/* 第2套 www · 深色工位控制台 */
:root {
  --bg: #0e141b;
  --panel: #16202b;
  --line: #2a3b4d;
  --text: #d7e3ee;
  --muted: #8aa0b5;
  --cyan: #3ec6d8;
  --amber: #e3b341;
  --ok: #4caf7a;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: auto; }

body {
  margin: 0;
  background:
    linear-gradient(180deg, #101820 0%, var(--bg) 120px),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

img, svg { max-width: 100%; vertical-align: middle; }
a { color: var(--cyan); }
a:hover { color: #7be6f2; }

.db-shell {
  display: grid;
  grid-template-columns: 236px 1fr;
  min-height: 100vh;
}

.db-side {
  background: #0b1117;
  border-right: 1px solid var(--line);
  padding: 22px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.db-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.db-brand svg { width: 28px; height: 28px; color: var(--cyan); }
.db-side p {
  color: var(--muted);
  font-size: 12px;
  margin: 10px 0 22px;
}

.db-nav a {
  display: block;
  padding: 10px 12px;
  margin-bottom: 6px;
  color: var(--text);
  text-decoration: none;
  border-left: 3px solid transparent;
  background: transparent;
}
.db-nav a:hover,
.db-nav a.on {
  background: var(--panel);
  border-left-color: var(--cyan);
  color: #fff;
}

.db-main { padding: 28px 36px 48px; }
.db-hero {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 28px;
  margin-bottom: 22px;
}
.db-hero h1 {
  margin: 0 0 12px;
  font-size: 28px;
  color: #fff;
}
.db-kicker {
  display: inline-block;
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 0.16em;
  margin-bottom: 8px;
}

.db-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.db-btn,
.db-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  text-decoration: none;
  border-radius: 4px;
}
.db-btn { background: var(--cyan); color: #062026; font-weight: 700; }
.db-btn:hover { background: #6ad7e4; color: #062026; }
.db-btn-ghost { border: 1px solid var(--line); color: var(--text); }
.db-btn-ghost:hover { border-color: var(--cyan); }
.db-btn svg, .db-btn-ghost svg { width: 16px; height: 16px; }

.db-sec { margin: 28px 0; }
.db-sec h2 {
  margin: 0 0 12px;
  font-size: 20px;
  color: var(--cyan);
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

.db-row { display: grid; gap: 12px; margin: 14px 0; }
.db-row-2 { grid-template-columns: 1fr 1fr; }
.db-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.db-row-4 { grid-template-columns: repeat(4, 1fr); }

.db-card,
.db-quote,
.db-faq {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px;
}
.db-card h3, .db-faq h3 { margin: 0 0 8px; color: var(--amber); font-size: 16px; }
.db-card p, .db-quote p, .db-faq p { margin: 0; color: var(--text); }
.db-quote footer { margin-top: 8px; color: var(--muted); font-size: 13px; }

.db-stat {
  background: #101821;
  border: 1px solid var(--line);
  padding: 16px;
  text-align: left;
}
.db-stat b { display: block; color: var(--cyan); font-size: 24px; }
.db-stat span { color: var(--muted); font-size: 13px; }

.db-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.db-table th, .db-table td { border: 1px solid var(--line); padding: 9px 10px; }
.db-table th { background: #101821; color: var(--amber); text-align: left; }

.db-foot {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.db-foot .safe { color: var(--ok); }
.db-foot a { margin-right: 12px; }

@media (max-width: 900px) {
  .db-shell { grid-template-columns: 1fr; }
  .db-side { position: relative; height: auto; }
  .db-nav { display: flex; gap: 8px; flex-wrap: wrap; }
  .db-nav a { border-left: 0; border-bottom: 2px solid transparent; }
  .db-nav a.on { border-bottom-color: var(--cyan); }
  .db-main { padding: 18px 16px 36px; }
  .db-row-2, .db-row-3, .db-row-4 { grid-template-columns: 1fr; }
}