:root{--primary:#1a73e8;--primary-light:#e8f0fe;--bg:#f8f9fa;--card-bg:#fff;--text:#202124;--text-secondary:#5f6368;--border:#e8eaed;--shadow:0 1px 3px rgba(0,0,0,.08);--shadow-hover:0 4px 12px rgba(0,0,0,.12);--radius:12px}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}
.container{max-width:960px;margin:0 auto;padding:0 20px;flex:1}
.header{background:linear-gradient(135deg,#1a73e8,#0d47a1);color:#fff;padding:48px 0 40px;margin-bottom:32px}
.header h1{font-size:28px;font-weight:700;margin-bottom:8px}
.header p{opacity:.9;font-size:15px}
.header .meta{margin-top:16px;display:flex;gap:16px;font-size:13px;opacity:.8}
.day-list{display:grid;gap:16px;margin-bottom:40px}
.day-card{background:var(--card-bg);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:all .2s;cursor:pointer;text-decoration:none;color:inherit;display:block;border:1px solid var(--border)}
.day-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:var(--primary)}
.day-card .date{font-size:13px;color:var(--primary);font-weight:600;margin-bottom:6px}
.day-card .title{font-size:18px;font-weight:600;margin-bottom:8px}
.day-card .summary{font-size:14px;color:var(--text-secondary);line-height:1.5}
.day-card .tags{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}
.tag{font-size:12px;padding:2px 10px;border-radius:12px;background:var(--primary-light);color:var(--primary)}
.detail-content{background:var(--card-bg);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);margin-bottom:40px;border:1px solid var(--border)}
.detail-content h2{font-size:22px;margin:28px 0 12px}
.detail-content h2:first-child{margin-top:0}
.detail-content h3{font-size:18px;margin:20px 0 10px}
.detail-content p{margin-bottom:14px;font-size:15px;line-height:1.8}
.detail-content ul,.detail-content ol{margin:12px 0 16px 24px}
.detail-content li{margin-bottom:6px;font-size:15px;line-height:1.7}
.detail-content blockquote{border-left:4px solid var(--primary);padding:12px 20px;margin:16px 0;background:var(--primary-light);border-radius:0 8px 8px 0;font-style:italic}
.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);text-decoration:none;font-size:14px;margin-bottom:20px;font-weight:500}
.back-link:hover{text-decoration:underline}
.timeline{position:relative;padding-left:24px;margin:20px 0}
.timeline::before{content:"";position:absolute;left:6px;top:4px;bottom:4px;width:2px;background:var(--border)}
.timeline-item{position:relative;margin-bottom:16px}
.timeline-item::before{content:"";position:absolute;left:-21px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--primary);border:2px solid #fff;box-shadow:0 0 0 2px var(--primary-light)}
.timeline-time{font-size:13px;color:var(--primary);font-weight:600}
.timeline-desc{font-size:14px;color:var(--text-secondary);margin-top:2px}
.footer{text-align:center;padding:32px 0;font-size:13px;color:var(--text-secondary);border-top:1px solid var(--border);margin-top:auto}
@media(max-width:640px){.header{padding:32px 0 28px}.header h1{font-size:22px}.detail-content{padding:20px}.day-card{padding:18px}}