:root,html[data-theme=light]{--bg: #ffffff;--bg-elevated: #ffffff;--bg-sidebar: #f9f9f9;--border: #e5e5e5;--text: #0d0d0d;--text-muted: #6b6b6b;--accent: #0d0d0d;--accent-soft: #ececec;--accent-text: #0d0d0d;--danger: #c24b4b;--warn: #a67c00;--user-bubble: #f4f4f4;--glow-a: #f0f0f0;--glow-b: #f5f5f5;--radius: 10px;--header-height: 62px;--header-pad-y: 14px;--font: "IBM Plex Sans", system-ui, sans-serif;--mono: "IBM Plex Mono", ui-monospace, monospace}html[data-theme=dark]{--bg: #212121;--bg-elevated: #2f2f2f;--bg-sidebar: #171717;--border: #2f2f2f;--text: #ececec;--text-muted: #9b9b9b;--accent: #ececec;--accent-soft: #2f2f2f;--accent-text: #ececec;--danger: #d16b6b;--warn: #c9a227;--user-bubble: #2f2f2f;--glow-a: #1a1a1a;--glow-b: #141414}html[data-theme=oled-dark]{--bg: #000000;--bg-elevated: #0a0a0a;--bg-sidebar: #000000;--border: #1f1f1f;--text: #f2f2f2;--text-muted: #8a8a8a;--accent: #ececec;--accent-soft: #2a2a2a;--accent-text: #f2f2f2;--danger: #d16b6b;--warn: #c9a227;--user-bubble: #111111;--glow-a: #0a0a0a;--glow-b: #000000}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;overflow:hidden}body{font-family:var(--font);background:radial-gradient(1200px 600px at 10% -10%,var(--glow-a) 0%,transparent 55%),radial-gradient(900px 500px at 100% 0%,var(--glow-b) 0%,transparent 50%),var(--bg);color:var(--text);transition:background-color .2s ease,color .2s ease}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}.login-page{min-height:100%;height:100%;overflow:auto;display:grid;place-items:center;padding:24px}.login-card{width:min(380px,100%);display:flex;flex-direction:column;gap:12px;padding:28px 24px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-elevated)}.login-brand{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:4px}.login-brand .brand-mark{width:2.25rem;height:2.25rem}.login-brand strong{font-size:1.35rem}.login-brand span,.login-hint{color:var(--text-muted);font-size:.9rem}.login-card h1{margin:0;font-size:1.28rem;font-weight:600;letter-spacing:.01em}.login-heading{display:flex;flex-direction:column;gap:6px;min-width:0;flex:1}.login-subtitle{margin:0;font-size:.86rem;line-height:1.45;color:var(--text-muted);font-weight:400}.login-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;border-radius:10px;background:var(--accent-soft)}.login-tab{border:none;background:transparent;border-radius:8px;padding:8px 10px;font-size:.9rem;color:var(--text-muted)}.login-tab:hover{color:var(--text)}.login-tab.active{background:var(--bg-elevated);color:var(--text);font-weight:500;box-shadow:0 1px 2px #0000000f}.login-field{display:flex;flex-direction:column;gap:6px;font-size:.88rem}.login-phone-pill{display:flex;align-items:center;gap:10px;border:1px solid transparent;border-radius:14px;padding:2px 14px 2px 16px;background:color-mix(in srgb,var(--text) 5%,var(--bg))}.login-phone-pill:focus-within{background:var(--bg-elevated);border-color:color-mix(in srgb,var(--text) 18%,var(--border))}.login-phone-cc{flex-shrink:0;font-size:.95rem;font-weight:500;color:var(--text)}.login-phone-pill input{flex:1;min-width:0;border:none;background:transparent;padding:10px 0;border-radius:0}.login-field .login-phone-pill input:focus{outline:none}.login-sms-row{display:flex;gap:8px;align-items:stretch}.login-sms-row input{flex:1;min-width:0}.login-otp-top{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:34px;margin:0 0 6px}.login-otp-top h1{flex:1;margin:0;text-align:center;font-size:1.28rem;font-weight:600;letter-spacing:.01em;line-height:1.3}.login-otp-back,.login-otp-top-spacer,.login-otp-top .login-panel-close{width:32px;height:32px;flex-shrink:0}.login-otp-back{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:8px;background:transparent;color:var(--text);cursor:pointer}.login-otp-back:hover{background:color-mix(in srgb,var(--text) 6%,transparent)}.login-otp-body{display:flex;flex-direction:column;gap:8px}.login-otp-hint{margin:0;text-align:center;font-size:.84rem;line-height:1.4;color:var(--text-muted)}.login-otp-wrap{position:relative;margin:0}.login-otp-input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;border:0;padding:0;font-size:1.4rem;letter-spacing:1.6em;caret-color:var(--text);cursor:text}.login-otp-boxes{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;pointer-events:none}.login-otp-box{height:48px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:color-mix(in srgb,var(--text) 5%,var(--bg));border:1.5px solid transparent;font-size:1.25rem;font-weight:600;color:var(--text)}.login-otp-box.active{border-color:#3b82f6;background:var(--bg-elevated);box-shadow:0 0 0 3px color-mix(in srgb,#3b82f6 18%,transparent)}.login-otp-box.active:not(.filled):after{content:"";width:2px;height:1.15em;border-radius:1px;background:#3b82f6;animation:login-otp-caret 1s steps(1) infinite}@keyframes login-otp-caret{50%{opacity:0}}.login-otp-msg{text-align:center}.login-otp-status,.login-otp-resend{display:block;width:100%;margin:8px 0 0;border:none;background:none;padding:0;text-align:center;font-size:.84rem;color:var(--text-muted)}.login-otp-resend:not(:disabled){cursor:pointer;color:var(--text)}.login-otp-resend:not(:disabled):hover{text-decoration:underline}.login-otp-resend:disabled{cursor:default}.login-field input:-webkit-autofill,.login-field input:-webkit-autofill:hover,.login-field input:-webkit-autofill:focus{-webkit-text-fill-color:var(--text);box-shadow:0 0 0 1000px var(--bg) inset;transition:background-color 99999s ease-out}.login-error{color:var(--danger);font-size:.85rem}.login-info{color:var(--text-muted);font-size:.85rem}.login-submit{margin-top:0}.login-card .login-submit.btn.primary{background:var(--text);border-color:transparent;color:var(--bg);padding:11px 14px;font-weight:500;border-radius:12px}.login-card .login-submit.btn.primary:hover:not(:disabled){background:color-mix(in srgb,var(--text) 88%,#fff);border-color:transparent}.login-card .login-submit.btn.primary:disabled{opacity:.35}.login-agree{display:flex;align-items:flex-start;gap:8px;margin-top:6px;font-size:.78rem;line-height:1.45;color:var(--text-muted);cursor:pointer}.login-agree input{margin-top:3px;flex-shrink:0}.login-agree a{color:var(--text);text-decoration:underline;text-underline-offset:2px}.login-agree a:hover{opacity:.8}.login-links{display:flex;flex-direction:row;flex-wrap:wrap;gap:8px 20px;justify-content:center;align-items:center;margin-top:2px}.login-text-link{border:none;background:transparent;padding:0;color:var(--text-muted);font-size:.86rem;text-decoration:underline;text-underline-offset:3px;text-decoration-color:color-mix(in srgb,var(--text-muted) 40%,transparent)}.login-text-link:hover{color:var(--text);text-decoration-color:var(--text)}.login-text-link-muted{font-size:.8rem;text-decoration:none}.login-text-link-muted:hover{text-decoration:underline}.login-panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:6px}.login-panel-head-solo{margin-bottom:0}.login-panel-head h1{margin:0;font-size:1.28rem;font-weight:600}.login-panel-close{flex-shrink:0;border:none;background:transparent;padding:0 4px;font-size:1.35rem;line-height:1;color:var(--text-muted)}.login-panel-close:hover{color:var(--text)}.login-card-embedded{border:none;padding:4px 4px 8px;width:100%;background:transparent;min-height:228px;justify-content:center;gap:16px}.login-card-otp{gap:16px}.guest-shell .main{position:relative;background:var(--bg)}.landing-main-pane{--landing-ink: var(--text);--landing-muted: var(--text-muted);--landing-line: var(--border);--landing-display: "Noto Serif SC", "Songti SC", serif;position:relative;display:flex;flex-direction:column;height:100%;min-height:0;color:var(--landing-ink);overflow:hidden}.landing-atmosphere{pointer-events:none;position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;z-index:0}.landing-grid{position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(color-mix(in srgb,var(--border) 80%,transparent) 1px,transparent 1px),linear-gradient(90deg,color-mix(in srgb,var(--border) 80%,transparent) 1px,transparent 1px);background-size:48px 48px;-webkit-mask-image:radial-gradient(ellipse 80% 55% at 50% 30%,#000 15%,transparent 72%);mask-image:radial-gradient(ellipse 80% 55% at 50% 30%,#000 15%,transparent 72%);opacity:.45}.landing-wash{position:absolute;border-radius:50%;filter:blur(48px)}.landing-wash-a{width:min(70vw,720px);height:min(50vw,480px);left:-10%;top:-8%;background:color-mix(in srgb,var(--text-muted) 12%,transparent);animation:landing-drift-a 18s ease-in-out infinite alternate}.landing-wash-b{width:min(55vw,560px);height:min(45vw,420px);right:-8%;top:8%;background:color-mix(in srgb,var(--text) 6%,transparent);animation:landing-drift-b 22s ease-in-out infinite alternate}.landing-chart-hint{position:absolute;left:8%;right:8%;top:38%;height:120px;opacity:.14;background:linear-gradient(105deg,transparent 0%,transparent 18%,rgba(12,26,46,.35) 18%,rgba(12,26,46,.08) 42%,transparent 42%,transparent 55%,rgba(185,45,55,.35) 55%,rgba(185,45,55,.12) 72%,transparent 72%);-webkit-mask-image:linear-gradient(90deg,transparent,#000 15%,#000 85%,transparent);mask-image:linear-gradient(90deg,transparent,#000 15%,#000 85%,transparent);animation:landing-chart-in 1.1s ease-out both}@keyframes landing-drift-a{0%{transform:translate(0)}to{transform:translate(4%,6%)}}@keyframes landing-drift-b{0%{transform:translate(0)}to{transform:translate(-5%,4%)}}@keyframes landing-chart-in{0%{opacity:0;transform:translateY(12px)}to{opacity:.14;transform:translateY(0)}}@keyframes landing-rise{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.landing-main-header{position:relative;z-index:2;justify-content:flex-end}.landing-header-actions{display:flex;align-items:center;gap:8px;position:relative;z-index:1}.landing-scroll{position:relative;z-index:1;flex:1;min-height:0;overflow:auto;width:min(860px,100%);margin:0 auto;padding:0 clamp(16px,3vw,28px) 28px}.landing-link{border:none;background:transparent;color:var(--text);padding:8px 10px;font-size:.92rem;cursor:pointer}.landing-link:hover{opacity:.7}.main-header-actions{display:flex;align-items:center;gap:8px;position:relative;z-index:2;margin-left:auto;flex-shrink:0;background:var(--bg);padding-left:8px}.landing-nav-cta{border:none;background:var(--accent);color:var(--bg);border-radius:8px;padding:5px 14px;font-size:.88rem;font-weight:500;line-height:1.25;cursor:pointer}html[data-theme=dark] .landing-nav-cta,html[data-theme=oled-dark] .landing-nav-cta{color:#111}.landing-nav-cta:hover{opacity:.9}.landing-hero{min-height:min(58vh,520px);display:flex;flex-direction:column;justify-content:center;padding:20px 0 32px;animation:landing-rise .7s ease-out both}.landing-brand-mark-text{margin:0 0 10px;font-family:var(--landing-display);font-size:clamp(2.2rem,6vw,3.2rem);font-weight:700;letter-spacing:.12em;line-height:1.1;color:var(--landing-ink)}.landing-title{margin:0;font-family:var(--landing-display);font-size:clamp(1.45rem,3.2vw,2rem);font-weight:600;line-height:1.35;letter-spacing:.02em}.landing-lead{margin:12px 0 0;max-width:34em;color:var(--landing-muted);font-size:1.02rem;line-height:1.6;animation:landing-rise .75s ease-out .08s both}.landing-composer-row{margin-top:28px;display:grid;grid-template-columns:1fr auto;gap:10px;align-items:end;animation:landing-rise .8s ease-out .14s both}.landing-composer{border:1px solid var(--border);border-radius:16px;background:var(--bg-elevated);padding:14px 14px 10px;min-width:0}.landing-prompt{width:100%;border:none;outline:none;resize:none;background:transparent;min-height:84px;font-size:1rem;line-height:1.55;color:var(--text)}.landing-prompt::placeholder{color:var(--text-muted)}.landing-composer-hint{margin:8px 0 0;font-size:.8rem;color:var(--text-muted)}.landing-send{width:40px;height:40px;border:none;border-radius:50%;background:var(--accent);color:var(--bg);display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;transition:transform .15s ease,opacity .15s ease}html[data-theme=dark] .landing-send,html[data-theme=oled-dark] .landing-send{color:#111}.landing-send:hover:not(:disabled){opacity:.9;transform:translateY(-1px)}.landing-send:disabled{opacity:.35;cursor:not-allowed}.landing-examples{margin:14px 0 0;font-size:.86rem;color:var(--text-muted);line-height:1.55;animation:landing-rise .85s ease-out .2s both}.landing-example-link{border:none;background:none;padding:0;color:var(--text);text-decoration:underline;text-underline-offset:3px;text-decoration-color:color-mix(in srgb,var(--text) 28%,transparent);font-size:inherit}.landing-example-link:hover{text-decoration-color:var(--text)}.landing-flow{padding:28px 0 8px;border-top:1px solid var(--border);animation:landing-rise .9s ease-out .28s both}.landing-flow h2{margin:0 0 18px;font-family:var(--landing-display);font-size:1.15rem;font-weight:600}.landing-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px 28px;counter-reset:landing-step}.landing-steps li{counter-increment:landing-step;display:flex;flex-direction:column;gap:6px;min-width:0}.landing-steps li:before{content:counter(landing-step,decimal-leading-zero);font-family:var(--mono);font-size:.75rem;letter-spacing:.06em;color:var(--text-muted)}.landing-steps strong{font-size:.98rem;font-weight:600}.landing-steps span{font-size:.88rem;color:var(--text-muted);line-height:1.45}.landing-trust{margin:36px 0 0;padding-top:18px;border-top:1px solid var(--border);text-align:center;font-size:.82rem;color:var(--text-muted);letter-spacing:.04em}.landing-legal-bar{position:relative;z-index:2;flex-shrink:0;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:4px 18px;padding:8px 16px calc(8px + env(safe-area-inset-bottom,0px));font-size:.72rem;line-height:1.45;color:var(--text-muted);background:color-mix(in srgb,var(--bg) 88%,transparent);border-top:1px solid color-mix(in srgb,var(--border) 70%,transparent)}.landing-legal-bar a{color:inherit;text-decoration:none}.landing-legal-bar a:hover{text-decoration:underline}.guest-session-preview{padding:8px 12px}.guest-sidebar-grow{flex:1;min-height:0}.guest-preview-hint{border:1px dashed var(--border);border-radius:10px;padding:14px 12px;color:var(--text-muted);font-size:.85rem;line-height:1.45}.guest-preview-hint p{margin:0}.landing-auth{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:grid;place-items:center;padding:20px}.landing-auth-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;border:none;background:#0000006b;cursor:pointer}.landing-auth-panel{position:relative;z-index:1;width:min(400px,100%);min-height:248px;padding:16px 18px 18px;border-radius:14px;background:var(--bg-elevated);border:1px solid var(--border);box-shadow:0 18px 50px #0000002e;animation:landing-rise .28s ease-out both;box-sizing:border-box;display:flex;flex-direction:column}.landing-auth-pending{margin:0 0 12px;padding:10px 12px;border-radius:8px;background:var(--accent-soft);color:var(--text-muted);font-size:.82rem;line-height:1.45}.landing-auth-pending span{color:var(--text);font-weight:500}@media(max-width:720px){.landing-hero{min-height:auto;padding-top:12px}.landing-steps{grid-template-columns:1fr;gap:16px}.landing-nav-cta{padding:5px 14px}}.session-scope-tabs{display:flex;gap:4px;padding:0 10px 8px}.session-scope-tabs button{flex:1;border:1px solid var(--border);background:transparent;border-radius:8px;padding:6px 8px;font-size:.82rem;color:var(--text-muted)}.session-scope-tabs button.active{background:var(--accent-soft);color:var(--text);font-weight:600}.admin-users h3{margin:0 0 6px;font-size:1.05rem}.admin-create{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:12px 0 16px}.admin-create input,.admin-create select,.admin-user-actions select{border:1px solid var(--border);border-radius:8px;padding:8px 10px;background:var(--bg)}.admin-create .btn{grid-column:1 / -1}.admin-user-list{display:flex;flex-direction:column;gap:8px}.evo-issue-list{display:flex;flex-direction:column;gap:12px;margin-top:12px}.evo-issue{border:1px solid var(--border);border-radius:10px;padding:12px}.evo-issue-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.evo-issue-summary{margin:8px 0 0}.evo-issue-samples{margin:8px 0 0;padding-left:18px;font-size:.84rem}.evo-issue-samples a{color:var(--text)}.evo-issue-actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.evo-issue-active{font-weight:600}.admin-user-row{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:10px 12px;border:1px solid var(--border);border-radius:8px}.admin-user-main{display:flex;flex-direction:column;gap:2px;min-width:0}.admin-user-actions{display:flex;gap:8px;flex-shrink:0}@media(max-width:720px){.admin-create{grid-template-columns:1fr}.admin-user-row{flex-direction:column;align-items:stretch}}.app-shell{display:grid;grid-template-columns:280px 1fr;height:100%;min-height:0;overflow:hidden;transition:grid-template-columns .2s ease}.app-shell.sidebar-collapsed{grid-template-columns:52px 1fr}.app-shell.share-only-shell{grid-template-columns:1fr}.sidebar{background:color-mix(in srgb,var(--bg-sidebar) 92%,transparent);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.sidebar.collapsed{align-items:center}.brand{height:var(--header-height);padding:0 12px;display:flex;align-items:center;gap:10px;flex-shrink:0}.sidebar.collapsed .brand{flex-direction:column;height:auto;min-height:var(--header-height);padding:var(--header-pad-y) 0;gap:8px}.brand-mark{width:2rem;height:2rem;border-radius:0;flex-shrink:0;display:block;object-fit:contain;background:transparent}.brand-mark-light{display:block}.brand-mark-dark,html[data-theme=dark] .brand-mark-light,html[data-theme=oled-dark] .brand-mark-light{display:none}html[data-theme=dark] .brand-mark-dark,html[data-theme=oled-dark] .brand-mark-dark{display:block}.sidebar.collapsed .brand-mark{width:2.1rem;height:2.1rem}.brand-text{display:flex;flex-direction:row;align-items:baseline;gap:8px;min-width:0;flex:1}.brand h1{margin:0;font-size:1.35rem;letter-spacing:.1em;font-weight:650;line-height:1;color:var(--text)}.brand span{color:var(--text-muted);font-size:.78rem;letter-spacing:.04em;white-space:nowrap;line-height:1}.brand-tools{display:flex;align-items:center;gap:0;flex-shrink:0;margin-left:auto}.brand-tools .sidebar-icon-btn+.sidebar-icon-btn{margin-left:-6px}.sidebar-icon-btn{flex-shrink:0;width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--text-muted);cursor:pointer}.sidebar-icon-btn:hover{color:var(--text);background:color-mix(in srgb,var(--text) 6%,transparent)}.brand-search-btn{flex-shrink:0;width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--text-muted);cursor:pointer}.brand-search-btn:hover{color:var(--text);border-color:transparent;background:color-mix(in srgb,var(--text) 6%,transparent)}.sidebar-actions{padding:0 14px 12px;display:flex;flex-direction:column;gap:6px}.sidebar.collapsed .sidebar-actions,.sidebar.collapsed .sidebar-footer{padding-left:0;padding-right:0;width:100%;align-items:center}.sidebar-action-btn{flex:1;width:100%;position:relative;display:inline-flex;align-items:center;justify-content:center;gap:0;padding:10px 36px;font-size:.92rem;font-weight:500;text-align:center;background:var(--accent-soft);border-color:transparent;color:var(--text);border-radius:10px}.sidebar-action-btn svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);flex-shrink:0;color:var(--text)}.sidebar.collapsed .sidebar-action-btn{width:36px;height:36px;padding:0;justify-content:center;border-radius:10px}.sidebar.collapsed .sidebar-action-btn svg{position:static;transform:none}.sidebar-action-btn:hover:not(:disabled){background:color-mix(in srgb,var(--text) 10%,var(--accent-soft));border-color:transparent}.sidebar-action-btn.active{background:color-mix(in srgb,var(--text) 12%,var(--accent-soft));border-color:transparent}.btn{border:1px solid var(--border);background:var(--bg-elevated);border-radius:8px;padding:8px 12px;color:var(--text);transition:border-color .15s,background .15s}.btn:hover{border-color:color-mix(in srgb,var(--text) 28%,var(--border));background:color-mix(in srgb,var(--text) 4%,var(--bg-elevated))}.btn.primary{background:var(--accent-soft);border-color:transparent;color:var(--accent-text)}.btn.primary:hover{background:color-mix(in srgb,var(--text) 12%,var(--accent-soft));border-color:transparent}.btn.ghost{background:transparent}.btn:disabled{opacity:.5;cursor:not-allowed}.session-list{flex:1;overflow-x:hidden;overflow-y:auto;padding:4px 10px 16px;min-width:0}.session-row{display:flex;align-items:stretch;gap:4px;width:100%;max-width:100%;min-width:0;margin-bottom:4px;border:1px solid transparent;border-radius:8px;overflow:hidden}.session-row:hover{background:color-mix(in srgb,var(--text) 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