:root{--portal-bg:#f2f4f8;--portal-surface:rgba(255,255,255,0.82);--portal-surface-strong:#ffffff;--portal-border:rgba(15,23,42,0.1);--portal-border-strong:rgba(15,23,42,0.18);--portal-text:#162033;--portal-text-muted:#5a6578;--portal-accent:#1c6ef2;--portal-accent-alt:#0f9d8a;--portal-ink:#0e1628;--portal-danger:#b42318;--portal-shadow:0 20px 60px rgba(15,23,42,0.12);--portal-radius:24px;--portal-font:'Manrope',sans-serif;--portal-mono:'IBM Plex Mono',monospace}[data-theme="dark"]{--portal-bg:#0c0c16;--portal-surface:rgba(26,26,48,0.88);--portal-surface-strong:#1a1a30;--portal-border:rgba(255,255,255,0.08);--portal-border-strong:rgba(255,255,255,0.14);--portal-text:#eaeaf2;--portal-text-muted:#9d9db8;--portal-accent:#818cf8;--portal-accent-alt:#34d399;--portal-ink:#c8c8e0;--portal-danger:#ef4444;--portal-shadow:0 20px 60px rgba(0,0,0,0.5)}[data-theme="dark"] body.portal-body{background:radial-gradient(circle at top left,rgba(99,102,241,0.12),transparent 30%),radial-gradient(circle at top right,rgba(52,211,153,0.08),transparent 24%),linear-gradient(180deg,#0c0c16 0%,#131322 100%)}[data-theme="dark"] .btn-secondary{background:rgba(255,255,255,0.06)}[data-theme="dark"] .portal-footer-auth{background:rgba(13,13,30,0.92)}[data-theme="dark"] .portal-form,[data-theme="dark"] .auth-card{background:var(--portal-surface-strong)}[data-theme="dark"] .portal-form input,[data-theme="dark"] .portal-form textarea,[data-theme="dark"] .portal-form select,[data-theme="dark"] .auth-form input{background:rgba(255,255,255,0.06);border-color:var(--portal-border-strong);color:var(--portal-text)}[data-theme="dark"] .portal-form input::placeholder,[data-theme="dark"] .auth-form input::placeholder{color:var(--portal-text-muted)}#portal-theme-toggle{display:inline-flex;align-items:center;gap:6px;background:var(--portal-surface);border:1px solid var(--portal-border-strong);color:var(--portal-text-muted);border-radius:20px;padding:6px 14px;font-family:var(--portal-font);font-size:0.82rem;font-weight:500;cursor:pointer;transition:background 0.2s,color 0.2s,border-color 0.2s,box-shadow 0.2s;white-space:nowrap}#portal-theme-toggle:hover{background:var(--portal-surface-strong);color:var(--portal-text);border-color:var(--portal-accent);box-shadow:0 0 0 3px rgba(28,110,242,0.12)}#portal-theme-toggle i{font-size:13px;transition:transform 0.4s cubic-bezier(.4,0,.2,1)}[data-theme="dark"] #portal-theme-toggle i{transform:rotate(180deg)}*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100%}body.portal-body{font-family:var(--portal-font);color:var(--portal-text);background:radial-gradient(circle at top left,rgba(28,110,242,0.12),transparent 30%),radial-gradient(circle at top right,rgba(15,157,138,0.12),transparent 24%),linear-gradient(180deg,#f8fafc 0%,#eef2f7 100%)}a{color:inherit;text-decoration:none}.portal-footer,.hero-shell,.section-block,.auth-layout,.tutorial-main{width:min(1200px,calc(100% - 40px));margin:0 auto}.portal-header{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:16px;padding:28px 0 20px;width:100%}.portal-footer{display:flex;align-items:center;justify-content:space-between;padding:22px 0}.portal-brand{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;margin:0 auto}.portal-brand strong{display:block;font-size:1.25rem;line-height:1.2}.portal-brand small,.portal-nav a,.hero-note,.status-card span,.capability-card p,.feature-rail-grid p,.portal-form p,.form-status,.portal-footer,.auth-card small,.auth-links a,.tutorial-track-card p,.journey-list,.tutorial-panel span{color:var(--portal-text-muted)}.portal-brand-mark{width:46px;height:46px;display:inline-flex;align-items:center;justify-content:center;border-radius:14px;background:linear-gradient(135deg,#103d91,#1c6ef2);color:#fff;box-shadow:0 12px 24px rgba(28,110,242,0.25)}.portal-nav{display:flex;gap:18px;align-items:center;justify-content:center;font-size:0.95rem}.portal-install-btn{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.74);border:1px solid var(--portal-border-strong);color:var(--portal-ink);border-radius:999px;padding:10px 16px;font-family:var(--portal-font);font-size:0.9rem;font-weight:700;cursor:pointer;transition:transform 0.18s ease,box-shadow 0.18s ease,background 0.18s ease}.portal-install-btn:hover{transform:translateY(-1px);background:var(--portal-surface-strong);box-shadow:0 12px 28px rgba(28,110,242,0.16)}.portal-install-btn.hidden{display:none}[data-theme="dark"] .portal-install-btn{background:rgba(255,255,255,0.06);color:var(--portal-text)}.portal-user-badge{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;background:rgba(255,255,255,0.72);border:1px solid var(--portal-border-strong);color:var(--portal-ink);font-weight:700;white-space:nowrap}.portal-user-badge i{color:var(--portal-accent)}[data-theme="dark"] .portal-user-badge{background:rgba(255,255,255,0.06);color:var(--portal-text)}.portal-nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:12px 20px;border:1px solid transparent;font-weight:700;transition:transform 0.18s ease,box-shadow 0.18s ease,background 0.18s ease}.portal-nav-cta,.btn-primary{background:linear-gradient(135deg,#1146ac,#1c6ef2);color:#fff;box-shadow:0 12px 28px rgba(28,110,242,0.25)}.portal-nav .portal-nav-cta{color:#fff}.btn-secondary{background:rgba(255,255,255,0.74);border-color:var(--portal-border-strong);color:var(--portal-ink)}.btn-ghost{background:transparent;border-color:var(--portal-border-strong);color:var(--portal-text)}.btn:hover,.portal-nav-cta:hover{transform:translateY(-1px)}.btn-block{width:100%}.hero-shell{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(320px,0.85fr);gap:24px;padding:16px 0 28px}.hero-copy,.hero-panel,.section-block,.auth-card,.auth-copy,.tutorial-track-card{background:var(--portal-surface);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border:1px solid var(--portal-border);border-radius:var(--portal-radius);box-shadow:var(--portal-shadow)}.hero-copy,.hero-panel,.section-block,.auth-card,.auth-copy{padding:32px}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:0.75rem;letter-spacing:0.16em;text-transform:uppercase;color:var(--portal-accent);font-weight:800}.hero-copy h1,.section-heading h1,.section-heading h2,.auth-copy h1{margin:14px 0 16px;font-size:clamp(2rem,4vw,4rem);line-height:1.02;color:var(--portal-ink)}.section-heading h2{font-size:clamp(1.6rem,2.4vw,2.5rem)}.hero-lead,.auth-copy p,.section-heading.compact+p{font-size:1.05rem;line-height:1.7;color:var(--portal-text-muted)}.hero-actions,.inline-actions,.auth-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.hero-status-row,.hero-metric-grid,.capability-grid,.feature-rail-grid,.feedback-grid,.tutorial-track-grid{display:grid;gap:16px}.hero-status-row,.hero-metric-grid,.feature-rail-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.status-card,.hero-metric-grid article,.tutorial-panel article{padding:18px;border-radius:18px;background:rgba(255,255,255,0.84);border:1px solid rgba(15,23,42,0.08)}.status-card strong,.hero-metric-grid strong,.tutorial-panel strong{display:block;margin-top:8px;font-size:1rem;color:var(--portal-ink)}.hero-panel-topline{font-size:0.8rem;letter-spacing:0.14em;text-transform:uppercase;font-weight:800;color:var(--portal-accent-alt);margin-bottom:18px}.hero-note{margin-top:18px;padding-top:18px;border-top:1px solid var(--portal-border)}.section-block{margin:24px auto}.section-heading.compact h2,.section-heading.compact h1{margin-top:8px}.capability-grid,.tutorial-track-grid{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:24px}.capability-card,.tutorial-track-card{padding:22px;border-radius:22px;background:rgba(255,255,255,0.8);border:1px solid rgba(15,23,42,0.08)}.capability-card i{font-size:1.3rem;color:var(--portal-accent)}.capability-card h3,.feature-rail-grid h3,.portal-form h3,.tutorial-track-card h3{margin:14px 0 10px;font-size:1.15rem}.split-layout,.auth-layout{display:grid;gap:24px;grid-template-columns:minmax(0,1.15fr) minmax(320px,0.85fr)}.journey-list{margin:0;padding-left:18px;line-height:1.9}.tutorial-panel{display:grid;gap:12px}.feedback-grid{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:24px}.portal-form{display:grid;gap:14px;padding:24px;background:rgba(255,255,255,0.9);border-radius:22px;border:1px solid rgba(15,23,42,0.08)}.portal-form label,.auth-form label{display:grid;gap:8px;font-size:0.92rem;font-weight:700}.portal-form input,.portal-form textarea,.portal-form select,.auth-form input{width:100%;border-radius:16px;border:1px solid rgba(15,23,42,0.12);background:#fff;padding:13px 14px;font:inherit;color:var(--portal-text)}.portal-form textarea{resize:vertical}.form-status{min-height:22px;font-size:0.9rem}.form-status.is-success{color:var(--portal-accent-alt)}.form-status.is-error,.auth-alert-error{color:var(--portal-danger)}.portal-footer{margin-top:28px;padding-bottom:28px;font-size:0.92rem;border-top:1px solid rgba(15,23,42,0.08)}.portal-footer div{display:flex;gap:14px}.footer-main{display:flex;align-items:center;justify-content:space-between;padding:22px 0 14px}.footer-brand{font-weight:700;color:var(--portal-ink)}.footer-links{display:flex;gap:18px}.footer-bottom{display:flex;align-items:center;justify-content:center;gap:18px;padding:14px 0;font-size:0.82rem;color:var(--portal-text-muted);border-top:1px solid rgba(15,23,42,0.06)}.portal-footer-auth{position:fixed;bottom:0;left:0;right:0;margin:0;padding:0;background:rgba(255,255,255,0.85);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.portal-footer-auth .footer-bottom{border-top:none;padding:10px 0}.auth-screen{display:flex;align-items:center}.auth-layout{min-height:100vh;align-items:center}.auth-points{padding-left:18px;line-height:1.8;color:var(--portal-text-muted)}.auth-card-head{display:flex;gap:12px;align-items:center;margin-bottom:16px}.auth-alert{border-radius:14px;padding:12px 14px;margin-bottom:14px;font-size:0.92rem}.auth-alert-note{background:rgba(17,70,172,0.08);color:#103d91}.auth-form{display:grid;gap:14px}.auth-alert code{font-family:var(--portal-mono);font-size:0.86rem}.tutorial-main{display:grid;gap:24px;padding-bottom:36px}.use-cases-section{background:linear-gradient(160deg,rgba(17,70,172,0.04) 0%,rgba(255,255,255,0) 60%);border-radius:28px;padding:48px 32px}.use-case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:32px}.use-case-card{background:#fff;border:1px solid rgba(15,23,42,0.08);border-radius:20px;padding:26px 24px 22px;display:flex;flex-direction:column;gap:10px;transition:box-shadow 0.2s ease,transform 0.2s ease}.use-case-card:hover{box-shadow:0 12px 32px rgba(17,70,172,0.1);transform:translateY(-2px)}.uc-icon{width:48px;height:48px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;font-size:1.2rem;color:#fff;flex-shrink:0}.uc-icon--edu{background:linear-gradient(135deg,#7c3aed,#a78bfa)}.uc-icon--mktg{background:linear-gradient(135deg,#dc2626,#f97316)}.uc-icon--biz{background:linear-gradient(135deg,#1146ac,#1c6ef2)}.uc-icon--story{background:linear-gradient(135deg,#0f766e,#34d399)}.uc-icon--ux{background:linear-gradient(135deg,#0e7490,#38bdf8)}.uc-icon--hr{background:linear-gradient(135deg,#b45309,#fbbf24)}.uc-category{font-size:0.72rem;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;color:var(--portal-accent)}.use-case-card h3{font-size:1.05rem;margin:0;color:var(--portal-ink);line-height:1.3}.use-case-card p{font-size:0.9rem;color:var(--portal-text-muted);margin:0;line-height:1.6;flex:1}.uc-tools{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}.uc-tools li{display:inline-flex;align-items:center;gap:5px;background:rgba(17,70,172,0.06);color:var(--portal-accent);font-size:0.75rem;font-weight:600;padding:4px 10px;border-radius:999px;border:1px solid rgba(17,70,172,0.12)}.uc-tools li i{font-size:0.7rem}.tut-hero{display:flex;flex-direction:column;align-items:flex-start;gap:28px;padding-top:32px}.tut-hero-copy h1{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.2;font-weight:700;margin:8px 0 12px}.tut-hero-copy p{color:var(--text-muted,#64748b);font-size:1.05rem;max-width:680px}.tut-track-chips{display:flex;flex-wrap:wrap;gap:10px}.tut-chip{display:inline-flex;align-items:center;gap:6px;background:var(--surface-2,#f1f5f9);color:var(--text-primary,#1e293b);border:1px solid var(--border,#e2e8f0);border-radius:999px;padding:6px 14px;font-size:0.85rem;font-weight:500;text-decoration:none;transition:background 0.15s,border-color 0.15s}.tut-chip:hover{background:#dbeafe;border-color:#93c5fd;color:#1d4ed8}.tut-section{display:flex;flex-direction:column;gap:28px}.tut-section-head{display:flex;gap:20px;align-items:flex-start}.tut-section-head h2{font-size:clamp(1.3rem,2.5vw,1.8rem);font-weight:700;margin:4px 0 10px}.tut-label{display:block;font-size:0.78rem;font-weight:700;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-muted,#64748b);margin-bottom:2px}.tut-lead{color:var(--text-muted,#64748b);font-size:1rem;max-width:680px;margin:0}.tut-badge{flex-shrink:0;width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem}.tut-badge--blue{background:#dbeafe;color:#1d4ed8}.tut-badge--green{background:#dcfce7;color:#15803d}.tut-badge--purple{background:#ede9fe;color:#6d28d9}.tut-badge--red{background:#fee2e2;color:#b91c1c}.tut-badge--teal{background:#ccfbf1;color:#0f766e}.tut-badge--orange{background:#ffedd5;color:#c2410c}.tut-badge--indigo{background:#e0e7ff;color:#4338ca}.tut-badge--slate{background:#f1f5f9;color:#475569}.tut-diagram-wrap{background:#1e293b;border-radius:12px;padding:20px;border:1px solid rgba(255,255,255,0.06)}.tut-diagram{width:100%;max-width:900px;display:block;height:auto;border-radius:8px}.tut-diagram--short{max-width:860px}.tut-diagram-caption{margin:10px 0 0;font-size:0.82rem;color:#64748b;text-align:center}.tut-steps{display:flex;flex-direction:column;gap:14px}.tut-step{display:flex;gap:14px;align-items:flex-start;background:var(--surface-2,#f8fafc);border:1px solid var(--border,#e2e8f0);border-radius:10px;padding:14px 16px;font-size:0.95rem}.tut-step-num{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--accent,#1c6ef2);color:#fff;font-size:0.8rem;font-weight:700;display:flex;align-items:center;justify-content:center}.tut-callout{display:flex;gap:14px;align-items:flex-start;background:#fffbeb;border:1px solid #fde68a;border-radius:10px;padding:16px 18px;font-size:0.93rem;color:#1e293b}.tut-callout i{color:#d97706;font-size:1.1rem;flex-shrink:0;margin-top:2px}.tut-callout ul{margin:6px 0 0;padding-left:18px}.tut-callout li{margin-bottom:4px}.tut-try{display:flex;gap:14px;align-items:center;flex-wrap:wrap;background:#eff6ff;border:1px solid #bfdbfe;border-radius:10px;padding:14px 18px;font-size:0.93rem;color:#1e3a8a}.tut-try i{color:#2563eb;font-size:1.1rem;flex-shrink:0}kbd{display:inline-block;background:var(--surface-2,#f1f5f9);border:1px solid var(--border,#cbd5e1);border-bottom-width:2px;border-radius:4px;padding:1px 6px;font-family:monospace;font-size:0.82em;color:var(--text-primary,#1e293b);vertical-align:baseline}.tut-two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px}.tut-subhead{font-size:1rem;font-weight:700;margin:0 0 14px;display:flex;align-items:center;gap:8px;color:var(--text-primary,#1e293b)}.tut-code{background:#1e293b;color:#94a3b8;border-radius:6px;padding:8px 12px;font-family:monospace;font-size:0.82rem;margin:6px 0;border-left:3px solid #3b82f6}.tut-export-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.tut-export-card{background:var(--surface-2,#f8fafc);border:1px solid var(--border,#e2e8f0);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:6px}.tut-export-card h3{font-size:1rem;font-weight:700;margin:0}.tut-export-card p{font-size:0.88rem;color:var(--text-muted,#64748b);margin:0;flex:1}.tut-export-icon{font-size:1.5rem;color:var(--accent,#1c6ef2);margin-bottom:4px}.tut-tag{display:inline-block;background:#dbeafe;color:#1d4ed8;font-size:0.72rem;font-weight:700;padding:3px 8px;border-radius:999px;margin-top:4px;text-transform:uppercase;letter-spacing:0.05em;width:fit-content}.tut-ref-section{background:var(--surface-2,#f8fafc);border-radius:16px;border:1px solid var(--border,#e2e8f0)}.tut-shortcut-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding:8px 0 4px}.tut-shortcut-group h4{font-size:0.85rem;font-weight:700;text-transform:uppercase;letter-spacing:0.07em;color:var(--text-muted,#64748b);margin:0 0 12px}.tut-shortcut-row{display:flex;align-items:center;gap:8px;padding:5px 0;border-bottom:1px solid var(--border,#e2e8f0);font-size:0.875rem}.tut-shortcut-row span{color:var(--text-secondary,#475569)}.tut-cta-section{text-align:center;background:linear-gradient(135deg,#1e3a8a 0%,#1d4ed8 100%);border-radius:20px;color:#fff}.tut-cta-inner{padding:48px 32px}.tut-cta-section h2{font-size:clamp(1.4rem,3vw,2rem);font-weight:800;margin:0 0 12px;color:#fff}.tut-cta-section p{color:rgba(255,255,255,0.82);font-size:1.05rem;margin:0 0 28px}body.tutorial-body{--portal-bg:#0d1422;--portal-surface:rgba(19,29,50,0.96);--portal-surface-strong:#131d30;--portal-border:rgba(255,255,255,0.08);--portal-border-strong:rgba(255,255,255,0.16);--portal-text:#c8d8ee;--portal-text-muted:#7a90b0;--portal-accent:#4d94ff;--portal-accent-alt:#2dd4bf;--portal-ink:#e8f0fe;--portal-danger:#f87171;--portal-shadow:0 20px 60px rgba(0,0,0,0.5);background:#0d1422 !important;color:#c8d8ee}body.tutorial-body .portal-header{background:rgba(13,20,34,0.92);border-bottom:1px solid rgba(255,255,255,0.07)}body.tutorial-body .portal-brand strong{color:#e2e8f0}body.tutorial-body .portal-brand small{color:#8b9ab3}body.tutorial-body .portal-brand-mark{color:#4d94ff}body.tutorial-body .portal-nav a{color:#8b9ab3}body.tutorial-body .portal-nav a:hover{color:#e2e8f0}body.tutorial-body .portal-nav .portal-nav-cta{background:#1c6ef2;color:#fff}body.tutorial-body .portal-nav .portal-nav-cta:hover{background:#2d7ef3}body.tutorial-body 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