@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600;700&family=DM+Mono:wght@400;500&display=swap');
:root{--bg:#ffffff;--bg2:#f8f9fa;--bg3:#f1f3f5;--border:#e5e7eb;--border2:#d1d5db;--text:#111827;--text2:#374151;--text3:#6b7280;--accent:#0066ff;--accent2:#0052cc;--accent-light:#eff6ff;--green:#16a34a;--green-bg:#f0fdf4;--amber:#d97706;--amber-bg:#fffbeb;--red:#dc2626;--red-bg:#fef2f2;--font:'DM Sans',system-ui,sans-serif;--font-mono:'DM Mono',monospace;--radius:8px;--radius2:14px;--shadow:0 1px 3px rgba(0,0,0,0.08);--shadow2:0 4px 16px rgba(0,0,0,0.1)}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:15px;line-height:1.6}
.nav{display:flex;align-items:center;gap:20px;padding:0 24px;height:58px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.nav-logo{font-size:20px;font-weight:700;color:var(--text);text-decoration:none;letter-spacing:-0.5px}
.nav-logo span{color:var(--accent)}
.nav-logo sup{font-size:10px;color:var(--text3);font-weight:500;vertical-align:super}
.nav-links{display:flex;gap:4px;margin-left:8px;overflow-x:auto;flex-shrink:1;-ms-overflow-style:none;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-link{font-size:13px;padding:5px 10px;border-radius:6px;color:var(--text2);text-decoration:none;transition:.15s}
.nav-link:hover,.nav-link.active{background:var(--accent-light);color:var(--accent)}
.nav-search{margin-left:auto;position:relative}
.nav-search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--text3);font-size:16px;pointer-events:none}
.nav-search input{padding:7px 12px 7px 32px;border:1px solid var(--border2);border-radius:8px;font-size:13px;width:220px;outline:none;font-family:var(--font)}
.nav-search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,102,255,0.08)}
.page-wrap{max-width:1200px;margin:0 auto;padding:24px 20px 60px}
.layout-with-sidebar{display:grid;grid-template-columns:1fr 240px;gap:28px;align-items:start}
@media(max-width:820px){.layout-with-sidebar{grid-template-columns:1fr}aside{display:none}}
.breadcrumb{font-size:12px;color:var(--text3);margin-bottom:14px;display:flex;align-items:center;gap:4px}
.breadcrumb a{color:var(--accent);text-decoration:none}
.breadcrumb-sep{color:var(--border2)}
.breadcrumb-current{color:var(--text2)}
.calc-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius2);box-shadow:var(--shadow);overflow:hidden;margin-bottom:24px}
.calc-box-header{padding:20px 24px 16px;border-bottom:1px solid var(--border);background:linear-gradient(135deg,var(--accent-light) 0%,#fff 100%)}
.calc-box-title-row{display:flex;align-items:center;gap:10px}
.calc-box-title{font-size:1.35rem;font-weight:700;color:var(--text)}
.calc-box-body{padding:22px 24px}
.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:20px;font-size:10px;font-weight:600;letter-spacing:0.3px}
.badge-popular{background:var(--amber-bg);color:var(--amber);border:1px solid #fcd34d}
.badge-au{background:var(--accent-light);color:var(--accent)}
.badge-new{background:var(--green-bg);color:var(--green)}
.field-group{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.f{display:flex;flex-direction:column;gap:5px}
.field-label{font-size:12px;font-weight:500;color:var(--text2)}
.field-input{padding:9px 12px;border:1px solid var(--border2);border-radius:var(--radius);font-size:14px;font-family:var(--font);outline:none;transition:.15s;background:var(--bg2)}
.field-input:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(0,102,255,0.08)}
.prefix-wrap{position:relative}
.prefix-wrap .field-prefix{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--text3);font-size:13px;pointer-events:none}
.prefix-wrap .field-input{padding-left:22px}
.calc-btn{width:100%;padding:13px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;font-family:var(--font);transition:.15s;margin-top:4px}
.calc-btn:hover{background:var(--accent2);transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,102,255,0.25)}
.result-box{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-top:18px;display:none}
.result-box.show{display:block}
.result-primary{font-size:2rem;font-weight:700;color:var(--accent);margin-bottom:4px}
.result-label{font-size:13px;color:var(--text3);margin-bottom:14px}
.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:12px}
.result-cell{background:#fff;border:1px solid var(--border);border-radius:6px;padding:10px 12px}
.result-cell-label{font-size:11px;color:var(--text3);margin-bottom:2px}
.result-cell-value{font-size:15px;font-weight:600;color:var(--text)}
.disclaimer-box{background:var(--amber-bg);border:1px solid #fcd34d;border-radius:6px;padding:10px 12px;font-size:12px;color:var(--amber);margin-top:10px}
.result-copy-btn{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--text3);background:#fff;border:1px solid var(--border2);border-radius:6px;padding:4px 10px;cursor:pointer;margin-top:8px;font-family:var(--font);transition:.15s}
.result-copy-btn:hover{border-color:var(--accent);color:var(--accent)}
aside .aside-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius2);padding:16px;margin-bottom:16px}
aside .aside-title{font-size:12px;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:10px}
aside ul{list-style:none}
aside ul li a{font-size:13px;color:var(--text2);text-decoration:none;display:block;padding:4px 0;transition:.15s}
aside ul li a:hover{color:var(--accent)}
.ad-unit{display:none;background:var(--bg3);border:1px dashed var(--border2);border-radius:8px;align-items:center;justify-content:center;font-size:11px;color:var(--text3);text-align:center;margin-bottom:16px}
.ad-unit-banner{height:90px}
.ad-unit-square{height:250px}
.faq-item{border-bottom:1px solid var(--border);padding:12px 0}
.faq-q{font-size:14px;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:space-between;color:var(--text)}
.faq-q::after{content:'+';font-size:18px;color:var(--text3);transition:.2s}
.faq-item.open .faq-q::after{content:'−'}
.faq-a{font-size:13px;color:var(--text2);display:none;padding-top:8px;line-height:1.6}
.faq-item.open .faq-a{display:block}
.section-h{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:4px}
.section-sub{font-size:13px;color:var(--text3);margin-bottom:16px}
.page-disclaimer{background:var(--bg3);border-top:1px solid var(--border);padding:12px 20px;font-size:11px;color:var(--text3);text-align:center;margin-top:32px}
.page-disclaimer a{color:var(--accent);text-decoration:none}
.footer{background:#111827;color:#9ca3af;padding:48px 24px 24px;margin-top:40px}
.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr 1fr;gap:28px;margin-bottom:32px}
.footer-brand .nav-logo{color:#fff}
.footer-brand p{font-size:13px;margin-top:8px;color:#6b7280;line-height:1.6;margin-bottom:12px}
.footer-brand h4{font-size:11px;font-weight:600;color:#e5e7eb;text-transform:uppercase;letter-spacing:0.6px;margin-bottom:10px;margin-top:14px}
.footer-brand a:not(.nav-logo){display:block;font-size:13px;color:#6b7280;text-decoration:none;padding:3px 0;transition:.15s}
.footer-brand a:not(.nav-logo):hover{color:#9ca3af}
.footer-stats{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.footer-stat-chip{font-size:11px;background:#1f2937;color:#9ca3af;padding:4px 10px;border-radius:20px;border:1px solid #374151}
.footer-col h4{font-size:11px;font-weight:600;color:#e5e7eb;text-transform:uppercase;letter-spacing:0.6px;margin-bottom:12px}
.footer-col a{display:block;font-size:13px;color:#6b7280;text-decoration:none;padding:3px 0;transition:.15s}
.footer-col a:hover{color:#fff}
.footer-col-sep{height:1px;background:#1f2937;margin:10px 0}
.footer-col-all{color:#6b7280;font-size:11px;font-weight:500;margin-top:4px}
.footer-col-all:hover{color:#9ca3af}
.footer-surprise-btn{background:transparent;border:1px solid #374151;color:#9ca3af;padding:9px 14px;border-radius:8px;font-size:12px;font-weight:500;cursor:pointer;font-family:var(--font);transition:.15s;width:100%;text-align:left}
.footer-surprise-btn:hover{border-color:#3b82f6;color:#fff;background:rgba(59,130,246,0.1)}
.footer-bottom{max-width:1200px;margin:0 auto;border-top:1px solid #1f2937;padding-top:20px;display:flex;align-items:center;justify-content:space-between;font-size:12px;flex-wrap:wrap;gap:8px}
.footer-bottom a{color:#6b7280;text-decoration:none;transition:.1s}
.footer-bottom a:hover{color:#9ca3af}
@media(max-width:1024px){.footer-inner{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:640px){.footer-inner{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column;align-items:flex-start}}
.hero{background:linear-gradient(135deg,#eff6ff 0%,#f8faff 60%,#fff 100%);padding:48px 24px 40px;text-align:center;border-bottom:1px solid var(--border)}
.hero h1{font-size:2.6rem;font-weight:800;color:var(--text);letter-spacing:-1px;line-height:1.15;margin-bottom:12px}
.hero h1 span{color:var(--accent)}
.hero p{font-size:16px;color:var(--text2);max-width:580px;margin:0 auto 20px}
.hero-search{display:flex;max-width:480px;margin:0 auto;background:#fff;border:2px solid var(--accent);border-radius:10px;overflow:hidden;box-shadow:var(--shadow2)}
.hero-search input{flex:1;padding:12px 16px;border:none;outline:none;font-size:15px;font-family:var(--font)}
.hero-search button{padding:12px 20px;background:var(--accent);color:#fff;border:none;cursor:pointer;font-size:14px;font-weight:600;font-family:var(--font)}
.hero-stats{display:flex;justify-content:center;gap:32px;margin-top:24px}
.hero-stat{text-align:center}
.hero-stat .hs-num{font-size:1.6rem;font-weight:800;color:var(--accent)}
.hero-stat .hs-label{font-size:12px;color:var(--text3)}
.cat-tabs{display:flex;gap:8px;padding:20px 24px 0;max-width:1200px;margin:0 auto;overflow-x:auto}
.cat-tab{padding:8px 16px;border-radius:20px;font-size:13px;font-weight:500;border:1px solid var(--border2);background:#fff;color:var(--text2);cursor:pointer;white-space:nowrap;transition:.15s;font-family:var(--font)}
.cat-tab:hover{border-color:var(--accent);color:var(--accent)}
.cat-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.calc-section{max-width:1200px;margin:0 auto;padding:0 24px}
.calc-section-title{font-size:18px;font-weight:700;margin:24px 0 12px;color:var(--text);display:flex;align-items:center;gap:10px}
.calc-cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-bottom:32px}
.calc-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius2);padding:16px;text-decoration:none;color:var(--text);transition:.2s;display:block}
.calc-card:hover{border-color:var(--accent);box-shadow:var(--shadow2);transform:translateY(-2px)}
.calc-card .cc-icon{font-size:22px;margin-bottom:8px}
.calc-card .cc-name{font-size:14px;font-weight:600;color:var(--text);margin-bottom:4px}
.calc-card .cc-desc{font-size:12px;color:var(--text3);line-height:1.5}
.calc-card .cc-badge{margin-top:8px}
@media(max-width:640px){.hero h1{font-size:1.8rem}.calc-cards-grid{grid-template-columns:1fr 1fr}.footer-inner{grid-template-columns:1fr 1fr}}

/* Fix hero search — overflow:hidden was clipping the dropdown */
.hero-search{overflow:visible;position:relative}
.hero-search input{border-radius:8px 0 0 8px}
.hero-search button{border-radius:0 8px 8px 0}

/* Calculator action buttons (Reset / Share / Print) */
.calc-actions{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
.action-btn{display:inline-flex;align-items:center;gap:5px;padding:7px 14px;border-radius:var(--radius);font-size:13px;font-weight:600;cursor:pointer;font-family:var(--font);transition:.15s;line-height:1;border:1.5px solid}
.action-btn-reset{background:#fff5f5;border-color:#fca5a5;color:#dc2626}
.action-btn-reset:hover{background:#fee2e2;border-color:#dc2626}
.action-btn-share{background:var(--accent);border-color:var(--accent);color:#fff}
.action-btn-share:hover{background:var(--accent2);border-color:var(--accent2)}
.action-btn-print{background:#f0fdf4;border-color:#86efac;color:#16a34a}
.action-btn-print:hover{background:#dcfce7;border-color:#16a34a}

/* Toast notification */
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(16px);background:#111827;color:#fff;padding:10px 20px;border-radius:8px;font-size:13px;font-weight:500;z-index:9999;opacity:0;transition:opacity .25s,transform .25s;pointer-events:none}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}

/* Recently viewed chips (homepage) */
.recent-section{max-width:1200px;margin:12px auto 0;padding:0 24px}
.recent-title{font-size:11px;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:0.6px;margin-bottom:8px}
.recent-chips{display:flex;flex-wrap:wrap;gap:6px}
.recent-chip{font-size:12px;padding:4px 12px;border:1px solid var(--border2);border-radius:20px;color:var(--text2);text-decoration:none;background:#fff;white-space:nowrap;transition:.15s}
.recent-chip:hover{border-color:var(--accent);color:var(--accent)}

/* Dropdown nav */
.nav-item{position:relative;display:flex;align-items:center}
.nav-item>.nav-link::after{content:'▾';font-size:9px;margin-left:3px;opacity:.6}
.nav-dropdown{position:absolute;top:calc(100% + 10px);left:0;background:#fff;border:1px solid var(--border2);border-radius:12px;box-shadow:0 8px 32px rgba(0,0,0,0.12);min-width:210px;padding:6px 0;display:none;z-index:500}
.nav-item:hover .nav-dropdown,.nav-item.open .nav-dropdown{display:block}
.nav-dropdown a{display:flex;align-items:center;gap:9px;padding:8px 14px;font-size:13px;color:var(--text2);text-decoration:none;transition:.1s;white-space:nowrap}
.nav-dropdown a:hover{background:var(--accent-light);color:var(--accent)}
.nav-dd-sep{height:1px;background:var(--border);margin:4px 0}
.nav-dd-all{color:var(--accent)!important;font-weight:600;font-size:12px!important}
@media(max-width:900px){.nav-dropdown{display:none!important}}

/* Back to top button */
.back-to-top{position:fixed;bottom:24px;right:24px;width:42px;height:42px;background:var(--accent);color:#fff;border:none;border-radius:50%;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(0,102,255,0.35);opacity:0;transform:translateY(16px);transition:opacity .25s,transform .25s;pointer-events:none;z-index:999;font-family:var(--font)}
.back-to-top.visible{opacity:1;transform:translateY(0);pointer-events:auto}
.back-to-top:hover{background:var(--accent2);box-shadow:0 6px 16px rgba(0,102,255,0.45);transform:translateY(-2px)}
@media print{.back-to-top{display:none}}

/* Print */
@media print{
  nav,.calc-actions,.calc-btn,footer,aside,.ad-unit,ins,.page-disclaimer,.result-copy-btn,.breadcrumb,.faq-item,.cat-tabs,.hero,.recent-section{display:none!important}
  .result-box{display:block!important;background:none;border:1px solid #ccc}
  .calc-box{box-shadow:none;border:1px solid #ccc}
  .page-wrap{padding:0;max-width:100%}
  .layout-with-sidebar{grid-template-columns:1fr}
}