html { color: var(--dua-color-text); background: var(--dua-color-canvas); font-family: var(--dua-font); font-size: 100%; }
body { min-height: 100vh; background: var(--dua-color-canvas); color: var(--dua-color-text); line-height: 1.6; }
h1, h2, h3 { color: var(--dua-color-ink); font-weight: 850; line-height: 1.14; letter-spacing: -.025em; }
h1 { font-size: clamp(2.15rem, 7vw, 4.6rem); }
h2 { font-size: clamp(1.45rem, 4vw, 2.25rem); }
h3 { font-size: 1.08rem; }
p { margin-bottom: 1rem; }
a { color: var(--dua-color-primary-dark); font-weight: 700; text-decoration-thickness: .1em; text-underline-offset: .2em; }
a:hover { color: var(--dua-color-ink); }
button, input, select, textarea { min-height: 44px; }
input, select, textarea { width: 100%; border: 1px solid var(--dua-color-line); border-radius: var(--dua-radius-sm); background: var(--dua-color-surface); color: var(--dua-color-ink); padding: .72rem .86rem; }
textarea { min-height: 7rem; resize: vertical; }
input::placeholder, textarea::placeholder { color: #7488a5; }
input:focus, select:focus, textarea:focus { border-color: var(--dua-color-primary); box-shadow: 0 0 0 4px rgb(7 140 244 / 14%); outline: 0; }
button { cursor: pointer; }
::selection { background: var(--dua-color-accent); color: var(--dua-color-ink); }