/* White drafting lines, Klein blue, and connected energy intelligence. */
.hero-world.cinematic-world {
  height: clamp(510px, 43vw, 680px);
  margin: 26px 0 0;
  isolation: isolate;
  background: var(--blue);
}
.cinematic-world::before {
  content: "";
  position: absolute;
  pointer-events: none;
  inset: 88px 0 32px;
  background:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at center, #000 15%, transparent 72%);
  z-index: -1;
}
.energy-canvas { display: block; width: 100%; height: 100%; }
.story-caption { position: absolute; top: 22px; left: 22px; pointer-events: none; max-width: 600px; }
.story-eyebrow { font-size: 10px; color: rgba(255, 255, 255, 0.72); letter-spacing: 1.3px; }
.story-eyebrow > span:first-child { color: rgba(255, 255, 255, 0.7); }
.story-caption h2 { font-size: clamp(19px, 2.2vw, 29px); font-weight: 400; letter-spacing: -.5px; margin: 9px 0 5px; }
.story-caption p { font-size: 12px; color: rgba(255, 255, 255, 0.74); max-width: 510px; }
.story-live { position: absolute; top: 25px; right: 24px; display: flex; align-items: center; gap: 9px; font: 9px var(--mono); letter-spacing: .9px; color: rgba(255, 255, 255, 0.73); }
.story-live .status-dot { background: #fff; box-shadow: 0 0 12px rgba(255, 255, 255, .4); }
.story-live small { padding-left: 9px; border-left: 1px solid var(--line); font: 10px var(--font); color: var(--muted); }
.story-corner { position: absolute; width: 16px; height: 16px; pointer-events: none; opacity: .5; }
.story-corner-tl { top: 0; left: 0; border-left: 1px solid rgba(255, 255, 255, 0.66); border-top: 1px solid rgba(255, 255, 255, 0.66); }
.story-corner-br { bottom: 48px; right: 0; border-right: 1px solid rgba(255, 255, 255, 0.66); border-bottom: 1px solid rgba(255, 255, 255, 0.66); }
.story-annotations { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.world-label { position: absolute; transform: translate(-50%, -50%); text-align: center; white-space: nowrap; font-size: 11px; color: rgba(255, 255, 255, 0.81); opacity: 0; text-shadow: 0 2px 9px var(--blue); }
.world-label > span { padding: 4px 8px; border: 1px solid rgba(255, 255, 255, .32); background: rgba(0, 47, 167, .92); }
.world-label small { display: block; font: 8px var(--mono); margin-top: 7px; letter-spacing: 1px; color: rgba(255, 255, 255, 0.72); }
.world-label-graph > span { font: 10px var(--mono); letter-spacing: .7px; border: 0; background: none; }
.world-label-relation > span { font: 9px var(--mono); letter-spacing: .2px; }
.world-label-agent > span { border-color: rgba(255, 255, 255, .6); background: rgba(0, 47, 167, .94); color: #fff; }
.world-label-agent small { color: rgba(255, 255, 255, 0.67); }
.cinematic-world .scene-footnote { bottom: 6px; left: 20px; right: 20px; color: rgba(255, 255, 255, 0.7); font-size: 9px; }
.story-playback { display: flex; gap: 24px; align-items: center; }
.story-replay { display: flex; gap: 8px; align-items: center; border: 0; padding: 8px 0; background: transparent; font-size: 15px; }
.story-replay span, .cinematic-world .motion-toggle { font-size: 11px; }
.story-replay:hover, .cinematic-world .motion-toggle:hover { color: #fff; }
.story-timeline { list-style: none; margin: 5px 0 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line); }
.story-timeline li { position: relative; color: rgba(255, 255, 255, 0.67); --phase-progress: 0%; }
.story-timeline button { width: 100%; display: grid; grid-template-columns: 22px 1fr; gap: 4px 9px; padding: 20px 12px 20px 0; position: relative; background: transparent; border: 0; text-align: left; color: inherit; }
.story-timeline li + li button { padding-left: 21px; border-left: 1px solid rgba(255, 255, 255, .1); }
.story-timeline button > span { font: 10px var(--mono); padding-top: 4px; }
.story-timeline strong { font-size: 14px; font-weight: 400; }
.story-timeline small { grid-column: 2; font: 8px var(--mono); letter-spacing: 1px; opacity: .65; }
.story-timeline i { position: absolute; left: 0; top: -1px; height: 2px; width: var(--phase-progress); background: rgba(255, 255, 255, 0.7); box-shadow: 0 0 9px rgba(255, 255, 255, 0.63); }
.story-timeline .is-active { color: #fff; }
.story-timeline .is-active button > span { color: rgba(255, 255, 255, 0.7); }
.story-timeline .is-complete { color: rgba(255, 255, 255, 0.75); }
.story-timeline button:hover { color: #fff; background: rgba(255, 255, 255, .025); }
.hero-bottom { margin-top: 1px; }
.scene-fallback { position: absolute; inset: 130px 12% 60px; text-align: center; }
.scene-fallback[hidden] { display: none; }
.scene-fallback svg { width: 100%; height: calc(100% - 35px); stroke-width: 1; color: rgba(255, 255, 255, 0.74); }
.scene-fallback p { font-size: 12px; color: var(--muted); }
.story-unavailable .story-playback, .story-timeline.story-unavailable { display: none; }

.scale.section-pad { background: var(--blue); }
.scale-network { position: relative; border: 1px solid rgba(255, 255, 255, .35); background: var(--blue); --signal-progress: 0%; }
.scale-network-head { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid rgba(255, 255, 255, .12); color: rgba(255, 255, 255, 0.72); font: 10px var(--mono); letter-spacing: .9px; gap: 12px; }
.scale-network-head > span:first-child { display: flex; align-items: center; gap: 9px; }
.scale-network-head .status-dot { background: rgba(255, 255, 255, 0.7); box-shadow: 0 0 10px rgba(255, 255, 255, .3); }
.scale-network-head > span:last-child { font: 11px var(--font); letter-spacing: 0; }
.scale-network-head b { font-weight: 400; margin-left: 12px; color: rgba(255, 255, 255, 0.81); }
.scale-models { height: clamp(180px, 19vw, 265px); position: relative; margin: 0 20px; }
.scale-canvas { width: 100%; height: 100%; display: block; }
.scale-model-measure { position: absolute; display: grid; grid-template-columns: repeat(5, 1fr); inset: 14px 0 auto; font: 9px var(--mono); letter-spacing: .8px; text-align: center; color: rgba(255, 255, 255, 0.7); }
.scale-levels { display: grid; grid-template-columns: repeat(5, 1fr); list-style: none; margin: 0 20px; padding: 0; }
.scale-level { position: relative; padding: 8px 17px 0; transition: background .5s; }
.scale-level + .scale-level { border-left: 1px solid rgba(255, 255, 255, .12); }
.scale-level-index { color: rgba(255, 255, 255, 0.66); font: 8px var(--mono); letter-spacing: .65px; }
.scale-level h3 { font-size: clamp(16px, 1.6vw, 21px); font-weight: 400; letter-spacing: -.4px; margin: 8px 0 12px; }
.scale-level p { font-size: 12px; line-height: 1.85; color: rgba(255, 255, 255, 0.74); }
.scale-level p.scale-observation { display: flex; align-items: center; gap: 7px; font-size: 11px; color: rgba(255, 255, 255, 0.81); padding-bottom: 12px; white-space: nowrap; }
.scale-observation::before { content: ''; width: 4px; height: 4px; background: rgba(255, 255, 255, 0.75); border-radius: 50%; flex-shrink: 0; }
.scale-level.is-active { background: linear-gradient(0deg, rgba(255, 255, 255, .055), transparent); }
.scale-level.is-active .scale-level-index { color: rgba(255, 255, 255, 0.72); }
.scale-level.is-active .scale-observation { color: rgba(255, 255, 255, 0.71); }
.scale-level.is-active .scale-observation::before { background: rgba(255, 255, 255, 0.71); box-shadow: 0 0 12px rgba(255, 255, 255, 0.64); }
.ontology-type { font: 8px var(--mono); color: rgba(255, 255, 255, 0.65); margin-top: 23px; white-space: nowrap; }
.ontology-type b { font-weight: 400; color: rgba(255, 255, 255, 0.72); margin-left: 5px; }
.scale-mobile-icon { display: none; }
.ontology-bridge { position: relative; margin: 29px 20px 0; }
.bridge-rail { position: relative; display: flex; justify-content: space-between; height: 1px; background: rgba(255, 255, 255, .6); margin: 0 10%; }
.bridge-rail > i { display: block; position: relative; width: 7px; height: 7px; border: 1px solid rgba(255, 255, 255, 0.75); border-radius: 50%; background: var(--blue); margin-top: -3px; }
.bridge-rail > i::before { content: ''; position: absolute; bottom: 7px; left: 2px; height: 19px; width: 1px; background: rgba(255, 255, 255, .5); }
.bridge-pulse { position: absolute; left: var(--signal-progress); top: -3px; width: 7px; height: 7px; background: rgba(255, 255, 255, 0.76); border-radius: 50%; transform: translateX(-50%); box-shadow: 0 0 14px 3px rgba(255, 255, 255, .3); }
.bridge-relations { display: grid; grid-template-columns: repeat(4, 1fr); margin: 11px 10% 0; text-align: center; font-size: 10px; color: rgba(255, 255, 255, 0.69); }
.bridge-relations b { font: 9px var(--mono); font-weight: 400; margin-left: 5px; color: rgba(255, 255, 255, 0.78); }
.inference-return { display: flex; gap: 18px; align-items: center; padding: 20px 9% 24px; color: rgba(255, 255, 255, 0.72); font-size: 10px; }
.inference-return i { height: 1px; flex: 1; background: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.66) 0 4px, transparent 4px 8px); opacity: .65; }
.scale-network[data-direction="up"] .inference-return { color: rgba(255, 255, 255, 0.71); }
.scale-network[data-direction="up"] .inference-return i { background: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.71) 0 4px, transparent 4px 8px); }
.inference-panel { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; border-top: 1px solid rgba(255, 255, 255, .18); margin: 0 24px; padding: 28px 0; align-items: center; }
.inference-direction > .mono, .inference-proof > .mono { font-size: 9px; letter-spacing: .8px; color: rgba(255, 255, 255, 0.66); }
.inference-direction h3 { font-size: clamp(18px, 1.9vw, 25px); font-weight: 400; margin: 8px 0 8px; letter-spacing: -.6px; }
.inference-direction p { min-height: 22px; font-size: 12px; color: rgba(255, 255, 255, 0.74); line-height: 1.85; max-width: 520px; }
.inference-proof { padding-left: 26px; border-left: 1px solid rgba(255, 255, 255, .14); }
.inference-proof p { margin: 13px 0 9px; display: flex; gap: 9px; align-items: center; flex-wrap: wrap; font-size: 12px; }
.inference-proof p span { color: rgba(255, 255, 255, 0.66); }
.inference-proof small { font-size: 11px; color: rgba(255, 255, 255, 0.7); }
.scale-network-footer { border-top: 1px solid rgba(255, 255, 255, .14); padding: 12px 24px; display: flex; justify-content: space-between; align-items: center; gap: 14px; font-size: 11px; color: rgba(255, 255, 255, 0.73); }
.scale-motion-toggle { background: transparent; border: 0; display: flex; gap: 7px; align-items: center; padding: 4px 0 4px 10px; font-size: 11px; white-space: nowrap; }
.scale-motion-toggle:hover { color: #fff; }
.models-fallback .scale-models { display: none; }
.models-fallback .scale-mobile-icon { display: block; height: 165px; text-align: center; color: rgba(255, 255, 255, 0.76); }
.models-fallback .scale-mobile-icon svg { height: 100%; width: 100%; max-width: 150px; stroke-width: .8; }

/* The desktop landing composition fits the available browser viewport. */
@media (min-width: 761px) {
  .home-page { --landing-header-height: clamp(56px, 8svh, 84px); }
  .home-page .site-header { height: var(--landing-header-height); }
  .home-page .site-nav a { padding: 15px 0; }
  .home-page .site-nav a.active::after { bottom: 6px; }
  .home-page .hero {
    height: calc(100vh - var(--landing-header-height));
    height: calc(100svh - var(--landing-header-height));
    display: grid;
    grid-template-columns: minmax(260px, .8fr) minmax(0, 1.75fr);
    grid-template-rows: auto minmax(0, 1fr) auto auto;
    grid-template-areas: "topline topline" "intro world" "timeline timeline" "bottom bottom";
    column-gap: clamp(20px, 3vw, 50px);
    padding-top: clamp(10px, 1.8svh, 19px);
  }
  .home-page .hero-topline { grid-area: topline; font-size: 10px; }
  .home-page .hero-edition { font-size: 11px; }
  .home-page .hero-heading {
    grid-area: intro;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: clamp(18px, 3.5svh, 36px);
    margin: 0;
    padding-bottom: clamp(12px, 3svh, 32px);
  }
  .home-page .hero-heading h1 {
    font-size: clamp(38px, min(4.6vw, 7.5svh), 76px);
    line-height: 1.2;
    letter-spacing: -.045em;
  }
  .home-page .hero-aside { max-width: 310px; padding-right: 0; }
  .home-page .hero-aside > p:first-child { font-size: 16px; margin-bottom: 8px; }
  .home-page .hero-description { font-size: 13px; line-height: 1.85; margin-bottom: 18px; }
  .home-page .hero-aside .button { min-height: 45px; font-size: 13px; padding: 10px 18px; }
  .home-page .hero-world.cinematic-world {
    grid-area: world;
    height: auto;
    min-width: 0;
    min-height: 0;
    margin: 14px 0 8px;
  }
  .home-page .energy-canvas {
    position: absolute;
    top: 88px;
    left: 0;
    width: 100%;
    height: calc(100% - 120px);
  }
  .home-page .story-caption { left: 14px; top: 12px; right: 12px; max-width: none; }
  .home-page .story-caption h2 { font-size: clamp(17px, min(1.85vw, 3svh), 27px); margin-top: 6px; }
  .home-page .story-caption p { font-size: 11px; line-height: 1.7; max-width: 470px; }
  .home-page .story-eyebrow { font-size: 8px; letter-spacing: .8px; }
  .home-page .story-live { top: auto; bottom: 44px; right: 14px; font-size: 8px; }
  .home-page .story-live small { font-size: 9px; }
  .home-page .cinematic-world .scene-footnote { left: 12px; right: 12px; bottom: 0; }
  .home-page .story-coordinate { font-size: 7px; letter-spacing: .4px; }
  .home-page .story-timeline { grid-area: timeline; margin: 0; }
  .home-page .story-timeline button { padding-top: clamp(10px, 1.65svh, 18px); padding-bottom: clamp(10px, 1.65svh, 18px); }
  .home-page .hero-bottom { grid-area: bottom; padding: clamp(10px, 1.7svh, 18px) 0; font-size: 11px; }
  .home-page .hero-coordinate { font-size: 9px; }
  .home-page .scene-fallback { inset: 100px 4% 55px; }
}
@media (min-width: 761px) and (max-height: 640px) {
  .home-page .hero-heading { gap: 14px; padding-bottom: 6px; }
  .home-page .hero-heading h1 { font-size: clamp(34px, min(4.2vw, 7.2svh), 46px); }
  .home-page .hero-aside > p:first-child { font-size: 14px; margin-bottom: 6px; }
  .home-page .hero-description { font-size: 12px; line-height: 1.7; margin-bottom: 12px; }
  .home-page .hero-description br { display: none; }
  .home-page .hero-aside .button { min-height: 39px; padding-top: 7px; padding-bottom: 7px; }
  .home-page .hero-world.cinematic-world { margin-top: 10px; }
  .home-page .energy-canvas { top: 76px; height: calc(100% - 106px); }
  .home-page .story-caption h2 { font-size: 17px; }
  .home-page .story-timeline strong { font-size: 12px; }
  .home-page .story-timeline small { font-size: 7px; }
}

@media (max-width: 1100px) {
  .scale-level { padding-left: 11px; padding-right: 11px; }
  .scale-models, .scale-levels { margin-left: 12px; margin-right: 12px; }
  .scale-level-index { font-size: 7px; letter-spacing: .15px; }
  .scale-level p { font-size: 11px; }
  .scale-level p.scale-observation { font-size: 10px; gap: 5px; }
  .ontology-type { font-size: 7px; }
  .ontology-type b { margin-left: 1px; }
  .bridge-relations b { font-size: 8px; }
  .inference-panel { gap: 20px; }
  .inference-proof { padding-left: 18px; }
  .inference-proof p { font-size: 11px; gap: 5px; }
}
@media (max-width: 760px) {
  .hero-world.cinematic-world { height: 490px; margin: 28px -1% 0; }
  .story-caption { top: 19px; left: 10px; right: 10px; }
  .story-eyebrow { font-size: 8px; letter-spacing: .7px; }
  .story-caption h2 { font-size: 19px; margin-top: 10px; max-width: 310px; line-height: 1.5; }
  .story-caption p { font-size: 11px; max-width: 310px; line-height: 1.85; }
  .story-live { top: auto; right: 10px; bottom: 43px; font-size: 7px; gap: 6px; }
  .story-live small { font-size: 8px; padding-left: 6px; }
  .story-corner-br { bottom: 72px; }
  .world-label { font-size: 9px; }
  .world-label small { font-size: 6px; letter-spacing: .2px; }
  .world-label > span { padding: 3px 5px; }
  .world-label-graph > span, .world-label-relation > span { font-size: 7px; }
  .world-label-relation { max-width: 270px; }
  .cinematic-world .scene-footnote { left: 9px; right: 9px; bottom: 0; }
  .story-coordinate { font-size: 6px; letter-spacing: .1px; max-width: 155px; }
  .story-playback { gap: 13px; }
  .story-replay span, .cinematic-world .motion-toggle { font-size: 10px; }
  .story-timeline { margin-top: 10px; }
  .story-timeline button, .story-timeline li + li button { display: flex; flex-direction: column; align-items: flex-start; padding: 13px 7px 14px; gap: 5px; }
  .story-timeline strong { font-size: 11px; white-space: nowrap; }
  .story-timeline button > span { font-size: 8px; }
  .story-timeline small { font-size: 5.5px; letter-spacing: .1px; }
  .scale-network-head { padding: 16px; flex-wrap: wrap; font-size: 8px; }
  .scale-network-head > span:last-child { font-size: 10px; }
  .scale-models { display: none; }
  .scale-levels { display: flex; flex-direction: column; gap: 0; margin: 13px 16px 0 30px; position: relative; }
  .scale-levels::before { content: ''; position: absolute; top: 44px; bottom: 42px; left: -14px; width: 1px; background: linear-gradient(rgba(255, 255, 255, 0.69), rgba(255, 255, 255, 0.61)); }
  .scale-level, .scale-level + .scale-level { display: grid; grid-template-columns: 89px 1fr; gap: 12px; padding: 19px 0; border: 0; border-bottom: 1px solid rgba(255, 255, 255, .1); }
  .scale-level:last-child { border-bottom: 0; }
  .scale-level::before { content: ''; position: absolute; left: -17px; top: 55px; width: 7px; height: 7px; background: var(--blue); border: 1px solid rgba(255, 255, 255, 0.71); border-radius: 50%; }
  .scale-level.is-active::before { background: rgba(255, 255, 255, 0.74); box-shadow: 0 0 13px rgba(255, 255, 255, 0.66); }
  .scale-level:not(:last-child)::after { content: '↓ ' attr(data-relation); position: absolute; left: -5px; bottom: -7px; z-index: 1; font: 8px var(--mono); color: rgba(255, 255, 255, 0.69); background: var(--blue); padding: 0 7px; }
  .scale-level[data-level="0"] { --relation: 'contains'; }
  .scale-level[data-level="0"]::after { content: '↓ contains / 包含'; }
  .scale-level[data-level="1"]::after { content: '↓ composedOf / 组成'; }
  .scale-level[data-level="2"]::after { content: '↓ usesMaterial / 材料'; }
  .scale-level[data-level="3"]::after { content: '↓ hasStructure / 结构'; }
  .scale-mobile-icon, .models-fallback .scale-mobile-icon { display: flex; height: 115px; align-items: center; justify-content: center; color: rgba(255, 255, 255, 0.76); padding-top: 12px; }
  .scale-mobile-icon svg { width: 100%; height: 108px; stroke-width: .9; }
  .scale-level-body { padding-right: 1px; }
  .scale-level-index { font-size: 7px; letter-spacing: .5px; }
  .scale-level h3 { font-size: 19px; margin: 6px 0 9px; }
  .scale-level p { font-size: 11px; line-height: 1.9; }
  .scale-level p.scale-observation { padding-bottom: 6px; font-size: 11px; }
  .ontology-type { margin-top: 11px; font-size: 7px; }
  .ontology-type b { margin-left: 4px; }
  .ontology-bridge { display: none; }
  .inference-return { padding: 18px 16px 20px; font-size: 9px; gap: 8px; }
  .inference-panel { display: block; margin: 0 16px; padding: 23px 0; }
  .inference-direction h3 { font-size: 19px; line-height: 1.5; }
  .inference-direction p { font-size: 11px; min-height: 42px; }
  .inference-proof { padding: 19px 0 0; margin-top: 20px; border-left: 0; border-top: 1px solid rgba(255, 255, 255, .12); }
  .inference-proof p { font-size: 10px; gap: 6px; }
  .inference-proof small { font-size: 10px; }
  .scale-network-footer { padding: 12px 16px; font-size: 10px; }
  .scale-motion-toggle { font-size: 10px; }
  .scene-fallback { inset: 130px 0 85px; }
  .scene-fallback p { font-size: 10px; }
}
@media (max-width: 360px) {
  .story-timeline button, .story-timeline li + li button { padding-left: 4px; padding-right: 3px; }
  .story-timeline strong { font-size: 10px; }
  .story-coordinate { max-width: 126px; }
  .story-caption h2 { font-size: 17px; }
  .scale-level, .scale-level + .scale-level { grid-template-columns: 70px 1fr; gap: 9px; }
}
@media (prefers-reduced-motion: reduce) {
  .scale-level { transition: none; }
}