.site-header{display:block;height:auto;min-height:0;padding:0;margin:0;width:100%;background:var(--paper,#f4f2e9);border-bottom:1px solid var(--line,#d5d7cd);color:var(--ink,#191b19);font:14px/1.4 Arial,"Microsoft YaHei","PingFang SC",sans-serif;letter-spacing:0;z-index:4}
.site-header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;width:min(1280px,calc(100vw - 96px));min-height:64px;margin:auto}
.site-brand{display:inline-flex;align-items:center;gap:12px;flex:none;font-size:20px;font-weight:900;letter-spacing:-.6px;line-height:1.25;text-decoration:none;color:inherit}
.site-brand small{display:block;font-size:11px;letter-spacing:2px;margin-top:3px}
.site-brand-mark{display:grid;place-items:center;position:relative;width:43px;height:43px;background:var(--ink,#191b19);color:var(--paper,#f4f2e9);font-size:30px;line-height:1}
.site-brand-mark span{position:absolute;right:-7px;top:-10px;font-size:19px;color:var(--gold,#f1d264)}
.site-header .site-nav{display:flex;align-items:center;justify-content:flex-end;gap:clamp(12px,2vw,30px);min-width:0;font-size:14px}
.site-nav a{display:inline-flex;align-items:center;flex:none;min-height:44px;padding:4px 0;border-bottom:2px solid transparent;color:inherit;text-decoration:none;white-space:nowrap}
.site-nav a:hover,.site-nav a[aria-current=page]{border-color:var(--ink,#191b19)}
.site-header a:focus-visible{outline:3px solid #b8681f;outline-offset:3px}
@media(max-width:900px){.site-header-inner{width:calc(100vw - 48px);gap:14px}.site-header .site-nav{gap:14px;font-size:13px}}
@media(max-width:700px){.site-header-inner{width:calc(100vw - 36px);display:block;padding-top:12px}.site-brand{min-height:44px;font-size:17px}.site-brand-mark{width:36px;height:36px;font-size:26px}.site-brand small{font-size:9px}.site-header .site-nav{display:flex;justify-content:flex-start;gap:20px;width:100%;max-width:none;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;white-space:nowrap;margin-top:7px}.site-nav a{min-height:43px}}

/* Keep navigation in one row when vertical room is scarce. */
@media(max-height:700px){.site-header-inner{min-height:56px;display:flex;padding-top:0;gap:18px}.site-brand{font-size:17px}.site-brand-mark{width:34px;height:34px;font-size:25px}.site-header .site-nav{flex:1;justify-content:flex-start;overflow-x:auto;overflow-y:hidden;margin-top:0;gap:16px;padding:3px;scrollbar-width:thin}}
.site-header{flex-shrink:0}

/* 手写体品牌字：和首页启动页同一套字形与字号比例，启动动画落位后可以直接接住 */
@font-face{font-family:"layz-hand";src:url("/static/fonts/layz-hand-700.woff2?v=8a70e2d0e6c6") format("woff2");font-weight:700;font-style:normal;font-display:swap}
.site-brand-text{display:block;min-width:0}
.brand-hand{display:inline-flex;align-items:baseline;font-family:"layz-hand","Kalam","Segoe Script",cursive;font-weight:700;font-size:1.18em;line-height:1;letter-spacing:.005em}
.brand-hand i{font-style:normal;display:inline-block}
.brand-hand .brand-dot{color:#0099ff}