@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&display=swap");

:root {
  --black: #0a0a0a;
  --near-black: #141414;
  --yellow: #ffcc00;
  --yellow-dark: #e0b400;
  --white: #ffffff;
  --gray: #a3a3a3;
  --border: rgba(255, 255, 255, 0.1);
  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

p {
  margin: 0 0 1em;
  color: var(--gray);
}

a {
  color: inherit;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.text-yellow {
  color: var(--yellow);
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
}

.brand-logo {
  height: 36px;
  border-radius: 8px;
  display: block;
}

.nav-links {
  display: none;
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--yellow);
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  border-radius: 999px;
  padding: 12px 22px;
  text-decoration: none;
  transition: transform 0.15s ease, opacity 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-yellow {
  background: var(--yellow);
  color: var(--black);
}

.btn-yellow:hover {
  background: var(--yellow-dark);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--yellow);
  color: var(--yellow);
}

.btn-small {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-large {
  padding: 15px 28px;
  font-size: 16px;
}

.icon {
  width: 20px;
  height: 20px;
}

/* Hero */
.hero {
  padding: 72px 0 88px;
  text-align: center;
  background: radial-gradient(ellipse at top, rgba(255, 204, 0, 0.08), transparent 60%);
}

.hero-logo {
  height: 88px;
  border-radius: 20px;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  max-width: 780px;
  margin: 0 auto 20px;
}

.hero-sub {
  max-width: 620px;
  margin: 0 auto 36px;
  font-size: 17px;
}

.hero-ctas {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  justify-content: center;
}

@media (min-width: 560px) {
  .hero-ctas {
    flex-direction: row;
  }
}

.hero-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--gray);
}

/* Sections */
.section {
  padding: 72px 0;
}

.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-align: center;
  margin-bottom: 44px;
}

.section-dark {
  background: var(--near-black);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-cta {
  text-align: center;
  background: radial-gradient(ellipse at bottom, rgba(255, 204, 0, 0.08), transparent 60%);
}

/* Steps */
.steps {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step {
  background: var(--near-black);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-display);
  margin-bottom: 16px;
}

.step h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.step p {
  font-size: 14.5px;
  margin: 0;
}

/* Categories */
.categories {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .categories {
    grid-template-columns: repeat(3, 1fr);
  }
}

.category {
  text-align: center;
  padding: 32px 20px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.category-emoji {
  font-size: 36px;
  display: block;
  margin-bottom: 12px;
}

.category h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.category p {
  font-size: 14.5px;
  margin: 0;
}

/* Sellers */
.sellers-inner {
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
  align-items: center;
}

@media (min-width: 900px) {
  .sellers-inner {
    grid-template-columns: 1fr 1fr;
  }
}

.sellers-copy {
  font-size: 16px;
  margin-bottom: 28px;
}

.sellers-example {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-bubble {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 14px;
}

.chat-bubble-user {
  align-self: flex-end;
  background: var(--yellow);
  color: var(--black);
  border-bottom-right-radius: 4px;
}

.chat-bubble-bot {
  align-self: flex-start;
  background: var(--near-black);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

/* FAQ */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

details {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
}

summary {
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-display);
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

details p {
  margin: 12px 0 0;
  font-size: 14.5px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.footer-logo {
  height: 32px;
  border-radius: 6px;
}

.footer p {
  font-size: 13px;
  margin: 0;
}