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

:root {
  --sb-blue: #097EB3;
  --sb-blue-light: #E8F4FA;
  --sb-blue-mid: #0A6A96;
  --sb-dark: #1E302F;
  --sb-white: #FFFFFF;
  --sb-gray-50: #F5F7F7;
  --sb-gray-100: #EAEDED;
  --sb-gray-200: #D0D6D6;
  --sb-gray-text: #5E706F;
  --sb-orange: #E8792B;
  --sb-orange-light: #FDF0E6;
  --sb-orange-dark: #B35A18;
  --radius-md: 8px;
  --radius-lg: 12px;
  --font: 'DM Sans', system-ui, -apple-system, sans-serif;
}

body {
  font-family: var(--font);
  background: #EEF1F1;
  color: var(--sb-dark);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 40px 20px;
  -webkit-font-smoothing: antialiased;
}

/* ── Shell ── */
.shell {
  width: 100%;
  max-width: 720px;
  background: var(--sb-gray-50);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--sb-gray-200);
}

/* ── Header ── */
.header {
  background: var(--sb-white);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--sb-gray-100);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-left img {
  height: 44px;
  width: auto;
}

.header-divider {
  width: 1px;
  height: 22px;
  background: var(--sb-gray-200);
}

.header-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--sb-dark);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-name {
  font-size: 13px;
  color: var(--sb-gray-text);
}

.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--sb-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 500;
  color: white;
}

/* ── Accent bar ── */
.accent-bar {
  height: 3px;
  background: linear-gradient(90deg, var(--sb-orange) 0%, var(--sb-orange) 35%, var(--sb-blue) 100%);
}

/* ── Content ── */
.content {
  padding: 28px 24px;
}

.section-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--sb-gray-text);
  letter-spacing: 0.6px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

/* ── Tool grid ── */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

@media (max-width: 520px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }
}

.tool-card {
  background: var(--sb-white);
  border: 1px solid var(--sb-gray-200);
  border-radius: var(--radius-lg);
  padding: 22px;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
  border-top: 3px solid transparent;
}

.tool-card:hover {
  border-color: var(--sb-blue);
  transform: translateY(-2px);
}

.tool-card.orange-top { border-top-color: var(--sb-orange); }
.tool-card.blue-top   { border-top-color: var(--sb-blue); }

.tool-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tool-icon.orange { background: var(--sb-orange-light); }
.tool-icon.blue   { background: var(--sb-blue-light); }

.tool-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.tool-title {
  font-size: 16px;
  font-weight: 500;
}

.tool-desc {
  font-size: 13px;
  color: var(--sb-gray-text);
  line-height: 1.6;
  margin-bottom: 16px;
}

/* ── Tags ── */
.tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: var(--radius-md);
  font-weight: 500;
}

.tag.orange { background: var(--sb-orange-light); color: var(--sb-orange-dark); }
.tag.blue   { background: var(--sb-blue-light);   color: var(--sb-blue-mid); }

/* ── Footer ── */
.footer {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--sb-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-count {
  font-size: 12px;
  color: var(--sb-gray-text);
}

.footer-link {
  font-size: 12px;
  color: var(--sb-orange);
  cursor: pointer;
  font-weight: 500;
  text-decoration: none;
}

.footer-link:hover {
  text-decoration: underline;
}