:root{--bg:#F6FAFC;--white:#fff;--soft:#EAF6FA;--soft2:#EDF4F8;--cyan:#25C8D1;--sky:#25B6E8;--blue:#1787DB;--deep:#174B78;--title:#183A56;--ink:#31485D;--sub:#687D8E;--line:#DCE9F0;--footer:#123653;font-family:Arial,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:26px}body{margin:0;overflow-x:hidden;line-height:1.8}a{color:var(--deep);text-underline-offset:4px}a:hover{color:#126cb0}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #168cc8;outline-offset:3px}button{font:inherit;cursor:pointer}img{max-width:100%}.container{width:min(100% - 56px,1180px);margin-inline:auto}.narrow{max-width:780px}.skip-link{position:absolute;left:16px;top:-100px;z-index:100;background:var(--white);padding:8px 16px}.skip-link:focus{top:12px}.site-header{background:var(--white);border-bottom:1px solid var(--line);position:relative;z-index:30}.topbar{height:72px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;text-decoration:none;min-width:0}.brand img{display:block;width:auto;height:auto;max-height:38px;max-width:220px;object-fit:contain}.brand-fallback{display:flex;flex-direction:column;line-height:1.15;color:var(--deep);letter-spacing:.04em}.brand-fallback strong{font-size:22px}.brand-fallback small{font-size:10px;letter-spacing:.2em}.topline{margin:0 auto;color:var(--sub);font-size:13px;letter-spacing:.12em}.entry-link{background:var(--deep);color:#fff;text-decoration:none;white-space:nowrap;border-radius:8px;padding:9px 18px;font-size:14px;font-weight:700}.entry-link:hover{background:#126a9c;color:white}.desktop-nav{background:var(--deep)}.nav-inner{display:flex;align-items:stretch;justify-content:space-between;gap:12px;min-height:48px}.desktop-nav 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@media(max-height:470px) and (max-width:640px){.mobile-bottom{position:static}body{padding-bottom:0}.back-top{bottom:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}