:root{--st-bg:#f5f7fb;--st-card:#fff;--st-ink:#182033;--st-muted:#737d90;--st-line:#e4e8ef;--st-blue:#1769e0;--st-blue-soft:#edf4ff;--st-danger:#c5221f;--st-ok:#16794b;--st-shadow:0 8px 28px rgba(27,42,76,.08)}
.st-logout{display:block;width:100%;margin-top:10px;border:0;border-top:1px solid var(--st-line);background:#fff;padding:15px 10px;text-align:left;font-weight:700;color:#9b2c26}
.st-app,.st-app *,.st-drawer,.st-drawer *{box-sizing:border-box}.st-app{width:min(100%,560px);min-height:100vh;margin:0 auto;background:var(--st-bg);color:var(--st-ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",Roboto,Arial,sans-serif}.st-app button,.st-app input,.st-app textarea,.st-app select,.st-drawer button{font:inherit}.st-app button,.st-drawer button{cursor:pointer}.st-topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:calc(10px + env(safe-area-inset-top)) 14px 10px;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--st-line)}.st-brand{display:flex;gap:10px;align-items:center}.st-logo{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,#1769e0,#5c99ec);display:grid;place-items:center;color:#fff;font-weight:800}.st-brand strong{display:block;font-size:15px}.st-brand small{display:block;color:var(--st-muted);font-size:11px}.st-iconbtn{width:42px;height:42px;border:0;border-radius:13px;background:#f1f4f8;font-size:21px}.st-content{padding:14px 14px calc(30px + env(safe-area-inset-bottom))}.st-page{display:none}.st-page.active{display:block}.st-langbar{display:grid;grid-template-columns:1fr 44px 1fr;background:#fff;border:1px solid var(--st-line);border-radius:17px;overflow:hidden;box-shadow:var(--st-shadow)}.st-langbar select{border:0;background:#fff;color:var(--st-blue);font-weight:750;padding:15px 8px;text-align:center;width:100%;outline:none}.st-langbar button{border:0;background:#fff;color:#657188;font-size:21px}.st-translator{margin-top:12px;background:#fff;border:1px solid var(--st-line);border-radius:20px;box-shadow:var(--st-shadow);overflow:hidden}.st-sourcebox{padding:16px}.st-sourcebox textarea{width:100%;min-height:135px;border:0;resize:none;outline:none;font-size:21px;line-height:1.5;color:var(--st-ink);background:transparent}.st-source-foot{display:flex;justify-content:flex-end;font-size:10px;color:var(--st-muted)}.st-quick-actions{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--st-line)}.st-quick{border:0;background:#fff;padding:13px 5px;color:#435066}.st-quick span{display:block;font-size:23px}.st-quick small{font-size:11px}.st-style-note{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;text-align:center;color:var(--st-muted);font-size:10px;border-left:1px solid var(--st-line);padding:7px 9px}.st-style-note span{font-weight:650}.st-style-note select{max-width:130px;width:100%;border:0;background:var(--st-blue-soft);color:var(--st-blue);border-radius:999px;padding:6px 24px 6px 10px;font-size:11px;font-weight:750;outline:none;text-align:center}.st-recording{background:#fff1f0!important;color:var(--st-danger)!important;animation:stPulse .9s infinite}@keyframes stPulse{50%{transform:scale(1.03)}}.st-result{margin-top:12px;background:#fff;border:1px solid var(--st-line);border-radius:20px;box-shadow:var(--st-shadow);overflow:hidden}.st-result-title{padding:13px 16px;border-bottom:1px solid var(--st-line);display:flex;justify-content:space-between;align-items:center;font-size:12px}.st-result-title span{color:var(--st-muted);font-size:10px}.st-result-text{min-height:130px;padding:18px 16px;font-size:21px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}.st-living-language{margin:0 12px 14px;padding:12px;border:1px solid #dbe7fb;border-radius:14px;background:#f7faff}.st-living-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px}.st-living-head strong{font-size:12px;color:#24466f}.st-living-head span{font-size:10px;color:var(--st-muted);background:#fff;border:1px solid var(--st-line);border-radius:999px;padding:4px 8px}.st-living-item{padding:9px 0;border-top:1px solid #e4edf9}.st-living-item:first-child{border-top:0;padding-top:2px}.st-living-term{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}.st-living-term strong{font-size:16px;color:var(--st-ink)}.st-living-term small{font-size:9px;color:var(--st-muted);text-transform:uppercase;letter-spacing:.04em}.st-living-meaning{margin-top:4px;font-size:13px;line-height:1.5;color:#263149}.st-living-usage,.st-living-warning{margin-top:4px;font-size:11px;line-height:1.5;color:var(--st-muted)}.st-living-warning{color:#8b4a16}.st-living-context{margin:8px 0 0;font-size:10px;line-height:1.5;color:var(--st-muted)}.st-result-actions{display:flex;gap:8px;flex-wrap:wrap;padding:0 12px 13px}.st-pill{border:1px solid var(--st-line);background:#fff;border-radius:999px;padding:9px 13px;font-weight:650;color:#354159}.st-primary{background:var(--st-blue);border-color:var(--st-blue);color:#fff}.st-toolbar{margin-bottom:12px}.st-back{border:0;background:var(--st-blue-soft);color:var(--st-blue);border-radius:10px;padding:8px 11px;font-weight:700}.st-card{background:#fff;border:1px solid var(--st-line);border-radius:19px;box-shadow:var(--st-shadow);padding:16px}.st-card h2{font-size:18px;margin:0 0 12px}.st-card label{display:block;color:var(--st-muted);font-size:12px;margin:12px 0 6px}.st-card textarea,.st-card input,.st-card select{width:100%;border:1px solid var(--st-line);border-radius:12px;padding:12px;background:#fff;outline:none}.st-card textarea{min-height:135px;resize:vertical}.st-card pre{font:inherit;white-space:pre-wrap;line-height:1.6;overflow-wrap:anywhere}.st-btn{margin-top:12px;border:0;border-radius:12px;padding:12px 15px;font-weight:750;background:var(--st-blue);color:#fff}.st-muted{font-size:12px;color:var(--st-muted);line-height:1.6}.st-error{display:none;background:#fff3f2;border:1px solid #ffd1ce;color:#8b1e19;border-radius:12px;padding:10px 12px;font-size:12px;margin-top:10px}.st-error.show{display:block}.st-loading{opacity:.55;pointer-events:none}.st-drawer{position:fixed;inset:0;z-index:99999;display:none;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",Roboto,Arial,sans-serif}.st-drawer.show{display:block}.st-shade{position:absolute;inset:0;background:rgba(10,18,32,.38)}.st-sheet{position:absolute;right:0;top:0;width:min(350px,88vw);height:100%;background:#fff;box-shadow:-12px 0 35px rgba(0,0,0,.16);padding:calc(15px + env(safe-area-inset-top)) 14px calc(18px + env(safe-area-inset-bottom));overflow:auto}.st-sheet-head{display:flex;justify-content:space-between;align-items:center;padding:2px 4px 10px}.st-sheet-head button{border:0;background:#f1f4f8;border-radius:10px;width:38px;height:38px}.st-account{background:#f5f7fb;border-radius:14px;padding:12px;margin-bottom:10px}.st-account strong{display:block;font-size:13px;overflow-wrap:anywhere}.st-account span{font-size:11px;color:var(--st-muted)}.st-menuitem{display:block;width:100%;border:0;background:#fff;border-bottom:1px solid var(--st-line);padding:15px 10px;text-align:left;font-weight:700;color:#263149}.st-menuitem.staff-only,.st-menuitem.admin-only,.st-menuitem.history-only{display:none}.st-drawer.staff .staff-only,.st-drawer.admin .staff-only,.st-drawer.admin .admin-only,.st-drawer.can-history .history-only{display:block}.st-toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%) translateY(15px);background:#172033;color:#fff;border-radius:999px;padding:10px 14px;font-size:12px;opacity:0;pointer-events:none;transition:.18s;z-index:100000;max-width:88%;text-align:center}.st-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}.st-history-row,.st-status-row,.st-glossary-row{padding:12px 0;border-bottom:1px solid var(--st-line)}.st-history-source,.st-history-result{font-size:12px;white-space:pre-wrap;line-height:1.5;margin-top:5px}.st-history-result{background:#f7f9fc;border-radius:10px;padding:9px}.st-history-meta{font-size:10px;color:var(--st-muted)}.st-learn{margin-top:8px}.st-ai-title{display:flex;justify-content:space-between;gap:12px}.st-provider-card{padding:12px 0;border-bottom:1px solid var(--st-line)}.st-ok{color:var(--st-ok);font-weight:700}.st-bad{color:var(--st-danger);font-weight:700}.st-login{max-width:480px;margin:50px auto;padding:28px;background:#fff;border:1px solid #e4e8ef;border-radius:18px;text-align:center}.st-login-btn{display:inline-block;padding:10px 16px;background:#1769e0;color:#fff!important;border-radius:10px;text-decoration:none}.st-app-page-full .site-header,.st-app-page-full .site-footer{display:none!important}@media(min-width:720px){.st-app{margin:18px auto;min-height:calc(100vh - 36px);border-radius:25px;overflow:hidden;box-shadow:0 18px 55px rgba(26,38,64,.13)}}

/* v1.0.1 mobile quick access */
.st-mobile-access{margin-top:22px;padding-top:20px;border-top:1px solid var(--st-line)}
.st-mobile-access-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.st-mobile-access h3{margin:0 0 5px;font-size:16px}.st-mobile-access p{margin:0}.st-install-badge{flex:0 0 auto;padding:5px 8px;border-radius:999px;background:#f1f4f8;color:var(--st-muted);font-size:11px;font-weight:700}.st-install-badge.st-install-ready{background:var(--st-blue-soft);color:var(--st-blue)}.st-install-badge.st-install-ok{background:#eaf7f0;color:var(--st-ok)}
.st-install-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.st-install-actions .st-btn,.st-install-actions .st-pill{width:auto;margin:0}.st-install-primary{min-width:150px}.st-app-url{margin-top:12px;padding:10px 12px;border:1px solid var(--st-line);border-radius:12px;background:#f8fafc;overflow:auto}.st-app-url code{white-space:nowrap;font-size:12px;color:#4b566b}.st-install-hint{margin-top:10px;padding:10px 12px;border-radius:12px;background:#fff8e8;color:#735b20;font-size:12px;line-height:1.55}.st-install-hint:empty{display:none}
@media(max-width:420px){.st-mobile-access-head{display:block}.st-install-badge{display:inline-block;margin-top:8px}.st-install-actions>*{flex:1 1 auto}}

/* v1.1.1 microphone diagnostics */
.st-mic-diagnostic{margin-top:18px;padding:16px;border:1px solid #e6e9ef;border-radius:16px;background:#fff}.st-mic-diagnostic h3{margin:0 0 5px}.st-diag-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:12px}.st-diag-grid>div{padding:10px;border-radius:12px;background:#f7f8fb;display:flex;flex-direction:column;gap:4px}.st-diag-grid span{font-size:12px;color:#68707d}.st-diag-grid strong{font-size:13px}.st-diag-grid .st-ok{color:#16794b}.st-diag-grid .st-bad{color:#b42318}@media(max-width:520px){.st-diag-grid{grid-template-columns:1fr}}

/* v1.2.1 history reuse + style filters */
.st-history-filter{display:flex;align-items:center;gap:10px;margin:0 0 12px;padding:10px 12px;border:1px solid var(--st-line);border-radius:12px;background:#f8fafc}.st-history-filter label{margin:0!important;flex:1;color:var(--st-muted);font-size:12px}.st-history-filter select{width:auto;min-width:125px;padding:8px 30px 8px 10px;border-radius:999px;background:#fff}.st-style-badge{display:inline-block;margin-left:5px;padding:2px 7px;border-radius:999px;background:var(--st-blue-soft);color:var(--st-blue);font-size:10px;font-weight:750;vertical-align:middle}.st-history-meta+.st-history-meta{margin-top:3px}.st-history-row .st-pill{margin-right:6px}
@media(max-width:420px){.st-history-filter{align-items:stretch;flex-direction:column}.st-history-filter select{width:100%}}

/* v1.3.0 Auto Learning Center */
.st-learning-summary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:12px 0 18px}
.st-learning-stat{border:1px solid rgba(0,0,0,.08);border-radius:14px;padding:12px;background:rgba(255,255,255,.7);display:flex;flex-direction:column;gap:4px}
.st-learning-stat span{font-size:12px;color:#667085}.st-learning-stat strong{font-size:18px}
.st-learning-controls{display:flex;align-items:center;gap:10px;margin:8px 0 14px;flex-wrap:wrap}.st-learning-controls label{font-size:13px;color:#667085}.st-learning-controls select{max-width:220px}
.st-learning-list{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}.st-learning-row{border:1px solid rgba(0,0,0,.08);border-radius:14px;padding:12px;background:#fff}.st-learning-row .st-history-source,.st-learning-row .st-history-result{white-space:pre-wrap;margin-top:8px}.st-learning-row .st-history-result{font-weight:600}.st-learning-row .st-pill{margin-top:10px}
@media(min-width:720px){.st-learning-summary{grid-template-columns:repeat(4,minmax(0,1fr))}}

/* v1.4.2 stability and history integrity */
.st-history-corrected{display:inline-block;padding:2px 7px;border-radius:999px;background:#eef8f1;color:#24733f;font-size:10px;font-weight:750;vertical-align:middle}.st-history-original{margin-top:8px;border:1px dashed var(--st-line);border-radius:10px;background:#fbfcfe;padding:8px 10px}.st-history-original summary{cursor:pointer;color:var(--st-muted);font-size:11px;font-weight:700}.st-history-original-text{margin-top:8px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;line-height:1.5;color:#596579}
.st-history-more{display:block;margin:14px auto 2px}
.st-source-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:7px;font-size:12px}.st-source-links a{color:var(--st-blue);font-weight:650;text-decoration:none}.st-source-links a:hover{text-decoration:underline}.st-source-note{margin-top:7px;font-size:11px;line-height:1.55;color:var(--st-muted)}
.st-conversation-card{padding-bottom:14px}.st-conversation-langs{display:grid;grid-template-columns:1fr 26px 1fr;gap:8px;align-items:end;margin-top:14px}.st-conversation-langs label{margin:0!important}.st-conversation-langs label span{display:block;margin-bottom:6px;font-size:11px;color:var(--st-muted)}.st-conversation-langs select{padding:10px 8px;text-align:center;color:var(--st-blue);font-weight:700}.st-conversation-arrow{text-align:center;color:var(--st-muted);padding-bottom:10px}.st-conversation-options{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:12px;padding:10px 12px;border-radius:12px;background:#f8fafc}.st-conversation-options label{margin:0!important;font-size:11px;color:#435066}.st-conversation-options input{width:auto;margin:0 5px 0 0;vertical-align:middle}.st-conversation-options .st-muted{font-size:10px;text-align:right}.st-conversation-list{display:flex;flex-direction:column;gap:10px;max-height:52vh;overflow:auto;margin:14px 0;padding:2px}.st-conversation-turn{max-width:92%;padding:10px 11px;border:1px solid var(--st-line);border-radius:15px;background:#f8fafc}.st-conversation-a{align-self:flex-start;border-top-left-radius:5px}.st-conversation-b{align-self:flex-end;border-top-right-radius:5px;background:var(--st-blue-soft);border-color:#d8e7ff}.st-conversation-meta{font-size:10px;color:var(--st-muted);margin-bottom:5px}.st-conversation-source{font-size:14px;line-height:1.45;white-space:pre-wrap;overflow-wrap:anywhere}.st-conversation-result{margin-top:7px;padding-top:7px;border-top:1px solid rgba(85,105,140,.16);font-size:14px;font-weight:650;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere}.st-conversation-turn .st-pill{margin-top:8px;padding:6px 10px;font-size:10px}.st-conversation-input textarea{min-height:90px}.st-conversation-send{display:flex;gap:8px;margin-top:9px}.st-conversation-send>*{flex:1;margin-top:0}.st-conversation-talk{border:1px solid var(--st-line);border-radius:13px;background:#fff;padding:11px 6px;color:#354159}.st-conversation-talk span,.st-conversation-talk small{display:block}.st-conversation-talk span{font-size:21px}.st-conversation-talk small{font-size:10px;margin-top:3px}.st-conversation-status{min-height:18px;margin-top:10px;text-align:center}.st-conversation-card.st-loading .st-conversation-talk{pointer-events:none}@media(max-width:420px){.st-conversation-options{align-items:flex-start;flex-direction:column}.st-conversation-options .st-muted{text-align:left}.st-conversation-send{flex-direction:column}}