/* ============================================================
   项目作品页共享样式（与 devops 展示页同一视觉语言）
   ============================================================ */
:root {
  --bg: #f6f4ff;
  --ink: #120d24;
  --muted: #5d5672;
  --card: #ffffff;
  --line: rgba(18, 13, 36, .09);
  --ac: #6d5cff;
  --ac2: #a855f7;
  --radius: 20px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
code {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: .9em;
  background: rgba(18, 13, 36, .05);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .08em .38em;
}

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(160%) blur(12px);
  background: rgba(246, 244, 255, .82);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 58px;
}
.back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 9px;
}
.back:hover { background: rgba(18, 13, 36, .05); color: var(--ink); }
.topbar .spacer { flex: 1; }
.gh {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 13px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--card);
}
.gh:hover { border-color: var(--ac); color: var(--ac); }

/* ---------- hero ---------- */
.hero {
  padding: 64px 0 40px;
  background:
    radial-gradient(900px 260px at 8% -10%, color-mix(in srgb, var(--ac) 16%, transparent), transparent 70%),
    radial-gradient(700px 220px at 92% 0%, color-mix(in srgb, var(--ac2) 14%, transparent), transparent 70%);
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--ac);
  background: color-mix(in srgb, var(--ac) 10%, #fff);
  border: 1px solid color-mix(in srgb, var(--ac) 26%, transparent);
  padding: 5px 12px;
  border-radius: 999px;
}
.hero h1 {
  margin: 18px 0 10px;
  font-size: clamp(34px, 5.2vw, 52px);
  line-height: 1.12;
  letter-spacing: -1.4px;
}
.hero .lead {
  margin: 0;
  max-width: 760px;
  font-size: 17px;
  color: var(--muted);
}
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--muted);
}
.meta b { color: var(--ink); font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.chip {
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
}

/* ---------- sections ---------- */
.section { padding: 44px 0; }
.section-head { margin-bottom: 22px; }
.section-head .no {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--ac);
}
.section-head h2 {
  margin: 6px 0 0;
  font-size: clamp(22px, 2.8vw, 29px);
  letter-spacing: -.6px;
}
.section-head p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
  max-width: 780px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}

/* ---------- architecture ---------- */
.arch {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.arch-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
}
.arch-bar .dots { display: flex; gap: 5px; }
.arch-bar .dots i {
  width: 8px; height: 8px; border-radius: 50%;
  background: color-mix(in srgb, var(--ac) 40%, #d9d5ea);
}
.arch-bar .grow { flex: 1; }
.arch-bar a { color: var(--ac); font-weight: 600; }
.arch iframe {
  display: block;
  width: 100%;
  height: min(76vh, 700px);
  border: 0;
  background: #fff;
}

/* ---------- feature grid ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
}
.feature .ico {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: color-mix(in srgb, var(--ac) 12%, #fff);
  border: 1px solid color-mix(in srgb, var(--ac) 22%, transparent);
  font-size: 17px;
  margin-bottom: 12px;
}
.feature h3 { margin: 0 0 7px; font-size: 16.5px; }
.feature p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ---------- bullets / tradeoffs ---------- */
.bullets { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.bullets li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
  font-size: 15px;
}
.bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: .66em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ac);
  opacity: .75;
}
.bullets b { color: var(--ink); }

.tradeoffs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.tradeoff {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
}
.tradeoff h3 {
  margin: 0 0 8px;
  font-size: 15px;
  display: flex; align-items: center; gap: 8px;
}
.tradeoff .mark {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 7px;
  font-size: 12px;
  background: color-mix(in srgb, var(--ac) 12%, #fff);
  color: var(--ac);
}
.tradeoff p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ---------- code snippet ---------- */
pre {
  margin: 0;
  padding: 20px 22px;
  background: #17131f;
  color: #e7e3f7;
  border-radius: 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.65;
}
pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; }
pre .cm { color: #8d86a8; }
pre .kw { color: #c4a7ff; }
pre .st { color: #9ee6c0; }

/* ---------- stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
}
.stat strong {
  display: block;
  font-size: 24px;
  letter-spacing: -.6px;
  color: var(--ac);
}
.stat span { font-size: 12.5px; color: var(--muted); }

/* ---------- footer nav ---------- */
.pager {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 28px 0 60px;
  border-top: 1px solid var(--line);
  margin-top: 24px;
  font-size: 14px;
}
.pager a {
  padding: 10px 16px;
  border-radius: 11px;
  border: 1px solid var(--line);
  background: var(--card);
  font-weight: 600;
}
.pager a:hover { border-color: var(--ac); color: var(--ac); }

@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr; }
  .tradeoffs { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .arch iframe { height: 62vh; min-height: 420px; }
}