:root{
  --ink:#122b3d;--ink2:#405b6c;--muted:#6a7f8d;--line:#dce7ed;--line2:#cadbe5;
  --soft:#f6f9fb;--blue:#0868a5;--blue2:#07527f;--blue3:#edf7fc;--green:#2f7d5b;
  --green3:#eef8f2;--amber:#9e741c;--amber3:#fff8e8;--wrap:1280px;--read:860px;
  --shadow:0 14px 38px rgba(18,48,70,.07)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:var(--blue2)}
.wrap{width:min(calc(100% - 40px),var(--wrap));margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;z-index:100;background:#fff;border:2px solid var(--blue);padding:10px 14px;border-radius:8px}
.top{background:#0d2536;color:#cddde6;font-size:.77rem}.top .wrap{display:flex;justify-content:space-between;gap:20px;padding:7px 0}.top a{color:#fff}
.header{border-bottom:1px solid var(--line);background:rgba(255,255,255,.98);position:sticky;top:0;z-index:20}.headerin{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink)}.brandmark{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:linear-gradient(145deg,var(--blue),#0d89cb);color:#fff;font-weight:600;box-shadow:0 8px 22px rgba(8,104,165,.2)}
.brandcopy{display:flex;flex-direction:column;line-height:1.05}.brandcopy strong{font-size:.98rem;font-weight:600}.brandcopy span{margin-top:5px;font-size:.7rem;color:var(--muted)}
.nav{display:flex;align-items:center;gap:2px;flex-wrap:wrap;justify-content:flex-end}.nav a{padding:9px 10px;border-radius:9px;text-decoration:none;color:var(--ink);font-size:.86rem;font-weight:550}.nav a:hover{background:var(--blue3);color:var(--blue2)}
.mast{border-bottom:1px solid var(--line);background:radial-gradient(circle at 88% 10%,rgba(8,104,165,.08),transparent 29%),linear-gradient(180deg,#fcfeff 0,#f7fafc 100%)}
.crumb{padding-top:24px;font-size:.79rem;color:#748996}.crumb a{color:#587083}
.mastgrid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(420px,.95fr);gap:46px;align-items:center;padding:34px 0 50px}
.kicker{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;font-weight:600;color:var(--blue)}
h1{font-size:clamp(2.45rem,4.25vw,4.35rem);line-height:1.02;letter-spacing:-.045em;margin:14px 0 18px;font-weight:600;max-width:15ch}
.deck{font-size:clamp(1.04rem,1.45vw,1.18rem);color:#496374;max-width:74ch;margin:0}
.mastmeta{margin-top:23px;display:flex;gap:10px 24px;flex-wrap:wrap;color:#657b8a;font-size:.82rem}.mastmeta span{display:flex;align-items:center;gap:8px}.mastmeta i{width:6px;height:6px;border-radius:50%;background:var(--green)}
.herovisual{margin:0}.heroimg{display:block;width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;border-radius:18px;box-shadow:var(--shadow);border:1px solid var(--line2)}.herovisual figcaption{margin-top:8px;font-size:.75rem;color:#748895;line-height:1.45}
.systembar{border-bottom:1px solid var(--line);background:#fff}.systemgrid{display:grid;grid-template-columns:1.1fr repeat(4,1fr)}
.system{padding:17px 18px;border-right:1px solid var(--line)}.system:first-child{padding-left:0}.system:last-child{border-right:0}.system small{display:block;font-size:.65rem;text-transform:uppercase;letter-spacing:.07em;color:#748895}.system strong{display:block;font-size:.9rem;font-weight:600;margin:4px 0}.system span{display:block;font-size:.78rem;color:#647b8a}
.main{padding:58px 0 80px}.articlegrid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:54px}.article{max-width:var(--read)}
.sidebox{position:sticky;top:96px;border-top:3px solid var(--ink);padding-top:14px}.sidebox h2{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;margin:0 0 10px;font-weight:600}.sidebox ul{list-style:none;padding:0;margin:0}.sidebox li{border-top:1px solid var(--line);padding:10px 0}.sidebox li:first-child{border-top:0}.sidebox a{font-size:.82rem;color:#526c7d;text-decoration:none}.sidebox a:hover{color:var(--blue)}.sidenote{margin-top:22px;padding-top:16px;border-top:1px solid var(--line);font-size:.78rem;color:#728692}
.answer{border-left:4px solid var(--blue);background:var(--blue3);padding:20px 22px;margin-bottom:34px}.answer small{display:block;font-size:.66rem;text-transform:uppercase;letter-spacing:.08em;color:var(--blue);font-weight:600}.answer p{font-size:1.05rem;line-height:1.62;color:#31566d;margin:7px 0 0}
.section{padding:8px 0 32px}.section h2{font-size:clamp(1.72rem,2.8vw,2.32rem);line-height:1.13;letter-spacing:-.03em;margin:18px 0 14px;font-weight:600}.section h3{font-size:1.1rem;line-height:1.3;margin:22px 0 8px;font-weight:600}.section p{margin:0 0 15px;color:#435d6e}.section strong{font-weight:600;color:#223f53}.section ul{padding-left:1.25rem;color:#435d6e}.section li{margin:.45rem 0}
.matrix{width:100%;border-collapse:collapse;border-top:2px solid var(--ink);border-bottom:1px solid var(--line);margin:19px 0}.matrix th,.matrix td{text-align:left;vertical-align:top;padding:12px 11px;border-bottom:1px solid var(--line);font-size:.88rem}.matrix th{font-weight:600;background:#f7fafb;color:#26485e}.matrix th:first-child{width:20%}.matrix td{color:#4b6474}.matrix strong{display:block;font-weight:600;color:#26475b;margin-bottom:2px}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin:20px 0}.card{border:1px solid var(--line);padding:19px 20px;background:#fff}.card small{display:block;font-size:.65rem;text-transform:uppercase;letter-spacing:.07em;color:var(--blue);font-weight:600}.card h3{margin:6px 0 8px;font-size:1.04rem}.card p{font-size:.89rem;margin:0}.card a{font-size:.82rem;font-weight:600}
.tip{background:var(--green3);border-left:4px solid var(--green);padding:17px 19px;margin:20px 0}.tip strong{display:block;margin-bottom:4px}.warn{background:var(--amber3);border-left:4px solid var(--amber);padding:17px 19px;margin:20px 0}
.steps{counter-reset:n;margin-top:10px}.step{display:grid;grid-template-columns:38px 1fr;gap:13px;padding:14px 0;border-top:1px solid var(--line)}.step:first-child{border-top:0}.step:before{counter-increment:n;content:counter(n);width:29px;height:29px;border-radius:50%;display:grid;place-items:center;background:#edf4f8;color:#416076;font-size:.77rem;font-weight:600}.step strong{display:block;margin-bottom:3px}.step p{margin:0;font-size:.89rem}
.crosslink{border-top:3px solid var(--ink);border-bottom:1px solid var(--line);padding:20px 0;margin:24px 0}.crosslink h3{margin:0 0 6px}.crossgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 22px;margin-top:13px}.crossgrid a{font-size:.86rem;font-weight:600;text-decoration:none}
.faq details{border-top:1px solid var(--line);padding:14px 0}.faq details:first-of-type{border-top:0}.faq summary{cursor:pointer;font-weight:600;color:#29485d}.faq p{margin:9px 0 0;font-size:.91rem}
.sources{border-top:3px solid var(--ink);padding-top:15px}.source{display:grid;grid-template-columns:40px 1fr;gap:13px;padding:12px 0;border-top:1px solid var(--line)}.source:first-of-type{border-top:0}.source b{font-size:.71rem;color:#748895}.source strong{display:block;font-size:.9rem}.source span{display:block;font-size:.81rem;color:#6a7f8d;margin-top:2px}.source a{font-size:.79rem}
.shopcta{margin:26px 0 8px;border:1px solid var(--line2);border-left:4px solid var(--blue);background:linear-gradient(90deg,#f7fbfd 0,#fff 72%);padding:20px 22px}.ctagrid{display:grid;grid-template-columns:1fr auto;gap:22px;align-items:center}.shopcta small{display:block;font-size:.66rem;text-transform:uppercase;letter-spacing:.08em;color:var(--blue);font-weight:600}.shopcta h3{margin:2px 0 6px;font-size:1.1rem;font-weight:600}.shopcta p{margin:0;color:#5e7483;font-size:.9rem}.ctabtn{display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;text-decoration:none!important;background:var(--blue);color:#fff!important;border-radius:9px;padding:11px 15px;font-size:.84rem;font-weight:600}.ctabtn:hover{background:var(--blue2)}
.author{display:grid;grid-template-columns:56px 1fr;gap:15px;border-top:1px solid var(--line2);padding-top:19px;margin-top:10px}.avatar{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:#edf5f9;color:var(--blue);font-weight:600}.author small{display:block;font-size:.67rem;text-transform:uppercase;letter-spacing:.07em;color:var(--blue);font-weight:600}.author h3{margin:2px 0 4px}.author p{font-size:.87rem;margin:0;color:#617786}
.footer{background:#0d2536;color:#cfdee7}.footergrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px;padding:42px 0}.footer h2,.footer h3{color:#fff;margin:0 0 12px;font-size:.96rem;font-weight:600}.footer p{margin:.45em 0;font-size:.86rem}.footer a{color:#eef8fd}.footer .note{color:#9bb0be;font-size:.78rem}.bottom{border-top:1px solid rgba(255,255,255,.12);padding:14px 0 22px;color:#91a8b6;font-size:.76rem}
@media(max-width:980px){.mastgrid,.articlegrid{grid-template-columns:1fr}.herovisual{max-width:760px}.systemgrid{grid-template-columns:1fr 1fr}.system:first-child{padding-left:18px}.cards{grid-template-columns:1fr}.sidebox{position:static}.footergrid{grid-template-columns:1fr 1fr}.nav{display:none}}
@media(max-width:700px){.wrap{width:min(calc(100% - 24px),var(--wrap))}.top .wrap{display:block}.mastgrid{padding:26px 0 36px}h1{font-size:2.6rem}.systemgrid{grid-template-columns:1fr}.system{border-right:0;border-bottom:1px solid var(--line);padding-left:0!important}.matrix{display:block;overflow-x:auto}.matrix tbody,.matrix thead{min-width:760px}.crossgrid{grid-template-columns:1fr}.ctagrid{grid-template-columns:1fr}.ctabtn{width:100%}.footergrid{grid-template-columns:1fr}}