:root{--brand: #122842;--brand-mid: #1a3a5c;--brand-soft: #edf2f8;--accent: #1f8a70;--accent-hover: #177a62;--accent-soft: #e6f4f1;--accent-border: #a8d5c8;--ink: #0e1c2c;--body: #2c3e52;--muted: #607080;--subtle: #8fa0b0;--bg: #f4f7fb;--panel: #ffffff;--raised: #f0f4f8;--line: #dde4ee;--line-soft: #ecf0f6;--warn-bg: #fffbf0;--warn-border: #f5d98a;--warn-text: #7a5c10;--radius: 10px;--radius-sm: 6px;--radius-lg: 16px;--shadow-xs: 0 1px 2px rgba(14,28,44,.06);--shadow-sm: 0 2px 8px rgba(14,28,44,.07), 0 1px 2px rgba(14,28,44,.04);--shadow: 0 4px 18px rgba(14,28,44,.09), 0 1px 4px rgba(14,28,44,.05);--shadow-lg: 0 12px 40px rgba(14,28,44,.11), 0 3px 10px rgba(14,28,44,.06);--ease: cubic-bezier(.22,1,.36,1);--dur: .17s;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;color-scheme:light;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*,*:before,*:after{box-sizing:border-box;margin:0}body{background:var(--bg);color:var(--body);line-height:1.65}h1,h2,h3,h4{color:var(--ink);line-height:1.18;letter-spacing:-.025em}p{margin:0 0 12px}p:last-child{margin-bottom:0}a{color:inherit;text-decoration:none}a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}img,svg{display:block;max-width:100%}.site-header{position:sticky;top:0;z-index:200;height:58px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 clamp(16px,4vw,48px);background:#fffffff7;border-bottom:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}.brand{display:inline-flex;align-items:center;gap:9px;color:var(--ink);font-weight:800;letter-spacing:-.02em;flex-shrink:0}.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:7px;background:linear-gradient(135deg,var(--brand) 0%,#1b5068 100%);color:#fff;font-size:.75rem;font-weight:800;flex-shrink:0}.brand-name{font-size:1rem}.nav{display:flex;align-items:center;gap:2px}.nav a{display:inline-flex;align-items:center;padding:5px 10px;border-radius:var(--radius-sm);font-size:.85rem;font-weight:500;color:var(--muted);transition:background var(--dur) var(--ease),color var(--dur) var(--ease)}.nav a:hover{background:var(--raised);color:var(--ink)}.site-footer{margin-top:80px;background:var(--panel);border-top:1px solid var(--line);padding:48px clamp(16px,4vw,48px) 36px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:start}.site-footer strong{display:block;font-size:.95rem;font-weight:800;color:var(--ink);margin-bottom:6px;letter-spacing:-.01em}.site-footer p{color:var(--muted);font-size:.875rem;max-width:520px;line-height:1.6}.fineprint{font-size:.78rem!important;color:var(--subtle)!important;margin-top:8px!important}.site-footer nav{display:flex;flex-direction:column;gap:6px;align-items:flex-end}.site-footer nav a{font-size:.83rem;color:var(--muted);padding:2px 0;transition:color var(--dur) var(--ease)}.site-footer nav a:hover{color:var(--accent)}main{min-height:68vh}.page-shell{width:min(1160px,calc(100% - 32px));margin:0 auto;padding:0 0 80px}.page-shell.narrow{width:min(820px,calc(100% - 32px));padding-top:36px}.home-hero{background:linear-gradient(160deg,#0d1e32,#122842 55%,#0f2438);padding:72px clamp(16px,4vw,48px) 64px}.home-hero-inner{max-width:860px;margin:0 auto}.home-eyebrow{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#ffffff80;margin-bottom:18px}.home-hero h1{font-size:clamp(2.3rem,5.5vw,3.8rem);color:#fff;line-height:1.08;letter-spacing:-.04em;max-width:20ch;margin-bottom:18px}.home-hero-sub{font-size:1.05rem;color:#ffffffad;max-width:560px;line-height:1.7;margin-bottom:32px}.btn-light{background:#fff;border-color:#fff;color:var(--brand)!important}.btn-light:hover{background:var(--brand-soft);border-color:var(--brand-soft);box-shadow:0 4px 14px #0000002e;transform:translateY(-1px)}.btn-ghost{background:transparent;border-color:#ffffff59;color:#ffffffd9!important}.btn-ghost:hover{background:#ffffff14;border-color:#fff9;box-shadow:none;transform:none}.pillar-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding-top:44px}.pillar{display:flex;flex-direction:column;padding:28px 24px 24px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease)}.pillar:hover{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft),var(--shadow-sm);transform:translateY(-3px)}.pillar-badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:20px;background:var(--accent-soft);color:var(--accent);font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;width:fit-content}.pillar h3{font-size:1.1rem;font-weight:700;letter-spacing:-.015em;color:var(--ink);margin-bottom:10px}.pillar p{font-size:.875rem;color:var(--muted);line-height:1.6;flex:1}.two-panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}.two-panel-col h2{font-size:1.3rem;margin-bottom:6px}.section-desc{font-size:.875rem;color:var(--muted);line-height:1.55;margin-bottom:20px}.two-panel-alt{background:var(--raised);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px}.link-list{list-style:none;padding:0;margin:0 0 20px}.link-list-item{border-bottom:1px solid var(--line-soft)}.link-list-item:last-child{border-bottom:none}.link-list-item a{display:block;padding:11px 0;transition:opacity var(--dur) var(--ease)}.link-list-item a:hover .link-list-title{color:var(--accent)}.link-list-title{display:block;font-size:.9rem;font-weight:600;color:var(--ink);margin-bottom:2px;transition:color var(--dur) var(--ease)}.link-list-desc{display:block;font-size:.8rem;color:var(--muted);line-height:1.45}.see-all-link{display:inline-flex;align-items:center;font-size:.86rem;font-weight:600;color:var(--accent);transition:color var(--dur) var(--ease)}.see-all-link:hover{color:var(--accent-hover)}.accessorial-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}.accessorial-card{display:block;padding:14px 16px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease),transform var(--dur) var(--ease)}.accessorial-card:hover{border-color:var(--accent-border);background:var(--accent-soft);transform:translateY(-2px)}.accessorial-card strong{display:block;font-size:.92rem;font-weight:700;color:var(--ink);margin-bottom:4px}.accessorial-card span{display:block;font-size:.8rem;color:var(--muted);line-height:1.45}.section{padding:44px 0}.section+.section{border-top:1px solid var(--line-soft)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}.section-head h2{font-size:clamp(1.15rem,2.2vw,1.55rem);margin-bottom:5px}.section-head p{color:var(--muted);font-size:.9rem;line-height:1.55;max-width:540px}.section-head>a{flex-shrink:0;font-size:.84rem;font-weight:600;color:var(--accent);white-space:nowrap;transition:color var(--dur) var(--ease)}.section-head>a:hover{color:var(--accent-hover)}.section h2{font-size:clamp(1.15rem,2.2vw,1.55rem);letter-spacing:-.025em}.button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 20px;border-radius:var(--radius-sm);border:1.5px solid var(--brand);background:var(--brand);color:#fff;font-size:.9rem;font-weight:700;letter-spacing:-.01em;cursor:pointer;transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease)}.button:hover{background:var(--brand-mid);border-color:var(--brand-mid);color:#fff;box-shadow:0 4px 12px #12284238;transform:translateY(-1px)}.button.secondary{background:transparent;color:var(--brand)}.button.secondary:hover{background:var(--brand-soft);box-shadow:none;transform:none}.cta-row{display:flex;flex-wrap:wrap;gap:10px}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}.card{display:flex;flex-direction:column;padding:20px 22px 22px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);min-height:140px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease)}.card:hover{border-color:#b8c8dc;box-shadow:var(--shadow);transform:translateY(-3px)}.eyebrow{display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:7px}.card h3{font-size:.96rem;font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--ink);margin:0 0 8px}.card p{font-size:.85rem;color:var(--muted);line-height:1.58;flex:1}.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:4px 6px;margin-bottom:26px;font-size:.8rem;color:var(--subtle)}.breadcrumbs a{color:var(--muted);transition:color var(--dur) var(--ease)}.breadcrumbs a:hover{color:var(--accent)}.page-title{font-size:clamp(1.8rem,4vw,2.7rem);letter-spacing:-.03em;color:var(--ink);margin-bottom:12px}.lede{color:var(--muted);font-size:1.05rem;line-height:1.72;max-width:600px;margin-top:10px}.article{padding-top:4px}.article-header{padding:20px 0 30px;border-bottom:2px solid var(--line)}.article-header .eyebrow{margin-bottom:10px}.article-header h1{font-size:clamp(1.8rem,4vw,2.7rem);letter-spacing:-.035em;line-height:1.1;color:var(--ink);margin-bottom:12px}.article-header .lede{margin-top:0}.meta{font-size:.8rem;color:var(--subtle);margin-top:14px}.editorial-note{font-size:.8rem;color:var(--subtle);line-height:1.55;max-width:660px;margin-top:8px}.article section{padding:28px 0}.article section+section,.article section+.checklist-block,.article section+.formula-box,.article section+.disclaimer-box,.article section+.faq-list,.article section+.related-links,.article .checklist-block+section,.article .formula-box+section,.article .disclaimer-box+section{border-top:1px solid var(--line-soft)}.article h2{font-size:clamp(1.1rem,2.2vw,1.42rem);letter-spacing:-.02em;margin-bottom:12px}.article h3{font-size:1rem;font-weight:700;margin-bottom:8px}.article p{color:var(--body);line-height:1.72}.article ul,.article ol{padding-left:22px;color:var(--body);line-height:1.7}.article li{margin-bottom:7px}.takeaways{background:var(--accent-soft);border:1px solid var(--accent-border);border-left:3px solid var(--accent);border-radius:var(--radius);padding:20px 22px;margin:4px 0}.takeaways h2{font-size:.95rem;font-weight:700;color:#0f5443;margin-bottom:10px}.takeaways ul{padding-left:18px;margin:0}.takeaways li{margin:6px 0;font-size:.91rem;line-height:1.55}.checklist-block{background:var(--raised);border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;margin:4px 0}.checklist-block h2{font-size:.95rem;font-weight:700;color:var(--ink);margin-bottom:10px}.check-list{padding-left:18px;margin:0}.check-list li{margin:7px 0;font-size:.9rem;color:var(--body);line-height:1.55}.formula-box{background:var(--brand-soft);border:1px solid #ccd8e8;border-radius:var(--radius);padding:18px 22px;margin:4px 0}.formula-box strong{display:block;font-size:.9rem;font-weight:700;color:var(--brand);margin-bottom:10px}.formula-box ul{padding-left:18px;margin:0}.formula-box li{margin:7px 0;font-size:.89rem;color:var(--body);line-height:1.55}.disclaimer-box{background:var(--warn-bg);border:1px solid var(--warn-border);border-radius:var(--radius);padding:14px 20px;margin:4px 0}.disclaimer-box strong{display:block;font-size:.76rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:#8a6010;margin-bottom:4px}.disclaimer-box p{font-size:.845rem;color:var(--warn-text);line-height:1.6}.faq-list{padding:28px 0 0}.faq-list>h2{font-size:1.2rem;margin-bottom:18px}.faq-item{padding:16px 0;border-bottom:1px solid var(--line-soft)}.faq-item:last-child{border-bottom:none}.faq-item h3{font-size:.95rem;font-weight:700;color:var(--ink);margin-bottom:7px;letter-spacing:-.01em}.faq-item p{font-size:.9rem;color:var(--body);line-height:1.65}.related-links{padding:24px 0 0}.related-links h2{font-size:1.05rem;margin-bottom:12px}.related-list{display:grid;gap:7px}.related-list a{display:block;padding:12px 14px;background:var(--raised);border:1px solid var(--line);border-radius:var(--radius-sm);transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease),transform var(--dur) var(--ease)}.related-list a:hover{border-color:#b8c8dc;background:var(--panel);transform:translate(3px)}.related-list span{display:block;font-size:.9rem;font-weight:700;color:var(--ink);margin-bottom:2px}.related-list small{display:block;font-size:.8rem;color:var(--muted);line-height:1.4}section>ul{padding-left:18px;margin:0}section>ul li{margin:8px 0;font-size:.875rem;color:var(--body);line-height:1.55}section>ul li a{color:var(--accent);font-weight:600;text-underline-offset:2px;transition:color var(--dur) var(--ease)}section>ul li a:hover{color:var(--accent-hover);text-decoration:underline}section>ul li span{color:var(--muted)}.alpha-list{padding-left:0;list-style:none;columns:2 240px;column-gap:24px;margin:0}.alpha-list li{break-inside:avoid;padding:7px 0;border-bottom:1px solid var(--line-soft);font-size:.9rem;line-height:1.45}.alpha-list li a{color:var(--accent);font-weight:600;transition:color var(--dur) var(--ease)}.alpha-list li a:hover{color:var(--accent-hover)}.alpha-list .meta{font-size:.8rem;color:var(--subtle)}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.tool-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px}.tool-panel h2{font-size:1.05rem;margin-bottom:16px}.tool-form{display:grid;gap:13px;margin-bottom:16px}.field{display:grid;gap:5px}.field label{font-size:.845rem;font-weight:600;color:var(--ink)}.field input{width:100%;min-height:42px;border:1px solid var(--line);border-radius:var(--radius-sm);padding:9px 12px;font:inherit;font-size:.93rem;color:var(--ink);background:var(--panel);appearance:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}.field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #1f8a7026}.result-box{background:var(--raised);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}.result-box dl{display:grid;grid-template-columns:1fr auto;gap:8px 18px;margin:0 0 10px}.result-box dt{font-size:.86rem;color:var(--muted);align-self:center}.result-box dd{font-size:.93rem;font-weight:800;color:var(--ink);margin:0;text-align:right}.result-box .meta{font-size:.79rem;color:var(--subtle)}.compact-article-section{margin-top:8px}.compact-article-section h3{font-size:.78rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--subtle);margin-bottom:8px;padding-bottom:6px;border-bottom:1px solid var(--line)}.compact-article-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:0}.compact-article-item{display:block;padding:8px 0;border-bottom:1px solid var(--line-soft);font-size:.88rem;font-weight:600;color:var(--ink);transition:color var(--dur) var(--ease)}.compact-article-item:hover{color:var(--accent)}.hero{display:grid;grid-template-columns:1fr minmax(240px,340px);align-items:center;gap:40px;padding:56px 0 36px}.hero h1{font-size:clamp(2rem,4.5vw,3.4rem);line-height:1.08;letter-spacing:-.038em;color:var(--ink);max-width:18ch}.hero-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-lg)}.lane-diagram{display:grid;gap:14px}.lane-row{display:grid;grid-template-columns:1fr 44px 1fr;align-items:center;gap:8px}.lane-node{padding:11px;background:var(--raised);border:1px solid var(--line);border-radius:var(--radius-sm);text-align:center;font-size:.87rem;font-weight:700;color:var(--ink)}.lane-line{height:2px;border-radius:1px;background:linear-gradient(90deg,var(--accent),#2ab89a)}.lane-diagram p{font-size:.845rem;color:var(--muted);line-height:1.55}@media(max-width:900px){.site-footer{grid-template-columns:1fr;gap:24px}.site-footer nav{flex-direction:row;flex-wrap:wrap;align-items:flex-start;gap:8px 18px}.pillar-grid{grid-template-columns:1fr;gap:12px;padding-top:32px}.pillar{flex-direction:row;align-items:flex-start;gap:16px}.pillar-badge{flex-shrink:0;margin-bottom:0;margin-top:2px}.pillar>div{flex:1}.two-panel-grid{grid-template-columns:1fr;gap:24px}.hero{grid-template-columns:1fr;padding:40px 0 24px}.hero-panel{display:none}.section-head{flex-direction:column;align-items:flex-start;gap:4px}}@media(max-width:600px){.home-hero{padding:48px clamp(16px,5vw,24px) 44px}.home-hero h1{font-size:clamp(2rem,9vw,2.8rem)}.nav a{padding:5px 7px;font-size:.8rem}.card-grid{grid-template-columns:1fr;gap:10px}.card{min-height:auto}.alpha-list{columns:1}.compact-article-grid,.result-box dl{grid-template-columns:1fr}.result-box dd{text-align:left}.article-header h1{font-size:clamp(1.65rem,7vw,2.2rem)}.pillar{flex-direction:column}}