* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; color: #222; background: #f6f7f9; }
a { color: #1565c0; text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.topbar { background: #fff; border-bottom: 1px solid #e5e5e5; }
.topbar-in { display: flex; align-items: center; justify-content: space-between; min-height: 52px; flex-wrap: wrap; gap: 8px; }
.brand { font-size: 20px; font-weight: 700; color: #111; }
.topbar nav { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.topbar nav .me { color: #666; font-size: 13px; }
main { padding: 24px 16px 40px; }
h2 { margin: 4px 0 16px; }
h3 { margin: 0 0 12px; }
.btn { display: inline-block; background: #1565c0; color: #fff; border: none; border-radius: 6px; padding: 10px 18px; font-size: 15px; cursor: pointer; }
.btn:hover { text-decoration: none; background: #0d47a1; }
.btn.ghost { background: #fff; color: #1565c0; border: 1px solid #1565c0; }
.btn.small { padding: 6px 12px; font-size: 14px; }
.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.flash.ok { background: #e8f5e9; color: #2e7d32; }
.flash.error { background: #ffebee; color: #c62828; }
.flash.warn { background: #fff8e1; color: #e65100; }
.hero { text-align: center; padding: 36px 0 8px; }
.hero h1 { font-size: 36px; margin: 0 0 8px; }
.hero .sub { color: #555; font-size: 16px; max-width: 620px; margin: 0 auto 20px; }
.cta { display: flex; gap: 12px; justify-content: center; margin-bottom: 12px; }
.meta { color: #888; font-size: 13px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-top: 28px; }
.card { background: #fff; border: 1px solid #e5e5e5; border-radius: 8px; padding: 16px; }
.card h3 { margin: 0 0 6px; font-size: 16px; }
.card p { margin: 0; color: #555; font-size: 14px; }
.form-card { background: #fff; border: 1px solid #e5e5e5; border-radius: 8px; padding: 24px; max-width: 480px; margin: 0 auto; }
.form-card.wide { max-width: 640px; }
.form-card label { display: block; margin-bottom: 14px; font-size: 14px; color: #333; }
.form-card input[type=email], .form-card input[type=password], .form-card input[type=file] { display: block; width: 100%; margin-top: 6px; padding: 10px; border: 1px solid #ccc; border-radius: 6px; font-size: 15px; }
.hint { color: #777; font-size: 13px; }
.steps { color: #444; line-height: 1.9; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 18px; }
.stat { background: #fff; border: 1px solid #e5e5e5; border-radius: 8px; padding: 14px; }
.stat span { display: block; color: #777; font-size: 13px; margin-bottom: 4px; }
.stat strong { font-size: 20px; }
.stat em { display: block; font-style: normal; color: #999; font-size: 12px; margin-top: 4px; }
.panel { background: #fff; border: 1px solid #e5e5e5; border-radius: 8px; padding: 18px; margin-bottom: 18px; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 8px 10px; border-bottom: 1px solid #eee; text-align: left; white-space: nowrap; }
th { color: #666; font-weight: 600; }
.pos { color: #2e7d32; }
.neg { color: #c62828; }
.ok { color: #2e7d32; font-weight: 600; }
.bad { color: #c62828; font-weight: 600; }
.warn-t { color: #e65100; }
.empty { background: #fff; border: 1px dashed #ccc; border-radius: 8px; padding: 32px; text-align: center; color: #666; }
.row { display: flex; gap: 12px; }
.chart { width: 100%; height: auto; }
.foot { color: #999; font-size: 12px; text-align: center; padding-bottom: 24px; }