*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-surface-hover: #222632;
  --color-border: #2a2e3a;
  --color-text: #e8eaf0;
  --color-text-secondary: #8b90a0;
  --color-accent: #fbbf24;
  --color-accent-dim: rgba(251, 191, 36, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue",
    "PingFang SC", "Noto Sans SC", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 17, 23, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.header .container {
  display: flex;
  align-items: center;
  height: 56px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
}

.logo-icon {
  width: 28px;
  height: 28px;
}

.logo-text {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Hero */
.hero {
  padding: 64px 0 48px;
  text-align: center;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
}

/* Software Grid */
.software-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  padding-bottom: 80px;
}

.software-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.software-card:hover {
  background: var(--color-surface-hover);
  border-color: #3a3f50;
  transform: translateY(-2px);
}

.software-card:active {
  transform: translateY(0);
}

.card-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-icon svg {
  width: 32px;
  height: 32px;
}

.disk-cleaner-icon {
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

.eps-viewer-icon {
  background: rgba(99, 179, 237, 0.12);
  color: #63b3ed;
}

.card-content {
  flex: 1;
  min-width: 0;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.card-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-bottom: 14px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  transition: gap 0.2s;
}

.software-card:hover .card-link {
  gap: 8px;
}

/* Footer */
.footer {
  margin-top: auto;
  padding: 24px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* Responsive */
@media (max-width: 640px) {
  .hero {
    padding: 48px 0 32px;
  }

  .hero-title {
    font-size: 26px;
  }

  .hero-subtitle {
    font-size: 15px;
  }

  .software-grid {
    grid-template-columns: 1fr;
  }

  .software-card {
    padding: 20px;
  }
}