:root {
  --bg: #06090f;
  --bg2: #0b1220;
  --panel: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.1);
  --text: #e8edf6;
  --muted: #8b96ad;
  --accent: #7cc7ff;
  --gold: #d9a94e;
  --err: #ff6b6b;
  --ok: #4ade80;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
  background:
    radial-gradient(1000px 500px at 20% -10%, rgba(76, 116, 255, 0.22), transparent 60%),
    radial-gradient(800px 500px at 90% 0%, rgba(140, 80, 255, 0.18), transparent 55%),
    radial-gradient(700px 700px at 50% 120%, rgba(0, 180, 200, 0.10), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  color: var(--text);
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.card {
  width: 100%; max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 30px 26px;
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

/* 品牌 */
.brand { display: flex; flex-direction: column; align-items: center; gap: 10px; margin-bottom: 18px; }
.brand-img {
  width: 76px; height: 76px; object-fit: cover;
  border-radius: 20px;
  box-shadow: 0 0 0 2px rgba(245, 208, 97, 0.35), 0 10px 28px rgba(184, 134, 11, 0.35);
}
.brand-text { text-align: center; }
.brand-text h1 { margin: 0; font-size: 23px; letter-spacing: 0.4px; }
.brand-text h1 .star { color: var(--gold); font-size: 0.7em; vertical-align: super; }
.brand-text .footnote { margin: 4px 0 0; font-size: 12px; color: var(--muted); }

/* 状态区 */
.state h2 { margin: 0 0 6px; font-size: 20px; text-align: center; }
.state .sub { margin: 0 0 16px; font-size: 13px; color: var(--muted); text-align: center; }
.tips { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 18px; }
.tips span {
  font-size: 11px; color: var(--accent);
  background: rgba(124, 199, 255, 0.1);
  border: 1px solid rgba(124, 199, 255, 0.25);
  border-radius: 999px; padding: 4px 10px;
}
.tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.tab {
  flex: 1; padding: 9px 0;
  background: transparent; border: 1px solid var(--border);
  color: var(--muted); border-radius: 10px; font-size: 13px; cursor: pointer;
}
.tab.active {
  background: linear-gradient(135deg, #4c74ff, #9a5cff);
  color: #fff; border-color: transparent;
}

/* 表单 */
.field-name { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 5px; }
input {
  width: 100%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124, 199, 255, 0.15); }
.btn {
  width: 100%; margin-top: 16px;
  border: none; border-radius: 10px;
  padding: 11px 18px; font-size: 15px; font-weight: 700;
  background: linear-gradient(135deg, #4c74ff, #9a5cff);
  color: #fff; cursor: pointer;
  box-shadow: 0 6px 20px rgba(90, 110, 255, 0.35);
  transition: all 0.15s;
}
.btn:hover { filter: brightness(1.1); }
.btn.big { padding: 14px 18px; font-size: 16px; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--muted); box-shadow: none; }
.err { color: var(--err); font-size: 13px; text-align: center; margin: 12px 0 0; }

/* 结果 */
.code-line { text-align: center; font-size: 13px; color: var(--muted); margin: 16px 0 4px; }
.code-line code {
  font-family: Consolas, monospace; font-size: 15px; color: var(--gold);
  background: rgba(0, 0, 0, 0.3); border: 1px dashed rgba(217, 169, 78, 0.4);
  border-radius: 8px; padding: 4px 10px; letter-spacing: 1px;
}
.state .muted.small { text-align: center; margin: 8px 0 0; }
.footer-note { margin: 18px 0 0; font-size: 11px; color: var(--muted); line-height: 1.7; text-align: center; }