/* ===== 嘿爪宠物官网公共样式（5 页共用） ===== */

:root {
  --hz-primary: #7D8B6F;
  --hz-primary-light: #A5B292;
  --hz-primary-soft: #EFF1E9;
  --hz-primary-dark: #63714F;
  --hz-bg: #F5F6F4;
  --hz-bg-warm: #F6F3ED;
  --hz-card: #FFFFFF;
  --hz-text-primary: #33302B;
  --hz-text-secondary: #7A746A;
  --hz-text-tertiary: #A9A399;
  --hz-divider: #E5E2DA;
  --hz-radius-sm: 8px;
  --hz-radius-md: 12px;
  --hz-radius-lg: 20px;
  --hz-radius-full: 999px;
  --font-serif: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--hz-text-primary);
  background: var(--hz-bg-warm);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===== 通用容器 ===== */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}
section { padding: 96px 0; }

/* ===== 顶部导航 ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(246, 243, 237, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.scrolled {
  border-bottom-color: var(--hz-divider);
  background: rgba(255, 255, 255, 0.9);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
}
.brand-logo {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: var(--hz-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(125, 139, 111, 0.32);
  overflow: hidden;
}
.brand-logo img { width: 100%; height: 100%; object-fit: cover; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 15px;
  color: var(--hz-text-secondary);
}
.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--hz-primary); }
.nav-links a.active { color: var(--hz-primary); font-weight: 600; }
.nav-cta {
  background: var(--hz-primary);
  color: white;
  padding: 8px 18px;
  border-radius: var(--hz-radius-full);
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}
.nav-cta:hover { background: var(--hz-primary-dark); transform: translateY(-1px); }

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--hz-radius-full);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s;
}
.btn-primary {
  background: var(--hz-primary);
  color: white;
  box-shadow: 0 8px 20px rgba(125, 139, 111, 0.3);
}
.btn-primary:hover { background: var(--hz-primary-dark); transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--hz-text-primary);
  border: 1.5px solid var(--hz-divider);
}
.btn-outline:hover { border-color: var(--hz-primary); color: var(--hz-primary); }

/* ===== 通用标题 ===== */
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}
.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: var(--hz-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 17px;
  color: var(--hz-text-secondary);
  line-height: 1.7;
}

/* ===== 内页 Hero（子页通用） ===== */
.page-hero {
  padding: 160px 0 80px;
  background:
    radial-gradient(circle at 20% 30%, rgba(125, 139, 111, 0.18) 0%, rgba(125, 139, 111, 0) 45%),
    linear-gradient(180deg, var(--hz-bg-warm) 0%, var(--hz-bg) 100%);
  text-align: center;
}
.page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.page-hero .page-sub {
  font-size: 18px;
  color: var(--hz-text-secondary);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== 通用内容卡片 ===== */
.content-block {
  max-width: 820px;
  margin: 0 auto;
}
.content-block h2 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  margin: 48px 0 20px;
  color: var(--hz-text-primary);
}
.content-block h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--hz-text-primary);
}
.content-block p {
  font-size: 16px;
  color: var(--hz-text-secondary);
  line-height: 1.85;
  margin-bottom: 16px;
}
.content-block ul {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 16px 0 24px;
}
.content-block ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--hz-text-secondary);
  line-height: 1.7;
}
.content-block ul li::before {
  content: "·";
  color: var(--hz-primary);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  flex-shrink: 0;
}

/* ===== 价值/信任卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.card-item {
  padding: 32px 28px;
  background: var(--hz-bg-warm);
  border-radius: var(--hz-radius-lg);
  border: 1px solid var(--hz-divider);
  transition: all 0.3s;
}
.card-item:hover {
  transform: translateY(-4px);
  border-color: var(--hz-primary-light);
  box-shadow: 0 16px 40px rgba(125, 139, 111, 0.12);
}
.card-icon {
  width: 48px; height: 48px;
  border-radius: var(--hz-radius-md);
  background: var(--hz-primary-soft);
  color: var(--hz-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}
.card-title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 8px;
}
.card-desc {
  font-size: 14px;
  color: var(--hz-text-secondary);
  line-height: 1.75;
}

/* ===== 二维码卡片 ===== */
.qr-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 880px;
  margin: 0 auto;
}
.qr-card {
  background: var(--hz-bg-warm);
  border: 1px solid var(--hz-divider);
  border-radius: var(--hz-radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all 0.3s;
}
.qr-card:hover {
  transform: translateY(-4px);
  border-color: var(--hz-primary-light);
  box-shadow: 0 16px 40px rgba(125, 139, 111, 0.12);
}
.qr-img-wrap {
  width: 180px; height: 180px;
  margin: 0 auto 16px;
  border-radius: var(--hz-radius-md);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--hz-divider);
  cursor: zoom-in;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}
.qr-img-wrap:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 20px rgba(125, 139, 111, 0.18);
}
.qr-img-wrap img { width: 100%; height: 100%; object-fit: contain; }
.qr-img-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--hz-text-tertiary);
  font-size: 12px;
  background:
    repeating-linear-gradient(45deg, var(--hz-primary-soft) 0 8px, transparent 8px 16px);
  gap: 6px;
}
.qr-img-placeholder .emoji { font-size: 28px; }
.qr-img-placeholder .text { font-weight: 600; color: var(--hz-text-secondary); }
.qr-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--hz-text-primary);
}
.qr-handle {
  font-size: 13px;
  color: var(--hz-text-secondary);
}
.qr-sub {
  font-size: 12px;
  color: var(--hz-text-tertiary);
  margin-top: 4px;
}

/* ===== 底部 ===== */
.footer {
  background: #2A2620;
  color: rgba(255,255,255,0.7);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 32px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: white;
  margin-bottom: 14px;
}
.footer-brand .brand-logo { background: var(--hz-primary); }
.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  max-width: 360px;
  margin-bottom: 16px;
}
.footer-contact {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
}
.footer-contact a { color: var(--hz-primary-light); }
.footer-col-title {
  color: white;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
}
.footer-col ul { list-style: none; display: grid; gap: 8px; font-size: 14px; }
.footer-col a { transition: color 0.2s; }
.footer-col a:hover { color: var(--hz-primary-light); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  opacity: 0.7;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a:hover { color: var(--hz-primary-light); }
.footer-note {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-top: 16px;
  line-height: 1.7;
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .card-grid, .card-grid.cols-2, .card-grid.cols-4 { grid-template-columns: 1fr; }
  .qr-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .nav-links a:not(.nav-cta) { display: none; }
  section { padding: 64px 0; }
  .page-hero { padding: 120px 0 60px; }
}

/* ===== 进入动画 ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }