:root {
  color-scheme: dark;
  --bg-0: #0b0f19;
  --bg-1: #121827;
  --card: rgba(14, 20, 32, 0.72);
  --text: #f2f5fb;
  --muted: #b6c0d4;
  --line: #2a3347;
  --accent: #5ac8a3;
  --accent-2: #6da8ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "SF Pro Text", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(109, 168, 255, 0.22), transparent 60%),
    radial-gradient(1000px 560px at -10% 120%, rgba(90, 200, 163, 0.20), transparent 55%),
    linear-gradient(160deg, var(--bg-0), var(--bg-1));
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.panel {
  width: min(560px, 100%);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 28px;
  background: var(--card);
  backdrop-filter: blur(12px);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.35);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-size: 12px;
}

.title {
  margin: 0;
  font-size: clamp(26px, 4.2vw, 34px);
  line-height: 1.15;
}

.desc {
  margin: 12px 0 18px;
  color: var(--muted);
  line-height: 1.55;
}

.progress-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.progress-area[hidden] {
  display: none !important;
}

.progress-wrap {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  overflow: hidden;
  background: rgba(9, 13, 20, 0.9);
}

.progress-bar {
  height: 100%;
  width: 6%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 280ms ease;
}

.meta {
  margin: 12px 0 22px;
  color: var(--muted);
  font-size: 14px;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 12px;
  height: 42px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
}

.btn-primary {
  border-color: transparent;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #081018;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
}

@media (max-width: 480px) {
  .panel {
    padding: 22px;
    border-radius: 18px;
  }

  .actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }
}