:root {
  color-scheme: dark;
  --black: #070809;
  --black-soft: #0b0c0d;
  --panel: #121416;
  --panel-2: #191c1f;
  --white: #ffffff;
  --off-white: #f4f2e9;
  --muted: #b8b9b8;
  --muted-2: #85898e;
  --line: rgba(255, 255, 255, .15);
  --line-strong: rgba(255, 255, 255, .28);
  --yellow: #f5d14e;
  --yellow-hover: #ffe173;
  --yellow-soft: rgba(245, 209, 78, .13);
  --shadow: 0 32px 90px rgba(0, 0, 0, .52);
  --radius: 18px;
  --radius-lg: 28px;
  --shell: min(1320px, calc(100% - 64px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--black); }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--black);
  color: var(--white);
  font-family: "Ubuntu Sans", Aptos, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
button { color: inherit; font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
img { max-width: 100%; }
p { margin-block-start: 0; color: var(--muted); line-height: 1.64; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 {
  font-family: "Arial Narrow", "Aptos Display", "Segoe UI", Arial, sans-serif;
  font-stretch: condensed;
  text-transform: uppercase;
  letter-spacing: -.05em;
}
h3 { letter-spacing: -.025em; }
button:focus-visible, a:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }
[hidden] { display: none !important; }

.shell { width: var(--shell); margin-inline: auto; }
.skip-link {
  position: fixed;
  z-index: 200;
  top: -80px;
  left: 16px;
  padding: 11px 16px;
  border-radius: 8px;
  background: var(--yellow);
  color: var(--black);
  font-weight: 850;
  transition: top .2s ease;
}
.skip-link:focus { top: 14px; }

.eyebrow {
  color: var(--yellow);
  font-size: 10px;
  font-weight: 880;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.micro-label {
  color: var(--muted-2);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.button {
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-size: 12px;
  font-weight: 850;
  transition: transform .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-2px); }
.button svg, .text-link svg, .window-cta svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.button-primary { border-color: var(--yellow); background: var(--yellow); color: var(--black); }
.button-primary:hover { border-color: var(--yellow-hover); background: var(--yellow-hover); }
.button-ghost { border-color: var(--line-strong); background: rgba(8, 9, 10, .45); color: var(--white); backdrop-filter: blur(12px); }
.button-ghost:hover, .button-outline:hover { border-color: var(--yellow); color: var(--yellow); }
.button-outline { border-color: var(--line); background: var(--panel); color: var(--white); }
.button-small { min-height: 40px; padding: 9px 15px; font-size: 11px; }
.button-row { display: flex; flex-wrap: wrap; gap: 10px; }
.text-link {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--yellow);
  font-size: 12px;
  font-weight: 850;
}
.text-link:hover { color: var(--white); }

.concept-bar { min-height: 36px; display: flex; align-items: center; background: var(--yellow); color: var(--black); }
.concept-bar-inner { min-height: 36px; display: flex; align-items: center; gap: 12px; font-size: 10px; font-weight: 780; letter-spacing: .02em; }
.concept-bar-inner > a { margin-left: auto; border-bottom: 1px solid rgba(7, 8, 9, .52); font-weight: 850; }
.concept-pill { padding: 4px 9px; border: 1px solid rgba(7, 8, 9, .46); border-radius: 999px; font-size: 8px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  min-height: 78px;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 8, 9, .91);
  backdrop-filter: blur(20px);
}
.header-inner { min-height: 78px; display: grid; grid-template-columns: 220px 1fr auto; align-items: center; gap: 25px; }
.brand { width: 192px; }
.brand img { width: 100%; height: 53px; object-fit: contain; object-position: left center; }
.desktop-nav { justify-self: center; display: flex; align-items: center; gap: 6px; }
.desktop-nav a { position: relative; padding: 12px; color: var(--muted); font-size: 12px; font-weight: 760; }
.desktop-nav a::after { content: ""; position: absolute; right: 12px; bottom: 4px; left: 12px; height: 2px; background: var(--yellow); transform: scaleX(0); transition: transform .18s ease; }
.desktop-nav a:hover { color: var(--white); }
.desktop-nav a:hover::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; justify-content: flex-end; gap: 10px; }
.menu-button { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); place-items: center; cursor: pointer; }
.menu-button svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.mobile-menu { position: fixed; z-index: 99; top: 124px; right: 16px; left: 16px; padding: 9px; border: 1px solid var(--line-strong); border-radius: 18px; background: rgba(16, 18, 20, .98); box-shadow: var(--shadow); }
.mobile-menu > a:not(.button) { display: block; padding: 14px; border-radius: 10px; color: var(--muted); font-size: 13px; font-weight: 760; }
.mobile-menu > a:not(.button):hover { background: var(--panel-2); color: var(--white); }
.mobile-menu .button { width: 100%; margin-top: 5px; }

.hero { position: relative; isolation: isolate; min-height: calc(100vh - 114px); overflow: hidden; background: var(--black) url("assets/architectural-aerial.jpeg") center 46% / cover no-repeat; }
.hero-overlay { position: absolute; z-index: -1; inset: 0; background: linear-gradient(92deg, rgba(4, 5, 6, .98) 0%, rgba(4, 5, 6, .92) 42%, rgba(4, 5, 6, .65) 72%, rgba(4, 5, 6, .79) 100%); }
.hero-overlay::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 73% 38%, rgba(245, 209, 78, .12), transparent 27%); }
.hero-grid { min-height: 720px; padding-block: 76px 56px; display: grid; grid-template-columns: minmax(430px, .88fr) minmax(600px, 1.12fr); align-items: center; gap: clamp(44px, 5vw, 80px); }
.hero-copy { position: relative; z-index: 2; }
.hero-copy h1 { max-width: 700px; margin: 15px 0 24px; font-size: clamp(65px, 6.8vw, 105px); line-height: .86; }
.hero-lead { max-width: 640px; margin-bottom: 30px; color: #e4e3df; font-size: clamp(17px, 1.55vw, 22px); line-height: 1.52; }
.hero-disclosure { max-width: 600px; margin: 20px 0 0; color: #a9aaab; font-size: 10px; }

.product-window { overflow: hidden; border: 1px solid rgba(255, 255, 255, .27); border-radius: 20px; background: #0b0c0d; box-shadow: var(--shadow); }
.hero-window { position: relative; z-index: 1; width: 111%; transform: perspective(1600px) rotateY(-6deg) rotateZ(1deg); transform-origin: left center; transition: transform .35s ease, border-color .25s ease; }
.hero-window:hover { border-color: rgba(245, 209, 78, .65); transform: perspective(1600px) rotateY(-3deg) rotateZ(.3deg) translateY(-5px); }
.window-bar { min-height: 42px; padding: 0 14px; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 72px 1fr auto; align-items: center; gap: 12px; color: var(--muted-2); font-size: 9px; font-weight: 760; }
.window-bar strong { color: var(--yellow); font-size: 8px; letter-spacing: .08em; text-transform: uppercase; }
.window-dots { display: flex; gap: 5px; }
.window-dots i { width: 7px; height: 7px; border-radius: 50%; background: #34373a; }
.window-dots i:first-child { background: var(--yellow); }
.product-window > img { width: 100%; height: auto; }
.window-cta { position: absolute; right: 16px; bottom: 16px; padding: 10px 14px; border: 1px solid rgba(245, 209, 78, .44); border-radius: 999px; display: inline-flex; align-items: center; gap: 7px; background: rgba(8, 9, 10, .9); color: var(--yellow); font-size: 10px; font-weight: 850; backdrop-filter: blur(12px); }
.principle-strip { min-height: 76px; border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(3, 1fr); align-items: center; }
.principle-strip span { min-height: 30px; padding: 0 24px; border-right: 1px solid var(--line); display: flex; align-items: center; gap: 15px; color: #e2e1dd; font-size: 11px; font-weight: 780; }
.principle-strip span:first-child { padding-left: 0; }
.principle-strip span:last-child { border-right: 0; }
.principle-strip i { color: var(--yellow); font-size: 9px; font-style: normal; font-weight: 900; letter-spacing: .08em; }

.section { padding-block: 130px; }
.section-grid { display: grid; grid-template-columns: minmax(320px, .82fr) minmax(500px, 1.18fr); gap: clamp(70px, 10vw, 160px); }
.section-intro h2, .section-heading h2, .boundary-intro h2, .research-copy h2 { margin: 16px 0 22px; font-size: clamp(49px, 5.4vw, 82px); line-height: .94; }
.section-intro > p { max-width: 520px; font-size: 18px; }
.sticky-intro { align-self: start; position: sticky; top: 135px; }
.problem-section { background: var(--black-soft); }
.problem-stack { display: grid; gap: 13px; }
.problem-card { min-height: 184px; padding: 29px; border: 1px solid var(--line); border-radius: var(--radius); display: grid; grid-template-columns: 55px 1fr; gap: 22px; align-items: start; background: var(--panel); transition: border-color .2s ease, transform .2s ease; }
.problem-card:hover { border-color: rgba(245, 209, 78, .45); transform: translateX(-5px); }
.card-number { width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; background: var(--yellow); color: var(--black); font-size: 10px; font-weight: 900; }
.problem-card h3 { margin: 2px 0 9px; font-size: 25px; }
.problem-card p { max-width: 600px; margin-bottom: 0; font-size: 15px; }

.product-section { overflow: hidden; background: var(--black); }
.centred-heading { max-width: 900px; margin: 0 auto 48px; text-align: center; }
.centred-heading p { max-width: 720px; margin: 0 auto; font-size: 17px; }
.product-tabs { width: fit-content; margin: 0 auto 20px; padding: 5px; border: 1px solid var(--line); border-radius: 999px; display: flex; background: var(--panel); }
.product-tab { min-height: 42px; padding: 9px 18px; border: 0; border-radius: 999px; background: transparent; color: var(--muted); font-size: 11px; font-weight: 850; cursor: pointer; }
.product-tab.active { background: var(--yellow); color: var(--black); }
.product-showcase { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 315px; align-items: end; gap: 25px; }
.product-showcase::before { content: ""; position: absolute; z-index: -1; top: 12%; right: 5%; width: 420px; height: 420px; border-radius: 50%; background: rgba(245, 209, 78, .09); filter: blur(70px); }
.showcase-window { min-height: 0; }
.product-image { width: 100%; animation: product-in .35s ease both; }
@keyframes product-in { from { opacity: .35; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.product-caption { margin-bottom: 12px; padding: 25px; border: 1px solid rgba(245, 209, 78, .4); border-radius: var(--radius); background: var(--yellow-soft); }
.caption-index { color: var(--yellow); font-size: 9px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.product-caption h3 { margin: 13px 0 10px; font-size: 26px; line-height: 1.06; }
.product-caption p { margin-bottom: 20px; font-size: 13px; }

.how-section { border-block: 1px solid var(--line); background: #0a0b0c; }
.split-heading { margin-bottom: 50px; display: grid; grid-template-columns: 1fr 460px; align-items: end; gap: 60px; }
.split-heading h2 { margin-bottom: 0; }
.split-heading > p { margin-bottom: 6px; font-size: 17px; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.step-card { position: relative; min-height: 350px; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); display: flex; flex-direction: column; background: var(--panel); }
.step-card.featured-step { border-color: rgba(245, 209, 78, .45); background: linear-gradient(145deg, rgba(245, 209, 78, .14), var(--panel) 48%); }
.step-number { position: absolute; top: 24px; right: 26px; color: var(--muted-2); font-size: 10px; font-weight: 900; letter-spacing: .1em; }
.step-icon { width: 58px; height: 58px; margin-bottom: auto; border-radius: 16px; display: grid; place-items: center; background: var(--yellow); color: var(--black); }
.step-icon svg { width: 27px; height: 27px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }
.step-card h3 { margin: 50px 0 10px; font-size: 27px; }
.step-card p { margin-bottom: 0; font-size: 14px; }

.audience-section { position: relative; isolation: isolate; padding-block: 110px; overflow: hidden; background: var(--black); }
.audience-photo { position: absolute; z-index: -2; inset: 0; background: url("assets/architectural-redbrick.jpeg") center 52% / cover no-repeat; }
.audience-section::after { content: ""; position: absolute; z-index: -1; inset: 0; background: linear-gradient(90deg, rgba(5, 6, 7, .94), rgba(5, 6, 7, .74) 50%, rgba(5, 6, 7, .92)); }
.audience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.audience-card { min-height: 505px; padding: clamp(35px, 4vw, 58px); border: 1px solid var(--line-strong); border-radius: var(--radius-lg); display: flex; flex-direction: column; background: rgba(9, 10, 11, .8); backdrop-filter: blur(16px); box-shadow: var(--shadow); }
.reviewer-card { border-color: rgba(245, 209, 78, .42); }
.audience-card h2 { margin: 16px 0 28px; font-size: clamp(42px, 4.2vw, 66px); line-height: .95; }
.check-list { margin: 0 0 34px; padding: 0; display: grid; gap: 13px; list-style: none; }
.check-list li { position: relative; padding-left: 25px; color: #d7d7d4; font-size: 13px; line-height: 1.5; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--yellow); font-weight: 900; }
.audience-card .text-link { margin-top: auto; }

.boundary-section { background: var(--off-white); color: var(--black); }
.boundary-grid { display: grid; grid-template-columns: .75fr 1.25fr; align-items: center; gap: clamp(60px, 9vw, 140px); }
.boundary-intro .eyebrow { color: #705c09; }
.boundary-intro p { max-width: 470px; color: #55585a; font-size: 17px; }
.boundary-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.boundary-card { min-height: 365px; padding: 27px; border: 1px solid rgba(7, 8, 9, .16); border-radius: var(--radius); background: #fff; }
.boundary-card.positive { background: var(--yellow); }
.boundary-symbol { width: 42px; height: 42px; border: 1px solid rgba(7, 8, 9, .25); border-radius: 50%; display: grid; place-items: center; color: var(--black); font-size: 21px; font-weight: 500; }
.boundary-card h3 { margin: 80px 0 18px; font-size: 24px; }
.boundary-card ul { margin: 0; padding-left: 18px; display: grid; gap: 11px; color: #444749; font-size: 13px; line-height: 1.48; }

.research-section { background: var(--black-soft); }
.research-card { position: relative; isolation: isolate; overflow: hidden; padding: clamp(45px, 6vw, 82px); border: 1px solid var(--line); border-radius: var(--radius-lg); display: grid; grid-template-columns: minmax(0, 1fr) 370px; gap: clamp(55px, 8vw, 120px); background: linear-gradient(135deg, #111315 0%, #0a0b0c 74%); box-shadow: var(--shadow); }
.research-card::before { content: ""; position: absolute; z-index: -1; top: -150px; left: 40%; width: 400px; height: 400px; border: 1px solid rgba(245, 209, 78, .24); border-radius: 50%; }
.research-copy > p { max-width: 680px; margin-bottom: 28px; font-size: 17px; }
.founder-card { align-self: center; padding: 28px; border: 1px solid rgba(245, 209, 78, .42); border-radius: var(--radius); background: var(--yellow-soft); }
.founder-avatar { width: 68px; height: 68px; margin-bottom: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--yellow); color: var(--black); font-size: 18px; font-weight: 900; }
.founder-card h3 { margin: 7px 0 11px; font-size: 30px; }
.founder-card > p { font-size: 13px; }
.founder-meta { margin-top: 25px; padding-top: 18px; border-top: 1px solid var(--line); display: grid; gap: 7px; color: var(--muted); font-size: 11px; }
.founder-meta a { color: var(--yellow); font-weight: 800; }

.closing-section { position: relative; overflow: hidden; padding-block: 135px; text-align: center; background: var(--black); }
.closing-section::before { content: ""; position: absolute; left: 50%; bottom: -330px; width: 760px; height: 760px; border: 1px solid rgba(245, 209, 78, .25); border-radius: 50%; transform: translateX(-50%); }
.closing-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }
.closing-inner > img { width: 76px; height: 76px; margin-bottom: 28px; }
.closing-inner h2 { max-width: 1000px; margin: 15px auto 20px; font-size: clamp(51px, 6.6vw, 96px); line-height: .9; }
.closing-inner p { margin-bottom: 28px; font-size: 17px; }

.site-footer { border-top: 1px solid var(--line); background: #050607; }
.footer-grid { min-height: 230px; padding-block: 47px; display: grid; grid-template-columns: 1fr 190px 390px; align-items: start; gap: 70px; }
.footer-brand img { width: 188px; height: 52px; object-fit: contain; object-position: left; }
.footer-brand p { margin: 10px 0 0; font-size: 12px; }
.footer-kicker { margin-bottom: 5px; color: var(--yellow); font-size: 8px; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
.footer-links, .footer-contact { display: grid; align-content: start; gap: 10px; }
.footer-links { color: var(--muted); font-size: 11px; font-weight: 760; }
.footer-links a:hover { color: var(--yellow); }
.footer-email { width: fit-content; color: var(--white); font-size: 18px; font-weight: 830; letter-spacing: -.025em; }
.footer-email:hover { color: var(--yellow); }
.footer-linkedin { width: fit-content; color: var(--yellow); font-size: 11px; font-weight: 830; }
.footer-linkedin:hover { color: var(--white); }
.footer-disclosure { margin: 9px 0 0; padding-top: 16px; border-top: 1px solid var(--line); font-size: 10px; }
.footer-disclosure strong { color: #ddd; }
.footer-bottom { min-height: 53px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted-2); font-size: 9px; }

.error-page { min-height: 100vh; display: grid; place-items: center; background: var(--black) url("assets/architectural-aerial.jpeg") center / cover no-repeat; }
.error-panel { width: min(660px, calc(100% - 32px)); padding: 50px; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); background: rgba(7, 8, 9, .9); box-shadow: var(--shadow); backdrop-filter: blur(18px); text-align: center; }
.error-panel img { width: 190px; height: 55px; margin: 0 auto 40px; object-fit: contain; }
.error-panel h1 { margin-bottom: 16px; font-size: clamp(66px, 11vw, 120px); line-height: .85; }
.error-panel p { max-width: 480px; margin: 0 auto 25px; }

@media (max-width: 1180px) {
  :root { --shell: min(100% - 48px, 1120px); }
  .desktop-nav { display: none; }
  .header-inner { grid-template-columns: 1fr auto; }
  .menu-button { display: grid; }
  .hero-grid { min-height: 760px; grid-template-columns: minmax(360px, .82fr) minmax(510px, 1.18fr); gap: 35px; }
  .hero-copy h1 { font-size: clamp(61px, 7.5vw, 86px); }
  .product-showcase { grid-template-columns: minmax(0, 1fr) 280px; }
  .footer-grid { grid-template-columns: 1fr 170px 340px; gap: 38px; }
}

@media (max-width: 960px) {
  .section { padding-block: 100px; }
  .hero-grid { padding-block: 70px 50px; grid-template-columns: 1fr; }
  .hero-copy { max-width: 750px; }
  .hero-window { width: 100%; max-width: 900px; transform: none; }
  .hero-window:hover { transform: translateY(-4px); }
  .principle-strip { min-height: 66px; }
  .section-grid, .boundary-grid { grid-template-columns: 1fr; gap: 45px; }
  .sticky-intro { position: static; }
  .problem-stack { grid-template-columns: repeat(3, 1fr); }
  .problem-card { min-height: 300px; grid-template-columns: 1fr; }
  .problem-card:hover { transform: translateY(-4px); }
  .product-showcase { grid-template-columns: 1fr; }
  .product-caption { margin: -2px 0 0; display: grid; grid-template-columns: 100px 1fr auto; align-items: center; gap: 20px; }
  .product-caption h3, .product-caption p { margin: 0; }
  .split-heading { grid-template-columns: 1fr; gap: 20px; }
  .steps-grid { gap: 10px; }
  .step-card { min-height: 330px; padding: 23px; }
  .audience-grid { grid-template-columns: 1fr; }
  .audience-card { min-height: 440px; }
  .boundary-cards { max-width: 800px; }
  .research-card { grid-template-columns: 1fr; }
  .founder-card { max-width: 590px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  :root { --shell: calc(100% - 32px); }
  .concept-bar { min-height: 42px; }
  .concept-bar-inner { min-height: 42px; gap: 8px; font-size: 8px; }
  .concept-bar-inner > a { display: none; }
  .concept-pill { flex: 0 0 auto; }
  .site-header, .header-inner { min-height: 68px; }
  .brand { width: 164px; }
  .brand img { height: 46px; }
  .header-actions > .button { display: none; }
  .mobile-menu { top: 119px; }
  .hero { min-height: 0; }
  .hero-grid { min-height: 0; padding-block: 66px 36px; }
  .hero-copy h1 { font-size: clamp(54px, 17vw, 78px); }
  .hero-lead { font-size: 16px; }
  .button-row { align-items: stretch; }
  .button-row .button { flex: 1 1 100%; }
  .window-bar { min-height: 36px; grid-template-columns: 46px 1fr auto; padding-inline: 10px; }
  .window-dots i { width: 6px; height: 6px; }
  .window-cta { display: none; }
  .principle-strip { padding-block: 14px; grid-template-columns: 1fr; gap: 0; }
  .principle-strip span { min-height: 39px; padding: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .principle-strip span:last-child { border-bottom: 0; }
  .section { padding-block: 78px; }
  .section-intro h2, .section-heading h2, .boundary-intro h2, .research-copy h2 { font-size: clamp(44px, 13vw, 62px); }
  .section-intro > p, .centred-heading p, .split-heading > p, .research-copy > p { font-size: 15px; }
  .section-grid { gap: 35px; }
  .problem-stack { grid-template-columns: 1fr; }
  .problem-card { min-height: 0; padding: 23px; grid-template-columns: 48px 1fr; }
  .card-number { width: 43px; height: 43px; }
  .problem-card h3 { font-size: 21px; }
  .product-tabs { width: 100%; }
  .product-tab { flex: 1; padding-inline: 10px; }
  .showcase-window .window-bar > span:nth-child(2) { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .product-caption { padding: 21px; display: block; }
  .product-caption h3 { margin: 11px 0 8px; font-size: 23px; }
  .product-caption p { margin-bottom: 18px; }
  .steps-grid { grid-template-columns: 1fr; }
  .step-card { min-height: 275px; }
  .step-icon { margin-bottom: 35px; }
  .step-card h3 { margin: 0 0 8px; }
  .audience-section { padding-block: 65px; }
  .audience-card { min-height: 430px; padding: 30px 24px; }
  .audience-card h2 { font-size: clamp(39px, 11vw, 54px); }
  .boundary-grid { gap: 34px; }
  .boundary-cards { grid-template-columns: 1fr; }
  .boundary-card { min-height: 310px; }
  .boundary-card h3 { margin-top: 55px; }
  .research-card { width: calc(100% - 24px); padding: 34px 22px; gap: 40px; }
  .founder-card { padding: 23px; }
  .closing-section { padding-block: 95px; }
  .closing-inner h2 { font-size: clamp(48px, 14vw, 70px); }
  .footer-grid { grid-template-columns: 1fr; gap: 33px; }
  .footer-bottom { padding-block: 18px; flex-direction: column; align-items: flex-start; }
  .error-panel { padding: 40px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}