/* JUDY 官网 — violet 主题 */

:root {
  --accent: #8b5cf6;
  --accent-strong: #7c3aed;
  --accent-soft: rgba(139, 92, 246, 0.12);
  --bg: #ffffff;
  --bg-alt: #f7f7fb;
  --text: #17141f;
  --text-dim: #5b5766;
  --border: rgba(23, 20, 31, 0.1);
  --card-bg: #ffffff;
  --shadow: 0 10px 30px rgba(23, 20, 31, 0.08);
  --code-bg: #131118;
  --code-text: #e4e0f0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0b12;
    --bg-alt: #12101a;
    --text: #eeeaf8;
    --text-dim: #9a94ac;
    --border: rgba(238, 234, 248, 0.12);
    --card-bg: #14121d;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

/* ── 导航 ─────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
}
.brand img { border-radius: 6px; }
.links { display: flex; gap: 22px; align-items: center; }
.links a { color: var(--text-dim); font-size: 14px; transition: color 0.15s; }
.links a:hover { color: var(--accent); }

.lang-switch {
  appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.lang-switch:hover { color: var(--accent); border-color: var(--accent); }

/* ── Hero ─────────────────────────────── */
.hero {
  position: relative;
  text-align: center;
  padding: 96px 24px 72px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto;
  height: 560px;
  background:
    radial-gradient(ellipse 60% 55% at 50% 0%, var(--accent-soft), transparent 70%);
  pointer-events: none;
}
.hero-logo {
  border-radius: 18px;
  box-shadow: 0 18px 50px var(--accent-soft);
}
.hero h1 {
  margin-top: 28px;
  font-size: clamp(44px, 8vw, 72px);
  letter-spacing: 0.14em;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text) 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.tagline {
  margin-top: 12px;
  font-size: clamp(18px, 3vw, 24px);
  font-weight: 600;
  color: var(--accent);
}
.sub {
  margin: 18px auto 0;
  max-width: 560px;
  color: var(--text-dim);
  font-size: 15px;
}
.cta {
  margin-top: 34px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  box-shadow: 0 10px 24px var(--accent-soft);
}
.btn.primary:hover { box-shadow: 0 14px 30px var(--accent-soft); }
.btn.ghost {
  border: 1px solid var(--border);
  color: var(--text);
}
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ── 分区通用 ─────────────────────────── */
section { padding: 72px 24px; }
section h2 {
  text-align: center;
  font-size: clamp(24px, 4vw, 32px);
  margin-bottom: 12px;
}
.features, .quickstart, .open { background: var(--bg-alt); }
.features { border-top: 1px solid var(--border); }

/* ── 特性卡片 ─────────────────────────── */
.grid {
  max-width: 1020px;
  margin: 36px auto 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px 24px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.card .icon { font-size: 26px; }
.card h3 { margin: 12px 0 8px; font-size: 17px; }
.card p { color: var(--text-dim); font-size: 14px; }

/* ── 界面截图 ─────────────────────────── */
.shots .lead { text-align: center; color: var(--text-dim); margin-top: 8px; }
.shot-grid {
  max-width: 1020px;
  margin: 36px auto 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.shot.main { grid-column: 1 / -1; }
.shot { margin: 0; transition: transform 0.15s, box-shadow 0.15s; }
.shot:hover { transform: translateY(-4px); }
.frame {
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-alt);
  box-shadow: var(--shadow);
}
.frame-bar {
  display: flex;
  gap: 6px;
  align-items: center;
  height: 32px;
  padding: 0 14px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}
.frame-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.frame-bar span:first-child { background: #f87171; }
.frame-bar span:nth-child(2) { background: #fbbf24; }
.frame-bar span:nth-child(3) { background: #34d399; }
.frame img { display: block; width: 100%; height: auto; }
.frame img[hidden] { display: none; }
.shot-missing {
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  border: 1.5px dashed var(--border);
  border-radius: 10px;
  margin: 14px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13.5px;
  line-height: 1.6;
}
.shot-missing[hidden] { display: none; }
.shot figcaption {
  text-align: center;
  color: var(--text-dim);
  font-size: 13.5px;
  margin-top: 10px;
}

/* ── 快速开始 ─────────────────────────── */
.quickstart .lead { text-align: center; color: var(--text-dim); margin-top: 8px; }
.quickstart pre {
  max-width: 720px;
  margin: 28px auto 0;
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: 14px;
  padding: 22px 26px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.7;
  border: 1px solid var(--border);
}
.quickstart code { font-family: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace; }
.hint { text-align: center; color: var(--text-dim); font-size: 13px; margin-top: 18px; }
.presets .lead { text-align: center; color: var(--text-dim); margin-top: 8px; }

/* ── 开源 ─────────────────────────────── */
.open { text-align: center; border-top: 1px solid var(--border); }
.open p { max-width: 520px; margin: 8px auto 0; color: var(--text-dim); font-size: 15px; }
.open .attribution { font-size: 12.5px; opacity: 0.75; margin-top: 14px; }

/* ── 页脚 ─────────────────────────────── */
.footer { border-top: 1px solid var(--border); }
.footer .inner {
  max-width: 1020px;
  margin: 0 auto;
  padding: 22px 24px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--text-dim);
  font-size: 13px;
}
.footer a:hover { color: var(--accent); }

/* ── 响应式 ───────────────────────────── */
@media (max-width: 560px) {
  .nav { padding: 12px 16px; }
  .links { gap: 14px; }
  .links a { font-size: 13px; }
  .hero { padding: 64px 16px 56px; }
  section { padding: 56px 16px; }
  .shot-grid { grid-template-columns: 1fr; }
}