*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#f8f9fa;--surface:#fff;--border:#e8eaed;--text:#1a1a2e;--text2:#6b7280;--accent:#2563eb;--radius:12px;--font:-apple-system,BlinkMacSystemFont,'Segoe UI','Noto Sans SC',sans-serif}
html{font-size:16px}body{font-family:var(--font);background:var(--bg);color:var(--text)}
a{color:var(--accent);text-decoration:none}
.site-header{background:var(--surface);border-bottom:1px solid var(--border);padding:14px 0;position:sticky;top:0;z-index:10}
.header-inner{max-width:960px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.site-logo{font-size:1.1rem;font-weight:700;color:var(--text)}.site-logo span{color:var(--accent)}
.header-links{display:flex;gap:16px;font-size:.85rem}.header-links a{color:var(--text2)}
.page-hero{max-width:960px;margin:0 auto;padding:40px 24px 20px}
.page-hero h1{font-size:1.6rem;font-weight:700;margin-bottom:6px}
.page-hero p{color:var(--text2);font-size:.92rem}
.article-grid{max-width:960px;margin:0 auto;padding:10px 24px 40px;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.article-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px 22px;transition:all .2s}
.article-card:hover{border-color:#2563eb;box-shadow:0 4px 20px rgba(37,99,235,.08);transform:translateY(-2px)}
.card-category{display:inline-block;background:rgba(37,99,235,.08);color:#2563eb;padding:2px 10px;border-radius:12px;font-size:.72rem;font-weight:500;margin-bottom:10px}
.card-title{font-size:1rem;font-weight:600;margin-bottom:8px;line-height:1.4}
.card-title a{color:#1a1a2e}.card-title a:hover{color:#2563eb}
.card-summary{color:#6b7280;font-size:.85rem;line-height:1.6;margin-bottom:10px}
.card-meta{color:#6b7280;font-size:.76rem}
.page-footer{text-align:center;padding:30px 24px;color:#6b7280;font-size:.82rem;border-top:1px solid #e8eaed;background:#fff}
@media(max-width:640px){.article-grid{grid-template-columns:1fr}}