*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f7f9fc;color:#12243a;font-family:Inter,Arial,sans-serif;line-height:1.6}.shell{width:min(1160px,calc(100% - 40px));margin:auto}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:16px;z-index:99;background:#fff;padding:10px}.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid #dfe7f1}.header-row{min-height:72px;display:flex;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;gap:9px;color:#0e284e;text-decoration:none;font-weight:800;letter-spacing:.02em}.brand-mark{display:inline-grid;place-items:center;background:#0e5baa;color:#fff;border-radius:8px;padding:5px 7px;font-size:.78rem}.site-nav{margin-left:auto;display:flex;gap:24px;align-items:center}.site-nav a{color:#334963;text-decoration:none;font-size:.93rem}.site-nav a:hover,.site-nav a:focus{color:#0e5baa}.nav-toggle{display:none;margin-left:auto;border:1px solid #ccd8e6;background:#fff;border-radius:10px;padding:9px 12px}.hero{padding:78px 0 62px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.eyebrow{display:inline-block;color:#0e5baa;font-weight:800;font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;margin-bottom:12px}.eyebrow-light{color:#9ed0ff}h1,h2,h3{line-height:1.12;color:#0b2447;margin-top:0}h1{font-size:clamp(2.5rem,5vw,5rem);letter-spacing:-.055em;margin-bottom:24px}h2{font-size:clamp(2rem,3.5vw,3.2rem);letter-spacing:-.04em}h3{font-size:1.25rem}.lead{font-size:1.18rem;color:#526780;max-width:760px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;background:#0e5baa;color:#fff;text-decoration:none;border-radius:12px;padding:13px 18px;font-weight:750}.button-ghost{background:#fff;color:#0e3f78;border:1px solid #cbd9e8}.hero-panel{background:#0d2e55;border-radius:28px;padding:22px}.atlas-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.atlas-grid a{min-height:150px;background:#fff;border-radius:18px;padding:22px;color:#173552;text-decoration:none;display:flex;flex-direction:column;justify-content:flex-end}.atlas-grid b{font-size:1.15rem}.atlas-grid span{color:#62758a;font-size:.9rem;margin-top:3px}.section{padding:76px 0}.section-soft{background:#eef4fa}.section-head{max-width:760px;margin-bottom:28px}.section-head-spaced{margin-top:52px}.hub-grid,.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.hub-card,.article-card{background:#fff;border:1px solid #dce5ef;border-radius:18px;overflow:hidden}.hub-card{padding:24px;text-decoration:none;color:inherit;min-height:220px}.hub-card:hover{border-color:#9dbbd8}.hub-index,.kicker{color:#0e5baa;font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.09em}.hub-card p,.article-card p{color:#61758c}.card-body{padding:23px}.article-card h2,.article-card h3{font-size:1.18rem}.article-card a{color:#112f51;text-decoration:none}.card-link{color:#0e5baa;font-weight:750}.page-hero,.article-head{padding:64px 0 32px}.page-hero h1,.article-head h1{max-width:980px;font-size:clamp(2.25rem,4.5vw,4.5rem)}.breadcrumbs{display:flex;gap:8px;flex-wrap:wrap;color:#77899b;font-size:.85rem;margin-bottom:26px}.breadcrumbs a{color:#60758b;text-decoration:none}.article-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.article-meta span{background:#e9f1f9;color:#38536f;border-radius:999px;padding:7px 10px;font-size:.78rem}.article-layout{display:grid;grid-template-columns:260px minmax(0,760px);gap:48px;align-items:start;padding-bottom:78px}.article-aside{position:sticky;top:100px}.aside-box,.toc{background:#eef4fa;border-radius:16px;padding:18px;margin-bottom:16px;font-size:.88rem}.toc a{display:block;color:#526b84;text-decoration:none;padding:5px 0}.prose{font-size:1.03rem;color:#263d55}.prose h2,.prose h3{scroll-margin-top:100px;margin-top:2em}.prose h2{font-size:1.8rem}.prose h3{font-size:1.3rem}.prose p,.prose ul,.prose ol,.prose table{margin:1em 0}.prose a{color:#075ca8}.prose table{width:100%;border-collapse:collapse;font-size:.92rem}.prose th,.prose td{padding:12px;border:1px solid #d9e3ed;text-align:left;vertical-align:top}.prose th{background:#eef4fa}.prose blockquote{margin:1.4em 0;padding:14px 18px;border-left:4px solid #0e5baa;background:#eef4fa}.trust-band{background:#0b2c50;color:#d7e8f8;padding:58px 0}.trust-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.trust-band h2{color:#fff}.site-footer{background:#081d34;color:#aabed1;padding:52px 0 20px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:44px}.brand-footer{color:#fff}.footer-grid a{display:block;color:#c5d5e4;text-decoration:none;margin-top:8px}.footer-grid strong{color:#fff}.footer-bottom{border-top:1px solid #203950;margin-top:36px;padding-top:20px;font-size:.83rem}.intro-prose{padding-bottom:20px}@media(max-width:900px){.site-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;padding:18px 20px;border-bottom:1px solid #dfe7f1;flex-direction:column;align-items:flex-start}.site-nav.is-open{display:flex}.nav-toggle{display:block}.hero{grid-template-columns:1fr;padding-top:48px}.hub-grid,.article-grid{grid-template-columns:1fr 1fr}.article-layout{grid-template-columns:1fr}.article-aside{position:static}.toc{display:none}.trust-grid,.footer-grid{grid-template-columns:1fr}}@media(max-width:620px){.shell{width:min(100% - 28px,1160px)}h1{font-size:2.55rem}.atlas-grid,.hub-grid,.article-grid{grid-template-columns:1fr}.hero-panel{padding:14px;border-radius:20px}.atlas-grid a{min-height:115px}.section{padding:54px 0}.footer-grid{gap:26px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.hero-media{grid-column:2;grid-row:1;border-radius:26px;overflow:hidden;border:1px solid #dce5ef;background:#fff}
.hero-media img,.page-visual img,.article-hero-media img,.inline-diagram img,.focus-tourniquet img{display:block;width:100%;height:auto}
.hero-panel-over{grid-column:2;grid-row:1;align-self:end;margin:0 22px 22px;background:rgba(11,45,82,.96);position:relative}
.category-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}
.page-visual{margin:0;border-radius:22px;overflow:hidden;border:1px solid #dce5ef;background:#fff}
.article-hero-media{margin-top:18px;margin-bottom:42px;border-radius:24px;overflow:hidden;border:1px solid #dce5ef;background:#fff}
.inline-diagram{margin:42px 0 10px;padding:0;background:#fff;border-radius:22px;overflow:hidden;border:1px solid #dce5ef}
.inline-diagram figcaption{padding:12px 18px;color:#6b7f92;font-size:.82rem}
.focus-tourniquet{padding-top:28px}
.focus-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:center;background:#edf4fb;border:1px solid #d5e3ef;border-radius:24px;padding:26px}
.focus-grid img{border-radius:18px;background:#fff}
@media(max-width:900px){.hero-media,.hero-panel-over{grid-column:1;grid-row:auto}.hero-panel-over{margin:-110px 14px 14px}.category-hero-grid,.focus-grid{grid-template-columns:1fr}}

/* RC3 photographic visual system */
.hero-photo{grid-template-columns:.95fr 1.05fr;gap:48px;padding-top:64px}.hero-photo-frame{margin:0;border-radius:28px;overflow:hidden;background:#fff;border:1px solid #d9e4ee;aspect-ratio:4/3}.hero-photo-frame img{display:block;width:100%;height:100%;object-fit:cover}.quick-links{padding:0 0 18px}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.quick-grid a{display:flex;flex-direction:column;gap:3px;padding:18px;border-radius:15px;background:#0b2d52;color:#fff;text-decoration:none}.quick-grid span{font-size:.82rem;color:#c5d7e8}.visual-cards .hub-card,.visual-cards .article-card{padding:0}.card-media{display:block;aspect-ratio:4/3;background:#fff;border-bottom:1px solid #dce5ef;overflow:hidden}.card-media img{width:100%;height:100%;object-fit:contain;display:block;padding:8px}.hub-card>.hub-index,.hub-card>h3,.hub-card>p,.hub-card>.card-link{margin-left:22px;margin-right:22px}.hub-card>.hub-index{margin-top:20px}.hub-card>.card-link{display:block;margin-bottom:22px}.page-photo{margin:0;border-radius:22px;overflow:hidden;background:#fff;border:1px solid #dce5ef;max-height:410px}.page-photo img{display:block;width:100%;height:100%;max-height:410px;object-fit:cover}.article-title-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:42px;align-items:center}.article-cover{margin:0;border-radius:22px;overflow:hidden;border:1px solid #dce5ef;background:#fff;aspect-ratio:4/3}.article-cover img{display:block;width:100%;height:100%;object-fit:contain;padding:10px}.tourniquet-feature{display:grid;grid-template-columns:.7fr 1.3fr;gap:36px;align-items:center;background:#edf4fb;border:1px solid #d7e4ef;border-radius:24px;padding:28px}.tourniquet-gallery{display:grid;grid-template-columns:1fr 1fr;gap:12px}.tourniquet-gallery img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#fff;border-radius:16px;border:1px solid #d7e4ef;padding:8px}.intro-prose{max-width:800px}.article-card .card-body{padding:20px}.article-card h2,.article-card h3{margin-bottom:10px}
@media(max-width:900px){.hero-photo,.category-hero-grid,.article-title-grid,.tourniquet-feature{grid-template-columns:1fr}.quick-grid{grid-template-columns:1fr 1fr}.article-cover{max-width:520px}.page-photo{max-height:none}.page-photo img{max-height:none;object-fit:contain}.tourniquet-gallery{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.quick-grid,.tourniquet-gallery{grid-template-columns:1fr}.hero-photo-frame{aspect-ratio:16/10}.article-cover{max-width:none}.card-media{aspect-ratio:16/10}}

.page-photo-small{max-width:330px;justify-self:end;max-height:280px}.page-photo-small img{object-fit:contain;padding:10px}.article-cover{max-width:320px;justify-self:end}
@media(max-width:900px){.page-photo-small,.article-cover{justify-self:start}}


/* RC4 — staging visual polish */
:root{--shell:1280px;--reading:780px;--navy:#0b2d52;--blue:#0e67bd;--line:#d8e4ef;--soft:#edf4fa}
.shell{width:min(var(--shell),calc(100% - 56px))}
.site-header .shell{width:min(1320px,calc(100% - 40px))}
.hero.hero-photo{grid-template-columns:minmax(0,1.02fr) minmax(420px,.88fr);gap:56px;padding:66px 0 42px;align-items:center}
.hero-copy{max-width:660px}.hero-copy h1{font-size:clamp(3rem,4.8vw,5.45rem);max-width:650px}.hero-photo-frame{aspect-ratio:16/11;max-height:520px;border-radius:24px}.hero-photo-frame img{object-position:center center}
.quick-links{padding:0 0 28px}.quick-grid{gap:14px}.quick-grid a{min-height:104px;justify-content:center;padding:18px 20px;transition:transform .18s ease,border-color .18s ease}.quick-grid a:hover{transform:translateY(-2px)}
.section{padding:68px 0}.section-head{margin-bottom:30px}.home-hub-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.home-article-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.section-card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.blog-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.related-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.hub-card,.article-card{border-radius:17px;box-shadow:0 8px 24px rgba(20,55,88,.035)}.visual-cards .hub-card,.visual-cards .article-card{height:100%}.card-media{aspect-ratio:16/10;background:#fff}.card-media img{object-fit:contain;padding:12px;image-rendering:auto}.hub-card h3,.article-card h3,.article-card h2{line-height:1.22}.hub-card p,.article-card p{font-size:.93rem;line-height:1.52}
.category-page-hero{padding-bottom:40px}.category-hero-grid{grid-template-columns:minmax(0,1fr) minmax(340px,520px);gap:54px}.category-hero-copy{max-width:700px}.category-hero-copy h1{font-size:clamp(2.8rem,4.3vw,4.75rem)}.page-photo{width:100%;max-height:none;border-radius:22px}.page-photo-hero{aspect-ratio:16/10}.page-photo-hero img{width:100%;height:100%;object-fit:cover}.page-photo-object{justify-self:end;width:min(100%,360px);aspect-ratio:5/4}.page-photo-object img{width:100%;height:100%;object-fit:contain;padding:12px}.prose-lead{max-width:900px;padding:4px 0 16px}.prose-lead>p:first-child{font-size:1.08rem;color:#405a72}
.tourniquet-feature{grid-template-columns:minmax(280px,.8fr) minmax(0,1.2fr);gap:42px;padding:34px;margin-top:18px}.tourniquet-copy h2{font-size:clamp(2rem,3vw,3.15rem)}.tourniquet-gallery{grid-template-columns:repeat(2,minmax(0,300px));justify-content:end;gap:18px}.tourniquet-gallery figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px}.tourniquet-gallery img{width:100%;height:auto;aspect-ratio:5/4;object-fit:contain;padding:0;border:0}.tourniquet-gallery figcaption{font-size:.78rem;color:#657b91;padding:8px 4px 2px}
.article-head{padding:56px 0 30px}.article-title-grid{grid-template-columns:minmax(0,1fr) 300px;gap:52px;align-items:center}.article-title-grid>div:first-child{max-width:820px}.article-head h1{font-size:clamp(2.75rem,4.2vw,4.7rem)}.article-cover{width:300px;max-width:100%;aspect-ratio:5/4;border-radius:20px}.article-cover img{padding:12px;object-fit:contain}.article-layout{grid-template-columns:220px minmax(0,var(--reading));gap:48px;justify-content:center;padding-top:18px}.article-main{min-width:0}.article-aside{top:92px}.prose{font-size:1.055rem;line-height:1.72}.prose h2{font-size:1.85rem;margin-top:2.1em}.prose h3{font-size:1.35rem}.prose table{display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.contextual-media{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:32px 0 42px}.contextual-media figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px}.contextual-media img{display:block;width:100%;height:auto;aspect-ratio:5/4;object-fit:contain}.inline-diagram{margin-top:44px}.trust-band{padding:54px 0}.footer-grid{gap:56px}
@media(max-width:1100px){.shell{width:min(100% - 42px,1120px)}.home-hub-grid,.home-article-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.category-hero-grid{grid-template-columns:minmax(0,1fr) 390px}.article-layout{grid-template-columns:200px minmax(0,720px);gap:36px}}
@media(max-width:900px){.shell{width:min(100% - 32px,860px)}.hero.hero-photo{grid-template-columns:1fr;gap:30px;padding-top:46px}.hero-copy{max-width:760px}.hero-copy h1{max-width:760px;font-size:clamp(2.65rem,8vw,4.5rem)}.hero-photo-frame{max-width:760px;width:100%;aspect-ratio:16/9}.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.home-hub-grid,.home-article-grid,.section-card-grid,.blog-grid,.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.category-hero-grid{grid-template-columns:1fr;gap:28px}.page-photo-hero{max-width:760px}.page-photo-object{justify-self:start;width:min(100%,420px)}.tourniquet-feature{grid-template-columns:1fr}.tourniquet-gallery{justify-content:start}.article-title-grid{grid-template-columns:1fr;gap:24px}.article-cover{width:min(100%,480px);justify-self:start;aspect-ratio:16/10}.article-layout{grid-template-columns:1fr;max-width:800px}.article-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:14px}.aside-box,.toc{margin:0}.toc{display:block}.contextual-media{max-width:620px}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}}
@media(max-width:700px){.shell{width:min(100% - 28px,680px)}.site-header .shell{width:calc(100% - 24px)}.header-row{min-height:58px}.site-nav{top:58px}.hero.hero-photo{padding-top:34px}.hero-copy h1{font-size:clamp(2.25rem,10vw,3.35rem);letter-spacing:-.045em}.lead{font-size:1.02rem}.hero-photo-frame{border-radius:18px;aspect-ratio:4/3}.quick-grid,.home-hub-grid,.home-article-grid,.section-card-grid,.blog-grid,.related-grid{grid-template-columns:1fr}.quick-grid a{min-height:88px}.section{padding:50px 0}.card-media{aspect-ratio:16/9}.card-media img{padding:9px}.category-page-hero,.article-head{padding-top:38px}.category-hero-copy h1,.article-head h1{font-size:clamp(2.05rem,9vw,3.15rem)}.page-photo-hero{aspect-ratio:4/3}.page-photo-object{width:min(100%,360px)}.tourniquet-feature{padding:22px}.tourniquet-gallery{grid-template-columns:1fr 1fr;gap:10px}.tourniquet-gallery figure{padding:7px}.article-meta{gap:6px}.article-meta span{font-size:.72rem}.article-cover{width:100%;max-width:420px;aspect-ratio:16/10}.article-cover img{padding:8px}.article-aside{grid-template-columns:1fr}.toc{display:none}.prose{font-size:1rem;line-height:1.68}.prose h2{font-size:1.55rem}.prose h3{font-size:1.2rem}.contextual-media{grid-template-columns:1fr 1fr;gap:10px;margin:26px 0 34px}.contextual-media figure{padding:7px}.footer-grid{grid-template-columns:1fr}.trust-grid{grid-template-columns:1fr;gap:20px}}
@media(max-width:430px){.shell{width:calc(100% - 22px)}.brand{font-size:.86rem}.brand-mark{font-size:.66rem}.nav-toggle{padding:7px 10px}.hero-copy h1{font-size:2.35rem}.actions{gap:8px}.button{padding:11px 13px;font-size:.9rem}.hero-photo-frame{aspect-ratio:5/4}.tourniquet-gallery,.contextual-media{grid-template-columns:1fr}.article-cover{max-width:none}.article-layout{padding-bottom:52px}.prose table{font-size:.84rem}.site-footer{padding-top:40px}}


/* RC5 — visual QA corrections from staging screenshots */
.category-page-hero{padding-top:52px}
.category-hero-grid{align-items:start}
.category-hero-copy{padding-top:18px}
.category-hero-copy .lead{max-width:720px}
.page-photo-hero{
  justify-self:end;
  width:min(100%,480px);
  aspect-ratio:4/3;
  max-height:390px;
  background:#fff;
}
.page-photo-hero img{
  width:100%;
  height:100%;
  object-fit:contain;
  object-position:center;
  padding:16px;
}
.home-hub-grid .card-media,.home-article-grid .card-media{background:#fff}
.home-hub-grid .card-media img,.home-article-grid .card-media img{padding:14px}
.article-title-grid{align-items:start}
.article-cover{margin-top:4px}
.contextual-media figure{min-width:0}
.contextual-media img{background:#fff}
@media(max-width:900px){
  .category-page-hero{padding-top:34px}
  .category-hero-grid{gap:20px}
  .category-hero-copy{padding-top:0}
  .page-photo-hero{
    justify-self:start;
    width:min(100%,460px);
    max-height:340px;
    aspect-ratio:4/3;
  }
  .page-photo-hero img{padding:12px}
  .article-cover{width:min(100%,360px)}
}
@media(max-width:700px){
  .category-page-hero{padding-bottom:24px}
  .page-photo-hero{width:min(100%,390px);max-height:300px}
  .page-photo-hero img{padding:10px}
  .article-head{padding-bottom:20px}
  .article-title-grid{gap:18px}
  .contextual-media{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:480px){
  .page-photo-hero{width:100%;max-height:270px}
  .contextual-media{grid-template-columns:1fr}
}