:root{--color-primary:#2563eb;--color-primary-light:#3b82f6;--color-primary-dark:#1d4ed8;--color-primary-bg:#eff6ff;--color-secondary:#059669;--color-secondary-light:#10b981;--color-secondary-bg:#ecfdf5;--color-accent:#d97706;--color-accent-light:#f59e0b;--color-accent-bg:#fffbeb;--color-bg:#f8fafc;--color-bg-white:#fff;--color-bg-muted:#f1f5f9;--color-text:#1e293b;--color-text-secondary:#64748b;--color-text-muted:#94a3b8;--color-border:#e2e8f0;--color-border-light:#f1f5f9;--color-success:#059669;--color-warning:#d97706;--color-error:#dc2626;--color-info:#2563eb;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;--font-size-title:28px;--font-size-section:22px;--font-size-card-title:18px;--font-size-body:16px;--font-size-secondary:14px;--font-size-caption:12px;--font-weight-title:600;--font-weight-section:600;--font-weight-card:500;--font-weight-body:400;--space-xs:4px;--space-sm:8px;--space-md:12px;--space-lg:16px;--space-xl:24px;--space-2xl:32px;--space-3xl:48px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--shadow-card:0 1px 3px #00000014;--shadow-card-hover:0 4px 12px #0000001a;--shadow-modal:0 8px 24px #0000001f;--header-height:56px;--header-height-mobile:48px;--sidebar-width:232px;--sidebar-collapsed:64px;--voice-panel-width:380px;--bottom-nav-height:56px;--content-max-width:1440px;--bp-mobile:767px;--bp-tablet:768px;--bp-desktop:1200px;--font-size-scale:1;--contrast-mode:normal}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-size:calc(var(--font-size-body) * var(--font-size-scale));-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}button{cursor:pointer;font-family:inherit}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.demo-badge{align-items:center;gap:var(--space-xs);font-size:var(--font-size-caption);color:var(--color-accent);background:var(--color-accent-bg);border-radius:var(--radius-sm);padding:2px 8px;font-weight:500;display:inline-flex}.status-unavailable{align-items:center;gap:var(--space-xs);font-size:var(--font-size-caption);color:var(--color-text-muted);background:var(--color-bg-muted);border-radius:var(--radius-sm);padding:2px 8px;display:inline-flex}@media (max-width:767px){:root{--font-size-title:22px;--font-size-section:18px;--font-size-card-title:16px;--font-size-body:16px;--font-size-secondary:13px}}