:root{--bg: #ffffff;--text: #101010;--muted: #5a5a5a;--subtle: #797979;--line: #e2e2e2;--accent: #2563eb;--accent-2: #166534;--chip-bg: #eef2ff;--shadow: 0 8px 24px rgba(0, 0, 0, .06);--shadow-2: 0 12px 32px rgba(0, 0, 0, .09);--max: 880px;--gap: 18px;--r: 14px;--font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}main{padding-block:36px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.site-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 24px;background:#ffffffb8;backdrop-filter:saturate(140%) blur(14px);-webkit-backdrop-filter:saturate(140%) blur(14px);border-bottom:1px solid var(--line)}.logo{font-weight:700;letter-spacing:-.01em;color:var(--text);text-decoration:none;font-size:1.05rem}.nav{display:flex;gap:14px;align-items:center}.nav a{color:var(--muted);text-decoration:none;font-weight:500;font-size:.9rem}.nav a:hover{color:var(--text)}.nav a[aria-current=page]{color:var(--accent)}.hero{max-width:var(--max);margin:0 auto;padding:34px 24px 10px}.hero h1{font-size:clamp(1.6rem,1.2rem + 1.8vw,2.4rem);line-height:1.15;letter-spacing:-.02em;margin:0 0 14px}.lead{color:var(--muted);font-size:clamp(1rem,.94rem + .2vw,1.18rem);max-width:68ch;margin:0 0 22px}.cta{display:inline-block;padding:12px 18px;border-radius:10px;background:var(--accent);color:#fff;text-decoration:none;font-weight:600;box-shadow:var(--shadow)}.calculator-section{display:flex;justify-content:center;padding:18px 24px 8px}.calculator{width:100%;max-width:520px;display:grid;gap:14px;background:linear-gradient(180deg,#fff,#fff);padding:22px;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}.field{display:grid;gap:6px}.input-wrap{position:relative;align-items:center}.input{width:100%;padding:14px 56px 14px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--text);font:inherit;font-size:1rem;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb29}.suffix{position:absolute;right:14px;color:var(--subtle);font-size:.9rem;-webkit-user-select:none;user-select:none;pointer-events:none}.result{overflow:hidden;border-radius:10px;padding:18px;background:var(--chip-bg);border:1px solid #e2e3ff;justify-items:center;text-align:center;display:grid;align-content:center}.result-value{font-size:clamp(2rem,1.6rem + 1.1vw,2.9rem);font-weight:700;letter-spacing:-.02em;line-height:1;color:var(--accent)}.result-value .unit{font-size:.55em;color:var(--muted)}.result-meta{color:var(--muted);margin-top:8px}.detail{color:var(--subtle);font-size:.85rem;margin-top:10px}.actions{display:flex;gap:10px;justify-content:flex-end}.btn{padding:11px 14px;border-radius:9px;font-weight:600;cursor:pointer;border:0}.primary{background:var(--accent);color:#fff;box-shadow:var(--shadow)}.secondary{background:#fff;color:var(--text);border:1px solid var(--line)}.btn:active{transform:translateY(.5px)}.content,.faq,.privacy{max-width:var(--max);margin:0 auto;padding:8px 24px 6px}.content h2,.faq h2,.privacy h2{font-size:1.4rem;margin:38px 0 10px;letter-spacing:-.01em}.content h3{font-size:1.1rem;margin:24px 0 6px}.content p,.faq p,.privacy p{color:var(--muted);max-width:70ch}.content ul{margin:8px 0 8px 24px;padding:0;color:var(--muted)}.content li{margin:6px 0}.site-footer{max-width:var(--max);margin:40px auto 0;padding:22px 24px;border-top:1px solid var(--line);color:var(--subtle);font-size:.9rem}:focus-visible{outline:3px solid #4f46e5;outline-offset:2px}@media (max-width: 480px){.site-header{padding:12px 14px}.calculator{padding:16px}.actions{flex-direction:column}.btn{width:100%}}