:root{--ink:#151b2d;--text:#314158;--muted:#65758b;--line:#dce5ef;--soft:#eef4f8;--canvas:#f6f7fb;--blue:#245bff;--green:#0f9f75;--shadow:0 18px 44px rgba(15,23,42,.1);--max:1440px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--canvas);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC",sans-serif;font-size:15px;line-height:1.58}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}button,input,select{font:inherit}.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:50;background:#111827;color:#fff;padding:8px 12px;border-radius:6px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}.header-inner{max-width:var(--max);margin:0 auto;padding:10px 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