@font-face {
  font-family: "Inter";
  src: url("./fonts/InterVariable.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg-base: #f5efe6;
  --surface: #fffaf4;
  --surface-muted: #efe4d5;
  --surface-deep: #e7d7c3;
  --ink: #241c17;
  --muted: #6e6054;
  --accent: #d8aa45;
  --accent-soft: #f2dfad;
  --line: rgba(54, 37, 23, 0.12);
  --line-strong: rgba(54, 37, 23, 0.2);
  --cta-bg: #2f241a;
  --cta-surface: #f9efe0;
  --decision-bg: #31261d;
  --decision-line: rgba(255, 245, 231, 0.12);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --shadow-soft: 0 18px 42px rgba(43, 30, 18, 0.08);
  --shadow-card: 0 26px 56px rgba(47, 36, 26, 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.46), transparent 32%),
    linear-gradient(180deg, #f8f2e9 0%, var(--bg-base) 22%, #f1e7da 100%);
  color: var(--ink);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

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

button,
input {
  font: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245, 239, 230, 0.84);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(47, 36, 26, 0.08);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(calc(100% - 40px), 1200px);
  margin: 0 auto;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand__mark {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background:
    radial-gradient(circle at 30% 30%, #fbefc8 0 18%, transparent 19%),
    linear-gradient(135deg, #efc862, #c98a25);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.5);
}

.brand__text {
  font-size: 1.2rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: rgba(36, 28, 23, 0.72);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav .nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 20px;
  border-radius: 12px;
  border: 1px solid rgba(169, 119, 28, 0.18);
  background: linear-gradient(180deg, #f4d27c, #deae4d);
  color: #2f241a;
  font-weight: 700;
  font-size: 0.94rem;
  letter-spacing: 0.01em;
  text-shadow: none;
  box-shadow: 0 12px 24px rgba(216, 170, 69, 0.26);
}

.page-shell {
  width: min(calc(100% - 40px), 1200px);
  margin: 0 auto;
}

.hero--centered {
  padding: 72px 0 36px;
}

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

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid rgba(216, 170, 69, 0.18);
  border-radius: 999px;
  background: rgba(255, 250, 244, 0.78);
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 14ch;
  margin: 20px 0 0;
  font-size: clamp(2.9rem, 5vw, 4.75rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.hero__summary {
  max-width: 760px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.75;
}

.hero__form-wrap {
  width: min(100%, 620px);
  margin-top: 28px;
}

.waitlist-form__field {
  display: flex;
  gap: 12px;
  padding: 8px;
  border: 1px solid rgba(216, 170, 69, 0.16);
  border-radius: 18px;
  background: rgba(255, 250, 244, 0.92);
  box-shadow: var(--shadow-soft);
}

.waitlist-form__field--stack {
  max-width: 560px;
  margin: 0 auto;
}

.waitlist-form input {
  flex: 1;
  min-width: 0;
  min-height: 56px;
  padding: 0 18px;
  border: 0;
  background: transparent;
  color: var(--ink);
  outline: none;
}

.waitlist-form input::placeholder {
  color: rgba(110, 96, 84, 0.64);
}

.waitlist-form button {
  min-width: 180px;
  min-height: 56px;
  padding: 0 24px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(180deg, #f4d27c, #deae4d);
  color: #2f241a;
  font-weight: 700;
  box-shadow: 0 12px 24px rgba(216, 170, 69, 0.22);
  cursor: pointer;
}

.waitlist-form__hint,
.waitlist-form__feedback {
  margin: 12px 0 0;
  color: rgba(110, 96, 84, 0.86);
  font-size: 0.92rem;
  text-align: center;
}

.waitlist-form__feedback {
  min-height: 1.4em;
}

.hero__shot {
  width: min(100%, 980px);
  margin: 46px auto 0;
}

.hero-engine {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid rgba(216, 170, 69, 0.14);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at top right, rgba(232, 196, 110, 0.32), transparent 36%),
    linear-gradient(180deg, rgba(255, 251, 246, 0.98), rgba(246, 236, 223, 0.94));
  box-shadow: var(--shadow-card);
}

.hero-engine::after {
  content: "";
  position: absolute;
  inset: auto auto 18px 18px;
  width: 140px;
  height: 140px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(216, 170, 69, 0.18), transparent 72%);
  pointer-events: none;
}

.hero-engine__topline {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.hero-engine__eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-engine h2 {
  margin: 0;
  font-size: clamp(1.75rem, 2.6vw, 2.5rem);
  letter-spacing: -0.04em;
}

.hero-engine__tag,
.hero-engine__scenario-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 14px;
  border: 1px solid rgba(47, 36, 26, 0.08);
  border-radius: 999px;
  background: rgba(255, 250, 244, 0.88);
  color: rgba(47, 36, 26, 0.76);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.hero-engine__metrics {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.hero-engine__metric-card,
.hero-engine__scenario {
  border: 1px solid rgba(47, 36, 26, 0.08);
  border-radius: 20px;
  background: rgba(255, 250, 244, 0.84);
  box-shadow: 0 10px 22px rgba(48, 36, 24, 0.05);
}

.hero-engine__metric-card {
  padding: 18px 18px 20px;
}

.hero-engine__metric-label {
  display: block;
  color: rgba(110, 96, 84, 0.84);
  font-size: 0.83rem;
}

.hero-engine__metric-card strong {
  display: block;
  margin-top: 10px;
  font-size: clamp(1.9rem, 3vw, 2.45rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.hero-engine__metric-note {
  display: block;
  margin-top: 10px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
}

.hero-engine__panel {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(280px, 0.95fr);
  gap: 20px;
  margin-top: 20px;
}

.hero-engine__chart {
  padding: 22px;
  border: 1px solid rgba(47, 36, 26, 0.08);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 250, 244, 0.88), rgba(245, 235, 223, 0.94));
}

.hero-engine__legend {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  color: rgba(47, 36, 26, 0.68);
  font-size: 0.85rem;
}

.hero-engine__legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-engine__legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
}

.hero-engine__legend-dot--base {
  background: #d3b15c;
}

.hero-engine__legend-dot--optimised {
  background: var(--accent);
}

.hero-engine__curve-wrap {
  position: relative;
  margin-top: 20px;
  padding: 12px 0 6px;
}

.hero-engine__curve {
  display: block;
  width: 100%;
  height: auto;
}

.hero-engine__curve-area {
  fill: url(#engineCurveGlow);
}

.hero-engine__curve-line {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 8;
}

.hero-engine__curve-line--base {
  stroke: rgba(195, 151, 62, 0.42);
  stroke-dasharray: 16 14;
}

.hero-engine__curve-line--optimised {
  stroke: var(--accent);
}

.hero-engine__axis {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 6px;
  color: rgba(110, 96, 84, 0.78);
  font-size: 0.8rem;
}

.hero-engine__scenario {
  display: grid;
  align-content: start;
  gap: 16px;
  padding: 20px;
  background: linear-gradient(180deg, rgba(252, 235, 188, 0.94), rgba(242, 204, 103, 0.96));
  color: #2f241a;
  box-shadow: 0 18px 36px rgba(216, 170, 69, 0.18);
}

.hero-engine__scenario-pill {
  justify-self: start;
  border-color: rgba(169, 119, 28, 0.16);
  background: rgba(255, 248, 227, 0.52);
  color: rgba(47, 36, 26, 0.8);
}

.hero-engine__scenario-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.hero-engine__scenario-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(169, 119, 28, 0.14);
}

.hero-engine__scenario-list span {
  color: rgba(47, 36, 26, 0.72);
  font-size: 0.92rem;
}

.hero-engine__scenario-list strong {
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: #2f241a;
}

.hero-engine__scenario-note {
  margin: 0;
  color: rgba(47, 36, 26, 0.76);
  font-size: 0.93rem;
  line-height: 1.7;
}

.section {
  padding: 56px 0;
}

.section__heading {
  margin-bottom: 28px;
}

.section__heading--wide {
  max-width: 760px;
}

.section__heading--center {
  text-align: center;
}

.section h2 {
  margin: 0;
  font-size: clamp(2rem, 3.6vw, 3rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.section__heading p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

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

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.signal-card {
  padding: 28px;
  border: 1px solid rgba(47, 36, 26, 0.08);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 250, 244, 0.96), rgba(248, 241, 231, 0.94)),
    var(--surface);
  box-shadow: 0 12px 28px rgba(48, 36, 24, 0.05);
}

.signal-card__glyph {
  display: inline-block;
  width: 46px;
  height: 46px;
  padding: 10px;
  border-radius: 14px;
  background: rgba(216, 170, 69, 0.12);
  stroke: var(--accent);
  stroke-width: 2.2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.signal-card h3 {
  margin: 18px 0 10px;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
}

.signal-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.doubt-list {
  display: grid;
  gap: 16px;
}

.doubt-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  border-radius: 18px;
  background: rgba(255, 250, 244, 0.84);
  box-shadow: 0 10px 24px rgba(48, 36, 24, 0.04);
}

.doubt-card__bar {
  flex: 0 0 4px;
  min-height: 68px;
  border-radius: 999px;
  background: linear-gradient(180deg, #efc96c, #cb922d);
}

.doubt-card h3 {
  margin: 0 0 8px;
  font-size: 1.06rem;
  font-weight: 700;
}

.doubt-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.decision-band {
  margin-top: 8px;
  padding: 56px 32px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(252, 235, 188, 0.96), rgba(242, 204, 103, 0.94));
  color: #2f241a;
}

.decision-band h2 {
  color: #2f241a;
}

.decision-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.decision-step {
  padding: 28px 22px;
  border: 1px solid rgba(169, 119, 28, 0.16);
  border-radius: 20px;
  background: rgba(255, 250, 244, 0.56);
}

.decision-step__index {
  display: block;
  margin-bottom: 18px;
  color: rgba(169, 119, 28, 0.34);
  font-size: 2rem;
  font-weight: 900;
  font-style: italic;
  line-height: 1;
}

.decision-step h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  font-weight: 700;
}

.decision-step p {
  margin: 0;
  color: rgba(47, 36, 26, 0.72);
  font-size: 0.95rem;
  line-height: 1.65;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 20px 22px;
  border: 1px solid rgba(47, 36, 26, 0.08);
  border-radius: 16px;
  background: rgba(255, 250, 244, 0.88);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-size: 0.96rem;
  font-weight: 600;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item[open] summary {
  margin-bottom: 12px;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.final-cta {
  padding: 0 0 64px;
}

.final-cta__inner {
  padding: 56px 32px;
  border-radius: 28px 28px 0 0;
  background: linear-gradient(180deg, rgba(252, 235, 188, 0.96), rgba(242, 204, 103, 0.94));
  color: #2f241a;
  text-align: center;
  box-shadow: 0 28px 60px rgba(216, 170, 69, 0.18);
}

.final-cta__inner h2 {
  margin: 0;
  color: #2f241a;
}

.final-cta__inner p {
  max-width: 640px;
  margin: 16px auto 28px;
  color: rgba(47, 36, 26, 0.76);
}

.final-cta .waitlist-form__field {
  max-width: 560px;
  margin: 0 auto;
  background: rgba(255, 250, 244, 0.72);
  border-color: rgba(169, 119, 28, 0.12);
}

.final-cta .waitlist-form input {
  color: var(--ink);
}

.final-cta .waitlist-form input::placeholder {
  color: rgba(110, 96, 84, 0.62);
}

.final-cta .waitlist-form button {
  background: linear-gradient(180deg, #f4d27c, #deae4d);
  color: #2f241a;
}

.final-cta .waitlist-form__feedback {
  color: rgba(47, 36, 26, 0.76);
}

@media (max-width: 1100px) {
  .hero-engine__panel {
    grid-template-columns: 1fr;
  }

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

  .topbar__inner,
  .page-shell {
    width: min(calc(100% - 24px), 1200px);
  }
}

@media (max-width: 720px) {
  .topbar__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .nav {
    width: 100%;
    justify-content: flex-start;
  }

  .hero--centered {
    padding-top: 44px;
  }

  .hero h1 {
    font-size: clamp(2.35rem, 12vw, 3.3rem);
  }

  .hero-engine {
    padding: 20px;
  }

  .hero-engine__topline,
  .hero-engine__metrics,
  .waitlist-form__field,
  .waitlist-form__field--stack {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .hero-engine__topline {
    align-items: flex-start;
  }

  .waitlist-form button {
    width: 100%;
    min-width: 0;
  }

  .signal-grid,
  .decision-steps {
    grid-template-columns: 1fr;
  }

  .section,
  .decision-band {
    padding-inline: 0;
  }

  .decision-band {
    padding: 40px 20px;
  }

  .final-cta__inner {
    padding: 44px 20px;
  }
}

.site-footer {
  padding: 24px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  max-width: 1120px;
  margin: 0 auto;
}

.site-footer__divider {
  color: rgba(110, 96, 84, 0.48);
}

.site-footer__record {
  color: inherit;
  text-decoration: none;
}

.site-footer__record:hover,
.site-footer__record:focus-visible {
  color: var(--ink);
}