:root{--color-text: #17314d;--color-text-soft: rgba(23, 49, 77, .82);--color-text-muted: rgba(23, 49, 77, .58);--color-panel: rgba(255, 255, 255, .82);--color-panel-strong: rgba(255, 255, 255, .96);--color-border: rgba(94, 141, 196, .18);--color-surface: rgba(255, 255, 255, .74);--color-accent: #5d9be0;--color-accent-strong: #3d7ec8;--color-accent-deep: #1f4f81;--color-error: #d45c6f;--lane-japanese-highlight: rgba(97, 157, 224, .1);--lane-english-highlight: rgba(95, 175, 190, .1);color:var(--color-text);background:radial-gradient(circle at top left,rgba(118,187,255,.16),transparent 22%),radial-gradient(circle at 82% 14%,rgba(85,146,212,.1),transparent 22%),radial-gradient(circle at 50% 100%,rgba(166,210,255,.18),transparent 34%),linear-gradient(160deg,#f7fbff,#eef5fb 48%,#f4f8fc);font-family:Avenir Next,Hiragino Sans,Yu Gothic,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input,select,textarea{font:inherit}button{cursor:pointer}.shell{width:min(100%,calc(100% - 24px));margin:0 auto;padding:18px 0 22px}.board{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:linear-gradient(180deg,#81b6ec1f,#fff0),var(--color-panel);border:1px solid var(--color-border);border-radius:30px;padding:18px;box-shadow:0 24px 64px #6388b029}.board-status{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:16px}.board-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:stretch}.speech-toggle{position:relative;display:inline-grid;grid-template-columns:minmax(0,auto) 42px 34px;align-items:center;gap:10px;min-height:44px;padding:8px 12px;border:1px solid var(--color-border);border-radius:999px;background:var(--color-panel-strong);color:var(--color-text-soft);box-shadow:0 10px 22px #6388b01a}.speech-toggle-disabled{opacity:.52}.speech-toggle-label,.speech-toggle-state{font-size:.86rem;font-weight:700;white-space:nowrap}.speech-toggle-state{color:var(--color-text-muted)}.speech-toggle-input{position:absolute;width:1px;height:1px;opacity:0}.speech-toggle-track{position:relative;width:42px;height:24px;border-radius:999px;background:#7e97b247;transition:background .16s ease,box-shadow .16s ease}.speech-toggle-thumb{position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:999px;background:#fff;box-shadow:0 2px 8px #35557838;transition:transform .16s ease}.speech-toggle-input:checked+.speech-toggle-track{background:linear-gradient(135deg,var(--color-accent),var(--color-accent-strong));box-shadow:0 8px 18px #3d7ec838}.speech-toggle-input:checked+.speech-toggle-track .speech-toggle-thumb{transform:translate(18px)}.speech-toggle-input:focus-visible+.speech-toggle-track{outline:3px solid rgba(93,155,224,.34);outline-offset:3px}.speech-settings{display:grid;gap:10px;min-width:min(100%,320px);padding:14px 16px;border:1px solid var(--color-border);border-radius:24px;background:var(--color-panel-strong);box-shadow:0 10px 22px #6388b01a}.speech-settings-copy{display:grid;gap:2px}.speech-settings-copy h3,.speech-settings-note{margin:0}.speech-settings-copy h3{font-size:1rem;color:var(--color-text)}.speech-settings-note{color:var(--color-text-muted);font-size:.84rem}.segmented-control{display:inline-grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.segmented-control-button,.lane-language-button{min-height:42px;border:1px solid var(--color-border);border-radius:16px;background:#ffffffa3;color:var(--color-text-soft);font-weight:700;transition:background .16s ease,border-color .16s ease,box-shadow .16s ease,color .16s ease}.segmented-control-button-active,.lane-language-button-active{background:linear-gradient(135deg,#5d9be02e,#3d7ec814);border-color:#3d7ec857;color:var(--color-accent-deep);box-shadow:0 10px 18px #3d7ec824}.lane-language-button{margin-top:14px;width:100%}.card-header,.lane-kicker,.status-block p{color:var(--color-text-muted)}.secondary-button,.primary-button,.message-bubble,.composer-card textarea{border-radius:18px}.secondary-button,.primary-button{border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text)}.secondary-button{min-height:48px;padding:10px 16px;background:linear-gradient(180deg,#7ac6ff38,#7ac6ff14),var(--color-surface)}.secondary-button:disabled{opacity:.45;cursor:not-allowed}.card-header{display:flex;justify-content:space-between;gap:12px;font-size:.92rem}.primary-button{min-width:148px;min-height:48px;padding:16px 24px;background:linear-gradient(135deg,var(--color-accent),var(--color-accent-strong));color:#f8fbff;font-weight:700;box-shadow:0 14px 28px #5a8fc833}.primary-button:disabled{opacity:.5;cursor:not-allowed}.status-block{display:grid;gap:6px;justify-items:end;max-width:720px}.status-block p{margin:0;text-align:right}.lane-legend h2,.lane-kicker{margin:0}.lane-legend h2{color:var(--color-text);font-size:clamp(1.06rem,1.6vw,1.28rem)}.lane-kicker{font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--color-text-muted)}.lane-state{color:var(--color-text-soft);font-size:.96rem;white-space:nowrap}.conversation-board{display:grid;gap:18px}.lane-legend{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.lane-legend-item{padding:18px 20px;border:1px solid var(--color-border);border-radius:24px;background:var(--color-panel-strong);box-shadow:0 10px 24px #7896be14}.lane-legend-item-japanese{background:linear-gradient(180deg,#619de00d,#ffffffeb),#ffffffe0;border-color:#619de03d}.lane-legend-item-english{background:linear-gradient(180deg,#5fafbe0d,#ffffffeb),#ffffffe0;border-color:#5fafbe3d}.conversation-thread{display:grid;gap:12px;align-content:start;max-height:min(62vh,680px);min-height:280px;overflow-y:auto;padding:22px;border:1px solid var(--color-border);border-radius:28px;background:linear-gradient(180deg,#ffffffd6,#f8fbfff2),#ffffffe6;box-shadow:inset 0 1px #ffffffa3;scroll-behavior:smooth}.empty-thread{margin:auto 0;text-align:center;color:var(--color-text-muted);padding:48px 20px}.message-row{display:flex}.message-row-left{justify-content:flex-start}.message-row-right{justify-content:flex-end}.message-card{max-width:min(78%,620px);display:grid;gap:0;border:1px solid var(--color-border);overflow:hidden;box-shadow:0 12px 28px #6b90b814}.message-segment{padding:14px 18px}.message-segment-live{background:#ffffff3d}.message-segment+.message-segment{border-top:1px solid rgba(94,141,196,.14)}.message-card p,.bubble-meta{margin:0}.bubble-meta{margin-bottom:6px;color:var(--color-text-muted);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase}.message-card p:last-child{white-space:pre-wrap}.message-card-left,.message-card-draft{background:#619de01a;border-color:#619de02e;border-top-left-radius:10px}.message-card-right{background:#5fafbe1a;border-color:#5fafbe2e;border-top-right-radius:10px}.message-segment-translation{background:#fff6}.message-card-right .message-segment-translation,.message-segment-pending{color:var(--color-text-soft)}.pending-line{display:flex;align-items:center;gap:10px;min-height:1.5rem}.typing-indicator{display:inline-flex;gap:4px;align-items:center}.typing-indicator span{width:6px;height:6px;border-radius:999px;background:#3d7ec8b8;animation:indicator-bounce 1s infinite ease-in-out}.typing-indicator span:nth-child(2){animation-delay:.16s}.typing-indicator span:nth-child(3){animation-delay:.32s}.typing-indicator-soft span{background:#619de094}@keyframes indicator-bounce{0%,80%,to{transform:translateY(0);opacity:.45}40%{transform:translateY(-3px);opacity:1}}.error-text{color:var(--color-error)!important}@media (max-width: 860px){.shell{width:min(100% - 16px,1120px);padding-top:12px}.board{min-height:auto;padding:14px}.board-status{flex-direction:column}.board-actions{width:100%;flex-direction:column}.speech-settings{min-width:100%}.status-block{justify-items:stretch}.status-block p{text-align:left}.lane-legend{grid-template-columns:1fr}.conversation-board,.conversation-thread{max-height:none;min-height:auto}.message-card{max-width:92%}}body{margin:0}#root{min-height:100vh}.auth-screen{min-height:100vh;display:grid;place-items:center;padding:32px;background:radial-gradient(circle at top,rgba(255,226,181,.9),transparent 34%),linear-gradient(160deg,#f4efe4,#d7e0dd 48%,#f1f6f3)}.auth-card{width:min(560px,100%);padding:32px;border-radius:28px;background:#fffcf7e0;box-shadow:0 24px 64px #192b221f;color:#21342c}.auth-button,.auth-banner-button{border:0;border-radius:999px;background:#1f5c47;color:#f7f9f5;font:inherit;padding:12px 20px;cursor:pointer}.auth-button{margin-top:20px}.auth-config-list{margin:24px 0 0;display:grid;gap:12px}.auth-config-list div{display:grid;gap:4px}.auth-config-list dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:#5e7469}.auth-config-list dd{margin:0;word-break:break-all}.auth-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px;background:#1d4336;color:#f7f9f5}.auth-banner-label,.auth-banner-meta{margin:0}.auth-banner-label{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}.auth-banner-meta{font-size:.88rem;opacity:.8}