:root {
  --blue: #4e6ef2;
  --blue-h: #4662d9;
  --ink: #222;
  --muted: #626675;
  --lime: #baea2a;
  --dark: #09090b;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  min-height: 100vh;
}
a { color: #2440b3; text-decoration: none; }
a:hover { text-decoration: underline; }

.top {
  display: flex; justify-content: flex-end; gap: 18px;
  padding: 16px 24px 0; font-size: 13px;
}
.top a { color: #222; }
.top .login {
  background: var(--blue); color: #fff; padding: 4px 14px; border-radius: 6px;
}
.top .login:hover { text-decoration: none; background: var(--blue-h); }

.home {
  min-height: 62vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 24px 16px 40px;
}
.logo { width: 140px; height: 140px; object-fit: contain; margin-bottom: 8px; }
.wordmark { font-size: 42px; font-weight: 700; letter-spacing: .08em; margin-bottom: 22px; }
.wordmark span { color: var(--blue); }

.fm { display: flex; width: min(640px, 92vw); }
.ipt {
  flex: 1; height: 44px; border: 2px solid #c4c7ce; border-right: 0;
  border-radius: 10px 0 0 10px; padding: 0 14px; font-size: 16px; outline: none;
}
.ipt:focus { border-color: var(--blue); }
.btn {
  width: 112px; height: 44px; border: 0; background: var(--blue); color: #fff;
  font-size: 17px; border-radius: 0 10px 10px 0; cursor: pointer; letter-spacing: 2px;
}
.btn:hover { background: var(--blue-h); }

.tabs { margin-top: 18px; display: flex; gap: 22px; font-size: 14px; color: var(--muted); }
.tabs a { color: var(--muted); }
.tabs a.on { color: #222; font-weight: 700; border-bottom: 2px solid var(--blue); padding-bottom: 4px; }

.hint { margin-top: 28px; font-size: 13px; color: #9195a3; }
.hint b { color: var(--blue); }

.ticker {
  background: var(--dark); color: #baea2a; overflow: hidden;
  font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; padding: 8px 0;
}
.ticker span { display: inline-block; white-space: nowrap; animation: marq 36s linear infinite; }
@keyframes marq { to { transform: translateX(-50%); } }

.agent {
  background: #0c0e12; color: #d8e0d4;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  padding: 48px 8vw;
}
.agent h2 { color: #fff; font-size: 28px; margin-bottom: 8px; }
.agent h2 em { color: var(--blue); font-style: normal; }
.agent .sub { color: #8a948c; margin-bottom: 22px; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 24px 0; }
.stat { border: 1px solid #1c2a22; padding: 16px; background: #10151a; }
.stat b { display: block; font-size: 26px; color: #baea2a; }
.stat span { color: #7d8b86; font-size: 12px; }
.feed { display: grid; gap: 10px; }
.item { display: flex; gap: 12px; background: #10151a; border: 1px solid #1c2a22; padding: 12px; }
.item img { width: 40px; height: 40px; border-radius: 8px; }
.item p { font-size: 13px; line-height: 1.5; color: #c8d5ce; }
.log { margin-top: 20px; font-size: 12px; color: #7d8b86; line-height: 1.8; }
.ca { margin-top: 18px; color: #baea2a; font-size: 12px; cursor: pointer; word-break: break-all; }

.hots { margin-top: 28px; width: min(640px, 92vw); }
.hots h4 { font-size: 13px; color: #9195a3; margin-bottom: 10px; font-weight: 400; }
.hots div { display: flex; flex-wrap: wrap; gap: 8px; }
.hots button {
  border: 1px solid #ebebeb; background: #fff; padding: 6px 12px; border-radius: 16px;
  font: inherit; font-size: 13px; cursor: pointer; color: #333;
}
.hots button:hover { border-color: #4e6ef2; color: #4e6ef2; }

.serp { display: none; padding: 24px 8vw 48px; max-width: 860px; }
.serp.on { display: block; }
.serp .meta { font-size: 13px; color: #9195a3; margin-bottom: 18px; }
.result { margin-bottom: 22px; }
.result h3 { font-size: 18px; font-weight: 400; margin-bottom: 4px; }
.result h3 a { color: #2440b3; }
.result .url { color: #626675; font-size: 13px; }
.result p { font-size: 13px; line-height: 1.6; color: #333; margin-top: 4px; }
.result em { color: #c00; font-style: normal; }

footer {
  padding: 18px 24px 28px; font-size: 12px; color: #9195a3;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
}

@media (max-width: 720px) {
  .stats { grid-template-columns: 1fr; }
  .wordmark { font-size: 32px; }
}