:root{--c-bg: #ffffff;--c-surface: #f6f8fa;--c-border: #d9e1e8;--c-text: #1a2733;--c-text-soft: #51626f;--c-accent: #0b6e4f;--c-accent-soft: #e3f2ec;--c-accent-strong: #095c42;--c-warn: #9a3412;--radius: 8px;--shadow: 0 1px 3px rgba(16, 36, 50, .08);--font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: ui-monospace, "Cascadia Mono", "Segoe UI Mono", Consolas, monospace}*{box-sizing:border-box}html{font-family:var(--font);color:var(--c-text);background:var(--c-bg);font-size:16px;line-height:1.6;-webkit-text-size-adjust:100%}body{margin:0;min-height:100vh;display:flex;flex-direction:column}main{flex:1;width:100%;max-width:880px;margin:0 auto;padding:0 1rem 3rem}h1{font-size:1.7rem;line-height:1.25;margin:1.2rem 0 .4rem}h2{font-size:1.3rem;margin:2.2rem 0 .6rem}h3{font-size:1.05rem;margin:1.6rem 0 .4rem}p{margin:.7rem 0}a{color:var(--c-accent)}a:hover{color:var(--c-accent-strong)}.site-header{border-bottom:1px solid var(--c-border);background:var(--c-bg)}.site-header .inner,.site-footer .inner{max-width:880px;margin:0 auto;padding:.7rem 1rem;display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.brand{font-weight:700;font-size:1.15rem;text-decoration:none;color:var(--c-text)}.brand .tick{color:var(--c-accent)}.site-nav{display:flex;gap:.9rem;flex-wrap:wrap;font-size:.95rem}.site-nav a{text-decoration:none;color:var(--c-text-soft)}.site-nav a:hover{color:var(--c-accent)}.site-footer{border-top:1px solid var(--c-border);background:var(--c-surface);font-size:.88rem;color:var(--c-text-soft);margin-top:3rem}.site-footer .inner{flex-direction:column;align-items:flex-start;gap:.4rem;padding:1.2rem 1rem}.site-footer nav{display:flex;gap:1rem;flex-wrap:wrap}.tool-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:1rem;box-shadow:var(--shadow);margin:1rem 0 1.5rem}label{font-size:.85rem;color:var(--c-text-soft);display:block;margin-bottom:.15rem}input,select,button{font:inherit}input[type=text],input[type=number],select{width:100%;padding:.45rem .5rem;border:1px solid var(--c-border);border-radius:6px;background:var(--c-bg);color:var(--c-text)}input:focus,select:focus{outline:2px solid var(--c-accent);outline-offset:0;border-color:var(--c-accent)}input.invalid{border-color:var(--c-warn);background:#fff5f0}button{cursor:pointer;border:1px solid var(--c-border);border-radius:6px;background:var(--c-bg);padding:.45rem .9rem;color:var(--c-text)}button:hover{border-color:var(--c-accent);color:var(--c-accent-strong)}button.primary{background:var(--c-accent);border-color:var(--c-accent);color:#fff;font-weight:600}button.primary:hover{background:var(--c-accent-strong);color:#fff}button.subtle{border:none;background:none;color:var(--c-text-soft);padding:.3rem .5rem}button.subtle:hover{color:var(--c-warn)}table{border-collapse:collapse;width:100%;margin:.8rem 0;font-size:.95rem}th,td{border:1px solid var(--c-border);padding:.4rem .6rem;text-align:left}th{background:var(--c-surface);font-weight:600}.tc-grid-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.tc-grid input[type=text]{width:6.5rem;min-width:6.5rem}.tc-grid input[type=number]{width:4.2rem;min-width:4.2rem}.tc-grid td,.tc-grid th{white-space:nowrap}@media(max-width:640px){.tc-grid td,.tc-grid th{padding:.3rem .35rem}}.ad-slot{display:block;width:100%;margin:1.2rem auto}.ad-slot[data-size=leaderboard]{min-height:90px}.ad-slot[data-size=rect]{min-height:280px}.answer-capsule{background:var(--c-accent-soft);border-left:4px solid var(--c-accent);border-radius:0 var(--radius) var(--radius) 0;padding:.7rem 1rem;margin:.9rem 0}.updated{font-size:.85rem;color:var(--c-text-soft)}.related-tools ul{padding-left:1.2rem}.faq details{border:1px solid var(--c-border);border-radius:6px;padding:.55rem .8rem;margin:.45rem 0;background:var(--c-bg)}.faq summary{cursor:pointer;font-weight:600}@media print{.site-header,.site-footer,.ad-slot,.no-print,.tool-actions,article.tool-content{display:none!important}.tool-card{border:none;box-shadow:none;background:#fff;padding:0}main{max-width:none;padding:0}}@media(max-width:640px){h1{font-size:1.4rem}}
