:root{--product-header-height:72px;--product-header-gutter:40px}.product-header{position:relative;z-index:30;flex-shrink:0;border-bottom:1px solid var(--brand-border);background:var(--brand-page);color:var(--brand-foreground);font:600 14px/1.4 var(--brand-font)}.product-header__inner{position:relative;width:min(var(--brand-content-width),calc(100% - var(--product-header-gutter) * 2));height:calc(var(--product-header-height) - 1px);margin-inline:auto;display:flex;align-items:center;gap:32px}.product-header__brand{display:inline-flex;align-items:center;flex-shrink:0;min-height:44px;text-decoration:none}.product-header__brand .ddc-brand{font-size:15px;line-height:1}.product-header__navigation{display:flex;flex:1;min-width:0}.product-header__actions,.product-header__desktop-actions{display:flex;align-items:center;flex-shrink:0;gap:12px}.product-header__actions{margin-left:auto}.product-header .theme-toggle,.product-header__control{box-sizing:border-box;display:inline-flex;flex-shrink:0;align-items:center;justify-content:center;gap:8px;min-width:44px;height:44px;min-height:44px;padding:0 10px;border:1px solid var(--brand-border);border-radius:var(--brand-radius);background:var(--brand-surface);color:var(--brand-secondary);font:600 13px/1 var(--brand-font);text-decoration:none;white-space:nowrap;cursor:pointer}.product-header .language-select{gap:6px;font-family:var(--brand-mono);font-size:12px}.product-header__control:hover{background:var(--brand-panel);color:var(--brand-foreground)}.product-header__control:disabled{opacity:.6;cursor:wait}.product-header__control--primary{padding-inline:14px;border-color:transparent;background:var(--brand-cyan);color:var(--brand-navy-950)}.product-header__control--primary:hover{background:var(--brand-cyan-hover);color:var(--brand-navy-950)}.product-header :is(a,button):focus-visible{outline:2px solid var(--brand-action);outline-offset:3px}.product-header__menu,.product-header__menu-toggle{display:none}@media (max-width:959px){.product-header__inner{gap:16px}.product-header__brand .ddc-brand{font-size:13px}.product-header__desktop-actions,.product-header__navigation{display:none}.product-header__actions{gap:6px}.product-header__menu-toggle{display:inline-flex}.product-header__menu{position:absolute;display:grid;left:0;right:0;top:calc(100% + 8px);max-height:calc(100dvh - var(--product-header-height) - 24px);overflow-y:auto;padding:12px;border:1px solid var(--brand-border);background:var(--brand-page);box-shadow:0 14px 32px #00192a1f}.product-header__menu nav{display:grid}.product-header__menu a{display:flex;justify-content:space-between;align-items:center;min-height:46px;padding:10px 12px;color:var(--brand-foreground);font-size:14px;text-decoration:none}.product-header__menu a:hover{background:var(--brand-surface);color:var(--brand-action)}}@media (max-width:767px){:root{--product-header-height:68px;--product-header-gutter:20px}.product-header__inner{gap:10px}.product-header .theme-toggle{padding-inline:8px}}@media (max-width:420px){.product-header__brand .ddc-brand{font-size:12px}}