/* ============================================================
   AI 咨询内容站 - 简洁商务白主题
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --c-bg: #ffffff;
  --c-bg-soft: #f7f8fa;
  --c-bg-muted: #eef1f5;
  --c-text: #1a2233;
  --c-text-soft: #5b6577;
  --c-text-mute: #8b94a5;
  --c-border: #e6e9ef;
  --c-primary: #2f6df6;
  --c-primary-dark: #1d52d6;
  --c-primary-soft: #eaf1ff;
  --c-accent: #0d1b2a;
  --c-accent-2: #14253d;
  --c-mint: #16c784;
  --c-violet: #7c5cff;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.04), 0 1px 3px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 4px 16px rgba(16, 24, 40, 0.06), 0 2px 6px rgba(16, 24, 40, 0.04);
  --shadow-lg: 0 18px 40px -12px rgba(16, 24, 40, 0.18);

  --container: 1280px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0; }

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: 0 4px 12px rgba(47, 109, 246, 0.25); }
.btn-primary:hover { background: var(--c-primary-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(47, 109, 246, 0.32); }
.btn-ghost { background: var(--c-bg); color: var(--c-text); border: 1px solid var(--c-border); }
.btn-ghost:hover { border-color: var(--c-primary); color: var(--c-primary); }
.btn-light { background: rgba(255,255,255,0.12); color: #fff; border: 1px solid rgba(255,255,255,0.22); backdrop-filter: blur(8px); }
.btn-light:hover { background: rgba(255,255,255,0.2); }
.btn-lg { padding: 14px 28px; font-size: 16px; }

/* ---------- 顶部导航 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: all 0.25s var(--ease);
}
.header.is-scrolled { border-bottom-color: var(--c-border); box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }

.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; letter-spacing: -0.02em; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--c-primary), #6aa1ff);
  display: grid; place-items: center; color: #fff; font-size: 16px;
}

.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu a {
  padding: 8px 14px; border-radius: var(--radius-sm); font-size: 15px;
  color: var(--c-text-soft); font-weight: 500;
}
.nav-menu a:hover { color: var(--c-primary); background: var(--c-primary-soft); }
.nav-actions { display: flex; align-items: center; gap: 10px; }

.lang-switch {
  padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600;
  border: 1px solid var(--c-border); color: var(--c-text-soft);
}
.lang-switch:hover { border-color: var(--c-primary); color: var(--c-primary); }

.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 8px; }
.nav-toggle span {
  display: block; width: 18px; height: 2px; background: var(--c-text); margin: 4px auto;
  transition: 0.25s var(--ease);
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 96px 0 80px;
  background:
    radial-gradient(900px 480px at 80% -10%, rgba(47, 109, 246, 0.10), transparent 60%),
    radial-gradient(700px 420px at 0% 30%, rgba(106, 161, 255, 0.08), transparent 60%),
    var(--c-bg);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px;
  background: var(--c-primary-soft); color: var(--c-primary);
  font-size: 13px; font-weight: 600; margin-bottom: 22px;
}
.hero-badge::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--c-primary); box-shadow: 0 0 0 4px rgba(47,109,246,0.18);
}
.hero-title { font-size: clamp(34px, 5vw, 54px); line-height: 1.1; font-weight: 800; }
.hero-title em { font-style: normal; color: var(--c-primary); }
.hero-sub { margin-top: 20px; font-size: 18px; color: var(--c-text-soft); max-width: 540px; }
.hero-cta { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }

/* Hero 信任条 */
.hero-trust { margin-top: 30px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.hero-trust-item { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--c-text-soft); }
.hero-trust-item svg { width: 16px; height: 16px; color: var(--c-mint); flex-shrink: 0; }

.hero-visual {
  position: relative; border-radius: 18px; overflow: hidden;
  background: linear-gradient(135deg, #eaf1ff, #f7f8fa);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.hero-visual::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(13,27,42,0.25));
}
.hero-stats {
  position: absolute; left: 18px; right: 18px; bottom: 18px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(8px);
  border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow-md);
}
.hero-stat .num { font-size: 22px; font-weight: 800; color: var(--c-accent); }
.hero-stat .label { font-size: 12px; color: var(--c-text-mute); }

/* 浮动装饰小卡片 */
.hero-float {
  position: absolute; top: 22px; right: 22px;
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 12px;
  background: rgba(255,255,255,0.94); backdrop-filter: blur(8px);
  box-shadow: var(--shadow-md); font-size: 13px; font-weight: 600; color: var(--c-text);
}
.hero-float .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-mint); box-shadow: 0 0 0 4px rgba(22,199,132,0.18); }

/* ---------- 通用 section ---------- */
.section { padding: 88px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head h2 { font-size: clamp(28px, 3.5vw, 38px); }
.section-head p { margin-top: 14px; color: var(--c-text-soft); font-size: 17px; }
.section-alt { background: var(--c-bg-soft); }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--c-primary); margin-bottom: 12px;
}

/* ---------- 服务卡片 ---------- */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  position: relative; overflow: hidden;
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 32px 28px;
  transition: all 0.25s var(--ease);
}
.service-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--c-primary), #6aa1ff);
  transform: scaleX(0); transform-origin: left; transition: transform 0.3s var(--ease);
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 52px; height: 52px; border-radius: 12px;
  background: var(--c-primary-soft); color: var(--c-primary);
  display: grid; place-items: center; margin-bottom: 20px;
}
.service-icon svg { width: 26px; height: 26px; }
.service-card h3 { font-size: 20px; margin-bottom: 10px; }
.service-card p { color: var(--c-text-soft); font-size: 15px; }
.service-num {
  position: absolute; right: 22px; top: 24px;
  font-size: 44px; font-weight: 800; color: var(--c-bg-muted);
  line-height: 1; font-family: "Segoe UI", Arial, sans-serif;
}

/* ---------- 文章卡片 ---------- */
.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card {
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
  transition: all 0.25s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card-cover { display: block; aspect-ratio: 16 / 9; overflow: hidden; background: var(--c-bg-muted); }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s var(--ease); }
.card:hover .card-cover img { transform: scale(1.06); }
.card-body { padding: 22px 22px 26px; display: flex; flex-direction: column; flex: 1; }
.card-meta { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--c-text-mute); margin-bottom: 12px; }
.tag { background: var(--c-primary-soft); color: var(--c-primary); padding: 3px 10px; border-radius: 999px; font-weight: 600; font-size: 12px; }
.card-title { font-size: 18px; line-height: 1.4; margin-bottom: 8px; }
.card:hover .card-title { color: var(--c-primary); }
.card-excerpt { color: var(--c-text-soft); font-size: 14.5px; flex: 1; margin-bottom: 16px;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-link { color: var(--c-primary); font-weight: 600; font-size: 14.5px; }

.section-foot { text-align: center; margin-top: 48px; }

/* ---------- 关于 ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-text h2 { font-size: clamp(28px, 3.5vw, 38px); margin-bottom: 20px; }
.about-text p { color: var(--c-text-soft); margin-bottom: 16px; font-size: 16.5px; }
.about-features { display: flex; flex-direction: column; gap: 16px; margin-top: 8px; }
.about-feature {
  display: flex; gap: 14px; padding: 18px;
  background: var(--c-bg); border: 1px solid var(--c-border); border-radius: var(--radius);
}
.about-feature .ico {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  background: var(--c-primary-soft); color: var(--c-primary); display: grid; place-items: center; font-size: 18px;
}
.about-feature h4 { font-size: 16px; margin-bottom: 2px; }
.about-feature span { font-size: 13.5px; color: var(--c-text-mute); }
.about-visual {
  position: relative; border-radius: 18px; overflow: hidden;
  box-shadow: var(--shadow-lg); border: 1px solid var(--c-border);
}
.about-visual img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ---------- 数据条 ---------- */
.metrics-strip { background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2)); color: #fff; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 56px 0; }
.metric-item { text-align: center; }
.metric-item .num { font-size: 38px; font-weight: 800; line-height: 1; letter-spacing: -0.02em; }
.metric-item .num .suffix { color: #6aa1ff; }
.metric-item .label { font-size: 14px; color: rgba(255,255,255,0.7); margin-top: 8px; }

/* ---------- 流程 ---------- */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.step-card { position: relative; padding: 28px 24px; background: var(--c-bg); border: 1px solid var(--c-border); border-radius: var(--radius); transition: all 0.25s var(--ease); }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.step-num {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), #6aa1ff); color: #fff;
  display: grid; place-items: center; font-weight: 800; font-size: 16px; margin-bottom: 16px;
  box-shadow: 0 6px 14px rgba(47,109,246,0.3);
}
.step-card h4 { font-size: 17px; margin-bottom: 8px; }
.step-card p { font-size: 14.5px; color: var(--c-text-soft); }

/* ---------- 联系 / CTA ---------- */
.cta {
  position: relative; overflow: hidden;
  background:
    radial-gradient(700px 360px at 80% 120%, rgba(47,109,246,0.35), transparent),
    linear-gradient(135deg, #0d1b2a, #14253d);
  color: #fff; border-radius: 22px; padding: 64px 56px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  box-shadow: var(--shadow-lg);
}
.cta h2 { font-size: clamp(26px, 3vw, 34px); color: #fff; }
.cta p { margin-top: 12px; color: rgba(255,255,255,0.78); font-size: 16px; }
.cta-form { display: flex; flex-direction: column; gap: 14px; }
.cta-form input, .cta-form textarea {
  width: 100%; padding: 14px 16px; border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.18); background: rgba(255,255,255,0.06);
  color: #fff; font-size: 15px; font-family: inherit;
  transition: all 0.2s var(--ease);
}
.cta-form input::placeholder, .cta-form textarea::placeholder { color: rgba(255,255,255,0.5); }
.cta-form input:focus, .cta-form textarea:focus {
  outline: none; border-color: var(--c-primary); background: rgba(255,255,255,0.1);
}
.cta-form textarea { resize: vertical; min-height: 96px; }
.cta-form .btn-primary { margin-top: 4px; }
.form-note { font-size: 14px; color: #6fcf97; min-height: 20px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--c-accent); color: rgba(255,255,255,0.7); padding: 60px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer .logo { color: #fff; margin-bottom: 16px; }
.footer-tagline { max-width: 320px; font-size: 14.5px; }
.footer-col h4 { color: #fff; font-size: 14px; margin-bottom: 16px; letter-spacing: 0.04em; text-transform: uppercase; }
.footer-col a { display: block; padding: 6px 0; font-size: 14.5px; color: rgba(255,255,255,0.7); }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
  font-size: 13.5px; color: rgba(255,255,255,0.5);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: #fff; }

/* ---------- 文章详情页 ---------- */
.article-hero { padding: 64px 0 32px; background: var(--c-bg-soft); border-bottom: 1px solid var(--c-border); }
.article-back { display: inline-flex; align-items: center; gap: 6px; color: var(--c-text-soft); font-size: 14px; margin-bottom: 20px; }
.article-back:hover { color: var(--c-primary); }
.article-cat { color: var(--c-primary); font-weight: 600; font-size: 14px; }
.article-hero h1 { font-size: clamp(26px, 4vw, 40px); margin: 12px 0 16px; max-width: 820px; }
.article-meta { color: var(--c-text-mute); font-size: 14px; }
.article-cover { max-width: 920px; margin: 32px auto; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.article-cover img { width: 100%; }
.article-body { max-width: 760px; margin: 0 auto; padding: 0 0 80px; font-size: 17px; color: var(--c-text); }
.article-body h2 { font-size: 26px; margin: 40px 0 14px; }
.article-body h3 { font-size: 20px; margin: 28px 0 10px; }
.article-body p { margin: 0 0 18px; color: var(--c-text-soft); line-height: 1.8; }
.article-body ul, .article-body ol { margin: 0 0 18px; padding-left: 22px; color: var(--c-text-soft); }
.article-body li { margin-bottom: 8px; line-height: 1.7; }
.article-body blockquote {
  margin: 24px 0; padding: 16px 22px; border-left: 3px solid var(--c-primary);
  background: var(--c-primary-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--c-text); font-style: italic;
}
.article-body code {
  font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 0.9em;
  background: var(--c-bg-muted); padding: 2px 6px; border-radius: 4px;
}
.article-body strong { color: var(--c-text); }

/* ---------- 响应式 ---------- */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { max-width: 540px; }
  .about-grid { grid-template-columns: 1fr; }
  .cta { grid-template-columns: 1fr; padding: 44px 32px; }
  .services-grid, .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .nav-menu, .nav-actions .btn { display: none; }
  .nav-toggle { display: block; }
  .nav-menu.is-open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 64px; left: 0; right: 0;
    background: var(--c-bg); border-bottom: 1px solid var(--c-border);
    padding: 12px 24px 20px; gap: 4px; box-shadow: var(--shadow-md);
  }
  .nav-menu.is-open a { padding: 12px 14px; }
  .nav-actions { gap: 8px; }
  .lang-switch { display: inline-flex; }

  .section { padding: 64px 0; }
  .services-grid, .articles-grid { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta { padding: 36px 22px; border-radius: 16px; }
  .hero { padding: 56px 0 64px; }
}

/* ---------- 进入动画 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
  .reveal.is-visible { opacity: 1; transform: none; }
}

/* ============================================================
   文章系统: 筛选条 / 计数 / 详情页 / 相关文章 / 404
   ============================================================ */

/* 文章计数行 */
.posts-count-line {
  margin-top: 14px; font-size: 14px; color: var(--c-text-mute);
}
.posts-count-line strong { color: var(--c-primary); font-size: 18px; margin: 0 4px; }

/* 分类筛选条 */
.filters {
  display: flex; flex-wrap: wrap; gap: 10px;
  justify-content: center; margin-bottom: 44px;
}
.filter-chip {
  padding: 8px 18px; border-radius: 999px;
  border: 1px solid var(--c-border); background: var(--c-bg);
  color: var(--c-text-soft); font-size: 14px; font-weight: 500;
  transition: all 0.2s var(--ease);
}
.filter-chip:hover { border-color: var(--c-primary); color: var(--c-primary); }
.filter-chip.is-active {
  background: var(--c-primary); color: #fff; border-color: var(--c-primary);
  box-shadow: 0 4px 12px rgba(47, 109, 246, 0.25);
}

/* 文章详情页 */
.article-wrap { max-width: 820px; padding: 56px 24px 80px !important; }
.article-back {
  display: inline-block; color: var(--c-text-soft); font-size: 14px; margin-bottom: 20px;
}
.article-back:hover { color: var(--c-primary); }
.article-cat { color: var(--c-primary); font-weight: 600; font-size: 14px; }
.article-h1 {
  font-size: clamp(26px, 4vw, 40px); line-height: 1.25; margin: 12px 0 16px;
}
.article-meta { color: var(--c-text-mute); font-size: 14px; display: flex; gap: 6px; flex-wrap: wrap; }
.article-cover { border-radius: var(--radius); overflow: hidden; margin: 28px 0; box-shadow: var(--shadow-md); }
.article-cover img { width: 100%; }

.article-body { font-size: 17px; color: var(--c-text); line-height: 1.85; }
.article-body h2 { font-size: 25px; margin: 36px 0 14px; }
.article-body h3 { font-size: 20px; margin: 26px 0 10px; }
.article-body p { margin: 0 0 18px; color: var(--c-text-soft); }
.article-body ul, .article-body ol { margin: 0 0 18px; padding-left: 24px; color: var(--c-text-soft); }
.article-body li { margin-bottom: 8px; }
.article-body blockquote {
  margin: 22px 0; padding: 16px 22px; border-left: 3px solid var(--c-primary);
  background: var(--c-primary-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--c-text);
}
.article-body code {
  font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 0.9em;
  background: var(--c-bg-muted); padding: 2px 6px; border-radius: 4px;
}
.article-body strong { color: var(--c-text); }

/* 文章标签 */
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 32px 0 8px; padding-top: 24px; border-top: 1px solid var(--c-border); }
.article-tag {
  font-size: 13px; color: var(--c-text-soft); background: var(--c-bg-soft);
  padding: 4px 12px; border-radius: 999px;
}

/* 相关文章 */
.article-related { margin-top: 40px; }
.related-title { font-size: 20px; margin-bottom: 16px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.related-card {
  display: block; border: 1px solid var(--c-border); border-radius: var(--radius-sm);
  overflow: hidden; transition: all 0.2s var(--ease);
}
.related-card:hover { border-color: var(--c-primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.related-cover { aspect-ratio: 16 / 9; background: var(--c-bg-muted); }
.related-cover img { width: 100%; height: 100%; object-fit: cover; }
.related-card span {
  display: block; padding: 12px 14px; font-size: 14px; line-height: 1.45; color: var(--c-text);
}

/* 404 */
.not-found { text-align: center; padding: 60px 0; }
.not-found h1 { font-size: 72px; color: var(--c-primary); margin-bottom: 12px; }
.not-found p { color: var(--c-text-soft); margin-bottom: 24px; }

@media (max-width: 640px) {
  .related-grid { grid-template-columns: 1fr; }
  .filters { justify-content: flex-start; }
}