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(width<=600px){.header nav{gap:12px;font-size:10px}.header nav a{white-space:nowrap}.header-inner{gap:10px;padding-left:14px;padding-right:14px}.brand{gap:6px;font-size:19px}.brand-box{font-size:18px}.header nav .nav-about{display:none}}.tool-symbol.symbol-word{font-size:14px;font-weight:600}.calc-extra{grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.calc-extra button{border:1px solid var(--line);border-radius:7px;min-height:44px;font-size:13px}.calc-tax{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:14px;display:grid}.calc-tax label{color:var(--muted);gap:5px;font-size:12px;display:grid}.calc-tax select{border:1px solid var(--line);background:var(--surface);width:100%;min-width:0;min-height:44px;color:var(--ink);font:inherit;border-radius:7px;padding:6px}.calc-tax button{background:var(--tint);min-height:44px;color:var(--accent);border:1px solid var(--line);border-radius:7px}.calc-shortcuts{flex-wrap:wrap;gap:8px 16px;margin-top:10px;font-size:12px;display:flex}.history-recall{text-align:right;width:100%;min-height:44px;color:var(--accent);font:inherit;overflow-wrap:anywhere;background:0 0;border:0;font-size:20px;font-weight:600;display:block}