*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--ink:#1a1a2e;--ink-mid:#4a4a6a;--ink-light:#8888aa;--accent:#1d4e89;--accent-light:#e8f0fb;--accent-mid:#4a7fc1;--gold:#c8861c;--gold-light:#fdf3e3;--success:#1a6b42;--success-light:#e8f5ee;--danger:#b53c2e;--danger-light:#fdecea;--border:rgba(26,26,46,0.12);--border-strong:rgba(26,26,46,0.22);--surface:#fff;--surface-off:#f7f6f2;--surface-warm:#fdf9f3;--radius:10px;--radius-lg:16px;--shadow:0 2px 16px rgba(26,26,46,0.08)}
body{font-family:'DM Sans',sans-serif;color:var(--ink);background:var(--surface-off);font-size:16px;line-height:1.75}
header{background:var(--ink);color:#fff;padding:0 2rem;display:flex;align-items:center;justify-content:space-between;height:60px;position:sticky;top:0;z-index:100}
.logo{font-family:'Lora',serif;font-size:1.25rem;text-decoration:none;color:#fff}
.logo span{color:#7eb3f0}
.header-nav{display:flex;align-items:center;gap:1.5rem}
.header-nav a{color:rgba(255,255,255,0.7);font-size:13px;text-decoration:none}
.header-nav a:hover{color:#fff}
.header-cta{background:var(--gold);color:#fff;padding:8px 18px;border-radius:6px;font-size:13px;font-weight:500;text-decoration:none}
.page-wrap{max-width:1060px;margin:0 auto;padding:2.5rem 1.25rem 5rem;display:grid;grid-template-columns:1fr 300px;gap:2rem;align-items:start}
.article{min-width:0}
.sidebar{position:sticky;top:76px}
.article-label{font-size:12px;font-weight:500;letter-spacing:0.08em;text-transform:uppercase;color:var(--accent-mid);margin-bottom:0.75rem}
h1{font-family:'Lora',serif;font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:600;line-height:1.2;margin-bottom:1rem}
.article-meta{font-size:13px;color:var(--ink-light);margin-bottom:2rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border)}
h2{font-family:'Lora',serif;font-size:1.35rem;font-weight:600;margin:2.25rem 0 0.75rem}
h3{font-family:'Lora',serif;font-size:1.1rem;font-weight:600;margin:1.5rem 0 0.5rem}
p{color:var(--ink-mid);margin-bottom:1rem}
a{color:var(--accent)}
strong{color:var(--ink);font-weight:500}
ul{padding-left:1.5rem;margin-bottom:1rem;color:var(--ink-mid)}
ul li{margin-bottom:6px}
.callout{border-radius:var(--radius);padding:1.1rem 1.25rem;margin:1.5rem 0}
.callout-blue{background:var(--accent-light);border-left:3px solid var(--accent)}
.callout-gold{background:var(--gold-light);border-left:3px solid var(--gold)}
.callout-green{background:var(--success-light);border-left:3px solid var(--success)}
.callout-label{font-size:11px;font-weight:600;letter-spacing:0.06em;text-transform:uppercase;margin-bottom:5px}
.callout-blue .callout-label{color:var(--accent)}
.callout-gold .callout-label{color:var(--gold)}
.callout-green .callout-label{color:var(--success)}
.callout-blue p{color:var(--ink);margin:0}
.callout-gold p{color:#7a5010;margin:0}
.callout-green p{color:#0d4a2a;margin:0}
.guide-table{width:100%;border-collapse:collapse;font-size:13px;margin:1.25rem 0}
.guide-table th{padding:10px;text-align:left;background:var(--surface-off);font-weight:500;color:var(--ink-mid);font-size:12px;border-bottom:1px solid var(--border)}
.guide-table td{padding:9px 10px;border-bottom:1px solid var(--border);vertical-align:top}
.guide-table tr:last-child td{border:none}
.guide-table tr:nth-child(even) td{background:var(--surface-off)}
.guide-table .cat{font-weight:500;color:var(--accent)}
.badge{display:inline-block;padding:2px 8px;border-radius:100px;font-size:11px;font-weight:500;white-space:nowrap}
.badge-green{background:var(--success-light);color:var(--success)}
.badge-amber{background:var(--gold-light);color:var(--gold)}
.badge-red{background:var(--danger-light);color:var(--danger)}
.toc{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.25rem;margin-bottom:2rem}
.toc h4{font-size:13px;font-weight:600;color:var(--ink-mid);letter-spacing:0.05em;text-transform:uppercase;margin-bottom:10px}
.toc ol{padding-left:1.25rem}
.toc li{font-size:13px;margin-bottom:5px}
.toc a{color:var(--accent);text-decoration:none}
.toc a:hover{text-decoration:underline}
.tool-embed{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin:2rem 0;box-shadow:var(--shadow)}
.tool-embed-header{background:var(--ink);color:#fff;padding:1rem 1.25rem}
.tool-embed-header h3{font-family:'Lora',serif;font-size:1rem;font-weight:600;color:#fff;margin:0}
.tool-embed-header p{font-size:12px;color:rgba(255,255,255,0.7);margin:2px 0 0}
.tool-embed-body{padding:1.25rem}
label.fl{display:block;font-size:12px;color:var(--ink-mid);margin-bottom:5px;font-weight:500}
select,input[type="date"],input[type="number"]{width:100%;padding:9px 12px;border:1px solid var(--border-strong);border-radius:var(--radius);font-family:'DM Sans',sans-serif;font-size:14px;outline:none;appearance:none;margin-bottom:12px}
select:focus,input:focus{border-color:var(--accent-mid);box-shadow:0 0 0 3px rgba(74,127,193,0.1)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.calc-btn{background:var(--accent);color:#fff;border:none;padding:10px 24px;border-radius:var(--radius);font-family:'DM Sans',sans-serif;font-size:14px;font-weight:500;cursor:pointer}
.calc-btn:hover{background:#163e70}
.result-box{background:var(--surface-warm);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem;margin-top:1rem;display:none}
.result-box.visible{display:block}
.result-row{display:flex;justify-content:space-between;font-size:13px;padding:5px 0;border-bottom:1px solid var(--border)}
.result-row:last-child{border:none}
.result-row .rl{color:var(--ink-mid)}
.result-row .rv{font-weight:500}
.result-highlight{background:var(--accent-light);border:1px solid rgba(74,127,193,0.3);border-radius:8px;padding:10px;margin-top:8px;text-align:center}
.result-highlight.green{background:var(--success-light);border-color:rgba(26,107,66,0.3)}
.result-highlight .big{font-family:'Lora',serif;font-size:1.4rem;font-weight:600;color:var(--accent);display:block}
.result-highlight.green .big{color:var(--success)}
.result-highlight .sub{font-size:11px;color:var(--ink-mid);margin-top:3px}
.calc-err{color:#b53c2e;font-size:13px;margin-top:6px;display:none}
.embed-disc{font-size:11px;color:var(--ink-light);margin-top:10px;line-height:1.5}
.flag-list{margin-top:8px}
.flag{padding:7px 12px;border-radius:7px;font-size:12px;font-weight:500;margin-bottom:6px}
.flag.red{background:var(--danger-light);color:var(--danger)}
.flag.amber{background:var(--gold-light);color:var(--gold)}
.flag.green{background:var(--success-light);color:var(--success)}
.sidebar-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem;margin-bottom:1.25rem;box-shadow:var(--shadow)}
.sidebar-card h4{font-family:'Lora',serif;font-size:0.95rem;font-weight:600;margin-bottom:10px}
.sidebar-card p{font-size:13px;color:var(--ink-mid);margin-bottom:12px}
.sidebar-link{display:flex;align-items:flex-start;gap:8px;padding:8px 0;border-bottom:1px solid var(--border);font-size:13px;text-decoration:none;color:var(--ink)}
.sidebar-link:last-child{border:none;padding-bottom:0}
.sidebar-link:hover{color:var(--accent)}
.sidebar-cta{background:linear-gradient(135deg,#1a1a2e,#2d3561);border-radius:var(--radius-lg);padding:1.25rem;color:#fff;text-align:center;margin-bottom:1.25rem}
.sidebar-cta h4{font-family:'Lora',serif;font-size:0.95rem;font-weight:600;margin-bottom:8px}
.sidebar-cta p{font-size:12px;color:rgba(255,255,255,0.7);margin-bottom:12px}
.sidebar-cta a{display:block;background:var(--gold);color:#fff;padding:9px 16px;border-radius:7px;font-size:13px;font-weight:500;text-decoration:none}
.disc{background:var(--gold-light);border:1px solid rgba(200,134,28,0.25);border-radius:var(--radius);padding:0.9rem 1.1rem;font-size:13px;color:#7a5010;margin:1.5rem 0;line-height:1.6}
footer{background:var(--ink);color:rgba(255,255,255,0.5);text-align:center;padding:2rem;font-size:12px;margin-top:3rem}
footer a{color:rgba(255,255,255,0.6);text-decoration:none;margin:0 8px}
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; background: none; border: none; flex-shrink: 0; }
.hamburger span { display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px; }
.mobile-menu { display: none; position: fixed; top: 60px; left: 0; right: 0; background: var(--ink); z-index: 200; padding: 1rem 1.25rem 1.5rem; border-top: 1px solid rgba(255,255,255,0.1); }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; color: rgba(255,255,255,0.85); text-decoration: none; padding: 11px 0; font-size: 15px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.mobile-menu a:last-child { border: none; }
@media (max-width:720px){html,body{overflow-x:hidden;max-width:100vw}*{box-sizing:border-box;max-width:100%}.page-wrap{grid-template-columns:1fr}.sidebar{position:static}.field-row{grid-template-columns:1fr}header{padding:0 0.75rem;height:56px}.header-nav{display:none}.header-cta{display:none}.hamburger{display:flex}.guide-table{font-size:11px}.guide-table th,.guide-table td{padding:6px}select,input[type="date"],input[type="number"]{max-width:100%;box-sizing:border-box}}