:root{--primary:#087e78;--deep:#075c58;--mint:#d5f3ee;--bg:#f7fbfa;--surface:#fff;--text:#203238;--body:#34484c;--muted:#586b70;--border:#ddeae6;--coral:#db796c;--lavender:#987ec8;--sea:#3aa8b3}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font:16px/1.75 system-ui,-apple-system,"Microsoft YaHei","PingFang SC",sans-serif}body.menu-open{overflow:hidden}a{color:var(--deep);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{color:var(--text);line-height:1.35}h1{font-size:clamp(28px,3vw,42px)}h2{font-size:clamp(22px,2vw,26px)}h3{font-size:19px}p{margin:.65em 0 1em}.container{width:min(1280px,calc(100% - 64px));margin:auto}.top{background:white;border-bottom:1px solid var(--border)}.top-inner{min-height:76px;display:flex;align-items:center;gap:30px}.brand{display:flex;gap:12px;align-items:center;flex:none}.brand strong{font-size:23px;display:block;line-height:1.2}.brand 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