/* 多语言、SEO 内容区与企业级辅助组件 */
.header h1::before { display: none; }
.utility-bar { display:flex; align-items:center; justify-content:space-between; gap:20px; margin-bottom:38px; }
.brand-mark { color:#fff; font-size:1.02rem; font-weight:800; letter-spacing:.04em; text-decoration:none; }
.brand-mark span { margin-left:7px; color:#91caff; font-size:.64rem; letter-spacing:.13em; vertical-align:middle; }
.language-control select { min-width:132px; padding:9px 33px 9px 12px; border:1px solid rgba(210,232,250,.42); border-radius:7px; outline:none; color:#eaf5ff; background:rgba(255,255,255,.1); font:inherit; font-size:.82rem; cursor:pointer; }
.language-control select:focus { border-color:#fff; box-shadow:0 0 0 3px rgba(172,220,255,.24); }
.language-control option { color:#10233c; background:#fff; }
.eyebrow,.section-kicker { margin-bottom:10px; color:var(--blue-700); font-size:.7rem; font-weight:800; letter-spacing:.13em; line-height:1.2; }
.header .eyebrow { color:#c4e5ff; }
.section-intro { max-width:780px; margin:-13px 0 26px; color:var(--ink-600); font-size:.95rem; }
.visually-hidden { position:absolute!important; width:1px!important; height:1px!important; padding:0!important; margin:-1px!important; overflow:hidden!important; clip:rect(0,0,0,0)!important; white-space:nowrap!important; border:0!important; }
.guide-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; }
.guide-grid article { position:relative; padding:27px 24px 25px; overflow:hidden; border:1px solid var(--line); border-radius:var(--radius-md); background:var(--surface); box-shadow:var(--shadow-sm); }
.guide-grid span { display:block; margin-bottom:19px; color:#9cb8d3; font-family:Georgia,serif; font-size:1.65rem; font-weight:700; line-height:1; }
.guide-grid h3 { margin-bottom:9px; color:var(--ink-950); font-size:1.04rem; }
.guide-grid p { color:var(--ink-600); font-size:.88rem; }
.author-link { margin-top:8px; font-size:.82rem; }
.author-link a { color:#d5e9fb; text-underline-offset:3px; }
.noscript-message { position:fixed; right:15px; bottom:15px; z-index:100; max-width:400px; padding:14px; border-radius:8px; color:#5c3400; background:#fff2d6; box-shadow:var(--shadow-md); font-size:.84rem; }
@media (max-width:700px) { .utility-bar { margin-bottom:28px; } .brand-mark span { display:none; } .language-control select { min-width:118px; } .guide-grid { grid-template-columns:1fr; gap:12px; } }