/* DBMan 官网样式：深色霓虹风格，与应用内 theme.css 保持一致 */
:root {
  --bg: #05070f;
  --bg-1: #0a1020;
  --panel: #0d1526;
  --line: rgba(120, 160, 220, .16);
  --line-strong: rgba(0, 229, 255, .45);
  --text: #d9e6f5;
  --text-dim: #7b8cae;
  --cyan: #00e5ff;
  --cyan-soft: rgba(0, 229, 255, .7);
  --magenta: #ff3d81;
  --violet: #8b6cff;
  --radius: 12px;
  --font-ui: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.wrap {
  width: min(1180px, 92vw);
  margin: 0 auto;
}

/* ===== 导航 ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 7, 15, .82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  color: var(--cyan);
  filter: drop-shadow(0 0 10px rgba(0, 229, 255, .5));
}
.brand-mark svg { width: 100%; height: 100%; }
.brand-text {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 3px;
}
.brand-text.small { font-size: 15px; letter-spacing: 2px; }
.caret { color: var(--cyan); animation: blink 1.1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav-links {
  display: flex;
  gap: 22px;
  margin-left: auto;
  font-size: 14px;
  color: var(--text-dim);
}
.nav-links a:hover { color: var(--cyan); }
/* 导航里的 GitHub 入口：图标与文字同色，hover 跟随导航变青 */
.nav-github { display: inline-flex; align-items: center; gap: 6px; }
.gh-icon { width: 15px; height: 15px; flex: 0 0 auto; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .5px;
  color: var(--cyan);
  background: rgba(0, 229, 255, .1);
  transition: all .22s ease;
}
.btn:hover { box-shadow: 0 0 26px -6px var(--cyan); transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(135deg, rgba(0, 229, 255, .9), rgba(139, 108, 255, .9));
  color: #04121a;
  border-color: transparent;
}
.btn-primary:hover { box-shadow: 0 0 34px -4px rgba(0, 229, 255, .8); }
.btn-ghost {
  background: rgba(255, 255, 255, .03);
  color: var(--text-dim);
  border-color: var(--line);
}
.btn-ghost:hover { color: var(--text); border-color: var(--line-strong); }

/* ===== Hero ===== */
.hero { position: relative; overflow: hidden; padding: 72px 0 84px; }
.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  pointer-events: none;
}
.glow-a { width: 460px; height: 460px; top: -140px; left: -80px; background: rgba(0, 229, 255, .2); }
.glow-b { width: 520px; height: 520px; top: 60px; right: -160px; background: rgba(139, 108, 255, .18); }

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 52px;
  align-items: center;
}
.pill {
  display: inline-block;
  padding: 5px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .03);
  color: var(--cyan-soft);
  font-size: 12.5px;
  letter-spacing: .6px;
}
.hero h1 {
  margin: 20px 0 18px;
  font-size: clamp(32px, 4.2vw, 52px);
  line-height: 1.18;
  letter-spacing: 1px;
}
.hero h1 em {
  font-style: normal;
  color: var(--cyan);
  text-shadow: 0 0 34px rgba(0, 229, 255, .55);
}
.lead { color: var(--text-dim); font-size: 15.5px; max-width: 46ch; }
.hero-actions { display: flex; gap: 14px; margin: 30px 0 34px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 38px;
  margin: 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.hero-stats b {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  color: var(--cyan);
}
.hero-stats span { color: var(--text-dim); font-size: 13px; }

/* ===== 演示窗口 ===== */
.demo {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(13, 21, 38, .96), rgba(6, 10, 20, .96));
  box-shadow: 0 30px 90px -40px rgba(0, 229, 255, .45), inset 0 0 60px -40px rgba(0, 229, 255, .4);
  overflow: hidden;
}
.demo-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(6, 10, 20, .8);
}
.dot { width: 10px; height: 10px; border-radius: 50%; opacity: .85; }
.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }
.demo-title {
  margin-left: 10px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11.5px;
}
/* 固定演示区高度：预留足够放下「SQL 打满 5 行 + 结果 4 行」的高度，
   动画只在框内增减内容，高度不参与文档流变化，避免每轮循环整页跳动 */
.demo-body { display: grid; grid-template-columns: 168px minmax(0, 1fr); min-height: 460px; }
.demo-side {
  padding: 12px;
  border-right: 1px solid var(--line);
  background: rgba(5, 9, 18, .6);
  font-size: 12px;
}
.side-label {
  color: var(--text-dim);
  font-size: 11px;
  letter-spacing: 1px;
  margin: 6px 0 6px;
}
.side-conn {
  padding: 6px 9px;
  margin-bottom: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11.5px;
  background: rgba(0, 229, 255, .07);
}
.side-tables { list-style: none; margin: 0; padding: 0; }
.side-tables li {
  padding: 5px 9px;
  border-radius: 5px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11.5px;
  transition: all .25s ease;
}
.side-tables li.is-active {
  color: var(--cyan);
  background: rgba(0, 229, 255, .1);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.demo-main { padding: 14px; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.demo-ai {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(4, 7, 15, .75);
  font-family: var(--font-mono);
  font-size: 12px;
  min-height: 38px;
}
.ai-tag {
  flex: 0 0 auto;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(139, 108, 255, .22);
  color: #b9a8ff;
  font-size: 10.5px;
  letter-spacing: 1px;
}
.ai-input { color: var(--text); }
.caret-blink { color: var(--cyan); animation: blink 1s step-end infinite; }

.demo-sql {
  margin: 0;
  padding: 12px;
  min-height: 92px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(4, 7, 15, .85);
  color: var(--cyan-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
  overflow: hidden;
}
.demo-result {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(4, 7, 15, .6);
  overflow: hidden;
  min-height: 104px;
}
.res-head, .res-row {
  display: grid;
  grid-template-columns: 52px 1fr 1.2fr 1.4fr;
  gap: 8px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
}
.res-head {
  color: var(--cyan);
  border-bottom: 1px solid var(--line);
  background: rgba(0, 229, 255, .05);
}
.res-row {
  color: var(--text-dim);
  border-bottom: 1px dashed rgba(120, 160, 220, .1);
  opacity: 0;
  transform: translateY(6px);
  animation: rowIn .38s ease forwards;
}
@keyframes rowIn { to { opacity: 1; transform: none; } }

.demo-steps {
  display: flex;
  gap: 8px;
  padding: 12px 14px 0;
  flex-wrap: wrap;
}
.demo-steps span {
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 11px;
  letter-spacing: .5px;
  transition: all .3s ease;
}
.demo-steps span.is-done { color: var(--cyan); border-color: var(--line-strong); background: rgba(0, 229, 255, .08); }
.demo-note {
  padding: 10px 14px 14px;
  color: var(--text-dim);
  font-size: 11px;
}

/* ===== 通用区块 ===== */
.section { padding: 84px 0; }
.section-alt { background: linear-gradient(180deg, rgba(10, 16, 32, .6), transparent); }
.section-title {
  margin: 0 0 10px;
  font-size: clamp(24px, 2.8vw, 34px);
  letter-spacing: 1px;
}
.section-title em { font-style: normal; color: var(--cyan); text-shadow: 0 0 28px rgba(0, 229, 255, .45); }
.section-sub { margin: 0 0 38px; color: var(--text-dim); font-size: 15px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(288px, 1fr));
  gap: 18px;
}
.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(13, 21, 38, .8), rgba(8, 12, 22, .6));
  transition: all .25s ease;
}
.card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
  box-shadow: 0 24px 60px -34px rgba(0, 229, 255, .6);
}
.card h3 { margin: 0 0 10px; font-size: 16.5px; color: var(--text); letter-spacing: .5px; }
.card p { margin: 0; color: var(--text-dim); font-size: 14px; }

/* ===== 下载区 ===== */
.dl-primary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
  gap: 18px;
}
.dl-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(13, 21, 38, .9), rgba(8, 12, 22, .7));
  transition: all .25s ease;
}
.dl-card:hover { border-color: var(--line-strong); box-shadow: 0 24px 60px -34px rgba(0, 229, 255, .6); transform: translateY(-3px); }
.dl-card.is-current { border-color: var(--cyan); box-shadow: 0 0 0 1px rgba(0, 229, 255, .3), 0 24px 60px -34px rgba(0, 229, 255, .8); }
.dl-os { font-size: 17px; font-weight: 600; color: var(--text); }
.dl-arch { color: var(--cyan-soft); font-family: var(--font-mono); font-size: 12px; }
.dl-note { color: var(--text-dim); font-size: 13px; min-height: 40px; }
.dl-cta {
  margin-top: 10px;
  align-self: flex-start;
  padding: 7px 18px;
  border-radius: 7px;
  border: 1px solid var(--line-strong);
  color: var(--cyan);
  background: rgba(0, 229, 255, .1);
  font-size: 13px;
  font-weight: 600;
}

.dl-more { margin-top: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(8, 12, 22, .5); }
.dl-more summary {
  padding: 14px 20px;
  cursor: pointer;
  color: var(--text-dim);
  font-size: 13.5px;
}
.dl-more summary:hover { color: var(--cyan); }
.dl-list { list-style: none; margin: 0; padding: 6px 20px 18px; }
.dl-list li + li { margin-top: 6px; }
.dl-list a {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 12px;
  border-radius: 7px;
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 12.5px;
  transition: all .2s ease;
}
.dl-list a:hover { border-color: var(--line); background: rgba(0, 229, 255, .05); }
.dl-fname { color: var(--text); }
.dl-fnote { color: var(--text-dim); font-family: var(--font-ui); white-space: nowrap; }

.dl-tips { margin-top: 26px; color: var(--text-dim); font-size: 13px; }
.dl-tips b { color: var(--cyan-soft); }
.dl-tips code {
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, .06);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ===== 页脚 ===== */
.footer { border-top: 1px solid var(--line); padding: 30px 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-note { color: var(--text-dim); font-size: 13px; }
.footer-links { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.footer-github {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: color .2s;
}
.footer-github:hover { color: var(--cyan); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .lead { max-width: none; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .hero { padding: 48px 0 64px; }
  .section { padding: 60px 0; }
  .demo-body { grid-template-columns: 1fr; }
  .demo-side { display: none; }
  .res-head, .res-row { grid-template-columns: 44px 1fr 1.4fr; }
  .res-head > :nth-child(4), .res-row > :nth-child(4) { display: none; }
  .dl-list a { flex-direction: column; gap: 2px; }
  .dl-fnote { white-space: normal; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}