/* FAQ VEHICLE 品牌样式（电脑端）
   归属：cms 插件。依赖 /static/frontend/css/tokens.css 与 /static/frontend/css/pc.css
   首页与 vehicletools 插件页面共用本文件，色值一律取自设计令牌 */

.fv-main {
  background: var(--lr-bg);
  color: var(--lr-text);
}

.fv-wrap {
  width: min(1200px, calc(100% - 64px));
  margin-inline: auto;
}

.fv-section {
  padding: 96px 0;
  border-top: 1px solid var(--lr-border-subtle);
}

.fv-section-alt {
  background: var(--lr-bg-page);
}

.fv-eyebrow {
  margin: 0 0 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--lr-accent);
}

.fv-section-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.fv-section-title {
  margin: 0;
  font-size: clamp(32px, 3.6vw, 52px);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 800;
}

.fv-section-desc {
  margin: 20px 0 0;
  font-size: 17px;
  line-height: 1.7;
  color: var(--lr-text-secondary);
}

.fv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 26px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, transform .18s ease;
}

.fv-btn:hover {
  transform: translateY(-2px);
}

.fv-btn:focus-visible,
.fv-tool-card:focus-visible,
.fv-knowledge-card:focus-visible,
.fv-post:focus-visible {
  outline: 3px solid var(--lr-focus);
  outline-offset: 3px;
}

.fv-btn-accent {
  background: var(--lr-accent);
  border-color: var(--lr-accent);
  color: var(--lr-accent-ink);
}

.fv-btn-accent:hover {
  background: var(--lr-accent-hover);
}

.fv-btn-ghost {
  background: transparent;
  border-color: var(--lr-border-strong);
  color: var(--lr-text);
}

.fv-btn-ghost:hover {
  border-color: var(--lr-accent);
  color: var(--lr-accent);
}

.fv-hero {
  position: relative;
  overflow: hidden;
  padding: 112px 0 96px;
  background: var(--lr-hero-band);
}

.fv-hero::after {
  content: "";
  position: absolute;
  top: -200px;
  right: -180px;
  width: 660px;
  height: 660px;
  border: 1px solid var(--lr-border);
  border-radius: 50%;
  pointer-events: none;
}

.fv-hero-inner {
  position: relative;
}

.fv-hero-title {
  margin: 24px 0;
  font-size: clamp(52px, 7vw, 96px);
  line-height: 1.02;
  letter-spacing: -.035em;
  font-weight: 800;
}

.fv-hero-title span {
  color: var(--lr-accent);
}

.fv-hero-desc {
  max-width: 640px;
  margin: 0;
  font-size: 20px;
  line-height: 1.65;
  color: var(--lr-text-secondary);
}

.fv-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 40px;
}

.fv-hero-facts {
  display: flex;
  gap: 64px;
  margin-top: 80px;
}

.fv-hero-facts strong {
  display: block;
  font-size: 38px;
  line-height: 1.1;
  color: var(--lr-accent);
}

.fv-hero-facts span {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--lr-text-muted);
}

/* ---------- FEATURED TOOLS ---------- */

.fv-tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  counter-reset: fvtool;
}

.fv-tool-card {
  counter-increment: fvtool;
  display: flex;
  flex-direction: column;
  min-height: 300px;
  padding: 40px;
  border: 1px solid var(--lr-border);
  border-radius: 8px;
  background: var(--fv-surface);
  color: var(--fv-ink);
  text-decoration: none;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.fv-tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--lr-accent);
  box-shadow: var(--lr-shadow-card);
}

.fv-tool-index::before {
  content: counter(fvtool, decimal-leading-zero);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--fv-ink-muted);
}

.fv-tool-title {
  margin: 32px 0 14px;
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--fv-ink);
}

.fv-tool-desc {
  flex: 1;
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--fv-ink-muted);
}

.fv-tool-cta {
  margin-top: 32px;
  font-size: 14px;
  font-weight: 700;
  color: var(--fv-ink);
  border-bottom: 2px solid var(--lr-accent);
  align-self: flex-start;
  padding-bottom: 4px;
}

/* ---------- KNOWLEDGE LIBRARY ---------- */

.fv-knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.fv-knowledge-card {
  display: flex;
  flex-direction: column;
  padding: 32px;
  border: 1px solid var(--lr-border);
  border-radius: 6px;
  background: var(--lr-bg);
  color: var(--lr-text);
  text-decoration: none;
  transition: border-color .18s ease;
}

.fv-knowledge-card:hover {
  border-color: var(--lr-accent);
}

.fv-knowledge-card h3 {
  margin: 0 0 14px;
  font-size: 22px;
  color: var(--lr-text);
}

.fv-knowledge-card p {
  flex: 1;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--lr-text-muted);
}

.fv-link-more {
  display: inline-block;
  margin-top: 24px;
  font-size: 13px;
  font-weight: 700;
  color: var(--lr-accent);
}

/* ---------- LATEST GUIDES ---------- */

.fv-post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.fv-post {
  display: flex;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--lr-border);
  border-radius: 6px;
  background: var(--lr-bg-overlay);
  color: var(--lr-text);
  text-decoration: none;
  transition: border-color .18s ease;
}

.fv-post:hover {
  border-color: var(--lr-accent);
}

.fv-post-meta {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--lr-text-muted);
}

.fv-post-title {
  margin: 16px 0 12px;
  font-size: 20px;
  line-height: 1.35;
  color: var(--lr-text);
}

.fv-post-desc {
  flex: 1;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--lr-text-secondary);
}

/* ---------- ABOUT ---------- */

.fv-about-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: center;
}

.fv-about-text {
  margin: 24px 0 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--lr-text-secondary);
}

.fv-about-actions {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: stretch;
}

/* ---------- 工具页通用结构 ---------- */

.fv-breadcrumb {
  padding: 28px 0 0;
  font-size: 13px;
  color: var(--lr-text-muted);
}

.fv-breadcrumb a {
  color: var(--lr-accent);
  text-decoration: none;
}

.fv-page-title {
  margin: 16px 0;
  font-size: clamp(36px, 4.4vw, 60px);
  line-height: 1.08;
  letter-spacing: -.03em;
  font-weight: 800;
}

.fv-page-desc {
  max-width: 760px;
  margin: 0;
  font-size: 18px;
  line-height: 1.7;
  color: var(--lr-text-secondary);
}

.fv-page-head {
  padding: 64px 0 56px;
}

.fv-panel {
  padding: 40px;
  border: 1px solid var(--lr-border);
  border-radius: 8px;
  background: var(--lr-bg-overlay);
}

.fv-panel-title {
  margin: 0 0 24px;
  font-size: 22px;
  color: var(--lr-text);
}

.fv-notice {
  margin-top: 32px;
  padding: 20px 24px;
  border-left: 3px solid var(--lr-accent);
  background: var(--lr-bg-page);
  font-size: 14px;
  line-height: 1.7;
  color: var(--lr-text-secondary);
}