:root{--ink:#18323f;--navy:#12344a;--blue:#2b718e;--sky:#e8f4f7;--ice:#f7fbfc;--orange:#d95e2f;--amber:#f3b64c;--green:#3e765f;--line:#d7e2e6;--muted:#5d7078;--max:1480px;--shadow:0 12px 36px rgba(18,52,74,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font:17px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
img,svg{max-width:100%;height:auto}a{color:#176486;text-decoration-thickness:.08em;text-underline-offset:.14em}a:hover{color:#0d4862}
.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;z-index:99;background:#fff;padding:.7rem 1rem;border:2px solid var(--navy)}
.site-header{border-bottom:1px solid var(--line);background:rgba(255,255,255,.97);position:sticky;top:0;z-index:30}
.header-inner{max-width:var(--max);margin:auto;padding:.72rem 1.25rem;display:flex;align-items:center;gap:1.4rem}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:var(--navy);min-width:250px}.brand img{width:48px}.brand-text strong{display:block;font-size:1.03rem;line-height:1.1}.brand-text span{font-size:.76rem;color:var(--muted)}
.nav-toggle{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:.55rem;padding:.55rem .75rem;font-weight:700}
.site-nav{margin-left:auto;display:flex;gap:.25rem;align-items:center;flex-wrap:wrap}.site-nav a{color:var(--ink);text-decoration:none;padding:.5rem .68rem;border-radius:.45rem;font-size:.92rem;font-weight:650}.site-nav a:hover,.site-nav a[aria-current=page]{background:var(--sky);color:var(--navy)}
.hero{background:linear-gradient(135deg,#e9f5f8 0%,#fff7ed 100%);border-bottom:1px solid var(--line)}
.hero-inner{max-width:var(--max);margin:auto;padding:4.3rem 1.25rem 4rem;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);gap:3rem;align-items:center}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--blue);font-weight:800;font-size:.78rem}.hero h1,.page-hero h1{font-size:clamp(2.2rem,4.2vw,4.7rem);line-height:1.04;margin:.55rem 0 1rem;color:var(--navy);letter-spacing:-.035em}.hero p{font-size:1.2rem;max-width:780px;color:#405d69}
.hero-panel{background:#fff;border:1px solid var(--line);border-radius:1.3rem;padding:1.4rem;box-shadow:var(--shadow)}.hero-panel h2{margin-top:0;font-size:1.25rem}.signal{display:grid;grid-template-columns:36px 1fr;gap:.7rem;padding:.65rem 0;border-top:1px solid var(--line)}.signal:first-of-type{border-top:0}.signal b{color:var(--navy)}
.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.35rem}.button{display:inline-flex;align-items:center;justify-content:center;padding:.78rem 1.05rem;border-radius:.58rem;background:var(--navy);color:#fff;text-decoration:none;font-weight:750}.button.secondary{background:#fff;color:var(--navy);border:1px solid var(--navy)}
.wrap{max-width:var(--max);margin:auto;padding:3rem 1.25rem}.section-head{max-width:850px;margin-bottom:1.5rem}.section-head h2{font-size:clamp(1.75rem,3vw,2.7rem);line-height:1.14;margin:.2rem 0;color:var(--navy)}.section-head p{color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.card{border:1px solid var(--line);border-radius:1rem;padding:1.25rem;background:#fff;box-shadow:0 4px 14px rgba(18,52,74,.035)}.card h3{margin:.15rem 0 .45rem;color:var(--navy);line-height:1.25}.card p{margin:.25rem 0 .85rem;color:#4e6570}.card a.stretch{font-weight:750}.icon{font-size:1.65rem;line-height:1}
.band{background:var(--ice);border-block:1px solid var(--line)}.safety-band{background:#fff4e9;border-block:1px solid #efcfac}.safety-band .card{border-color:#efcfac}
.page-hero{background:linear-gradient(120deg,var(--sky),#fff);border-bottom:1px solid var(--line)}.page-hero .inner{max-width:var(--max);margin:auto;padding:3rem 1.25rem}.page-hero h1{font-size:clamp(2rem,3.5vw,3.7rem);max-width:1000px}.page-hero p{font-size:1.12rem;max-width:900px;color:#49616c}
.breadcrumbs{font-size:.86rem;color:var(--muted);margin-bottom:1rem}.breadcrumbs a{color:inherit}
.layout{max-width:var(--max);margin:auto;padding:2.5rem 1.25rem;display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:3rem}.content{max-width:910px}.content h2{color:var(--navy);font-size:1.8rem;line-height:1.2;margin-top:2.2rem}.content h3{color:#244c5d;margin-top:1.5rem}.content li{margin:.38rem 0}.sidebar{align-self:start;position:sticky;top:90px}.sidebox{border:1px solid var(--line);border-radius:.8rem;padding:1rem;margin-bottom:1rem;background:var(--ice)}.sidebox h2,.sidebox h3{font-size:1rem;margin:0 0 .6rem;color:var(--navy)}.sidebox ul{padding-left:1.1rem;margin:.3rem 0}
.notice{border-left:5px solid var(--blue);background:var(--sky);padding:1rem 1.1rem;border-radius:.3rem;margin:1.3rem 0}.notice.danger{border-color:#b33b27;background:#fff0ed}.notice.caution{border-color:#c98618;background:#fff8e8}.notice.success{border-color:var(--green);background:#edf7f1}.notice strong{color:var(--navy)}
.table-wrap{overflow-x:auto}.compare{width:100%;border-collapse:collapse;margin:1rem 0}.compare th,.compare td{border:1px solid var(--line);padding:.7rem;text-align:left;vertical-align:top}.compare th{background:var(--sky);color:var(--navy)}
.guide-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem}.guide-link{display:block;border:1px solid var(--line);border-radius:.75rem;padding:1rem;text-decoration:none;background:#fff}.guide-link strong{display:block;color:var(--navy);margin-bottom:.25rem}.guide-link span{color:var(--muted);font-size:.92rem}
.tool{border:1px solid var(--line);border-radius:1rem;padding:1.25rem;background:#fff;box-shadow:var(--shadow)}.tool label{display:block;font-weight:700;margin:.8rem 0 .25rem}.tool input,.tool select,.tool textarea{width:100%;padding:.7rem;border:1px solid #aebfc6;border-radius:.45rem;font:inherit}.tool textarea{min-height:110px}.tool button{margin-top:1rem;border:0;border-radius:.5rem;background:var(--navy);color:#fff;padding:.75rem 1rem;font-weight:750;cursor:pointer}.result{margin-top:1rem;padding:1rem;border-radius:.6rem;background:var(--sky);white-space:pre-wrap}.checklist label{font-weight:500;display:flex;gap:.6rem;align-items:flex-start}.checklist input{width:auto;margin-top:.35rem}
.site-footer{background:var(--navy);color:#dfeaf0;margin-top:4rem}.footer-inner{max-width:var(--max);margin:auto;padding:2.5rem 1.25rem}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem}.site-footer h2,.site-footer h3{color:#fff;font-size:1rem}.site-footer a{color:#e8f4f7}.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:.35rem 0}.fineprint{border-top:1px solid #365568;margin-top:2rem;padding-top:1rem;color:#b8cbd4;font-size:.83rem}
.searchbar{display:flex;gap:.5rem;max-width:700px}.searchbar input{flex:1;padding:.8rem;border:1px solid var(--line);border-radius:.5rem;font:inherit}
@media(max-width:1050px){.grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.layout{grid-template-columns:1fr}.sidebar{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.nav-toggle{display:block}.site-nav{display:none;position:absolute;left:0;right:0;top:100%;padding:1rem;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.site-nav.open{display:grid}.site-nav a{padding:.75rem}.brand-text span{display:none}.hero-inner{grid-template-columns:1fr;padding-top:3rem}.grid{grid-template-columns:1fr}.guide-list{grid-template-columns:1fr}}
@media(max-width:540px){body{font-size:16px}.header-inner{padding:.65rem .85rem}.brand{min-width:0}.brand img{width:42px}.brand-text strong{font-size:.92rem}.wrap,.layout{padding-left:1rem;padding-right:1rem}.grid.four,.footer-grid{grid-template-columns:1fr}.hero-inner{padding-left:1rem;padding-right:1rem}.actions{display:grid}.button{width:100%}}