:root {
  color-scheme: dark;
  --ink: #050914;
  --ink-soft: #091222;
  --panel: rgba(8, 17, 33, 0.86);
  --panel-strong: #091425;
  --line: rgba(125, 174, 255, 0.2);
  --line-bright: #78b7ff;
  --blue: #6eabff;
  --blue-soft: #96c8ff;
  --indigo: #6c6eff;
  --red: #ff6f77;
  --white: #f3f5f8;
  --muted: #8e9bb1;
  --muted-strong: #b4becd;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 75% 5%, rgba(40, 90, 180, 0.13), transparent 28rem),
    var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  color: #06101d;
  background: var(--blue-soft);
  border-radius: 0.5rem;
  transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 50%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: min(100% - 3rem, 1440px);
  height: 92px;
  transform: translateX(-50%);
}
.brand { display: inline-flex; align-items: center; gap: 0.65rem; width: max-content; font-size: 1.5rem; font-weight: 650; letter-spacing: 0.01em; }
.brand-mark {
  display: grid;
  width: 3.2rem;
  height: 2.25rem;
  place-items: center;
  color: transparent;
  background: linear-gradient(105deg, #66c2ff, #6977ff 62%, #a384ff);
  background-clip: text;
  font-size: 3.45rem;
  font-weight: 500;
  line-height: 0.75;
  filter: drop-shadow(0 0 11px rgba(97, 154, 255, 0.2));
}
.desktop-nav { display: flex; align-items: center; gap: clamp(1.35rem, 2.35vw, 2.8rem); color: #a9b3c4; font-size: 0.95rem; }
.desktop-nav a, .language-toggle, footer a { transition: color 180ms ease; }
.desktop-nav a:hover, .desktop-nav a:focus-visible, .language-toggle:hover, .language-toggle:focus-visible, footer a:hover, footer a:focus-visible { color: #fff; }
.language-toggle { padding: 0; border: 0; color: var(--blue-soft); background: transparent; cursor: pointer; font-size: inherit; }
.github-link {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 42px;
  padding: 0 1rem;
  border: 1px solid rgba(157, 185, 229, 0.34);
  border-radius: 0.75rem;
  font-weight: 600;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}
.github-link:hover, .github-link:focus-visible { border-color: var(--blue); background: rgba(90, 147, 245, 0.08); transform: translateY(-1px); }
.github-dot { width: 0.8rem; height: 0.8rem; border: 2px solid currentColor; border-radius: 50%; box-shadow: inset 0 -0.3rem 0 currentColor; }
.menu-button, .mobile-nav { display: none; }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(34rem, 1.05fr);
  grid-template-rows: 1fr auto;
  column-gap: clamp(2rem, 4vw, 5rem);
  width: min(100% - 3rem, 1440px);
  min-height: min(920px, 100svh);
  margin: 0 auto;
  padding: 9.6rem 0 2.25rem;
  isolation: isolate;
}
.hero::before {
  position: absolute;
  z-index: -2;
  inset: 0 calc(50% - 50vw);
  content: "";
  background:
    linear-gradient(180deg, rgba(4, 9, 20, 0.1), #050914),
    radial-gradient(circle at 73% 44%, rgba(58, 111, 210, 0.12), transparent 31rem);
}
.hero-grid {
  position: absolute;
  z-index: -1;
  inset: 0 calc(50% - 50vw);
  opacity: 0.26;
  background-image:
    linear-gradient(rgba(100, 140, 210, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(100, 140, 210, 0.12) 1px, transparent 1px);
  background-size: 112px 112px;
  mask-image: linear-gradient(to bottom, transparent 3%, black 26%, transparent 88%);
}
.hero-copy { align-self: center; max-width: 42rem; padding-bottom: 2rem; animation: hero-copy-in 900ms cubic-bezier(0.2, 0.72, 0, 1) both; }
.eyebrow {
  margin: 0 0 1.55rem;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 42rem;
  margin: 0;
  color: #f4f1ec;
  font-family: var(--serif);
  font-size: clamp(3.55rem, 4.55vw, 5.1rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1.04;
}
body[data-language="zh"] .hero h1 { font-size: clamp(3.2rem, 4.2vw, 4.5rem); letter-spacing: -0.045em; }
.hero-phrase { white-space: nowrap; }
.hero-wave { display: inline-flex; color: #8fc2ff; white-space: nowrap; }
.hero-wave > span {
  display: inline-block;
  transform-origin: 50% 86%;
  animation: hero-word-wave 5.6s calc(1.2s + var(--wave-offset, 0ms) + var(--char-delay, 0ms)) cubic-bezier(0.22, 0.72, 0.18, 1) 3 both;
}
.hero-wave[data-hero-wave="judgment"] { --wave-offset: 1100ms; }
.hero-body { max-width: 37rem; margin: 1.65rem 0 0; color: #95a2b6; font-size: 1.02rem; line-height: 1.75; }
.hero-actions { display: flex; gap: 0.9rem; margin-top: 1.8rem; }
.button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  min-width: 13.5rem;
  min-height: 54px;
  padding: 0 1.25rem;
  border: 1px solid transparent;
  border-radius: 0.65rem;
  cursor: pointer;
  font: inherit;
  font-weight: 650;
  text-align: left;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}
.button-primary { color: #06101e; background: linear-gradient(105deg, #75b8ff, #91c9ff); box-shadow: 0 10px 35px rgba(74, 145, 236, 0.14); }
.button-secondary { border-color: rgba(144, 178, 230, 0.34); background: rgba(8, 15, 29, 0.68); }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary:hover, .button-primary:focus-visible { box-shadow: 0 14px 40px rgba(74, 145, 236, 0.24); }
.button-secondary:hover, .button-secondary:focus-visible { border-color: var(--blue); background: rgba(40, 77, 139, 0.15); }
.play-icon { display: grid; width: 1.55rem; height: 1.55rem; place-items: center; border: 1px solid currentColor; border-radius: 50%; font-size: 0.58rem; }
.hero-copy-prompt { min-width: 19.4rem; }
.button-copy-icon { position: relative; width: 0.82rem; height: 0.92rem; margin-left: 1rem; border: 1px solid currentColor; border-radius: 0.1rem; }
.button-copy-icon::before { position: absolute; top: -0.22rem; left: -0.22rem; width: 100%; height: 100%; border: 1px solid currentColor; border-radius: 0.1rem; content: ""; }
.agent-setup-summary { display: grid; max-width: 37rem; margin-top: 1.25rem; padding-top: 0.9rem; border-top: 1px solid rgba(127, 161, 215, 0.16); gap: 0.68rem; }
.agent-setup-label { display: flex; align-items: center; gap: 0.48rem; margin: 0; color: #91bfff; font-family: var(--mono); font-size: 0.6rem; font-weight: 650; letter-spacing: 0.075em; text-transform: uppercase; }
.agent-setup-label i { width: 0.38rem; height: 0.38rem; border-radius: 50%; background: #72d4ad; box-shadow: 0 0 10px rgba(72, 211, 165, 0.55); }
.agent-setup-points { display: flex; flex-wrap: wrap; gap: 0.48rem; }
.agent-setup-points > span { display: inline-flex; align-items: center; gap: 0.42rem; min-height: 1.8rem; padding: 0.28rem 0.55rem 0.28rem 0.32rem; border: 1px solid rgba(119, 161, 223, 0.17); border-radius: 999px; color: #9eacc0; background: rgba(8, 18, 34, 0.6); font-family: var(--mono); font-size: 0.56rem; }
.agent-setup-points b { display: grid; width: 1.18rem; height: 1.18rem; place-items: center; border: 1px solid rgba(112, 175, 255, 0.26); border-radius: 50%; color: #72b4ff; font-size: 0.43rem; font-weight: 600; }
.agent-setup-description { max-width: 34rem; margin: 0; color: #6f7e94; font-size: 0.72rem; line-height: 1.55; }
.agent-setup-links { display: flex; flex-wrap: wrap; gap: 0.95rem; }
.agent-setup-links a { color: #83b9f6; font-family: var(--mono); font-size: 0.58rem; transition: color 180ms ease; }
.agent-setup-links a:hover, .agent-setup-links a:focus-visible { color: #c0dcff; }

.control-visual {
  position: relative;
  align-self: center;
  display: grid;
  gap: 0.85rem;
  min-width: 0;
  padding: 1.2rem 2.6rem;
  animation: control-in 1000ms 180ms cubic-bezier(0.2, 0.72, 0, 1) both;
}
.control-visual::before { position: absolute; z-index: -2; inset: 10% 2%; border-radius: 50%; background: rgba(40, 91, 185, 0.12); filter: blur(62px); content: ""; }
.outer-rail { position: absolute; z-index: -1; top: 10%; bottom: 9%; width: 4.25rem; overflow: hidden; border: 2px solid rgba(116, 178, 255, 0.68); box-shadow: 0 0 22px rgba(94, 163, 255, 0.16), inset 0 0 15px rgba(94, 163, 255, 0.08); }
.outer-rail-left { left: 0.25rem; border-right: 0; border-radius: 2.5rem 0 0 2.5rem; }
.outer-rail-right { right: 0.2rem; border-left: 0; border-radius: 0 2.5rem 2.5rem 0; }
.outer-rail i { position: absolute; width: 0.55rem; height: 0.55rem; border-radius: 50%; background: #9bd0ff; box-shadow: 0 0 15px 5px rgba(90, 171, 255, 0.55); animation: rail-signal 7s linear 30 both; }
.outer-rail-left i { top: -1rem; left: -0.3rem; }
.outer-rail-right i { right: -0.3rem; bottom: -1rem; animation-delay: -3.5s; }
.control-card {
  position: relative;
  min-width: 0;
  padding: 1.05rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: linear-gradient(145deg, rgba(10, 21, 41, 0.94), rgba(5, 12, 25, 0.9));
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(16px);
  animation: card-drift 7s ease-in-out 20 both;
}
.control-card:nth-of-type(2) { animation-delay: -1.1s; }
.control-card:nth-of-type(3) { animation-delay: -2.1s; }
.control-card:nth-of-type(4) { animation-delay: -3.2s; }
.gate-card { border-color: rgba(255, 105, 114, 0.58); box-shadow: 0 0 0 1px rgba(255, 80, 94, 0.04), 0 14px 30px rgba(0, 0, 0, 0.24); }
.card-kicker { margin: 0 0 0.78rem; color: var(--blue); font-family: var(--mono); font-size: 0.76rem; font-weight: 650; letter-spacing: 0.09em; text-transform: uppercase; }
.gate-card .card-kicker { color: var(--red); }
.card-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 0.95rem; }
.card-row > strong, .agent-copy strong { color: #eef3fa; font-size: 0.97rem; font-weight: 550; }
.card-icon { display: grid; width: 2.55rem; height: 2.55rem; flex: 0 0 auto; place-items: center; border: 1px solid rgba(141, 180, 238, 0.28); border-radius: 0.55rem; color: #e9f2ff; font-family: var(--mono); font-size: 0.72rem; }
.target-icon::before { width: 1.05rem; height: 1.05rem; border: 1px solid currentColor; border-radius: 50%; box-shadow: inset 0 0 0 0.25rem var(--panel-strong); content: ""; }
.document-icon::before, .evidence-icon::before { width: 0.86rem; height: 1.08rem; border: 1px solid currentColor; border-radius: 0.08rem; background: linear-gradient(currentColor, currentColor) 50% 36% / 55% 1px no-repeat, linear-gradient(currentColor, currentColor) 50% 62% / 55% 1px no-repeat; content: ""; }
.person-icon::before { width: 0.62rem; height: 0.62rem; border: 1px solid var(--red); border-radius: 50%; content: ""; transform: translateY(-0.22rem); }
.person-icon::after { position: absolute; width: 1rem; height: 0.56rem; border: 1px solid var(--red); border-bottom: 0; border-radius: 0.7rem 0.7rem 0 0; content: ""; transform: translateY(0.55rem); }
.person-icon { position: relative; border-color: rgba(255, 105, 114, 0.54); }
.state { display: inline-flex; align-items: center; gap: 0.45rem; font-family: var(--mono); font-size: 0.67rem; font-weight: 650; letter-spacing: 0.05em; text-transform: uppercase; }
.state-blue, .lane-state { color: var(--blue); }
.state-red { color: var(--red); }
.state-blue > i:not(.check-icon) { width: 0.43rem; height: 0.43rem; border-radius: 50%; background: currentColor; box-shadow: 0 0 12px currentColor; animation: state-blink 2.8s ease-in-out 45 both; }
.pause-icon { position: relative; width: 1.45rem; height: 1.45rem; border: 1px solid currentColor; border-radius: 50%; animation: gate-pulse 2.8s ease-in-out 45 both; }
.pause-icon::before, .pause-icon::after { position: absolute; top: 0.38rem; width: 1px; height: 0.55rem; background: currentColor; content: ""; }
.pause-icon::before { left: 0.55rem; } .pause-icon::after { right: 0.55rem; }
.check-icon { position: relative; width: 1.45rem; height: 1.45rem; border: 1px solid currentColor; border-radius: 50%; box-shadow: 0 0 14px rgba(110, 171, 255, 0.25); }
.check-icon::before { position: absolute; top: 0.38rem; left: 0.35rem; width: 0.62rem; height: 0.32rem; border-bottom: 1px solid currentColor; border-left: 1px solid currentColor; content: ""; transform: rotate(-45deg); }
.agent-lane { display: grid; grid-template-columns: auto minmax(7rem, 1fr) minmax(6rem, 0.9fr) auto; align-items: center; gap: 0.8rem; padding: 0.65rem 0.7rem; border: 1px solid rgba(130, 169, 225, 0.16); border-radius: 0.55rem; background: rgba(2, 7, 16, 0.22); }
.agent-lane + .agent-lane { margin-top: 0.65rem; }
.agent-copy { display: grid; min-width: 0; gap: 0.2rem; }
.agent-copy small { overflow: hidden; color: #75839a; font-size: 0.72rem; text-overflow: ellipsis; white-space: nowrap; }
.lane-track { position: relative; display: block; height: 2px; overflow: visible; background: rgba(123, 157, 207, 0.18); }
.lane-track i { position: absolute; top: 50%; left: 0; width: 0.62rem; height: 0.62rem; border: 2px solid var(--blue-soft); border-radius: 50%; background: var(--panel-strong); box-shadow: 0 0 11px rgba(105, 177, 255, 0.45); animation: lane-progress 3.6s var(--lane-delay) ease-in-out 40 both; transform: translate(-50%, -50%); }
.lane-track::before { position: absolute; inset: 0 auto 0 0; width: 62%; background: var(--blue); box-shadow: 0 0 8px rgba(110, 171, 255, 0.4); content: ""; }
.lane-state { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.04em; text-transform: uppercase; }

.proof-strip { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); align-self: end; margin-top: 1.6rem; padding-top: 1.35rem; border-top: 1px solid rgba(125, 156, 203, 0.15); }
.proof-item { display: grid; grid-template-columns: auto 1fr; gap: 0.85rem; align-items: center; min-width: 0; padding: 0.25rem clamp(1rem, 2.5vw, 2.6rem); }
.proof-item:first-child { padding-left: 0; }
.proof-item + .proof-item { border-left: 1px solid rgba(125, 156, 203, 0.18); }
.proof-item div { display: grid; gap: 0.28rem; }
.proof-item strong { color: #e9eef6; font-size: 0.94rem; }
.proof-item small { color: #7d8ba0; font-size: 0.75rem; line-height: 1.4; }
.proof-icon { display: grid; width: 2.65rem; height: 2.65rem; place-items: center; border: 1px solid rgba(100, 161, 255, 0.76); border-radius: 50%; }
.lock-icon::before { width: 0.75rem; height: 0.62rem; border: 1px solid #b7d5ff; border-radius: 0.12rem; content: ""; box-shadow: 0 -0.42rem 0 -0.16rem var(--ink), 0 -0.42rem 0 -0.08rem #b7d5ff; }
.shield-icon::before { width: 0.8rem; height: 0.92rem; border: 1px solid #b7d5ff; border-radius: 0.55rem 0.55rem 0.7rem 0.7rem; content: ""; transform: scaleX(0.82); }
.paper-icon::before { width: 0.72rem; height: 0.94rem; border: 1px solid #8f89ff; border-radius: 0.08rem; background: linear-gradient(#8f89ff, #8f89ff) 50% 45% / 54% 1px no-repeat; content: ""; }

.product-section, .capability-section, .evidence-section, .quickstart-section, footer { width: min(100% - 3rem, 1320px); margin-inline: auto; }
.product-section, .capability-section, .evidence-section, .quickstart-section { padding: clamp(6rem, 10vw, 9rem) 0; }
.product-section { border-top: 1px solid rgba(131, 165, 219, 0.12); }
.section-heading { max-width: 52rem; }
.section-heading h2, .evidence-heading h2, .quickstart-section h2 { margin: 0; color: #f4f1ec; font-family: var(--serif); font-size: clamp(2.6rem, 4.5vw, 4.4rem); font-weight: 500; letter-spacing: -0.045em; line-height: 1.06; }
.section-heading > p:last-child, .evidence-heading > p, .split-heading > p { max-width: 42rem; margin: 1.4rem 0 0; color: var(--muted); font-size: 1rem; line-height: 1.75; }
.state-flow { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0.75rem; margin-top: 4rem; }
.flow-line { position: absolute; top: 1.8rem; right: 8%; left: 8%; height: 1px; overflow: hidden; background: rgba(113, 167, 255, 0.22); }
.flow-line i { position: absolute; top: -2px; left: -15%; width: 15%; height: 5px; border-radius: 999px; background: linear-gradient(90deg, transparent, #78b7ff, transparent); box-shadow: 0 0 14px #6eabff; animation: flow-sweep 6s linear 28 both; }
.state-flow article { position: relative; display: grid; min-height: 10rem; padding: 1.2rem; border: 1px solid rgba(128, 162, 214, 0.16); border-radius: 0.65rem; background: rgba(7, 15, 29, 0.72); }
.state-flow article span { position: relative; z-index: 1; display: grid; width: 2.4rem; height: 2.4rem; place-items: center; border: 1px solid rgba(109, 174, 255, 0.5); border-radius: 50%; color: var(--blue); background: var(--ink); font-family: var(--mono); font-size: 0.68rem; }
.state-flow article p { align-self: end; margin: 1.2rem 0 0.25rem; color: #708097; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.07em; text-transform: uppercase; }
.state-flow article strong { color: #e9eef5; font-size: 0.9rem; }
.split-heading { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 5rem; max-width: none; align-items: end; }
.split-heading > p { margin: 0; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 4rem; background: rgba(124, 161, 218, 0.16); border: 1px solid rgba(124, 161, 218, 0.16); border-radius: 0.75rem; overflow: hidden; }
.capability-grid article { min-height: 18rem; padding: 1.6rem; background: #07101f; transition: background 200ms ease; }
.capability-grid article:hover { background: #0a172b; }
.capability-number { color: var(--blue); font-family: var(--mono); font-size: 0.72rem; }
.capability-grid h3 { margin: 6rem 0 0.8rem; font-size: 1.18rem; }
.capability-grid p { margin: 0; color: #7d8ca3; font-size: 0.88rem; line-height: 1.65; }
.evidence-section { border-top: 1px solid rgba(131, 165, 219, 0.12); }
.evidence-heading { display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: end; gap: 5rem; }
.evidence-heading > p { margin: 0; }
.evidence-terminal { margin-top: 4rem; overflow: hidden; border: 1px solid rgba(126, 163, 219, 0.24); border-radius: 1rem; background: #02060d; box-shadow: 0 35px 85px rgba(0, 0, 0, 0.35); }
.evidence-terminal-bar { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 1rem; min-height: 3.25rem; padding: 0 1rem; border-bottom: 1px solid rgba(126, 163, 219, 0.16); background: linear-gradient(180deg, rgba(20, 31, 48, 0.96), rgba(9, 16, 29, 0.96)); }
.evidence-terminal-bar p { overflow: hidden; margin: 0; color: #7c899d; font-family: var(--mono); font-size: 0.7rem; text-align: center; text-overflow: ellipsis; white-space: nowrap; }
.evidence-terminal-bar > span { color: #74ceb0; font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.07em; text-transform: uppercase; }
.evidence-terminal-dots { display: flex; gap: 0.42rem; }
.evidence-terminal-dots i { width: 0.62rem; height: 0.62rem; border-radius: 50%; background: #ff6d70; }
.evidence-terminal-dots i:nth-child(2) { background: #f8c34f; }
.evidence-terminal-dots i:nth-child(3) { background: #45ce76; }
.evidence-terminal-tabs { display: flex; min-width: 0; overflow-x: auto; padding: 0.65rem 0.75rem 0; border-bottom: 1px solid rgba(126, 163, 219, 0.14); background: #070d17; scrollbar-width: none; }
.evidence-terminal-tabs::-webkit-scrollbar { display: none; }
.evidence-terminal-tabs button { min-width: 9.5rem; min-height: 2.7rem; padding: 0.65rem 1rem; border: 1px solid transparent; border-bottom: 0; border-radius: 0.55rem 0.55rem 0 0; color: #6f7b8e; background: transparent; cursor: pointer; font-family: var(--mono); font-size: 0.72rem; transition: color 180ms ease, border-color 180ms ease, background 180ms ease; }
.evidence-terminal-tabs button[aria-selected="true"] { border-color: rgba(126, 163, 219, 0.2); color: #e5ecf6; background: #02060d; }
.evidence-terminal-tabs button:hover, .evidence-terminal-tabs button:focus-visible { color: #b9d8ff; }
.terminal-demo-panel[hidden] { display: none; }
.terminal-session-header { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 0.9rem; min-height: 5.8rem; padding: 1rem 1.35rem; border-bottom: 1px solid rgba(126, 163, 219, 0.14); background: radial-gradient(circle at 15% 50%, rgba(66, 128, 219, 0.1), transparent 30%); }
.terminal-agent-mark { display: grid; width: 2.8rem; height: 2.8rem; place-items: center; border: 1px solid rgba(109, 174, 255, 0.45); border-radius: 0.65rem; color: #7cb7ff; background: #091326; font-size: 2rem; line-height: 1; }
.terminal-session-header > div { display: grid; gap: 0.25rem; min-width: 0; }
.terminal-session-header strong { color: #eef3fa; font-size: 1rem; }
.terminal-session-header small { overflow: hidden; color: #738198; font-family: var(--mono); font-size: 0.68rem; text-overflow: ellipsis; white-space: nowrap; }
.terminal-playback { display: inline-flex; align-items: center; gap: 0.55rem; min-height: 2.25rem; padding: 0 0.75rem; border: 1px solid rgba(126, 163, 219, 0.22); border-radius: 999px; color: #9aa9bc; background: rgba(13, 24, 42, 0.74); cursor: pointer; font-family: var(--mono); font-size: 0.62rem; }
.terminal-playback i { width: 0.62rem; height: 0.62rem; border-right: 2px solid currentColor; border-left: 2px solid currentColor; }
.terminal-demo-panel.is-paused .terminal-playback i { border: 0; border-top: 0.34rem solid transparent; border-bottom: 0.34rem solid transparent; border-left: 0.52rem solid currentColor; }
.terminal-demo-panel.is-complete .terminal-playback i { width: 0.7rem; height: 0.7rem; border: 1px solid currentColor; border-left-color: transparent; border-radius: 50%; }
.terminal-demo-body { min-height: 31rem; max-height: 31rem; overflow: auto; padding: 1.1rem 1.35rem 2rem; color: #b7c2d2; background: radial-gradient(circle at 80% 25%, rgba(61, 111, 194, 0.08), transparent 30%), #01040a; font-family: var(--mono); scrollbar-color: #43536a #09111e; scrollbar-width: thin; }
.terminal-command { display: flex; align-items: center; gap: 0.75rem; min-height: 3.2rem; margin-bottom: 1rem; padding: 0.75rem 0.9rem; border: 1px solid rgba(124, 151, 192, 0.12); border-radius: 0.35rem; background: rgba(255, 255, 255, 0.055); }
.terminal-command > span { color: #76849a; }
.terminal-command code { display: block; overflow: hidden; color: #adc8ff; font-size: 0.86rem; white-space: nowrap; }
.terminal-demo-line { display: grid; grid-template-columns: 0.7rem 5.5rem minmax(0, 1fr) auto; align-items: start; gap: 0.75rem; min-height: 3.85rem; padding: 0.9rem 0.55rem; border-bottom: 1px solid rgba(124, 151, 192, 0.08); }
.terminal-demo-line > i { width: 0.5rem; height: 0.5rem; margin-top: 0.3rem; border-radius: 50%; background: #6faeff; box-shadow: 0 0 10px rgba(111, 174, 255, 0.45); }
.terminal-line-label { color: #687790; font-size: 0.67rem; font-weight: 700; letter-spacing: 0.04em; }
.terminal-demo-line p { margin: 0; color: #bdc8d8; font-size: 0.82rem; line-height: 1.55; }
.terminal-demo-line > b { color: #78b7ff; font-size: 0.63rem; font-weight: 650; letter-spacing: 0.04em; }
.terminal-line-gate > i { background: #ff6d76; box-shadow: 0 0 11px rgba(255, 109, 118, 0.5); }
.terminal-line-gate > b { color: #ff838b; }
.terminal-line-ready > i, .terminal-line-evidence > i, .terminal-line-next > i { background: #59d5a7; box-shadow: 0 0 11px rgba(89, 213, 167, 0.45); }
.terminal-line-ready > b, .terminal-line-evidence > b, .terminal-line-next > b { color: #73ddb8; }
.terminal-branch-list { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.terminal-branch-list em { padding: 0.22rem 0.38rem; border: 1px solid rgba(117, 177, 255, 0.2); border-radius: 0.28rem; color: #92baf0; background: rgba(39, 74, 126, 0.13); font-size: 0.58rem; font-style: normal; }
.terminal-branch-list em:nth-child(2) { color: #a7b2c3; border-color: rgba(158, 170, 188, 0.18); }
.terminal-branch-list em:nth-child(3) { color: #ff9198; border-color: rgba(255, 109, 118, 0.22); }
.terminal-branch-list em:nth-child(4) { color: #b3a9ff; border-color: rgba(143, 126, 255, 0.24); }
.terminal-showcase-enhanced .terminal-command code { clip-path: inset(0 100% 0 0); }
.terminal-showcase-enhanced .terminal-demo-line { opacity: 0; transform: translateY(0.65rem); }
.terminal-showcase-enhanced .terminal-demo-panel.is-running .terminal-command code { animation: terminal-command-type 780ms 120ms steps(28, end) both; }
.terminal-showcase-enhanced .terminal-demo-panel.is-running .terminal-demo-line { animation: terminal-line-in 480ms var(--delay) cubic-bezier(0.2, 0.72, 0, 1) both; }
.terminal-demo-panel.is-paused .terminal-command code, .terminal-demo-panel.is-paused .terminal-demo-line { animation-play-state: paused !important; }
.terminal-demo-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 5rem; padding: 0.9rem 1.35rem; border-top: 1px solid rgba(126, 163, 219, 0.14); background: #07101c; }
.terminal-demo-footer > span { display: grid; gap: 0.2rem; }
.terminal-demo-footer b { color: #8ebfff; font-family: var(--mono); font-size: 0.64rem; font-weight: 650; }
.terminal-demo-footer small { color: #637187; font-size: 0.64rem; }
.evidence-open { display: inline-flex; align-items: center; justify-content: space-between; width: min(100%, 14rem); min-height: 42px; margin: 0; padding: 0 0.85rem; border: 1px solid rgba(115, 178, 255, 0.36); border-radius: 0.5rem; color: #cce3ff; background: rgba(40, 83, 153, 0.11); cursor: pointer; font-weight: 650; transition: transform 180ms ease, border-color 180ms ease, background 180ms ease; }
.evidence-open:hover, .evidence-open:focus-visible { border-color: var(--blue); background: rgba(57, 108, 194, 0.18); transform: translateY(-1px); }
.evidence-boundary { max-width: 54rem; margin: 1.25rem auto 0; color: #67758b; font-size: 0.72rem; line-height: 1.6; text-align: center; }
.evidence-dialog { width: min(96vw, 1500px); height: min(92svh, 980px); max-width: none; max-height: none; margin: auto; padding: 0; overflow: hidden; border: 1px solid rgba(123, 171, 241, 0.28); border-radius: 0.85rem; color: #eaf1fa; background: #050b16; box-shadow: 0 40px 120px rgba(0, 0, 0, 0.68); }
.evidence-dialog[open] { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; }
.evidence-dialog::backdrop { background: rgba(0, 4, 11, 0.82); backdrop-filter: blur(8px); }
.evidence-dialog-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-width: 0; padding: 0.85rem 1rem; border-bottom: 1px solid rgba(126, 163, 219, 0.18); }
.evidence-dialog-toolbar p { margin: 0; color: var(--blue); font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.08em; text-transform: uppercase; }
.evidence-dialog-toolbar h2 { overflow: hidden; margin: 0.25rem 0 0; font-size: 0.9rem; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.evidence-dialog-actions { display: flex; align-items: center; gap: 0.45rem; flex: 0 0 auto; }
.evidence-dialog-actions button, .evidence-dialog-actions output { display: grid; min-width: 2.35rem; min-height: 2.35rem; place-items: center; padding: 0 0.6rem; border: 1px solid rgba(126, 163, 219, 0.24); border-radius: 0.45rem; color: #b9cbe2; background: rgba(14, 28, 50, 0.8); font-family: var(--mono); font-size: 0.68rem; }
.evidence-dialog-actions button { cursor: pointer; }
.evidence-dialog-actions button:hover, .evidence-dialog-actions button:focus-visible { border-color: var(--blue); color: #fff; }
.evidence-dialog-close { font-size: 1rem !important; }
.evidence-viewport { min-width: 0; min-height: 0; overflow: auto; background: linear-gradient(rgba(96, 143, 211, 0.07) 1px, transparent 1px), linear-gradient(90deg, rgba(96, 143, 211, 0.07) 1px, transparent 1px), #020711; background-size: 32px 32px; cursor: grab; overscroll-behavior: contain; }
.evidence-viewport.is-dragging { cursor: grabbing; user-select: none; }
.evidence-canvas { display: grid; min-width: 100%; min-height: 100%; place-items: center; padding: 1.5rem; }
.evidence-canvas img { display: block; max-width: none; max-height: none; border-radius: 0.35rem; background: #fff; box-shadow: 0 20px 55px rgba(0, 0, 0, 0.35); user-select: none; }
.evidence-dialog-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.75rem 1rem; border-top: 1px solid rgba(126, 163, 219, 0.18); }
.evidence-dialog-footer p { max-width: 60rem; margin: 0; color: #718097; font-size: 0.64rem; line-height: 1.5; }
.evidence-dialog-footer a { flex: 0 0 auto; color: var(--blue-soft); font-size: 0.7rem; font-weight: 650; }
body.dialog-open { overflow: hidden; }
.quickstart-section { display: grid; grid-template-columns: 0.9fr 1.1fr; align-items: center; gap: 6rem; border-top: 1px solid rgba(131, 165, 219, 0.12); }
.quickstart-description { max-width: 33rem; margin: 1.2rem 0 0; color: #78869a; font-size: 0.88rem; line-height: 1.7; }
.terminal-card { overflow: hidden; border: 1px solid rgba(126, 163, 219, 0.22); border-radius: 0.75rem; background: #07101e; box-shadow: 0 30px 70px rgba(0, 0, 0, 0.24); }
.terminal-bar { display: flex; gap: 0.45rem; align-items: center; height: 2.8rem; padding: 0 1rem; border-bottom: 1px solid rgba(126, 163, 219, 0.16); }
.terminal-bar span { width: 0.55rem; height: 0.55rem; border-radius: 50%; background: #334158; }.terminal-bar span:nth-child(2) { background: #536989; }.terminal-bar span:nth-child(3) { background: #6eabff; }.terminal-bar small { margin-left: auto; color: #5d6c82; font-family: var(--mono); }
.terminal-card pre { margin: 0; overflow-wrap: anywhere; padding: 1.6rem; color: #b9c6d9; font: 0.82rem/1.85 var(--mono); white-space: pre-wrap; }.terminal-card b { color: var(--blue); }.terminal-card em { color: #7faeff; font-style: normal; }
.terminal-links { display: flex; flex-wrap: wrap; gap: 1rem; padding: 0 1.6rem 1.5rem; }
.terminal-links a { color: var(--blue-soft); font-size: 0.82rem; font-weight: 650; }
footer { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; min-height: 9rem; border-top: 1px solid rgba(131, 165, 219, 0.12); color: #718097; font-size: 0.78rem; }
.footer-brand { font-size: 1rem; color: #dbe4f1; }.footer-brand .brand-mark { width: 2.2rem; font-size: 2.35rem; }
footer p { text-align: center; } footer > div { justify-self: end; display: flex; gap: 1.5rem; }
.reveal { opacity: 0; transform: translateY(2.5rem); transition: opacity 800ms ease, transform 900ms cubic-bezier(0.2, 0.72, 0, 1); }.reveal.is-visible { opacity: 1; transform: none; }

@keyframes hero-copy-in { from { opacity: 0; transform: translateY(1.5rem); } to { opacity: 1; transform: none; } }
@keyframes hero-word-wave {
  0%, 10%, 100% { color: #8fc2ff; text-shadow: none; transform: translateY(0) scale(1); }
  3.2% { color: #e7f3ff; text-shadow: 0 0 0.28em rgba(103, 176, 255, 0.45); transform: translateY(-0.1em) scale(1.025); }
  6.2% { color: #b8dcff; text-shadow: 0 0 0.12em rgba(103, 176, 255, 0.18); transform: translateY(0.018em) scale(0.995); }
  8% { color: #8fc2ff; text-shadow: none; transform: translateY(0) scale(1); }
}
@keyframes control-in { from { opacity: 0; transform: translateX(2.5rem) scale(0.98); } to { opacity: 1; transform: none; } }
@keyframes rail-signal { 0% { top: -1rem; opacity: 0; } 8% { opacity: 1; } 92% { opacity: 1; } 100% { top: calc(100% + 1rem); opacity: 0; } }
@keyframes card-drift { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }
@keyframes state-blink { 0%, 100% { opacity: 0.55; } 50% { opacity: 1; } }
@keyframes gate-pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(255, 105, 114, 0); } 50% { box-shadow: 0 0 0 0.4rem rgba(255, 105, 114, 0.08); } }
@keyframes lane-progress { 0%, 8% { left: 0; opacity: 0; } 20% { opacity: 1; } 72% { opacity: 1; } 90%, 100% { left: 100%; opacity: 0; } }
@keyframes flow-sweep { from { transform: translateX(0); } to { transform: translateX(760%); } }
@keyframes terminal-command-type { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes terminal-line-in { from { opacity: 0; transform: translateY(0.65rem); } to { opacity: 1; transform: none; } }

@media (max-width: 1100px) {
  .hero { grid-template-columns: 0.9fr 1.1fr; column-gap: 1rem; }
  .hero h1 { font-size: clamp(3.2rem, 5.5vw, 4.4rem); }
  .control-visual { padding-inline: 1.7rem; }
  .agent-lane { grid-template-columns: auto 1fr minmax(4.5rem, 0.7fr); }.agent-lane .lane-state { display: none; }
  .desktop-nav { gap: 1.25rem; }
  .state-flow { grid-template-columns: repeat(3, 1fr); }.flow-line { display: none; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }.capability-grid h3 { margin-top: 3.5rem; }
}

@media (max-width: 820px) {
  .site-header { width: min(100% - 2rem, 720px); grid-template-columns: 1fr auto; height: 76px; }
  .desktop-nav, .github-link { display: none; }
  .menu-button { display: grid; width: 42px; height: 42px; place-content: center; gap: 4px; border: 1px solid rgba(139, 174, 229, 0.3); border-radius: 0.65rem; background: rgba(6, 12, 24, 0.8); cursor: pointer; }
  .menu-button span { display: block; width: 1.2rem; height: 1px; background: #d6dfed; }
  .mobile-nav { position: absolute; top: 68px; right: 0; display: grid; width: min(18rem, calc(100vw - 2rem)); padding: 0.6rem; border: 1px solid rgba(139, 174, 229, 0.24); border-radius: 0.7rem; background: rgba(5, 10, 20, 0.96); box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35); backdrop-filter: blur(18px); }
  .mobile-nav[hidden] { display: none; }.mobile-nav a, .mobile-language-toggle { padding: 0.8rem; border-radius: 0.4rem; color: #b9c5d7; text-align: left; }.mobile-nav a:hover, .mobile-nav a:focus-visible, .mobile-language-toggle:hover, .mobile-language-toggle:focus-visible { background: rgba(79, 132, 220, 0.1); color: #fff; }
  .hero { grid-template-columns: 1fr; grid-template-rows: auto auto auto; width: min(100% - 2rem, 720px); min-height: auto; padding-top: 8.2rem; }
  .hero-copy { max-width: 38rem; }.hero h1 { font-size: clamp(3rem, 11vw, 4.8rem); }.hero-actions { max-width: 34rem; }
  .control-visual { width: 100%; max-width: 44rem; margin: 2.4rem auto 0; padding-inline: 2rem; }
  .proof-strip { grid-template-columns: 1fr; gap: 0.8rem; }.proof-item, .proof-item:first-child { padding: 0.8rem 0; }.proof-item + .proof-item { border-top: 1px solid rgba(125, 156, 203, 0.18); border-left: 0; }
  .product-section, .capability-section, .evidence-section, .quickstart-section, footer { width: min(100% - 2rem, 720px); }
  .split-heading, .quickstart-section, .evidence-heading { grid-template-columns: 1fr; gap: 3rem; }
  .split-heading > p { margin-top: 1rem; }.state-flow { grid-template-columns: repeat(2, 1fr); }
  .evidence-heading > p { margin-top: 0; }
  .terminal-demo-line { grid-template-columns: 0.7rem 4.4rem minmax(0, 1fr); }
  .terminal-demo-line > b { grid-column: 3; }
  .evidence-dialog-toolbar { align-items: flex-start; flex-wrap: wrap; }
  .evidence-dialog-toolbar > div:first-child { min-width: 0; }
  .evidence-dialog-actions { width: 100%; }
  .evidence-dialog-actions output { flex: 1; }
  footer { grid-template-columns: 1fr; gap: 1rem; padding: 2.5rem 0; text-align: left; } footer p { text-align: left; } footer > div { justify-self: start; }
}

@media (max-width: 560px) {
  .brand { font-size: 1.22rem; }.brand-mark { width: 2.7rem; font-size: 2.9rem; }
  .hero { padding-top: 7.5rem; }.hero h1 { font-size: clamp(2.8rem, 13.1vw, 4rem); line-height: 1.03; }.hero h1 br:first-of-type { display: none; }
  body[data-language="zh"] .hero h1 { font-size: 2.35rem; line-height: 1.14; }
  body[data-language="zh"] .hero h1 br:first-of-type { display: block; }
  .hero-body { font-size: 0.94rem; }
  .hero-actions { display: grid; }.button { width: 100%; min-width: 0; }
  .agent-setup-points { display: grid; grid-template-columns: 1fr; }
  .agent-setup-description { font-size: 0.68rem; }
  .control-visual { padding-inline: 1.2rem; }.outer-rail { width: 2.2rem; }.control-card { padding: 0.9rem; }.card-row { gap: 0.65rem; }
  .goal-card .state { display: none; }.agent-lane { grid-template-columns: auto minmax(0, 1fr) 4.8rem; padding: 0.5rem; }.agent-copy strong { font-size: 0.85rem; }.agent-copy small { font-size: 0.65rem; }
  .gate-card .state, .evidence-card .state { font-size: 0; gap: 0; }.state .pause-icon, .state .check-icon { display: inline-block; }
  .state-flow, .capability-grid { grid-template-columns: 1fr; }.state-flow article { min-height: 8rem; }.capability-grid article { min-height: 13rem; }.capability-grid h3 { margin-top: 3rem; }
  .section-heading h2, .evidence-heading h2, .quickstart-section h2 { font-size: clamp(2.35rem, 11vw, 3.3rem); }
  .evidence-terminal { margin-top: 2.5rem; border-radius: 0.75rem; }
  .evidence-terminal-bar { grid-template-columns: auto minmax(0, 1fr); min-height: 3rem; padding: 0 0.75rem; }
  .evidence-terminal-bar > span { display: none; }
  .evidence-terminal-tabs { padding-inline: 0.5rem; }
  .evidence-terminal-tabs button { min-width: 8.2rem; }
  .terminal-session-header { min-height: 5rem; padding: 0.8rem; }
  .terminal-agent-mark { width: 2.35rem; height: 2.35rem; font-size: 1.65rem; }
  .terminal-playback { padding: 0 0.62rem; }
  .terminal-playback span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
  .terminal-demo-body { min-height: 31rem; max-height: 31rem; padding: 0.8rem 0.75rem 1.25rem; }
  .terminal-command { padding-inline: 0.7rem; }
  .terminal-command code { overflow-wrap: anywhere; font-size: 0.68rem; white-space: normal; }
  .terminal-demo-line { grid-template-columns: 0.7rem minmax(0, 1fr); gap: 0.35rem 0.65rem; min-height: 4.25rem; padding: 0.7rem 0.3rem; }
  .terminal-line-label, .terminal-demo-line p, .terminal-demo-line > b { grid-column: 2; }
  .terminal-demo-line > i { grid-row: 1; }
  .terminal-demo-line p { font-size: 0.66rem; }
  .terminal-demo-line > b { font-size: 0.54rem; }
  .terminal-demo-footer { align-items: stretch; flex-direction: column; padding: 0.85rem; }
  .terminal-demo-footer .evidence-open { width: 100%; }
  .evidence-dialog { width: 100vw; height: 100svh; border: 0; border-radius: 0; }
  .evidence-dialog-toolbar { flex-wrap: wrap; padding: 0.7rem; }
  .evidence-dialog-actions { width: 100%; }
  .evidence-dialog-actions output { flex: 1; }
  .evidence-dialog-footer { align-items: flex-start; padding: 0.65rem 0.7rem; }
  .evidence-dialog-footer p { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: 1ms !important; }
  .hero-copy, .control-visual, .reveal { opacity: 1; transform: none; }
  .hero-wave > span { animation: none !important; color: inherit; text-shadow: none; transform: none; }
  .outer-rail i { top: 48%; opacity: 0.7; }
  .lane-track i { left: 62%; opacity: 1; }
  .flow-line i { left: 48%; opacity: 0.7; transform: none; }
  .terminal-showcase-enhanced .terminal-command code { clip-path: none; }
  .terminal-showcase-enhanced .terminal-demo-line { opacity: 1; transform: none; }
  .terminal-playback { display: none; }
}