:root{--bg: #f4f7fb;--surface: #ffffff;--surface-tint: #eef7f5;--text: #111827;--muted: #5f6f84;--border: #dce5ef;--brand: #0f766e;--brand-dark: #0b5f59;--accent: #2563eb;--warn: #b45309;--shadow-sm: 0 10px 24px rgba(17, 24, 39, .06);--shadow: 0 22px 50px rgba(17, 24, 39, .1);--radius-sm: 12px;--radius: 18px;--radius-lg: 26px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text);background:linear-gradient(180deg,#ffffffc2,#f4f7fbf5),linear-gradient(90deg,#0f766e0d,#2563eb0a);line-height:1.55}a{color:var(--brand);text-underline-offset:.18em}a:hover{color:var(--brand-dark)}h1,h2,h3,p{overflow-wrap:anywhere}h1{max-width:14ch;margin:0 0 1rem;font-size:clamp(2.55rem,5vw,4.9rem);line-height:.96;letter-spacing:0}h2{margin:0 0 .9rem;font-size:clamp(1.55rem,2vw,2rem);line-height:1.08}h3{margin:0 0 .55rem}p{margin:0 0 1rem}.page-shell{width:min(100%,1240px);margin:0 auto;padding:1.5rem}.site-header,.site-footer{border:1px solid rgba(220,229,239,.95);border-radius:var(--radius-lg);background:#ffffffd1;box-shadow:var(--shadow-sm);backdrop-filter:blur(14px)}.site-header{display:flex;align-items:center;justify-content:space-between;gap:1.25rem;margin-bottom:1.75rem;padding:1rem 1.2rem}.brand{display:inline-flex;align-items:center;gap:.75rem;color:var(--text);font-weight:850;text-decoration:none}.brand-mark{display:grid;width:2.7rem;height:2.7rem;place-items:center;border-radius:14px;background:#0f766e;overflow:hidden}.brand-mark svg{display:block;width:100%;height:100%}.brand span:last-child{display:grid;line-height:1.15}.brand small{color:var(--muted);font-size:.86rem;font-weight:600}.top-nav{display:flex;flex-wrap:wrap;gap:.35rem}.top-nav a{border-radius:999px;color:var(--muted);font-weight:750;padding:.65rem .85rem;text-decoration:none}.top-nav a:hover{background:#eef7f5e6;color:var(--text)}.hero-card,.content-card,.calculator-shell,.site-footer{margin-bottom:1.5rem}.hero-card,.content-card,.calculator-shell{border:1px solid rgba(220,229,239,.95);border-radius:var(--radius-lg);background:#ffffffd6;box-shadow:var(--shadow-sm);padding:clamp(1.35rem,3vw,2rem)}.eyebrow{margin-bottom:.7rem;color:var(--brand);font-size:.8rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}.hero-copy{max-width:58ch;color:var(--muted);font-size:1.08rem}.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.4rem}.guide-hero h1{max-width:18ch}.tool-grid,.related-grid,.home-grid,.workflow-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}.tool-card,.related-card{display:block;height:100%;border:1px solid rgba(220,229,239,.96);border-radius:var(--radius);background:linear-gradient(180deg,#fffffff5,#f3faf8e0);color:inherit;padding:1rem;text-decoration:none;transition:transform .14s ease,border-color .14s ease,box-shadow .14s ease}.tool-card:hover,.related-card:hover{border-color:#0f766e4d;box-shadow:var(--shadow-sm);transform:translateY(-2px)}.tool-card strong,.related-card strong{display:block;color:var(--text);margin-bottom:.45rem}.tool-card span,.related-card span{color:var(--muted)}.step-card{border:1px solid rgba(220,229,239,.96);border-radius:var(--radius);background:#ffffffeb;padding:1rem}.step-number{display:inline-flex;width:2rem;height:2rem;align-items:center;justify-content:center;border-radius:999px;background:var(--surface-tint);color:var(--brand);font-weight:900;margin-bottom:.75rem}.calculator-main{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.72fr);gap:1.4rem;align-items:start}.input-panel,.result-card{border:1px solid rgba(220,229,239,.96);border-radius:var(--radius);background:#ffffffeb;padding:1.2rem}.result-card{position:sticky;top:1rem;background:#153451;color:#fff;box-shadow:var(--shadow)}.field-grid{display:flex;flex-wrap:wrap;gap:1rem}.input-field{display:grid;gap:.4rem;width:max-content;max-width:100%;margin-bottom:.75rem;font-weight:750}.input-field.compact input,.input-field.compact select{width:120px}.input-field.medium input,.input-field.medium select{width:190px}.input-wrap{display:flex;align-items:center;min-height:46px;border:1px solid rgba(196,211,227,.98);border-radius:var(--radius-sm);background:#f8fbfdf5;overflow:hidden}.unit{padding-left:.75rem;color:var(--muted)}input,select,textarea{font:inherit}.input-wrap input,.input-wrap select{min-height:44px;border:0;background:transparent;color:var(--text);padding:.55rem .75rem;width:100%}.input-wrap input:focus,.input-wrap select:focus{outline:none}.input-field.has-error .input-wrap{border-color:#b45309bf;background:#fff8ed;box-shadow:0 0 0 4px #b453091a}.field-error{display:none;color:#9a3412;font-size:.88rem;font-weight:650}.input-field.has-error .field-error{display:block}.action-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1rem}button,.button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;border:1px solid transparent;border-radius:999px;cursor:pointer;font:inherit;font-weight:850;padding:.8rem 1.1rem;text-decoration:none}.primary-button{background:var(--brand);color:#fff}.primary-button:hover{background:var(--brand-dark);color:#fff}.secondary-button{background:#edf5f4;color:var(--text)}.result-label{color:#a9f4e5;font-size:.82rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.result-value{color:#fff;font-size:clamp(1.8rem,4vw,2.45rem);font-weight:900;line-height:1.04}.result-muted{color:#d7e9f4}.result-list{display:grid;gap:.55rem;margin:1rem 0}.result-row{display:grid;grid-template-columns:1fr auto;gap:1rem;border-top:1px solid rgba(255,255,255,.16);padding-top:.55rem}.result-row strong{color:#fff}.comparison-table{width:100%;border-collapse:collapse;margin-top:1rem}.comparison-table th,.comparison-table td{border-bottom:1px solid rgba(220,229,239,.96);padding:.65rem;text-align:left}.formula-list{display:grid;gap:.75rem}.guide-body{max-width:78ch}.guide-body p,.guide-body li{color:#334155}.guide-section{display:grid;gap:.9rem}.guide-section+.guide-section{margin-top:2rem}.tool-cta{display:grid;gap:.75rem;max-width:760px;border:1px solid rgba(15,118,110,.18);border-radius:var(--radius);background:linear-gradient(180deg,#eef7f5f5,#fffffff0);padding:1rem}.tool-cta p{margin-bottom:0}.compact-link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem}.guide-table-wrap{max-width:760px;overflow-x:auto}.guide-table{width:100%;min-width:520px;border-collapse:collapse;border:1px solid rgba(220,229,239,.96);border-radius:var(--radius-sm);overflow:hidden}.guide-table th,.guide-table td{border-bottom:1px solid rgba(220,229,239,.96);padding:.75rem;text-align:left}.guide-table th{background:var(--surface-tint)}code{display:inline-block;max-width:100%;border:1px solid rgba(220,229,239,.96);border-radius:var(--radius-sm);background:#f8fbfd;padding:.55rem .7rem;overflow-x:auto}details{border:1px solid rgba(220,229,239,.96);border-radius:var(--radius-sm);background:#fff;padding:.9rem 1rem}summary{cursor:pointer;font-weight:850}.methodology-note,.disclaimer{border-radius:var(--radius);background:var(--surface-tint);color:var(--muted);padding:1rem}.handoff-card{display:flex;align-items:center;justify-content:space-between;gap:1rem}.handoff-card h2{margin-bottom:.35rem}.handoff-card p{max-width:68ch;color:var(--muted);margin-bottom:0}.handoff-card--compact{border:1px solid rgba(220,229,239,.95);border-radius:var(--radius-lg);background:#ffffffd6;box-shadow:var(--shadow-sm);margin-bottom:1.5rem;padding:clamp(1.35rem,3vw,2rem)}.site-footer{padding:1.25rem}.footer-top{display:flex;align-items:center;justify-content:space-between;gap:1.25rem}.contact-form{display:grid;gap:.8rem}.contact-field{display:grid;gap:.35rem;font-weight:750}.contact-form input,.contact-form textarea{width:100%;border:1px solid rgba(196,211,227,.98);border-radius:var(--radius-sm);background:#fff;color:var(--text);padding:.7rem .8rem}.contact-form textarea{min-height:110px;resize:vertical}.contact-field-error{display:none;color:#9a3412;font-size:.86rem;font-weight:650}.contact-field.has-error input,.contact-field.has-error textarea{border-color:#b45309bf;background:#fff8ed;box-shadow:0 0 0 4px #b453091a}.contact-field.has-error .contact-field-error{display:block}.contact-status{min-height:1.4rem;color:var(--brand);font-weight:750}.footer-links{display:flex;flex-wrap:wrap;gap:1rem;margin-top:1rem}.footer-links a{color:var(--text);font-weight:750;text-decoration:none}.footer-links a:hover{color:var(--brand)}@media(max-width:980px){.tool-grid,.related-grid,.home-grid,.workflow-grid,.compact-link-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.calculator-main{grid-template-columns:1fr}.result-card{position:static}}@media(max-width:720px){.page-shell{padding:.85rem}.site-header{align-items:flex-start;flex-direction:column}.top-nav{width:100%}.top-nav a{padding-left:0}.tool-grid,.related-grid,.home-grid,.workflow-grid,.compact-link-grid{grid-template-columns:1fr}.handoff-card,.footer-top{align-items:flex-start;flex-direction:column}.input-field,.input-field.compact input,.input-field.compact select,.input-field.medium input,.input-field.medium select{width:100%}}