/* 基础样式 */
:root {
  --bg: #0f172a;
  --card: #111827;
  --accent: #3b82f6;
  --accent-2: #22c55e;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --danger: #ef4444;
  --border: #1f2937;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  background: radial-gradient(1200px 600px at 20% 0%, #0b1220 0%, var(--bg) 40%),
              radial-gradient(800px 400px at 80% 20%, #0b1325 0%, var(--bg) 50%);
  color: var(--text);
}

.app-header {
  padding: 28px 20px 10px;
  text-align: center;
}
.app-header h1 {
  margin: 0 0 6px 0;
  font-size: 26px;
  letter-spacing: 0.4px;
}
.subtitle { color: var(--muted); font-size: 14px; }

.tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 10px 20px 20px;
}
.tab-btn {
  padding: 10px 14px;
  border: 1px solid var(--border);
  background: #0b1322;
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
  transition: all .2s ease;
  text-decoration: none; /* 取消链接下划线 */
}
.tab-btn:hover { border-color: var(--accent); }
.tab-btn.active { background: #0d1528; border-color: var(--accent); color: #fff; }

.tab-contents { max-width: 980px; margin: 0 auto; padding: 0 16px 30px; }
.tab-content { display: none; }
.tab-content.active { display: block; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(240px,1fr));
  gap: 14px;
}
.form-group { border: 1px dashed var(--border); border-radius: 12px; padding: 14px; }
.form-group h3 { margin: 0 0 8px; font-size: 16px; color: var(--muted); }

label { display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
input, select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0b1322;
  color: var(--text);
}
input::placeholder { color: #64748b; }

.actions { display: flex; gap: 10px; margin: 16px 0; justify-content: center; }
button.primary, button.secondary {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  cursor: pointer;
}
button.primary { background: var(--accent); color: #fff; border-color: transparent; }
button.secondary { background: #0b1322; color: var(--text); }
button.primary:hover { filter: brightness(1.05); }
button.secondary:hover { border-color: var(--accent); }

.result-card {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #0b1322, #0b1320);
  border-radius: 12px;
  padding: 14px;
}
.result-card h3 { margin: 0 0 8px; font-size: 16px; }
.dual-results h3 { color: #60a5fa; }
.result-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 10px; }
.dual-results { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.kpi { border: 1px solid var(--border); border-radius: 10px; padding: 10px; background: #0d1528; }
.kpi .label { color: var(--muted); font-size: 12px; }
.kpi .value { font-size: 18px; margin-top: 4px; }

.app-footer { text-align: center; padding: 18px 0 28px; color: var(--muted); font-size: 12px; }

/* 小屏优化 */
@media (max-width: 480px) {
  .subtitle { font-size: 12px; }
  .tab-btn { padding: 8px 10px; font-size: 13px; }
}
.note-card { border: 1px dashed var(--border); border-radius: 10px; padding: 12px; background: #0b1222; margin: 12px 0 16px; }
.note-card h3 { margin: 0 0 8px; font-size: 15px; color: #f59e0b; }
.note-card p { margin: 6px 0; color: var(--muted); }
.note-list { margin: 6px 0 8px 18px; }
.note-list li { list-style: disc; margin: 4px 0; color: #d1d5db; }
.note-muted { color: var(--muted); font-size: 12px; }
.info-hint { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border: 1px solid var(--border); border-radius: 999px; color: #e5e7eb; background: #0b1222; cursor: pointer; }
.info-hint:hover { border-color: #f59e0b; color: #fff; }
.info-icon { font-size: 14px; }
.hidden { display: none !important; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.section-head h2 { margin: 0; }
.rate-marquee { display: flex; align-items: center; gap: 10px; padding: 8px 16px; border: 1px solid var(--border); border-radius: 12px; background: #0b1222; color: #e5e7eb; margin: 10px auto; overflow: hidden; max-width: 980px; }
.marquee-item { white-space: nowrap; color: #cbd5e1; font-size: 13px; line-height: 20px; }
.rate-marquee { z-index: 0; margin-top: 6px; margin-bottom: 12px; }
.tab-contents { position: relative; z-index: 1; }
.section-head { margin-top: 8px; }
@media (max-width: 480px) { .marquee-track { animation-duration: 30s; } }
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; overflow-x: auto; }
  .marquee-item { white-space: normal; }
}
.marquee-icon { font-size: 16px; }
.marquee-track { display: flex; width: 100%; overflow: hidden; white-space: nowrap; }
.marquee-group { display: inline-flex; min-width: 100%; flex-shrink: 0; gap: 28px; }
.marquee-group { animation: marquee 40s linear infinite; }
.marquee-group:nth-child(2) { animation-name: marquee2; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-100%); } }
@keyframes marquee2 { from { transform: translateX(100%); } to { transform: translateX(0); } }

/* 移动端更慢滚动 */
@media (max-width: 480px) { .marquee-group { animation-duration: 40s; } }
/* 减少动态效果：停用动画，允许横向滚动并换行显示 */
@media (prefers-reduced-motion: reduce) {
  .marquee-group { animation: none; }
  .marquee-track { overflow-x: auto; }
  .marquee-item { white-space: normal; }
}
.marquee-item { white-space: nowrap; color: #cbd5e1; }