.site-header{position:sticky;top:0;z-index:80;background:color-mix(in srgb,var(--background) 84%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid color-mix(in srgb,var(--line) 80%,transparent);transition:box-shadow .2s,background .2s}.site-header.is-scrolled{background:color-mix(in srgb,var(--background) 94%,transparent);box-shadow:0 12px 32px #0b16240d}
.site-header__inner{width:min(var(--container),calc(100% - 56px));min-height:78px;margin-inline:auto;display:grid;grid-template-columns:auto minmax(220px,520px) auto;align-items:center;gap:22px}.site-brand{display:flex;align-items:center;gap:12px;min-width:0}.site-brand img{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 24px #0b16240f}.site-brand span{min-width:0}.site-brand strong{display:block;font-size:15px}.site-brand small{display:block;color:var(--muted);font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:190px}
.site-search{display:flex;align-items:center;position:relative;min-width:0}.site-search input{width:100%;height:44px;padding:10px 46px 10px 15px;border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px #0b162408}.site-search button{position:absolute;right:6px;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;color:var(--primary)}.site-search button:hover{background:var(--soft)}
.site-header__actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;min-width:max-content}.header-action{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:9px 12px;border-radius:10px;font-size:11px;font-weight:800;transition:background .18s,color .18s,transform .18s}.header-action:hover{transform:translateY(-1px)}.header-action--login{color:var(--text)}.header-action--login:hover{background:#fff}.header-action--login i{color:var(--primary)}.header-action--register{background:var(--primary);color:#fff}.header-action--register:hover{filter:brightness(.96)}
.account-menu{position:relative}.account-menu>summary{display:flex;align-items:center;gap:9px;min-height:44px;padding:5px 9px 5px 5px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;list-style:none}.account-menu>summary::-webkit-details-marker{display:none}.account-menu>summary::marker{content:""}.account-avatar{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-size:12px;font-weight:900}.account-summary-copy{min-width:0}.account-summary-copy strong,.account-summary-copy small{display:block;max-width:140px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.account-summary-copy strong{font-size:11px}.account-summary-copy small{color:var(--muted);font-size:9px}.account-menu>summary>i{color:var(--muted);font-size:9px;transition:transform .18s}.account-menu[open]>summary>i{transform:rotate(180deg)}.account-menu__panel{position:absolute;right:0;top:calc(100% + 8px);z-index:140;width:270px;padding:8px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow-lg)}.account-menu__panel>a,.account-menu__panel button{display:flex;align-items:center;gap:11px;width:100%;padding:10px;border-radius:9px;text-align:left}.account-menu__panel>a:hover,.account-menu__panel button:hover{background:var(--soft)}.account-menu__panel i{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--soft);color:var(--primary);font-size:12px}.account-menu__panel span{min-width:0}.account-menu__panel strong,.account-menu__panel small{display:block}.account-menu__panel strong{font-size:11px}.account-menu__panel small{margin-top:2px;color:var(--muted);font-size:9px}.account-menu__panel form{margin-top:4px;padding-top:4px;border-top:1px solid var(--line)}
@media(max-width:940px){.site-header__inner{width:calc(100% - 32px);grid-template-columns:1fr auto;gap:12px;padding:10px 0}.site-search{grid-column:1/-1;grid-row:2}.site-brand small{max-width:150px}.header-action{padding:9px 10px}.account-summary-copy{display:none}.account-menu__panel{right:0}}
@media(max-width:560px){.site-header__inner{width:calc(100% - 24px)}.site-brand span small{display:none}.header-action span{display:none}.header-action{width:40px;padding:0;justify-content:center}.site-search input{height:42px}.account-menu>summary{padding:4px}.account-menu>summary>i{display:none}.account-menu__panel{width:min(270px,calc(100vw - 24px))}}