/* 页面基础 */
:root {
  --bg-start: #0b0122;
  --bg-end: #0e1f4d;
  --card-bg: rgba(18, 23, 56, 0.82);
  --text: #f3f4ff;
  --muted: rgba(243, 244, 255, 0.72);
  --accent: #5c6fff;
  --accent-2: #a05bff;
  --shadow: 0 24px 40px rgba(3, 13, 41, 0.55);
  --border: rgba(255, 255, 255, 0.12);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 25% 20%, rgba(92, 111, 255, 0.5), transparent 45%),
    radial-gradient(circle at 75% 40%, rgba(160, 91, 255, 0.4), transparent 45%),
    linear-gradient(155deg, var(--bg-start), var(--bg-end));
  color: var(--text);
  overflow-x: hidden;
}

.page {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 48px 24px;
}

.scene {
  position: relative;
  width: min(720px, 100%);
  padding: 48px;
}

.glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 30% 40%, rgba(88, 120, 255, 0.35), transparent 54%),
    radial-gradient(circle at 70% 30%, rgba(162, 90, 255, 0.26), transparent 54%),
    radial-gradient(circle at 50% 80%, rgba(255, 255, 255, 0.08), transparent 45%);
  filter: blur(24px);
  animation: drift 18s ease-in-out infinite;
  border-radius: calc(var(--radius) + 12px);
}

@keyframes drift {
  0% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(6px, -12px) scale(1.02);
  }
  100% {
    transform: translate(0, 0) scale(1);
  }
}

.card {
  position: relative;
  padding: 42px 34px;
  border-radius: var(--radius);
  background: var(--card-bg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  overflow: hidden;
  z-index: 1;
}

.title {
  margin: 0;
  font-size: clamp(2.1rem, 5vw, 2.8rem);
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 12px 0 32px;
  font-size: clamp(1rem, 2.4vw, 1.15rem);
  color: var(--muted);
  max-width: 520px;
  line-height: 1.5;
}

.button-grid {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.tool-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  border-radius: 14px;
  background: linear-gradient(142deg, rgba(80, 96, 255, 0.22), rgba(158, 75, 255, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-decoration: none;
  color: inherit;
  font-weight: 600;
  min-width: 260px;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
  overflow: hidden;
}

.tool-button::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 35% 35%, rgba(92, 111, 255, 0.35), transparent 58%);
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 220ms ease, transform 220ms ease;
}

.tool-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 44px rgba(2, 5, 30, 0.32);
}

.tool-button:hover::after {
  opacity: 1;
  transform: scale(1);
}

.button-emoji {
  font-size: 1.4rem;
  display: inline-flex;
}

.button-label {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.button-hint {
  font-size: 0.85rem;
  color: rgba(243, 244, 255, 0.68);
  margin-top: 2px;
}

.footer {
  margin-top: 34px;
  font-size: 0.95rem;
  color: rgba(243, 244, 255, 0.65);
  text-align: center;
}

.footer-text {
  margin: 0 0 12px;
  font-size: 0.95rem;
}

.footer-copyright {
  margin: 8px 0;
  font-size: 0.85rem;
  color: rgba(255, 107, 107, 0.75);
  font-weight: 500;
}

.footer-contact {
  margin: 8px 0 0;
  font-size: 0.85rem;
  color: rgba(79, 127, 255, 0.8);
}

.footer-contact a {
  color: rgba(79, 127, 255, 1);
  text-decoration: none;
  font-weight: 600;
  transition: color 200ms ease;
}

.footer-contact a:hover {
  color: rgba(168, 85, 255, 1);
}

.tool-button.active {
  transform: translateY(-3px) scale(0.99);
  box-shadow: 0 18px 40px rgba(2, 5, 30, 0.36);
  background: linear-gradient(142deg, rgba(90, 113, 255, 0.35), rgba(222, 148, 255, 0.22));
}

.tool-button.active .button-hint {
  color: rgba(255, 255, 255, 0.9);
}

@media (max-width: 450px) {
  .card {
    padding: 32px 22px;
  }

  .tool-button {
    min-width: 100%;
    justify-content: center;
  }
}