow-wrap:anywhere}
@media(max-width:650px){.toolbar{gap:10px;align-items:flex-start}.privacy-chip{flex-shrink:0}}

/* Visuals1: presentation-only full-recording waveform and spectrogram. */
.voice-visuals{margin:22px 0 28px;padding:24px 0 4px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.voice-visuals-intro{margin-bottom:18px}.voice-visuals-intro h3{font-size:20px;margin-bottom:4px;color:var(--ink)}.voice-visuals-intro p{margin:0;color:var(--muted);font-size:14px}
.voice-visual-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:stretch}
.voice-visual-card{min-width:0;height:100%;display:flex;flex-direction:column;overflow:hidden;background:linear-gradient(180deg,#fbfcfd 0%,#f7f9fa 100%);border:1px solid var(--line);border-radius:14px;padding:16px 14px 14px;box-shadow:0 6px 22px #283b4a05}
.voice-visual-card h4{margin:0 0 12px;font-size:15px;font-weight:700;color:var(--accent);letter-spacing:.02em}
.voice-figure{display:grid;grid-template-columns:25px minmax(0,1fr);grid-template-rows:auto 22px auto;column-gap:7px;align-items:stretch;flex:1;min-width:0;width:100%}.spectrogram-figure{grid-template-columns:25px 34px minmax(0,1fr);min-width:0}
.visual-axis-y{grid-column:1;grid-row:1;writing-mode:vertical-rl;text-orientation:upright;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--muted);font-size:10px;line-height:1.25;letter-spacing:.03em}
.visual-image-shell{grid-column:2;grid-row:1;width:100%;max-width:100%;height:132px;background:#fafcfd;border:1px solid #d6e0e5;border-radius:8px;overflow:hidden;min-width:0}
.visual-image-shell img{display:block;width:100%;height:100%;max-width:100%;min-width:0;object-fit:fill}.spectrogram-shell{grid-column:3;background:#000080}.visual-image-shell img:not([src]){visibility:hidden}
.visual-axis-x{grid-column:2;grid-row:2;text-align:center;align-self:center;color:var(--muted);font-size:10px;line-height:1}.spectrogram-figure .visual-axis-x{grid-column:3}
.visual-color-legend{grid-column:2;grid-row:3;display:grid;grid-template-columns:auto minmax(80px,1fr) auto;gap:7px;align-items:center;margin-top:5px;color:var(--muted);font-size:9px;line-height:1.2;min-width:0}
.spectrogram-figure .visual-color-legend{grid-column:3}.spectrogram-scale{grid-column:2;grid-row:1;position:relative;display:flex;flex-direction:column;justify-content:space-between;align-items:flex-end;min-width:0;padding:2px 4px 2px 0;color:var(--muted);font-size:8px;line-height:1;font-variant-numeric:tabular-nums}.spectrogram-unit{position:absolute;right:4px;top:-12px;font-size:8px;font-weight:600;color:var(--muted)}.visual-color-legend .strength-bar{height:8px;border-radius:999px;border:1px solid #d7dce0;background:linear-gradient(90deg,#000080 0%,#0000ff 12.5%,#00ffff 37.5%,#ffff00 62.5%,#ff0000 87.5%,#800000 100%)}
.visual-color-legend strong{grid-column:1/-1;text-align:center;font-size:9px;font-weight:600;color:var(--muted);letter-spacing:.03em}
.analysis-wait-note{margin:10px 0 4px;padding:10px 12px;border-radius:9px;background:#f3f7f8;color:var(--muted);font-size:13px;line-height:1.65}.analysis-wait-note strong{color:var(--ink);font-weight:600}
@media(max-width:650px){.voice-visuals{padding-top:20px}.voice-visual-grid{grid-template-columns:1fr;gap:12px}.voice-visual-card{padding:15px 12px 12px}.voice-visuals-intro p{font-size:13px}.voice-figure{grid-template-columns:23px minmax(0,1fr);column-gap:6px}.spectrogram-figure{grid-template-columns:23px 32px minmax(0,1fr)}.visual-image-shell{width:100%;max-width:100%;height:auto;aspect-ratio:900/320}.visual-image-shell img{height:100%}.visual-axis-y,.visual-axis-x{font-size:9px}.spectrogram-scale{font-size:7px;padding-right:3px}.spectrogram-unit{right:3px;font-size:7px}}