/* ===== TRESUN-TECH approved master CSS — base.css (extracted from 01_TRESUN_APPROVED_MASTER_EXACT.html, unmodified) ===== */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.55}
a{color:inherit;text-decoration:none} img{display:block;max-width:100%}
.wrap{width:min(var(--max),calc(100% - 52px));margin:auto}