/* Moky SimLab - landing page styles */
:root {
  color-scheme: dark;
  --bg: #090d0c;
  --bg-2: #0c1210;
  --panel: #0e1513;
  --panel-2: #121b18;
  --line: rgba(170, 255, 210, 0.08);
  --line-2: rgba(170, 255, 210, 0.15);
  --line-3: rgba(170, 255, 210, 0.26);
  --text: #e9f1ec;
  --text-2: #b7c4bd;
  --muted: #84948c;
  --dim: #56655e;
  --green: #3dff8f;
  --green-2: #2bd673;
  --green-soft: rgba(61, 255, 143, 0.12);
  --green-glow: rgba(61, 255, 143, 0.35);
  --amber: #ffb547;
  --red: #ff6b5e;
  --radius: 18px;
  --radius-sm: 10px;
  --gutter: clamp(16px, 4vw, 48px);
  --maxw: 1280px;
  --header-h: 64px;
  --sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;   /* 运营者 10-23 指定 */
  --mono: 'IBM Plex Mono', 'PingFang SC', 'Microsoft YaHei', monospace;
  --ease: cubic-bezier(.2, .7, .2, 1);
}
:lang(zh-TW) { --sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'PingFang TC', 'Microsoft JhengHei', sans-serif; }
:lang(ja) { --sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Yu Gothic', 'Meiryo', sans-serif; }
:lang(ko) { --sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif; }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before { /* faint ambient grid */
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(1200px 600px at 75% -10%, rgba(61, 255, 143, 0.07), transparent 60%),
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 64px 64px;
  mask-image: linear-gradient(to bottom, #000 0, rgba(0,0,0,.35) 900px, rgba(0,0,0,.15) 100%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0, rgba(0,0,0,.35) 900px, rgba(0,0,0,.15) 100%);
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -0.045em; line-height: 1.2; text-wrap: balance; }
p { margin: 0; }
code, pre { font-family: var(--mono); }
::selection { background: var(--green); color: #04110a; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.green { color: var(--green); }
.arr { display: inline-block; transition: transform .25s var(--ease); }

/* eyebrow */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12px/1 var(--mono); letter-spacing: .22em; text-transform: uppercase;   /* 参考图：粗体等宽、宽字距 */
  color: var(--green); margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: currentColor; opacity: .7; }
.eyebrow i { display: none; }
.hero .eyebrow::before { display: none; }
.hero .eyebrow i {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--green);
  box-shadow: 0 0 0 4px var(--green-soft), 0 0 14px var(--green-glow);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 50% { box-shadow: 0 0 0 7px rgba(61,255,143,.04), 0 0 18px var(--green-glow); } }

/* buttons */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 22px; border-radius: 999px;
  font-weight: 600; font-size: 15px; letter-spacing: -0.005em; white-space: nowrap;
  transition: background .2s, color .2s, border-color .2s, transform .2s var(--ease), box-shadow .2s;
}
.button.primary { background: var(--green); color: #03120a; box-shadow: 0 0 0 0 var(--green-glow); }
.button.primary:hover { background: #6bffab; box-shadow: 0 8px 30px -8px var(--green-glow); }
.button.secondary { border: 1px solid var(--line-3); color: var(--text); background: rgba(255,255,255,.02); }
.button.secondary:hover { border-color: var(--green); color: var(--green); }
.button:hover .arr, .text-link:hover .arr, .nav-cta:hover .arr { transform: translate(2px, -2px); }
.button:active { transform: translateY(1px); }
.text-link {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 0;
  font: 500 13px/1.2 var(--mono); letter-spacing: .02em; color: var(--green);
  border-bottom: 1px solid rgba(61,255,143,.35);
}
.text-link:hover { border-color: var(--green); }

/* ───────── header ───────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  display: flex; align-items: center; gap: 28px;
  padding: 0 var(--gutter);
  background: rgba(9, 13, 12, 0.72);
  backdrop-filter: blur(14px) saturate(1.3); -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 9px; font: 600 19px/1 var(--sans); letter-spacing: -0.02em; white-space: nowrap; }
.brand-icon { color: var(--green); font-size: 23px; text-shadow: 0 0 12px var(--green-glow); }
.brand-divider { width: 1px; height: 16px; background: var(--line-3); margin: 0 2px; }
.brand b { font-weight: 500; color: var(--text); }
footer .brand { font-size: 16px; } footer .brand-icon { font-size: 18px; }   /* 运营者 10-23：顶部 logo 放大，页脚保持原大小 */
.brand > a { display: inline-flex; align-items: center; gap: 8px; color: inherit; text-decoration: none; }
.brand-moky { transition: color .2s; } .brand-moky:hover { color: var(--green); }
.site-header nav { display: flex; gap: 4px; margin-left: 12px; }
.site-header nav a {
  padding: 8px 12px; border-radius: 8px; font-size: 14px; color: var(--text-2); white-space: nowrap;
  transition: color .2s, background .2s;
}
.site-header nav a:hover, .site-header nav a.active { color: var(--text); background: rgba(255,255,255,.04); }
.site-header nav a.active { color: var(--green); }
.nav-cta-mobile { display: none; }
.header-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 16px;
  border-radius: 999px; border: 1px solid rgba(61,255,143,.45); color: var(--green);
  font-size: 14px; font-weight: 500; white-space: nowrap; transition: background .2s, color .2s;
}
.nav-cta:hover { background: var(--green); color: #03120a; }

/* language select: compact native dropdown, keyboard-friendly */
.lang-select { position: relative; display: inline-flex; align-items: center; }
.lang-globe { position: absolute; left: 11px; color: var(--green); font-size: 13px; pointer-events: none; }
.lang-select select {
  appearance: none; -webkit-appearance: none;
  height: 38px; padding: 0 30px 0 30px;
  border-radius: 999px; border: 1px solid var(--line-2); background: rgba(255,255,255,.03);
  color: var(--text-2); font: 500 12px/1 var(--mono); letter-spacing: .04em; cursor: pointer;
  text-overflow: ellipsis;
  transition: border-color .2s, color .2s;
}
.lang-select::after {
  content: ""; position: absolute; right: 12px; top: 50%; width: 6px; height: 6px; margin-top: -5px;
  border-right: 1.5px solid var(--muted); border-bottom: 1.5px solid var(--muted); transform: rotate(45deg); pointer-events: none;
}
.lang-select select:hover, .lang-select select:focus-visible { border-color: var(--green); color: var(--text); }
.lang-select select:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
.lang-select option { background: #0e1513; color: var(--text); }

.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line-2); position: relative; }
.nav-toggle span { position: absolute; left: 11px; right: 11px; height: 1.5px; background: var(--text); transition: transform .25s var(--ease), top .25s var(--ease); }
.nav-toggle span:first-child { top: 15px; }
.nav-toggle span:last-child { top: 23px; }
.site-header.open .nav-toggle span:first-child { top: 19px; transform: rotate(45deg); }
.site-header.open .nav-toggle span:last-child { top: 19px; transform: rotate(-45deg); }

/* ───────── layout ───────── */
main > section, .principles { width: 100%; max-width: calc(var(--maxw) + var(--gutter) * 2); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.section { padding-top: clamp(80px, 11vw, 150px); }
.section h2 { font-size: clamp(34px, 4.6vw, 60px); }
.section h2 span, .closing h2 span, h1 span { color: var(--green); }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin-bottom: 48px; }
.section-heading > p { max-width: 380px; color: var(--muted); font-size: 15px; text-align: right; }

/* ───────── hero ───────── */
.hero {
  display: grid; grid-template-columns: minmax(0, 5.6fr) minmax(0, 6fr);   /* 运营者 10-23：左侧文字栏略加宽（原 5 : 6） */ gap: clamp(32px, 4vw, 64px);
  align-items: center; padding-top: clamp(40px, 6vw, 72px);
  min-height: calc(100vh - var(--header-h)); min-height: calc(100svh - var(--header-h));
  grid-template-rows: 1fr auto;
}
.hero h1 { font-size: clamp(45px, 5.3vw, 78px); font-weight: 500; letter-spacing: -4px; line-height: 1.06; margin: 26px 0 24px; }   /* 运营者 10-23：字号 / 字距 / 行高照参考样式 */
@media (max-width: 1000px) { .hero h1 { letter-spacing: -2.5px; } }
.hero-cn { margin-top: 26px; font-size: clamp(20px, 2.1vw, 30px); color: var(--text); font-weight: 500; letter-spacing: .05em; }   /* 参考样式：中文副标题字距放开 1px */
.intro { margin-top: 14px; max-width: 540px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-foot { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 34px; font: 500 12px/1.4 var(--mono); color: var(--muted); letter-spacing: .02em; }
.hero-foot span { display: inline-flex; align-items: center; gap: 8px; }
.hero-foot span::before { content: "✓"; color: var(--green); }

.world-shell {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line-2);
  background:
    radial-gradient(70% 60% at 50% 55%, rgba(61,255,143,.07), transparent 70%),
    linear-gradient(180deg, #0b1210, #070a09);
  aspect-ratio: 1.08 / 1; min-height: 420px; max-height: 680px;
  box-shadow: 0 40px 120px -40px rgba(61,255,143,.18), inset 0 1px 0 rgba(255,255,255,.04);
}
.world-shell::after { /* corner ticks */
  content: ""; position: absolute; inset: 10px; pointer-events: none;
  background:
    linear-gradient(var(--line-3), var(--line-3)) left top / 14px 1px no-repeat,
    linear-gradient(var(--line-3), var(--line-3)) left top / 1px 14px no-repeat,
    linear-gradient(var(--line-3), var(--line-3)) right top / 14px 1px no-repeat,
    linear-gradient(var(--line-3), var(--line-3)) right top / 1px 14px no-repeat,
    linear-gradient(var(--line-3), var(--line-3)) left bottom / 14px 1px no-repeat,
    linear-gradient(var(--line-3), var(--line-3)) left bottom / 1px 14px no-repeat,
    linear-gradient(var(--line-3), var(--line-3)) right bottom / 14px 1px no-repeat,
    linear-gradient(var(--line-3), var(--line-3)) right bottom / 1px 14px no-repeat;
}
#world { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.world-top, .world-bottom {
  position: absolute; left: 0; right: 0; z-index: 2;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px 22px; font: 500 11px/1.2 var(--mono); letter-spacing: .1em; color: var(--text-2);
}
.world-top { top: 0; background: linear-gradient(180deg, rgba(7,10,9,.85), transparent); }
.world-top span:first-child { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.world-top i { width: 6px; height: 6px; border-radius: 50%; background: var(--red); box-shadow: 0 0 10px var(--red); animation: blink 1.6s steps(2) infinite; }
@keyframes blink { 50% { opacity: .25; } }
.demo { font: 500 10.5px/1.3 var(--mono); letter-spacing: .06em; color: var(--muted); border: 1px solid var(--line-2); border-radius: 999px; padding: 4px 9px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.world-bottom { bottom: 0; justify-content: flex-start; background: linear-gradient(0deg, rgba(7,10,9,.9), transparent); }
#heroPlay {
  width: 32px; height: 32px; flex: none; border-radius: 50%; border: 1px solid var(--line-3);
  display: grid; place-items: center; font-size: 12px; color: var(--green); transition: border-color .2s, background .2s;
}
#heroPlay:hover { border-color: var(--green); background: var(--green-soft); }
#worldStatus { color: var(--green); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#worldStatus.warn { color: var(--amber); }
#worldStatus.idle { color: var(--muted); }
.frame { margin-left: auto; color: var(--muted); white-space: nowrap; }
.frame b { color: var(--text); font-weight: 500; font-variant-numeric: tabular-nums; }
.world-label {
  position: absolute; left: 0; top: 0; z-index: 2; pointer-events: none;
  font: 500 10.5px/1.3 var(--mono); letter-spacing: .08em; color: var(--text); white-space: nowrap;
  padding: 6px 9px; border-radius: 6px; background: rgba(7,10,9,.72); border: 1px solid var(--line-2);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  transform: translate(-200px, -200px); will-change: transform;
}
.world-label small { display: block; font-weight: 500; font-size: 9.5px; color: var(--muted); letter-spacing: .1em; margin-top: 2px; }
.label-a { border-color: rgba(61,255,143,.4); }
.label-b { border-color: rgba(255,181,71,.35); color: var(--amber); }
.health { width: 96px; height: 4px; margin-top: 5px; border-radius: 2px; background: rgba(255,255,255,.08); overflow: hidden; }
.health span { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, var(--red), var(--amber)); border-radius: inherit; transform-origin: left; transition: width .2s linear; }
.coord { position: absolute; left: 22px; bottom: 60px; z-index: 2; font: 500 10.5px/1.6 var(--mono); color: var(--muted); letter-spacing: .08em; font-variant-numeric: tabular-nums; }
.coord span { color: var(--text-2); }

.hero-index {
  grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 16px;
  padding: 26px 0 28px; border-top: 1px solid var(--line); margin-top: 8px;
  font: 500 11px/1 var(--mono); letter-spacing: .14em; color: var(--dim);
}

/* ───────── principles ───────── */
.principles {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding-top: 26px; padding-bottom: 26px;
}
.principles > span:first-child { font: 500 11px/1 var(--mono); letter-spacing: .14em; color: var(--muted); margin-right: 14px; }
.principles > div {
  font: 500 13px/1 var(--mono); color: var(--text-2); padding: 10px 14px; border-radius: 999px;
  border: 1px solid var(--line-2); background: rgba(255,255,255,.015);
}
.principles .all { margin-left: auto; color: var(--green); font-size: 14px; font-weight: 500; }

/* ───────── value ───────── */
.value { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.section-intro { position: sticky; top: calc(var(--header-h) + 40px); }
.value-items { border-top: 1px solid var(--line-2); }
.value-items article { display: grid; grid-template-columns: 64px 1fr; gap: 20px; padding: 34px 0; border-bottom: 1px solid var(--line-2); transition: background .3s; }
.value-items .num { font: 500 13px/1.8 var(--mono); color: var(--green); }
.value-items h3 { font-size: clamp(20px, 2vw, 24px); margin-bottom: 10px; }
.value-items p { color: var(--muted); max-width: 560px; }

/* ───────── worlds ───────── */
.world-tabs { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line-2); border-radius: 14px 14px 0 0; overflow: hidden; }
.world-tabs button {
  position: relative; text-align: left; padding: 18px 20px; font: 500 12px/1.3 var(--mono); color: var(--dim); letter-spacing: .06em;
  border-right: 1px solid var(--line-2); background: rgba(255,255,255,.01); transition: color .2s, background .2s;
}
.world-tabs button:last-child { border-right: 0; }
.world-tabs button span { display: block; margin-top: 6px; font: 600 15px/1.3 var(--sans); color: var(--text-2); letter-spacing: -0.01em; }
.world-tabs button::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--green); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease); }
.world-tabs button:hover { background: rgba(255,255,255,.03); }
.world-tabs button[aria-selected="true"] { color: var(--green); background: var(--green-soft); }
.world-tabs button[aria-selected="true"] span { color: var(--text); }
.world-tabs button[aria-selected="true"]::after { transform: scaleX(1); }
.scenario {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  border: 1px solid var(--line-2); border-top: 0; border-radius: 0 0 14px 14px; overflow: hidden; background: var(--bg-2);
}
.scenario-art {
  position: relative; min-height: 440px; display: grid; place-items: center; border-right: 1px solid var(--line-2);
  background:
    radial-gradient(closest-side, rgba(61,255,143,.08), transparent),
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 32px 32px;
}
.radar { position: relative; width: min(340px, 72%); aspect-ratio: 1; }
.radar-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(61,255,143,.22); }
.radar-ring.r1 { inset: 0; }
.radar-ring.r2 { inset: 17%; border-style: dashed; border-color: rgba(61,255,143,.16); }
.radar-ring.r3 { inset: 34%; }
.radar-sweep {
  position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(61,255,143,.28), rgba(61,255,143,0) 70deg, transparent 360deg);
  animation: sweep 4.5s linear infinite;
  mask-image: radial-gradient(circle, #000 69%, transparent 70.5%);
  -webkit-mask-image: radial-gradient(circle, #000 69%, transparent 70.5%);
}
@keyframes sweep { to { transform: rotate(360deg); } }
.crosshair { position: absolute; inset: 0; }
.crosshair::before, .crosshair::after { content: ""; position: absolute; background: rgba(61,255,143,.16); }
.crosshair::before { left: 50%; top: -8%; bottom: -8%; width: 1px; }
.crosshair::after { top: 50%; left: -8%; right: -8%; height: 1px; }
.sentinel {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  font-size: clamp(44px, 5vw, 64px); line-height: 1; color: var(--green);
  text-shadow: 0 0 24px var(--green-glow), 0 0 60px rgba(61,255,143,.2);
  transition: opacity .25s, transform .4s var(--ease);
}
.sentinel.swap { opacity: 0; transform: translate(-50%, -50%) scale(.7) rotate(-20deg); }
.radar-dot {
  position: absolute; left: var(--x, 50%); top: var(--y, 50%); width: 9px; height: 9px; margin: -4.5px 0 0 -4.5px; border-radius: 50%;
  background: var(--c, var(--green)); box-shadow: 0 0 0 4px rgba(61,255,143,.12), 0 0 12px var(--c, var(--green));
  transition: left .8s var(--ease), top .8s var(--ease), background .4s;
  animation: ping 2.6s ease-out infinite;
}
.radar-dot.d2 { animation-delay: .8s; }
.radar-dot.d3 { animation-delay: 1.6s; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(61,255,143,.45), 0 0 12px var(--c, var(--green)); } 70%, 100% { box-shadow: 0 0 0 14px rgba(61,255,143,0), 0 0 12px var(--c, var(--green)); } }
.art-caption, .art-tag { position: absolute; font: 500 10.5px/1 var(--mono); letter-spacing: .12em; color: var(--muted); }
.art-caption { left: 22px; bottom: 22px; }
.art-tag { right: 22px; top: 22px; padding: 5px 9px; border: 1px solid var(--line-2); border-radius: 999px; }
.scenario-copy { padding: clamp(28px, 4vw, 56px); display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }
.scenario-copy > * { transition: opacity .3s, transform .3s var(--ease); }
.scenario.swapping .scenario-copy > * { opacity: 0; transform: translateY(6px); }
.pill { font: 500 11px/1 var(--mono); letter-spacing: .12em; color: var(--green); padding: 7px 11px; border-radius: 999px; background: var(--green-soft); border: 1px solid rgba(61,255,143,.3); }
.scenario-copy h3 { margin-top: 22px; font-size: clamp(26px, 2.8vw, 38px); }
.scenario-copy p { margin-top: 18px; color: var(--muted); max-width: 520px; }
.scenario-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; width: 100%; margin: 28px 0; background: var(--line-2); border: 1px solid var(--line-2); border-radius: 12px; overflow: hidden; }
.scenario-metrics div { background: var(--panel); padding: 16px 18px; }
.scenario-metrics small { display: block; font: 500 11px/1.3 var(--mono); letter-spacing: .08em; color: var(--dim); text-transform: uppercase; margin-bottom: 8px; }
.scenario-metrics span { font-size: 14px; color: var(--text); line-height: 1.5; }

/* ───────── protocol ───────── */
.flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: stretch; gap: 0; }
.flow article {
  position: relative; padding: 30px 28px 32px; border-radius: 16px; border: 1px solid var(--line-2);
  background: linear-gradient(180deg, var(--panel-2), var(--panel)); transition: border-color .3s, transform .3s var(--ease);
}
.flow article:hover { border-color: rgba(61,255,143,.4); transform: translateY(-3px); }
.flow-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: var(--green-soft); color: var(--green); font-size: 20px; border: 1px solid rgba(61,255,143,.25); }
.flow small { display: block; margin-top: 26px; font: 500 11px/1 var(--mono); letter-spacing: .14em; color: var(--muted); }
.flow h3 { margin-top: 12px; font-size: 21px; }
.flow p { margin-top: 10px; color: var(--muted); font-size: 15px; }
.flow-arrow { display: grid; place-items: center; padding: 0 14px; color: var(--green); font: 400 20px/1 var(--mono); opacity: .7; }
.protocol-note {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap; margin-top: 22px; padding: 18px 22px;
  border-radius: 12px; border: 1px dashed var(--line-3); background: rgba(61,255,143,.03);
}
.protocol-note span { font: 500 12px/1.4 var(--mono); letter-spacing: .08em; color: var(--green); }
.protocol-note p { color: var(--muted); font-size: 14px; flex: 1 1 280px; }

/* ───────── replay ───────── */
.replay-grid { display: grid; grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr); gap: 18px; }
.replay-console, .score { border: 1px solid var(--line-2); border-radius: 16px; background: var(--panel); }
.replay-console { display: flex; flex-direction: column; overflow: hidden; }
.console-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--line-2); font: 500 12px/1.2 var(--mono); color: var(--muted); background: rgba(255,255,255,.015); }
.console-bar > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.event-head { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding: 22px 22px 6px; }
.event-head > span:first-child { font: 500 12px/1 var(--mono); color: var(--muted); letter-spacing: .1em; }
.event-head b { color: var(--green); font-weight: 500; font-variant-numeric: tabular-nums; }
#eventName { font-size: 18px; font-weight: 500; letter-spacing: -0.01em; }
.trace { display: grid; gap: 10px; padding: 16px 22px 22px; flex: 1; }
.trace > div {
  display: grid; grid-template-columns: 28px 120px minmax(0, 1fr); align-items: start; gap: 14px;
  padding: 14px 16px; border-radius: 10px; background: var(--bg-2); border: 1px solid var(--line);
}
.trace > div > span { font: 500 11px/1.7 var(--mono); color: var(--dim); }
.trace b { font: 500 13px/1.7 var(--mono); color: var(--text); }
.trace code { font-size: 13px; line-height: 1.7; color: var(--text-2); overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.trace code .k { color: var(--muted); }
.trace code .v { color: var(--green); }
.trace code .bad { color: var(--red); }
.trace code.flash { animation: flash .5s ease-out; }
@keyframes flash { from { background: rgba(61,255,143,.12); } to { background: transparent; } }
.timeline { display: flex; align-items: center; gap: 14px; padding: 16px 22px 6px; border-top: 1px solid var(--line-2); }
#replayPlay { width: 38px; height: 38px; flex: none; border-radius: 50%; background: var(--green); color: #03120a; font-size: 13px; display: grid; place-items: center; transition: background .2s; }
#replayPlay:hover { background: #6bffab; }
.scrub-wrap { position: relative; flex: 1; min-width: 0; display: flex; align-items: center; height: 30px; }
#timeLabel { font: 500 12px/1 var(--mono); color: var(--muted); min-width: 72px; text-align: right; font-variant-numeric: tabular-nums; }
#scrub { -webkit-appearance: none; appearance: none; width: 100%; height: 30px; background: transparent; cursor: pointer; margin: 0; position: relative; z-index: 1; }
#scrub::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: linear-gradient(90deg, var(--green) var(--p, 50%), rgba(255,255,255,.1) var(--p, 50%)); }
#scrub::-moz-range-track { height: 4px; border-radius: 2px; background: rgba(255,255,255,.1); }
#scrub::-moz-range-progress { height: 4px; border-radius: 2px; background: var(--green); }
#scrub::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; margin-top: -6px; border-radius: 50%; background: var(--bg); border: 2px solid var(--green); box-shadow: 0 0 12px var(--green-glow); }
#scrub::-moz-range-thumb { width: 12px; height: 12px; border-radius: 50%; background: var(--bg); border: 2px solid var(--green); box-shadow: 0 0 12px var(--green-glow); }
#scrub:focus-visible { outline: none; }
#scrub:focus-visible::-webkit-slider-thumb { outline: 2px solid var(--green); outline-offset: 3px; }
.scrub-marks { position: absolute; left: 0; right: 0; top: 50%; height: 12px; margin-top: 4px; pointer-events: none; }
.scrub-marks i { position: absolute; top: 4px; width: 1px; height: 6px; background: var(--line-3); }
.timeline-legend { display: flex; padding: 4px 22px 20px; margin-left: 52px; margin-right: 86px; font: 500 11px/1.3 var(--mono); color: var(--dim); letter-spacing: .04em; }
.timeline-legend span { flex: var(--w, 1) 1 0; min-width: 0; padding-top: 6px; border-top: 2px solid var(--line-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; transition: color .2s, border-color .2s; }
.timeline-legend span + span { margin-left: 3px; }
.timeline-legend span.on { color: var(--green); border-color: var(--green); }

.score { padding: 24px; display: flex; flex-direction: column; gap: 14px; }
.score-title { display: flex; justify-content: space-between; align-items: center; font: 500 11px/1 var(--mono); letter-spacing: .14em; color: var(--muted); }
.score-title span { font-weight: 500; letter-spacing: .04em; padding: 4px 8px; border-radius: 999px; border: 1px solid var(--line-2); }
.score-big { display: flex; align-items: flex-end; gap: 12px; padding: 6px 0 10px; border-bottom: 1px solid var(--line-2); }
.score-big b { font: 500 76px/0.9 var(--sans); letter-spacing: -0.05em; color: var(--green); text-shadow: 0 0 40px rgba(61,255,143,.25); font-variant-numeric: tabular-nums; }
.score-big > span { font: 500 12px/1.5 var(--mono); color: var(--muted); padding-bottom: 6px; }
.score-row { display: grid; grid-template-columns: 1fr auto; gap: 7px 12px; font-size: 14px; color: var(--text-2); }
.score-row b { font: 500 14px/1 var(--mono); color: var(--text); }
.score-row i { grid-column: 1 / -1; height: 4px; border-radius: 2px; background: rgba(255,255,255,.07); position: relative; overflow: hidden; }
.score-row i::after { content: ""; position: absolute; inset: 0; width: var(--v); background: linear-gradient(90deg, var(--green-2), var(--green)); border-radius: inherit; transform-origin: left; transform: scaleX(0); transition: transform 1.1s var(--ease); }
.score.in .score-row i::after { transform: scaleX(1); }
.latency { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 10px; background: var(--bg-2); border: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.latency b { font: 500 20px/1 var(--mono); color: var(--text); white-space: nowrap; font-variant-numeric: tabular-nums; transition: color .2s; }
.latency b.slow { color: var(--amber); }
.latency small { font-size: 12px; color: var(--muted); font-weight: 500; }
.score > p { font-size: 12.5px; line-height: 1.6; color: var(--dim); }
.score .text-link { align-self: flex-start; margin-top: auto; }

/* ───────── developers ───────── */
.developers { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 5vw, 80px); align-items: center; }
.developer-copy > p { margin-top: 22px; color: var(--muted); max-width: 480px; }
.developer-copy ul { list-style: none; padding: 0; margin: 26px 0 32px; display: grid; gap: 12px; }
.developer-copy li { display: flex; gap: 12px; align-items: baseline; color: var(--text-2); font-size: 15px; }
.developer-copy li::before { content: "→"; font-family: var(--mono); color: var(--green); }
.code-note { display: block; margin-top: 14px; font: 500 12px/1.5 var(--mono); color: var(--dim); }
.code-window { border-radius: 16px; border: 1px solid var(--line-2); background: #070b0a; overflow: hidden; box-shadow: 0 30px 90px -40px rgba(0,0,0,.9), 0 0 0 1px rgba(0,0,0,.4); min-width: 0; }
.code-header { display: flex; align-items: center; gap: 14px; padding: 10px 14px; border-bottom: 1px solid var(--line-2); background: var(--panel); }
.dots { display: inline-flex; gap: 6px; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.1); }
.code-tabs { display: flex; gap: 4px; }
.code-tabs button { padding: 7px 12px; border-radius: 8px; font: 500 12.5px/1 var(--mono); color: var(--muted); transition: color .2s, background .2s; }
.code-tabs button:hover { color: var(--text); }
.code-tabs button[aria-selected="true"] { color: var(--green); background: var(--green-soft); }
#copy { margin-left: auto; padding: 7px 12px; border-radius: 8px; border: 1px solid var(--line-2); font: 500 12px/1 var(--mono); color: var(--text-2); white-space: nowrap; transition: border-color .2s, color .2s; }
#copy:hover, #copy.done { border-color: var(--green); color: var(--green); }
.code-window pre { margin: 0; padding: 20px 22px; height: 440px; overflow: auto; font-size: 13px; line-height: 1.7; color: #cfd9d3; tab-size: 4; scrollbar-width: thin; scrollbar-color: var(--line-3) transparent; }
.code-window pre:focus-visible { outline-offset: -2px; }
#code { display: block; min-width: max-content; }
#code .ln { display: inline-block; width: 2.4em; margin-right: 1em; text-align: right; color: var(--dim); user-select: none; -webkit-user-select: none; opacity: .6; }
.tk-c { color: #5e7168; font-style: italic; }
.tk-s { color: #b8f5a0; }
.tk-k { color: #ff9e64; }
.tk-n { color: #f7d36b; }
.tk-f { color: var(--green); }
.tk-b { color: #7ccfff; }
.tk-p { color: #8fd8ff; }
.tk-d { color: #c49cff; }
.code-footer { display: flex; align-items: center; gap: 10px; padding: 12px 18px; border-top: 1px solid var(--line-2); font: 500 11px/1 var(--mono); letter-spacing: .14em; color: var(--muted); background: var(--panel); }
.code-footer i { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); }

/* ───────── closing ───────── */
.closing {
  position: relative; overflow: hidden; text-align: center;
  margin-top: clamp(80px, 11vw, 150px); padding-top: clamp(80px, 10vw, 140px) !important; padding-bottom: clamp(80px, 10vw, 140px) !important;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  max-width: none !important;
}
.closing > * { position: relative; z-index: 1; }
.closing .eyebrow::before { display: none; }
.closing h2 { font-size: clamp(34px, 5.4vw, 72px); letter-spacing: -0.04em; max-width: 1000px; margin: 0 auto; }
.closing p { margin: 22px auto 36px; color: var(--muted); font-size: 17px; }
.closing-grid {
  position: absolute !important; inset: 0; z-index: 0 !important; pointer-events: none;
  background:
    radial-gradient(50% 70% at 50% 100%, rgba(61,255,143,.16), transparent 70%),
    linear-gradient(rgba(61,255,143,.09) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(90deg, rgba(61,255,143,.09) 1px, transparent 1px) 0 0 / 48px 48px;
  mask-image: radial-gradient(70% 90% at 50% 100%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(70% 90% at 50% 100%, #000, transparent 75%);
}

/* ───────── footer ───────── */
footer {
  max-width: calc(var(--maxw) + var(--gutter) * 2); margin: 0 auto; padding: 36px var(--gutter) 44px;
  display: flex; align-items: center; flex-wrap: nowrap; gap: 14px 28px; color: var(--muted); font-size: 14px;
}
.footer-links { flex-wrap: nowrap; white-space: nowrap; }
.footer-tag { color: var(--muted); }
.footer-links { margin-left: auto; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 22px; }
.footer-links a, .footer-links button { color: var(--text-2); font-size: 14px; padding: 4px 0; transition: color .2s; }
.footer-links a:hover, .footer-links button:hover { color: var(--green); }
.back-moky { font-family: var(--mono); font-size: 13px !important; padding: 6px 12px !important; border: 1px solid var(--line-2); border-radius: 999px; }
footer small { flex: none; font: 500 11.5px/1.4 var(--mono); color: var(--dim); letter-spacing: .04em; white-space: nowrap; }
/* 运营者 10-23：版权居中（页脚一行：左 logo＋介绍，中 版权，右 链接）；屏幕不够宽时回到正常排列，避免压到两边 */
@media (min-width: 1200px) { footer { position: relative; } footer small { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); margin-top: -4px; } }

/* ───────── dialog & toast ───────── */
dialog {
  width: min(560px, calc(100vw - 32px)); padding: 36px 34px 30px; border-radius: 18px;
  border: 1px solid var(--line-3); background: var(--panel); color: var(--text);
  box-shadow: 0 40px 120px -20px rgba(0,0,0,.8), 0 0 0 1px rgba(61,255,143,.08);
}
dialog[open] { animation: pop .3s var(--ease); }
@keyframes pop { from { opacity: 0; transform: translateY(10px) scale(.98); } }
dialog::backdrop { background: rgba(3, 6, 5, 0.7); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
dialog h2 { font-size: 26px; margin-bottom: 16px; }
dialog p { color: var(--muted); font-size: 15px; margin-bottom: 12px; }
dialog .close { position: absolute; right: 14px; top: 14px; width: 36px; height: 36px; border-radius: 50%; font-size: 22px; line-height: 1; color: var(--muted); display: grid; place-items: center; }
dialog .close:hover { color: var(--text); background: rgba(255,255,255,.06); }
dialog .close-bottom { margin-top: 12px; }
.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 100; max-width: calc(100vw - 32px);
  transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  padding: 12px 18px; border-radius: 12px; background: #0f1a16; border: 1px solid rgba(61,255,143,.4);
  color: var(--text); font-size: 14px; box-shadow: 0 20px 50px -10px rgba(0,0,0,.7);
  transition: opacity .25s, transform .3s var(--ease);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast::before { content: "◈ "; color: var(--green); }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ───────── responsive ───────── */
@media (max-width: 1100px) {
  .site-header nav a { padding: 8px 9px; font-size: 13.5px; }
}
@media (max-width: 980px) {
  .site-header { gap: 12px; }
  .nav-toggle { display: inline-block; }
  .site-header nav {
    position: absolute; left: 0; right: 0; top: var(--header-h); margin: 0;
    flex-direction: column; gap: 0; padding: 8px var(--gutter) 20px;
    background: rgba(9, 13, 12, 0.97); border-bottom: 1px solid var(--line-2);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    visibility: hidden; opacity: 0; transform: translateY(-8px); transition: opacity .2s, transform .25s var(--ease), visibility 0s .25s;
  }
  .site-header.open nav { visibility: visible; opacity: 1; transform: none; transition: opacity .2s, transform .25s var(--ease); }
  .site-header nav a { padding: 15px 4px; font-size: 16px; border-radius: 0; border-bottom: 1px solid var(--line); }
  .site-header nav a:hover { background: none; }
  .hero { grid-template-columns: 1fr; min-height: 0; grid-template-rows: auto; }
  .world-shell { max-height: none; aspect-ratio: 1 / 1; }
  .value, .developers { grid-template-columns: 1fr; }
  .section-intro { position: static; }
  .scenario { grid-template-columns: 1fr; }
  .scenario-art { min-height: 340px; border-right: 0; border-bottom: 1px solid var(--line-2); }
  .flow { grid-template-columns: 1fr; }
  .flow-arrow { transform: rotate(90deg); padding: 10px 0; }
  .replay-grid { grid-template-columns: 1fr; }
  .section-heading { flex-direction: column; align-items: flex-start; }
  .section-heading > p { text-align: left; }
}
@media (max-width: 640px) {
  :root { --header-h: 58px; }
  .nav-cta { display: none; }
  .site-header nav .nav-cta-mobile {
    display: flex; justify-content: center; gap: 8px; margin-top: 16px; padding: 14px; border: 0; border-radius: 999px;
    background: var(--green); color: #03120a; font-weight: 600;
  }
  .lang-select select { padding: 0 26px 0 12px; font-size: 11.5px; letter-spacing: 0; }
  .lang-globe { display: none; }
  .brand-divider { display: none; }
  .hero { padding-top: 28px; gap: 28px; }
  .hero h1 { font-size: 57px; letter-spacing: -3px; }
  .hero-actions .button { flex: 1 1 100%; }
  .world-shell { aspect-ratio: auto; height: 420px; min-height: 0; border-radius: 14px; }
  .world-top, .world-bottom { padding: 12px 14px; font-size: 10px; }
  .world-top .demo { max-width: 46%; }
  .coord { left: 14px; bottom: 54px; }
  .hero-index { font-size: 10px; letter-spacing: .1em; }
  .principles > span:first-child { flex-basis: 100%; margin-bottom: 4px; }
  .principles .all { margin-left: 0; flex-basis: 100%; margin-top: 6px; }
  .world-tabs { grid-template-columns: 1fr 1fr; border-radius: 12px 12px 0 0; }
  .world-tabs button { padding: 14px; border-bottom: 1px solid var(--line-2); }
  .world-tabs button:nth-child(2n) { border-right: 0; }
  .world-tabs button span { font-size: 14px; }
  .scenario-metrics { grid-template-columns: 1fr; }
  .scenario-art { min-height: 300px; }
  .trace > div { grid-template-columns: 22px minmax(0, 1fr); gap: 4px 10px; }
  .trace > div code { grid-column: 2; }
  .timeline { gap: 10px; padding: 14px 16px 4px; }
  #timeLabel { min-width: 60px; font-size: 11px; }
  .timeline-legend { margin-left: 48px; margin-right: 70px; padding-left: 16px; padding-right: 16px; font-size: 10px; }
  .timeline-legend { margin: 0; padding: 4px 16px 18px; }
  .event-head, .trace { padding-left: 16px; padding-right: 16px; }
  .score-big b { font-size: 64px; }
  .code-window pre { height: 380px; font-size: 12px; padding: 16px; }
  .dots { display: none; }
  .closing h2 br { display: none; }
  footer { flex-direction: column; align-items: flex-start; }
  .footer-links { margin-left: 0; }
  dialog { padding: 30px 22px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* waitlist 对话框（运营者 10-23）：沿用 about 对话框的面板，邮箱输入 ＋ 主按钮一行，手机上叠成两行 */
.wl-dialog .eyebrow { margin-bottom: 18px; }
.wl-form { display: flex; gap: 10px; margin-top: 22px; }
.wl-form input[type=email] { flex: 1; min-width: 0; height: 48px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--line-3); background: rgba(255,255,255,.03); color: var(--text); font: 400 15px var(--sans); outline: none; transition: border-color .2s, box-shadow .2s; }
.wl-form input[type=email]::placeholder { color: var(--muted); opacity: .7; }
.wl-form input[type=email]:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(61,255,143,.15); }
.wl-form .button { flex: none; height: 48px; white-space: nowrap; }
.wl-form .button[disabled] { opacity: .6; cursor: progress; }
.wl-form.done input[type=email] { border-color: rgba(61,255,143,.5); }
.wl-hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.wl-msg { min-height: 22px; margin: 12px 0 0; font: 400 13px/1.5 var(--mono); }
.wl-msg.ok { color: var(--green); } .wl-msg.err { color: #ff8a7a; }
.wl-note { display: block; margin-top: 6px; color: var(--muted); font: 400 12px/1.5 var(--mono); opacity: .8; }
@media (max-width: 560px) { .wl-form { flex-direction: column; } .wl-form .button { width: 100%; justify-content: center; } }

/* 弹窗过渡（运营者 10-23：waitlist 弹出不要太闪）：打开时面板淡入上浮、遮罩慢慢变暗；关闭时反着走完再收起 */
dialog[open] { animation: dlg-in .32s cubic-bezier(.2, .8, .2, 1) both; }
dialog[open]::backdrop { animation: dlg-fade .32s ease both; }
dialog[open].dlg-leaving { animation: dlg-out .2s ease forwards; pointer-events: none; }
dialog[open].dlg-leaving::backdrop { animation: dlg-fade-out .2s ease forwards; }
@keyframes dlg-in { from { opacity: 0; transform: translateY(14px) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes dlg-out { from { opacity: 1; } to { opacity: 0; } }   /* 收起只淡出，不缩放（缩放 ＋ 遮罩模糊会看着变形） */
@keyframes dlg-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes dlg-fade-out { from { opacity: 1; } to { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { dialog[open], dialog[open]::backdrop, dialog.closing, dialog.closing::backdrop { animation: none; } }

.wl-dialog:focus, .wl-dialog:focus-visible { outline: none; }
.wl-form input[type=email].invalid { border-color: #ff8a7a; box-shadow: 0 0 0 3px rgba(255,138,122,.14); }
.wl-form input[type=email].valid { border-color: rgba(61,255,143,.55); }