:root {
  --attention-cyan: #55e9ff;
  --attention-blue: #6d9dff;
  --attention-deep: #07141d;
  --attention-panel: #0c202b;
  --attention-line: rgba(85, 233, 255, 0.28);
}

.attention-page { --attention-ink: var(--attention-cyan); }
.attention-page .lesson-progress-track span { background: var(--attention-cyan); width: 57.1429%; }
.attention-page .lesson-hero { background-color: var(--attention-deep); background-image: linear-gradient(rgba(238,242,234,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(238,242,234,.055) 1px, transparent 1px), radial-gradient(circle at 76% 44%, rgba(85,233,255,.2), transparent 34%); }
.attention-page .lesson-hero::before { background: repeating-linear-gradient(135deg, var(--attention-cyan) 0 8px, transparent 8px 16px); }
.attention-page .lesson-hero h1 em, .attention-page .lesson-eyebrow, .attention-page .one-line-label { color: var(--attention-cyan); }
.attention-page .one-line { border-color: var(--attention-cyan); }
.attention-hero-art::before { border-color: rgba(85,233,255,.34); }
.attention-hero-art::after { border-color: rgba(109,157,255,.25); }
.attention-art-map { background: linear-gradient(130deg, rgba(85,233,255,.05), transparent 55%); }
.attention-hero-grid path { fill: none; stroke: rgba(85,233,255,.15); stroke-width: 1; }
.attention-hero-arcs path { fill: none; stroke: var(--attention-cyan); stroke-linecap: round; }
.attention-hero-arcs .faint { opacity: .22; stroke-width: 2; }
.attention-hero-arcs .medium { opacity: .55; stroke-width: 4; }
.attention-hero-arcs .bright { opacity: .98; stroke-width: 8; }
.attention-hero-nodes circle:first-child { fill: var(--attention-cyan); }
.attention-hero-nodes circle:not(:first-child) { fill: var(--attention-blue); }
.attention-hero-labels text { fill: rgba(238,242,234,.78); font: 12px 'DM Mono', monospace; }

.attention-section .walkthrough-intro h2 em, .attention-try-section h2 em { color: var(--attention-cyan); }
.attention-demo, .focus-demo, .qkv-demo, .calculation-demo { background: var(--attention-deep); border-color: rgba(85,233,255,.24); color: var(--paper); }
.attention-demo .demo-topbar, .focus-demo .demo-topbar, .qkv-demo .demo-topbar, .calculation-demo .demo-topbar { border-color: rgba(85,233,255,.18); }
.attention-demo .demo-index, .focus-demo .demo-index, .qkv-demo .demo-index, .calculation-demo .demo-index { color: var(--attention-cyan); }
.attention-example-buttons, .attention-sentence-picker, .attention-sentence-label, .focus-controls, .qkv-job-picker { display: flex; align-items: center; gap: .7rem; }
.attention-sentence-picker { justify-content: space-between; padding: 1rem; border-bottom: 1px solid rgba(85,233,255,.15); }
.attention-sentence-picker > span, .attention-sentence-label span, .focus-kicker, .attention-panel-heading span, .qkv-footer, .calculation-source span, .calculation-result span, .try-kicker { color: rgba(238,242,234,.56); font: .52rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.attention-example-buttons { flex-wrap: wrap; justify-content: flex-end; }
.attention-example, .qkv-job, .toggle-button, .try-reveal { appearance: none; border: 1px solid rgba(85,233,255,.28); background: transparent; color: var(--paper); }
.attention-example { min-height: 40px; padding: .6rem .7rem; font: .55rem var(--mono); text-transform: uppercase; }
.attention-example:hover, .attention-example.is-selected, .attention-example:focus-visible { background: rgba(85,233,255,.12); border-color: var(--attention-cyan); color: var(--attention-cyan); }
.attention-sentence-wrap { padding: 1.15rem; }
.attention-sentence-label { justify-content: space-between; margin-bottom: .9rem; }
.attention-sentence-label output { color: var(--attention-cyan); font: .58rem var(--mono); text-transform: uppercase; }
.attention-sentence { display: flex; flex-wrap: wrap; gap: .45rem; }
.sentence-token { min-height: 44px; padding: .55rem .7rem; border: 1px solid rgba(238,242,234,.2); background: rgba(238,242,234,.035); color: var(--paper); font-family: var(--mono); font-size: .72rem; transition: background 180ms ease, border-color 180ms ease, color 180ms ease, opacity 180ms ease, transform 180ms ease; }
.sentence-token:hover, .sentence-token:focus-visible { border-color: var(--attention-cyan); color: var(--attention-cyan); }
.sentence-token.is-query { background: var(--attention-cyan); border-color: var(--attention-cyan); color: var(--attention-deep); transform: translateY(-2px); }
.sentence-token.is-hidden { opacity: .22; text-decoration: line-through; }
.attention-visual-grid, .qkv-layout { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(240px, .8fr); }
.attention-map-panel, .attention-inspector, .qkv-diagram, .qkv-inspector { min-width: 0; }
.attention-map-panel { border-top: 1px solid rgba(85,233,255,.15); padding: 1.15rem; }
.attention-inspector { border-left: 1px solid rgba(85,233,255,.18); padding: 1.15rem; }
.attention-panel-heading { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; }
.attention-panel-heading strong { color: var(--attention-cyan); font: .59rem var(--mono); text-transform: uppercase; }
.attention-map { margin-top: 1rem; position: relative; min-height: 250px; }
#attention-arcs { height: 154px; position: absolute; inset: 0 0 auto; width: 100%; pointer-events: none; }
.attention-arc { fill: none; stroke: var(--attention-cyan); stroke-linecap: round; transition: opacity 180ms ease, stroke-width 180ms ease; }
.attention-bars { display: grid; grid-template-columns: repeat(auto-fit, minmax(88px, 1fr)); gap: .55rem; padding-top: 166px; }
.attention-bar { background: rgba(238,242,234,.05); border: 1px solid rgba(238,242,234,.12); min-height: 72px; padding: .55rem; position: relative; }
.attention-bar.is-top { border-color: var(--attention-cyan); }
.attention-bar.is-hidden { opacity: .22; }
.attention-bar-name { display: block; color: rgba(238,242,234,.68); font: .56rem var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attention-bar-meter { background: rgba(85,233,255,.12); height: 6px; margin: .8rem 0 .45rem; }
.attention-bar-meter i { background: var(--attention-cyan); display: block; height: 100%; transition: width 220ms ease; }
.attention-bar-value { color: var(--attention-cyan); font: .7rem var(--mono); }
.attention-map-caption, .attention-inspector p, .qkv-inspector p, .focus-state-copy p, .focus-mask-note p, .calculation-controls p, .try-feedback { color: rgba(238,242,234,.66); font-size: .76rem; line-height: 1.65; }
.attention-map-caption { margin: 1rem 0 0; }
.inspector-kicker, .focus-kicker { color: var(--attention-cyan); display: block; font: .52rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.attention-inspector-query { align-items: end; display: flex; gap: .7rem; margin-top: 1.5rem; }
.attention-inspector-query span, .attention-inspector-query small, .attention-inspector-focus span, .attention-mix span { color: rgba(238,242,234,.5); display: block; font: .54rem var(--mono); text-transform: uppercase; }
.attention-inspector-query strong { color: var(--attention-cyan); font: 2.4rem var(--display); letter-spacing: -.08em; line-height: .85; }
.attention-inspector-query small { margin-bottom: .15rem; }
.attention-inspector-focus, .attention-mix { border-top: 1px solid rgba(85,233,255,.18); margin-top: 1.5rem; padding-top: 1rem; }
.attention-inspector-focus strong, .attention-mix strong { display: block; font: 1rem var(--display); margin: .45rem 0; }
.attention-mix strong { color: var(--attention-cyan); font-size: .9rem; }
.attention-mix small { color: rgba(238,242,234,.5); font: .55rem var(--mono); }
.attention-statusbar { align-items: center; border-top: 1px solid rgba(85,233,255,.15); color: rgba(238,242,234,.52); display: flex; font: .5rem var(--mono); justify-content: space-between; gap: 1rem; padding: .8rem 1.15rem; text-transform: uppercase; }
.attention-statusbar i { background: var(--attention-cyan); border-radius: 50%; display: inline-block; height: 6px; margin-right: .4rem; width: 6px; }

.focus-controls { border-bottom: 1px solid rgba(85,233,255,.18); justify-content: space-between; padding: 1.15rem; }
.focus-controls label { flex: 1; max-width: 430px; }
.focus-controls label > span, .calculation-controls label > span { color: rgba(238,242,234,.62); display: flex; font: .56rem var(--mono); justify-content: space-between; text-transform: uppercase; }
.focus-controls output, .calculation-controls output { color: var(--attention-cyan); }
input[type="range"] { accent-color: var(--attention-cyan); min-height: 28px; width: 100%; }
.mask-toggle { align-items: center; display: flex; gap: .7rem; }
.mask-toggle > span { color: rgba(238,242,234,.55); font: .52rem var(--mono); text-transform: uppercase; }
.toggle-button { align-items: center; display: flex; gap: .55rem; min-height: 42px; padding: .45rem .65rem; }
.toggle-button:hover, .toggle-button:focus-visible { border-color: var(--attention-cyan); }
.toggle-track { background: rgba(238,242,234,.15); border-radius: 2rem; height: 18px; padding: 3px; width: 34px; }
.toggle-track i { background: rgba(238,242,234,.65); border-radius: 50%; display: block; height: 12px; transition: transform 180ms ease; width: 12px; }
.toggle-button[aria-checked="true"] .toggle-track { background: rgba(85,233,255,.35); }.toggle-button[aria-checked="true"] .toggle-track i { background: var(--attention-cyan); transform: translateX(16px); }
.toggle-button strong { color: rgba(238,242,234,.72); font: .52rem var(--mono); text-transform: uppercase; }
.focus-state-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: rgba(85,233,255,.18); }
.focus-state-copy, .focus-mask-note { background: var(--attention-deep); padding: 1.15rem; }
.focus-state-copy strong, .focus-mask-note strong { display: block; font: 1.05rem var(--display); margin: .45rem 0; }
.focus-equation { border-left: 2px solid var(--attention-cyan); color: var(--attention-cyan); font: .58rem var(--mono); margin-top: 1rem; padding: .5rem .7rem; text-transform: uppercase; }
.focus-mini-bars { display: grid; gap: .55rem; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); padding: 1.15rem; }
.focus-mini-bar { background: rgba(238,242,234,.045); border: 1px solid rgba(238,242,234,.12); padding: .7rem; }.focus-mini-bar.is-hidden { opacity: .2; }.focus-mini-bar span { display: block; font: .57rem var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }.focus-mini-bar strong { color: var(--attention-cyan); display: block; font: 1.1rem var(--display); margin-top: .5rem; }.focus-mini-bar i { background: var(--attention-cyan); display: block; height: 5px; margin-top: .45rem; transition: width 220ms ease; }

.qkv-job-picker { border-bottom: 1px solid rgba(85,233,255,.18); padding: 1.15rem; }
.qkv-job { align-items: center; display: grid; gap: .1rem .65rem; grid-template-columns: 40px 1fr; min-height: 64px; padding: .55rem .7rem; text-align: left; }.qkv-job > span { color: var(--attention-cyan); font: 1.2rem var(--display); grid-row: span 2; }.qkv-job strong { font: .7rem var(--mono); text-transform: uppercase; }.qkv-job small { color: rgba(238,242,234,.54); font-size: .62rem; }.qkv-job.is-selected, .qkv-job:hover, .qkv-job:focus-visible { background: rgba(85,233,255,.12); border-color: var(--attention-cyan); }
.qkv-diagram { align-items: center; background: rgba(238,242,234,.025); display: grid; gap: .65rem; grid-template-columns: minmax(100px, .7fr) 75px minmax(110px, 1fr) 55px minmax(110px, 1fr); padding: 1.15rem; }.qkv-node { border: 1px solid rgba(238,242,234,.18); padding: .8rem .65rem; }.qkv-node span { color: var(--attention-cyan); display: block; font: 1rem var(--mono); }.qkv-node strong { display: block; font: .78rem var(--display); margin-top: .25rem; }.qkv-node small { color: rgba(238,242,234,.5); display: block; font-size: .58rem; line-height: 1.4; margin-top: .35rem; }.qkv-node.is-active, .qkv-query { border-color: var(--attention-cyan); box-shadow: inset 0 2px 0 var(--attention-cyan); }.qkv-arrow { color: rgba(238,242,234,.48); font: .5rem var(--mono); text-align: center; text-transform: uppercase; }.qkv-key-list, .qkv-value-list { display: grid; gap: .45rem; }.qkv-inspector { border-left: 1px solid rgba(85,233,255,.18); padding: 1.15rem; }.qkv-inspector > strong { display: block; font: 1.05rem var(--display); margin-top: 1.5rem; }.qkv-number { border-top: 1px solid rgba(85,233,255,.18); margin-top: 1.2rem; padding-top: .9rem; }.qkv-number span { color: rgba(238,242,234,.5); display: block; font: .53rem var(--mono); text-transform: uppercase; }.qkv-number strong { color: var(--attention-cyan); display: block; font: 1rem var(--mono); margin: .45rem 0; }.qkv-number small { color: rgba(238,242,234,.52); font-size: .62rem; }.qkv-footer { align-items: center; border-top: 1px solid rgba(85,233,255,.18); display: flex; justify-content: space-between; padding: .85rem 1.15rem; }.qkv-footer strong { color: var(--attention-cyan); font-size: .55rem; }

.calculation-inputs { align-items: stretch; display: grid; grid-template-columns: 1fr 30px 1fr 30px 1fr; gap: .55rem; padding: 1.15rem; }.calculation-source { background: rgba(238,242,234,.045); border: 1px solid rgba(238,242,234,.14); padding: .85rem; }.calculation-source strong { display: block; font: .83rem var(--mono); margin: .7rem 0; }.calculation-source small { color: var(--attention-cyan); font: .75rem var(--mono); }.calculation-symbol { align-self: center; color: var(--attention-cyan); font: 1.4rem var(--display); text-align: center; }.calculation-result { border: 1px solid var(--attention-cyan); margin: 0 1.15rem; padding: 1rem; }.calculation-result strong { color: var(--attention-cyan); display: block; font: clamp(1.6rem, 5vw, 2.4rem) var(--display); margin: .45rem 0; }.calculation-result p { color: rgba(238,242,234,.66); font: .58rem var(--mono); line-height: 1.7; margin: 0; }.calculation-controls { padding: 1.15rem; }.calculation-controls label { display: block; max-width: 480px; }.calculation-controls p { margin-bottom: 0; }
.attention-try-section { background: var(--attention-cyan); color: var(--attention-deep); padding: clamp(3rem, 7vw, 6rem) clamp(1.25rem, 7vw, 8.5rem); }.attention-try-inner { align-items: end; display: flex; gap: 2rem; justify-content: space-between; margin: 0 auto; max-width: var(--max); }.try-kicker { color: rgba(7,20,29,.68); }.attention-try-section h2 { font: 600 clamp(3rem, 7vw, 7rem)/.84 var(--display); letter-spacing: -.1em; margin: 1rem 0 0; overflow-wrap: anywhere; text-transform: uppercase; }.attention-try-section h2 em { color: var(--paper); font-style: normal; }.attention-try-section p { font-size: .82rem; line-height: 1.75; margin: 1.4rem 0 0; max-width: 520px; }.try-reveal { align-items: center; background: var(--attention-deep); color: var(--paper); display: inline-flex; flex: 0 0 auto; gap: 1rem; min-height: 48px; padding: .9rem 1rem; font: .56rem var(--mono); text-transform: uppercase; }.try-reveal:hover, .try-reveal:focus-visible { background: var(--paper); color: var(--attention-deep); }.try-feedback { border-top: 1px solid rgba(7,20,29,.35); color: var(--attention-deep); margin: 2rem auto 0; max-width: var(--max); padding-top: 1rem; }
.attention-source { background: #d3e5e5; padding: 1rem clamp(1.25rem, 7vw, 8.5rem); }.attention-source p { color: rgba(7,20,29,.68); font-size: .65rem; line-height: 1.65; margin: 0 auto; max-width: var(--max); }.attention-source span { color: #06778c; font: .55rem var(--mono); letter-spacing: .08em; margin-right: .6rem; }.attention-source a { color: #06778c; font-weight: 700; }

@media (max-width: 900px) { .attention-visual-grid, .qkv-layout { grid-template-columns: 1fr; }.attention-inspector, .qkv-inspector { border-left: 0; border-top: 1px solid rgba(85,233,255,.18); }.qkv-diagram { grid-template-columns: minmax(90px, .7fr) 50px minmax(100px, 1fr) 40px minmax(100px, 1fr); } }
@media (max-width: 680px) { .attention-sentence-picker, .focus-controls, .attention-sentence-label, .attention-try-inner { align-items: flex-start; flex-direction: column; }.attention-example-buttons { justify-content: flex-start; }.attention-example { flex: 1; }.focus-controls label { max-width: none; width: 100%; }.mask-toggle { align-items: flex-start; flex-direction: column; }.focus-state-grid { grid-template-columns: 1fr; }.qkv-job-picker { align-items: stretch; flex-direction: column; }.qkv-job { width: 100%; }.qkv-diagram { align-items: stretch; grid-template-columns: 1fr; }.qkv-arrow { padding: .2rem; }.qkv-key-list, .qkv-value-list { grid-template-columns: repeat(3, 1fr); }.qkv-footer { align-items: flex-start; flex-direction: column; gap: .5rem; }.calculation-inputs { grid-template-columns: 1fr; }.calculation-symbol { transform: rotate(90deg); }.attention-statusbar { align-items: flex-start; flex-direction: column; }.try-reveal { width: 100%; justify-content: space-between; } }
@media (max-width: 380px) { .attention-example-buttons { display: grid; grid-template-columns: 1fr; width: 100%; }.attention-example { width: 100%; }.attention-sentence-wrap, .attention-map-panel, .attention-inspector, .focus-state-copy, .focus-mask-note, .qkv-diagram, .qkv-inspector, .calculation-controls { padding-left: .8rem; padding-right: .8rem; }.attention-bars, .focus-mini-bars { grid-template-columns: repeat(2, minmax(0, 1fr)); }.qkv-key-list, .qkv-value-list { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .sentence-token, .attention-arc, .attention-bar-meter i, .focus-mini-bar i, .toggle-track i { transition: none; } }