/* ================================================================
 * 一麦生花 Brand Site V4
 * AI perception identity shared by public-facing pages.
 * Shape rule: 10px controls, 18-24px surfaces, square signal nodes.
 * ================================================================ */

:root {
  --brand-blue: #0052ff;
  --brand-blue-deep: #003ec4;
  --brand-blue-soft: #eaf0ff;
  --brand-black: #0a0b0d;
  --brand-ink: #20242c;
  --brand-muted: #667085;
  --brand-cool: #f4f7fb;
  --brand-line: #dfe5ef;
  --brand-radius-control: 10px;
  --brand-radius-surface: 22px;
  --brand-ease: cubic-bezier(0.16, 1, 0.3, 1);

  --brand-type-display: clamp(56px, 6vw, 82px);
  --brand-type-section: clamp(40px, 4.5vw, 56px);
  --brand-type-section-emphasis: clamp(44px, 4.8vw, 64px);
  --brand-type-card: 19px;
  --brand-type-body: 16px;
  --brand-type-caption: 12px;
}

body.brand-home,
body.brand-pricing,
body.brand-auth,
body.brand-report {
  color: var(--brand-black);
  background: #fff;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-container {
  width: min(1240px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  border-bottom: 1px solid rgba(10, 11, 13, 0.08);
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
}

.site-header-inner {
  width: min(1240px, calc(100% - 48px));
  height: 72px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 40px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--brand-black);
}

.site-brand:hover { color: var(--brand-black); }
.site-brand img { width: 34px; height: 34px; }
.site-brand-copy { display: grid; gap: 1px; }
.site-brand-name { font-size: 16px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; }
.site-brand-desc { margin-top: 3px; color: #7c8595; font-size: 8px; font-weight: 700; letter-spacing: 0.16em; line-height: 1.1; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  position: relative;
  color: #3c4043;
  font-size: 14px;
  font-weight: 550;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -9px;
  height: 2px;
  background: var(--brand-blue);
  transition: right 220ms var(--brand-ease);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--brand-black); }
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { right: 0; }

.site-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-link-button,
.site-primary-button,
.site-secondary-button {
  min-height: 42px;
  padding: 0 18px;
  border-radius: var(--brand-radius-control);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 650;
  transition: transform 180ms var(--brand-ease), background 180ms ease, border-color 180ms ease;
}

.site-link-button { color: #3c4043; }
.site-link-button:hover { color: var(--brand-black); background: var(--brand-cool); }
.site-primary-button { background: var(--brand-blue); color: #fff; border: 1px solid var(--brand-blue); }
.site-primary-button:hover { background: var(--brand-blue-deep); color: #fff; box-shadow: 0 4px 14px rgba(0, 82, 255, 0.3); }
.site-secondary-button { color: var(--brand-black); background: #fff; border: 1px solid var(--brand-line); }
.site-secondary-button:hover { color: var(--brand-black); border-color: #b7c0cf; }
.site-primary-button:active,
.site-secondary-button:active,
.site-link-button:active { transform: scale(0.98); }

.site-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  margin-left: auto;
  border: 1px solid var(--brand-line);
  border-radius: var(--brand-radius-control);
  align-items: center;
  justify-content: center;
  color: var(--brand-black);
}

.site-menu-toggle span,
.site-menu-toggle span::before,
.site-menu-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.site-menu-toggle span { position: relative; }
.site-menu-toggle span::before,
.site-menu-toggle span::after { content: ""; position: absolute; left: 0; }
.site-menu-toggle span::before { top: -6px; }
.site-menu-toggle span::after { top: 6px; }
.site-menu-toggle[aria-expanded="true"] span { background: transparent; }
.site-menu-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.site-menu-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

.brand-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--brand-blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-kicker::before {
  content: "";
  width: 9px;
  height: 9px;
  border: 2px solid var(--brand-blue);
  border-radius: 2px;
}

.brand-home .site-main { overflow: clip; }

.brand-hero {
  min-height: calc(100dvh - 72px);
  display: flex;
  align-items: center;
  padding: 72px 0 64px;
  border-bottom: 1px solid rgba(10, 11, 13, 0.08);
}

.brand-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(560px, 1.1fr);
  align-items: center;
  gap: clamp(48px, 7vw, 112px);
}

.brand-hero-copy { max-width: 590px; }
.brand-hero .brand-kicker { margin-bottom: 28px; }

.brand-hero h1 {
  margin: 0;
  max-width: 10ch;
  color: var(--brand-black);
  font-size: var(--brand-type-display);
  font-weight: 650;
  letter-spacing: -0.065em;
  line-height: 0.99;
}

.brand-hero h1 span { color: var(--brand-blue); }

.brand-hero-lead {
  max-width: 510px;
  margin: 28px 0 0;
  color: #3a4149;
  font-size: 18px;
  line-height: 1.65;
}

.brand-hero-form {
  max-width: 540px;
  margin-top: 34px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 7px;
  border: 1px solid var(--brand-line);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 54px rgba(15, 37, 80, 0.1);
}

.brand-hero-form:focus-within {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 4px rgba(0, 82, 255, 0.1), 0 18px 54px rgba(15, 37, 80, 0.1);
}

.brand-hero-form input {
  min-width: 0;
  height: 50px;
  padding: 0 16px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--brand-black);
  font-size: 15px;
}

.brand-hero-form input::placeholder { color: #8a94a5; }
.brand-hero-form button { min-width: 158px; border: 0; }

.brand-hero-meta {
  margin-top: 20px;
  display: flex;
  gap: 22px;
  color: #737d8d;
  font-size: 12px;
}

.brand-hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.brand-hero-meta span::before { content: ""; width: 6px; height: 6px; background: var(--brand-blue); border-radius: 1px; }

.signal-stage {
  position: relative;
  min-height: 610px;
  overflow: hidden;
  border: 1px solid #c9d5e8;
  border-radius: 28px;
  background: #eef4fd;
  box-shadow: 0 34px 90px rgba(23, 45, 85, 0.16);
  isolation: isolate;
}

.signal-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(70, 105, 160, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(70, 105, 160, 0.09) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent 94%);
}

.signal-stage::after {
  content: "";
  position: absolute;
  inset: 10% 14%;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 82, 255, 0.16), transparent 66%);
}

.signal-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.56; }

.signal-stage-head {
  position: absolute;
  top: 24px;
  left: 26px;
  right: 26px;
  z-index: 4;
  display: flex;
  justify-content: space-between;
  color: #68758a;
  font: 700 10px/1 var(--font-mono);
  letter-spacing: 0.1em;
}

.signal-engine-state { display: inline-flex; align-items: center; gap: 8px; }
.signal-engine-state::before { content: ""; width: 8px; height: 8px; border: 2px solid var(--brand-blue); border-radius: 2px; animation: signalPulse 1.6s ease-in-out infinite; }

.signal-core {
  position: absolute;
  top: 49%;
  left: 50%;
  z-index: 3;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--brand-black);
  transform: translate(-50%, -50%);
}

.signal-core-mark { width: 72px; height: 72px; padding: 8px; border: 1px solid rgba(0, 82, 255, 0.24); border-radius: 20px; background: rgba(255, 255, 255, 0.9); box-shadow: 0 18px 42px rgba(0, 82, 255, 0.18); }
.signal-core-mark img { width: 100%; height: 100%; }
.signal-core strong { margin-top: 15px; font-size: 15px; font-weight: 700; }
.signal-core small { margin-top: 3px; color: #6d7889; font-size: 10px; }

.signal-ring { position: absolute; inset: 0; border: 1px solid rgba(0, 82, 255, 0.24); border-radius: 50%; }
.signal-ring::before { content: ""; position: absolute; top: -4px; left: 50%; width: 8px; height: 8px; border-radius: 2px; background: var(--brand-blue); transform: translateX(-50%); }
.signal-ring-a { animation: signalRotate 9s linear infinite; }
.signal-ring-b { inset: -42px; border-style: dashed; animation: signalRotate 15s linear infinite reverse; }
.signal-ring-c { inset: -88px; border-color: rgba(0, 82, 255, 0.12); animation: signalRotate 22s linear infinite; }
.signal-ring-c::before { background: #8eacff; }

.signal-scan { position: absolute; inset: -104px; overflow: hidden; border-radius: 50%; animation: signalRotate 5.6s linear infinite; }
.signal-scan::before { content: ""; position: absolute; inset: 0; background: conic-gradient(from 0deg, rgba(0, 82, 255, 0.2), transparent 22%, transparent 100%); mask-image: radial-gradient(circle, transparent 48%, #000 49%, #000 54%, transparent 55%); }

.signal-platform-node {
  position: absolute;
  z-index: 4;
  min-width: 112px;
  padding: 11px 14px;
  border: 1px solid rgba(91, 119, 164, 0.22);
  border-radius: 13px;
  display: flex;
  align-items: center;
  gap: 9px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 14px 34px rgba(38, 68, 116, 0.1);
  color: #475467;
  font-size: 11px;
  font-weight: 650;
  backdrop-filter: blur(10px);
  animation: signalNodeFloat 4.8s var(--brand-ease) infinite;
}

.signal-platform-node img { width: 22px; height: 22px; object-fit: contain; }
.node-doubao { top: 19%; left: 8%; }
.node-deepseek { top: 16%; right: 7%; animation-delay: -1.2s; }
.node-yuanbao { bottom: 22%; left: 7%; animation-delay: -2.4s; }
.node-qianwen { right: 8%; bottom: 19%; animation-delay: -3.6s; }

.signal-flow-strip {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 22px;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  border: 1px solid rgba(67, 96, 144, 0.18);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(10px);
}

.signal-flow-strip span { position: relative; padding: 14px 8px; color: #7a8494; text-align: center; font-size: 10px; font-weight: 700; transition: color 300ms ease, background 300ms ease; }
.signal-flow-strip span + span { border-left: 1px solid rgba(67, 96, 144, 0.14); }
.signal-flow-strip span.is-active { background: var(--brand-blue); color: #fff; }

@keyframes signalPulse {
  0%, 100% { opacity: 0.4; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1); }
}

@keyframes signalRotate { to { transform: rotate(360deg); } }
@keyframes signalNodeFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

.platform-band {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(10, 11, 13, 0.08);
  background: #fff;
}

.platform-band::after { content: ""; position: absolute; inset: auto auto 0 -22%; width: 22%; height: 2px; background: linear-gradient(90deg, transparent, var(--brand-blue), transparent); animation: platformSweep 5.4s ease-in-out infinite; }

.platform-band-inner {
  min-height: 132px;
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  align-items: center;
  gap: clamp(32px, 6vw, 92px);
}

.platform-band-intro { display: grid; gap: 5px; align-content: center; }
.platform-band-kicker { color: var(--brand-blue); font-size: 10px; font-weight: 750; letter-spacing: 0.12em; }
.platform-band-intro strong { color: var(--brand-black); font-size: 21px; font-weight: 650; letter-spacing: -0.025em; }
.platform-band-note { color: #7c8595; font-size: var(--brand-type-caption); line-height: 1.5; }
.platform-brand-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); align-items: center; gap: 18px 28px; }
.platform-brand { display: inline-flex; align-items: center; min-width: 0; color: #555e6d; font-size: 13px; font-weight: 650; white-space: nowrap; }
@keyframes platformSweep { 0% { transform: translateX(0); } 70%, 100% { transform: translateX(560%); } }

.brand-section { padding: 132px 0; }
.brand-section.is-cool { background: var(--brand-cool); }
.section-head { max-width: 720px; margin-bottom: 64px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head .brand-kicker { margin-bottom: 20px; }
.section-head h2 { color: var(--brand-black); font-size: var(--brand-type-section); font-weight: 640; letter-spacing: -0.055em; line-height: 1.02; }
.section-head p { max-width: 610px; margin-top: 22px; color: #464d58; font-size: var(--brand-type-body); line-height: 1.7; }
.section-head.center p { margin-inline: auto; }

.decision-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(56px, 9vw, 138px);
  align-items: start;
}

.decision-statement {
  position: sticky;
  top: 118px;
}

.decision-statement h2 { margin-top: 24px; font-size: var(--brand-type-section-emphasis); font-weight: 520; letter-spacing: -0.06em; line-height: 1.03; }
.decision-statement p { max-width: 470px; margin-top: 24px; color: #464d58; font-size: var(--brand-type-body); line-height: 1.7; }

.risk-list { border-top: 1px solid #cfd7e3; }
.risk-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 24px;
  padding: 34px 0;
  border-bottom: 1px solid #cfd7e3;
  opacity: 0.48;
  transition: opacity 420ms ease, transform 420ms var(--brand-ease);
}

.risk-item.is-active { opacity: 1; transform: translateX(8px); }
.risk-pulse { position: relative; width: 12px; height: 12px; margin-top: 7px; border: 2px solid #9fb3d3; border-radius: 3px; transition: border-color 300ms ease, background 300ms ease; }
.risk-item.is-active .risk-pulse { border-color: var(--brand-blue); background: var(--brand-blue); }
.risk-item.is-active .risk-pulse::after { content: ""; position: absolute; inset: -8px; border: 1px solid rgba(0, 82, 255, 0.24); border-radius: 7px; animation: riskPulse 1.4s ease-out infinite; }
@keyframes riskPulse { from { opacity: 0.8; transform: scale(0.7); } to { opacity: 0; transform: scale(1.3); } }
.risk-item h3 { color: var(--brand-black); font-size: var(--brand-type-card); font-weight: 600; letter-spacing: -0.025em; }
.risk-item p { max-width: 560px; margin-top: 10px; color: #555e6b; font-size: 15px; line-height: 1.7; }

.system-grid { display: grid; grid-template-columns: minmax(300px, 0.68fr) minmax(0, 1.32fr); gap: 72px; align-items: stretch; }
.system-copy { display: flex; flex-direction: column; justify-content: space-between; padding: 12px 0; }
.system-copy h2 { margin-top: 22px; font-size: var(--brand-type-section); font-weight: 520; letter-spacing: -0.055em; line-height: 1.05; }
.system-copy p { max-width: 420px; margin-top: 22px; color: #535b68; font-size: 16px; line-height: 1.7; }
.system-copy .site-secondary-button { align-self: flex-start; margin-top: 32px; }

.system-rail {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  background: var(--brand-black);
  color: #fff;
}

.system-progress { position: absolute; top: 0; bottom: 0; left: 0; z-index: 3; width: 3px; background: rgba(255, 255, 255, 0.08); }
.system-progress span { display: block; width: 100%; height: 100%; background: var(--brand-blue); transform: scaleY(var(--system-progress, 0.25)); transform-origin: top; transition: transform 600ms var(--brand-ease); }

.system-step {
  position: relative;
  min-height: 164px;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) auto;
  align-items: center;
  gap: 26px;
  padding: 28px 34px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 420ms ease, transform 420ms var(--brand-ease);
}

.system-step:last-child { border-bottom: 0; }
.system-step.is-active { background: linear-gradient(90deg, rgba(0, 82, 255, 0.28), rgba(0, 82, 255, 0.04)); }
.system-step.is-active::after { content: ""; position: absolute; top: 0; bottom: 0; left: -24%; width: 24%; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent); animation: stepSweep 1.2s var(--brand-ease); }
@keyframes stepSweep { to { transform: translateX(620%); } }
.system-step-index { color: #8facff; font-family: var(--font-mono); font-size: 12px; font-weight: 700; letter-spacing: 0.1em; }
.system-step h3 { font-size: 24px; font-weight: 560; letter-spacing: -0.02em; }
.system-step p { max-width: 470px; margin-top: 7px; color: rgba(255, 255, 255, 0.62); font-size: 13px; line-height: 1.6; }
.system-step-result { color: #fff; font-size: 13px; font-weight: 650; }

.signal-lab-section { background: var(--brand-cool); }
.signal-lab-grid { display: grid; grid-template-columns: minmax(300px, 0.72fr) minmax(0, 1.28fr); gap: clamp(48px, 8vw, 112px); align-items: center; }
.signal-lab-copy h2 { max-width: 560px; font-size: var(--brand-type-section); font-weight: 520; letter-spacing: -0.058em; line-height: 1.04; }
.signal-lab-copy > p { max-width: 500px; margin-top: 24px; color: #535b68; font-size: 16px; line-height: 1.7; }
.signal-output-list { margin-top: 42px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; overflow: hidden; border: 1px solid var(--brand-line); border-radius: 18px; background: var(--brand-line); }
.signal-output-list > div { min-height: 132px; padding: 20px; background: #fff; transition: background 360ms ease, color 360ms ease; }
.signal-output-list > div.is-active { background: var(--brand-blue); color: #fff; }
.signal-output-list span { color: var(--brand-blue); font: 700 9px/1 var(--font-mono); letter-spacing: 0.1em; }
.signal-output-list > div.is-active span { color: rgba(255, 255, 255, 0.7); }
.signal-output-list strong { display: block; margin-top: 20px; font-size: 17px; }
.signal-output-list small { display: block; margin-top: 5px; color: #7b8593; font-size: 11px; }
.signal-output-list > div.is-active small { color: rgba(255, 255, 255, 0.68); }

.signal-lab-visual { position: relative; min-height: 620px; overflow: hidden; border: 1px solid #1e2b42; border-radius: 26px; background: #0d1119; box-shadow: 0 32px 80px rgba(19, 38, 72, 0.2); }
.lab-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(119, 147, 195, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(119, 147, 195, 0.08) 1px, transparent 1px); background-size: 34px 34px; mask-image: radial-gradient(circle at center, #000, transparent 88%); }
.lab-beam { position: absolute; left: 0; right: 0; top: 0; height: 90px; background: linear-gradient(to bottom, transparent, rgba(0, 82, 255, 0.16), transparent); animation: labBeam 4.8s ease-in-out infinite; }
@keyframes labBeam { 0% { transform: translateY(-100%); } 80%, 100% { transform: translateY(680%); } }

.lab-input-column { position: absolute; top: 90px; bottom: 90px; left: 44px; width: 154px; padding: 20px; border: 1px solid rgba(143, 172, 224, 0.16); border-radius: 18px; display: flex; flex-direction: column; gap: 18px; background: rgba(255, 255, 255, 0.03); }
.lab-input-column span { color: #7d91b6; font: 700 9px/1 var(--font-mono); letter-spacing: 0.08em; }
.lab-input-column i { position: relative; display: block; height: 7px; overflow: hidden; border-radius: 2px; background: rgba(143, 172, 224, 0.12); }
.lab-input-column i::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, #5485ff, transparent); transform: translateX(-100%); animation: inputRead 2.8s ease-in-out infinite; }
.lab-input-column i:nth-child(3)::after { animation-delay: -0.5s; }
.lab-input-column i:nth-child(4)::after { animation-delay: -1s; }
.lab-input-column i:nth-child(5)::after { animation-delay: -1.5s; }
.lab-input-column i:nth-child(6)::after { animation-delay: -2s; }
@keyframes inputRead { 0% { transform: translateX(-100%); } 55%, 100% { transform: translateX(100%); } }

.lab-engine { position: absolute; top: 50%; left: 52%; width: 188px; height: 188px; border-radius: 50%; display: grid; place-items: center; transform: translate(-50%, -50%); }
.lab-engine::before { content: ""; position: absolute; inset: 30px; border-radius: 50%; background: rgba(0, 82, 255, 0.12); box-shadow: 0 0 52px rgba(0, 82, 255, 0.24); animation: engineBreathe 2.4s ease-in-out infinite; }
.lab-engine img { position: relative; z-index: 2; width: 62px; height: 62px; }
.lab-orbit { position: absolute; inset: 0; border: 1px solid rgba(91, 132, 218, 0.34); border-radius: 50%; animation: signalRotate 8s linear infinite; }
.lab-orbit::after { content: ""; position: absolute; top: 12px; right: 28px; width: 9px; height: 9px; border-radius: 2px; background: #6f98ff; }
.lab-orbit.is-inner { inset: 24px; border-style: dashed; animation-direction: reverse; animation-duration: 12s; }
@keyframes engineBreathe { 0%, 100% { transform: scale(0.92); opacity: 0.55; } 50% { transform: scale(1.08); opacity: 1; } }

.lab-output-column { position: absolute; top: 126px; right: 34px; display: grid; gap: 12px; }
.lab-output-column span { min-width: 86px; padding: 12px 14px; border: 1px solid rgba(143, 172, 224, 0.16); border-radius: 10px; background: rgba(255, 255, 255, 0.04); color: #8da0c2; font-size: 11px; text-align: center; transition: background 320ms ease, border-color 320ms ease, color 320ms ease; }
.lab-output-column span.is-active { border-color: #527fff; background: rgba(0, 82, 255, 0.28); color: #fff; }
.lab-route { position: absolute; left: 198px; right: 120px; height: 1px; overflow: hidden; background: linear-gradient(90deg, rgba(82, 127, 255, 0.08), rgba(82, 127, 255, 0.48), rgba(82, 127, 255, 0.08)); }
.lab-route i { position: absolute; top: -3px; left: 0; width: 7px; height: 7px; border-radius: 2px; background: #6f98ff; box-shadow: 0 0 16px rgba(82, 127, 255, 0.8); animation: routePacket 3s ease-in-out infinite; }
.route-one { top: 38%; }
.route-two { top: 50%; }
.route-three { top: 62%; }
.route-two i { animation-delay: -1s; }
.route-three i { animation-delay: -2s; }
@keyframes routePacket { 0% { transform: translateX(0); opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 100% { transform: translateX(440px); opacity: 0; } }

.industry-layout { display: grid; grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr); gap: 24px; }
.industry-copy { padding: 48px; border-radius: 24px; background: var(--brand-blue); color: #fff; }
.industry-copy h2 { margin-top: 24px; font-size: var(--brand-type-section); font-weight: 520; letter-spacing: -0.05em; line-height: 1.06; }
.industry-copy p { margin-top: 22px; color: rgba(255, 255, 255, 0.75); font-size: 16px; line-height: 1.75; }
.industry-tags { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 8px; }
.industry-tags span { padding: 8px 11px; border: 1px solid rgba(255, 255, 255, 0.26); border-radius: 9px; color: #fff; font-size: 12px; }

.industry-network { position: relative; min-height: 520px; overflow: hidden; border: 1px solid var(--brand-line); border-radius: 24px; background: #fff; }
.industry-network-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(75, 103, 148, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(75, 103, 148, 0.08) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(circle at center, #000, transparent 82%); }
.industry-network::before,
.industry-network::after { content: ""; position: absolute; top: 50%; left: 50%; border: 1px solid rgba(0, 82, 255, 0.14); border-radius: 50%; transform: translate(-50%, -50%); }
.industry-network::before { width: 330px; height: 330px; }
.industry-network::after { width: 470px; height: 470px; border-style: dashed; animation: signalRotate 30s linear infinite; }
.industry-network-core { position: absolute; top: 50%; left: 50%; z-index: 2; width: 168px; height: 168px; border: 1px solid #b8c9e4; border-radius: 50%; display: flex; flex-direction: column; align-items: center; justify-content: center; background: #eef4ff; transform: translate(-50%, -50%); box-shadow: 0 20px 56px rgba(0, 82, 255, 0.14); }
.industry-network-core img { width: 54px; height: 54px; }
.industry-network-core strong { margin-top: 11px; font-size: 14px; }
.industry-network-core span { margin-top: 4px; color: #778295; font-size: 10px; }
.sector-node { position: absolute; z-index: 3; min-width: 110px; padding: 12px 14px; border: 1px solid #d8e0ec; border-radius: 11px; background: rgba(255, 255, 255, 0.9); color: #5b6472; font-size: 11px; font-weight: 650; text-align: center; transition: color 360ms ease, border-color 360ms ease, background 360ms ease, transform 360ms var(--brand-ease), box-shadow 360ms ease; cursor: pointer; }
.sector-node::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 82, 255, 0.3), transparent 70%);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
  z-index: -1;
  pointer-events: none;
}
.sector-node:hover::before {
  width: 200px;
  height: 200px;
}
.sector-node:hover {
  border-color: rgba(0, 82, 255, 0.5);
  background: rgba(255, 255, 255, 1);
  transform: scale(1.08) translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 82, 255, 0.15);
}
.sector-node.is-active {
  border-color: var(--brand-blue);
  background: var(--brand-blue);
  color: #fff;
  transform: scale(1.1);
  box-shadow: 0 0 0 0 rgba(0, 82, 255, 0.4), 0 14px 32px rgba(0, 82, 255, 0.25);
  animation: sector-pulse 2s ease-in-out infinite;
}
@keyframes sector-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(0, 82, 255, 0.4), 0 14px 32px rgba(0, 82, 255, 0.25);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(0, 82, 255, 0), 0 14px 40px rgba(0, 82, 255, 0.35);
  }
}
.sector-consumer { top: 12%; left: 12%; }
.sector-saas { top: 13%; right: 11%; }
.sector-edu { top: 45%; left: 5%; }
.sector-health { top: 45%; right: 5%; }
.sector-finance { bottom: 12%; left: 13%; }
.sector-local { right: 12%; bottom: 12%; }

.metric-band { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--brand-line); border-bottom: 1px solid var(--brand-line); }
.metric-item { min-height: 190px; padding: 42px 32px; border-right: 1px solid var(--brand-line); }
.metric-item:last-child { border-right: 0; }
.metric-item strong { display: block; color: var(--brand-black); font-size: clamp(38px, 4vw, 58px); font-weight: 560; letter-spacing: -0.055em; }
.metric-item span { display: block; max-width: 160px; margin-top: 12px; color: #687180; font-size: 13px; line-height: 1.55; }
.engine-band .metric-item { position: relative; overflow: hidden; }
.engine-band .metric-item::after { content: ""; position: absolute; left: 32px; bottom: 30px; width: 34px; height: 3px; background: var(--brand-blue); transform: scaleX(0.25); transform-origin: left; transition: transform 320ms var(--brand-ease); }
.engine-band .metric-item:hover::after { transform: scaleX(1); }
.engine-band .metric-item strong { color: var(--brand-blue); font: 700 clamp(20px, 2vw, 28px)/1 var(--font-mono); letter-spacing: 0.08em; }

.brand-cta-section { padding: 36px 0 100px; }
.brand-cta {
  position: relative;
  overflow: hidden;
  min-height: 420px;
  padding: 64px 72px;
  border-radius: 28px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 440px;
  align-items: center;
  gap: 64px;
  background: var(--brand-blue);
  color: #fff;
}

.brand-cta-copy,
.brand-cta-form { position: relative; z-index: 1; }
.brand-cta h2 { max-width: 760px; font-size: var(--brand-type-section-emphasis); font-weight: 520; letter-spacing: -0.06em; line-height: 1; text-wrap: balance; }
.brand-cta p { max-width: 540px; margin-top: 24px; color: rgba(255, 255, 255, 0.74); font-size: 16px; line-height: 1.7; }
.brand-cta-form { display: grid; gap: 10px; padding: 9px; border: 1px solid rgba(255, 255, 255, 0.26); border-radius: 17px; background: rgba(255, 255, 255, 0.12); }
.brand-cta-form input { width: 100%; height: 52px; padding: 0 15px; border: 0; outline: 0; background: transparent; color: #fff; }
.brand-cta-form input::placeholder { color: rgba(255, 255, 255, 0.62); }
.brand-cta-form button { min-height: 50px; border: 0; background: #fff; color: var(--brand-blue); }
.brand-cta-form button:hover { background: #eef3ff; color: var(--brand-blue-deep); }

.site-footer { padding: 72px 0 34px; border-top: 1px solid rgba(10, 11, 13, 0.08); background: #fff; }
.site-footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr; gap: 72px; padding-bottom: 52px; }
.site-footer-about p { max-width: 340px; margin-top: 18px; color: #687180; font-size: 13px; line-height: 1.7; }
.site-footer-nav h3 { margin-bottom: 18px; color: #8a93a1; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; }
.site-footer-nav a { display: block; width: fit-content; margin-top: 11px; color: #3f4651; font-size: 14px; }
.site-footer-nav a:hover { color: var(--brand-blue); }
.site-footer-bottom { padding-top: 24px; border-top: 1px solid rgba(10, 11, 13, 0.08); display: flex; justify-content: space-between; gap: 24px; color: #8a93a1; font-size: 12px; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity 720ms var(--brand-ease), transform 720ms var(--brand-ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* Pricing */
.brand-pricing .v520-body,
.brand-pricing main { background: #fff; }
.brand-pricing .v520-hero { padding: 90px 0 52px !important; background: #fff; }
.brand-pricing .v520-hero::after { display: none; }
.brand-pricing .pricing-hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 76px !important;
  background:
    radial-gradient(circle at 78% 18%, rgba(0, 82, 255, 0.16), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
}
.brand-pricing .pricing-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.34;
  background-image:
    linear-gradient(rgba(0, 82, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 82, 255, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}
.brand-pricing .pricing-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  gap: 72px;
  align-items: center;
}
.brand-pricing .pricing-hero-copy { max-width: 720px; margin: 0; text-align: left; }
.brand-pricing .pricing-hero-copy .v520-kicker { margin: 0; }
.brand-pricing .pricing-hero-copy h1 {
  max-width: 12ch;
  margin: 18px 0 20px;
  font-size: clamp(48px, 5.5vw, 76px) !important;
  line-height: 0.98;
  letter-spacing: -0.065em;
  text-wrap: balance;
}
.brand-pricing .pricing-hero-copy p { max-width: 560px; font-size: 18px; line-height: 1.7; }
.brand-pricing .pricing-hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 28px;
  color: #53617a;
  font-size: 13px;
  font-weight: 620;
}
.brand-pricing .pricing-hero-proof span { display: inline-flex; align-items: center; gap: 8px; }
.brand-pricing .pricing-hero-proof span::before { content: ""; width: 7px; height: 7px; border-radius: 2px; background: var(--brand-blue); box-shadow: 0 0 0 4px rgba(0, 82, 255, 0.1); }
.brand-pricing .pricing-hero-visual {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 24px;
  background: #0a0b0d;
  color: #fff;
  box-shadow: 0 28px 72px rgba(24, 46, 92, 0.22);
}
.brand-pricing .pricing-hero-visual::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  top: -148px;
  right: -96px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 82, 255, 0.7), rgba(0, 82, 255, 0) 68%);
  pointer-events: none;
}
.brand-pricing .pricing-hero-visual-head { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; color: rgba(255, 255, 255, 0.54); font-size: 11px; font-weight: 700; letter-spacing: 0.14em; }
.brand-pricing .pricing-hero-visual-head b { display: inline-flex; align-items: center; gap: 7px; color: #a8c2ff; font-size: 12px; letter-spacing: 0; }
.brand-pricing .pricing-hero-visual-head b i { width: 7px; height: 7px; border-radius: 50%; background: #4d86ff; box-shadow: 0 0 0 5px rgba(77, 134, 255, 0.13); }
.brand-pricing .pricing-hero-metric { position: relative; z-index: 1; display: flex; align-items: flex-end; gap: 14px; margin-top: 36px; }
.brand-pricing .pricing-hero-metric strong { font: 620 clamp(52px, 6vw, 74px)/0.9 var(--font-mono); letter-spacing: -0.08em; }
.brand-pricing .pricing-hero-metric strong em { margin-left: 3px; color: #6d9aff; font-size: 0.48em; font-style: normal; letter-spacing: -0.02em; }
.brand-pricing .pricing-hero-metric span { padding-bottom: 5px; color: rgba(255, 255, 255, 0.52); font-size: 12px; }
.brand-pricing .pricing-hero-models { position: relative; z-index: 1; display: grid; gap: 9px; margin-top: 32px; }
.brand-pricing .pricing-hero-model { display: grid; grid-template-columns: 22px 78px minmax(60px, 1fr) 38px; align-items: center; gap: 9px; min-width: 0; padding: 9px 10px; border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 10px; background: rgba(255, 255, 255, 0.045); }
.brand-pricing .pricing-hero-model img { width: 22px; height: 22px; object-fit: contain; }
.brand-pricing .pricing-hero-model > span { overflow: hidden; color: rgba(255, 255, 255, 0.72); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.brand-pricing .pricing-hero-model > i { position: relative; display: block; overflow: hidden; height: 5px; border-radius: 999px; background: rgba(255, 255, 255, 0.12); }
.brand-pricing .pricing-hero-model > i::after { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--signal-width); border-radius: inherit; background: #5d8dff; }
.brand-pricing .pricing-hero-model > b { color: #dce7ff; font: 600 11px/1 var(--font-mono); text-align: right; }
.brand-pricing .pricing-hero-visual-foot { position: relative; z-index: 1; margin-top: 22px; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, 0.1); color: rgba(255, 255, 255, 0.46); font-size: 11px; letter-spacing: 0.08em; }
.brand-pricing .v520-section { background: #f7f9fd; }
.brand-pricing .v520-section-head h1,
.brand-pricing .v520-section-head h2 { font-size: var(--brand-type-section-emphasis) !important; font-weight: 640; letter-spacing: -0.055em; line-height: 1.02; }
.brand-pricing .v520-section-head p { max-width: 680px; color: #58616f; }
.brand-pricing .pricing-hero-copy h1 { font-size: clamp(48px, 5.5vw, 76px) !important; line-height: 0.98; }
.brand-pricing .v520-kicker { color: var(--brand-blue); }
.brand-pricing .v520-kicker::before { border-radius: 2px; box-shadow: none; }
.brand-pricing .pr-diag-banner { position: relative; overflow: hidden; max-width: none; margin: 0 0 48px; padding: 26px 30px; border: 0; border-radius: 18px; background: var(--brand-black); box-shadow: 0 20px 48px rgba(10, 11, 13, 0.14); }
.brand-pricing .pr-diag-banner::before { content: ""; position: absolute; top: 0; right: 0; width: 46%; height: 100%; background: linear-gradient(90deg, transparent, rgba(0, 82, 255, 0.34)); pointer-events: none; }
.brand-pricing .pr-diag-banner > * { position: relative; z-index: 1; }
.brand-pricing .pr-banner-kicker { margin-bottom: 8px; color: #7ea5ff; font-size: 10px; font-weight: 750; letter-spacing: 0.16em; }
.brand-pricing .pr-diag-banner .t { color: #fff; font-size: 16px; }
.brand-pricing .pr-diag-banner .d { color: rgba(255, 255, 255, 0.62); }
.brand-pricing .pr-diag-banner .price { color: #fff; }
.brand-pricing .pr-diag-banner .price s { color: rgba(255, 255, 255, 0.42); }
.brand-pricing .pr-diag-banner .btn { border-color: rgba(255, 255, 255, 0.2); background: #fff; color: var(--brand-black); }
.brand-pricing .pr-choice-head { display: flex; align-items: end; justify-content: space-between; gap: 36px; margin-bottom: 24px; }
.brand-pricing .pr-choice-kicker { margin-bottom: 10px; color: var(--brand-blue); font-size: 10px; font-weight: 750; letter-spacing: 0.16em; }
.brand-pricing .pr-choice-head h2 { margin: 0; color: var(--brand-black); font-size: clamp(30px, 3.5vw, 46px); line-height: 1; letter-spacing: -0.055em; }
.brand-pricing .pr-cycle { justify-content: flex-start; }
.brand-pricing .pr-cycle button { border-radius: var(--brand-radius-control); padding: 9px 18px; }
.brand-pricing .pr-grid { gap: 18px; }
.brand-pricing .pr-card { overflow: hidden; border-color: #dce4f0; border-radius: 24px; padding: 32px 30px; background: rgba(255, 255, 255, 0.94); box-shadow: 0 18px 48px rgba(33, 58, 103, 0.08); transition: transform 260ms var(--brand-ease), border-color 260ms var(--brand-ease), box-shadow 260ms var(--brand-ease); }
.brand-pricing .pr-card::before { content: ""; display: block; width: 42px; height: 4px; margin-bottom: 22px; border-radius: 2px; background: #d6e1f7; }
.brand-pricing .pr-card:hover { border-color: #9fb9ef; transform: translateY(-6px); box-shadow: 0 26px 60px rgba(33, 58, 103, 0.14); }
.brand-pricing .pr-card.is-reco { border-color: var(--brand-blue); background: linear-gradient(155deg, #0052ff 0%, #073ba9 100%); box-shadow: 0 28px 70px rgba(0, 82, 255, 0.28); transform: translateY(-10px); }
.brand-pricing .pr-card.is-reco:hover { border-color: #4f87ff; transform: translateY(-14px); box-shadow: 0 34px 78px rgba(0, 82, 255, 0.34); }
.brand-pricing .pr-card.is-reco::before { background: rgba(255, 255, 255, 0.82); }
.brand-pricing .pr-card-overline { margin-bottom: 10px; color: var(--brand-blue); font-size: 10px; font-weight: 750; letter-spacing: 0.14em; }
.brand-pricing .pr-card.is-reco .pr-card-overline { color: #bcd0ff; }
.brand-pricing .pr-reco-tag { top: 16px; left: auto; right: 16px; transform: none; border-radius: 8px; }
.brand-pricing .pr-card.is-reco .pr-reco-tag { background: #fff; color: var(--brand-blue); box-shadow: 0 8px 22px rgba(5, 36, 115, 0.22); }
.brand-pricing .pr-name { font-size: 24px; font-weight: 620; }
.brand-pricing .pr-pos { color: #68758a; }
.brand-pricing .pr-summary { min-height: 44px; margin: 0 0 24px; color: #6c7789; font-size: 13px; line-height: 1.6; }
.brand-pricing .pr-price .num { font-size: 46px; font-weight: 580; letter-spacing: -0.05em; }
.brand-pricing .pr-buy { margin-top: 4px; border-radius: var(--brand-radius-control); }
.brand-pricing .pr-card.is-reco .pr-name,
.brand-pricing .pr-card.is-reco .pr-pos,
.brand-pricing .pr-card.is-reco .pr-summary,
.brand-pricing .pr-card.is-reco .pr-price .cur,
.brand-pricing .pr-card.is-reco .pr-price .num,
.brand-pricing .pr-card.is-reco .pr-price .per,
.brand-pricing .pr-card.is-reco .pr-price-note,
.brand-pricing .pr-card.is-reco .pr-quota li,
.brand-pricing .pr-card.is-reco .pr-quota li .k,
.brand-pricing .pr-card.is-reco .pr-quota li .v { color: #fff; }
.brand-pricing .pr-card.is-reco .pr-save-tag { background: rgba(255, 255, 255, 0.16); color: #fff; }
.brand-pricing .pr-card.is-reco .pr-save-amount { background: rgba(255, 255, 255, 0.16); color: #fff; }
.brand-pricing .pr-card.is-reco .pr-quota li { border-bottom-color: rgba(255, 255, 255, 0.18); }
.brand-pricing .pr-card.is-reco .pr-buy { background: #fff; color: var(--brand-blue); }
.brand-pricing .pr-card.is-reco .pr-buy:hover { background: #eaf0ff; color: var(--brand-blue-deep); }
.brand-pricing .pr-confidence { display: flex; align-items: center; gap: 18px; margin-top: 28px; padding: 18px 22px; border: 1px solid #dce4f0; border-radius: 16px; background: rgba(255, 255, 255, 0.72); }
.brand-pricing .pr-confidence-mark { flex: 0 0 auto; padding: 8px 10px; border-radius: 7px; background: var(--brand-blue); color: #fff; font: 700 10px/1 var(--font-mono); letter-spacing: 0.08em; }
.brand-pricing .pr-confidence strong { display: block; color: var(--brand-black); font-size: 15px; }
.brand-pricing .pr-confidence span { display: block; margin-top: 4px; color: #667085; font-size: 12px; line-height: 1.55; }
.brand-pricing .pricing-faq-list { gap: 0; border-top: 1px solid var(--brand-line); }
.brand-pricing .pricing-faq-item { border: 0; border-bottom: 1px solid var(--brand-line); border-radius: 0; }
.brand-pricing .pricing-faq-item[open] { border-color: var(--brand-line); box-shadow: none; }

/* Auth */
.brand-auth { min-height: 100dvh; background: var(--brand-cool); }
.brand-auth::before { display: none; }
.brand-auth .site-header { position: relative; background: transparent; }
.auth-shell { min-height: calc(100dvh - 73px); display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(440px, 0.92fr); }
.auth-story {
  position: relative;
  overflow: hidden;
  padding: clamp(42px, 5vw, 68px) max(42px, 6vw);
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #f3f7ff;
  color: var(--brand-black);
  border-right: 1px solid rgba(0, 82, 255, 0.1);
}
.auth-story::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(0, 82, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 82, 255, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.72), transparent 92%);
  pointer-events: none;
}
.auth-story-copy { position: relative; z-index: 2; }
.auth-story h1 { max-width: 12ch; margin-top: 18px; font-size: clamp(40px, 4.2vw, 62px); font-weight: 640; letter-spacing: -0.055em; line-height: 1.02; }
.auth-story h1 span { color: var(--brand-blue); }
.auth-story p { max-width: 480px; margin-top: 18px; color: #5d6878; font-size: 15px; line-height: 1.65; }
.auth-signal-chamber {
  position: relative;
  z-index: 1;
  isolation: isolate;
  width: min(660px, 100%);
  height: clamp(330px, 38vh, 430px);
  min-height: 330px;
  margin-top: clamp(26px, 4vh, 40px);
  overflow: hidden;
  border: 1px solid rgba(0, 82, 255, 0.16);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 28px 72px rgba(45, 75, 128, 0.11), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}
.auth-signal-chamber::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 50% 46%, rgba(0, 82, 255, 0.12), transparent 28%),
    linear-gradient(rgba(0, 82, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 82, 255, 0.035) 1px, transparent 1px);
  background-size: auto, 32px 32px, 32px 32px;
}
.auth-signal-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.44; }
.auth-chamber-status {
  position: absolute;
  top: 20px;
  left: 22px;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #46536a;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.02em;
}
.auth-live-mark { width: 7px; height: 7px; border-radius: 50%; background: var(--brand-blue); box-shadow: 0 0 0 5px rgba(0, 82, 255, 0.1); }
.auth-signal-core {
  position: absolute;
  top: 45%;
  left: 50%;
  z-index: 4;
  width: 124px;
  height: 124px;
  border: 1px solid rgba(0, 82, 255, 0.2);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 20px 50px rgba(0, 82, 255, 0.14), inset 0 0 0 9px rgba(0, 82, 255, 0.035);
  transform: translate(-50%, -50%);
}
.auth-signal-core::before,
.auth-signal-core::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(0, 82, 255, 0.16);
  border-radius: 50%;
  pointer-events: none;
}
.auth-signal-core::before { inset: -22px; }
.auth-signal-core::after { inset: -48px; border-style: dashed; }
.auth-core-orbit { position: absolute; inset: -49px; border-radius: 50%; border-top: 2px solid var(--brand-blue); border-right: 2px solid transparent; }
.auth-core-mark { width: 58px; height: 58px; border-radius: 16px; overflow: hidden; box-shadow: 0 12px 28px rgba(0, 82, 255, 0.2); }
.auth-core-mark img { width: 100%; height: 100%; display: block; }
.auth-signal-core > span { position: absolute; bottom: -44px; color: #59667a; font-size: 10px; font-weight: 650; letter-spacing: 0.05em; white-space: nowrap; }
.auth-model-node {
  position: absolute;
  z-index: 4;
  min-width: 116px;
  padding: 10px 12px;
  border: 1px solid rgba(33, 55, 91, 0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 9px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 34px rgba(43, 67, 107, 0.09);
  color: #4b576a;
  font-size: 11px;
  font-weight: 620;
  transition: transform 520ms var(--brand-ease), border-color 520ms var(--brand-ease), color 520ms var(--brand-ease), box-shadow 520ms var(--brand-ease);
}
.auth-model-node img { width: 22px; height: 22px; flex: 0 0 auto; object-fit: contain; }
.auth-model-node.is-active { border-color: rgba(0, 82, 255, 0.45); color: var(--brand-blue); box-shadow: 0 14px 36px rgba(0, 82, 255, 0.14); transform: translateY(-3px); }
.auth-node-doubao { top: 22%; left: 7%; }
.auth-node-deepseek { top: 20%; right: 7%; }
.auth-node-yuanbao { right: 9%; bottom: 26%; }
.auth-node-qianwen { bottom: 24%; left: 8%; }
.auth-connector {
  position: absolute;
  top: 45%;
  left: 50%;
  z-index: 2;
  width: 35%;
  height: 1px;
  overflow: hidden;
  background: linear-gradient(90deg, rgba(0, 82, 255, 0.38), rgba(0, 82, 255, 0.08));
  transform-origin: 0 50%;
}
.auth-connector span { position: absolute; top: -2px; left: 0; width: 16px; height: 5px; border-radius: 4px; background: var(--brand-blue); opacity: 0; }
.auth-connector-doubao { transform: rotate(204deg); }
.auth-connector-deepseek { transform: rotate(326deg); }
.auth-connector-yuanbao { transform: rotate(29deg); }
.auth-connector-qianwen { transform: rotate(151deg); }
.auth-onboarding-flow {
  position: absolute;
  right: 18px;
  bottom: 16px;
  left: 18px;
  z-index: 5;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(0, 82, 255, 0.1);
  border-radius: 12px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: rgba(248, 251, 255, 0.93);
  list-style: none;
}
.auth-onboarding-flow li {
  position: relative;
  padding: 12px 8px;
  color: #7a8596;
  font-size: 10px;
  font-weight: 650;
  text-align: center;
  transition: color 420ms var(--brand-ease), background-color 420ms var(--brand-ease);
}
.auth-onboarding-flow li + li { border-left: 1px solid rgba(0, 82, 255, 0.08); }
.auth-onboarding-flow li.is-active { background: var(--brand-blue-soft); color: var(--brand-blue); }
@media (prefers-reduced-motion: no-preference) {
  .auth-core-orbit { animation: auth-orbit 9s linear infinite; }
  .auth-signal-core::before { animation: auth-scan-pulse 2.8s var(--brand-ease) infinite; }
  .auth-connector span { animation: auth-signal-packet 2.4s var(--brand-ease) infinite; }
  .auth-connector-deepseek span { animation-delay: 0.45s; }
  .auth-connector-yuanbao span { animation-delay: 0.9s; }
  .auth-connector-qianwen span { animation-delay: 1.35s; }
  .auth-live-mark { animation: auth-live-pulse 2s var(--brand-ease) infinite; }
}
@keyframes auth-orbit { to { transform: rotate(360deg); } }
@keyframes auth-scan-pulse { 0%, 100% { opacity: 0.45; transform: scale(0.92); } 50% { opacity: 1; transform: scale(1.08); } }
@keyframes auth-signal-packet { 0% { opacity: 0; transform: translateX(0) scaleX(0.65); } 18%, 74% { opacity: 0.85; } 100% { opacity: 0; transform: translateX(210px) scaleX(1); } }
@keyframes auth-live-pulse { 0%, 100% { box-shadow: 0 0 0 4px rgba(0, 82, 255, 0.08); } 50% { box-shadow: 0 0 0 8px rgba(0, 82, 255, 0.12); } }
.auth-panel { padding: 64px max(38px, 7vw); display: flex; flex-direction: column; justify-content: center; background: #fff; }
.auth-panel-inner { width: min(460px, 100%); margin-inline: auto; }
.auth-panel h2 { margin-top: 20px; color: var(--brand-black); font-size: 38px; font-weight: 560; letter-spacing: -0.045em; }
.auth-panel .auth-sub { margin-top: 13px; color: #667085; font-size: 14px; line-height: 1.65; }
.auth-panel .auth-new-user-tip { margin: 28px 0 0 !important; padding: 15px 16px !important; border: 0 !important; border-radius: 12px !important; background: var(--brand-blue-soft) !important; }
.auth-panel .auth-form { margin-top: 26px; }
.auth-panel .input { height: 50px; border-radius: var(--brand-radius-control); }
.auth-panel .auth-code-row .btn { border: 1px solid var(--brand-line); border-radius: var(--brand-radius-control); background: var(--brand-cool); }
.auth-panel .auth-form > .btn-primary { min-height: 50px; border-radius: var(--brand-radius-control); }
/* Public report */
.brand-report.rc-page { background: #eef3fb; }
.brand-report.rc-page::before { display: none; }
.brand-report .rc-wrap { max-width: 980px; padding-top: 22px; }
.brand-report .rc-brandbar { min-height: 58px; padding: 8px 12px; border: 1px solid rgba(10, 11, 13, 0.08); border-radius: 15px; background: rgba(255, 255, 255, 0.92); }
.brand-report .rc-brandbar-logo { display: inline-flex; align-items: center; gap: 10px; }
.brand-report .rc-brandbar-logo img { width: 30px; height: 30px; }
.brand-report .rc-cover { padding: 56px 34px 30px; }
.brand-report .rc-cover h1 { font-size: clamp(38px, 5vw, 58px); font-weight: 540; letter-spacing: -0.05em; }
.brand-report .rc-intro { border-radius: 22px; background: var(--brand-blue); box-shadow: none; }
.brand-report .rc-intro-title { font-weight: 480; }
.brand-report .rc-chapter { border-color: #d9e1ed; border-radius: 20px; box-shadow: none; }
.brand-report .rc-chapter-num { border-radius: 9px; background: var(--brand-blue); box-shadow: none; }
.brand-report .rc-stat { background: #f5f7fb; border-color: #e1e7f0; }
.brand-report .rc-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.brand-report .rc-conclusion-item { border-left-color: var(--brand-blue); }
.brand-report .rc-final-cta { border-radius: 18px; background: var(--brand-black); }
.brand-report .rc-bottom-nav { border-color: #d9e1ed; box-shadow: 0 14px 40px rgba(32, 48, 77, 0.12); }

@media (max-width: 1100px) {
  .brand-hero-grid { grid-template-columns: 1fr; }
  .brand-hero-copy { max-width: 760px; }
  .brand-hero h1 { max-width: 12ch; }
  .signal-stage { width: min(720px, 100%); margin-inline: auto; }
  .decision-grid,
  .system-grid,
  .industry-layout,
  .signal-lab-grid { grid-template-columns: 1fr; }
  .decision-statement { position: static; }
  .system-copy { min-height: 360px; }
  .signal-lab-copy { max-width: 720px; }
  .signal-lab-visual { width: min(760px, 100%); }
  .brand-cta { grid-template-columns: 1fr; align-items: end; }
  .brand-cta-form { width: min(520px, 100%); }
  .brand-pricing .pricing-hero-inner { grid-template-columns: 1fr; gap: 42px; }
  .brand-pricing .pricing-hero-copy { margin-inline: auto; text-align: center; }
  .brand-pricing .pricing-hero-copy .v520-kicker { margin-inline: auto; }
  .brand-pricing .pricing-hero-copy h1,
  .brand-pricing .pricing-hero-copy p { margin-inline: auto; }
  .brand-pricing .pricing-hero-proof { justify-content: center; }
  .brand-pricing .pricing-hero-visual { width: min(620px, 100%); margin-inline: auto; }
  .brand-pricing .pr-choice-head { align-items: flex-start; flex-direction: column; gap: 10px; }
  .brand-pricing .pr-card.is-reco { transform: none; }
  .brand-pricing .pr-card.is-reco:hover { transform: translateY(-6px); }
}

@media (max-width: 840px) {
  .site-header-inner { position: relative; }
  .site-menu-toggle { display: inline-flex; }
  .site-header .site-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    padding: 16px;
    border: 1px solid var(--brand-line);
    border-radius: 0 0 16px 16px;
    background: #fff;
    box-shadow: 0 20px 48px rgba(21, 37, 65, 0.12);
  }
  .site-header .site-nav.is-open { display: grid; gap: 4px; }
  .site-header .site-nav a { padding: 12px; }
  .site-header .site-nav a::after { display: none; }
  .site-actions .site-link-button { display: none; }
  .platform-band-inner { grid-template-columns: 1fr; gap: 20px; padding: 28px 0; }
  .platform-brand-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 24px; }
  .metric-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-item:nth-child(2) { border-right: 0; }
  .metric-item:nth-child(-n+2) { border-bottom: 1px solid var(--brand-line); }
  .site-footer-grid { grid-template-columns: 1fr 1fr; }
  .site-footer-about { grid-column: 1 / -1; }
  .auth-shell { grid-template-columns: 1fr; }
  .auth-story { min-height: 500px; padding: 52px 8vw; }
  .auth-story h1 { max-width: 14ch; }
  .auth-signal-chamber { width: min(680px, 100%); height: 360px; min-height: 360px; }
  /* .dist-* / .loop-visual-container 的响应式规则集中在文件末尾（基础规则之后），
     否则同优先级下会被桌面尺寸按源码顺序覆盖。 */
}

@media (max-width: 640px) {
  body.brand-home,
  body.brand-pricing,
  body.brand-auth,
  body.brand-report { overflow-x: hidden; }
  .site-container,
  .site-header-inner { width: min(100% - 32px, 1240px); }
  .site-header-inner { gap: 16px; }
  .site-brand-desc { display: none; }
  .site-actions { display: none; }
  .brand-hero { min-height: auto; padding: 58px 0 46px; }
  .brand-hero-grid { gap: 48px; }
  .brand-hero-copy { min-width: 0; }
  .brand-hero h1 { max-width: 10ch; font-size: clamp(42px, 13vw, 58px); }
  .brand-hero-lead { font-size: 16px; }
  .brand-hero-form { width: 100%; grid-template-columns: 1fr; padding: 9px; }
  .brand-hero-form button { width: 100%; }
  .brand-hero-meta { flex-direction: column; gap: 8px; }
  .signal-stage { min-height: 550px; border-radius: 20px; }
  .signal-stage-head { top: 18px; left: 18px; right: 18px; }
  .signal-core { top: 47%; width: 148px; height: 148px; }
  .signal-core-mark { width: 62px; height: 62px; border-radius: 17px; }
  .signal-ring-b { inset: -34px; }
  .signal-ring-c { inset: -70px; }
  .signal-scan { inset: -82px; }
  .signal-platform-node { min-width: 0; padding: 9px 10px; }
  .signal-platform-node span { display: none; }
  .signal-platform-node img { width: 22px; height: 22px; }
  .node-doubao { top: 20%; left: 7%; }
  .node-deepseek { top: 18%; right: 7%; }
  .node-yuanbao { bottom: 23%; left: 7%; }
  .node-qianwen { right: 7%; bottom: 22%; }
  .signal-flow-strip { left: 12px; right: 12px; bottom: 12px; }
  .signal-flow-strip span { padding: 12px 4px; font-size: 9px; }
  .brand-section { padding: 88px 0; }
  .section-head { margin-bottom: 44px; }
  .section-head h2,
  .decision-statement h2,
  .system-copy h2,
  .signal-lab-copy h2 { font-size: 40px; }
  .risk-item { grid-template-columns: 24px 1fr; gap: 14px; }
  .risk-item h3 { font-size: 20px; }
  .system-copy { min-height: auto; padding-bottom: 24px; }
  .system-step { min-height: 0; grid-template-columns: 54px 1fr; padding: 24px 20px; }
  .system-step-result { grid-column: 2; }
  .signal-output-list { grid-template-columns: 1fr 1fr; }
  .signal-lab-visual { min-height: 520px; border-radius: 20px; }
  .lab-input-column { top: 74px; bottom: 74px; left: 20px; width: 110px; padding: 16px 12px; }
  .lab-engine { left: 51%; width: 154px; height: 154px; }
  .lab-output-column { top: 108px; right: 18px; }
  .lab-output-column span { min-width: 62px; padding: 10px 8px; }
  .lab-route { left: 130px; right: 80px; }
  .industry-copy,
  .industry-network { padding: 30px 24px; }
  .industry-network { min-height: auto; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .industry-network-grid,
  .industry-network::before,
  .industry-network::after { display: none; }
  .industry-network-core { position: relative; top: auto; left: auto; grid-column: 1 / -1; width: 100%; height: 170px; margin-bottom: 8px; border-radius: 18px; transform: none; }
  .sector-node { position: static; min-width: 0; }
  .metric-band { grid-template-columns: 1fr; }
  .metric-item { min-height: 0; border-right: 0; border-bottom: 1px solid var(--brand-line); }
  .metric-item:last-child { border-bottom: 0; }
  .brand-cta-section { padding-bottom: 64px; }
  .brand-cta { min-height: auto; padding: 52px 24px 56px; border-radius: 22px; gap: 32px; align-items: stretch; }
  .brand-cta h2 { font-size: 40px; }
  .brand-pricing .v520-hero { padding: 64px 0 38px !important; }
  .brand-pricing .pricing-hero-copy h1 { font-size: 44px !important; }
  .brand-pricing .pricing-hero-copy p { font-size: 16px; }
  .brand-pricing .pricing-hero-proof { gap: 9px 14px; font-size: 12px; }
  .brand-pricing .pricing-hero-visual { padding: 20px; border-radius: 20px; }
  .brand-pricing .pricing-hero-metric { margin-top: 28px; }
  .brand-pricing .pricing-hero-model { grid-template-columns: 22px 70px minmax(48px, 1fr) 34px; gap: 7px; }
  .brand-pricing .v520-section-head h1,
  .brand-pricing .v520-section-head h2 { max-width: 11ch; margin-inline: auto !important; font-size: 36px !important; line-height: 1.08; }
  .brand-pricing .v520-section-head p { max-width: 34ch; }
  .brand-pricing .pr-diag-banner { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 12px; padding: 24px 20px; }
  .brand-pricing .pr-diag-banner > div:first-child { grid-column: 1 / -1; }
  .brand-pricing .pr-diag-banner .price { margin-left: 0; align-self: center; }
  .brand-pricing .pr-card { padding: 28px 24px; }
  .brand-pricing .pr-confidence { align-items: flex-start; padding: 16px; }
  .brand-pricing .pr-confidence strong { font-size: 14px; }
  .brand-pricing .v520-section { padding-bottom: 64px; }
  /* .dist-* 响应式见文件末尾（基础规则之后） */
  .site-footer-grid { grid-template-columns: 1fr; gap: 36px; }
  /* 闭环可视化的移动端适配集中在文件末尾的 loop-visual 块，
     必须放在基础规则之后才能生效（媒体查询不增加优先级）。 */
  .site-footer-about { grid-column: auto; }
  .site-footer-bottom { flex-direction: column; }
  .auth-story { min-height: 280px; padding: 24px 16px 18px; justify-content: flex-start; }
  .auth-story::before { background-size: 32px 32px; }
  .auth-story .brand-kicker { display: none; }
  .auth-story h1 { max-width: 15ch; margin-top: 0; font-size: 29px; line-height: 1.08; }
  .auth-story p { max-width: 36ch; margin-top: 8px; font-size: 12px; line-height: 1.45; }
  .auth-signal-chamber { height: 146px; min-height: 146px; margin-top: 14px; border-radius: 18px; }
  .auth-chamber-status { display: none; }
  .auth-signal-core { top: 43%; width: 64px; height: 64px; box-shadow: 0 12px 30px rgba(0, 82, 255, 0.12), inset 0 0 0 5px rgba(0, 82, 255, 0.035); }
  .auth-signal-core::before { inset: -12px; }
  .auth-signal-core::after { inset: -25px; }
  .auth-core-orbit { inset: -26px; }
  .auth-core-mark { width: 34px; height: 34px; border-radius: 10px; }
  .auth-signal-core > span { display: none; }
  .auth-model-node { min-width: 0; padding: 6px; border-radius: 9px; }
  .auth-model-node img { width: 18px; height: 18px; }
  .auth-model-node span { display: none; }
  .auth-node-doubao { top: 14%; left: 8%; }
  .auth-node-deepseek { top: 13%; right: 8%; }
  .auth-node-yuanbao { right: 9%; bottom: 34%; }
  .auth-node-qianwen { bottom: 33%; left: 9%; }
  .auth-connector { top: 43%; width: 38%; }
  .auth-onboarding-flow { right: 7px; bottom: 6px; left: 7px; border-radius: 8px; }
  .auth-onboarding-flow li { padding: 6px 2px; font-size: 8px; }
  .auth-panel { padding: 40px 24px 54px; }
  .auth-panel h2 { font-size: 32px; }
  .brand-report .rc-wrap { padding-inline: 12px; }
  .brand-report .rc-brandbar { flex-wrap: wrap; }
  .brand-report .rc-brandbar .partner,
  .brand-report .rc-brandbar .sep { display: none; }
  .brand-report .rc-stats { grid-template-columns: 1fr; }
}

/* ========================================
   闭环流程 - 圆形可视化
   ======================================== */

.loop-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 64px;
}

.loop-visual-container {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 48px;
  align-items: center;
}

.loop-circle-wrapper {
  position: relative;
  width: 600px;
  height: 600px;
  margin: 0 auto;
}

.loop-circle-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(0, 82, 255, 0.03) 0%, rgba(0, 82, 255, 0.08) 50%, transparent 70%);
  border-radius: 50%;
  animation: loop-bg-pulse 8s ease-in-out infinite;
}

@keyframes loop-bg-pulse {
  0%, 100% { transform: scale(0.95); opacity: 0.6; }
  50% { transform: scale(1.05); opacity: 1; }
}

.loop-circle-track {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 440px;
  height: 440px;
  border: 2px solid rgba(0, 82, 255, 0.15);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.loop-circle-flow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 440px;
  height: 440px;
  border: 3px solid transparent;
  border-top-color: var(--brand-blue);
  border-right-color: rgba(0, 82, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: loop-rotate 8s linear infinite;
  box-shadow: 0 0 20px rgba(0, 82, 255, 0.3);
}

@keyframes loop-rotate {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.loop-connections {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.loop-center {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 180px;
  height: 180px;
  background: linear-gradient(135deg, #f8fbff 0%, #eef4ff 100%);
  border: 2px solid rgba(0, 82, 255, 0.2);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 0 rgba(0, 82, 255, 0.4), 0 20px 50px rgba(0, 82, 255, 0.15);
  animation: loop-center-pulse 3s ease-in-out infinite;
  z-index: 5;
}

@keyframes loop-center-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(0, 82, 255, 0.4), 0 20px 50px rgba(0, 82, 255, 0.15);
  }
  50% {
    box-shadow: 0 0 0 15px rgba(0, 82, 255, 0), 0 20px 60px rgba(0, 82, 255, 0.25);
  }
}

.loop-center-icon {
  color: var(--brand-blue);
  margin-bottom: 12px;
}

.loop-center strong {
  font-size: 16px;
  font-weight: 650;
  color: var(--brand-black);
}

.loop-center span {
  margin-top: 4px;
  font-size: 11px;
  color: #778295;
}

.loop-node {
  position: absolute;
  width: 140px;
  cursor: pointer;
  z-index: 10;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.loop-node-inner {
  padding: 20px 18px;
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid #d8e0ec;
  border-radius: 16px;
  text-align: center;
  transition: all 0.4s ease;
  backdrop-filter: blur(10px);
}

.loop-node-number {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--brand-blue);
  opacity: 0.5;
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.loop-node strong {
  display: block;
  font-size: 16px;
  font-weight: 650;
  color: var(--brand-black);
  margin-bottom: 4px;
}

.loop-node p {
  font-size: 12px;
  color: #778295;
  margin: 0;
}

.loop-node:hover .loop-node-inner {
  transform: translateY(-4px);
  border-color: rgba(0, 82, 255, 0.4);
  box-shadow: 0 12px 32px rgba(0, 82, 255, 0.15);
}

.loop-node.is-active .loop-node-inner {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 0 rgba(0, 82, 255, 0.4), 0 16px 40px rgba(0, 82, 255, 0.3);
  animation: loop-node-pulse 2s ease-in-out infinite;
}

.loop-node.is-active .loop-node-number,
.loop-node.is-active strong,
.loop-node.is-active p {
  color: #fff;
  opacity: 1;
}

@keyframes loop-node-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(0, 82, 255, 0.4), 0 16px 40px rgba(0, 82, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(0, 82, 255, 0), 0 16px 50px rgba(0, 82, 255, 0.4);
  }
}

.loop-node-1 { top: 20px; left: 50%; transform: translateX(-50%); }
.loop-node-2 { right: 40px; top: 50%; transform: translateY(-50%); }
.loop-node-3 { bottom: 20px; left: 50%; transform: translateX(-50%); }
.loop-node-4 { left: 40px; top: 50%; transform: translateY(-50%); }

.loop-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.loop-detail-card {
  padding: 24px;
  background: #f8fbff;
  border: 1px solid #e5ecf6;
  border-radius: 16px;
  transition: all 0.3s ease;
}

.loop-detail-card:hover {
  background: #fff;
  border-color: rgba(0, 82, 255, 0.3);
  box-shadow: 0 8px 24px rgba(0, 82, 255, 0.1);
  transform: translateX(8px);
}

.loop-detail-label {
  display: inline-block;
  padding: 4px 10px;
  background: var(--brand-blue-soft);
  color: var(--brand-blue);
  font-size: 10px;
  font-weight: 700;
  border-radius: 6px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
}

.loop-detail-card h4 {
  font-size: var(--brand-type-card);
  font-weight: 650;
  color: var(--brand-black);
  margin: 0 0 8px 0;
}

.loop-detail-card p {
  font-size: 14px;
  color: #5b6472;
  line-height: 1.6;
  margin: 0;
}

/* 闭环可视化 · 移动端
   必须放在上面的基础规则之后：媒体查询不增加优先级，
   同优先级下靠源码顺序决胜，否则 600px 的桌面尺寸会覆盖移动端。 */
@media (max-width: 640px) {
  .loop-visual-container {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .loop-circle-wrapper {
    width: min(100%, 320px);
    height: auto;
    aspect-ratio: 1 / 1;
  }
  .loop-circle-track,
  .loop-circle-flow {
    width: 72%;
    height: 72%;
  }
  .loop-center {
    width: 34%;
    height: 34%;
  }
  .loop-center-icon svg {
    width: 34px;
    height: 34px;
  }
  .loop-center strong {
    font-size: 15px;
  }
  .loop-center span {
    font-size: 10px;
  }
  /* 节点统一收窄，并用居中定位保证四向对称、不溢出 */
  .loop-node {
    width: 30%;
  }
  .loop-node-inner {
    padding: 10px 8px;
    border-radius: 12px;
  }
  .loop-node-number {
    font-size: 10px;
    margin-bottom: 4px;
  }
  .loop-node strong {
    font-size: 13px;
    margin-bottom: 2px;
  }
  .loop-node p {
    font-size: 10px;
  }
  .loop-node-1 { top: 0; left: 50%; transform: translateX(-50%); }
  .loop-node-2 { top: 50%; right: 0; left: auto; transform: translateY(-50%); }
  .loop-node-3 { bottom: 0; left: 50%; transform: translateX(-50%); }
  .loop-node-4 { top: 50%; left: 0; transform: translateY(-50%); }
}

/* ========================================
   对话式创作 Agent
   ======================================== */

.create-section {
  background: #f8fbff;
}

.create-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 64px;
}

.create-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 48px;
  align-items: start;
}

.create-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.create-feature-card {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: #fff;
  border: 1px solid #e5ecf6;
  border-radius: 16px;
  transition: all 0.3s ease;
}

.create-feature-card:hover {
  border-color: rgba(0, 82, 255, 0.3);
  box-shadow: 0 8px 24px rgba(0, 82, 255, 0.1);
  transform: translateX(8px);
}

.create-feature-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand-blue), #4A9FFF);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  border-radius: 12px;
  font-family: var(--font-mono);
}

.create-feature-content h3 {
  font-size: var(--brand-type-card);
  font-weight: 650;
  color: var(--brand-black);
  margin: 0 0 8px 0;
}

.create-feature-content p {
  font-size: 14px;
  line-height: 1.6;
  color: #5b6472;
  margin: 0;
}

.create-demo {
  position: relative;
}

.create-demo-container {
  padding: 32px;
  background: #fff;
  border: 1px solid #e5ecf6;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 82, 255, 0.08);
}

.create-user-message {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 24px;
}

.create-message-bubble {
  max-width: 80%;
  padding: 16px 20px;
  background: var(--brand-blue);
  color: #fff;
  font-size: 15px;
  line-height: 1.6;
  border-radius: 16px 16px 4px 16px;
  box-shadow: 0 4px 16px rgba(0, 82, 255, 0.2);
}

.create-ai-message {
  display: flex;
  gap: 16px;
  align-items: start;
}

.create-ai-avatar {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #eef4ff, #f8fbff);
  border: 2px solid rgba(0, 82, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.create-ai-avatar img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.create-ai-content {
  flex: 1;
}

.create-ai-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: #eef4ff;
  border: 1px solid rgba(0, 82, 255, 0.15);
  border-radius: 8px;
  font-size: 12px;
  color: var(--brand-blue);
  margin-bottom: 12px;
}

.create-status-dot {
  width: 6px;
  height: 6px;
  background: var(--brand-blue);
  border-radius: 50%;
  animation: create-status-pulse 2s ease-in-out infinite;
}

@keyframes create-status-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.create-ai-text {
  font-size: 15px;
  line-height: 1.7;
  color: #2c3441;
  margin: 0 0 20px 0;
}

.create-process-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.create-step-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: #f8fbff;
  border: 1px solid #e5ecf6;
  border-radius: 10px;
  transition: all 0.3s ease;
}

.create-step-item:hover {
  background: #fff;
  border-color: rgba(0, 82, 255, 0.3);
  transform: translateX(4px);
}

.create-step-icon {
  font-size: 20px;
  line-height: 1;
}

.create-step-text {
  flex: 1;
  font-size: 14px;
  color: #5b6472;
}

.create-step-item strong {
  font-size: 14px;
  font-weight: 650;
  color: var(--brand-blue);
}

.create-output-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.create-output-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: linear-gradient(135deg, #f8fbff 0%, #eef4ff 100%);
  border: 2px solid rgba(0, 82, 255, 0.15);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.create-output-card:hover {
  background: #fff;
  border-color: var(--brand-blue);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 82, 255, 0.15);
}

.create-output-icon {
  font-size: 32px;
  line-height: 1;
}

.create-output-info {
  flex: 1;
}

.create-output-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  color: var(--brand-blue);
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.create-output-info strong {
  display: block;
  font-size: 15px;
  font-weight: 650;
  color: var(--brand-black);
  margin-bottom: 2px;
}

.create-output-info small {
  display: block;
  font-size: 12px;
  color: #778295;
}

/* ========================================
   渠道规模 - 优化版
   ======================================== */

.dist-section {
  background: linear-gradient(180deg, #f8fbff 0%, #fff 100%);
}

.dist-layout {
  display: grid;
  grid-template-columns: 480px 1fr;
  gap: 64px;
  align-items: start;
}

.dist-hero {
  position: relative;
  padding: 48px;
  background: linear-gradient(135deg, var(--brand-blue) 0%, #0066ff 100%);
  border-radius: 24px;
  color: #fff;
  overflow: hidden;
}

.dist-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15), transparent 70%);
  border-radius: 50%;
  animation: dist-hero-glow 6s ease-in-out infinite;
}

@keyframes dist-hero-glow {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-20px, 20px) scale(1.1); }
}

.dist-hero .brand-kicker {
  position: relative;
  z-index: 1;
  color: rgba(255, 255, 255, 0.8);
}

.dist-number-wrapper {
  position: relative;
  margin: 32px 0;
  z-index: 1;
}

.dist-number {
  font-size: clamp(64px, 8vw, 88px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: #fff;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.dist-plus {
  font-size: 0.6em;
  color: rgba(255, 255, 255, 0.9);
  margin-left: 4px;
}

.dist-number-glow {
  position: absolute;
  top: 50%;
  left: 0;
  width: 200px;
  height: 80px;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.3), transparent 60%);
  transform: translateY(-50%);
  animation: dist-number-pulse 3s ease-in-out infinite;
  pointer-events: none;
}

@keyframes dist-number-pulse {
  0%, 100% { opacity: 0.5; transform: translateY(-50%) scale(1); }
  50% { opacity: 1; transform: translateY(-50%) scale(1.2); }
}

.dist-hero-desc {
  position: relative;
  z-index: 1;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.9);
  margin: 0 0 32px 0;
}

.dist-categories {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dist-category-tag {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.dist-category-tag:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateX(8px);
}

.dist-category-icon {
  font-size: 24px;
  line-height: 1;
}

.dist-category-tag strong {
  font-size: 14px;
  font-weight: 650;
  color: #fff;
}

.dist-category-tag small {
  margin-left: auto;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.7);
}

.dist-platforms {
  padding: 48px;
  background: #fff;
  border: 1px solid #e5ecf6;
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(0, 82, 255, 0.06);
}

.dist-platforms-header h3 {
  font-size: var(--brand-type-card);
  font-weight: 650;
  color: var(--brand-black);
  margin: 0 0 12px 0;
}

.dist-scale {
  color: var(--brand-blue);
  font-weight: 700;
  font-size: 0.9em;
}

.dist-platforms-header p {
  font-size: 15px;
  line-height: 1.7;
  color: #5b6472;
  margin: 0 0 32px 0;
}

.dist-platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.dist-platform-card {
  position: relative;
  min-height: 148px;
  padding: 24px 20px;
  background: #f8fbff;
  border: 2px solid #e5ecf6;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.dist-platform-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--brand-blue), #4A9FFF);
  border-radius: 16px;
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

.dist-platform-card:hover {
  transform: translateY(-8px);
  background: #fff;
  box-shadow: 0 12px 32px rgba(0, 82, 255, 0.15);
}

.dist-platform-card:hover::before {
  opacity: 1;
}

.dist-platform-card:hover {
  border-color: transparent;
}

.dist-platform-card strong {
  display: block;
  font-size: 15px;
  font-weight: 650;
  color: var(--brand-black);
  margin-bottom: 4px;
}

.dist-platform-card small {
  display: block;
  font-size: 12px;
  color: #778295;
}

.dist-tracking {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: linear-gradient(135deg, #f8fbff 0%, #eef4ff 100%);
  border: 1px solid rgba(0, 82, 255, 0.15);
  border-radius: 16px;
}

.dist-tracking-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-blue);
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 82, 255, 0.25);
}

.dist-tracking strong {
  display: block;
  font-size: 16px;
  font-weight: 650;
  color: var(--brand-black);
  margin-bottom: 6px;
}

.dist-tracking p {
  font-size: 14px;
  line-height: 1.6;
  color: #5b6472;
  margin: 0;
}

/* 渠道分发 · 平板与移动端
   必须放在上面的 .dist-* 基础规则之后：媒体查询不加优先级，
   同优先级靠源码顺序决胜，否则 480px 桌面栏宽会在窄屏溢出被裁切。 */
@media (max-width: 900px) {
  .dist-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }
  .dist-layout > * {
    min-width: 0;
    max-width: 100%;
  }
  .dist-hero,
  .dist-platforms {
    min-width: 0;
    width: 100%;
    overflow: hidden;
    box-sizing: border-box;
  }
}

@media (max-width: 640px) {
  .dist-hero,
  .dist-platforms {
    padding: 28px 20px;
    border-radius: 18px;
  }
  .dist-number {
    font-size: clamp(54px, 17vw, 76px);
  }
  .dist-hero-desc {
    font-size: 14px;
  }
  .dist-category-tag {
    min-width: 0;
    padding: 12px;
  }
  .dist-category-tag small {
    display: none;
  }
  .dist-platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .dist-platforms-header p {
    font-size: 14px;
  }
}

.agent-system-section {
  background: #f4f7fb;
}

.agent-system-intro {
  max-width: 820px;
  margin-bottom: 58px;
}

.agent-system-intro h2 {
  max-width: 18ch;
  margin-top: 22px;
}

.agent-system-intro h2 span {
  color: var(--brand-blue);
}

.agent-system-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: 64px;
  align-items: stretch;
}

.agent-system-copy {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.agent-system-human {
  padding: 24px;
  border: 1px solid var(--brand-line);
  border-left: 3px solid var(--brand-blue);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 14px 32px rgba(27, 54, 101, 0.07);
}

.agent-system-human-label {
  display: block;
  color: var(--brand-blue);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.agent-system-human strong {
  display: block;
  margin-top: 14px;
  color: var(--brand-black);
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.agent-system-human-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 10px;
  align-items: center;
  margin-top: 18px;
}

.agent-system-human-flow span {
  padding: 10px 12px;
  border-radius: 9px;
  background: var(--brand-cool);
  color: #4e5868;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
}

.agent-system-human-flow i {
  color: var(--brand-blue);
  font-size: 18px;
  font-style: normal;
}

.agent-system-principles {
  border-top: 1px solid #cfd8e6;
}

.agent-system-principle {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid #cfd8e6;
}

.agent-system-principle-index {
  color: var(--brand-blue);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.agent-system-principle strong {
  display: block;
  color: var(--brand-black);
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.agent-system-principle p {
  max-width: 38ch;
  margin-top: 7px;
  color: #596474;
  font-size: 14px;
  line-height: 1.65;
}

.agent-system-map {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: 22px;
  background: linear-gradient(135deg, #0d1526 0%, #12356f 100%);
  box-shadow: 0 24px 56px rgba(15, 37, 80, 0.18);
}

.agent-system-map::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: auto -18% -44% auto;
  width: 420px;
  height: 420px;
  pointer-events: none;
  background: radial-gradient(circle at center, rgba(0, 82, 255, 0.24), transparent 68%);
}

.agent-system-map-head,
.agent-system-map-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
}

.agent-system-map-head {
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.agent-system-map-head > span {
  color: rgba(255, 255, 255, 0.62);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.11em;
}

.agent-system-map-head b {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 11px;
  font-weight: 600;
}

.agent-system-map-head b i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #9effc0;
  box-shadow: 0 0 0 5px rgba(158, 255, 192, 0.12);
  animation: agent-system-pulse 2.2s ease-in-out infinite;
}

.agent-system-map-canvas {
  position: relative;
  min-height: 408px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 184px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 36px 24px 78px;
}

.agent-system-map-canvas::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: 50%;
  right: 13%;
  left: 13%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(148, 189, 255, 0.7), transparent);
}

.agent-system-map-canvas::after {
  content: "";
  position: absolute;
  z-index: 0;
  top: 50%;
  left: 50%;
  width: 304px;
  height: 304px;
  border: 1px dashed rgba(168, 201, 255, 0.34);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: agent-system-orbit 18s linear infinite;
}

.agent-system-rail {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 16px;
}

.agent-system-node {
  position: relative;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  min-height: 74px;
  padding: 14px;
  border: 1px solid rgba(189, 214, 255, 0.28);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transition: border-color 220ms ease, background 220ms ease, transform 220ms var(--brand-ease);
}

.agent-system-node:hover {
  border-color: rgba(255, 255, 255, 0.58);
  background: rgba(255, 255, 255, 0.16);
  transform: translateY(-3px);
}

.agent-system-node-index {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(184, 211, 255, 0.42);
  border-radius: 8px;
  color: #bdd6ff;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}

.agent-system-node strong {
  display: block;
  color: #fff;
  font-size: 14px;
  font-weight: 650;
}

.agent-system-node small {
  display: block;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 11px;
  line-height: 1.35;
}

.agent-system-node-state {
  color: #9effc0;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.agent-system-core {
  position: relative;
  z-index: 2;
  width: 184px;
  height: 184px;
  justify-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(198, 220, 255, 0.72);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #377cff 0%, #0052ff 48%, #003ec4 100%);
  box-shadow: 0 18px 44px rgba(0, 16, 74, 0.34), inset 0 0 0 9px rgba(255, 255, 255, 0.08);
  text-align: center;
}

.agent-system-core::before {
  content: "";
  position: absolute;
  inset: -13px;
  border: 1px solid rgba(175, 207, 255, 0.3);
  border-radius: 50%;
}

.agent-system-core-mark {
  color: #dbe8ff;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.agent-system-core strong {
  margin-top: 10px;
  color: #fff;
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.04em;
}

.agent-system-core small {
  margin-top: 7px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 10px;
}

.agent-system-node-review {
  position: absolute;
  z-index: 2;
  right: auto;
  bottom: 18px;
  left: 50%;
  width: min(56%, 320px);
  transform: translateX(-50%);
}

.agent-system-map-foot {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.64);
  font-size: 11px;
}

.agent-system-map-foot b {
  color: #fff;
  font-weight: 650;
  white-space: nowrap;
}

@keyframes agent-system-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.52; transform: scale(0.82); }
}

@keyframes agent-system-orbit {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

@media (max-width: 1100px) {
  .agent-system-layout {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .agent-system-copy {
    display: grid;
    grid-template-columns: minmax(240px, 0.76fr) minmax(0, 1.24fr);
    gap: 34px;
    align-items: start;
  }
}

@media (max-width: 840px) {
  .agent-system-map-canvas {
    grid-template-columns: minmax(0, 1fr) 156px minmax(0, 1fr);
    gap: 12px;
    padding-inline: 18px;
  }

  .agent-system-core {
    width: 156px;
    height: 156px;
  }

  .agent-system-core strong {
    font-size: 19px;
  }

  .agent-system-node {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 8px;
    padding: 12px 10px;
  }

  .agent-system-node-state {
    display: none;
  }

  .agent-system-node-review {
    width: min(62%, 300px);
  }
}

@media (max-width: 640px) {
  .agent-system-intro {
    margin-bottom: 38px;
  }

  .agent-system-intro h2 {
    font-size: 40px;
  }

  .agent-system-copy {
    display: flex;
    gap: 28px;
  }

  .agent-system-map {
    border-radius: 18px;
  }

  .agent-system-map-head,
  .agent-system-map-foot {
    padding-inline: 18px;
  }

  .agent-system-map-head b {
    font-size: 10px;
  }

  .agent-system-map-canvas {
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 24px 16px 18px;
  }

  .agent-system-map-canvas::before,
  .agent-system-map-canvas::after {
    display: none;
  }

  .agent-system-core {
    order: 0;
    width: 164px;
    height: 164px;
  }

  .agent-system-rail-left,
  .agent-system-rail-right {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .agent-system-rail-left { order: 1; }
  .agent-system-rail-right { order: 2; }

  .agent-system-node {
    min-height: 82px;
    padding: 12px 10px;
  }

  .agent-system-node-review {
    position: relative;
    order: 3;
    right: auto;
    bottom: auto;
    left: auto;
    width: 100%;
    transform: none;
  }

  .agent-system-map-foot {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}