/* Hallmark · industrial engineering sheet · 2D execution diagrams
   User direction: dynamic B2B website, light/orange, no 3D; local review only. */
:root {
  --paper: #f6f7f5; --white: #fff; --ink: #20241f; --muted: #5d645d;
  --line: #d8dcd4; --soft: #e9ede5; --orange: #fa5b21; --orange-dark: #a93208;
  --stage-ink: #271e17; --stage-line: #ae3d15; --dark: #222922; --dark-muted: #c0c8bb;
  --green: #276137; --green-soft: #e0eddf; --error: #a32424; --error-soft: #fbe8e5;
  --overlay: #182019a6; --shadow: #15201426;
  --font: 'Manrope', sans-serif; --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
  --ease: cubic-bezier(.16,1,.3,1); --radius: 6px; --max: 1280px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; overflow-x: clip; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.65 var(--font); overflow-x: clip; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }
figure { margin: 0; }
h1, h2, h3 { margin: 0; font-style: normal; font-weight: 750; line-height: 1.08; letter-spacing: -.04em; text-wrap: balance; overflow-wrap: anywhere; min-width: 0; }
h2 { font-size: clamp(2.3rem,4.4vw,3.8rem); }
h3 { font-size: 1.6rem; letter-spacing: -.025em; }
small { font-size: .8125rem; }
svg { display: block; }
button, a, input, select, textarea, summary { outline-offset: 5px; }
:focus-visible { outline: 2px solid var(--orange-dark); }
[hidden] { display: none !important; }
.container { width: min(var(--max),calc(100% - 96px)); margin-inline: auto; }
.section { padding: 104px 0; scroll-margin-top: 80px; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 100; background: var(--ink); color: var(--white); padding: 12px 20px; }
.skip-link:focus { top: 10px; }
.site-header { position: sticky; top: 0; z-index: 20; background: var(--paper); border-bottom: 1px solid var(--line); }
.header-container { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 1.6rem; font-weight: 800; letter-spacing: -.055em; white-space: nowrap; }
.brand-icon-svg { width: 28px; height: 28px; }
.nav-links { display: flex; align-items: center; gap: 32px; font-size: .875rem; font-weight: 600; }
.nav-links a { white-space: nowrap; transition: color .18s; }
.nav-links a:hover { color: var(--orange-dark); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 28px; min-height: 52px; padding: 12px 22px; border: 1px solid transparent; border-radius: 3px; font-size: .875rem; font-weight: 700; line-height: 1.4; white-space: nowrap; transition: background .2s, color .2s, transform .2s; }
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }
.button-primary { background: var(--ink); color: var(--white); }
.button-primary:hover { background: var(--orange-dark); }
.button-secondary { background: transparent; border-color: var(--line); color: var(--ink); }
.button-secondary:hover { border-color: var(--ink); }
.button-small { min-height: 44px; padding: 10px 17px; }
.arrow { width: 20px; height: 1px; background: currentColor; position: relative; flex: none; }
.arrow::after { content: ''; position: absolute; right: 0; top: -4px; width: 9px; height: 9px; border-top: 1px solid currentColor; border-right: 1px solid currentColor; transform: rotate(45deg); }
.text-link { font-size: .875rem; font-weight: 650; border-bottom: 1px solid var(--ink); padding-bottom: 3px; white-space: nowrap; }
.menu-button { display: none; width: 44px; height: 44px; background: transparent; border: 1px solid var(--line); border-radius: 3px; padding: 12px; }
.menu-stroke { display: block; height: 1px; background: var(--ink); margin: 5px 0; }
.hero-content { display: grid; grid-template-columns: 1.6fr 1fr; align-items: end; gap: 56px; padding-top: 75px; padding-bottom: 62px; }
.hero-title-main { font-size: clamp(3.5rem,6.3vw,6rem); font-weight: 800; line-height: 1.03; }
.accent-text { color: var(--orange); }
.hero-intro { padding-bottom: 4px; max-width: 420px; }
.hero-subtitle { font-size: 1.35rem; line-height: 1.4; font-weight: 650; letter-spacing: -.02em; }
.hero-intro > p:not(.hero-subtitle) { color: var(--muted); font-size: .9375rem; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 22px; margin-top: 26px; }
.memory-stage { background: var(--orange); color: var(--stage-ink); padding: 24px 0 20px; }
.stage-heading { display: flex; justify-content: space-between; align-items: center; gap: 16px; font-weight: 650; font-size: .875rem; }
.motion-toggle { display: inline-flex; align-items: center; gap: 14px; min-height: 44px; padding: 8px 0 8px 12px; background: transparent; border: 0; color: inherit; font-size: .8125rem; }
.pause-icon { height: 12px; width: 7px; border-inline: 2px solid currentColor; }
.memory-machine { display: grid; grid-template-columns: 1.1fr .4fr 2.1fr .4fr 1fr; align-items: center; gap: 18px; min-height: 290px; padding: 30px 0; }
.diagram-label { font-size: .75rem; font-weight: 700; letter-spacing: .05em; }
.diagram-note { display: block; font-size: .75rem; margin-top: 20px; }
.source-stack { display: flex; height: 78px; gap: 6px; margin-top: 22px; }
.source-stack i { display: block; flex: 1; background: var(--stage-ink); transform-origin: bottom; animation: layer-lift 4s var(--ease) infinite; }
.source-stack i:nth-child(2n) { animation-delay: -.4s; }
.source-stack i:nth-child(3n) { animation-delay: -.8s; }
.source-stack i:nth-child(4n) { animation-delay: -1.2s; }
.flow-lane { position: relative; height: 1px; background: var(--stage-line); }
.flow-lane i { position: absolute; width: 7px; height: 7px; top: -3px; background: var(--stage-ink); animation: data-flow 2.6s linear infinite; }
.flow-lane i:nth-child(2) { animation-delay: -.86s; }
.flow-lane i:nth-child(3) { animation-delay: -1.72s; }
.memory-boundary { border: 1.5px solid var(--stage-ink); padding: 24px; position: relative; }
.boundary-heading { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.boundary-heading strong { font-size: 3.7rem; font-weight: 750; line-height: 1; letter-spacing: -.04em; white-space: nowrap; }
.boundary-heading strong small { font-size: 1.55rem; }
.boundary-heading > span { font-size: .75rem; font-weight: 650; line-height: 1.6; }
.working-set { display: flex; margin-top: 28px; gap: 3px; height: 48px; }
.working-set span { display: flex; align-items: center; justify-content: center; min-width: 0; font-size: .6875rem; font-weight: 700; transition: flex .6s var(--ease),background .6s; }
.resident-block { flex: 4; background: var(--stage-ink); color: var(--white); }
.stage-block { flex: 2; border: 1px solid var(--stage-ink); }
.kv-block { flex: 3; background: var(--paper); }
.budget-rule { display: flex; justify-content: space-between; margin-top: 8px; font: .6875rem var(--mono); }
.execution-result strong { font-size: 1.4rem; line-height: 1.2; display: block; margin-top: 18px; letter-spacing: -.03em; }
.token-lines { display: grid; gap: 5px; margin-top: 22px; }
.token-lines i { height: 5px; width: 100%; background: var(--stage-ink); transform-origin: left; animation: token-write 4s var(--ease) infinite; }
.token-lines i:nth-child(2) { width: 72%; animation-delay: -.3s; }
.token-lines i:nth-child(3) { width: 90%; animation-delay: -.6s; }
.token-lines i:nth-child(4) { width: 45%; animation-delay: -.9s; }
.stage-bottom { display: flex; align-items: center; gap: 22px; border-top: 1px solid var(--stage-line); padding-top: 18px; flex-wrap: wrap; }
.mode-switch { display: flex; gap: 4px; }
.mode-switch button { color: var(--stage-ink); background: transparent; border: 1px solid var(--stage-line); padding: 9px 13px; font-size: .75rem; font-weight: 650; min-height: 40px; border-radius: 3px; white-space: nowrap; }
.mode-switch button[aria-pressed=true] { color: var(--paper); background: var(--stage-ink); border-color: var(--stage-ink); }
.stage-bottom p { font-size: .75rem; margin: 0; flex: 1; }
.diagram-caption { font-size: .6875rem; display: block; }
[data-mode=resident] .stage-block { flex: .8; }
[data-mode=resident] .resident-block { flex: 7; }
[data-mode=resident] .source-stack i { animation: none; opacity: .45; }
[data-mode=resident] .flow-lane:not(.output-lane) i { visibility: hidden; }
.motion-paused *, .motion-paused *::before, .motion-paused *::after { animation-play-state: paused !important; }
.hero-proof-strip { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 18px; padding-block: 22px; font-size: .8125rem; color: var(--muted); border-bottom: 1px solid var(--line); }
.hero-proof-strip b { color: var(--ink); font-weight: 750; margin-right: 8px; }
.split-heading { display: grid; grid-template-columns: 1.2fr 1fr; gap: 70px; align-items: end; margin-bottom: 50px; }
.split-heading > p { color: var(--muted); max-width: 520px; margin: 0; }
.proof-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 36px; }
.evidence-stat-card { padding-top: 26px; border-top: 1px solid var(--line); }
.evidence-stat-card strong { display: block; font-size: 1.2rem; font-weight: 750; margin: 18px 0 10px; }
.evidence-stat-card p { color: var(--muted); font-size: .9375rem; max-width: 330px; }
.benefit-symbol { display: inline-block; width: 29px; height: 25px; position: relative; }
.symbol-memory { border: 1.5px solid var(--ink); border-radius: 2px; }
.symbol-memory::before { content: ''; position: absolute; inset: 6px; border: 1.5px solid var(--orange-dark); }
.symbol-bound { border: 1.5px dashed var(--ink); }
.symbol-bound::before { content: ''; position: absolute; inset: 6px; background: var(--orange); }
.symbol-local { border: 1.5px solid var(--ink); border-radius: 50%; }
.symbol-local::before { content: ''; position: absolute; inset: 6px; border-radius: 50%; background: var(--orange); }
.technology-section { background: var(--soft); }
.execution-workbench { display: grid; grid-template-columns: 1fr 1.5fr; background: var(--paper); border: 1px solid var(--line); }
.execution-steps { display: flex; flex-direction: column; border-right: 1px solid var(--line); }
.execution-steps button { flex: 1; display: flex; gap: 22px; align-items: center; padding: 30px; text-align: left; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--muted); transition: background .2s; }
.execution-steps button:last-child { border-bottom: 0; }
.execution-steps button[aria-selected=true] { background: var(--ink); color: var(--white); }
.execution-steps button > span { font: .875rem var(--mono); }
.execution-steps strong { font-size: 1.3rem; display: block; }
.execution-steps small { font-size: .875rem; display: block; margin-top: 4px; }
.execution-panel { padding: 36px 42px; }
.execution-panel > p { font-size: .9375rem; color: var(--muted); margin-top: 14px; max-width: 55ch; }
.execution-panel .diagram-caption { color: var(--muted); }
.layer-ledger { padding-bottom: 28px; }
.ledger-cap { border-bottom: 1.5px solid var(--ink); font: .6875rem var(--mono); text-align: right; padding-bottom: 6px; margin-bottom: 14px; }
.ledger-blocks { display: grid; grid-template-columns: repeat(12,minmax(0,1fr)); gap: 5px; height: 65px; }
.ledger-blocks i { background: var(--soft); border: 1px solid var(--line); transition: background .4s,transform .4s; }
.ledger-blocks i:nth-child(n+9) { background: var(--ink); }
.ledger-labels { display: flex; justify-content: space-between; font-size: .6875rem; color: var(--muted); padding-top: 8px; }
[data-step="1"] .ledger-blocks i:nth-child(-n+6), [data-step="2"] .ledger-blocks i:nth-child(-n+6) { background: var(--orange); border-color: var(--orange); }
[data-step="2"] .ledger-blocks i:nth-child(7), [data-step="2"] .ledger-blocks i:nth-child(8) { animation: layer-lift 2s var(--ease) infinite; background: var(--orange); }
.proof-section { padding-bottom: 85px; }
.benchmark-methodology { border-block: 1px solid var(--line); padding: 16px 0; font-size: .875rem; }
summary { cursor: pointer; font-weight: 650; min-height: 28px; }
.methodology-content { padding-top: 20px; color: var(--muted); max-width: 75ch; }
.benchmark-card { border-bottom: 1px solid var(--line); padding: 20px 0 28px; }
.benchmark-status { font: .6875rem var(--mono); color: var(--green); }
.benchmark-model { font-size: .875rem; margin-top: 12px; }
.benchmark-number { font-size: 2.7rem; font-weight: 700; letter-spacing: -.04em; }
.benchmark-number small { font-size: .8125rem; font-weight: 500; letter-spacing: normal; color: var(--muted); }
.throughput-proof { background: var(--dark); color: var(--paper); padding: 38px 40px; border-radius: var(--radius); margin-top: 45px; }
.throughput-heading h3 { font-size: 1.65rem; }
.chart-legend { display: flex; gap: 22px; margin-block: 22px; font-size: .8125rem; }
.chart-legend span::before { content: ''; display: inline-block; width: 9px; height: 9px; margin-right: 8px; background: var(--dark-muted); }
.chart-legend .legend-inferno::before { background: var(--orange); }
.chart-group { display: grid; grid-template-columns: 270px minmax(0,1fr); gap: 40px; padding: 22px 0; border-top: 1px solid var(--muted); }
.chart-label strong { display: block; font-size: .9375rem; }
.chart-label span { display: block; font: .6875rem/1.5 var(--mono); color: var(--dark-muted); margin-top: 5px; }
.chart-label em { display: block; font-size: .75rem; font-style: normal; color: var(--dark-muted); margin-top: 5px; }
.chart-pair { display: grid; gap: 9px; }
.chart-track { display: flex; align-items: center; gap: 14px; min-height: 28px; }
.series-name { width: 62px; flex: none; font-size: .6875rem; color: var(--dark-muted); }
.chart-bar { width: var(--width); min-width: 55px; max-width: calc(100% - 80px); height: 27px; background: var(--orange); display: flex; align-items: center; padding-inline: 8px; transform-origin: left; }
.chart-bar span { color: var(--stage-ink); font: 650 .75rem var(--mono); }
.chart-bar.control { background: var(--dark-muted); }
.chart-oom { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: .75rem; color: var(--dark-muted); }
.chart-oom b { font-weight: 500; border: 1px solid var(--muted); padding: 3px 8px; }
.chart-note { font-size: .8125rem; color: var(--dark-muted); margin-top: 22px; max-width: 85ch; }
.usecase-section { padding-top: 0; padding-bottom: 70px; }
.category-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; font-size: .75rem; font-weight: 700; padding-block: 26px; border-block: 1px solid var(--line); }
.calculator-section { background: var(--soft); }
.calculator-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 30px; margin-bottom: 35px; }
.calculator-header p { color: var(--muted); max-width: 640px; margin-top: 20px; }
.calc-badge { font-size: .75rem; white-space: nowrap; padding-top: 10px; color: var(--muted); }
.calc-tabs { display: flex; gap: 24px; border-bottom: 1px solid var(--line); }
.calc-tab { background: transparent; color: var(--muted); border: 0; border-bottom: 3px solid transparent; padding: 14px 4px; font-size: .9375rem; font-weight: 700; }
.calc-tab.active { border-color: var(--orange-dark); color: var(--ink); }
.calc-panel { display: grid; grid-template-columns: 1fr 1.15fr; gap: 0; background: var(--paper); margin-top: 24px; border: 1px solid var(--line); border-radius: var(--radius); overflow: clip; }
.calc-form { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 23px 20px; padding: 32px; align-content: start; }
label { display: flex; flex-direction: column; gap: 8px; font-size: .8125rem; font-weight: 650; line-height: 1.5; }
input,select,textarea { width: 100%; min-width: 0; background: var(--white); color: var(--ink); border: 1px solid var(--line); border-radius: 3px; padding: 12px; font-size: .9375rem; min-height: 48px; }
input:hover,select:hover,textarea:hover { border-color: var(--muted); }
input[aria-invalid=true] { border-color: var(--error); }
input[readonly] { background: var(--soft); }
.calc-result { border-left: 1px solid var(--line); padding: 32px; }
.result-topline { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 22px; }
.verdict-pill { display: inline-block; border-radius: 3px; padding: 5px 9px; background: var(--green-soft); color: var(--green); font: 600 .6875rem var(--mono); }
.verdict-pill.negative { background: var(--error-soft); color: var(--error); }
.result-topline small { font-size: .6875rem; color: var(--muted); }
.calc-result h3 { font-size: 1.6rem; line-height: 1.2; }
.calc-result > p { color: var(--muted); font-size: .875rem; margin-top: 16px; }
.result-metrics { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); margin-block: 24px; gap: 22px; }
.result-metrics > div { border-top: 1px solid var(--line); padding-top: 12px; min-width: 0; }
.result-metrics span { display: block; font-size: .75rem; color: var(--muted); }
.result-metrics strong { display: block; font-size: 1.15rem; line-height: 1.5; margin-top: 6px; font-weight: 750; overflow-wrap: anywhere; }
.result-warning { color: var(--muted); font-size: .75rem; line-height: 1.6; }
.result-warning.invalid { color: var(--error); }
.pricing-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); }
.price-card { display: flex; flex-direction: column; padding: 32px; border: 1px solid var(--line); margin-left: -1px; position: relative; }
.price-card.featured { background: var(--ink); color: var(--paper); }
.price-label { font-size: .6875rem; letter-spacing: .06em; margin-bottom: 26px; }
.price-card h3 { font-size: 1.45rem; }
.price { font-size: 2.6rem; font-weight: 700; letter-spacing: -.03em; margin: 22px 0; }
.price small { font-size: .875rem; margin-left: 5px; font-weight: 500; letter-spacing: normal; }
.price-card > p:not(.price-label), .price-card li { font-size: .875rem; color: var(--muted); }
.price-card.featured > p:not(.price-label), .price-card.featured li { color: var(--dark-muted); }
.price-card ul { list-style: none; padding: 0; margin: 16px 0 32px; flex: 1; }
.price-card li { padding: 8px 0; border-bottom: 1px solid var(--line); }
.price-card.featured li { border-color: var(--muted); }
.price-card.featured .button { background: var(--orange); color: var(--stage-ink); }
.popular { position: absolute; right: 20px; top: 30px; color: var(--orange); font-size: .625rem; font-weight: 750; }
.full { width: 100%; }
.faq-section { padding-top: 0; }
.faq-section .split-heading { grid-template-columns: 1fr; }
.faq-section h2 { max-width: 700px; }
.faq-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 48px; }
.faq-item { border-top: 1px solid var(--line); padding: 22px 0; }
.faq-item summary { font-size: .9375rem; }
.faq-item p { color: var(--muted); font-size: .875rem; margin-top: 16px; padding-right: 20px; }
.closing-cta { background: var(--orange); padding: 70px 0; }
.closing-cta .container { display: flex; justify-content: space-between; align-items: center; gap: 40px; }
.closing-cta h2 { max-width: 700px; }
.closing-cta p { margin-top: 18px; margin-bottom: 0; }
.site-footer { background: var(--ink); color: var(--paper); padding: 65px 0 25px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-grid > div { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; font-size: .8125rem; }
.footer-grid > div > strong { margin-bottom: 8px; font-weight: 650; }
.footer-grid p { color: var(--dark-muted); margin-top: 12px; max-width: 230px; }
.footer-grid a:not(.brand), .footer-grid span, .footer-link { color: var(--dark-muted); }
.footer-link { border: 0; background: transparent; padding: 0; font-size: .8125rem; }
.footer-grid a:hover,.footer-link:hover { color: var(--white); }
.footer-bottom { margin-top: 55px; padding-top: 22px; border-top: 1px solid var(--muted); display: flex; justify-content: space-between; gap: 24px; font-size: .6875rem; color: var(--dark-muted); }
.pilot-modal { border: 0; border-radius: var(--radius); padding: 0; color: var(--ink); background: var(--paper); max-width: 700px; width: calc(100% - 32px); max-height: calc(100dvh - 48px); box-shadow: 0 24px 70px var(--shadow); }
.pilot-modal::backdrop { background: var(--overlay); }
.modal-card { padding: 40px; position: relative; }
.modal-card h2 { font-size: 2.3rem; padding-right: 20px; }
.modal-card > p { color: var(--muted); font-size: .875rem; margin-top: 18px; }
.modal-close { position: absolute; right: 12px; top: 8px; background: transparent; border: 0; font-size: 1.8rem; min-width: 44px; min-height: 44px; color: var(--ink); }
.modal-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; margin: 24px 0; }
.optional { color: var(--muted); font-weight: 400; }
.modal-card .button { margin-top: 24px; }
.modal-card .modal-privacy-note { font-size: .6875rem; }
.modal-privacy-note a { text-decoration: underline; }
.main-content h1 { font-size: 3rem; margin-bottom: 30px; }
.main-content h3 { margin-bottom: 14px; }
.kicker { display: none; }
@keyframes data-flow { 0% { left: 0; opacity: 0; } 15%,80% { opacity: 1; } 100% { left: 95%; opacity: 0; } }
@keyframes layer-lift { 0%,65%,100% { transform: translateY(0); } 25% { transform: translateY(-10px); } }
@keyframes token-write { 0%,10% { transform: scaleX(.25); } 55%,100% { transform: scaleX(1); } }
@media (min-width: 1500px) { .hero-content { padding-top: 95px; padding-bottom: 80px; } .memory-machine { min-height: 330px; } }
@media (max-width: 1100px) {
  .container { width: calc(100% - 64px); } .nav-links { gap: 18px; } .hero-content { gap: 32px; grid-template-columns: 1.5fr 1fr; }
  .hero-title-main { font-size: 4.4rem; } .hero-subtitle { font-size: 1.15rem; } .hero-actions { gap: 16px; }
  .stage-bottom .diagram-caption { width: 100%; } .memory-machine { gap: 12px; } .memory-boundary { padding: 18px; } .boundary-heading strong { font-size: 3rem; }
  .split-heading { gap: 40px; } .chart-group { grid-template-columns: 230px minmax(0,1fr); gap: 24px; }
  .calc-form,.calc-result { padding: 24px; } .price-card { padding: 24px; } .popular { position: static; margin-bottom: 8px; }
}
@media (max-width: 850px) {
  .nav-links { gap: 20px; } .nav-links > a[href="#pricing"] { display: none; } .nav-links .button { font-size: .75rem; gap: 12px; }
  .hero-content { grid-template-columns: 1fr; padding-block: 48px; } .hero-title-main { font-size: 5rem; } .hero-intro { max-width: 620px; } .hero-subtitle { font-size: 1.25rem; }
  .memory-machine { grid-template-columns: 1fr .3fr 2fr; } .execution-result,.output-lane { display: none; } .stage-bottom p { min-width: 230px; }
  .hero-proof-strip { font-size: .75rem; justify-content: flex-start; gap: 12px 30px; } .section { padding: 72px 0; }
  .split-heading { grid-template-columns: 1fr; gap: 24px; } .proof-grid { gap: 24px; } .execution-workbench { grid-template-columns: 1fr 1.3fr; } .execution-steps button { padding: 24px 20px; gap: 16px; } .execution-panel { padding: 28px; }
  .calc-panel { grid-template-columns: 1fr; } .calc-result { border-left: 0; border-top: 1px solid var(--line); } .pricing-grid { grid-template-columns: 1fr; gap: 20px; } .price-card { margin: 0; padding: 32px; } .price-card li { display: inline-block; width: 100%; } .price-card .button { max-width: 300px; } .popular { position: absolute; right: 30px; }
  .calc-badge { display: none; } .chart-group { grid-template-columns: 190px minmax(0,1fr); gap: 20px; } .throughput-proof { padding: 28px; } .benchmark-number { font-size: 2rem; } .benchmark-number small { display: block; } .footer-grid { grid-template-columns: 2fr 1fr 1fr; } .footer-grid > div:last-child { display: none; } .closing-cta .container { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 640px) {
  .container { width: calc(100% - 40px); } .header-container { min-height: 72px; } .brand { font-size: 1.4rem; } .brand-icon-svg { width: 24px; height: 24px; } .menu-button { display: block; }
  .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; padding: 24px 20px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 18px 28px var(--shadow); }
  .nav-links.open { display: flex; flex-direction: column; align-items: stretch; gap: 0; } .nav-links a { padding: 13px 0; } .nav-links > a[href="#pricing"] { display: block; } .nav-links .button { margin-top: 16px; font-size: .875rem; }
  .hero-content { padding-top: 42px; padding-bottom: 36px; gap: 25px; } .hero-title-main { font-size: clamp(2.6rem,9.3vw,3.9rem); } .hero-subtitle { font-size: 1.125rem; } .hero-intro > p:not(.hero-subtitle) { font-size: .9375rem; }
  .hero-actions { margin-top: 22px; } .hero-actions .button { gap: 18px; } .stage-heading { font-size: .75rem; align-items: flex-start; } .stage-heading > span { max-width: 160px; } .motion-toggle { font-size: .6875rem; min-height: 32px; padding-top: 0; }
  .memory-stage { padding-top: 20px; } .memory-machine { grid-template-columns: 50px 18px minmax(0,1fr); gap: 8px; min-height: 220px; padding-block: 26px; } .layer-source .diagram-label { font-size: .5625rem; line-height: 1.4; display: block; } .diagram-note { display: none; } .source-stack { height: 65px; gap: 3px; margin-top: 12px; } .source-stack i:nth-child(n+5) { display: none; }
  .memory-boundary { padding: 15px; } .boundary-heading { gap: 12px; } .boundary-heading strong { font-size: 2.6rem; } .boundary-heading strong small { font-size: 1rem; } .boundary-heading > span { font-size: .5rem; } .working-set { margin-top: 20px; height: 40px; } .working-set span { font-size: .5rem; } .budget-rule { font-size: .5rem; }
  .stage-bottom { gap: 10px; padding-top: 16px; } .mode-switch { width: 100%; } .mode-switch button { flex: 1; font-size: .6875rem; padding-inline: 8px; } .stage-bottom p { flex-basis: 100%; font-size: .75rem; } .stage-bottom .diagram-caption { font-size: .625rem; }
  .hero-proof-strip { gap: 8px 16px; padding-block: 18px; font-size: .6875rem; } .hero-proof-strip span:first-child { width: 100%; } .section { padding: 60px 0; } h2 { font-size: 2.2rem; } .split-heading { margin-bottom: 32px; gap: 20px; } .split-heading > p { font-size: .9375rem; }
  .proof-grid { grid-template-columns: 1fr; gap: 22px; } .evidence-stat-card { display: grid; grid-template-columns: 32px 1fr; gap: 0 20px; padding-top: 22px; } .evidence-stat-card strong { margin: 0 0 9px; } .evidence-stat-card p { grid-column: 2; margin-bottom: 0; }
  .execution-workbench { grid-template-columns: 1fr; } .execution-steps { flex-direction: row; border-right: 0; border-bottom: 1px solid var(--line); } .execution-steps button { padding: 17px 8px; justify-content: center; border-bottom: 0; gap: 8px; } .execution-steps button > span { font-size: .6875rem; } .execution-steps strong { font-size: .8125rem; } .execution-steps small { display: none; } .execution-panel { padding: 25px 20px; } .execution-panel h3 { font-size: 1.35rem; } .ledger-blocks { gap: 3px; height: 50px; }
  .proof-section .proof-grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; } .benchmark-card { padding: 10px 0 20px; } .benchmark-model { font-size: .6875rem; } .benchmark-number { font-size: 1.75rem; } .benchmark-number small { font-size: .5625rem; } .benchmark-status { font-size: .5625rem; }
  .throughput-proof { padding: 25px 20px; margin-top: 30px; } .throughput-heading h3 { font-size: 1.4rem; } .chart-group { grid-template-columns: 1fr; gap: 18px; } .chart-label { display: grid; grid-template-columns: 1fr auto; gap: 0 8px; } .chart-label span { grid-row: 2; } .chart-label em { margin: 0; grid-column: 2; grid-row: 1; } .chart-label strong { font-size: .8125rem; } .chart-note { font-size: .75rem; }
  .usecase-section { padding-top: 0; } .category-row { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; font-size: .625rem; }
  .calculator-header { margin-bottom: 20px; } .calculator-header p { font-size: .9375rem; } .calc-form { gap: 20px 12px; padding: 20px; } label { font-size: .75rem; } input,select,textarea { font-size: 16px; padding: 10px; } .calc-result { padding: 24px 20px; } .calc-result h3 { font-size: 1.4rem; } .result-metrics { gap: 18px 12px; } .result-metrics strong { font-size: 1rem; }
  .price-card { padding: 28px; } .price { font-size: 2.4rem; } .price-card .button { max-width: none; } .faq-grid { grid-template-columns: 1fr; } .faq-section { padding-top: 0; } .faq-item summary { font-size: .875rem; } .closing-cta { padding: 50px 0; } .closing-cta h2 { font-size: 2.1rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 35px; } .footer-grid > div:first-child { grid-column: 1/-1; } .footer-grid p { max-width: none; margin-bottom: 0; } .footer-bottom { flex-direction: column; gap: 6px; margin-top: 40px; } .site-footer { padding-top: 45px; }
  .modal-card { padding: 28px 20px; } .modal-card h2 { font-size: 1.8rem; } .modal-grid { grid-template-columns: 1fr; } .pilot-modal { max-height: calc(100dvh - 24px); } .main-content h1 { font-size: 2.3rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; } }