:root {
  --v2-ink: #12201a;
  --v2-muted: #637068;
  --v2-green: #1f5b42;
  --v2-green-dark: #123b2b;
  --v2-green-light: #e1eee6;
  --v2-paper: #fffdf8;
  --v2-cream: #f5f1e8;
  --v2-coral: #ee8968;
  --v2-yellow: #e9b84d;
  --v2-line: rgba(18, 32, 26, 0.11);
  --v2-shadow: 0 24px 80px rgba(24, 55, 42, 0.12);
}

body {
  background: var(--v2-paper);
  color: var(--v2-ink);
}

.container {
  max-width: 1200px;
}

nav {
  background: rgba(255, 253, 248, 0.86);
  border-color: rgba(18, 32, 26, 0.08);
}

nav .container {
  padding-top: 13px;
  padding-bottom: 13px;
}

.nav-brand-text {
  color: var(--v2-ink);
  letter-spacing: -0.04em;
}

.nav-brand-sub {
  font-size: 10px;
  letter-spacing: 0.15em;
}

.nav-links {
  gap: 28px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 650;
}

.nav-download {
  background: var(--v2-ink);
  padding: 10px 18px;
}

.hero {
  min-height: 720px;
  padding: 104px 0 92px;
  display: flex;
  align-items: center;
  background:
    radial-gradient(circle at 12% 15%, rgba(238, 137, 104, 0.13), transparent 28%),
    radial-gradient(circle at 88% 18%, rgba(233, 184, 77, 0.12), transparent 30%),
    linear-gradient(180deg, #fffdf8 0%, #f8f4eb 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.36;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(31, 91, 66, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 91, 66, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 90%);
}

.hero-grid {
  position: relative;
  grid-template-columns: minmax(0, 0.9fr) minmax(520px, 1.1fr);
  gap: 72px;
}

.hero-copy {
  position: relative;
  z-index: 3;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  color: var(--v2-green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.eyebrow span {
  width: 26px;
  height: 1px;
  background: var(--v2-green);
}

.hero h1 {
  max-width: 560px;
  margin-bottom: 26px;
  color: var(--v2-ink);
  font-size: clamp(52px, 6.4vw, 78px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.065em;
}

.hero h1 .gradient {
  background: linear-gradient(112deg, var(--v2-green) 0%, #39775b 52%, #d27a5b 125%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-desc {
  max-width: 570px;
  margin-bottom: 34px;
  color: #546159;
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  margin-bottom: 34px;
}

.btn {
  min-height: 52px;
  border-radius: 16px;
  padding: 14px 23px;
  font-size: 15px;
}

.btn-primary {
  background: var(--v2-ink);
  box-shadow: 0 12px 30px rgba(18, 32, 26, 0.2);
}

.btn-primary:hover {
  box-shadow: 0 16px 38px rgba(18, 32, 26, 0.25);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.72);
  border-color: var(--v2-line);
}

.hero-meta {
  gap: 14px 22px;
  font-size: 13px;
}

.hero-meta-item svg {
  stroke: var(--v2-green);
}

.product-stage {
  position: relative;
  min-height: 536px;
  isolation: isolate;
}

.stage-glow {
  position: absolute;
  inset: 58px 40px 34px;
  z-index: -2;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 91, 66, 0.15), rgba(31, 91, 66, 0) 67%);
  filter: blur(6px);
}

.stage-host {
  position: absolute;
  z-index: 3;
  width: 226px;
  padding: 17px 18px 15px;
  border: 1px solid rgba(18, 32, 26, 0.1);
  border-radius: 20px;
  background: rgba(255, 253, 248, 0.92);
  box-shadow: 0 16px 46px rgba(24, 55, 42, 0.12);
  backdrop-filter: blur(16px);
}

.stage-host-built-in {
  left: 0;
  top: 38px;
  animation: v2-host-float 5.6s ease-in-out infinite;
}

.stage-host-desktop {
  right: 0;
  bottom: 68px;
  animation: v2-host-float 5.6s 1.1s ease-in-out infinite reverse;
}

.host-kicker {
  display: block;
  margin-bottom: 11px;
  color: #8a948e;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.host-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 850;
}

.host-icon {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  overflow: hidden;
  border-radius: 11px;
  background: #f4ede3;
}

.host-icon svg {
  width: 30px;
  height: 30px;
}

.host-icon-line svg {
  width: 19px;
  height: 19px;
  stroke: var(--v2-ink);
  stroke-width: 1.8;
}

.stage-host p {
  margin: 11px 0 12px;
  color: var(--v2-muted);
  font-size: 12px;
  line-height: 1.65;
}

.host-status {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--v2-green);
  font-size: 11px;
  font-weight: 750;
}

.host-status i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #38a06c;
  box-shadow: 0 0 0 4px rgba(56, 160, 108, 0.13);
}

.stage-phone {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 4;
  width: 246px;
  transform: translate(
    calc(-50% + var(--stage-x, 0px)),
    var(--stage-y, 0px)
  ) rotate(1.5deg);
  animation: v2-phone-float 6s ease-in-out infinite;
  will-change: transform;
}

.stage-phone-shell {
  padding: 9px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 37px;
  background: #101713;
  box-shadow: 0 36px 80px rgba(18, 32, 26, 0.28);
}

.stage-phone-screen {
  min-height: 472px;
  overflow: hidden;
  border-radius: 29px;
  background: #f5f0e6;
}

.stage-status {
  display: flex;
  justify-content: space-between;
  padding: 14px 18px 8px;
  color: #6a756e;
  font-size: 8px;
  font-weight: 800;
}

.stage-appbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px 14px;
  border-bottom: 1px solid rgba(18, 32, 26, 0.07);
  font-size: 12px;
  font-weight: 850;
}

.stage-appbar svg {
  width: 26px;
  height: 26px;
}

.stage-appbar i {
  width: 7px;
  height: 7px;
  margin-left: auto;
  border-radius: 50%;
  background: #3da170;
}

.stage-task {
  margin: 20px 14px 12px;
  padding: 17px 15px;
  border: 1px solid rgba(18, 32, 26, 0.08);
  border-radius: 19px;
  background: #fffdf8;
  box-shadow: 0 10px 24px rgba(18, 32, 26, 0.07);
}

.stage-task-label {
  display: block;
  margin-bottom: 8px;
  color: #879189;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.stage-task strong {
  display: block;
  font-size: 12px;
  line-height: 1.55;
}

.stage-progress {
  display: grid;
  gap: 11px;
  margin-top: 18px;
  padding-top: 15px;
  border-top: 1px solid rgba(18, 32, 26, 0.08);
}

.stage-step {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #59665e;
  font-size: 9px;
}

.stage-step i {
  display: grid;
  width: 17px;
  height: 17px;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #e1eee6;
  color: var(--v2-green);
  font-size: 9px;
  font-style: normal;
  font-weight: 900;
}

.stage-step.active i {
  border: 2px solid rgba(31, 91, 66, 0.2);
  border-top-color: var(--v2-green);
  background: transparent;
  animation: v2-spin 1.2s linear infinite;
}

.stage-evidence {
  display: grid;
  gap: 8px;
  margin: 0 14px;
  padding: 13px 15px;
  border-radius: 15px;
  background: rgba(31, 91, 66, 0.06);
  color: #667269;
  font-size: 8px;
}

.stage-evidence span {
  display: flex;
  align-items: center;
  gap: 7px;
}

.stage-evidence i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.stage-evidence .green { background: #3da170; }
.stage-evidence .coral { background: var(--v2-coral); }

.stage-phone-caption {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
  color: var(--v2-muted);
  font-size: 11px;
  font-weight: 750;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3da170;
  box-shadow: 0 0 0 5px rgba(61, 161, 112, 0.12);
}

.stage-lines {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.stage-line {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 7px;
  width: 96px;
}

.stage-line::before {
  content: "";
  width: 67px;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(31, 91, 66, 0.06),
    rgba(31, 91, 66, 0.45),
    rgba(31, 91, 66, 0.06)
  );
  background-size: 200% 100%;
  animation: v2-data-flow 2.2s linear infinite;
}

.stage-line b {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--v2-green);
  animation: v2-dots 1.8s infinite ease-in-out;
}

.stage-line b:nth-child(2) { animation-delay: 0.18s; }
.stage-line b:nth-child(3) { animation-delay: 0.36s; }

.stage-line-left {
  top: 178px;
  left: 138px;
}

.stage-line-right {
  right: 124px;
  bottom: 224px;
  transform: rotate(180deg);
}

.v2-section {
  position: relative;
  padding: 112px 0;
}

.v2-heading {
  max-width: 720px;
  margin: 0 auto 54px;
  text-align: center;
}

.v2-heading-left {
  max-width: 760px;
  margin-left: 0;
  text-align: left;
}

.section-label {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--v2-green);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.18em;
}

.v2-heading h2,
.loop-copy h2,
.safety-copy h2 {
  margin-bottom: 18px;
  color: var(--v2-ink);
  font-size: clamp(34px, 4.3vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.045em;
}

.v2-heading p,
.loop-copy > p,
.safety-copy > p {
  color: var(--v2-muted);
  font-size: 17px;
  line-height: 1.85;
}

.modes-section {
  background: #fffdf8;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.mode-card {
  position: relative;
  overflow: hidden;
  min-height: 590px;
  padding: 38px 40px 36px;
  border: 1px solid var(--v2-line);
  border-radius: 30px;
  background: #f7f2e9;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.mode-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--v2-shadow);
}

.mode-card::after {
  content: "";
  position: absolute;
  top: -110px;
  right: -90px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(238, 137, 104, 0.12);
}

.mode-card-dark {
  border-color: rgba(255, 255, 255, 0.08);
  background: var(--v2-ink);
  color: #fff;
}

.mode-card-dark::after {
  background: rgba(233, 184, 77, 0.13);
}

.mode-topline {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 48px;
}

.mode-topline span {
  color: var(--v2-green);
  font-size: 13px;
  font-weight: 900;
}

.mode-card-dark .mode-topline span { color: #96d0ae; }

.mode-topline em {
  padding: 7px 11px;
  border: 1px solid rgba(18, 32, 26, 0.12);
  border-radius: 999px;
  color: var(--v2-muted);
  font-size: 11px;
  font-style: normal;
  font-weight: 750;
}

.mode-card-dark .mode-topline em {
  border-color: rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.63);
}

.mode-icon {
  position: relative;
  z-index: 1;
  display: grid;
  width: 64px;
  height: 64px;
  margin-bottom: 25px;
  place-items: center;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.09);
}

.mode-icon svg {
  width: 30px;
  height: 30px;
  stroke: currentColor;
  stroke-width: 1.7;
}

.mode-icon-logo {
  background: #fff;
  box-shadow: 0 10px 24px rgba(18, 32, 26, 0.08);
}

.mode-icon-logo svg {
  width: 54px;
  height: 54px;
}

.mode-card h3 {
  position: relative;
  z-index: 1;
  margin-bottom: 13px;
  font-size: 28px;
  letter-spacing: -0.035em;
}

.mode-lead {
  position: relative;
  z-index: 1;
  min-height: 84px;
  color: var(--v2-muted);
  font-size: 15px;
  line-height: 1.8;
}

.mode-card-dark .mode-lead { color: rgba(255, 255, 255, 0.65); }

.mode-steps {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
  margin: 25px 0 30px;
  list-style: none;
}

.mode-steps li {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 13px 14px;
  border: 1px solid rgba(18, 32, 26, 0.08);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.55);
}

.mode-card-dark .mode-steps li {
  border-color: rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.04);
}

.mode-steps li > span {
  display: grid;
  width: 27px;
  height: 27px;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 9px;
  background: var(--v2-green-light);
  color: var(--v2-green);
  font-size: 10px;
  font-weight: 900;
}

.mode-card-dark .mode-steps li > span {
  background: rgba(150, 208, 174, 0.13);
  color: #96d0ae;
}

.mode-steps strong,
.mode-steps small {
  display: block;
}

.mode-steps strong {
  margin-bottom: 2px;
  font-size: 13px;
}

.mode-steps small {
  color: var(--v2-muted);
  font-size: 11px;
}

.mode-card-dark .mode-steps small { color: rgba(255, 255, 255, 0.5); }

.mode-link {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--v2-green);
  font-size: 13px;
  font-weight: 850;
  text-decoration: none;
}

.mode-card-dark .mode-link { color: #a9dabd; }

.loop-section {
  overflow: hidden;
  background: var(--v2-cream);
}

.loop-layout {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  align-items: center;
  gap: 70px;
}

.loop-copy h2 {
  font-size: clamp(36px, 4.4vw, 52px);
}

.loop-proof {
  display: grid;
  gap: 1px;
  margin-top: 36px;
  overflow: hidden;
  border: 1px solid var(--v2-line);
  border-radius: 20px;
  background: var(--v2-line);
}

.loop-proof div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
  padding: 17px 18px;
  background: rgba(255, 253, 248, 0.74);
}

.loop-proof strong { font-size: 13px; }
.loop-proof span { color: var(--v2-muted); font-size: 12px; }

.loop-visual {
  position: relative;
  min-height: 500px;
}

.loop-center {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 3;
  display: grid;
  width: 158px;
  height: 158px;
  place-items: center;
  align-content: center;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 50%;
  background: #fffdf8;
  box-shadow: 0 25px 60px rgba(24, 55, 42, 0.15);
  transform: translate(-50%, -50%);
}

.loop-center svg { width: 61px; height: 61px; }
.loop-center svg {
  animation: v2-logo-orbit 14s linear infinite;
}
.loop-center strong { margin-top: -7px; font-size: 14px; }
.loop-center span { color: var(--v2-muted); font-size: 9px; }

.loop-orbit {
  position: absolute;
  inset: 40px 18px;
  width: calc(100% - 36px);
  height: calc(100% - 80px);
  overflow: visible;
}

.loop-orbit path {
  fill: none;
  stroke: rgba(31, 91, 66, 0.22);
  stroke-width: 1.5;
  stroke-dasharray: 6 8;
  animation: v2-orbit-flow 14s linear infinite;
}

.loop-node {
  position: absolute;
  z-index: 4;
  width: 166px;
  padding: 17px 18px;
  border: 1px solid rgba(18, 32, 26, 0.09);
  border-radius: 18px;
  background: rgba(255, 253, 248, 0.93);
  box-shadow: 0 14px 40px rgba(24, 55, 42, 0.1);
}

.loop-node > span {
  display: block;
  margin-bottom: 12px;
  color: var(--v2-green);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.loop-node strong,
.loop-node small { display: block; }
.loop-node strong { margin-bottom: 4px; font-size: 15px; }
.loop-node small { color: var(--v2-muted); font-size: 10px; }
.loop-node-observe { top: 40px; left: 30px; }
.loop-node-act { top: 91px; right: 7px; }
.loop-node-verify { right: 96px; bottom: 22px; }

.loop-node-observe { animation: v2-node-float 5s ease-in-out infinite; }
.loop-node-act { animation: v2-node-float 5.4s 0.8s ease-in-out infinite reverse; }
.loop-node-verify { animation: v2-node-float 5.2s 1.4s ease-in-out infinite; }

.examples-section {
  background: #fffdf8;
}

.task-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.task-card {
  display: flex;
  min-height: 286px;
  padding: 27px;
  flex-direction: column;
  border: 1px solid var(--v2-line);
  border-radius: 23px;
  background: #faf7f0;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.task-card:hover {
  transform: translateY(-3px);
  border-color: rgba(31, 91, 66, 0.24);
}

.task-card-wide {
  grid-column: span 2;
  background:
    radial-gradient(circle at 90% 0%, rgba(238, 137, 104, 0.17), transparent 36%),
    #f3eee4;
}

.task-card-accent {
  color: #fff;
  background: var(--v2-green-dark);
}

.task-icon {
  display: grid;
  width: 43px;
  height: 43px;
  margin-bottom: 27px;
  place-items: center;
  border-radius: 14px;
  background: var(--v2-green-light);
  color: var(--v2-green);
}

.task-icon.coral { color: #b65d42; background: rgba(238, 137, 104, 0.15); }
.task-icon.yellow { color: #92701b; background: rgba(233, 184, 77, 0.18); }
.task-icon.green { color: var(--v2-green); background: var(--v2-green-light); }
.task-card-accent .task-icon { color: #fff; background: rgba(255, 255, 255, 0.11); }
.task-icon svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.task-tag {
  margin-bottom: 8px;
  color: var(--v2-muted);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.task-card-accent .task-tag { color: rgba(255, 255, 255, 0.57); }

.task-card h3 {
  max-width: 590px;
  font-size: 19px;
  line-height: 1.6;
  letter-spacing: -0.02em;
}

.task-card-wide h3 { font-size: 24px; }

.task-result {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 24px;
  color: var(--v2-muted);
  font-size: 11px;
}

.task-card-accent .task-result { color: rgba(255, 255, 255, 0.62); }

.task-result i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3da170;
  box-shadow: 0 0 0 4px rgba(61, 161, 112, 0.12);
}

.safety-section {
  padding-top: 60px;
  background: #fffdf8;
}

.safety-panel {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 70px;
  padding: 64px;
  border-radius: 34px;
  color: #fff;
  background:
    radial-gradient(circle at 2% 0%, rgba(238, 137, 104, 0.18), transparent 32%),
    radial-gradient(circle at 100% 100%, rgba(233, 184, 77, 0.14), transparent 35%),
    var(--v2-ink);
}

.safety-copy .section-label { color: #9fd1b3; }
.safety-copy h2 { color: #fff; }
.safety-copy > p { color: rgba(255, 255, 255, 0.64); font-size: 15px; }

.safety-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}

.safety-badges span {
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.67);
  font-size: 10px;
  font-weight: 750;
}

.safety-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.safety-item {
  padding: 23px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.045);
}

.safety-num {
  margin-bottom: 28px;
  color: #9fd1b3;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.safety-item strong {
  display: block;
  margin-bottom: 8px;
  font-size: 15px;
}

.safety-item p {
  color: rgba(255, 255, 255, 0.53);
  font-size: 11px;
  line-height: 1.75;
}

.download-section {
  padding: 112px 0;
  background: #fffdf8;
}

.download-card {
  padding: 68px 44px 48px;
  border-radius: 34px;
  background:
    radial-gradient(circle at 8% 0%, rgba(238, 137, 104, 0.18), transparent 31%),
    radial-gradient(circle at 90% 100%, rgba(233, 184, 77, 0.15), transparent 31%),
    #f3eee4;
  box-shadow: none;
}

.download-card::before { display: none; }

.download-eyebrow {
  display: block;
  margin-bottom: 16px;
  color: var(--v2-green);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.17em;
}

.download-card h2 {
  color: var(--v2-ink);
  font-size: clamp(34px, 4.4vw, 50px);
  letter-spacing: -0.045em;
}

.download-card .lead {
  color: var(--v2-muted);
}

.download-btn {
  border-radius: 15px;
  background: var(--v2-ink);
  box-shadow: 0 13px 30px rgba(18, 32, 26, 0.2);
}

.download-meta {
  color: var(--v2-muted);
}

.wechat-follow {
  max-width: 540px;
  margin: 34px auto 0;
  border-color: var(--v2-line);
  background: rgba(255, 253, 248, 0.7);
}

footer {
  border-top: 1px solid var(--v2-line);
  background: #fffdf8;
}

.v2-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.72s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0ms),
    transform 0.72s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0ms);
}

.v2-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.mode-card.v2-reveal.is-visible:hover,
.task-card.v2-reveal.is-visible:hover {
  transform: translateY(-4px);
}

.v2-pointer-glow {
  isolation: isolate;
}

.v2-pointer-glow::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(
    260px circle at var(--pointer-x, 50%) var(--pointer-y, 50%),
    rgba(132, 195, 158, 0.14),
    transparent 68%
  );
  transition: opacity 0.28s ease;
}

.mode-card-primary.v2-pointer-glow::before,
.task-card.v2-pointer-glow::before {
  background: radial-gradient(
    260px circle at var(--pointer-x, 50%) var(--pointer-y, 50%),
    rgba(238, 137, 104, 0.16),
    transparent 68%
  );
}

.v2-pointer-glow:hover::before {
  opacity: 1;
}

.v2-pointer-glow > * {
  position: relative;
  z-index: 1;
}

@keyframes v2-spin {
  to { transform: rotate(360deg); }
}

@keyframes v2-dots {
  0%, 65%, 100% { opacity: 0.22; transform: scale(0.75); }
  35% { opacity: 1; transform: scale(1); }
}

@keyframes v2-phone-float {
  0%, 100% {
    transform: translate(
      calc(-50% + var(--stage-x, 0px)),
      calc(var(--stage-y, 0px) - 3px)
    ) rotate(1.2deg);
  }
  50% {
    transform: translate(
      calc(-50% + var(--stage-x, 0px)),
      calc(var(--stage-y, 0px) + 7px)
    ) rotate(1.8deg);
  }
}

@keyframes v2-host-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

@keyframes v2-data-flow {
  to { background-position: -200% 0; }
}

@keyframes v2-orbit-flow {
  to { stroke-dashoffset: -140; }
}

@keyframes v2-logo-orbit {
  to { transform: rotate(360deg); }
}

@keyframes v2-node-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@media (max-width: 1050px) {
  .hero {
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 72px;
  }

  .hero-copy {
    max-width: 760px;
    text-align: center;
    margin: 0 auto;
  }

  .eyebrow,
  .hero-actions,
  .hero-meta {
    justify-content: center;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .product-stage {
    width: min(660px, 100%);
    margin: 0 auto;
  }

  .loop-layout,
  .safety-panel {
    grid-template-columns: 1fr;
  }

  .loop-copy {
    max-width: 720px;
  }

  .loop-visual {
    width: min(640px, 100%);
    margin: 0 auto;
  }
}

@media (max-width: 780px) {
  nav .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .nav-brand-sub { display: none; }
  .nav-download { padding: 9px 13px; font-size: 12px; }

  .hero {
    padding: 74px 0 64px;
  }

  .hero-grid {
    gap: 54px;
  }

  .hero h1 {
    font-size: clamp(46px, 14vw, 64px);
  }

  .hero-desc {
    font-size: 16px;
  }

  .product-stage {
    min-height: 650px;
  }

  .stage-phone {
    top: 76px;
  }

  .stage-host {
    width: calc(50% - 8px);
    padding: 14px;
  }

  .stage-host-built-in {
    top: 0;
    left: 0;
  }

  .stage-host-desktop {
    top: 0;
    right: 0;
    bottom: auto;
  }

  .stage-host p,
  .host-status {
    display: none;
  }

  .host-kicker {
    margin-bottom: 8px;
  }

  .host-title {
    align-items: flex-start;
    font-size: 12px;
  }

  .host-icon {
    width: 29px;
    height: 29px;
  }

  .host-icon svg {
    width: 25px;
    height: 25px;
  }

  .stage-lines { display: none; }

  .v2-section {
    padding: 78px 0;
  }

  .v2-heading {
    margin-bottom: 38px;
  }

  .v2-heading h2,
  .loop-copy h2,
  .safety-copy h2 {
    font-size: 36px;
  }

  .v2-heading p,
  .loop-copy > p {
    font-size: 15px;
  }

  .mode-grid,
  .task-grid {
    grid-template-columns: 1fr;
  }

  .mode-card {
    min-height: 0;
    padding: 27px 22px 26px;
    border-radius: 24px;
  }

  .mode-topline {
    margin-bottom: 32px;
  }

  .mode-lead {
    min-height: 0;
  }

  .task-card-wide {
    grid-column: auto;
  }

  .task-card,
  .task-card-wide {
    min-height: 250px;
  }

  .task-card-wide h3 {
    font-size: 20px;
  }

  .loop-layout {
    gap: 34px;
  }

  .loop-proof div {
    grid-template-columns: 88px 1fr;
  }

  .loop-visual {
    min-height: 430px;
    transform: scale(0.91);
  }

  .loop-node {
    width: 142px;
    padding: 14px;
  }

  .loop-node-observe { left: 0; }
  .loop-node-act { right: 0; }
  .loop-node-verify { right: 30px; }

  .safety-section {
    padding-top: 20px;
  }

  .safety-panel {
    gap: 40px;
    padding: 38px 22px 24px;
    border-radius: 27px;
  }

  .safety-grid {
    grid-template-columns: 1fr;
  }

  .safety-item {
    padding: 19px;
  }

  .safety-num {
    margin-bottom: 15px;
  }

  .download-section {
    padding: 76px 0;
  }

  .download-card {
    padding: 48px 20px 28px;
    border-radius: 27px;
  }

  .wechat-follow {
    text-align: left;
  }
}

@media (max-width: 430px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .nav-brand {
    gap: 8px;
  }

  .brand-logo {
    width: 31px;
    height: 31px;
  }

  .nav-brand-text {
    font-size: 17px;
  }

  .nav-download {
    width: 42px;
    height: 42px;
    padding: 0;
    justify-content: center;
    font-size: 0;
  }

  .nav-download svg {
    display: block;
    width: 17px;
    height: 17px;
  }

  .hero {
    padding-top: 62px;
  }

  .eyebrow {
    font-size: 10px;
  }

  .hero h1 {
    font-size: 49px;
  }

  .hero-desc br {
    display: none;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .btn {
    justify-content: center;
  }

  .hero-meta {
    display: grid;
    grid-template-columns: repeat(2, max-content);
    text-align: left;
  }

  .product-stage {
    min-height: 625px;
  }

  .stage-phone {
    width: 225px;
  }

  .stage-phone-screen {
    min-height: 438px;
  }

  .stage-host {
    min-height: 79px;
  }

  .mode-card h3 {
    font-size: 25px;
  }

  .v2-heading h2,
  .loop-copy h2,
  .safety-copy h2 {
    font-size: 32px;
  }

  .loop-visual {
    margin: -20px -23px;
  }

  .loop-center {
    width: 132px;
    height: 132px;
  }

  .loop-center svg {
    width: 53px;
    height: 53px;
  }

  .loop-node {
    width: 128px;
  }

  .loop-node small {
    font-size: 8px;
  }

  .wechat-follow {
    display: grid;
    justify-items: center;
    text-align: center;
  }
}

@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;
  }

  .v2-reveal {
    opacity: 1;
    transform: none;
  }
}