/* ===== Base Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Microsoft YaHei", "Heiti SC", "PingFang SC", "Hiragino Sans GB", tahoma, arial, "\5B8B\4F53", sans-serif;
  color: #444;
  background: #fff;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body ul, body ol, body li, body dl, body dd, body dt, body p,
body h1, body h2, body h3, body h4, body h5, body h6 { margin: 0; padding: 0; }
body ul li, body dl dd, body dl dt { list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--c-primary); }
button { font: inherit; cursor: pointer; }
ul, ol { list-style: none; margin: 0; padding: 0; }

/* ===== Layout Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Typography ===== */
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.3; letter-spacing: .5px; }
h1 { font-size: clamp(2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }
p  { margin: 0 0 1em; }

.section-eyebrow {
  display: inline-block;
  font-size: .85rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--c-primary);
  padding: 4px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--c-primary) 15%, transparent);
  margin-bottom: 12px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-weight: 600;
  border-radius: 999px;
  border: none;
  transition: transform .2s, box-shadow .2s, opacity .2s;
  user-select: none;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  box-shadow: 0 8px 20px -8px color-mix(in srgb, var(--c-primary) 60%, transparent);
}
.btn-primary:hover { transform: translateY(-2px); color: #fff; }
.btn-ghost {
  color: var(--c-primary);
  background: #fff;
  border: 1.5px solid color-mix(in srgb, var(--c-primary) 40%, transparent);
}
.btn-ghost:hover { background: color-mix(in srgb, var(--c-primary) 8%, #fff); }