:root {
  /* 对齐 https://www.bwda.net/ 实测色值 */
  --bg-base: #ffffff;
  --bg-section: #f6f8fc;
  --bg-soft: #f8f9fa;
  --bg-card: #ffffff;
  --bg-nav-tint: rgba(29, 97, 156, 0.1);

  --accent: #d93751;
  --accent-deep: #d93650;
  --accent-soft: #f43a58;
  --accent-magenta: #bf3a85;
  --accent-hot: #ec193b;

  --navy: #0f345b;
  --navy-2: #0f345c;
  --navy-3: #10355b;
  --navy-mid: #26537f;
  --blue: #147bd1;
  --blue-soft: #3386c4;
  --blue-tint: #1d619c;
  --pink: var(--accent-magenta);
  --red: var(--accent);
  --black: var(--text-primary);

  --text-primary: #000000;
  --text-secondary: #666666;
  --text-muted: #999999;
  --text-light: #707070;
  --text-hint: #858585;
  --text-on-dark: #ffffff;

  --line: #e0e7ef;
  --line-soft: #f1f1f1;
  --line-footer: #d6d6d6;

  --grad-cta: linear-gradient(160deg, #f43a58 10%, #bf3a85 80%);
  --grad-cta-hover: linear-gradient(160deg, #f43a58 10%, #ec193b 80%);
  --grad-hero: linear-gradient(135deg, #edf3f9 0%, #cae5ff 42%, #eef2f9 100%);
  --grad-product-overlay: linear-gradient(to bottom, transparent 0%, #d93650 100%);
  --shadow-header: 0px 10px 60px 0px rgb(0 0 0 / 5%);
  --shadow-card: 0 0 15px rgba(150, 150, 150, 0.1);
  --shadow-soft: 0 0 10px rgba(0, 0, 0, 0.1);

  --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --header-h: 90px;
  --radius: 10px;
  --radius-pill: 50px;
  --container: 1280px;
}

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

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1.35rem;
  color: var(--text-primary);
  background: var(--bg-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent);
}

ul,
ol {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.section {
  padding: 80px 0;
  position: relative;
  background: var(--bg-base);
}

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

.section__eyebrow {
  display: block;
  text-align: center;
  font-size: 16px;
  font-weight: 300;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.section__title {
  display: block;
  text-align: center;
  font-size: 30px;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.section__line {
  display: block;
  width: 50px;
  height: 2px;
  background: var(--accent);
  margin: 10px auto 20px;
}

.section__desc {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 45px;
  padding: 0 30px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.btn--primary {
  background-image: var(--grad-cta);
  color: #fff;
}

.btn--primary:hover {
  background-image: var(--grad-cta-hover);
  color: #fff;
  padding: 0 50px;
  box-shadow: 0 0 20px rgba(111, 111, 111, 0.5);
}

.btn--ghost {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: var(--radius-pill);
}

.btn--ghost:hover {
  background: var(--accent);
  color: #fff;
}

.btn--solid {
  background: var(--accent);
  color: #fff;
  border-radius: 0;
  min-height: 48px;
  padding: 0 48px;
  font-size: 16px;
  font-weight: 700;
}

.btn--solid:hover {
  background: var(--accent-hot);
  color: #fff;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border: 1px solid rgba(15, 52, 91, 0.18);
  border-radius: 4px;
  font-size: 12px;
  color: var(--navy);
  background: rgba(15, 52, 91, 0.04);
}

.page-hero {
  padding: calc(var(--header-h) + 56px) 0 56px;
  background: linear-gradient(180deg, #edf3f9 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
}

.page-hero .section__eyebrow {
  text-align: left;
  color: var(--accent);
}

.page-hero h1 {
  font-size: clamp(28px, 3.2vw, 40px);
  color: var(--navy);
  font-weight: 700;
  margin-bottom: 12px;
}

.page-hero p {
  color: var(--text-secondary);
  max-width: 720px;
  font-size: 16px;
  font-weight: 300;
}

@media (max-width: 960px) {
  :root {
    --header-h: 60px;
  }

  .section {
    padding: 48px 0;
  }

  .section__title {
    font-size: 20px;
  }

  .btn--primary {
    padding: 0 15px;
    min-height: 28px;
  }
}
.fade-up {
  animation: fadeUp 0.7s ease both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes underlineGrow {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}