/* Design tokens: the visual system lives here. Main content starts at 16px.
 * Fluid sizing, square geometry and a red route accent recall the reference's
 * atmosphere; artwork and branding are original. No fonts fetched from a CDN.
 */
:root {
  --red:#dc242b;
  --red-bright:#ee2b32;
  --ink:#191c20;
  --muted:#636970;
  --line:#dce0e3;
  --paper:#fff;
  --soft:#f3f5f6;
  --gutter:clamp(22px,5.2vw,88px);
  --max:1500px;
  font-family:'Arial','Helvetica Neue',sans-serif;
  color:var(--ink);
  background:var(--paper);
  font-synthesis:none
}

* {
  box-sizing:border-box
}

body {
  margin:0
}

a {
  color:inherit;
  text-decoration:none
}

button,input,select,textarea {
  font:inherit
}

button,a,input,textarea,select,summary {
  -webkit-tap-highlight-color:transparent
}

button,a,summary {
  touch-action:manipulation
}

img {
  max-width:100%;
  height:auto
}

button {
  cursor:pointer
}

a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible {
  outline:3px solid var(--red);
  outline-offset:5px
}

h1,h2,h3,p {
  margin-top:0
}

h1,h2,h3 {
  font-weight:500
}

p {
  font-size:1rem;
  line-height:1.75
}

h1 {
  font-size:clamp(2.65rem,5.25vw,5.3rem);
  letter-spacing:-.05em;
  line-height:1.04;
  margin-bottom:30px
}

h2 {
  font-size:clamp(2rem,3.25vw,3.45rem);
  line-height:1.12;
  letter-spacing:-.04em;
  margin-bottom:24px
}

h3 {
  font-size:1.45rem;
  line-height:1.2;
  letter-spacing:-.025em
}

::selection {
  background:var(--red);
  color:white
}

.skip-link {
  position:fixed;
  top:-100px;
  z-index:100;
  background:var(--red);
  color:white;
  padding:16px
}

.skip-link:focus {
  top:0
}

.header {
  height:92px;
  display:flex;
  align-items:center;
  gap:36px;
  padding:0 var(--gutter);
  border-bottom:1px solid var(--line);
  background:#fff;
  position:relative;
  z-index:10
}

.brand {
  display:inline-flex;
  align-items:center;
  gap:12px;
  white-space:nowrap;
  font-size:1.5rem;
  letter-spacing:-.07em
}

.brand b {
  font-weight:400
}

.brand-mark {
  display:inline-grid;
  place-items:center;
  background:var(--red);
  color:#fff;
  width:38px;
  height:38px;
  font-size:1.5rem;
  letter-spacing:-.1em;
  font-weight:700
}

.desktop-nav {
  display:flex;
  gap:30px;
  margin:auto;
  font-size:.9rem
}

.desktop-nav a {
  padding:10px 0;
  border-bottom:2px solid transparent
}

.desktop-nav a:hover,.desktop-nav a[aria-current] {
  border-color:var(--red)
}

.header-contact {
  font-size:.9rem;
  display:flex;
  gap:28px;
  align-items:center
}

.header-contact span {
  font-size:1.3rem;
  color:var(--red)
}

.mobile-nav {
  display:none
}

.eyebrow {
  font-size:.78rem;
  font-weight:600;
  letter-spacing:.13em;
  display:block;
  line-height:1.5;
  margin-bottom:26px;
  text-transform:uppercase
}

.red-line {
  display:inline-block;
  width:28px;
  height:3px;
  background:var(--red);
  vertical-align:middle;
  margin-right:12px
}

.hero {
  position:relative;
  min-height:690px;
  isolation:isolate;
  overflow:hidden;
  background:#f9fafb
}

.hero-image {
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
  z-index:-2
}

.hero:after {
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,#fff 0%,#fffffff2 18%,#ffffffa6 38%,transparent 61%);
  z-index:-1
}

.hero-content {
  padding:94px var(--gutter) 140px;
  max-width:850px
}

.hero-content h1 {
  max-width:660px
}

.hero-content p {
  color:#525960;
  max-width:475px;
  font-size:1.075rem
}

.hero-actions {
  display:flex;
  gap:30px;
  align-items:center;
  margin-top:38px
}

.button {
  display:inline-flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  padding:18px 25px;
  min-height:56px;
  border:1px solid var(--red);
  background:var(--red);
  color:white;
  font-size:.92rem;
  font-weight:500;
  transition:background .2s,transform .2s
}

.button:hover {
  background:#b7151c;
  border-color:#b7151c
}

.button:disabled {
  opacity:.55;
  cursor:default
}

.button span {
  font-size:1.25rem
}

.button-light {
  background:white;
  border-color:white;
  color:var(--ink)
}

.button-light:hover {
  background:#e5e8ec;
  border-color:#e5e8ec
}

.button-dark {
  background:var(--ink);
  border-color:var(--ink)
}

.button-dark:hover {
  background:#363d43;
  border-color:#363d43
}

.text-link {
  display:inline-flex;
  gap:28px;
  align-items:center;
  font-size:.93rem;
  line-height:1.6
}

.text-link:hover {
  color:var(--red)
}

.text-link span {
  font-size:1.25rem
}

.hero-foot {
  display:flex;
  align-items:center;
  justify-content:space-between;
  position:absolute;
  bottom:0;
  left:var(--gutter);
  right:var(--gutter);
  padding:25px 0;
  border-top:1px solid #abb3bc80;
  font-size:.76rem;
  letter-spacing:.08em
}

.hero-foot a {
  letter-spacing:0;
  font-size:.875rem
}

.hero-foot a span {
  padding-left:35px
}

.protocol-strip {
  padding:28px var(--gutter);
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  gap:22px;
  font-size:1rem
}

.protocol-strip>span:first-child {
  font-size:.75rem;
  letter-spacing:.1em;
  color:var(--muted);
  margin-right:auto
}

.separator {
  color:#b5bac0
}

.section {
  padding:100px var(--gutter);
  max-width:1800px;
  margin:auto
}

.section-heading {
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:60px;
  margin-bottom:42px
}

.section-heading h2 {
  margin-bottom:0
}

.section-heading>p {
  max-width:410px;
  color:var(--muted);
  margin-bottom:3px
}

.section-heading .eyebrow {
  color:var(--muted)
}

.product-grid {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  border:1px solid var(--line)
}

.product-card {
  padding:30px 30px 0;
  display:flex;
  flex-direction:column;
  min-height:345px;
  transition:background .2s
}

.product-card:not(:last-child) {
  border-right:1px solid var(--line)
}

.product-card:hover {
  background:var(--soft)
}

.card-top {
  display:flex;
  justify-content:space-between;
  margin-bottom:44px
}

.card-top>span:last-child {
  font-size:1.4rem;
  color:var(--red)
}

.index {
  font-size:.8rem;
  letter-spacing:.08em;
  color:var(--muted)
}

.product-role {
  font-size:.82rem;
  color:var(--muted);
  margin-bottom:9px
}

.product-card h3 {
  font-size:2.15rem;
  margin-bottom:20px
}

.product-card p {
  color:var(--muted);
  line-height:1.6;
  flex:1;
  margin-bottom:32px
}

.card-bottom {
  display:flex;
  justify-content:space-between;
  border-top:1px solid var(--line);
  padding:20px 0;
  font-size:.875rem
}

.dark-section {
  background:#1c2025;
  color:#fff;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:100px;
  padding:95px var(--gutter)
}

.dark-copy p {
  color:#b9c0c7;
  max-width:490px;
  margin-bottom:32px
}

.dark-copy .eyebrow {
  color:#b5bdc6
}

.system-map {
  display:flex;
  flex-direction:column;
  position:relative
}

.system-map:before {
  content:'';
  position:absolute;
  width:2px;
  background:var(--red-bright);
  left:25px;
  top:25px;
  bottom:25px
}

.system-map>div {
  position:relative;
  border:1px solid #51565d;
  padding:24px 30px 24px 65px;
  background:#1c2025;
  margin-bottom:20px
}

.system-map>div:before {
  content:'';
  position:absolute;
  left:18px;
  top:50%;
  width:15px;
  height:3px;
  background:var(--red-bright)
}

.system-map>div>span {
  display:block;
  font-size:.75rem;
  letter-spacing:.1em;
  color:#b7c0c9;
  margin-bottom:10px
}

.system-map strong {
  font-size:1.6rem;
  font-weight:400
}

.system-map small {
  font-size:.875rem;
  float:right;
  margin-top:8px;
  color:#c4cad0
}

.solution-list {
  border-top:1px solid var(--line)
}

.solution-list>a {
  display:grid;
  grid-template-columns:45px 1.2fr 1fr 25px;
  gap:25px;
  align-items:center;
  padding:30px 0;
  border-bottom:1px solid var(--line)
}

.solution-list h3,.solution-list p {
  margin:0
}

.solution-list p {
  color:var(--muted);
  font-size:.93rem
}

.solution-list>a>span:last-child {
  font-size:1.5rem;
  color:var(--red)
}

.solution-list>a:hover h3 {
  color:var(--red)
}

.cta {
  padding:75px var(--gutter);
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:70px;
  background:var(--red);
  color:white
}

.cta .eyebrow {
  color:white
}

.cta h2 {
  margin:0
}

.cta>div:last-child {
  align-self:end
}

.cta p {
  margin-bottom:25px
}

.footer {
  padding:55px var(--gutter) 22px
}

.footer-top {
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:30px;
  padding-bottom:45px
}

.footer-top p {
  color:var(--muted);
  font-size:.93rem;
  margin:0
}

.footer-top .text-link {
  align-self:center
}

.footer-bottom {
  display:flex;
  flex-wrap:wrap;
  gap:30px;
  align-items:center;
  border-top:1px solid var(--line);
  padding-top:22px;
  color:var(--muted);
  font-size:.78rem
}

.footer-signature {
  margin-left:auto;
  letter-spacing:.1em
}

.page-intro {
  padding:85px var(--gutter) 75px;
  border-top:3px solid var(--red);
  max-width:1800px;
  margin:auto
}

.page-intro>p {
  font-size:1.125rem;
  color:var(--muted);
  max-width:690px;
  margin-bottom:0
}

.page-intro .eyebrow {
  color:var(--red)
}

.section-topless {
  padding-top:20px
}

.back-link {
  display:block;
  font-size:.9rem;
  color:var(--muted);
  margin-bottom:40px
}

.back-link:hover {
  color:var(--red)
}

.red-period {
  color:var(--red)
}

.content-split {
  display:grid;
  grid-template-columns:1fr 1.5fr;
  gap:80px
}

.prose {
  font-size:1.05rem;
  line-height:1.8;
  overflow-wrap:anywhere
}

.prose p {
  font-size:inherit;
  line-height:inherit
}

.prose h3 {
  margin-top:40px
}

.prose .button {
  margin-top:24px
}

.prose a:not(.button):not(.text-link) {
  text-decoration:underline;
  text-underline-offset:3px
}

.content-image {
  width:100%;
  display:block;
  margin:30px 0
}

.feature-list {
  list-style:none;
  padding:0;
  margin:20px 0 30px
}

.feature-list li {
  padding:15px 0 15px 24px;
  border-bottom:1px solid var(--line);
  position:relative;
  font-size:1rem
}

.feature-list li:before {
  content:'';
  width:7px;
  height:3px;
  background:var(--red);
  position:absolute;
  left:0;
  top:25px
}

.architecture-explorer {
  display:grid;
  grid-template-columns:1fr 1.4fr;
  border:1px solid var(--line);
  min-height:400px
}

.architecture-switcher {
  display:flex;
  flex-direction:column;
  background:var(--soft)
}

.architecture-switcher button {
  display:grid;
  grid-template-columns:40px 1fr;
  text-align:left;
  align-content:center;
  gap:8px 12px;
  border:0;
  border-bottom:1px solid var(--line);
  border-left:3px solid transparent;
  background:transparent;
  color:var(--ink);
  padding:28px;
  flex:1
}

.architecture-switcher button[aria-pressed=true] {
  background:white;
  border-left-color:var(--red)
}

.architecture-switcher button>strong {
  font-size:1.6rem;
  font-weight:500
}

.architecture-switcher button>span:last-child {
  grid-column:2;
  font-size:.875rem;
  color:var(--muted)
}

.architecture-detail {
  padding:40px
}

.architecture-detail .eyebrow {
  color:var(--red);
  margin-bottom:12px
}

.architecture-detail h3 {
  font-size:2.2rem
}

.architecture-detail>p {
  color:var(--muted)
}

.soft-section {
  background:var(--soft)
}

.principle-grid {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:50px
}

.principle-grid .index {
  display:block;
  margin-bottom:32px
}

.principle-grid p {
  color:var(--muted)
}

.solution-details article {
  border-top:1px solid var(--line);
  padding:45px 0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:15px 60px;
  scroll-margin-top:30px
}

.solution-details article>.eyebrow {
  grid-column:1/-1
}

.solution-details article>.text-link {
  grid-column:2
}

.solution-details h2 {
  font-size:2rem
}

.solution-details p {
  color:var(--muted)
}

.article-grid {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:30px
}

.article-card {
  border-top:1px solid var(--line);
  padding-top:25px;
  display:flex;
  flex-direction:column
}

.article-card img {
  aspect-ratio:3/2;
  object-fit:cover;
  margin-bottom:24px
}

.article-card time {
  font-size:.8rem;
  color:var(--muted);
  margin-bottom:15px;
  display:block
}

.article-card h3 {
  margin-bottom:16px
}

.article-card p {
  color:var(--muted);
  flex:1
}

.article-card:hover h3 {
  color:var(--red)
}

.article-body {
  max-width:840px;
  margin:0 auto;
  padding:0 25px 100px
}

.article-intro h1 {
  max-width:1050px;
  font-size:clamp(2.4rem,4.5vw,4.4rem)
}

.pagination {
  display:flex;
  gap:30px;
  justify-content:center;
  margin-top:55px
}

.empty-state {
  padding:32px;
  background:var(--soft);
  grid-column:1/-1
}

.empty-state h2 {
  font-size:1.7rem
}

.empty-state p {
  color:var(--muted)
}

.contact-layout {
  display:grid;
  grid-template-columns:1fr 1.35fr;
  gap:70px
}

.contact-info .eyebrow {
  color:var(--muted)
}

.email-link {
  font-size:clamp(1.1rem,1.65vw,1.6rem);
  letter-spacing:-.03em;
  display:block;
  margin-bottom:26px;
  overflow-wrap:anywhere
}

.email-link:hover {
  color:var(--red)
}

.contact-note {
  margin-top:75px;
  color:var(--muted)
}

.contact-note .red-line {
  margin-bottom:24px
}

.form-row {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:25px
}

.field {
  margin-bottom:26px
}

.field label {
  display:block;
  font-size:.875rem;
  margin-bottom:12px
}

.field label>span {
  color:var(--red)
}

.field input,.field select,.field textarea {
  border:1px solid #aeb5bc;
  padding:14px 15px;
  width:100%;
  color:var(--ink);
  background:#fff;
  min-height:50px;
  border-radius:0
}

.field textarea {
  resize:vertical
}

.field input::placeholder,.field textarea::placeholder {
  color:#737b83;
  font-size:.9rem;
  opacity:1
}

.consent {
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:.875rem;
  line-height:1.7;
  color:var(--muted);
  margin-bottom:25px
}

.consent input {
  margin:4px 0 0;
  width:19px;
  height:19px;
  flex-shrink:0;
  accent-color:var(--red)
}

.consent a {
  color:var(--ink);
  text-decoration:underline;
  text-underline-offset:3px
}

.errorlist {
  color:#ac1820;
  font-size:.875rem;
  padding-left:20px;
  margin:8px 0
}

.form-notice {
  margin:24px 0;
  padding:22px;
  border-left:3px solid var(--red);
  background:var(--soft)
}

.form-notice p {
  margin-bottom:0
}

.form-notice.is-error {
  border-color:#ac1820
}

.form-notice ul {
  line-height:1.7;
  padding-left:20px
}

.journal-preview {
  padding-top:0
}

@media(min-width:1800px) {
  .hero-content {
    padding-left:max(var(--gutter),calc((100vw - 1600px)/2))
  }

  .hero-image {
    object-position:50% 58%
  }

}

@media(max-width:1100px) {
  .header {
    gap:20px
  }

  .desktop-nav {
    gap:20px
  }

  .header-contact {
    gap:12px
  }

  .brand {
    font-size:1.3rem
  }

  .hero-content {
    max-width:730px
  }

  .hero {
    min-height:650px
  }

  .hero-content h1 {
    max-width:550px
  }

  .dark-section {
    gap:50px
  }

  .system-map small {
    float:none;
    display:block
  }

  .solution-list>a {
    grid-template-columns:30px 1.3fr 1fr 20px;
    gap:18px
  }

  .product-card {
    padding:25px 22px 0
  }

  .contact-layout {
    gap:35px
  }

}

@media(max-width:800px) {
  .header {
    height:76px
  }

  .desktop-nav,.header-contact {
    display:none
  }

  .mobile-nav {
    display:block;
    margin-left:auto
  }

  .mobile-nav summary {
    cursor:pointer;
    padding:10px;
    font-size:.9rem
  }

  .mobile-nav nav {
    position:absolute;
    top:76px;
    left:0;
    right:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    display:flex;
    flex-direction:column;
    padding:20px var(--gutter);
    gap:20px
  }

  .hero {
    min-height:720px
  }

  .hero-content {
    padding-top:55px;
    padding-bottom:320px;
    max-width:640px
  }

  .hero-image {
    object-position:68% bottom;
    opacity:.75
  }

  .hero:after {
    background:linear-gradient(180deg,#fffffff5 0%,#fffffff5 20%,#ffffffb3 45%,transparent 80%)
  }

  .hero-content h1 {
    max-width:530px
  }

  .hero-content p {
    max-width:470px
  }

  .hero-actions {
    gap:22px;
    margin-top:25px
  }

  .hero-foot>span {
    display:none
  }

  .hero-foot {
    background:#ffffffbb
  }

  .protocol-strip {
    justify-content:center;
    padding:24px var(--gutter);
    gap:16px;
    font-size:.875rem;
    flex-wrap:wrap
  }

  .protocol-strip>span:first-child {
    width:100%;
    text-align:center;
    margin:0 0 6px
  }

  .section {
    padding-top:65px;
    padding-bottom:65px
  }

  .section-topless {
    padding-top:0
  }

  .section-heading {
    align-items:flex-start;
    flex-direction:column;
    gap:24px
  }

  .section-heading>p {
    max-width:600px
  }

  .product-grid {
    grid-template-columns:1fr
  }

  .product-card {
    min-height:0;
    padding:25px 28px 0
  }

  .product-card:not(:last-child) {
    border-right:0;
    border-bottom:1px solid var(--line)
  }

  .card-top {
    margin-bottom:25px
  }

  .product-card p {
    max-width:580px
  }

  .dark-section {
    grid-template-columns:1fr;
    gap:42px;
    padding-top:65px;
    padding-bottom:65px
  }

  .system-map small {
    float:right;
    display:inline
  }

  .solution-list>a {
    grid-template-columns:25px 1fr 20px;
    gap:14px
  }

  .solution-list p {
    grid-column:2
  }

  .solution-list>a>span:last-child {
    grid-column:3;
    grid-row:1/3
  }

  .cta {
    grid-template-columns:1fr;
    gap:30px;
    padding-top:55px;
    padding-bottom:55px
  }

  .footer-top {
    flex-wrap:wrap
  }

  .footer-top .text-link {
    width:100%
  }

  .footer-signature {
    width:100%;
    margin:5px 0 0
  }

  .page-intro {
    padding-top:55px;
    padding-bottom:55px
  }

  .content-split,.contact-layout {
    grid-template-columns:1fr;
    gap:30px
  }

  .contact-note {
    display:none
  }

  .architecture-explorer {
    grid-template-columns:1fr
  }

  .architecture-switcher {
    flex-direction:row
  }

  .architecture-switcher button {
    padding:18px 14px;
    display:block;
    border-left:0;
    border-top:3px solid transparent
  }

  .architecture-switcher button[aria-pressed=true] {
    border-top-color:var(--red);
    border-left-color:transparent
  }

  .architecture-switcher button>strong {
    font-size:1.25rem;
    display:block;
    margin-top:10px
  }

  .architecture-switcher button>span:last-child {
    display:none
  }

  .architecture-detail {
    padding:28px
  }

  .principle-grid {
    grid-template-columns:1fr;
    gap:28px
  }

  .principle-grid article {
    border-top:1px solid var(--line);
    padding-top:24px
  }

  .principle-grid .index {
    margin-bottom:20px
  }

  .solution-details article {
    grid-template-columns:1fr;
    gap:10px
  }

  .solution-details article>.text-link {
    grid-column:1
  }

  .article-grid {
    grid-template-columns:1fr
  }

  .article-card {
    padding-bottom:20px
  }

  .journal-preview {
    padding-top:10px
  }

}

@media(max-width:440px) {
  h1 {
    font-size:2.6rem
  }

  .hero-content {
    padding-top:45px
  }

  .hero-content h1 {
    font-size:2.7rem
  }

  .hero-actions {
    align-items:flex-start;
    flex-direction:column;
    gap:18px
  }

  .hero {
    min-height:800px
  }

  .hero-foot a {
    font-size:.82rem
  }

  .system-map small {
    float:none;
    display:block
  }

  .footer-top {
    flex-direction:column
  }

  .footer-bottom {
    gap:20px
  }

  .form-row {
    grid-template-columns:1fr;
    gap:0
  }

  .architecture-switcher button>strong {
    font-size:1rem
  }

  .architecture-switcher button {
    padding:15px 10px
  }

}

@media(prefers-reduced-motion:reduce) {
  *,*:before,*:after {
    transition:none!important;
    scroll-behavior:auto!important
  }

}

@media print {
  .header,.footer,.cta,.hero-image,.hero-foot,.button,.mobile-nav {
    display:none
  }

  .hero,.section,.page-intro {
    min-height:0;
    padding:20px 0
  }

  .hero-content {
    padding:0
  }

  .hero:after {
    display:none
  }

  .dark-section {
    background:white;
    color:black
  }

  .dark-section p {
    color:black
  }

  .system-map {
    display:none
  }

  .dark-section {
    display:block
  }

  .product-grid {
    display:block
  }

  .product-card {
    border:0;
    padding:10px 0
  }

  a {
    color:black
  }

  .contact-layout {
    display:block
  }

}