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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: "IBM Plex Sans", "Segoe UI", Tahoma, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  background: var(--surface-base);
  color: var(--ink-body);
}

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

a {
  color: var(--action-primary);
}

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

h1, h2, h3, h4 {
  font-family: "IBM Plex Sans", "Segoe UI", Tahoma, sans-serif;
  color: var(--ink-strong);
  letter-spacing: -0.01em;
}

h1 { font-size: 1.8rem; font-weight: 600; }
h2 { font-size: 1.5rem; font-weight: 600; }
h3 { font-size: 1.3rem; font-weight: 500; }
h4 { font-size: 1.1rem; font-weight: 600; }
p  { font-size: 1rem; line-height: 1.6; margin-bottom: 0.5rem; }


.tc { text-align: center; }
.tl { text-align: left; }
.tu { text-transform: uppercase; }
.fw-7 { font-weight: 700; }
.fw-6 { font-weight: 600; }
.fw-4 { font-weight: 400; }
.fs-xs { font-size: 0.78rem; }
.fs-sm { font-size: 0.9rem; }
.fs-md { font-size: 1rem; }
.fs-lg { font-size: 1.22rem; }
.track { letter-spacing: 0.14em; }
.ink-strong { color: var(--ink-strong); }
.ink-body { color: var(--ink-body); }
.ink-muted { color: var(--ink-muted); }
.ink-action { color: var(--action-primary); }
.ink-light { color: #cbd5e1; }
.bg-base { background: var(--surface-base); }
.bg-raised { background: var(--surface-raised); }
.bg-sunken { background: var(--surface-sunken); }
.w-100 { width: 100%; }
.w-90 { width: 90%; }
.w-66 { width: 66%; }
.w-50 { width: 50%; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-1 { margin-bottom: 0; margin-top: 0.5rem; }
.mt-3 { margin-top: 1.5rem; }
.flex { display: flex; }
.wrap { flex-wrap: wrap; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.center { align-items: center; justify-content: center; }
.rel { position: relative; }
.z-1 { position: relative; z-index: 1; }
.rounded { border-radius: 14px; }
.list-none { list-style: none; }
.nowrap { white-space: nowrap; }