/* Security Briefing homepage. Mobile first; desktop sizes scale from the 668-unit reference design via --u. */
@font-face { font-family: "Source Serif 4"; src: url("/assets/fonts/source-serif.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }
@font-face { font-family: "DM Sans"; src: url("/assets/fonts/dm-sans.woff2") format("woff2"); font-weight: 300 700; font-display: swap; }

:root {
  --navy: #0a1a5c;
  --navy-deep: #071a5e;
  --teal: #16c79a;
  --teal-text: #0a8064;
  --ink: #1b2340;
  --muted: #566080;
  --line: #d9dde9;
  --tint: #f4f6fa;
  --on-navy-muted: #d5dbf0;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "DM Sans", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-optical-sizing: none; background: #fff; color: var(--ink); font: 400 1rem/1.55 var(--sans); }
img { display: block; max-width: 100%; height: auto; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { color: var(--navy); font-family: var(--serif); font-weight: 700; line-height: 1.2; }
a:focus-visible, summary:focus-visible, input:focus-visible, button:focus-visible { outline: 3px solid var(--teal-text); outline-offset: 2px; border-radius: 2px; }
.topbar a:focus-visible, .site-footer a:focus-visible, .site-footer summary:focus-visible, .tools a:focus-visible { outline-color: #fff; }

.wrap { width: min(100% - 2.5rem, 1200px); margin-inline: auto; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: 1rem; top: -4rem; z-index: 20; padding: .75rem 1rem; background: var(--navy); color: #fff; }
.skip:focus { top: .5rem; }

/* Header */
.topbar, .primary { display: none; }
.site-header { position: relative; z-index: 5; border-bottom: 2px solid var(--navy); background: #fff; }
.bar { display: flex; align-items: center; justify-content: space-between; gap: .75rem; padding-block: .25rem; }
.logo { display: inline-flex; align-items: center; gap: .375rem; min-height: 44px; color: var(--navy); font: 700 1.25rem/1 var(--serif); letter-spacing: -.01em; white-space: nowrap; }
.logo picture, .foot-logo picture { display: block; }
.logo .site-logo { display: block; width: auto; max-width: 100%; height: 34px; }
.menu summary { position: relative; display: block; width: 44px; height: 44px; color: var(--navy); cursor: pointer; list-style: none; }
.menu summary::before { content: ""; position: absolute; inset: 11px 7px; background: linear-gradient(var(--navy) 0 0) 0 0 / 100% 2.5px no-repeat, linear-gradient(var(--navy) 0 0) 0 50% / 100% 2.5px no-repeat, linear-gradient(var(--navy) 0 0) 0 100% / 100% 2.5px no-repeat; }
.menu summary::-webkit-details-marker { display: none; }
.menu nav { position: absolute; top: 100%; left: 0; right: 0; max-height: calc(100vh - 56px); overflow-y: auto; padding: .25rem 1.25rem .5rem; border-bottom: 2px solid var(--navy); background: #fff; box-shadow: 0 8px 16px rgb(10 26 92 / .12); }
.menu li + li { border-top: 1px solid var(--line); }
.menu a { display: flex; align-items: center; min-height: 44px; color: var(--navy); font-weight: 500; }
.menu:not([open]) nav, .langs:not([open]) ul { display: none; }
.search { display: flex; width: 100%; min-width: 0; margin-block: .5rem .25rem; }
.search input { flex: 1 1 0; width: 100%; min-width: 0; min-height: 44px; padding: 0 .75rem; border: 1px solid #7d86a3; border-right: 0; border-radius: 4px 0 0 4px; background: #fff; color: var(--ink); font: inherit; }
.search button { min-height: 44px; padding: 0 1rem; border: 1px solid var(--navy); border-radius: 0 4px 4px 0; background: var(--navy); color: #fff; font: 600 .9375rem var(--sans); cursor: pointer; }

/* Intro */
.intro { padding-block: .375rem .75rem; border-bottom: 2px solid var(--navy); text-align: center; }
.intro h1 { font-size: 1.875rem; line-height: 1.15; }
.intro p { max-width: 27rem; margin: .25rem auto 0; font-size: 1rem; line-height: 1.35; }
.latest-h { margin-top: .625rem; font-size: 1.5rem; }

/* Stories: on phones the first is full width, the rest are compact rows */
.grid { display: block; margin-top: .75rem; }
.card { display: grid; grid-template-columns: 31% minmax(0, 1fr); column-gap: 1rem; align-items: center; padding-block: .3125rem; border-bottom: 1px solid var(--line); }
.thumb { width: 100%; aspect-ratio: 141 / 52; object-fit: cover; background: var(--tint); }
.kicker { display: inline-flex; align-items: center; color: var(--teal-text); font-size: .75rem; font-weight: 700; line-height: 1.2; }
.kicker:hover { color: var(--navy); }
.card h3 { font-size: 1.0625rem; line-height: 1.08; letter-spacing: -.01em; }
.card h3 a:hover, .cat li a:hover, .most a:hover, .auth h3 a:hover { color: var(--teal-text); }
.dek { display: none; }
.dbr { display: none; }
.card:first-child { display: block; padding-block: 0 .75rem; }
.card:first-child .thumb { aspect-ratio: 459 / 138; }
.card:first-child .kicker { margin-top: .75rem; font-size: .8125rem; }
.card:first-child h3 { font-size: 1.625rem; line-height: 1.04; }
.card:first-child .dek { display: block; margin-top: .375rem; font-size: 1rem; line-height: 1.3; }

/* Category columns */
.cats { margin-top: .625rem; }
.cat { display: flex; flex-direction: column; padding-block: .375rem .5rem; border-top: 1px solid var(--line); }
.cat:first-child { border-top: 1px solid var(--navy); }
.cat-rule { display: none; }
.cat h2 { font-size: 1.25rem; }
.cat ul { margin-top: .125rem; }
.cat li { padding-block: .1875rem; color: var(--navy); font: 700 .875rem/1.25 var(--sans); }
.view-more { display: inline-flex; align-items: center; align-self: flex-start; min-height: 30px; margin-top: .25rem; padding: 0 .875rem; border-radius: 4px; background: var(--navy); color: #fff; font-size: .8125rem; font-weight: 700; transition: background-color .2s; }
.view-more:hover { background: #162c86; }

/* Most Read */
.most { padding-top: .625rem; border-top: 1px solid var(--navy); }
.most h2 { font-size: 1.375rem; }
.most ol { margin-top: .125rem; counter-reset: read; }
.most li { display: grid; grid-template-columns: 2.25rem 1fr; padding-block: .25rem; border-bottom: 1px solid var(--line); counter-increment: read; color: var(--navy); font-size: .875rem; font-weight: 700; line-height: 1.3; }
.most li::before { content: counter(read) "."; color: var(--teal-text); font-weight: 700; }

/* Login and Contact */
.auth { margin-top: 1.25rem; padding: .375rem .5rem; background: var(--tint); }
.auth-inner { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; max-width: 60rem; margin-inline: auto; }
.auth-card { padding: .375rem .625rem .75rem; border: 1px solid var(--line); border-radius: 4px; background: #fff; text-align: center; }
.auth-card h3 { font-size: 1.125rem; }
.auth-card p { margin-top: .25rem; font-size: .8125rem; line-height: 1.35; }

/* Closed sign-in page */
.closed { max-width: 40rem; padding-block: 3rem 3rem; }
.closed h1 { font-size: clamp(2rem, 1.6rem + 2vw, 2.75rem); }
.closed p { margin-top: 1rem; font-size: 1.0625rem; }
.closed p a:not(.btn-outline) { color: var(--teal-text); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.btn-outline { display: inline-flex; align-items: center; min-height: 44px; margin-top: .5rem; padding: 0 1rem; border: 1px solid var(--navy); border-radius: 4px; color: var(--navy); font-weight: 600; }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* Footer */
.site-footer { margin-top: .75rem; padding-block: 1rem .75rem; background: var(--navy-deep); color: #fff; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.15fr) minmax(0, 1fr); gap: 0 .75rem; }
.foot-grid nav, .foot-grid li, .foot-grid a { min-width: 0; overflow-wrap: anywhere; }
.foot-grid a:not(.btn-teal) { display: inline-flex; align-items: center; min-height: 24px; font-size: .8125rem; }
.foot-grid a:not(.btn-teal):hover, .foot-end a:hover { color: var(--teal); }
.stay { grid-column: 1 / -1; margin-top: .875rem; text-align: center; }
.stay h2 { color: #fff; font: 700 1.0625rem/1.3 var(--sans); }
.stay p { max-width: 24rem; margin: .375rem auto 0; color: #fff; font-size: .875rem; line-height: 1.35; }
.btn-teal { display: flex; align-items: center; justify-content: center; width: min(13.5rem, 100%); min-height: 32px; margin: .625rem auto 0; border-radius: 3px; background: var(--teal); color: var(--navy-deep); font-size: .875rem; font-weight: 700; text-transform: uppercase; transition: background-color .2s; }
.btn-teal:hover { background: #3bdcb3; }
.foot-end { margin-top: .875rem; padding-top: .875rem; border-top: 1px solid rgb(255 255 255 / .35); text-align: center; }
.foot-logo { display: inline-flex; align-items: center; gap: .5rem; color: #fff; font: 700 1.5rem/1 var(--serif); }
.foot-logo .site-logo { display: block; width: auto; max-width: 100%; height: 36px; }
.foot-end p { margin-top: .25rem; color: #fff; font-size: .8125rem; }
.foot-row { display: flex; align-items: center; justify-content: center; gap: .625rem; margin-top: .25rem; }
.pin { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; }
.pin svg { width: 22px; height: 22px; fill: #fff; }
.foot-sep { width: 1px; height: 20px; background: #fff; }
.langs { position: relative; }
.langs summary { display: inline-flex; align-items: center; gap: .375rem; min-height: 32px; padding: 0 .75rem; font-size: .875rem; font-weight: 600; border: 1px solid var(--teal); border-radius: 6px; cursor: pointer; list-style: none; }
.langs summary::-webkit-details-marker { display: none; }
.langs summary svg { width: 18px; height: 18px; fill: none; stroke: #fff; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.langs ul { position: absolute; bottom: calc(100% + .25rem); left: 50%; z-index: 6; display: grid; grid-template-columns: repeat(2, 1fr); width: min(19rem, calc(100vw - 2.5rem)); padding: .5rem; border: 1px solid var(--teal); border-radius: 6px; background: var(--navy-deep); text-align: left; transform: translateX(-50%); }
.langs a { display: flex; align-items: center; min-height: 36px; padding-inline: .5rem; }
.langs a:hover { color: var(--teal); }

/* Desktop: every size below is measured from the reference design at 668 units wide */
@media (min-width: 1024px) {
  :root { --u: calc(min(100vw, 1336px) / 668); }
  .wrap { width: calc(var(--u) * 610); }

  .menu { display: none; }

  .topbar { display: block; background: var(--navy-deep); color: #fff; }
  .topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: calc(var(--u) * 29); }
  .topbar ul { display: flex; gap: calc(var(--u) * 14); }
  .topbar li a { font-size: calc(var(--u) * 10); font-weight: 600; }
  .topbar li a:hover { color: var(--teal); }
  .top-actions { display: flex; gap: calc(var(--u) * 9); }
  .top-btn { display: inline-flex; align-items: center; justify-content: center; height: calc(var(--u) * 22); border-radius: calc(var(--u) * 3); font-size: calc(var(--u) * 10); font-weight: 600; transition: background-color .2s, color .2s; }
  .top-login { min-width: calc(var(--u) * 51); padding-inline: calc(var(--u) * 8); white-space: nowrap; border: 1px solid #fff; color: #fff; }
  .top-login:hover { background: #fff; color: var(--navy-deep); }
  .top-contact { min-width: calc(var(--u) * 59); padding-inline: calc(var(--u) * 8); white-space: nowrap; background: var(--teal); color: var(--navy-deep); }
  .top-contact:hover { background: #3bdcb3; }

  .site-header { border-bottom: 1px solid var(--navy); }
  .intro p { max-width: none; }
  .bar { flex-wrap: nowrap; justify-content: space-between; gap: 0; height: calc(var(--u) * 43); padding: 0; }
  .logo { flex: none; gap: calc(var(--u) * 3); min-height: 0; font-size: calc(var(--u) * 14); letter-spacing: -.01em; }
  .logo .site-logo { width: auto; height: calc(var(--u) * 25); }
  .primary { display: block; }
  .primary > ul { display: flex; gap: calc(var(--u) * 5.75); }
  .primary li { position: relative; }
  .primary > ul > li > a, .nav-label { display: flex; align-items: center; height: calc(var(--u) * 43); color: var(--navy); font: 700 calc(var(--u) * 7.4)/1 var(--serif); letter-spacing: -.012em; white-space: nowrap; }
  .primary > ul > li:first-child > a { box-shadow: inset 0 calc(var(--u) * -8) 0 0 #fff, inset 0 calc(var(--u) * -9.5) 0 0 var(--navy); }
  .primary > ul > li > a:hover, .nav-label:hover { color: var(--teal-text); }
  .nav-label { cursor: default; }
  .nav-label:focus-visible { outline: 3px solid var(--teal-text); outline-offset: 2px; }
  .primary ul ul { position: absolute; top: 100%; left: 0; z-index: 8; display: none; min-width: 13rem; padding: .25rem 0; border: 1px solid var(--line); border-top: 2px solid var(--navy); background: #fff; box-shadow: 0 8px 16px rgb(10 26 92 / .14); }
  .primary li:hover > ul, .primary li:focus-within > ul { display: block; }
  .primary li:nth-last-child(-n+3) > ul { left: auto; right: 0; }
  .primary ul ul a { display: flex; align-items: center; min-height: 40px; padding-inline: .875rem; color: var(--navy); font-size: .9375rem; font-weight: 500; }
  .primary ul ul a:hover { background: var(--tint); color: var(--teal-text); }

  .intro { padding-block: calc(var(--u) * 16) calc(var(--u) * 14); border-bottom-width: calc(var(--u) * 1.5); text-align: center; }
  .intro h1 { font-size: calc(var(--u) * 27.5); letter-spacing: -.005em; line-height: 1.15; }
  .intro p { margin-top: calc(var(--u) * 12); font-size: calc(var(--u) * 9.5); line-height: 1.4; white-space: nowrap; }
  .latest-h { margin-top: calc(var(--u) * 14); font-size: calc(var(--u) * 21); letter-spacing: -.01em; }

  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: calc(var(--u) * 26) calc(var(--u) * 16.5); margin-top: calc(var(--u) * 21); }
  .dbr { display: inline; }
  .grid { display: grid; }
  .card, .card:first-child { padding-block: 0; border-bottom: 0; }
  .card h3 { line-height: 1.13; }
  .card, .card:first-child { display: block; }
  .card .thumb, .card:first-child .thumb { aspect-ratio: 195 / 126; }
  .kicker, .card:first-child .kicker { min-height: 0; margin-top: calc(var(--u) * 8); font-size: calc(var(--u) * 10); font-weight: 700; }
  .card h3, .card:first-child h3 { margin-top: calc(var(--u) * 2); font-size: calc(var(--u) * 16.3); line-height: 1.13; letter-spacing: -.014em; white-space: nowrap; }
  .card:first-child .dek { margin-top: calc(var(--u) * 6); font-size: calc(var(--u) * 9.2); line-height: 1.62; }

  .cats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: calc(var(--u) * 16.5); margin-top: calc(var(--u) * 22); }
  .cat, .cat:first-child { padding-block: 0; border-top: 0; }
  .cat-rule { display: block; }
  .cat-rule::before { width: calc(var(--u) * 48); height: calc(var(--u) * 4); transform: translateY(calc(var(--u) * -1.5)); }
  .cat h2 { margin-top: calc(var(--u) * 14); font-size: calc(var(--u) * 14.5); }
  .cat ul { margin-top: calc(var(--u) * 7); flex: 1; }
  .cat li { padding-block: calc(var(--u) * 5); border-bottom: 1px solid var(--line); font: 700 calc(var(--u) * 11.1)/1.3 var(--serif); }
  .cat li:last-child { margin-bottom: calc(var(--u) * 12); }
  .view-more { min-height: 0; height: calc(var(--u) * 21); margin-top: calc(var(--u) * 4); padding: 0 calc(var(--u) * 11); border-radius: calc(var(--u) * 3); font-size: calc(var(--u) * 9.5); font-weight: 700; }

  .most { margin-top: calc(var(--u) * 30); padding-top: calc(var(--u) * 5); border-top-width: 1px; }
  .most h2 { font-size: calc(var(--u) * 19); letter-spacing: -.01em; }
  .most ol { margin-top: calc(var(--u) * 5); }
  .most li { grid-template-columns: calc(var(--u) * 29) 1fr; padding-block: calc(var(--u) * 4.6); font-size: calc(var(--u) * 11.4); font-weight: 700; line-height: 1.25; }

  .auth { width: calc(var(--u) * 622); margin: calc(var(--u) * 19) auto 0; padding: calc(var(--u) * 6) calc(var(--u) * 14); }
  .auth-inner { gap: calc(var(--u) * 15); max-width: none; }
  .auth-card { padding: calc(var(--u) * 7) calc(var(--u) * 36) calc(var(--u) * 8); }
  .auth-card h3 { font-size: calc(var(--u) * 16.5); }
  .auth-card p { margin-top: calc(var(--u) * 4); font-size: calc(var(--u) * 10); line-height: 1.45; }

  .site-footer { margin-top: calc(var(--u) * 10); padding-block: calc(var(--u) * 20) calc(var(--u) * 4); }
  .site-footer .wrap { width: calc(var(--u) * 582); }
  .foot-grid { grid-template-columns: calc(var(--u) * 154) calc(var(--u) * 142) calc(var(--u) * 132) 1fr; gap: 0; padding-bottom: calc(var(--u) * 9); }
  .foot-grid { grid-template-columns: calc(var(--u) * 154) calc(var(--u) * 142) calc(var(--u) * 132) 1fr; }
  .foot-grid a:not(.btn-teal) { min-height: 0; height: calc(var(--u) * 18); font-size: calc(var(--u) * 10); }
  .stay { grid-column: auto; margin-top: 0; text-align: left; }
  .stay h2 { font-size: calc(var(--u) * 11); }
  .stay p { max-width: none; margin: calc(var(--u) * 3) 0 0; color: #fff; font-size: calc(var(--u) * 9.6); line-height: 1.32; }
  .btn-teal { width: calc(var(--u) * 135); min-height: 0; height: calc(var(--u) * 20); margin: calc(var(--u) * 6) 0 0; font-size: calc(var(--u) * 9.4); }
  .foot-end { margin-top: 0; padding-top: calc(var(--u) * 14); }
  .foot-logo { gap: calc(var(--u) * 4); font-size: calc(var(--u) * 19); }
  .foot-logo .site-logo { width: auto; height: calc(var(--u) * 27); }
  .foot-end p { margin-top: calc(var(--u) * 4); font-size: calc(var(--u) * 10); }
  .foot-row { gap: calc(var(--u) * 7); margin-top: calc(var(--u) * 4); }
  .pin { width: calc(var(--u) * 22); height: calc(var(--u) * 22); }
  .pin svg { width: calc(var(--u) * 13); height: calc(var(--u) * 13); }
  .foot-sep { height: calc(var(--u) * 11); }
  .langs summary { gap: calc(var(--u) * 4); min-height: 0; height: calc(var(--u) * 22); padding: 0 calc(var(--u) * 9); border-radius: calc(var(--u) * 3); font-size: calc(var(--u) * 10); font-weight: 600; }
  .langs summary svg { width: calc(var(--u) * 11); height: calc(var(--u) * 11); }
}

@media (max-width: 359px) {
  .logo { font-size: 1.0625rem; }
  .logo .site-logo { width: auto; height: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* Keep the longest fixed headline line inside its column on small desktops */
@media (min-width: 1024px) and (max-width: 1199.98px) {
  .card h3, .card:first-child h3 { letter-spacing: -.024em; }
}

[data-focus="card-pentest"] { object-position: 50% 12%; }
[data-focus="card-games"] { object-position: 50% 62%; }
[data-focus="card-banking"] { object-position: 50% 30%; }
[data-focus="card-cisa"] { object-position: 50% 8%; }
@media (min-width: 1024px) { [data-focus^="card-"] { object-position: 50% 50%; } }

[data-focus="50-30"] { object-position: 50% 30%; }
[data-focus="60-50"] { object-position: 60% 50%; }
[data-focus="100-50"] { object-position: 100% 50%; }

/* Back to top */
#back-to-top { position: fixed; right: 1rem; bottom: 1rem; z-index: 50; display: none; place-items: center; width: 44px; height: 44px; padding: 0; border: 0; border-radius: 50%; background: #071a5e; color: #fff; box-shadow: 0 4px 14px rgba(7, 26, 94, .3); cursor: pointer; }
#back-to-top.btt-visible { display: grid; }
#back-to-top:hover { background: #162c86; }
#back-to-top:focus-visible { outline: 3px solid #3bdcb3; outline-offset: 2px; }