.site-header{z-index:40;border-bottom:1px solid var(--ds-cream-200);-webkit-backdrop-filter:blur(18px);position:sticky;top:0}.site-header--cream{background:color-mix(in srgb, var(--ds-cream-50) 92%, transparent);color:var(--ds-ink)}.site-header--biz{background:color-mix(in srgb, var(--ds-biz-bg) 90%, transparent);border-bottom-color:var(--ds-biz-grid);color:var(--ds-biz-text)}.site-header-inner{max-width:1240px;font-family:var(--ds-font-sans);justify-content:space-between;align-items:center;gap:24px;margin:0 auto;padding:14px 32px;display:flex}.site-header-logo{min-width:0;color:inherit;align-items:baseline;gap:12px;text-decoration:none;display:inline-flex}.site-header-wordmark{font-family:var(--ds-font-serif);white-space:nowrap;font-size:20px;font-weight:600}.site-header--cream .site-header-wordmark{color:var(--ds-ink)}.site-header--biz .site-header-wordmark{color:var(--ds-biz-text)}.site-header-wordmark em{font-style:normal;font-weight:500}.site-header--cream .site-header-wordmark em{color:var(--ds-ochre)}.site-header--biz .site-header-wordmark em{color:var(--ds-biz-orange)}.site-header-tagline{white-space:nowrap;font-size:13px}.site-header--cream .site-header-tagline{color:var(--ds-ink-mute)}.site-header--biz .site-header-tagline{color:var(--ds-biz-text-soft)}.site-header-center{flex:auto;justify-content:center;align-items:center;min-width:0;display:flex}.site-header-links{align-items:center;gap:22px;display:flex}.site-header-links a{white-space:nowrap;transition:color var(--ds-duration-fast) var(--ds-ease-in-out);font-size:14px;text-decoration:none}.site-header--cream .site-header-links a{color:var(--ds-ink-soft)}.site-header--cream .site-header-links a:hover{color:var(--ds-ink)}.site-header--biz .site-header-links a{color:var(--ds-biz-text-soft)}.site-header--biz .site-header-links a:hover{color:var(--ds-biz-text)}.site-header .site-header-cta{border-radius:var(--ds-radius-pill);min-height:32px;font:600 12px/1 var(--ds-font-sans);cursor:pointer;white-space:nowrap;transition:background var(--ds-duration-base) var(--ds-ease-in-out), border-color var(--ds-duration-base) var(--ds-ease-in-out), color var(--ds-duration-base) var(--ds-ease-in-out), transform var(--ds-duration-base) var(--ds-ease-in-out);border:1px solid #0000;justify-content:center;align-items:center;padding:0 13px;text-decoration:none;display:inline-flex}.site-header .site-header-workbench{--site-header-workbench-bg:color-mix(in srgb, var(--ds-ochre) 10%, var(--ds-bg-surface));--site-header-workbench-bg-hover:color-mix(in srgb, var(--ds-ochre) 16%, var(--ds-bg-surface));--site-header-workbench-border:color-mix(in srgb, var(--ds-ochre) 38%, var(--ds-border-default));--site-header-workbench-border-hover:color-mix(in srgb, var(--ds-ochre) 54%, var(--ds-border-strong));--site-header-workbench-text:var(--ds-text-primary)}.site-header--cream .site-header-cta{background:color-mix(in srgb, var(--ds-bg-surface) 86%, transparent);border-color:var(--ds-border-default);color:var(--ds-text-primary)}.site-header--cream .site-header-cta:hover{background:var(--ds-bg-surface-raised);border-color:var(--ds-border-strong);transform:translateY(-1px)}.site-header--cream .site-header-links .site-header-workbench{background:var(--site-header-workbench-bg);border-color:var(--site-header-workbench-border);color:var(--site-header-workbench-text)}.site-header--cream .site-header-links .site-header-workbench:hover{background:var(--site-header-workbench-bg-hover);border-color:var(--site-header-workbench-border-hover);color:var(--site-header-workbench-text)}.site-header--biz .site-header-cta{background:var(--ds-biz-orange);border-color:var(--ds-biz-orange);color:var(--ds-biz-on-orange)}.site-header--biz .site-header-cta:hover{background:color-mix(in srgb, var(--ds-biz-orange) 90%, white);border-color:color-mix(in srgb, var(--ds-biz-orange) 90%, white);transform:translateY(-1px)}.site-header--biz .site-header-links .site-header-workbench{--site-header-workbench-bg:color-mix(in srgb, var(--ds-biz-orange) 12%, transparent);--site-header-workbench-bg-hover:color-mix(in srgb, var(--ds-biz-orange) 18%, var(--ds-biz-raised));--site-header-workbench-border:color-mix(in srgb, var(--ds-biz-orange) 45%, var(--ds-biz-grid));--site-header-workbench-border-hover:color-mix(in srgb, var(--ds-biz-orange) 62%, var(--ds-biz-grid));--site-header-workbench-text:var(--ds-biz-text);background:var(--site-header-workbench-bg);border-color:var(--site-header-workbench-border);color:var(--site-header-workbench-text)}.site-header--biz .site-header-links .site-header-workbench:hover{background:var(--site-header-workbench-bg-hover);border-color:var(--site-header-workbench-border-hover);color:var(--site-header-workbench-text)}.site-header-cta:focus-visible,.site-header-theme:focus-visible,.site-header-links a:focus-visible{outline:2px solid var(--ds-focus-ring);outline-offset:2px}.site-header-theme{border-radius:var(--ds-radius-pill);cursor:pointer;width:38px;height:38px;transition:border-color var(--ds-duration-base) var(--ds-ease-in-out), color var(--ds-duration-base) var(--ds-ease-in-out);background:0 0;justify-content:center;align-items:center;display:inline-flex}.site-header--cream .site-header-theme{border:1px solid var(--ds-cream-200);color:var(--ds-ink-soft)}.site-header--cream .site-header-theme:hover{border-color:var(--ds-ink);color:var(--ds-ink)}.site-header--biz .site-header-theme{border:1px solid var(--ds-biz-grid);color:var(--ds-biz-text-soft)}.site-header--biz .site-header-theme:hover{border-color:var(--ds-biz-text);color:var(--ds-biz-text)}.site-header-theme svg{width:18px;height:18px}@media (width<=1040px){.site-header-inner{padding:12px 24px}.site-header-tagline,.site-header-links a[href=\/xin-ai],.site-header-links a[href=\/qihang],:is(.site-header-links .site-header-menu:has(a[href^=\/qihang]),.site-header-links .site-header-menu:has(a[href=\/xin-ai])){display:none}}@media (width<=720px){.site-header-inner{gap:12px;padding:12px 18px}.site-header-links{gap:12px}.site-header-links a{display:none}.site-header-wordmark{font-size:18px}}@media (prefers-reduced-motion:reduce){.site-header-cta,.site-header-theme,.site-header-links a{transition:none!important;transform:none!important}}.site-header-menu{align-items:center;display:inline-flex;position:relative}.site-header-menu-trigger{white-space:nowrap;cursor:pointer;transition:color var(--ds-duration-fast) var(--ds-ease-in-out);font-size:14px;text-decoration:none}.site-header-menu--cream .site-header-menu-trigger{color:var(--ds-ink-soft)}.site-header-menu--cream .site-header-menu-trigger:hover,.site-header-menu--cream.is-open .site-header-menu-trigger{color:var(--ds-ink)}.site-header-menu--biz .site-header-menu-trigger{color:var(--ds-biz-text-soft)}.site-header-menu--biz .site-header-menu-trigger:hover,.site-header-menu--biz.is-open .site-header-menu-trigger{color:var(--ds-biz-text)}.sdm-wrap{z-index:50;padding-top:6px;position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%)}.sdm-dropdown{background:var(--ds-cream-50);border:1px solid var(--ds-cream-200);border-radius:var(--ds-radius-md);width:320px;max-height:70vh;box-shadow:var(--ds-shadow-lg);font-family:var(--ds-font-sans);padding:10px 12px;overflow-y:auto}.site-header-menu--biz .sdm-dropdown{background:var(--ds-biz-surface);border-color:var(--ds-biz-grid);color:var(--ds-biz-text)}.sdm-section{padding:0}.sdm-section-title{letter-spacing:.04em;color:var(--ds-ink-mute);-webkit-user-select:none;user-select:none;padding:6px 6px 4px;font-size:11px;font-weight:600}.site-header-menu--biz .sdm-section-title{color:var(--ds-biz-text-soft)}.sdm-grid{grid-template-columns:1fr 1fr;gap:2px;display:grid}.sdm-divider{background:var(--ds-cream-200);height:1px;margin:6px}.site-header-menu--biz .sdm-divider{background:var(--ds-biz-grid)}.sdm-item{border-radius:var(--ds-radius-sm);color:inherit;cursor:pointer;transition:background var(--ds-duration-fast) var(--ds-ease-in-out);align-items:center;padding:6px 8px;text-decoration:none;display:flex}.sdm-item:hover{background:var(--ds-cream-100)}.site-header-menu--biz .sdm-item:hover{background:var(--ds-biz-raised)}.sdm-item--disabled{opacity:.45;cursor:not-allowed}.sdm-aiq{padding:8px}.sdm-aiq-label{font-family:"Outfit", var(--ds-font-sans);letter-spacing:-.02em;color:var(--ds-apricot-500);font-size:16px;font-weight:800;line-height:1}.sdm-item-label{color:var(--ds-ink);white-space:normal;flex-wrap:wrap;align-items:center;gap:4px;min-width:0;font-size:13px;font-weight:500;line-height:1.35;display:inline-flex}.site-header-menu--biz .sdm-item-label{color:var(--ds-biz-text)}.sdm-badge{font-style:normal;font-family:var(--ds-font-mono);letter-spacing:.1em;border:1px solid var(--ds-ochre);color:var(--ds-ochre);text-transform:uppercase;border-radius:999px;flex-shrink:0;padding:1px 4px;font-size:9px;font-weight:600}.sdm-badge--soon{border-color:var(--ds-ink-mute);color:var(--ds-ink-mute)}.site-header-menu--biz .sdm-badge{border-color:var(--ds-biz-orange);color:var(--ds-biz-orange)}.site-header-menu--biz .sdm-badge--soon{border-color:var(--ds-biz-text-mute);color:var(--ds-biz-text-mute)}.sdm-footer{font-family:var(--ds-font-mono);letter-spacing:.1em;color:var(--ds-ochre);text-align:center;padding:8px 18px 6px;font-size:11px;font-weight:600;text-decoration:none;display:block}.sdm-footer:hover{text-decoration:underline}.site-header-menu--biz .sdm-footer{color:var(--ds-biz-orange)}@media (width<=720px){.site-header-menu{display:none}}