/* 长风工具箱 — 对齐 www twilight / id.cflmy.cn 极简黑白 */

.tools-body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  position: relative;
}

/* .site-header（统一顶栏）除外，交给 site/topbar.css 保持与「关于作者」顶栏一致（sticky / z-100） */
.tools-body > *:not(.bg-decoration):not(.site-header) {
  position: relative;
  z-index: 1;
}

.tools-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: var(--header-bg, rgba(255, 255, 255, 0.82));
  border-bottom: 1px solid var(--border);
}

.tools-topbar-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.tools-topbar-links {
  flex: 1;
}

.tools-topbar-user {
  display: flex;
  gap: 12px;
  align-items: center;
}

.tools-main {
  max-width: var(--site-max, 1100px);
  margin: 0 auto;
  padding: 56px 22px 80px;
}

.tools-hero {
  max-width: 36rem;
}

.tools-hero h1 {
  font-size: clamp(2rem, 4.2vw, 2.75rem);
  font-weight: 600;
  margin: 0 0 12px;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.tools-hero .lead {
  margin: 0;
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.65;
}

.tools-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 24px;
  padding: 12px 22px;
  border-radius: 980px;
  border: 1px solid var(--btn-accent-border, var(--text));
  background: var(--btn-accent-bg, var(--text));
  color: var(--btn-accent-text, var(--bg));
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: opacity 0.15s ease, background 0.15s ease;
}

.tools-cta:hover {
  opacity: 0.88;
  background: var(--accent-hover, #333);
  border-color: var(--accent-hover, #333);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 48px;
}

.tool-card {
  display: block;
  padding: 24px 22px;
  border-radius: 14px;
  background: var(--surface-solid, var(--bg));
  border: 1px solid var(--border);
  box-shadow: var(--btn-shadow, 0 1px 2px rgba(0, 0, 0, 0.06));
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

a.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--text);
  box-shadow: var(--shadow, 0 8px 28px rgba(0, 0, 0, 0.06));
}

.tool-card h2 {
  margin: 0 0 8px;
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.tool-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.tool-card--static {
  background: var(--bg-alt, #f5f5f7);
}

.tools-legal {
  max-width: 40rem;
  line-height: 1.7;
}

.tools-legal h1 {
  margin-top: 0;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.tools-legal .meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.tools-legal ul {
  padding-left: 1.2rem;
}

.tools-footer {
  max-width: var(--site-max, 1100px);
  margin: 0 auto;
  padding: 24px 22px 48px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.tools-footer a {
  color: inherit;
  text-decoration: none;
}

.tools-footer a:hover {
  color: var(--text);
}

.tools-footer-brand {
  color: var(--text);
  font-weight: 500;
}

/* —— 工具箱首页（hub）—— */

.hub-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 44px;
  align-items: center;
  padding-top: 4px;
}

.hub-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.hub-eyebrow::before {
  content: '';
  width: 26px;
  height: 1px;
  background: var(--text);
}

.hub-hero-copy h1 {
  font-family: "Songti SC", "SimSun", "Source Han Serif SC", serif;
  font-size: clamp(2.1rem, 4.6vw, 3rem);
  font-weight: 600;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  line-height: 1.22;
}

.hub-hero-copy .lead {
  max-width: 34rem;
}

.hub-cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.tools-cta--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.tools-cta--ghost:hover {
  background: var(--accent-soft, rgba(0, 0, 0, 0.06));
  border-color: var(--text);
  opacity: 1;
}

.hub-aside {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface, rgba(255, 255, 255, 0.6));
  padding: 6px 22px;
  box-shadow: var(--btn-shadow, 0 1px 2px rgba(0, 0, 0, 0.06));
}

.hub-aside-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.hub-aside-row:last-child {
  border-bottom: none;
}

.hub-aside-icon {
  width: 22px;
  height: 22px;
  flex: none;
  margin-top: 2px;
}

.hub-aside-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.hub-aside-desc {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.55;
}

.hub-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 32px;
  margin-top: 40px;
  padding: 14px 2px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.hub-stats b {
  color: var(--text);
  font-family: "Songti SC", "SimSun", serif;
  font-size: 1.05rem;
  font-weight: 600;
  margin-right: 6px;
}

.hub-section {
  margin-top: 8px;
}

.hub-section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin: 44px 0 16px;
}

.hub-section-head h2 {
  margin: 0;
  font-family: "Songti SC", "SimSun", "Source Han Serif SC", serif;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.hub-section-note {
  color: var(--muted);
  font-size: 0.88rem;
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

/* 跨列卡片在窄屏折行后，用 dense 回填空格，避免行内空洞 */
.hub-grid--bento {
  grid-auto-flow: dense;
}

.hub-grid .tool-card {
  display: flex;
  flex-direction: column;
  min-height: 190px;
  padding: 18px 18px 16px;
}

.tool-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.tool-icon {
  width: 24px;
  height: 24px;
}

.tool-idx {
  font-family: "Songti SC", "SimSun", serif;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.tool-card h2 {
  font-size: 1.05rem;
}

.tool-card p {
  font-size: 0.88rem;
  flex: 1;
}

.tool-card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
}

.tool-chip {
  font-size: 0.72rem;
  line-height: 1.6;
  padding: 1px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
}

.tool-go {
  font-size: 0.8rem;
  color: var(--muted);
  transition: transform 0.15s ease, color 0.15s ease;
}

a.tool-card:hover .tool-go {
  color: inherit;
  transform: translateX(3px);
}

.tool-bullets {
  margin: 10px 0 0;
  padding-left: 1.1rem;
  font-size: 0.85rem;
  line-height: 1.7;
  opacity: 0.85;
}

.tool-card--featured {
  grid-column: span 2;
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.tool-card--featured:hover {
  border-color: var(--text);
  box-shadow: var(--btn-primary-shadow, 0 2px 8px rgba(0, 0, 0, 0.18));
}

.tool-card--featured .tool-idx,
.tool-card--featured p {
  color: inherit;
  opacity: 0.75;
}

.tool-chip--on-dark {
  border-color: rgba(255, 255, 255, 0.35);
  color: inherit;
}

.tool-card--wide {
  grid-column: span 2;
}

.hub-note {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 190px;
  padding: 18px 20px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  color: var(--muted);
}

.hub-note-title {
  font-family: "Songti SC", "SimSun", serif;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.hub-note-desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  flex: 1;
}

.hub-note-meta {
  margin-top: 12px;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.hub-promo {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 56px;
  padding: 30px 32px;
  border-radius: 18px;
  background: var(--text);
  color: var(--bg);
}

.hub-promo-copy h2 {
  margin: 0 0 6px;
  font-family: "Songti SC", "SimSun", "Source Han Serif SC", serif;
  font-size: 1.3rem;
  font-weight: 600;
}

.hub-promo-copy p {
  margin: 0;
  font-size: 0.92rem;
  opacity: 0.8;
}

.hub-promo-cta {
  margin-top: 0;
  background: var(--bg);
  color: var(--text);
  border-color: var(--bg);
  flex: none;
}

.hub-promo-cta:hover {
  opacity: 0.9;
  background: var(--bg);
  border-color: var(--bg);
}

@media (max-width: 880px) {
  .hub-hero {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hub-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .tool-card--featured,
  .tool-card--wide,
  .hub-note {
    grid-column: span 1;
  }

  .hub-promo {
    padding: 24px 22px;
  }
}

.muted {
  color: var(--muted);
}

@media (max-width: 640px) {
  .tools-main {
    padding: 36px 18px 64px;
  }

  .tools-topbar-inner {
    padding: 12px 16px;
  }
}