/* FILE: css/style.css | 完整交付，无省略 */
:root{--chrome-bg:#E8EAEE;--chrome-soft:#F4F5F8;--ink:#16181D;--muted:#5E6470;--line:#C9CDD6;--chrome-1:#DDE1E8;--chrome-2:#F7F8FA;--chrome-3:#B8BEC9;--iris:#7C6FF0;--bubble:#9FE7DC;--rose:#F2A9C4;--shadow:0 16px 40px rgba(22,24,29,.08);--shadow2:0 24px 56px rgba(22,24,29,.14);--container:min(1180px,calc(100% - 40px));}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--chrome-bg);color:var(--ink);font-family:"Space Grotesk",system-ui,sans-serif;line-height:1.6;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}:focus-visible{outline:2px solid var(--iris);outline-offset:3px}.container{width:var(--container);margin:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(232,234,238,.86);backdrop-filter:blur(18px);border-bottom:1px solid 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