.app-header[data-v-4ff72aeb]{display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-xl);height:72px;background:var(--glass-bg);background-image:var(--glass-frost);-webkit-backdrop-filter:blur(var(--glass-blur-heavy)) saturate(var(--glass-saturate));backdrop-filter:blur(var(--glass-blur-heavy)) saturate(var(--glass-saturate));border-bottom:1px solid var(--border-subtle);box-shadow:var(--glass-edge);position:fixed;top:0;left:0;right:0;z-index:100;overflow:hidden}.header-glow-line[data-v-4ff72aeb]{position:absolute;bottom:0;left:0;right:0;height:1px;background:var(--glow-line);pointer-events:none}.header-left[data-v-4ff72aeb]{display:flex;align-items:center;gap:var(--space-2xl)}.brand[data-v-4ff72aeb]{display:flex;align-items:center;gap:var(--space-sm);text-decoration:none;color:var(--text-primary);font-family:var(--font-display);font-size:var(--text-lg);font-weight:600;letter-spacing:var(--tracking-tight)}.brand-logo[data-v-4ff72aeb]{height:28px;width:auto;object-fit:contain;filter:drop-shadow(0 0 6px rgba(0,64,152,.2))}.nav-links[data-v-4ff72aeb]{display:flex;gap:var(--space-xs)}.nav-item[data-v-4ff72aeb]{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) 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var(--border-subtle);border-radius:var(--radius-pill);background:transparent;color:var(--text-secondary);cursor:pointer;font-size:16px;position:relative}.theme-toggle[data-v-4ff72aeb]:before{content:"";position:absolute;top:-6px;right:-6px;bottom:-6px;left:-6px;pointer-events:none}.theme-toggle[data-v-4ff72aeb]:hover{color:var(--accent);border-color:var(--accent);background:var(--accent-muted);box-shadow:0 0 12px #2e7bf626}.user-area[data-v-4ff72aeb]{display:flex;align-items:center;gap:var(--space-sm)}.user-name[data-v-4ff72aeb]{font-size:var(--text-sm);color:var(--text-secondary);font-weight:450;max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.logout-btn[data-v-4ff72aeb]{display:flex;align-items:center;justify-content:center;width:40px;height:40px;min-width:var(--touch-min);min-height:var(--touch-min);border:1px solid transparent;border-radius:var(--radius-pill);background:transparent;color:var(--text-tertiary);cursor:pointer;font-size:16px;position:relative}.logout-btn[data-v-4ff72aeb]:before{content:"";position:absolute;top:-6px;right:-6px;bottom:-6px;left:-6px}.logout-btn[data-v-4ff72aeb]:hover{color:var(--color-danger);border-color:var(--color-danger);background:var(--color-danger-bg);box-shadow:0 0 12px #ea4d5226}.login-link[data-v-4ff72aeb]{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 var(--space-lg);border:1px solid var(--border-subtle);border-radius:var(--radius-pill);color:var(--text-secondary);font-size:var(--text-sm);font-weight:600}.login-link[data-v-4ff72aeb]:hover{border-color:var(--accent);background:var(--accent-muted);color:var(--accent)}@media (max-width: 768px){.app-header[data-v-4ff72aeb]{padding:0 var(--space-lg)}.brand-text[data-v-4ff72aeb]{display:none}.nav-links[data-v-4ff72aeb]{gap:0}.nav-item span[data-v-4ff72aeb]{display:none}.nav-item[data-v-4ff72aeb]{padding:var(--space-sm) var(--space-sm)}.sub-tab span[data-v-4ff72aeb]{display:none}.sub-tab[data-v-4ff72aeb]{padding:var(--space-sm)}.kb-selector[data-v-4ff72aeb],.user-name[data-v-4ff72aeb]{display:none}}.site-footer[data-v-09b15c6d]{margin-top:4rem;padding:3rem 0 2rem;background:var(--surface-1);border-top:1px solid var(--border-color)}.footer-inner[data-v-09b15c6d]{max-width:1200px;margin:0 auto;padding:0 var(--content-padding);display:flex;flex-direction:column;gap:2rem}.footer-grid[data-v-09b15c6d]{display:grid;gap:1.75rem;grid-template-columns:repeat(5,minmax(0,1fr))}.footer-column[data-v-09b15c6d]{display:flex;flex-direction:column;gap:.8rem}.footer-column h3[data-v-09b15c6d]{margin:0 0 .2rem;font-size:1rem;font-family:var(--font-body)}.footer-column a[data-v-09b15c6d],.footer-contact-item span[data-v-09b15c6d]{color:var(--text-secondary)}.footer-contact[data-v-09b15c6d]{gap:1rem;min-width:260px}.footer-contact-item[data-v-09b15c6d]{display:flex;flex-direction:column;gap:.25rem}.footer-terms[data-v-09b15c6d]{display:flex;justify-content:space-between;gap:1rem;padding-top:1.2rem;border-top:1px solid var(--border-color);color:var(--text-tertiary);font-size:.84rem}.footer-terms>div[data-v-09b15c6d]{display:flex;flex-wrap:wrap;gap:1rem}.footer-terms a[data-v-09b15c6d]{color:inherit}@media (max-width: 960px){.footer-grid[data-v-09b15c6d]{grid-template-columns:1fr 1fr 1fr}.footer-terms[data-v-09b15c6d]{flex-direction:column}}@media (max-width: 640px){.footer-grid[data-v-09b15c6d]{grid-template-columns:repeat(4,1fr);gap:.75rem}.footer-column[data-v-09b15c6d]:first-child,.footer-column[data-v-09b15c6d]:nth-child(2),.footer-column[data-v-09b15c6d]:nth-child(3),.footer-column[data-v-09b15c6d]:nth-child(4){order:1;text-align:center}.footer-contact[data-v-09b15c6d]{order:2;grid-column:span 4;display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-left:40px;margin-top:10px}.footer-contact-item strong[data-v-09b15c6d]{display:block;font-size:.75rem;color:var(--text-primary);margin-bottom:.3rem}.footer-contact-item span[data-v-09b15c6d]{font-size:.78rem;line-height:1.5}.footer-column h3[data-v-09b15c6d]{font-size:.75rem}.footer-column a[data-v-09b15c6d]{font-size:.68rem}}:root{--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.25rem;--text-xl: 1.563rem;--text-2xl: 1.953rem;--text-3xl: 2.441rem;--leading-tight: 1.25;--leading-normal: 1.5;--leading-relaxed: 1.65;--leading-loose: 1.75;--tracking-tight: -.02em;--tracking-normal: 0;--tracking-wide: .04em;--font-display: "Literata", "Noto Serif SC", serif;--font-body: "Inter", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "SF Mono", monospace;--space-xxs: 2px;--space-xs: 4px;--space-sm: 8px;--space-md: 12px;--space-lg: 16px;--space-xl: 24px;--space-2xl: 32px;--space-3xl: 48px;--space-4xl: 64px;--space-5xl: 96px;--content-width: 960px;--content-padding: var(--space-xl);--line-length: 68ch;--radius-xs: 8px;--radius-sm: 12px;--radius-md: 16px;--radius-lg: 24px;--radius-xl: 32px;--radius-pill: 999px;--color-success: #18a572;--color-warning: #ef9b28;--color-danger: #ea4d52;--color-info: #2e7bf6;--color-success-bg: rgba(24, 165, 114, .14);--color-warning-bg: rgba(239, 155, 40, .14);--color-danger-bg: rgba(234, 77, 82, .14);--color-info-bg: rgba(46, 123, 246, .14);--color-visual: #6d4cf5;--brand-primary: #004098;--brand-primary-light: #1a5cc0;--brand-primary-bg: rgba(0, 64, 152, .12);--touch-min: 44px;--glass-blur: 24px;--glass-blur-heavy: 40px;--glass-saturate: 220%;--glass-mix: 78%;--glass-noise-opacity: .06;--glass-frost: linear-gradient( 135deg, rgba(255,255,255,.1) 0%, rgba(255,255,255,.02) 35%, transparent 60%, rgba(255,255,255,.04) 100% );--glass-frost-heavy: linear-gradient( 135deg, rgba(255,255,255,.16) 0%, rgba(255,255,255,.04) 35%, transparent 60%, rgba(255,255,255,.06) 100% );--glass-edge: inset 0 0 0 1px rgba(255,255,255,.08), inset 0 1px 0 rgba(255,255,255,.06);--glass-edge-strong: inset 0 0 0 1px rgba(255,255,255,.12), inset 0 1px 0 rgba(255,255,255,.1), inset 0 -1px 0 rgba(0,0,0,.08);--elevation-1: 0 10px 24px rgba(13, 20, 38, .08);--elevation-2: 0 20px 50px rgba(13, 20, 38, .12);--elevation-3: 0 35px 90px rgba(13, 20, 38, .18);--ease-out: cubic-bezier(.22, 1, .36, 1);--ease-spring: cubic-bezier(.2, .9, .2, 1.15);--btn-gradient: linear-gradient(180deg, rgba(255,255,255,.12) 0%, transparent 50%, rgba(0,0,0,.08) 100%);--btn-shine: linear-gradient(135deg, rgba(255,255,255,.18) 0%, transparent 40%);--btn-glow: 0 0 20px rgba(46, 123, 246, .3), 0 0 60px rgba(46, 123, 246, .1);--btn-glow-hover: 0 0 24px rgba(46, 123, 246, .4), 0 0 80px rgba(46, 123, 246, .15);--btn-inset: inset 0 1px 0 rgba(255,255,255,.1), inset 0 -1px 0 rgba(0,0,0,.15);--btn-inset-light: inset 0 1px 0 rgba(255,255,255,.5), inset 0 -1px 0 rgba(0,0,0,.06);--grid-size: 32px;--shimmer-gradient: linear-gradient( 105deg, transparent 30%, rgba(255,255,255,.25) 45%, rgba(255,255,255,.4) 50%, rgba(255,255,255,.25) 55%, transparent 70% );--glow-line: linear-gradient( 90deg, transparent 0%, rgba(46, 123, 246, 0) 10%, rgba(46, 123, 246, .35) 35%, rgba(109, 76, 245, .25) 50%, rgba(46, 123, 246, .35) 65%, rgba(46, 123, 246, 0) 90%, transparent 100% )}:root,[data-theme=dark]{color-scheme:dark light;--surface-0: #11192a;--surface-1: #162033;--surface-2: #1b2740;--surface-3: #22314f;--bg-page: var(--surface-0);--bg-surface: color-mix(in srgb, var(--surface-1) var(--glass-mix), transparent);--bg-elevated: var(--surface-2);--bg-hover: var(--surface-3);--bg-overlay: rgba(17, 25, 42, .85);--text-primary: #f1f5fe;--text-secondary: #cfd8e8;--text-tertiary: #9ea8be;--text-placeholder: #9ea8be;--border-color: rgba(144, 164, 202, .25);--border-subtle: rgba(144, 164, 202, .16);--border-default: var(--border-color);--accent: #3b82f6;--accent-hover: #60a5fa;--accent-muted: rgba(59, 130, 246, .16);--accent-on: #ffffff;--grid-line: rgba(144, 164, 202, .1);--hero-gradient: radial-gradient(circle at top center, rgba(46, 123, 246, .2) 0%, rgba(17, 25, 42, 0) 62%);--elevation-glow: 0 0 40px rgba(46, 123, 246, .15);--glass-bg: color-mix(in srgb, var(--surface-1) var(--glass-mix), transparent);--glass-border: rgba(144, 164, 202, .22);--glass-border-hover: rgba(144, 164, 202, .35);--glass-shine: linear-gradient(135deg, rgba(255, 255, 255, .08) 0%, transparent 50%, rgba(255, 255, 255, .03) 100%);--color-visual: #6d4cf5;--elevation-1: 0 10px 24px rgba(13, 20, 38, .25);--elevation-2: 0 20px 50px rgba(13, 20, 38, .35);--elevation-3: 0 35px 90px rgba(13, 20, 38, .45)}[data-theme=light]{color-scheme:light;--surface-0: #f4f7fb;--surface-1: #ffffff;--surface-2: #ebf0f7;--surface-3: #e0e8f3;--bg-page: var(--surface-0);--bg-surface: color-mix(in srgb, var(--surface-1) var(--glass-mix), transparent);--bg-elevated: var(--surface-1);--bg-hover: var(--surface-2);--bg-overlay: rgba(244, 247, 251, .85);--text-primary: #0d1421;--text-secondary: #3b4860;--text-tertiary: #5e6b82;--text-placeholder: #5e6b82;--border-color: rgba(104, 122, 157, .3);--border-subtle: rgba(104, 122, 157, .18);--border-default: var(--border-color);--accent: #1d58c7;--accent-hover: #1747a3;--accent-muted: rgba(29, 88, 199, .1);--accent-on: #ffffff;--grid-line: rgba(104, 122, 157, .12);--hero-gradient: radial-gradient(circle at top center, rgba(46, 123, 246, .18) 0%, rgba(244, 247, 251, 0) 62%);--elevation-glow: 0 0 40px rgba(46, 123, 246, .08);--glass-bg: color-mix(in srgb, var(--surface-1) var(--glass-mix), transparent);--glass-border: rgba(104, 122, 157, .22);--glass-border-hover: rgba(104, 122, 157, .4);--glass-shine: linear-gradient(135deg, rgba(255, 255, 255, .85) 0%, transparent 50%, rgba(255, 255, 255, .4) 100%);--color-visual: #6d4cf5;--elevation-1: 0 10px 24px rgba(13, 20, 38, .08);--elevation-2: 0 20px 50px rgba(13, 20, 38, .12);--elevation-3: 0 35px 90px rgba(13, 20, 38, .18);--glass-noise-opacity: .03}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}body{font-family:var(--font-body);font-size:var(--text-base);line-height:var(--leading-relaxed);color:var(--text-primary);background:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px),var(--hero-gradient),var(--bg-page);background-size:var(--grid-size) var(--grid-size),var(--grid-size) 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reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@media (max-width: 768px){:root{--content-width: 100%;--content-padding: var(--space-lg)}.main-content{padding:var(--space-lg) var(--space-lg) var(--space-2xl)}.test-layout{grid-template-columns:1fr}.search-bar,.agent-input-area{flex-direction:column}.search-btn,.cancel-btn,.agent-btn{width:100%;justify-content:center}h1{font-size:var(--text-2xl)}h2{font-size:var(--text-xl)}.login-card{max-width:100%;padding:var(--space-2xl) var(--space-xl)}.chat-bubble{max-width:92%}}#app-shell[data-v-a4a8eaae]{min-height:100vh;display:flex;flex-direction:column}.main-content[data-v-a4a8eaae]{flex:1;margin:0 auto;padding:72px var(--content-padding) 0;padding-top:calc(72px + var(--space-2xl));max-width:1200px;width:100%}.help-center-shell .main-content[data-v-a4a8eaae]{max-width:none;margin:0;padding:72px 0 0;background:transparent}.help-product-shell 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