:root {
  color-scheme: dark;
  --bg: var(--echo-ground);
  --text: var(--echo-ink);
  --muted: var(--echo-ink-muted);
  --dim: var(--echo-ink-faint);
  --line: var(--echo-line);
  --blue: var(--echo-ink-muted);
  --violet: var(--echo-ink-muted);
  --content: 1240px;
  --gutter: clamp(22px, 4vw, 64px);
  font-family: var(--echo-font-sans);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body { margin: 0; min-width: 320px; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.universe-header { position: fixed; z-index: 50; top: 0; left: 50%; width: min(calc(100% - var(--gutter) * 2), var(--content)); height: 76px; transform: translateX(-50%); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; }
.universe-header::before { content: ""; position: absolute; z-index: -1; inset: 0 calc(var(--gutter) * -1); background: linear-gradient(180deg, rgba(9, 10, 12, .95), rgba(9, 10, 12, .26) 76%, transparent); }
.universe-brand { display: flex; align-items: center; width: max-content; }
.universe-nav { display: flex; gap: clamp(24px, 3.4vw, 48px); }
.universe-nav a { color: var(--echo-ink-muted); font-size: 9px; letter-spacing: .14em; white-space: nowrap; transition: color .2s ease; }
.universe-nav a:hover, .universe-nav a.active { color: var(--echo-ink); text-shadow: none; }
.universe-header.scrolled::before { backdrop-filter: blur(14px); border-bottom: 1px solid rgba(238, 241, 244, .09); }
.universe-actions { justify-self: end; display: flex; align-items: center; gap: 15px; }
.locale-switch { display: flex; align-items: center; gap: 2px; color: var(--echo-ink-faint); font-size: 8px; }
.locale-switch button { padding: 5px 3px; border: 0; color: var(--echo-ink-muted); background: transparent; cursor: pointer; }
.locale-switch button.active { color: var(--echo-ink); }
.locale-switch button:focus-visible, a:focus-visible, button:focus-visible { outline: 1px solid var(--echo-ink-muted); outline-offset: 3px; }
.back-echo { min-width: 108px; height: 34px; padding: 0 14px; display: grid; place-items: center; border: 1px solid rgba(238, 241, 244, .22); border-radius: var(--echo-radius-sm); background: rgba(9, 10, 12, .55); font-size: 8px; letter-spacing: .12em; }
main { position: relative; overflow: hidden; isolation: isolate; }
#memory-sea { position: absolute; z-index: 0; inset: 0 auto auto 0; width: 100%; pointer-events: none; }
.universe-hero, .canon-snapshot, .universe-section { position: relative; z-index: 1; scroll-margin-top: 82px; border-bottom: 1px solid var(--line); }
.universe-hero { min-height: 760px; height: 100svh; max-height: 980px; display: grid; place-items: center; overflow: hidden; background: radial-gradient(circle at 67% 48%, rgba(110, 125, 145, .1), transparent 31%), linear-gradient(180deg, rgba(0,0,0,.08), rgba(0,0,0,.42)); }
.universe-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--echo-ground) 0, transparent 15%, transparent 86%, var(--echo-ground) 100%); pointer-events: none; }
.hero-copy { position: relative; z-index: 4; width: min(calc(100% - var(--gutter) * 2), var(--content)); }
.eyebrow, .kicker { margin: 0 0 19px; color: var(--echo-ink-muted); font-size: 9px; letter-spacing: .22em; }
.hero-copy h1 { margin: 0; max-width: 790px; font-size: clamp(62px, 8.4vw, 124px); font-weight: 150; line-height: .79; letter-spacing: .11em; text-shadow: none; }
.hero-copy h1 span { padding-left: .85em; color: var(--echo-ink); }
.zh-title { margin: 30px 0 0; color: var(--echo-ink); font-size: 17px; letter-spacing: .48em; }
.hero-lead { max-width: 560px; margin: 19px 0 0; color: var(--echo-ink-muted); font-size: 13px; line-height: 1.75; }
.hero-actions { margin-top: 30px; display: flex; align-items: center; gap: 24px; }
.primary-action { min-width: 160px; height: 43px; padding: 0 17px 0 21px; display: flex; align-items: center; justify-content: space-between; border: 1px solid rgba(238, 241, 244, .36); border-radius: var(--echo-radius-sm); background: linear-gradient(120deg, rgba(74, 84, 97, .38), rgba(66, 76, 88, .3)); font-size: 9px; letter-spacing: .13em; }
.primary-action b { color: var(--echo-ink); font-size: 13px; }
.text-action { color: var(--echo-ink-muted); font-size: 9px; letter-spacing: .12em; border-bottom: 1px solid var(--echo-ink-faint); padding-bottom: 5px; }
.world-signal { position: absolute; z-index: 2; left: 66%; top: 51%; width: min(42vw, 560px); aspect-ratio: 1; transform: translate(-50%,-50%); border-radius: 50%; background: radial-gradient(circle, rgba(238, 241, 244, .2), rgba(83, 95, 111, .06) 31%, transparent 65%); }
.world-signal::before, .world-signal::after { content: ""; position: absolute; inset: 13%; border: 1px solid rgba(238, 241, 244, .19); border-radius: 50%; animation: orbit 28s linear infinite; }
.world-signal::after { inset: 28%; border-style: dashed; border-color: rgba(238, 241, 244, .22); animation-direction: reverse; animation-duration: 41s; }
.signal-core { position: absolute; left: 50%; top: 50%; width: 122px; aspect-ratio: 1; transform: translate(-50%,-50%); display: grid; place-items: center; border: 1px solid rgba(238, 241, 244, .42); border-radius: 50%; background: radial-gradient(circle at 38% 30%, var(--echo-ink) 0 2%, var(--echo-ink-muted) 5%, #1f242a 22%, var(--echo-surface) 64%); box-shadow: none; }
.signal-core i { color: var(--echo-ink); font-size: 31px; font-style: normal; font-weight: 260; }
.signal-label { position: absolute; padding: 8px 11px; border: 1px solid rgba(238, 241, 244, .16); border-radius: var(--echo-radius-xs); background: rgba(9, 10, 12, .72); color: var(--echo-ink-muted); font-size: 8px; letter-spacing: .13em; }
.signal-human { left: 2%; top: 47%; }.signal-echo { right: 3%; top: 23%; }.signal-ghost { right: 7%; bottom: 18%; }
.scroll-marker { position: absolute; z-index: 5; left: 50%; bottom: 24px; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--echo-ink-muted); font-size: 8px; letter-spacing: .18em; }
.scroll-marker i { width: 1px; height: 25px; background: linear-gradient(var(--echo-ink-muted),var(--echo-ink-muted),transparent); box-shadow: none; }
.canon-snapshot { min-height: 620px; padding: 98px max(var(--gutter), calc((100vw - var(--content)) / 2)); background: rgba(9, 10, 12, .5); }
.canon-snapshot header { display: flex; align-items: end; justify-content: space-between; gap: 30px; }
.canon-snapshot h2 { max-width: 700px; margin: 0; font-size: clamp(34px,4.2vw,58px); font-weight: 250; line-height: 1.12; }
.question-grid { margin-top: 60px; display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.question-grid article { min-height: 170px; padding: 22px; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(150deg, rgba(9, 10, 12, .75), rgba(9, 10, 12, .82)); }
.question-grid span { color: var(--echo-ink-muted); font-size: 9px; letter-spacing: .14em; }
.question-grid p { margin: 40px 0 0; color: var(--echo-ink); font-size: 15px; line-height: 1.65; }
.canon-rule { margin-top: 16px; padding: 18px 22px; display: flex; align-items: center; gap: 18px; border: 1px solid var(--echo-line); border-radius: var(--echo-radius-md); background: var(--echo-surface); color: var(--echo-ink-muted); font-size: 11px; line-height: 1.6; }
.canon-rule b { color: var(--echo-ink); font: 400 10px var(--echo-font-display); letter-spacing: .22em; }
.section-inner { width: min(calc(100% - var(--gutter) * 2), var(--content)); margin: 0 auto; }
.section-heading { display: grid; grid-template-columns: 1fr minmax(330px,.72fr); align-items: end; gap: 70px; }
.section-heading h2, .atlas-copy h2, .community-copy h2, .canon-notes h2 { margin: 0; font-size: clamp(36px,4.2vw,58px); font-weight: 240; line-height: 1.08; letter-spacing: -.035em; }
.heading-copy { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }
.badge { width: max-content; min-height: 22px; padding: 0 8px; display: inline-flex; align-items: center; border: 1px solid var(--echo-line-strong); border-radius: var(--echo-radius-xs); color: var(--echo-ink-muted); background: transparent; font: 500 10px var(--echo-font-telemetry); letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
/* Content classes are neutral badges told apart by their label and a short line, never by colour:
   canon solid (the only badge allowed the Echo Core accent), candidate dashed, personal dotted. */
.badge:is(.canon, .candidate, .personal) { gap: 6px; color: var(--echo-ink); }
.protocol-list b { display: flex; align-items: center; gap: 8px; }
.badge:is(.canon, .candidate, .personal)::before, .protocol-list b::before { content: ""; flex: none; width: 10px; height: 2px; background: currentColor; }
.badge.canon::before, .protocol-list .canon::before { background: var(--echo-core); }
.badge.candidate::before, .protocol-list .candidate::before { background: linear-gradient(90deg, currentColor 0 4px, transparent 4px 6px, currentColor 6px); }
.badge.personal::before, .protocol-list .personal::before { background: repeating-linear-gradient(90deg, currentColor 0 2px, transparent 2px 4px); }
/* Production states stay plain: available reads brighter, in development muted, concept dashed. */
.badge.available { color: var(--echo-ink); }
.badge.development { color: var(--echo-ink-muted); }
.badge.concept { color: var(--echo-ink-muted); border-style: dashed; }

.story-section { min-height: 900px; padding: 104px 0 112px; background: radial-gradient(circle at 73% 55%, rgba(104, 118, 137, .09), transparent 31%), rgba(9, 10, 12, .48); }
.story-heading { margin-bottom: 56px; }
.spoiler-toggle { margin-top: 20px; padding: 0; display: flex; align-items: center; gap: 10px; border: 0; color: var(--echo-ink-muted); background: transparent; font-size: 9px; letter-spacing: .1em; cursor: pointer; }
.spoiler-toggle i { position: relative; width: 35px; height: 19px; border: 1px solid rgba(238, 241, 244, .28); border-radius: 999px; background: rgba(9, 10, 12, .8); }
.spoiler-toggle i::after { content: ""; position: absolute; left: 3px; top: 3px; width: 11px; height: 11px; border-radius: 50%; background: var(--echo-ink-muted); transition: transform .25s ease, background .25s ease; }
.spoiler-toggle[aria-pressed="true"] i::after { transform: translateX(16px); background: var(--echo-core); box-shadow: none; }
.season-layout { display: grid; grid-template-columns: 270px 1fr; gap: 18px; }
.season-rail { display: flex; flex-direction: column; gap: 10px; }
.season-tab { min-height: 128px; padding: 17px 18px; display: grid; grid-template-columns: 40px 1fr; grid-template-rows: 1fr auto; align-items: center; border: 1px solid var(--line); border-radius: 14px; color: var(--echo-ink-muted); background: rgba(9, 10, 12, .68); text-align: left; cursor: pointer; transition: border-color .25s ease, background .25s ease, color .25s ease; }
.season-tab:hover, .season-tab.active { color: var(--echo-ink); border-color: rgba(238, 241, 244, .38); background: linear-gradient(140deg, rgba(28, 32, 37, .85), rgba(9, 10, 12, .88)); }
.season-tab > span { color: var(--echo-ink-muted); font-size: 9px; letter-spacing: .14em; }.season-tab > strong { font-size: 14px; font-weight: 450; }.season-tab small { grid-column: 2; display: flex; flex-wrap: wrap; gap: 5px; }
.season-focus { min-height: 510px; padding: 36px 38px 30px; display: flex; flex-direction: column; border: 1px solid rgba(238, 241, 244, .19); border-radius: 18px; background: radial-gradient(circle at 77% 22%, rgba(238, 241, 244, .15), transparent 28%), linear-gradient(150deg, rgba(9, 10, 12, .9), rgba(9, 10, 12, .94)); overflow: hidden; }
.season-focus::before { content: ""; position: absolute; right: -4%; top: -33%; width: 56%; aspect-ratio: 1; border: 1px solid rgba(238, 241, 244, .13); border-radius: 50%; box-shadow: inset 0 0 90px rgba(128, 141, 159, .05), 0 0 80px rgba(128, 141, 159, .04); }
.season-index { position: relative; color: var(--echo-ink-muted); font-size: 9px; letter-spacing: .17em; }
.season-focus h3 { position: relative; margin: 28px 0 0; font-size: clamp(38px,4.4vw,62px); font-weight: 230; line-height: .92; letter-spacing: -.025em; }
.season-focus h3 span { color: var(--echo-ink-muted); font-size: .36em; letter-spacing: .22em; }
.season-focus > p { position: relative; max-width: 760px; margin: 25px 0 0; color: var(--echo-ink-muted); font-size: 13px; line-height: 1.78; }
.story-beats { position: relative; margin-top: 32px; display: grid; grid-template-columns: repeat(4,1fr); gap: 9px; }
.story-beats article { min-height: 105px; padding: 14px; border: 1px solid rgba(238, 241, 244, .13); border-radius: 10px; background: rgba(9, 10, 12, .62); }
.story-beats span { color: var(--echo-ink-muted); font-size: 8px; letter-spacing: .12em; }.story-beats strong { display: block; margin-top: 22px; color: var(--echo-ink); font-size: 11px; font-weight: 470; line-height: 1.5; }
.season-meta { position: relative; margin-top: auto; padding-top: 27px; display: flex; justify-content: space-between; gap: 20px; color: var(--echo-ink-muted); font-size: 8px; letter-spacing: .12em; }.season-meta b { color: var(--echo-ink-muted); font-weight: 520; }

.atlas-section { min-height: 830px; padding: 104px 0 110px; }
.atlas-layout { display: grid; grid-template-columns: 31% 69%; align-items: center; gap: 46px; }
.atlas-copy > p:not(.kicker) { max-width: 360px; margin: 22px 0 0; color: var(--muted); font-size: 13px; line-height: 1.78; }
.atlas-tabs { margin-top: 31px; display: flex; flex-wrap: wrap; gap: 8px; }
.atlas-tab { min-height: 32px; padding: 0 12px; border: 1px solid var(--line); border-radius: var(--echo-radius-sm); color: var(--echo-ink-muted); background: rgba(9, 10, 12, .64); font-size: 9px; cursor: pointer; }
.atlas-tab.active, .atlas-tab:hover { color: var(--echo-ink); border-color: rgba(238, 241, 244, .38); background: rgba(35, 40, 47, .65); }
.atlas-board { min-height: 570px; display: grid; grid-template-columns: 1.35fr .85fr; border: 1px solid var(--line); border-radius: 20px; background: radial-gradient(circle at 35% 49%, rgba(129, 142, 160, .15), transparent 26%), rgba(9, 10, 12, .74); overflow: hidden; }
.atlas-network { position: relative; min-height: 570px; border-right: 1px solid var(--line); }
.atlas-network::before, .atlas-network::after { content: ""; position: absolute; left: 50%; top: 50%; width: 56%; aspect-ratio: 1; transform: translate(-50%,-50%); border: 1px solid rgba(238, 241, 244, .12); border-radius: 50%; }
.atlas-network::after { width: 82%; border-style: dashed; border-color: rgba(238, 241, 244, .1); }
.atlas-core { position: absolute; z-index: 2; left: 50%; top: 50%; width: 80px; aspect-ratio: 1; transform: translate(-50%,-50%); display: grid; place-items: center; border: 1px solid var(--echo-line-strong); border-radius: 50%; background: var(--echo-surface-raised); box-shadow: var(--echo-shadow-raised); color: var(--echo-ink); }
.atlas-core .echo-mark { width: 46px; height: auto; }
.atlas-node { position: absolute; z-index: 3; width: 138px; min-height: 58px; padding: 11px 12px; display: flex; flex-direction: column; justify-content: center; border: 1px solid rgba(238, 241, 244, .17); border-radius: 9px; color: var(--echo-ink-muted); background: rgba(9, 10, 12, .82); text-align: left; cursor: pointer; }
.atlas-node:hover, .atlas-node.active { color: var(--echo-ink); border-color: rgba(238, 241, 244, .44); box-shadow: none; }
.atlas-node small { color: var(--echo-ink-faint); font-size: 7px; letter-spacing: .12em; }.atlas-node strong { margin-top: 5px; font-size: 10px; font-weight: 500; }
.atlas-node:nth-of-type(1) { left: 7%; top: 11%; }.atlas-node:nth-of-type(2) { right: 6%; top: 16%; }.atlas-node:nth-of-type(3) { left: 4%; bottom: 15%; }.atlas-node:nth-of-type(4) { right: 7%; bottom: 12%; }
.atlas-detail { padding: 34px 27px; display: flex; flex-direction: column; justify-content: center; background: rgba(9, 10, 12, .55); }
.atlas-detail .detail-status { display: flex; gap: 6px; }.atlas-detail .detail-type { margin-top: 30px; color: var(--echo-ink-muted); font-size: 8px; letter-spacing: .14em; }.atlas-detail h3 { margin: 10px 0 0; font-size: 29px; font-weight: 300; }.atlas-detail p { margin: 18px 0 0; color: var(--echo-ink-muted); font-size: 11px; line-height: 1.75; }.atlas-detail small { margin-top: auto; padding-top: 30px; color: var(--echo-ink-faint); font-size: 8px; line-height: 1.6; }

.media-section { min-height: 880px; padding: 104px 0 112px; background: rgba(9, 10, 12, .42); }
.media-heading { margin-bottom: 46px; }
.media-switcher { display: grid; grid-template-columns: repeat(6,1fr); border: 1px solid var(--line); border-radius: var(--echo-radius-md); padding: 4px; background: rgba(9, 10, 12, .72); }
.media-tab { height: 37px; border: 0; border-radius: var(--echo-radius-sm); color: var(--echo-ink-muted); background: transparent; font-size: 9px; letter-spacing: .08em; cursor: pointer; }.media-tab.active { color: var(--echo-ink); background: linear-gradient(120deg, rgba(77, 88, 102, .66), rgba(75, 86, 100, .56)); box-shadow: inset 0 0 0 1px rgba(238, 241, 244, .2); }
.media-focus { min-height: 520px; margin-top: 17px; display: grid; grid-template-columns: 88px 1fr 46%; border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(145deg, rgba(9, 10, 12, .88), rgba(9, 10, 12, .93)); overflow: hidden; }
.media-number { padding: 31px 0 0 28px; color: var(--echo-ink-faint); font-size: 9px; letter-spacing: .17em; }
.media-copy { padding: 68px 20px 48px; display: flex; flex-direction: column; align-items: flex-start; }
.dual-status { display: flex; flex-wrap: wrap; gap: 6px; }.media-kicker { margin: 35px 0 0 !important; color: var(--echo-ink-muted) !important; font-size: 8px !important; letter-spacing: .16em; }.media-copy h3 { margin: 12px 0 0; font-size: clamp(42px,5vw,68px); font-weight: 240; line-height: 1; }.media-copy > p:not(.media-kicker) { max-width: 500px; margin: 22px 0 0; color: var(--echo-ink-muted); font-size: 13px; line-height: 1.78; }.media-copy > a { min-width: 150px; height: 40px; margin-top: 32px; padding: 0 17px; display: grid; place-items: center; border: 1px solid rgba(238, 241, 244, .3); border-radius: var(--echo-radius-sm); color: var(--echo-ink); font-size: 9px; letter-spacing: .1em; }.media-copy > a[aria-disabled="true"] { color: var(--echo-ink-muted); border-color: var(--line); pointer-events: none; }
.media-visual { position: relative; display: grid; place-items: center; overflow: hidden; background: radial-gradient(circle, rgba(134, 147, 164, .2), rgba(83, 95, 110, .06) 36%, transparent 67%); }
.format-frame { position: relative; width: min(72%,340px); aspect-ratio: .74; display: grid; place-items: center; border: 1px solid rgba(238, 241, 244, .25); border-radius: var(--echo-radius-md); background: linear-gradient(145deg, rgba(31, 35, 41, .72), rgba(9, 10, 12, .82)); box-shadow: 0 35px 70px rgba(0,0,0,.35), inset 0 0 60px rgba(238, 241, 244, .06); transform: perspective(900px) rotateY(-8deg) rotateX(2deg); }
.format-frame::before { content: "ECHO AGE"; position: absolute; top: 22px; color: var(--echo-ink-muted); font-size: 8px; letter-spacing: .21em; }.format-frame span { color: var(--echo-ink); font-size: clamp(20px,2.2vw,30px); font-weight: 260; letter-spacing: .15em; text-align: center; }.format-frame i,.format-frame b { position: absolute; left: 50%; top: 50%; width: 56%; aspect-ratio: 1; transform: translate(-50%,-50%); border: 1px solid rgba(238, 241, 244, .2); border-radius: 50%; }.format-frame b { width: 36%; border-style: dashed; border-color: rgba(238, 241, 244, .21); }

.community-section { min-height: 700px; padding: 106px 0; }
.community-layout { display: grid; grid-template-columns: 34% 66%; align-items: center; gap: 50px; }.community-copy > p:not(.kicker) { max-width: 390px; margin: 22px 0; color: var(--echo-ink-muted); font-size: 13px; line-height: 1.75; }
.governance-flow { display: grid; grid-template-columns: 1fr 18px 1fr 18px 1fr 18px 1fr; align-items: stretch; gap: 7px; }
.governance-flow article { min-height: 250px; padding: 20px 16px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 14px; background: rgba(9, 10, 12, .68); }.governance-flow article > span { color: var(--echo-ink-faint); font-size: 9px; }.governance-flow article strong { margin-top: auto; color: var(--echo-ink); font-size: 12px; font-weight: 480; }.governance-flow article p { margin: 10px 0 0; color: var(--echo-ink-muted); font-size: 10px; line-height: 1.65; }.governance-flow > i { align-self: center; color: var(--echo-ink-faint); font-size: 11px; font-style: normal; text-align: center; }

.canon-notes { min-height: 760px; padding: 104px 0 84px; background: linear-gradient(180deg, rgba(9, 10, 12, .34), rgba(9, 10, 12, .78)); }
.canon-notes-layout { display: grid; grid-template-columns: 33% 1fr; gap: 60px; }.protocol-list { display: grid; gap: 10px; }.protocol-list article { min-height: 94px; padding: 20px 22px; display: grid; grid-template-columns: 130px 1fr; align-items: center; border: 1px solid var(--line); border-radius: 13px; background: rgba(9, 10, 12, .62); }.protocol-list b { color: var(--echo-ink-muted); font-size: 9px; letter-spacing: .14em; }.protocol-list p { margin: 0; color: var(--echo-ink-muted); font-size: 11px; line-height: 1.65; }
.final-universe { grid-column: 1 / -1; min-height: 280px; margin-top: 30px; padding: 44px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 18px; background: radial-gradient(circle at 50% 70%, rgba(127, 141, 159, .18), transparent 37%), rgba(9, 10, 12, .64); text-align: center; }.final-universe > p { margin: 0; color: var(--echo-ink-muted); font-size: 9px; letter-spacing: .2em; }.final-universe h3 { margin: 18px 0 0; font-size: clamp(30px,3.6vw,48px); font-weight: 250; }.final-universe > div { margin-top: 28px; display: flex; gap: 10px; }.final-universe a { min-width: 142px; height: 40px; padding: 0 16px; display: grid; place-items: center; border: 1px solid rgba(238, 241, 244, .28); border-radius: var(--echo-radius-sm); color: var(--echo-ink); font-size: 9px; }.canon-notes footer { width: min(calc(100% - var(--gutter) * 2), var(--content)); height: 74px; margin: 74px auto -84px; display: grid; grid-template-columns: 1fr auto auto 1fr; column-gap: 28px; align-items: center; border-top: 1px solid rgba(238, 241, 244, .09); color: var(--echo-ink-faint); font-size: 8px; letter-spacing: .1em; }.canon-notes footer a { color: var(--echo-ink-muted); }.canon-notes footer small { justify-self: end; }

@keyframes orbit { to { rotate: 360deg; } }
@media (max-width: 1000px) { .season-layout { grid-template-columns: 220px 1fr; }.story-beats { grid-template-columns: repeat(2,1fr); }.atlas-layout { grid-template-columns: 1fr; }.atlas-copy > p:not(.kicker) { max-width: 650px; }.community-layout { grid-template-columns: 1fr; }.governance-flow article { min-height: 200px; } }
@media (max-width: 900px) {
  .universe-header { grid-template-columns: 1fr auto; }.universe-nav { position: fixed; left: 0; right: 0; top: 68px; height: 38px; padding: 0 var(--gutter); align-items: center; justify-content: center; background: rgba(9, 10, 12, .9); border-block: 1px solid var(--line); }.universe-section { scroll-margin-top: 112px; }.universe-hero { min-height: 760px; }.hero-copy { padding-top: 72px; }.hero-copy h1 { font-size: clamp(55px,14vw,90px); }.world-signal { left: 73%; width: 82vw; opacity: .55; }.question-grid { grid-template-columns: 1fr; }.canon-snapshot { padding-top: 90px; }.canon-snapshot header { display: block; }.question-grid article { min-height: 130px; }.question-grid p { margin-top: 26px; }
  .section-heading { grid-template-columns: 1fr; gap: 20px; }.season-layout { grid-template-columns: 1fr; }.season-rail { display: grid; grid-template-columns: repeat(3,1fr); }.season-tab { min-height: 112px; grid-template-columns: 30px 1fr; padding: 14px; }.season-tab small { grid-column: 1 / -1; }.media-focus { grid-template-columns: 58px 1fr; }.media-visual { min-height: 440px; grid-column: 1 / -1; }.governance-flow { grid-template-columns: repeat(2,1fr); }.governance-flow > i { display: none; }.canon-notes-layout { grid-template-columns: 1fr; }.final-universe { grid-column: auto; }.canon-notes footer { margin-top: 60px; }
}
@media (max-width: 620px) {
  .universe-brand .echo-lockup-product { display: none; }.universe-actions { gap: 7px; }.back-echo { min-width: 88px; padding: 0 8px; font-size: 7px; }.universe-nav { justify-content: flex-start; gap: 18px; overflow-x: auto; }.universe-nav a { font-size: 8px; }.hero-copy h1 { font-size: 52px; line-height: .85; }.hero-copy h1 span { padding-left: .38em; }.zh-title { font-size: 14px; }.hero-lead { max-width: 310px; font-size: 12px; }.world-signal { left: 76%; top: 44%; width: 115vw; }.hero-actions { align-items: flex-start; flex-direction: column; gap: 16px; }.canon-snapshot h2 { font-size: 34px; }
  .story-section,.atlas-section,.media-section,.community-section,.canon-notes { padding-block: 86px; }.season-rail { grid-template-columns: 1fr; }.season-tab { min-height: 85px; }.season-focus { min-height: 620px; padding: 27px 23px; }.story-beats { grid-template-columns: 1fr 1fr; }.season-meta { flex-direction: column; }.atlas-board { grid-template-columns: 1fr; }.atlas-network { min-height: 480px; border-right: 0; border-bottom: 1px solid var(--line); }.atlas-node { width: 112px; }.atlas-detail { min-height: 310px; }.media-switcher { overflow-x: auto; grid-template-columns: repeat(6,minmax(82px,1fr)); border-radius: var(--echo-radius-md); }.media-focus { grid-template-columns: 42px 1fr; }.media-number { padding-left: 15px; }.media-copy { padding: 52px 18px 38px 7px; }.media-copy h3 { font-size: 42px; }.media-visual { min-height: 370px; }.governance-flow { grid-template-columns: 1fr; }.governance-flow article { min-height: 150px; }.protocol-list article { grid-template-columns: 1fr; gap: 10px; }.final-universe { padding: 35px 20px; }.final-universe > div { width: 100%; flex-direction: column; }.canon-notes footer { height: 88px; grid-template-columns: 1fr auto; }.canon-notes footer span { display: none; }
}
/* 触摸设备最小可点区域 44×44（WCAG 2.5.5），与首页同一策略。 */
@media (pointer: coarse) {
  .locale-switch { gap: 0; }
  .locale-switch button { min-width: 44px; min-height: 44px; padding: 0; display: inline-flex; align-items: center; justify-content: center; }
  .universe-nav a { min-height: 44px; display: inline-flex; align-items: center; }
  .atlas-tab, .media-tab, .season-tab, .spoiler-toggle, .back-echo { min-height: 44px; }
}

/* Not-found view (app.js, any path under /universe/ other than the index): the hero carries the 404 copy and nothing else shows. */
body.is-not-found :is(.skip-link, .universe-nav, .future-scroll, .dive-gauge, .memory-dive), body.is-not-found main > section:not(.universe-hero), body.is-not-found .universe-hero > .future-hero-copy:not(.universe-not-found) { display: none; }
body.is-not-found .universe-header { grid-template-columns: 1fr auto; }
/* Phones draw the ring under the first line of the hero; here that line is the 404 title. */
@media (max-width: 600px) { body.is-not-found .universe-not-found .future-hero-title { margin-bottom: 312px; } }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *,*::before,*::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; } }