:root {
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-warm: #fff7ed;
  --surface: #ffffff;
  --surface-2: #f3f4f6;
  --text: #111827;
  --text-soft: #334155;
  --muted: #64748b;
  --muted-2: #94a3b8;
  --border: rgba(15, 23, 42, 0.1);
  --brand: #ff6a00;
  --brand-hover: #ff7a1a;
  --brand-deep: #c94f00;
  --brand-soft: rgba(255, 106, 0, 0.1);
  --brand-border: rgba(255, 106, 0, 0.26);
  --brand-shadow: rgba(255, 106, 0, 0.18);
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 16px 40px rgba(15, 23, 42, 0.08);
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 22px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    sans-serif;
  letter-spacing: 0;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(to bottom, black 0%, transparent 72%);
  mask-image: linear-gradient(to bottom, black 0%, transparent 72%);
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3 {
  margin: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 8px 12px;
  color: #ffffff;
  background: var(--text);
  border-radius: 8px;
  transform: translateY(-160%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: var(--header-height);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: calc(100% - 32px);
  max-width: 1200px;
  min-height: var(--header-height);
  margin: 0 auto;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: max-content;
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: #ffffff;
  background: var(--brand);
  border-radius: 8px;
  box-shadow: 0 12px 28px var(--brand-shadow);
}

.brand-text {
  font-size: 0.95rem;
}

.site-header-simple .brand {
  min-width: 0;
}

.site-header-simple .brand-text {
  max-width: min(78vw, 680px);
  font-size: 0.98rem;
  line-height: 1.25;
}

.home-page .brand {
  min-width: 0;
}

.home-page .brand-text {
  max-width: min(78vw, 680px);
  font-size: 0.98rem;
  line-height: 1.25;
}

.split-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(132px, 1fr));
  gap: 10px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 800;
  white-space: nowrap;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.nav-icon {
  display: inline-grid;
  width: 20px;
  height: 20px;
  margin-right: 6px;
  place-items: center;
  color: var(--brand-deep);
}

.nav-cta:hover,
.nav-cta.is-active {
  color: var(--brand-deep);
  background: var(--bg-warm);
  border-color: var(--brand-border);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

.module {
  position: relative;
  overflow: hidden;
}

.module-publisher {
  background:
    linear-gradient(180deg, rgba(255, 247, 237, 0.72) 0%, rgba(255, 255, 255, 0) 34%),
    var(--bg);
}

.module-observer {
  background:
    linear-gradient(180deg, rgba(255, 247, 237, 0.72) 0%, rgba(255, 255, 255, 0) 34%),
    var(--bg);
}

.section-shell {
  width: calc(100% - 32px);
  max-width: 1200px;
  margin: 0 auto;
  padding: 92px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr);
  align-items: center;
  gap: 56px;
}

.hero-grid-reverse {
  grid-template-columns: minmax(320px, 0.92fr) minmax(0, 1.08fr);
}

.hero-grid-reverse .hero-copy {
  order: 2;
}

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

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 30px;
  padding: 0 10px;
  color: var(--brand-deep);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
  background: var(--brand-soft);
  border: 1px solid var(--brand-border);
  border-radius: 8px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: var(--brand);
  border-radius: 50%;
  box-shadow: 0 0 0 0 var(--brand-shadow);
  animation: pulse 1.8s ease-out infinite;
}

.hero-copy h1 {
  max-width: 11em;
  margin-top: 22px;
  font-size: 4.75rem;
  font-weight: 900;
  line-height: 1.03;
}

.hero-copy h1 span {
  padding: 0 0.12em 0.06em;
  color: var(--brand-deep);
  background:
    linear-gradient(180deg, transparent 48%, rgba(255, 106, 0, 0.2) 48%),
    linear-gradient(90deg, rgba(255, 247, 237, 0.94), rgba(255, 237, 213, 0.88));
  border-radius: 6px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.hero-subtitle {
  max-width: 620px;
  margin-top: 24px;
  color: var(--text-soft);
  font-size: 1.28rem;
  font-weight: 650;
  line-height: 1.55;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 18px;
  gap: 8px;
  font-size: 1rem;
  font-weight: 850;
  border-radius: 8px;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.button-primary {
  color: #ffffff;
  background: var(--brand);
  border: 1px solid var(--brand);
  box-shadow: 0 12px 28px var(--brand-shadow);
}

.button-primary:hover {
  background: var(--brand-hover);
  border-color: var(--brand-hover);
  box-shadow: 0 16px 36px rgba(255, 106, 0, 0.24);
  transform: translateY(-2px);
}

.button-secondary {
  color: var(--text);
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.14);
}

.button-secondary:hover {
  color: var(--brand-deep);
  background: var(--bg-warm);
  border-color: rgba(255, 106, 0, 0.45);
  transform: translateY(-2px);
}

.hero-visual,
.dialogue-visual {
  position: relative;
  min-height: 430px;
}

.lab-board {
  position: relative;
  width: min(100%, 500px);
  min-height: 430px;
  margin-left: auto;
  padding: 28px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(255, 106, 0, 0.12), rgba(248, 250, 252, 0.82)),
    #ffffff;
  border: 1px solid var(--brand-border);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
}

.lab-board::before,
.lab-board::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(255, 106, 0, 0.24);
  border-radius: 999px;
}

.lab-board::before {
  right: -82px;
  bottom: -74px;
  width: 250px;
  height: 250px;
}

.lab-board::after {
  top: 92px;
  right: 58px;
  width: 78px;
  height: 78px;
}

.lab-topline,
.lab-flow {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.lab-number {
  position: relative;
  z-index: 1;
  margin-top: 30px;
  color: var(--brand);
  font-size: 9rem;
  font-weight: 950;
  line-height: 0.9;
}

.lab-label {
  position: relative;
  z-index: 1;
  margin-top: 6px;
  color: var(--text);
  font-size: 2.25rem;
  font-weight: 900;
}

.lab-title-cn {
  position: relative;
  z-index: 1;
  display: grid;
  max-width: 9.2em;
  margin-top: 68px;
  gap: 16px;
  color: var(--text);
  font-size: 4.65rem;
  font-weight: 950;
  line-height: 0.96;
}

.lab-title-cn span:first-child {
  color: var(--brand);
}

.lab-title-cn span:last-child {
  color: var(--text);
  font-size: 0.54em;
  line-height: 1.12;
}

.talk-board .lab-title-cn {
  max-width: 8.4em;
  font-size: 4.35rem;
}

.talk-board .lab-number {
  font-size: 7.6rem;
}

.talk-board .lab-label {
  max-width: 9em;
  font-size: 2rem;
  line-height: 1.06;
}

.lab-flow {
  position: absolute;
  right: 28px;
  bottom: 28px;
  left: 28px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.lab-flow span {
  display: grid;
  min-height: 44px;
  place-items: center;
  color: var(--brand-deep);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--brand-border);
  border-radius: 8px;
}

.stat-strip,
.participation-strip {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 54px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(255, 247, 237, 0.98), rgba(255, 255, 255, 0.94) 54%, rgba(240, 249, 255, 0.78)),
    #ffffff;
  border: 1px solid rgba(255, 106, 0, 0.2);
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.07);
}

.stat-strip::before,
.participation-strip::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  content: "";
  background: linear-gradient(90deg, var(--brand), #fbbf24, #38bdf8);
}

.stat-strip div,
.participation-strip div {
  position: relative;
  min-height: 112px;
  padding: 24px;
  border-right: 1px solid rgba(255, 106, 0, 0.16);
}

.stat-strip div:last-child,
.participation-strip div:last-child {
  border-right: 0;
}

.stat-strip strong,
.participation-strip strong {
  display: inline-flex;
  width: fit-content;
  min-height: 34px;
  padding: 2px 10px;
  align-items: center;
  color: var(--brand-deep);
  font-size: 1.38rem;
  line-height: 1.2;
  background: rgba(255, 106, 0, 0.1);
  border: 1px solid rgba(255, 106, 0, 0.16);
  border-radius: 8px;
}

.stat-strip span,
.participation-strip span {
  display: block;
  margin-top: 10px;
  color: var(--text-soft);
  font-size: 0.96rem;
}

.copy-block {
  max-width: 900px;
  margin-top: 72px;
  padding-left: 28px;
  color: var(--text-soft);
  font-size: 1.22rem;
  font-weight: 520;
  line-height: 1.9;
  border-left: 4px solid var(--brand);
}

.copy-block p + p {
  margin-top: 18px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-top: 90px;
  gap: 22px;
}

.section-heading h2 {
  max-width: 760px;
  font-size: 2.7rem;
  font-weight: 900;
  line-height: 1.15;
}

#guest-wall {
  display: grid;
  justify-content: center;
  justify-items: center;
  text-align: center;
}

#guest-wall h2 {
  width: min(100%, 820px);
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
}

#publisher-values {
  display: grid;
  justify-content: center;
  justify-items: center;
  text-align: center;
}

#publisher-values h2 {
  width: min(100%, 820px);
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.value-card,
.guest-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition:
    transform 200ms ease,
    border-color 200ms ease,
    box-shadow 200ms ease,
    background 200ms ease;
}

.value-card {
  min-height: 246px;
  padding: 24px;
  outline: none;
}

.value-card:hover,
.value-card:focus-visible,
.value-card.is-tapped,
.guest-card:hover {
  background: #ffffff;
  border-color: rgba(255, 106, 0, 0.32);
  box-shadow: var(--shadow-md);
  --tilt-lift: -3px;
  --tilt-scale: 1.01;
  --tilt-glow: 1;
}

.card-icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  color: var(--brand-deep);
  font-size: 0.92rem;
  font-weight: 950;
  background: var(--brand-soft);
  border: 1px solid var(--brand-border);
  border-radius: 8px;
}

.value-card h3 {
  margin-top: 22px;
  font-size: 1.38rem;
  font-weight: 900;
}

.value-card p {
  margin-top: 10px;
  color: var(--text-soft);
  font-size: 1rem;
  line-height: 1.75;
}

.module-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 58px;
  padding: 28px;
  gap: 20px;
  color: var(--text);
  background: var(--bg-warm);
  border: 1px solid var(--brand-border);
  border-radius: 8px;
}

.module-cta p {
  max-width: 760px;
  font-size: 1.6rem;
  font-weight: 900;
  line-height: 1.35;
}

.dialogue-visual {
  display: grid;
  min-height: 430px;
  place-items: center;
}

.dialogue-node {
  position: absolute;
  display: grid;
  width: 176px;
  height: 176px;
  place-items: center;
  color: var(--text);
  font-size: 2.3rem;
  font-weight: 950;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
}

.node-ai {
  top: 78px;
  left: 36px;
  color: var(--brand-deep);
  border-color: var(--brand-border);
}

.node-human {
  right: 46px;
  bottom: 70px;
}

.dialogue-line {
  width: 72%;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), rgba(15, 23, 42, 0.2));
  transform: rotate(-23deg);
}

.dialogue-question {
  position: absolute;
  display: grid;
  width: 76px;
  height: 76px;
  place-items: center;
  color: #ffffff;
  font-size: 2.4rem;
  font-weight: 950;
  background: var(--brand);
  border-radius: 8px;
  box-shadow: 0 16px 36px var(--brand-shadow);
}

.guest-wall {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.guest-card {
  min-height: 300px;
  padding: 18px;
  text-align: center;
}

.avatar {
  display: block;
  width: 128px;
  height: 128px;
  max-width: 100%;
  margin: 0 auto;
  overflow: hidden;
  object-fit: cover;
  object-position: center 32%;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 50%;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

.guest-card h3 {
  margin-top: 16px;
  font-size: 1.12rem;
  font-weight: 900;
}

.guest-card p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.guest-note {
  width: fit-content;
  max-width: 100%;
  margin: 14px auto 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 650;
  background: transparent;
  border: 0;
}

.copy-block-observer {
  margin-top: 58px;
}

.module-observer .participation-strip {
  margin-top: 48px;
}

.site-footer {
  background: #ffffff;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: calc(100% - 32px);
  max-width: 1200px;
  min-height: 92px;
  margin: 0 auto;
  gap: 20px;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-header-simple {
  min-height: 72px;
}

.site-header-simple .header-inner {
  min-height: 72px;
}

.home-main {
  position: relative;
  min-height: calc(100svh - 72px);
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 247, 237, 0.78) 0%, rgba(255, 255, 255, 0) 42%),
    var(--bg);
}

.home-main::before,
.home-main::after {
  position: absolute;
  inset: 0;
  z-index: 0;
  content: "";
  pointer-events: none;
}

.home-main::before {
  background:
    radial-gradient(circle at 18% 18%, rgba(255, 255, 255, 0.78), transparent 32%),
    radial-gradient(circle at 82% 24%, rgba(14, 165, 233, 0.12), transparent 30%),
    linear-gradient(118deg, rgba(255, 255, 255, 0.86) 0%, rgba(255, 247, 237, 0.76) 28%, rgba(255, 106, 0, 0.11) 48%, rgba(14, 165, 233, 0.09) 70%, rgba(251, 191, 36, 0.12) 100%),
    conic-gradient(from 220deg at 62% 38%, rgba(255, 255, 255, 0.58), rgba(255, 237, 213, 0.24), rgba(255, 106, 0, 0.1), rgba(14, 165, 233, 0.09), rgba(255, 255, 255, 0.2), rgba(255, 247, 237, 0.34));
  background-size: 170% 170%, 160% 160%, 180% 180%, 180% 180%;
  opacity: 0.9;
  animation: homeGradientDrift 12s ease-in-out infinite;
}

.home-main::after {
  background:
    linear-gradient(115deg, transparent 0 36%, rgba(255, 106, 0, 0.2) 46%, transparent 58% 100%),
    linear-gradient(28deg, transparent 0 40%, rgba(14, 165, 233, 0.1) 50%, transparent 62% 100%),
    radial-gradient(circle at 68% 70%, rgba(255, 106, 0, 0.12), transparent 34%);
  background-size: 190% 190%, 180% 180%, 150% 150%;
  mix-blend-mode: multiply;
  opacity: 0;
  animation: homeSignalSweep 9s ease-in-out infinite;
}

.home-shell {
  position: relative;
  z-index: 1;
  display: grid;
  width: calc(100% - 32px);
  max-width: 1200px;
  min-height: calc(100svh - 72px);
  margin: 0 auto;
  padding: 82px 0;
  align-content: center;
  gap: 38px;
}

.home-intro {
  max-width: 860px;
}

.home-intro h1,
.form-copy h1 {
  margin-top: 18px;
  color: var(--text);
  font-size: 4.2rem;
  font-weight: 950;
  line-height: 1.05;
}

.home-intro p:last-child,
.form-copy p:last-child {
  max-width: 680px;
  margin-top: 18px;
  color: var(--text-soft);
  font-size: 1.14rem;
  font-weight: 620;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.entry-card {
  position: relative;
  display: grid;
  min-height: 360px;
  padding: 30px;
  align-content: space-between;
  gap: 24px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition:
    transform 200ms ease,
    border-color 200ms ease,
    box-shadow 200ms ease,
    background 200ms ease;
}

.entry-card:hover {
  background: var(--bg-warm);
  border-color: var(--brand-border);
  box-shadow: var(--shadow-md);
  --tilt-lift: -3px;
  --tilt-scale: 1.01;
  --tilt-glow: 1;
}

.entry-label {
  display: inline-flex;
  width: fit-content;
  min-height: 34px;
  padding: 0 12px;
  align-items: center;
  color: var(--brand-deep);
  font-size: 0.9rem;
  font-weight: 950;
  background: var(--brand-soft);
  border: 1px solid var(--brand-border);
  border-radius: 8px;
}

.entry-card h2 {
  max-width: 10em;
  margin-top: 22px;
  font-size: 2.6rem;
  font-weight: 950;
  line-height: 1.12;
}

.entry-card p {
  max-width: 560px;
  margin-top: 16px;
  color: var(--text-soft);
  font-size: 1.04rem;
  line-height: 1.75;
}

.entry-guests {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.entry-guest {
  display: grid;
  justify-items: center;
  gap: 5px;
  min-width: 0;
  text-align: center;
}

.entry-guest-avatar {
  display: block;
  width: 52px;
  height: 52px;
  overflow: hidden;
  object-fit: cover;
  object-position: center 32%;
  background: #ffffff;
  border: 1px solid var(--brand-border);
  border-radius: 50%;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
}

.entry-guest-name {
  max-width: 100%;
  color: var(--text);
  font-size: 0.76rem;
  font-weight: 900;
  line-height: 1.2;
}

.entry-guest-note {
  grid-column: 1 / -1;
  justify-self: center;
  width: fit-content;
  margin-top: 2px;
  padding: 3px 8px;
  color: var(--muted-2);
  font-size: 0.62rem;
  font-weight: 800;
  line-height: 1;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.entry-action {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  color: var(--brand-deep);
  font-weight: 900;
}

.form-main {
  min-height: calc(100svh - var(--header-height));
  padding: 70px 0;
  background:
    linear-gradient(180deg, rgba(255, 247, 237, 0.78) 0%, rgba(255, 255, 255, 0) 48%),
    var(--bg);
}

.form-shell {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1fr);
  width: calc(100% - 32px);
  max-width: 1120px;
  margin: 0 auto;
  gap: 56px;
  align-items: start;
}

.form-copy {
  position: sticky;
  top: calc(var(--header-height) + 32px);
}

.form-copy h1 {
  font-size: 3.45rem;
}

.submission-form {
  display: grid;
  gap: 0;
  padding: 6px 0 0;
  background: transparent;
  border-top: 1px solid rgba(15, 23, 42, 0.12);
  box-shadow: none;
}

.field {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.1);
}

.field > span,
.option-group legend {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 900;
}

.field em {
  color: var(--muted);
  font-style: normal;
  font-weight: 700;
}

input[type="text"],
textarea {
  width: 100%;
  color: var(--text);
  font: inherit;
  background: rgba(248, 250, 252, 0.86);
  border: 1px solid transparent;
  border-radius: 8px;
  outline: none;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

input[type="text"] {
  min-height: 54px;
  padding: 0 16px;
}

textarea {
  min-height: 132px;
  padding: 14px 16px;
  resize: vertical;
}

input[type="text"]:focus,
textarea:focus {
  background: #ffffff;
  border-color: rgba(255, 106, 0, 0.48);
  box-shadow: 0 10px 28px rgba(255, 106, 0, 0.1);
}

.option-group {
  padding: 22px 0;
  border: 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 0;
}

.option-group label {
  display: flex;
  align-items: flex-start;
  margin-top: 10px;
  padding: 13px 14px;
  gap: 10px;
  color: var(--text-soft);
  font-weight: 650;
  line-height: 1.55;
  background: rgba(248, 250, 252, 0.7);
  border: 1px solid transparent;
  border-radius: 8px;
  transition:
    border-color 160ms ease,
    background 160ms ease,
    transform 160ms ease;
}

.option-group label:hover {
  background: #ffffff;
  border-color: rgba(255, 106, 0, 0.26);
  transform: translateY(-1px);
}

.option-group input {
  -webkit-appearance: none;
  appearance: none;
  display: grid;
  place-content: center;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  flex: 0 0 auto;
  background: #ffffff;
  border: 1.5px solid rgba(100, 116, 139, 0.42);
  border-radius: 50%;
  box-shadow: none;
}

.option-group input::before {
  width: 9px;
  height: 9px;
  content: "";
  background: var(--brand);
  border-radius: 50%;
  transform: scale(0);
  transition: transform 120ms ease;
}

.option-group input:checked {
  border-color: var(--brand);
  box-shadow: none;
}

.option-group input:checked::before {
  transform: scale(1);
}

.option-group input:focus-visible {
  outline: 2px solid rgba(255, 106, 0, 0.22);
  outline-offset: 2px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 24px;
  gap: 12px;
}

.form-status {
  min-height: 26px;
  color: var(--brand-deep);
  font-weight: 800;
}

.form-status.is-error {
  color: #b42318;
}

.success-main {
  display: grid;
  min-height: calc(100svh - var(--header-height));
  padding: 70px 0;
  place-items: center;
  background:
    linear-gradient(180deg, rgba(255, 247, 237, 0.78) 0%, rgba(255, 255, 255, 0) 48%),
    var(--bg);
}

.success-shell {
  display: grid;
  width: calc(100% - 32px);
  max-width: 720px;
  justify-items: center;
  gap: 18px;
  padding: 54px 32px;
  text-align: center;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--brand-border);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
}

.success-shell h1 {
  color: var(--text);
  font-size: 3.6rem;
  font-weight: 950;
  line-height: 1.05;
}

.success-shell p {
  max-width: 560px;
  color: var(--text-soft);
  font-size: 1.08rem;
  font-weight: 650;
}

.success-countdown {
  color: var(--muted);
}

.success-countdown span {
  color: var(--brand-deep);
  font-weight: 950;
}

.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 560ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 560ms cubic-bezier(0.22, 1, 0.36, 1);
}

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

.tilt-card {
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  --tilt-lift: 0px;
  --tilt-scale: 1;
  --tilt-glow: 0;
  --glow-x: 50%;
  --glow-y: 50%;
  --reveal-offset: 0px;
  overflow: hidden;
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateY(calc(var(--reveal-offset) + var(--tilt-lift))) scale(var(--tilt-scale));
  transform-style: preserve-3d;
  will-change: transform;
}

.tilt-card.is-resetting {
  transition:
    transform 160ms cubic-bezier(0.22, 1, 0.36, 1),
    border-color 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.tilt-card::before {
  position: absolute;
  inset: -1px;
  z-index: 0;
  content: "";
  pointer-events: none;
  background: radial-gradient(
    260px circle at var(--glow-x) var(--glow-y),
    rgba(255, 106, 0, 0.18),
    rgba(255, 106, 0, 0.06) 34%,
    transparent 66%
  );
  opacity: var(--tilt-glow);
  transition: opacity 180ms ease;
}

.tilt-card > * {
  position: relative;
  z-index: 1;
}

.tilt-card .card-icon,
.tilt-card .entry-label,
.tilt-card .entry-action,
.tilt-card .avatar {
  transform: translateZ(22px);
}

.js .reveal.tilt-card {
  --reveal-offset: 22px;
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateY(calc(var(--reveal-offset) + var(--tilt-lift))) scale(var(--tilt-scale));
}

.js .reveal.tilt-card.is-visible {
  --reveal-offset: 0px;
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateY(calc(var(--reveal-offset) + var(--tilt-lift))) scale(var(--tilt-scale));
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 106, 0, 0.34);
  }

  70% {
    box-shadow: 0 0 0 9px rgba(255, 106, 0, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(255, 106, 0, 0);
  }
}

@keyframes homeGradientDrift {
  0% {
    background-position: 72% 12%, 18% 22%, 78% 12%, 62% 30%;
  }

  50% {
    background-position: 28% 44%, 86% 30%, 42% 58%, 26% 66%;
  }

  100% {
    background-position: 72% 12%, 18% 22%, 78% 12%, 62% 30%;
  }
}

@keyframes homeSignalSweep {
  0% {
    opacity: 0;
    background-position: 120% 0%, -40% 120%, 74% 82%;
  }

  18% {
    opacity: 0.18;
  }

  34% {
    opacity: 0.82;
    background-position: 32% 42%, 62% 34%, 44% 48%;
  }

  58% {
    opacity: 0.16;
  }

  100% {
    opacity: 0;
    background-position: 120% 0%, -40% 120%, 74% 82%;
  }
}

@media (max-width: 1024px) {
  :root {
    --header-height: 122px;
  }

  .header-inner {
    display: grid;
    grid-template-columns: 1fr;
    padding: 12px 0;
    gap: 10px;
  }

  .brand {
    justify-content: center;
  }

  .split-nav {
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-header-simple .header-inner {
    display: grid;
    grid-template-columns: 1fr;
    min-height: 72px;
    padding: 12px 0;
    gap: 10px;
  }

  .site-header-simple .brand {
    justify-content: center;
  }

  .form-shell {
    grid-template-columns: 1fr;
  }

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

  .hero-grid,
  .hero-grid-reverse {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .hero-grid-reverse .hero-copy {
    order: 0;
  }

  .hero-copy h1 {
    max-width: 11.5em;
    font-size: 3.7rem;
  }

  .hero-subtitle {
    font-size: 1.16rem;
  }

  .hero-visual,
  .dialogue-visual {
    min-height: 360px;
  }

  .lab-board {
    min-height: 360px;
    margin-right: auto;
  }

  .lab-number {
    font-size: 7.2rem;
  }

  .lab-label {
    font-size: 1.75rem;
  }

  .lab-title-cn {
    margin-top: 50px;
    font-size: 3.7rem;
  }

  .talk-board .lab-title-cn {
    font-size: 3.45rem;
  }

  .value-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .guest-wall {
    grid-template-columns: repeat(5, minmax(166px, 1fr));
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
  }

  .footer-inner {
    display: block;
    padding: 22px 0;
  }

  .footer-inner p + p {
    margin-top: 8px;
  }
}

@media (max-width: 767px) {
  :root {
    --header-height: 118px;
  }

  body::before {
    background-size: 36px 36px;
  }

  .header-inner,
  .section-shell,
  .home-shell,
  .form-shell,
  .footer-inner {
    width: calc(100% - 28px);
  }

  .site-header-simple {
    min-height: 68px;
  }

  .site-header-simple .header-inner {
    min-height: 68px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .brand-text {
    font-size: 0.9rem;
  }

  .nav-cta {
    min-height: 42px;
    padding: 0 10px;
    font-size: 0.9rem;
  }

  .section-shell {
    padding: 62px 0;
  }

  .home-main,
  .home-shell {
    min-height: auto;
  }

  .home-shell {
    padding: 54px 0 64px;
    gap: 24px;
  }

  .home-intro h1,
  .form-copy h1 {
    font-size: 2.65rem;
    line-height: 1.1;
  }

  .home-intro p:last-child,
  .form-copy p:last-child {
    font-size: 1rem;
  }

  .entry-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .entry-card {
    min-height: 300px;
    padding: 22px;
  }

  .entry-card h2 {
    font-size: 2rem;
  }

  .entry-guests {
    grid-template-columns: repeat(5, minmax(54px, 1fr));
    gap: 7px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .entry-guest-avatar {
    width: 52px;
    height: 52px;
  }

  .entry-guest-name {
    font-size: 0.7rem;
  }

  .entry-guest-note {
    font-size: 0.58rem;
  }

  .form-main {
    padding: 42px 0;
  }

  .submission-form {
    padding: 4px 0 0;
  }

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

  .hero-copy h1 {
    margin-top: 18px;
    font-size: 3rem;
    line-height: 1.08;
  }

  .hero-subtitle {
    margin-top: 18px;
    font-size: 1.05rem;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 26px;
  }

  .button {
    width: 100%;
    min-height: 48px;
    padding: 0 14px;
  }

  .hero-visual,
  .dialogue-visual {
    min-height: 310px;
  }

  .lab-board {
    min-height: 310px;
    padding: 20px;
  }

  .lab-number {
    margin-top: 24px;
    font-size: 6rem;
  }

  .lab-label {
    font-size: 1.45rem;
  }

  .lab-title-cn {
    margin-top: 38px;
    gap: 10px;
    font-size: 2.8rem;
  }

  .talk-board .lab-title-cn {
    font-size: 2.56rem;
  }

  .lab-flow {
    right: 20px;
    bottom: 20px;
    left: 20px;
    grid-template-columns: repeat(2, 1fr);
  }

  .lab-flow span {
    min-height: 38px;
  }

  .stat-strip,
  .participation-strip {
    grid-template-columns: 1fr;
    margin-top: 38px;
  }

  .stat-strip div,
  .participation-strip div {
    min-height: auto;
    padding: 20px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 106, 0, 0.16);
  }

  .stat-strip div:last-child,
  .participation-strip div:last-child {
    border-bottom: 0;
  }

  .copy-block {
    margin-top: 50px;
    padding-left: 18px;
    font-size: 1.05rem;
  }

  .section-heading {
    display: block;
    margin-top: 64px;
  }

  .section-heading h2 {
    margin-top: 12px;
    font-size: 2rem;
  }

  #guest-wall h2 {
    margin-top: 0;
  }

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

  .value-card {
    min-height: auto;
    padding: 22px;
  }

  .module-cta {
    display: block;
    margin-top: 42px;
    padding: 22px;
  }

  .module-cta p {
    margin-bottom: 18px;
    font-size: 1.35rem;
  }

  .dialogue-node {
    width: 132px;
    height: 132px;
    font-size: 1.8rem;
  }

  .node-ai {
    top: 42px;
    left: 0;
  }

  .node-human {
    right: 0;
    bottom: 48px;
  }

  .dialogue-question {
    width: 64px;
    height: 64px;
    font-size: 2rem;
  }

  .guest-wall {
    display: flex;
    gap: 12px;
    margin-right: -14px;
    overflow-x: auto;
    scroll-snap-type: x proximity;
  }

  .guest-card {
    flex: 0 0 190px;
    min-height: 292px;
    scroll-snap-align: start;
  }

  .guest-note {
    font-size: 0.74rem;
    line-height: 1.5;
  }
}

@media (max-width: 390px) {
  .hero-copy h1 {
    font-size: 2.55rem;
  }

  .section-heading h2 {
    font-size: 1.8rem;
  }

  .nav-icon {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}