:root {
  --bg-0: #ffffff;
  --bg-1: #eef1f9;
  --text: #1f2328;
  --text-2: #5b6472;
  --card: rgba(255, 255, 255, 0.85);
  --card-hover: rgba(255, 255, 255, 1);
  --border: rgba(15, 23, 42, 0.1);
  --border-hover: rgba(15, 23, 42, 0.24);
  --rainbow: linear-gradient(90deg, #e11d48, #ea580c, #ca8a04, #16a34a, #0284c7, #7c3aed, #e11d48);
  --link: #2563eb;
  --chip-bg: rgba(37, 99, 235, 0.1);
  --chip-text: #1d4ed8;
  --code-bg: rgba(15, 23, 42, 0.06);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: radial-gradient(1200px 500px at 15% -10%, rgba(124, 58, 237, 0.12), transparent 60%),
              radial-gradient(1000px 500px at 90% 0%, rgba(2, 132, 199, 0.10), transparent 55%),
              radial-gradient(900px 700px at 50% 120%, rgba(225, 29, 72, 0.07), transparent 60%),
              linear-gradient(180deg, var(--bg-1), var(--bg-0));
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }

/* ---- 头部 ---- */
header { padding: 72px 0 8px; text-align: center; }
header .logo { font-size: clamp(44px, 9vw, 72px); font-weight: 800; letter-spacing: 1px; }
header .logo span {
  background: var(--rainbow);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
header .slogan { margin-top: 14px; color: var(--text-2); font-size: 15px; }
header .slogan b { color: var(--text); font-weight: 600; }

/* ---- 区块 ---- */
section { margin-top: 48px; }
.section-title { font-size: 13px; font-weight: 700; letter-spacing: 3px; color: var(--text-2); text-transform: uppercase; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.section-title::after { content: ""; flex: 1; height: 1px; background: var(--border); }

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 28px;
  backdrop-filter: blur(8px);
}

/* ---- 公告 ---- */
.notice-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.notice-title { font-size: 18px; font-weight: 700; }
.notice-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 12px; color: var(--text-2); }
.notice-loading { padding: 18px 0 4px; color: var(--text-2); font-size: 14px; }
.chip {
  font-size: 12px; color: var(--chip-text); background: var(--chip-bg);
  border: 1px solid rgba(37, 99, 235, 0.3); border-radius: 999px; padding: 1px 10px;
}
.notice-fail { padding: 18px 0 4px; color: var(--text-2); font-size: 14px; }
.notice-fail a, .notice-more { color: var(--link); text-decoration: none; }
.notice-fail a:hover, .notice-more:hover { text-decoration: underline; }
.notice-more { display: inline-block; margin-top: 16px; font-size: 13px; }

/* 公告 Markdown 内容（doc.918845.xyz 后端渲染后注入） */
.markdown { margin-top: 18px; font-size: 15px; color: #333a45; }
.markdown h1, .markdown h2, .markdown h3, .markdown h4 { margin: 1.3em 0 .55em; line-height: 1.4; color: var(--text); }
.markdown h1 { font-size: 1.45em; }
.markdown h2 { font-size: 1.28em; }
.markdown h3 { font-size: 1.12em; }
.markdown h1:first-child, .markdown h2:first-child, .markdown p:first-child { margin-top: 0; }
.markdown p { margin: .7em 0; }
.markdown a { color: var(--link); text-decoration: none; }
.markdown a:hover { text-decoration: underline; }
.markdown ul, .markdown ol { margin: .7em 0; padding-left: 1.6em; }
.markdown li { margin: .25em 0; }
.markdown blockquote {
  margin: .9em 0; padding: .4em 1em; color: var(--text-2);
  border-left: 3px solid var(--link); background: rgba(15, 23, 42, 0.03); border-radius: 0 8px 8px 0;
}
.markdown code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  background: var(--code-bg); border-radius: 5px; padding: .15em .4em; font-size: .9em;
}
.markdown pre {
  background: #f2f4f8; color: #1f2328; border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 16px; overflow-x: auto; margin: .9em 0;
}
.markdown pre code { background: none; color: inherit; padding: 0; font-size: .88em; }
.markdown table { border-collapse: collapse; margin: .9em 0; width: 100%; font-size: .95em; }
.markdown th, .markdown td { border: 1px solid var(--border); padding: 7px 12px; text-align: left; }
.markdown th { background: rgba(15, 23, 42, 0.04); }
.markdown img { max-width: 100%; border-radius: 10px; }
.markdown hr { border: none; border-top: 1px solid var(--border); margin: 1.3em 0; }

/* ---- 功能卡片 ---- */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.card {
  display: flex; align-items: center; gap: 14px;
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px; text-decoration: none; color: inherit;
  transition: transform .15s, border-color .15s, background .15s, box-shadow .15s;
}
.card:hover {
  background: var(--card-hover); border-color: var(--border-hover);
  transform: translateY(-2px); box-shadow: 0 10px 28px rgba(15, 23, 42, 0.1);
}
.card-icon {
  font-size: 26px; width: 52px; height: 52px; flex: none;
  display: flex; align-items: center; justify-content: center;
  background: rgba(15, 23, 42, 0.04); border: 1px solid var(--border);
  border-radius: 13px;
}
.card-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.card-title { font-size: 16px; font-weight: 700; }
.card-desc { font-size: 12.5px; color: var(--text-2); }
.card-arrow { margin-left: auto; color: var(--text-2); font-size: 15px; transition: transform .15s; }
.card:hover .card-arrow { transform: translate(2px, -2px); color: var(--text); }

footer { margin-top: 64px; padding: 26px 0 44px; text-align: center; font-size: 12px; color: var(--text-2); }

@media (max-width: 620px) {
  .grid { grid-template-columns: 1fr; }
  .panel { padding: 20px 18px; }
  header { padding-top: 52px; }
}