:root {
  --color-bg: #eef8fa;
  --color-brand: #cff6ff;
  --color-primary: #e00330;
  --color-reward: #ffd84d;
  --color-text: #101828;
  --color-muted: #667085;
  --color-surface: #ffffff;
  --color-warm: #fff7f0;
  --color-border: rgba(16, 24, 40, 0.07);
  --color-header: rgba(238, 248, 250, 0.86);
  --color-focus: rgba(224, 3, 48, 0.24);
  --color-shadow: rgba(16, 24, 40, 0.08);
  --color-primary-soft: rgba(224, 3, 48, 0.12);
  --color-primary-shadow: rgba(224, 3, 48, 0.16);
  --color-primary-shadow-strong: rgba(224, 3, 48, 0.22);
  --color-line: rgba(16, 24, 40, 0.18);
  --color-reward-ring: rgba(255, 216, 77, 0.28);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", sans-serif;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --radius-small: 12px;
  --radius-button: 16px;
  --radius-card: 20px;
  --radius-large: 28px;
  --radius-pill: 999px;
  --shadow-surface: 0 12px 32px var(--color-shadow);
  --shadow-button: 0 8px 18px var(--color-primary-shadow);
  --shell: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 12% 8%, var(--color-surface), transparent 28%);
  content: "";
  pointer-events: none;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; object-fit: contain; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
p, h1, h2, h3 { margin-top: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }
.section { padding-block: var(--space-24); }
.section[id] { scroll-margin-top: 88px; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 200;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-small);
  background: var(--color-text);
  color: var(--color-surface);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 3px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: var(--color-header);
  backdrop-filter: blur(16px);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}
.site-header.nav-scrolled { border-color: var(--color-border); box-shadow: 0 4px 16px var(--color-shadow); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: var(--space-8); }
.brand { display: inline-flex; width: 82px; min-height: 48px; align-items: center; overflow: hidden; }
.brand img { width: 82px; height: auto; object-fit: contain; }
.primary-nav { display: flex; align-items: center; gap: var(--space-8); color: var(--color-muted); font-size: 15px; font-weight: 600; }
.primary-nav a, .footer-nav a, .guide-nav a { transition: color 160ms ease; }
.primary-nav a:hover, .footer-nav a:hover, .guide-nav a:hover { color: var(--color-primary); }

.button, .store-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-button);
  background: var(--color-primary);
  color: var(--color-surface);
  font-weight: 600;
  box-shadow: var(--shadow-button);
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.button:hover, .store-button:hover { transform: translateY(-2px); box-shadow: 0 10px 22px var(--color-primary-shadow-strong); }
.button:active, .store-button:active { transform: translateY(0) scale(0.98); }
.button-small { min-width: 104px; padding: var(--space-3) var(--space-5); }

.hero { padding: var(--space-16) 0 var(--space-20); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 0.88fr) minmax(460px, 1.12fr); align-items: center; gap: var(--space-10); }
.hero-copy { position: relative; z-index: 2; padding-block: var(--space-8); }
.eyebrow, .kicker {
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-primary-soft);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
}
.hero h1 {
  margin-bottom: var(--space-6);
  font-size: clamp(56px, 7vw, 88px);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.94;
}
.hero h1 span { color: var(--color-primary); }
.hero-lede { max-width: 540px; margin-bottom: var(--space-8); color: var(--color-muted); font-size: clamp(18px, 2vw, 21px); line-height: 1.5; }
.hero-actions { display: flex; align-items: center; gap: var(--space-6); }
.store-button { gap: var(--space-3); min-width: 194px; padding: var(--space-3) var(--space-5); }
.store-button svg { width: 25px; fill: currentColor; }
.store-button span { line-height: 1.05; text-align: left; }
.store-button small { display: block; margin-bottom: 3px; font-size: 10px; font-weight: 400; }
.text-link { min-height: 44px; display: inline-flex; align-items: center; gap: var(--space-2); color: var(--color-text); font-weight: 600; }
.text-link span { color: var(--color-primary); }
.availability { margin: var(--space-5) 0 0; color: var(--color-muted); font-size: 13px; }
.coming-soon { display: inline-flex; gap: var(--space-1); }

.hero-art { position: relative; min-height: 560px; display: flex; align-items: flex-end; justify-content: center; }
.hero-art-backdrop { position: absolute; inset: 9% 7% 3% 7%; border-radius: 46% 54% 42% 58%; background: var(--color-brand); transform: rotate(-2deg); }
.hero-art-backdrop::before { position: absolute; top: 7%; right: 5%; width: 82px; aspect-ratio: 1; border-radius: 50%; background: var(--color-reward); content: ""; }
.hero-art img { position: relative; z-index: 2; width: min(560px, 100%); height: auto; object-fit: contain; filter: drop-shadow(0 20px 24px var(--color-shadow)); }
.hero-orbit {
  position: absolute;
  z-index: 3;
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  font-size: 29px;
  box-shadow: var(--shadow-surface);
  animation: drift 5s ease-in-out infinite;
}
.orbit-one { top: 5%; left: -1%; transform: rotate(-8deg); }
.orbit-two { right: -2%; bottom: 27%; animation-delay: -1.5s; transform: rotate(8deg); }
.orbit-three { right: 7%; top: 12%; animation-delay: -3s; }
@keyframes drift { 50% { translate: 0 -8px; } }

.chat-strip { border-block: 1px solid var(--color-border); background: var(--color-surface); }
.chat-strip-inner { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); }
.chat-strip p { margin: 0; font-weight: 600; }
.chat-strip .strip-note { color: var(--color-muted); font-size: 14px; font-weight: 400; }
.chat-apps { display: flex; align-items: center; gap: var(--space-6); color: var(--color-muted); font-size: 14px; font-weight: 600; }
.chat-apps li { display: inline-flex; align-items: center; gap: var(--space-2); white-space: nowrap; }
.app-mark { width: 26px; height: 26px; display: grid; place-items: center; border-radius: 8px; background: var(--color-brand); color: var(--color-text); font-weight: 700; }

.section-heading { max-width: 520px; }
.section-heading.centered { margin: 0 auto var(--space-16); text-align: center; }
.kicker { margin-bottom: var(--space-3); }
h2 { margin-bottom: var(--space-5); font-size: clamp(36px, 4.5vw, 56px); font-weight: 700; letter-spacing: -0.045em; line-height: 1.04; }
.section-heading > p:last-child, .reveal-copy > p:not(.kicker):not(.tap-note), .emoji-copy > p:not(.kicker), .privacy-card > div > p:last-child { color: var(--color-muted); font-size: 17px; }

.section-how { background: var(--color-bg); }
.steps-list { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.steps-list::before { position: absolute; top: 28px; left: 17%; right: 17%; height: 1px; border-top: 1px dashed var(--color-line); content: ""; }
.step-item { position: relative; text-align: center; }
.step-number { position: relative; z-index: 2; width: 56px; height: 56px; display: grid; place-items: center; margin: 0 auto var(--space-6); border: 6px solid var(--color-bg); border-radius: 50%; background: var(--color-primary); color: var(--color-surface); font-weight: 700; }
.step-visual { height: 236px; display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-6); border: 1px solid var(--color-border); border-radius: var(--radius-large); background: var(--color-surface); overflow: hidden; }
.step-item h3 { margin-bottom: var(--space-2); font-size: 20px; font-weight: 600; }
.step-item > p { max-width: 280px; margin: 0 auto; color: var(--color-muted); }
.mini-compose { position: relative; width: 78%; padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-card); background: var(--color-bg); text-align: left; }
.mini-compose span { color: var(--color-muted); font-size: 12px; font-weight: 600; }
.mini-compose p { margin: var(--space-3) 0 0; font-weight: 600; }
.mini-compose i { position: absolute; right: var(--space-4); bottom: var(--space-4); width: 9px; height: 18px; border-radius: var(--radius-pill); background: var(--color-primary); }
.emoji-visual { gap: var(--space-2); background: var(--color-warm); }
.emoji-visual span { width: 54px; height: 54px; display: grid; place-items: center; border-radius: var(--radius-button); background: var(--color-surface); font-size: 27px; }
.emoji-visual .selected { outline: 3px solid var(--color-primary); translate: 0 -8px; box-shadow: var(--shadow-surface); }
.send-visual { flex-direction: column; gap: var(--space-3); background: var(--color-brand); }
.message-bubble { position: relative; min-width: 96px; padding: var(--space-3) var(--space-5); border-radius: var(--radius-card) var(--radius-card) var(--space-1) var(--radius-card); background: var(--color-surface); font-size: 35px; box-shadow: var(--shadow-surface); }
.send-visual span { color: var(--color-muted); font-size: 12px; }

.reveal-section { background: var(--color-brand); }
.reveal-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; align-items: center; gap: var(--space-20); }
.reveal-copy { max-width: 480px; }
.tap-note { display: flex; align-items: center; gap: var(--space-3); margin: var(--space-8) 0 0; font-weight: 600; }
.tap-note span { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; background: var(--color-reward); }
.reveal-demo { display: flex; justify-content: center; }
.reveal-phone { width: min(100%, 430px); min-height: 520px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: var(--space-10); border: 8px solid var(--color-text); border-radius: 54px; background: var(--color-surface); box-shadow: var(--shadow-surface); }
.demo-label { margin: 0 0 var(--space-5); color: var(--color-muted); font-size: 13px; font-weight: 600; }
.reveal-trigger { width: 138px; height: 138px; display: grid; place-items: center; border: 0; border-radius: 50%; background: var(--color-reward); cursor: pointer; font-size: 68px; box-shadow: 0 0 0 12px var(--color-reward-ring); transition: transform 180ms ease; }
.reveal-trigger:hover { transform: scale(1.03) rotate(-2deg); }
.reveal-trigger:active { transform: scale(0.96); }
.secret-message { width: 100%; max-height: 0; margin-top: 0; overflow: hidden; opacity: 0; transform: translateY(12px); transition: max-height 280ms ease, margin 280ms ease, opacity 220ms ease, transform 280ms ease; }
.reveal-phone.is-open .secret-message { max-height: 180px; margin-top: var(--space-8); opacity: 1; transform: translateY(0); }
.secret-status { display: block; margin-bottom: var(--space-2); color: var(--color-primary); font-size: 12px; font-weight: 600; }
.secret-message p { margin: 0; padding: var(--space-4); border-radius: var(--radius-button); background: var(--color-bg); font-weight: 600; }
.demo-hint { margin: var(--space-4) 0 0; color: var(--color-muted); font-size: 12px; opacity: 0; }
.reveal-phone.is-open .demo-hint { opacity: 1; }

.emoji-section { background: var(--color-warm); }
.emoji-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: center; gap: var(--space-20); }
.emoji-cloud { position: relative; min-height: 530px; }
.emoji-cloud::before { position: absolute; inset: 10% 8%; border-radius: 44% 56% 48% 52%; background: var(--color-brand); content: ""; transform: rotate(3deg); }
.emoji-cloud img { position: absolute; top: 21%; left: 50%; width: 36%; height: auto; aspect-ratio: 1; border-radius: var(--radius-large); object-fit: contain; box-shadow: var(--shadow-surface); transform: translateX(-50%) rotate(-3deg); }
.emoji-chip { position: absolute; z-index: 2; width: 72px; height: 72px; display: grid; place-items: center; border: 1px solid var(--color-border); border-radius: var(--radius-card); background: var(--color-surface); font-size: 36px; box-shadow: var(--shadow-surface); }
.e1 { top: 6%; left: 12%; transform: rotate(-8deg); }.e2 { top: 3%; right: 17%; transform: rotate(6deg); }.e3 { top: 42%; right: 2%; transform: rotate(10deg); }.e4 { bottom: 4%; right: 18%; transform: rotate(-5deg); }.e5 { bottom: 5%; left: 13%; transform: rotate(7deg); }.e6 { top: 43%; left: 0; transform: rotate(-9deg); }
.check-list { display: grid; gap: var(--space-3); margin-top: var(--space-8); }
.check-list li { display: flex; align-items: center; gap: var(--space-3); font-weight: 600; }
.check-list li::before { width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: var(--color-reward); content: "✓"; font-size: 13px; font-weight: 700; }

.privacy-section { padding-block: var(--space-20); }
.privacy-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--space-8); padding: var(--space-10); border: 1px solid var(--color-border); border-radius: var(--radius-large); background: var(--color-surface); }
.privacy-card h2 { margin-bottom: var(--space-3); font-size: clamp(30px, 4vw, 42px); }
.privacy-card p:last-child { max-width: 680px; margin-bottom: 0; }
.privacy-icon { width: 72px; height: 72px; display: grid; place-items: center; border-radius: var(--radius-card); background: var(--color-brand); }
.privacy-icon svg { width: 36px; fill: var(--color-text); }

.faq-section { padding-top: var(--space-16); }
.faq-grid { display: grid; grid-template-columns: 0.75fr 1.25fr; align-items: start; gap: var(--space-20); }
.faq-list { border-top: 1px solid var(--color-border); }
details { border-bottom: 1px solid var(--color-border); }
summary { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); cursor: pointer; font-size: 18px; font-weight: 600; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { width: 28px; height: 28px; display: grid; flex: 0 0 auto; place-items: center; border-radius: 50%; background: var(--color-brand); content: "+"; color: var(--color-text); font-size: 20px; }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 var(--space-12) var(--space-6) 0; color: var(--color-muted); }

.final-section { padding-top: var(--space-8); }
.final-card { position: relative; min-height: 510px; display: flex; align-items: center; overflow: hidden; border-radius: var(--radius-large); background: var(--color-brand); }
.final-card::before { position: absolute; right: -5%; bottom: -40%; width: 580px; height: 580px; border-radius: 50%; background: var(--color-reward); content: ""; }
.final-card > img { position: absolute; z-index: 2; right: 1%; bottom: -8%; width: 44%; height: auto; object-fit: contain; }
.final-emoji { position: absolute; z-index: 3; top: 10%; right: 6%; width: 74px; height: 74px; display: grid; place-items: center; border-radius: var(--radius-card); background: var(--color-surface); font-size: 38px; box-shadow: var(--shadow-surface); transform: rotate(8deg); }
.final-copy { position: relative; z-index: 4; width: 57%; padding: var(--space-16); }
.final-copy h2 { font-size: clamp(40px, 5vw, 62px); }
.final-copy > p:not(.kicker) { color: var(--color-muted); font-size: 18px; }
.final-actions { display: flex; align-items: center; gap: var(--space-5); margin-top: var(--space-8); }
.final-coming { color: var(--color-muted); flex-direction: column; gap: 0; line-height: 1.2; }
.final-coming small { font-size: 10px; }

.site-footer { padding: var(--space-16) 0 var(--space-8); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--space-12); }
.footer-identity p { max-width: 280px; margin: var(--space-3) 0 0; color: var(--color-muted); font-size: 14px; }
.footer-nav, .guide-nav { display: grid; align-content: start; gap: var(--space-3); color: var(--color-muted); font-size: 14px; }
.footer-bottom { display: flex; justify-content: space-between; gap: var(--space-4); margin-top: var(--space-12); padding-top: var(--space-6); border-top: 1px solid var(--color-border); color: var(--color-muted); font-size: 13px; }

.reveal-on-scroll { opacity: 0; transform: translateY(18px); transition: opacity 520ms ease, transform 520ms ease; }
.reveal-on-scroll.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .hero-art { min-height: 490px; }
  .hero-art img { width: min(500px, 100%); }
  .chat-strip-inner { flex-wrap: wrap; justify-content: center; padding-block: var(--space-5); text-align: center; }
  .chat-strip-inner > p { width: 100%; }
  .reveal-grid, .emoji-grid { gap: var(--space-10); }
  .privacy-card { grid-template-columns: auto 1fr; }
  .privacy-card > .text-link { grid-column: 2; }
}

@media (max-width: 760px) {
  .shell { width: min(calc(100% - 40px), var(--shell)); }
  .section { padding-block: var(--space-20); }
  .primary-nav { display: none; }
  .header-inner { min-height: 68px; }
  .button-small { min-width: 96px; }
  .hero { padding: var(--space-10) 0 var(--space-12); }
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-2); }
  .hero-copy { text-align: center; }
  .hero h1 { font-size: clamp(52px, 15vw, 72px); }
  .hero-lede { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .availability { text-align: center; }
  .hero-art { min-height: 430px; }
  .hero-art-backdrop { inset: 9% 5% 1%; }
  .hero-art img { width: min(500px, 104%); }
  .hero-orbit { width: 56px; height: 56px; font-size: 26px; }
  .chat-apps { width: 100%; justify-content: center; flex-wrap: wrap; gap: var(--space-4); }
  .section-heading.centered { margin-bottom: var(--space-10); }
  .steps-list { grid-template-columns: 1fr; gap: var(--space-12); }
  .steps-list::before { display: none; }
  .step-visual { max-width: 430px; height: 220px; margin-inline: auto; }
  .reveal-grid, .emoji-grid, .faq-grid { grid-template-columns: 1fr; gap: var(--space-10); }
  .reveal-copy { text-align: center; margin-inline: auto; }
  .tap-note { justify-content: center; }
  .reveal-phone { min-height: 470px; }
  .emoji-copy { order: -1; text-align: center; }
  .check-list { width: fit-content; margin-inline: auto; text-align: left; }
  .emoji-cloud { min-height: 450px; }
  .privacy-card { grid-template-columns: 1fr; text-align: center; }
  .privacy-icon { margin-inline: auto; }
  .privacy-card > .text-link { grid-column: auto; justify-content: center; }
  .final-card { min-height: 700px; align-items: flex-start; text-align: center; }
  .final-card::before { right: -20%; bottom: -28%; }
  .final-card > img { right: 2%; bottom: -3%; width: 96%; }
  .final-copy { width: 100%; padding: var(--space-12) var(--space-6); }
  .final-actions { justify-content: center; }
  .final-emoji { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-identity { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  .shell { width: min(calc(100% - 40px), var(--shell)); }
  .brand { width: 72px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .store-button { width: 100%; }
  .hero-art { min-height: 360px; }
  .hero-art img { width: 104%; }
  .orbit-one { left: -3%; }.orbit-two { right: -4%; }.orbit-three { right: 2%; }
  .chat-apps { display: grid; grid-template-columns: 1fr 1fr; text-align: left; }
  .emoji-visual span { width: 48px; height: 48px; font-size: 24px; }
  .reveal-phone { min-height: 440px; padding: var(--space-6); border-width: 6px; border-radius: 44px; }
  .reveal-trigger { width: 124px; height: 124px; font-size: 60px; }
  .emoji-cloud { min-height: 380px; }
  .emoji-chip { width: 60px; height: 60px; font-size: 30px; }
  .privacy-card { padding: var(--space-8) var(--space-5); }
  .final-card { min-height: 660px; }
  .final-actions { flex-direction: column; }
  .final-actions .store-button { width: 100%; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal-on-scroll { opacity: 1; transform: none; }
}