:root {
  color-scheme: dark;
  --ink: #f2f2f2;
  --dim: #b3b3b3;
  --muted: #929292;
  --accent: #4fc3c7;
  --mint: #78e8b5;
  --rule: #2a2a2a;
  --mono: 'IBM Plex Mono', monospace;
  --cond: 'IBM Plex Sans Condensed', 'Arial Narrow', sans-serif;
}
* { box-sizing: border-box; }
html { background: #000; scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; color: var(--ink); font: 16px/1.65 'IBM Plex Sans', sans-serif; }
h1, h2, h3, h4, p { margin: 0; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 4px;
}
::selection { background: #4fc3c755; color: #fff; }
.skip-link { position: absolute; top: 8px; left: 8px; z-index: 20; padding: 10px 18px; background: #000; border: 1px solid var(--accent); transform: translateY(-160%); }
.skip-link:focus { transform: none; }
#csm-value { max-width: 1440px; margin: 0 auto; }
.icon { width: 16px; height: 16px; flex-shrink: 0; }
.principle-tape { display: flex; justify-content: space-around; gap: 12px; padding: 8px 24px; border-bottom: 1px solid #aaa; background: #050505; color: var(--dim); font: 11px/1.5 var(--mono); }
.principle-tape b { font-weight: 400; color: #3fbe86; margin-left: 12px; }
.mast { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 24px 40px; }
.brand { display: inline-flex; gap: 14px; align-items: center; flex-shrink: 0; }
.monogram { position: relative; font: italic 700 42px/1 var(--cond); letter-spacing: -4px; padding: 0 12px 2px 0; }
.brand-cut { position: absolute; right: 0; bottom: 5px; width: 5px; height: 30px; background: var(--accent); transform: skew(-14deg); transition: transform .2s ease, background .2s ease; }
.brand:hover .brand-cut { transform: skew(-14deg) translateX(3px); background: #8fe0e3; }
.brand-full { font: 600 12px/1.2 var(--cond); letter-spacing: 1.1px; }
nav { display: flex; align-items: center; gap: 28px; font-size: 13px; color: var(--dim); }
nav a { padding: 10px 0; }
nav a:hover { color: #8fe0e3; }
.nav-contact { border: 1px solid #3a3a3a; padding: 10px 14px; color: var(--ink); display: inline-flex; align-items: center; gap: 14px; }
.nav-contact:hover { border-color: var(--accent); }
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding: 26px 40px 42px; }
.eyebrow { color: var(--accent); font: 11px/1.6 var(--mono); letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 20px; }
h1 { font: 700 clamp(48px, 5vw, 72px)/.97 var(--cond); letter-spacing: -2px; }
h1 > span { color: #777; }
.hero-offer { font-size: 19px; line-height: 1.45; margin-top: 22px; max-width: 34ch; }
.hero-context { color: var(--dim); font-size: 14px; margin-top: 12px; max-width: 54ch; }
.hero-proof { border-top: 1px solid var(--rule); padding-top: 16px; margin-top: 20px; font: 12px/1.7 var(--mono); color: var(--dim); max-width: 52ch; }
.hero-proof strong { font-size: 20px; color: var(--ink); font-weight: 500; }
.hero-actions { display: flex; align-items: flex-start; flex-direction: column; gap: 16px; }
.hero-secondary { font: 12px/1.5 var(--mono); color: var(--accent); padding-block: 5px; }
.hero-secondary span { margin-left: 10px; }
.hero-right { display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.scene-topline { display: flex; justify-content: space-between; align-items: center; gap: 12px; color: var(--accent); font: 11px/1.5 var(--mono); }
.motion-button, .text-button { border: 0; background: transparent; color: var(--dim); font: 11px/1.5 var(--mono); padding: 9px 0; white-space: nowrap; }
.motion-button:hover, .text-button:hover { color: var(--accent); }
.motion-button:disabled { cursor: default; color: var(--muted); }
.tool-scene { position: relative; height: 260px; touch-action: pan-y; cursor: grab; }
.tool-scene.is-dragging { cursor: grabbing; }
.tool-canvas { display: block; width: 100%; height: 100%; touch-action: pan-y; }
.scene-node { position: absolute; transform: translate(-50%, -50%); border: 0; background: transparent; display: flex; align-items: center; gap: 7px; padding: 8px; min-height: 44px; white-space: nowrap; }
.node-light { width: 7px; height: 7px; flex-shrink: 0; background: #8fe0e3; border-radius: 50%; box-shadow: 0 0 8px #4fc3c7, 0 0 18px #4fc3c755; }
.node-label { font: 11px/1.2 var(--mono); border: 1px solid #3a3a3a; background: #000e; color: var(--dim); padding: 6px; transition: border-color .18s ease, color .18s ease; }
.scene-node[aria-pressed='true'] .node-label, .scene-node:hover .node-label { border-color: var(--accent); color: #8fe0e3; }
.scene-node[aria-pressed='true'] .node-light { background: #e6fff2; box-shadow: 0 0 10px #88ffd4, 0 0 24px #3fbe8699; }
.scene-instructions { display: flex; justify-content: space-between; align-items: center; gap: 16px; font: 11px/1.5 var(--mono); color: var(--muted); }
.tool-receipt { border-left: 2px solid var(--accent); background: #0a0a0a; padding: 14px 18px; margin-top: 10px; min-height: 146px; }
.receipt-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; color: var(--accent); font: 11px/1.5 var(--mono); }
.receipt-top > span:last-child { color: var(--muted); }
#hero-tool-question { font: 600 26px/1.2 var(--cond); margin: 10px 0 7px; }
#hero-tool-detail { font-size: 13px; color: var(--dim); }
#hero-tool-link { display: inline-flex; align-items: center; gap: 12px; color: var(--accent); font: 11px/1.5 var(--mono); padding-top: 10px; }
.primary-link { display: inline-flex; align-items: center; justify-content: center; gap: 22px; background: #0a0a0a; color: var(--ink); border: 1px solid #3a3a3a; box-shadow: 3px 3px 0 var(--accent); padding: 13px 17px; min-height: 46px; font: 12px/1.5 var(--mono); margin-top: 20px; transition: background .2s ease, box-shadow .2s ease; }
.primary-link:hover { background: #112122; box-shadow: 5px 5px 0 var(--accent); }
.grid-surface { background-image: linear-gradient(#0d0d0d 1px, transparent 1px), linear-gradient(90deg, #0d0d0d 1px, transparent 1px); background-size: 32px 32px; }
h2 { font: 700 clamp(34px, 4vw, 52px)/1.06 var(--cond); letter-spacing: -.8px; }
.small-label { color: var(--accent); font: 11px/1.5 var(--mono); text-transform: uppercase; letter-spacing: 1px; }
.ds-section { padding: 48px 52px; border-top: 1px solid #aaa; }
.ds-heading { display: flex; justify-content: space-between; align-items: end; gap: 28px; }
.outline-link { display: inline-flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--accent); padding: 12px 0; white-space: nowrap; font: 12px/1.5 var(--mono); }
.outline-link:hover { color: #8fe0e3; }
.ds-intro { max-width: 720px; font-size: 15px; color: var(--dim); margin-top: 22px; }
.ds-board { border: 1px solid #ddd; background: #0a0a0a; box-shadow: 6px 6px 0 var(--accent); margin: 32px 6px 0 0; }
.board-head { display: flex; justify-content: space-between; align-items: center; gap: 22px; border-bottom: 1px solid #888; padding: 18px 24px; }
.ds-wordmark { font: 600 28px/1.2 var(--cond); }
.ds-wordmark > span { color: var(--mint); }
.board-head > span:last-child { font: 11px/1.5 var(--mono); color: var(--accent); }
.board-body { display: grid; grid-template-columns: 1.12fr 1fr; }
.tool-browser { min-width: 0; border-right: 1px solid var(--rule); }
.tool-tabs { display: flex; flex-wrap: wrap; border-bottom: 1px solid var(--rule); background: #000; }
.tool-tabs button { border: 0; border-bottom: 2px solid transparent; padding: 14px; min-height: 44px; color: var(--dim); background: none; font: 12px/1.4 var(--mono); transition: background .18s ease, color .18s ease; }
.tool-tabs button[aria-selected='true'] { color: var(--accent); background: #4fc3c71a; border-bottom-color: var(--accent); }
.tool-tabs button:hover { color: var(--ink); background: #181818; }
.tool-panel { padding: 26px 24px; min-height: 460px; }
.tool-panel h3 { font: 600 36px/1.1 var(--cond); letter-spacing: -.6px; margin: 14px 0 18px; }
#tool-description { font-size: 14px; color: var(--dim); min-height: 68px; }
.tool-example { margin: 22px 0; border-top: 1px solid var(--rule); }
.tool-example > div { display: grid; grid-template-columns: 7px 100px 1fr; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--rule); font-size: 12px; }
.tool-example strong { font-weight: 500; }
.tool-example > div > span:last-child { color: var(--dim); }
.example-dot { width: 5px; height: 5px; background: #3fbe86; box-shadow: 0 0 8px #3fbe8666; border-radius: 50%; }
.tool-source { display: grid; grid-template-columns: 38px 1fr; gap: 12px; font: 11px/1.7 var(--mono); margin: 18px 0 22px; }
.tool-source > span { color: var(--accent); }
.tool-source p { color: var(--muted); }
.tool-link { display: inline-flex; align-items: center; gap: 16px; font: 12px/1.5 var(--mono); color: var(--accent); }
.evidence { padding: 26px 24px; }
.evidence-header { display: flex; align-items: center; gap: 10px; font: 11px/1.6 var(--mono); color: var(--accent); margin-bottom: 26px; }
.evidence article { display: flex; gap: 14px; margin-top: 26px; }
.evidence-number { color: var(--accent); font: 12px/1.5 var(--mono); padding-top: 2px; }
.evidence h4 { font-size: 15px; font-weight: 500; line-height: 1.4; margin-bottom: 9px; }
.evidence p { font-size: 14px; color: var(--dim); }
.evidence a { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); font: 11px/1.5 var(--mono); margin-top: 12px; }
.board-foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; border-top: 1px solid var(--rule); padding: 14px 24px; font: 11px/1.6 var(--mono); color: var(--dim); }
.secondary-tools { color: var(--muted); font-size: 13px; margin-top: 24px; }
.secondary-tools a, .fallback-links a { text-decoration: underline; text-underline-offset: 3px; }
.secondary-tools a:hover { color: var(--accent); }
.expansion { padding: 28px 52px; border-top: 1px solid var(--rule); display: flex; align-items: baseline; gap: 32px; }
.expansion .small-label { flex-shrink: 0; }
.expansion p:not(.small-label) { color: var(--dim); font-size: 13px; max-width: 76ch; }
.contact { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: start; padding: 60px 52px; border-top: 1px solid #aaa; }
.contact-copy > p:not(.eyebrow) { font-size: 15px; color: var(--dim); max-width: 500px; margin-top: 22px; }
.direct-contact { display: flex; flex-direction: column; gap: 12px; margin-top: 30px; }
.direct-contact a { width: fit-content; font: 13px/1.5 var(--mono); color: var(--accent); overflow-wrap: anywhere; }
.buyer-form { border: 1px solid #3a3a3a; background: #0a0a0a; padding: 26px; }
.buyer-form h3 { font: 600 28px/1.2 var(--cond); }
.form-intro { color: var(--dim); font-size: 14px; margin-top: 9px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-row > div { min-width: 0; }
.buyer-form label { display: block; font-size: 13px; margin: 18px 0 8px; }
.buyer-form label span { color: var(--muted); font-size: 11px; }
.buyer-form input:not([type='hidden']), .buyer-form textarea { display: block; width: 100%; border: 1px solid #606060; border-radius: 0; background: #000; color: var(--ink); padding: 10px 12px; font-size: 16px; }
.buyer-form textarea { resize: vertical; min-height: 100px; }
.buyer-form textarea::placeholder { color: #8a8a8a; }
.form-privacy { color: var(--dim); font-size: 12px; margin-top: 16px; }
.form-privacy a { color: var(--accent); text-decoration: underline; }
footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 24px; border-top: 1px solid var(--rule); padding: 26px 40px; }
.footer-meta { display: flex; flex-direction: column; gap: 6px; color: var(--muted); font-size: 12px; }
.footer-links { display: flex; gap: 18px; color: var(--dim); font-size: 12px; }
.footer-links a:hover { color: var(--accent); }
footer .monogram { font-size: 32px; }
footer .brand-cut { height: 23px; }
footer .brand-full { font-size: 10px; }
.no-script-tools { padding: 24px; border: 1px solid var(--rule); background: #0a0a0a; }
.no-script-tools p { color: var(--accent); margin-bottom: 14px; }
.no-script-tools a { display: block; padding: 8px 0; text-decoration: underline; }
.fallback-links { padding: 0 24px 24px; color: var(--dim); font-size: 14px; }
@media (max-width: 1050px) {
  .mast, .hero { padding-inline: 28px; }
  nav { gap: 20px; }
  .hero { grid-template-columns: 1fr 1fr; gap: 24px; }
  h1 { font-size: clamp(46px, 5.5vw, 65px); }
  .node-label { font-size: 10px; }
  .scene-node { gap: 5px; padding: 6px; }
  .scene-instructions { font-size: 10px; gap: 10px; }
  .ds-section, .contact { padding-inline: 36px; }
  .contact { gap: 30px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
}
@media (max-width: 760px) {
  .principle-tape { flex-wrap: wrap; gap: 6px 14px; padding-inline: 16px; }
  .mast { padding: 16px 24px; gap: 14px; }
  .mast .brand-full { display: none; }
  .mast .monogram { font-size: 35px; }
  .mast .brand-cut { height: 26px; }
  .expansion { flex-direction: column; gap: 10px; padding: 24px; }
  nav > a:not(.nav-contact) { display: none; }
  .nav-contact { font-size: 11px; padding: 10px; gap: 8px; }
  .hero { grid-template-columns: 1fr; padding: 24px; gap: 34px; }
  h1 { font-size: clamp(42px, 8vw, 60px); }
  .tool-scene { height: 280px; }
  .scene-topline { font-size: 10px; }
  .tool-receipt { min-height: 158px; }
  .ds-section, .contact { padding: 40px 24px; }
  h2 { font-size: clamp(32px, 5.5vw, 42px); }
  .ds-heading { display: block; }
  .outline-link { margin-top: 16px; }
  .board-head { padding: 18px; align-items: start; }
  .board-head > span:last-child { max-width: 110px; text-align: right; }
  .board-body { grid-template-columns: 1fr; }
  .tool-browser { border-right: 0; }
  .tool-tabs button { padding: 13px 10px; font-size: 11px; }
  .tool-panel { padding: 24px 18px; min-height: 475px; }
  .tool-panel h3 { font-size: 34px; }
  .tool-example > div { grid-template-columns: 5px 92px 1fr; gap: 8px; }
  .evidence { border-top: 1px solid var(--rule); padding: 26px 18px; }
  .board-foot { padding: 15px 18px; }
  .contact { grid-template-columns: 1fr; gap: 28px; }
  .buyer-form { padding: 22px; }
  .form-row { grid-template-columns: 1fr 1fr; gap: 16px; }
  footer { padding: 26px 24px; }
}
@media (max-width: 420px) {
  .brand-full { font-size: 10px; }
  .brand { gap: 10px; }
  .monogram { font-size: 35px; }
  .brand-cut { height: 26px; }
  .scene-node { flex-direction: column-reverse; gap: 8px; }
  .node-label { font-size: 10px; padding: 5px; }
  .scene-instructions { align-items: start; }
  .scene-instructions > span { max-width: 185px; padding-top: 8px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .buyer-form { padding: 18px; }
}
@media (max-width: 350px) {
  .hero-offer { font-size: 18px; margin-top: 16px; }
  .hero-context { font-size: 13px; }
  .hero-proof { margin-top: 16px; }
  .mast { padding-inline: 18px; }
  .brand-full { display: none; }
  .hero, .ds-section, .contact { padding-inline: 20px; }
  .tool-tabs button { font-size: 10px; padding-inline: 8px; }
  .tool-example > div { grid-template-columns: 5px 80px 1fr; }
}
@media (pointer: coarse) { .motion-button, .text-button, .direct-contact a, .footer-links a { min-height: 44px; } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}