:root{--yellow: #ffe566;--yellow-deep: #f5c518;--bg: #fffdf6;--text: #1f1f1f;--muted: #666;--line: #eee6c8;--card: #ffffff}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}.wrap{width:min(1080px,calc(100% - 40px));margin:0 auto}.site-header{position:sticky;top:0;z-index:10;background:#fffdf6eb;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.site-header .inner,.site-footer .inner{display:flex;align-items:center;justify-content:space-between;min-height:64px}.brand{display:flex;align-items:center;gap:10px;font-weight:700}.brand img{width:36px;height:36px;border-radius:50%}.nav{display:flex;gap:22px;color:var(--muted);font-size:14px}.hero{padding:72px 0 48px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}.hero h1{margin:0 0 16px;font-size:40px;line-height:1.25}.hero p{margin:0 0 28px;color:var(--muted);font-size:16px;line-height:1.8}.hero-logo{width:min(280px,70vw);justify-self:end;background:var(--yellow);border-radius:32px}.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:22px;background:var(--yellow-deep);color:#222;font-weight:600}.section{padding:28px 0 56px}.section h2{margin:0 0 24px;font-size:24px}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px}.card h3{margin:0 0 8px;font-size:16px}.card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}.about{background:#fff8d6;border:1px solid var(--line);border-radius:16px;padding:24px;line-height:1.8;color:#444}.site-footer{border-top:1px solid var(--line);padding:22px 0 32px;color:var(--muted);font-size:13px}.site-footer a{margin-left:16px}@media(max-width:800px){.hero,.grid{grid-template-columns:1fr}.hero-logo{justify-self:center}.nav{display:none}}