:root {
  color-scheme: light;
  --ink: #101820;
  --stone: #f7f7f2;
  --paper: #fffffb;
  --mist: #edf3f4;
  --line: #d8e0df;
  --muted: #5a6768;
  --blue: #0a65b7;
  --blue-deep: #063861;
  --green: #0f7b64;
  --amber: #d99b18;
  --coral: #e8663f;
  --white: #ffffff;
  --shadow: 0 28px 80px rgba(13, 39, 54, 0.16);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--stone);
  color: var(--ink);
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  transform: translateY(-160%);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--ink);
  color: var(--white);
  font-weight: 800;
  text-decoration: none;
  transition: transform 0.16s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  min-height: 70px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 12px clamp(18px, 5vw, 76px);
  background: rgba(247, 247, 242, 0.82);
  border-bottom: 1px solid rgba(216, 224, 223, 0.64);
  backdrop-filter: blur(22px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 1.02rem;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand img {
  border-radius: 9px;
  box-shadow: 0 12px 26px rgba(10, 101, 183, 0.18);
}

.top-nav {
  display: flex;
  justify-content: flex-end;
  gap: 20px;
  color: rgba(16, 24, 32, 0.68);
  font-size: 0.94rem;
  font-weight: 700;
}

.top-nav a,
.footer-links a {
  text-decoration: none;
}

.top-nav a:hover,
.footer-links a:hover {
  color: var(--blue);
}

.language-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.language-control select {
  height: 38px;
  min-width: 112px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 32px 0 10px;
  background: rgba(255, 255, 251, 0.92);
  color: var(--ink);
  font: inherit;
}

.hero {
  position: relative;
  min-height: clamp(500px, calc(100svh - 220px), 680px);
  display: grid;
  grid-template-columns: minmax(360px, 0.8fr) minmax(520px, 1.2fr);
  align-items: center;
  gap: clamp(26px, 4vw, 62px);
  padding: clamp(38px, 5vh, 64px) clamp(22px, 7vw, 108px) 50px;
  overflow: hidden;
  color: var(--ink);
  background:
    linear-gradient(112deg, rgba(255, 255, 251, 0.96) 0%, rgba(255, 255, 251, 0.84) 39%, rgba(237, 243, 244, 0.78) 100%),
    var(--stone);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(16, 24, 32, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 24, 32, 0.035) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.58;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  z-index: 1;
  height: 32%;
  background: linear-gradient(180deg, rgba(247, 247, 242, 0) 0%, var(--stone) 100%);
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 4;
  max-width: 680px;
}

.eyebrow,
.kicker {
  margin: 0 0 16px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  max-width: 15.4ch;
  margin: 0;
  color: var(--ink);
  font-size: 4.55rem;
  line-height: 0.94;
  letter-spacing: 0;
  overflow-wrap: normal;
  white-space: pre-line;
  word-break: normal;
}

html[lang="zh"] .hero h1 {
  max-width: 7.8em;
  font-size: 3.92rem;
  line-height: 1.01;
  overflow-wrap: normal;
  white-space: pre-line;
  word-break: keep-all;
}

.hero-text {
  max-width: 600px;
  margin: 28px 0 0;
  color: rgba(16, 24, 32, 0.72);
  font-size: 1.34rem;
  line-height: 1.56;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  border-radius: 8px;
  padding: 0 20px;
  border: 1px solid transparent;
  font-size: 0.98rem;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.button.primary,
.button.dark {
  background: var(--ink);
  color: var(--white);
}

.button.secondary {
  border-color: rgba(16, 24, 32, 0.16);
  background: rgba(255, 255, 251, 0.74);
  color: var(--ink);
  backdrop-filter: blur(14px);
}

.button:focus-visible,
.brand:focus-visible,
.top-nav a:focus-visible,
.footer-links a:focus-visible,
.language-control select:focus-visible {
  outline: 3px solid rgba(10, 101, 183, 0.28);
  outline-offset: 3px;
}

.hero-visual {
  position: relative;
  z-index: 3;
  min-height: 420px;
}

.hero-stage {
  position: relative;
  width: min(760px, 100%);
  height: clamp(390px, 34vw, 530px);
  margin-left: auto;
  perspective: 1200px;
}

.stage-panel {
  position: absolute;
  inset: 7% 0 10% 8%;
  border: 1px solid rgba(16, 24, 32, 0.08);
  background:
    linear-gradient(135deg, rgba(255, 255, 251, 0.86), rgba(237, 243, 244, 0.72)),
    linear-gradient(90deg, transparent 0 72%, rgba(15, 123, 100, 0.08) 72% 73%, transparent 73%);
  box-shadow: 0 46px 120px rgba(13, 39, 54, 0.16);
  transform: rotate(-2deg) skewY(-1deg);
}

.stage-panel::before,
.stage-panel::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 18%;
  height: 2px;
  background: linear-gradient(90deg, var(--green), rgba(15, 123, 100, 0));
}

.stage-panel::before {
  top: 24%;
}

.stage-panel::after {
  top: 38%;
  background: linear-gradient(90deg, var(--amber), rgba(217, 155, 24, 0));
}

.stage-flow {
  position: absolute;
  left: 22%;
  right: 11%;
  bottom: 6%;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  height: 58px;
  transform: rotate(-1.6deg);
}

.stage-flow span {
  border-top: 9px solid var(--green);
  background: linear-gradient(180deg, rgba(255, 255, 251, 0.88), rgba(255, 255, 251, 0.18));
}

.stage-flow span:nth-child(2) {
  border-color: var(--amber);
}

.stage-flow span:nth-child(3) {
  border-color: var(--blue);
}

.stage-flow span:nth-child(4) {
  border-color: var(--coral);
}

.hero-device {
  position: absolute;
  z-index: 2;
  margin: 0;
  width: min(288px, 38%);
  aspect-ratio: 377 / 820;
  border: 9px solid #101820;
  border-radius: 44px;
  padding: 0;
  background: #101820;
  overflow: hidden;
  box-shadow:
    0 34px 92px rgba(13, 39, 54, 0.24),
    0 2px 0 rgba(255, 255, 255, 0.74) inset;
  transform-style: preserve-3d;
}

.hero-device-home {
  z-index: 5;
  top: 0;
  left: 41%;
  width: min(310px, 41%);
  transform: rotate(-1.8deg) translateZ(54px);
  animation: hero-device-rise 900ms cubic-bezier(0.19, 1, 0.22, 1) both;
}

.hero-device-parent {
  top: 24%;
  left: 10%;
  transform: rotate(-6deg) translateZ(8px);
  animation: hero-device-rise 900ms 80ms cubic-bezier(0.19, 1, 0.22, 1) both;
}

.hero-device-choice {
  z-index: 3;
  top: 20%;
  right: 0;
  transform: rotate(5deg) translateZ(18px);
  animation: hero-device-rise 900ms 140ms cubic-bezier(0.19, 1, 0.22, 1) both;
}

@keyframes hero-device-rise {
  from {
    opacity: 0;
    translate: 0 28px;
  }

  to {
    opacity: 1;
    translate: 0 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-device {
    animation: none;
  }
}

.hero-proof {
  position: absolute;
  z-index: 4;
  left: clamp(22px, 7vw, 108px);
  right: clamp(22px, 7vw, 108px);
  bottom: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-proof span {
  border: 1px solid rgba(16, 24, 32, 0.1);
  border-radius: 8px;
  padding: 9px 12px;
  background: rgba(255, 255, 251, 0.76);
  color: rgba(16, 24, 32, 0.74);
  font-size: 0.9rem;
  font-weight: 800;
  backdrop-filter: blur(12px);
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 108px 0;
}

.section-heading,
.section-copy {
  max-width: 820px;
}

.section-heading.compact {
  max-width: 700px;
}

.section h2 {
  margin: 0;
  color: var(--ink);
  font-size: 3.35rem;
  line-height: 1;
  letter-spacing: 0;
}

.section p {
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.75;
}

.large-copy {
  max-width: 880px;
  margin: 28px 0 0;
  color: rgba(16, 24, 32, 0.7);
  font-size: 1.55rem;
  line-height: 1.55;
}

.manifesto-section {
  padding-top: 30px;
}

.method-section {
  border-top: 1px solid var(--line);
}

.evidence-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 40px;
}

.evidence-grid article {
  border-top: 2px solid var(--ink);
  padding-top: 20px;
}

.evidence-grid span {
  color: var(--green);
  font-size: 0.84rem;
  font-weight: 900;
}

.evidence-grid h3 {
  margin: 18px 0 0;
  color: var(--ink);
  font-size: 1.34rem;
  line-height: 1.12;
}

.evidence-grid p {
  margin: 16px 0 0;
  font-size: 0.98rem;
  line-height: 1.65;
}

.evidence-note {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  margin-top: 42px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.evidence-note p {
  max-width: 700px;
  margin: 0;
  font-size: 0.98rem;
}

.evidence-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  max-width: 430px;
}

.evidence-links a {
  border: 1px solid rgba(16, 24, 32, 0.12);
  border-radius: 8px;
  padding: 8px 10px;
  background: rgba(255, 255, 251, 0.76);
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 800;
  text-decoration: none;
}

.evidence-links a:hover {
  border-color: rgba(10, 101, 183, 0.34);
  color: var(--blue);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 42px;
}

.method-grid article {
  min-height: 260px;
  border-top: 2px solid var(--ink);
  padding: 20px 4px 0;
}

.method-grid span {
  color: var(--amber);
  font-size: 0.84rem;
  font-weight: 900;
}

.method-grid h3 {
  min-height: 62px;
  margin: 18px 0 0;
  color: var(--ink);
  font-size: 1.42rem;
  line-height: 1.08;
}

.method-grid p {
  margin: 18px 0 0;
  font-size: 0.98rem;
  line-height: 1.65;
}

.product-section {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(360px, 1fr);
  align-items: center;
  gap: clamp(40px, 7vw, 96px);
  min-height: 920px;
}

.product-copy {
  position: sticky;
  top: 120px;
  align-self: start;
  max-width: 500px;
}

.device-gallery {
  position: relative;
  min-height: 830px;
}

.device-shot {
  position: absolute;
  margin: 0;
  width: min(270px, 42vw);
  aspect-ratio: 377 / 820;
  border-radius: 8px;
  padding: 8px;
  background: #102d45;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.primary-shot {
  top: 0;
  left: 0;
  z-index: 3;
  transform: rotate(-2.4deg);
}

.choice-shot {
  top: 92px;
  left: 30%;
  z-index: 4;
  transform: rotate(1.4deg);
}

.secondary-shot {
  top: 40px;
  right: 0;
  z-index: 2;
  transform: rotate(2.2deg);
}

.tertiary-shot {
  bottom: 0;
  left: 18%;
  z-index: 1;
  transform: rotate(-1deg);
}

.focus-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.vision-promo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.vision-promo div {
  max-width: 760px;
}

.vision-promo .button {
  flex: 0 0 auto;
}

.faq-list {
  display: grid;
  gap: 10px;
  margin-top: 34px;
}

details {
  border-top: 1px solid var(--line);
}

summary {
  cursor: pointer;
  padding: 22px 0;
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 800;
}

details p {
  max-width: 760px;
  margin: 0;
  padding: 0 0 24px;
}

.download-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  align-items: center;
  gap: clamp(28px, 6vw, 72px);
  border-top: 1px solid var(--line);
}

.download-section div {
  max-width: 720px;
}

.notify-form {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: rgba(255, 255, 251, 0.86);
  box-shadow: 0 18px 48px rgba(13, 39, 54, 0.08);
}

.notify-form input[type="email"] {
  width: 100%;
  min-height: 50px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  background: var(--white);
  color: var(--ink);
  font: inherit;
}

.notify-form input[type="email"]:focus {
  outline: 3px solid rgba(10, 101, 183, 0.16);
  border-color: var(--blue);
}

.notify-form .button {
  width: 100%;
}

.notify-form p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 34px clamp(20px, 5vw, 76px);
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.site-footer p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--ink);
  font-weight: 800;
}

.policy-main {
  width: min(980px, calc(100% - 40px));
  margin: 0 auto;
  padding: 80px 0 108px;
}

.vision-main {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
  padding: 116px 0 118px;
}

.policy {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(30px, 6vw, 70px);
  background: var(--paper);
  box-shadow: 0 18px 48px rgba(13, 39, 54, 0.08);
}

.vision-article {
  padding: 0;
  background: transparent;
}

.policy h1,
.vision-article h1 {
  max-width: 900px;
  margin: 0;
  color: var(--ink);
  font-size: 4.2rem;
  line-height: 0.98;
}

.policy .lead,
.vision-article .lead {
  margin-top: 28px;
  color: rgba(16, 24, 32, 0.76);
  font-size: 1.35rem;
  line-height: 1.62;
}

.policy .updated {
  margin-top: 16px;
  color: var(--muted);
  font-weight: 750;
}

.policy section,
.vision-article section {
  padding-top: 34px;
}

.vision-article section {
  display: grid;
  grid-template-columns: minmax(180px, 0.36fr) minmax(0, 1fr);
  gap: clamp(24px, 6vw, 84px);
  padding: 42px 0;
  border-top: 1px solid var(--line);
}

.policy h2,
.vision-article h2 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 1.55rem;
}

.vision-article h2 {
  margin: 0;
}

.policy p,
.policy li,
.vision-article p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.76;
}

.vision-article section p {
  margin: 0;
  max-width: 680px;
}

.policy ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

.vision-hero-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  color: var(--green);
  font-weight: 900;
}

.vision-hero-mark img {
  width: 48px;
  height: 48px;
  border-radius: 10px;
}

.mock-screen {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-radius: 34px;
  padding: 22px 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 251, 0.98), rgba(247, 247, 242, 0.96)),
    var(--paper);
  color: var(--ink);
  overflow: hidden;
}

.device-shot .mock-screen {
  border-radius: 6px;
  padding: 24px 19px;
}

.mock-status,
.mock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.mock-status {
  min-height: 28px;
  color: rgba(16, 24, 32, 0.58);
  font-size: 0.72rem;
  font-weight: 850;
}

.mock-status span:first-child {
  color: var(--ink);
}

.mock-card,
.mock-panel,
.mock-insight-row span,
.mock-timeline span,
.mock-plan-steps span,
.mock-conversation span,
.mock-choice-card,
.mock-resource-note,
.mock-action-grid span,
.mock-choice-actions span,
.mock-action-list span {
  border: 1px solid rgba(16, 24, 32, 0.09);
  border-radius: 8px;
  background: rgba(255, 255, 251, 0.84);
  box-shadow: 0 10px 26px rgba(13, 39, 54, 0.06);
}

.mock-card,
.mock-panel {
  padding: 16px;
}

.mock-card p,
.mock-panel p,
.mock-card span,
.mock-panel span,
.mock-row span {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.35;
}

.mock-card p,
.mock-panel p {
  color: var(--ink);
  font-weight: 850;
}

.mock-panel h4 {
  margin: 8px 0 8px;
  color: var(--ink);
  font-size: 1.06rem;
  line-height: 1.08;
}

.mock-panel strong,
.mock-row strong {
  color: var(--ink);
  font-size: 0.84rem;
}

.mock-prompt {
  border-color: rgba(10, 101, 183, 0.18);
  background: rgba(237, 243, 244, 0.78);
}

.balance-panel {
  margin-top: 10px;
  background: rgba(255, 255, 251, 0.92);
}

.balance-panel strong {
  display: block;
  margin-top: 6px;
  font-size: 1.22rem;
}

.mock-insight-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.mock-insight-row span {
  min-height: 64px;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 10px;
}

.mock-insight-row strong {
  color: var(--ink);
  font-size: 0.94rem;
  line-height: 1;
}

.mock-insight-row small {
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 850;
  line-height: 1.12;
}

.mock-timeline,
.mock-plan-steps,
.mock-conversation {
  display: grid;
  gap: 7px;
}

.mock-timeline span,
.mock-plan-steps span,
.mock-conversation span {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 9px;
  color: var(--ink);
  font-size: 0.62rem;
  font-weight: 850;
  line-height: 1.12;
}

.mock-timeline b,
.mock-timeline em {
  min-width: 0;
  font-style: normal;
}

.mock-timeline em {
  flex: 0 0 auto;
  color: var(--green);
  font-weight: 900;
}

.mock-timeline span:nth-child(2) em {
  color: var(--coral);
}

.mock-action-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: auto;
}

.mock-action-grid span,
.mock-action-list span {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 850;
  line-height: 1.12;
  text-align: center;
}

.mock-action-grid span:first-child {
  background: var(--blue);
  color: var(--white);
}

.mock-action-grid span:nth-child(2) {
  background: var(--coral);
  color: var(--white);
}

.choice-panel {
  margin-top: 12px;
  border-color: rgba(10, 101, 183, 0.16);
  background: rgba(237, 243, 244, 0.78);
}

.mock-choice-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.mock-choice-card {
  min-height: 128px;
  display: grid;
  align-content: space-between;
  gap: 8px;
  padding: 12px 10px;
}

.mock-choice-card small,
.mock-choice-card em {
  color: var(--muted);
  font-size: 0.62rem;
  font-style: normal;
  font-weight: 850;
  line-height: 1.14;
}

.mock-choice-card strong {
  color: var(--ink);
  font-size: 1.12rem;
  line-height: 1;
}

.mock-choice-card.keep {
  background: rgba(255, 255, 251, 0.92);
}

.mock-choice-card.goal {
  border-color: rgba(15, 123, 100, 0.16);
  background: rgba(237, 243, 244, 0.78);
}

.mock-resource-note {
  padding: 11px;
  color: var(--ink);
  font-size: 0.66rem;
  font-weight: 850;
  line-height: 1.2;
  text-align: center;
}

.mock-choice-actions {
  display: grid;
  gap: 8px;
  margin-top: auto;
}

.mock-choice-actions span {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 850;
  line-height: 1.12;
  text-align: center;
}

.mock-choice-actions span:first-child {
  background: var(--blue);
  color: var(--white);
}

.mock-choice-actions span:nth-child(2) {
  background: var(--green);
  color: var(--white);
}

.goal-panel {
  margin-top: 42px;
  margin-bottom: 0;
}

.mock-plan-steps {
  margin-top: 12px;
}

.mock-plan-steps span {
  justify-content: flex-start;
  border-color: rgba(15, 123, 100, 0.14);
  background: rgba(237, 243, 244, 0.72);
}

.mock-progress {
  height: 9px;
  margin: 18px 0 12px;
  border-radius: 999px;
  background: rgba(16, 24, 32, 0.09);
  overflow: hidden;
}

.mock-progress span {
  display: block;
  width: 37%;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
}

.parent-summary {
  margin-top: 18px;
  border-color: rgba(15, 123, 100, 0.18);
  background: rgba(237, 243, 244, 0.82);
}

.mock-conversation {
  margin-top: 4px;
}

.mock-conversation span {
  justify-content: flex-start;
  background: rgba(255, 255, 251, 0.9);
}

.mock-action-list {
  display: grid;
  gap: 8px;
  margin-top: auto;
}

.mock-action-list span:first-child {
  background: var(--blue);
  color: var(--white);
}

.mock-action-list span:nth-child(2) {
  background: var(--coral);
  color: var(--white);
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .top-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .language-control {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
  }

  .hero {
    min-height: clamp(600px, calc(100svh - 240px), 760px);
    grid-template-columns: 1fr;
    align-items: flex-start;
    gap: 0;
  }

  .hero::before {
    opacity: 0.44;
  }

  h1 {
    max-width: 12.2ch;
    font-size: 4.45rem;
  }

  html[lang="zh"] .hero h1 {
    max-width: 7.4em;
    font-size: 3.7rem;
  }

  .hero-visual {
    position: absolute;
    z-index: 1;
    right: -120px;
    bottom: -6px;
    width: min(620px, 78vw);
    height: 500px;
    min-height: 0;
    opacity: 0.48;
    pointer-events: none;
  }

  .hero-stage {
    width: 100%;
    height: 100%;
    margin: 0;
  }

  .hero-proof {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    margin-top: 28px;
    padding-right: 34%;
  }

  .method-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .evidence-grid,
  .evidence-note {
    grid-template-columns: 1fr;
  }

  .evidence-links {
    justify-content: flex-start;
    max-width: none;
  }

  .product-section,
  .download-section {
    grid-template-columns: 1fr;
  }

  .product-copy {
    position: static;
    max-width: 760px;
  }

  .vision-promo,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .site-header {
    gap: 12px;
    padding: 10px 16px;
  }

  .brand span {
    font-size: 0.98rem;
  }

  .language-control span {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .top-nav {
    gap: 14px;
    font-size: 0.87rem;
  }

  .hero {
    min-height: 0;
    grid-template-columns: 1fr;
    align-items: stretch;
    gap: 0;
    padding: 38px 18px 34px;
  }

  h1 {
    max-width: 11.8ch;
    font-size: 3.02rem;
  }

  html[lang="zh"] .hero h1 {
    max-width: 7.4em;
    font-size: 2.48rem;
  }

  .hero-text {
    margin-top: 20px;
    font-size: 1rem;
    line-height: 1.5;
  }

  .hero-actions {
    gap: 8px;
    margin-top: 22px;
  }

  .button {
    width: 100%;
  }

  .hero-actions .button {
    width: auto;
    flex: 1 1 0;
    min-width: 0;
    min-height: 48px;
    padding: 0 10px;
    white-space: normal;
    font-size: 0.86rem;
    line-height: 1.12;
    text-align: center;
  }

  .hero-visual {
    display: none;
  }

  .hero-proof {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    margin-top: 34px;
    padding-right: 24%;
  }

  .hero-proof span {
    padding: 8px 10px;
    font-size: 0.78rem;
  }

  .section {
    width: min(100% - 32px, 1120px);
    padding: 72px 0;
  }

  .manifesto-section {
    padding-top: 30px;
  }

  .section h2,
  .policy h1,
  .vision-article h1 {
    font-size: 2.55rem;
  }

  .large-copy {
    font-size: 1.16rem;
  }

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

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

  .evidence-note {
    gap: 20px;
  }

  .evidence-links a {
    flex: 1 1 calc(50% - 10px);
    text-align: center;
  }

  .method-grid article {
    min-height: 0;
  }

  .product-section {
    min-height: 0;
    gap: 32px;
  }

  .device-gallery {
    min-height: 0;
    display: grid;
    gap: 18px;
  }

  .device-shot {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    width: min(320px, 100%);
    aspect-ratio: 377 / 660;
    margin: 0 auto;
    transform: none;
    box-shadow: 0 22px 58px rgba(13, 39, 54, 0.16);
  }

  .primary-shot {
    top: auto;
    left: auto;
  }

  .secondary-shot {
    top: auto;
    right: auto;
  }

  .tertiary-shot {
    top: auto;
    left: auto;
    bottom: auto;
  }

  .device-shot .mock-screen {
    border-radius: 6px;
    padding: 18px 16px;
  }

  .mock-card,
  .mock-panel {
    padding: 14px;
  }

  .mock-timeline span,
  .mock-plan-steps span,
  .mock-conversation span {
    min-height: 32px;
  }

  .policy-main,
  .vision-main {
    width: min(100% - 28px, 980px);
    padding: 48px 0 72px;
  }

  .vision-article section {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 30px 0;
  }
}