:root {
  --bg: #070b16;
  --card: rgba(16, 22, 42, 0.92);
  --line: rgba(125, 211, 252, 0.2);
  --text: #e8eefc;
  --muted: #93a0c2;
  --cyan: #3ddcff;
  --gold: #ffb020;
  --bad: #ff5c7a;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at top, #13203a, var(--bg) 55%);
  color: var(--text);
}
button, input { font: inherit; color: inherit; }
button {
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(61, 220, 255, 0.2);
}

.lock, #app {
  max-width: 430px;
  margin: 0 auto;
  min-height: 100dvh;
  padding: calc(48px + env(safe-area-inset-top)) 22px calc(28px + env(safe-area-inset-bottom));
}
.lock h1, #app h1 { margin: 4px 0 0; font-size: 34px; }
.eyebrow { margin: 0; color: var(--cyan); letter-spacing: 0.12em; font-size: 12px; }
.eyebrow.warn { color: var(--gold); }
.eyebrow.err { color: var(--bad); }
.lead, .muted, .foot { color: var(--muted); font-size: 14px; line-height: 1.55; }
.error { color: var(--bad); font-size: 13px; }
.top { margin-bottom: 16px; }

.field { display: block; margin: 20px 0 12px; }
.field span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 6px; }
input {
  width: 100%;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #0d1426;
}

.primary {
  width: 100%;
  border: 0;
  border-radius: 16px;
  padding: 14px 16px;
  font-weight: 800;
  background: linear-gradient(180deg, #4ae6ff, #1aa8c8);
  color: #06212a;
}

.tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 20px 0 16px;
}
.tool-card {
  display: grid;
  gap: 6px;
  padding: 16px 14px 14px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--card);
  color: inherit;
  text-decoration: none;
  min-height: 148px;
}
.tool-card:active { border-color: var(--cyan); }
.tool-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(61, 220, 255, 0.12);
  color: var(--cyan);
  font-weight: 800;
}
.tool-card b { font-size: 17px; }
.tool-card small { color: var(--muted); font-size: 12px; line-height: 1.45; }
.foot { font-size: 13px; }

[hidden] { display: none !important; }