:root {
  --bg-primary: #FFFFFF;
  --bg-secondary: rgba(245, 245, 247, 0.72);
  --bg-surface: rgba(255, 255, 255, 0.84);
  --bg-elevated: #FAFAFC;

  --text-primary: #111113;      --text-secondary: #5E5E66;    --text-tertiary: #86868B;

  --border-hairline: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.16);

  --btn-solid-bg: #111113;
  --btn-solid-fg: #FFFFFF;
  --btn-solid-hover: #2A2A2E;

  --btn-glass-bg: rgba(0, 0, 0, 0.04);
  --btn-glass-fg: #111113;
  --btn-glass-border: rgba(0, 0, 0, 0.12);
  --btn-glass-hover: rgba(0, 0, 0, 0.08);

  --glass-nav-bg: rgba(255, 255, 255, 0.76);
  --glass-nav-border: rgba(0, 0, 0, 0.08);

  --logo-filter: brightness(0.12);

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="dark"] {
  --bg-primary: #080809;
  --bg-secondary: rgba(15, 15, 17, 0.72);
  --bg-surface: rgba(18, 18, 21, 0.80);
  --bg-elevated: #17171A;

  --text-primary: #F5F5F7;      --text-secondary: #98989F;    --text-tertiary: #636369;

  --border-hairline: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --btn-solid-bg: #F5F5F7;
  --btn-solid-fg: #080809;
  --btn-solid-hover: #FFFFFF;

  --btn-glass-bg: rgba(255, 255, 255, 0.05);
  --btn-glass-fg: #F5F5F7;
  --btn-glass-border: rgba(255, 255, 255, 0.12);
  --btn-glass-hover: rgba(255, 255, 255, 0.10);

  --glass-nav-bg: rgba(8, 8, 9, 0.72);
  --glass-nav-border: rgba(255, 255, 255, 0.08);

  --logo-filter: brightness(1.08);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  letter-spacing: -0.012em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

main, .site-footer {
  position: relative;
  z-index: 1;
}

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

button {
  font-family: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--glass-nav-bg);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.site-header.scrolled {
  border-bottom-color: var(--glass-nav-border);
}

.nav-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.brand-logo {
  display: block;
  object-fit: contain;
  filter: var(--logo-filter);
  transition: filter 0.25s ease;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.85rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 450;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-hairline);
  background-color: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, transform 0.2s var(--ease-out);
}

.icon-btn:hover {
  color: var(--text-primary);
  background-color: var(--btn-glass-bg);
  border-color: var(--border-strong);
  transform: scale(1.05);
}

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

.btn-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 550;
  padding: 0.48rem 1.05rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform 0.2s var(--ease-out), background-color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

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

.btn-pill:active {
  transform: scale(0.97);
}

.btn-solid {
  background-color: var(--btn-solid-bg);
  color: var(--btn-solid-fg);
  border: 1px solid transparent;
}

.btn-solid:hover {
  background-color: var(--btn-solid-hover);
}

.btn-glass {
  background-color: var(--btn-glass-bg);
  color: var(--btn-glass-fg);
  border: 1px solid var(--btn-glass-border);
  backdrop-filter: blur(12px);
}

.btn-glass:hover {
  background-color: var(--btn-glass-hover);
  border-color: var(--border-strong);
}

.btn-lg {
  font-size: 0.9375rem;
  padding: 0.78rem 1.65rem;
  min-height: 46px;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
  flex-direction: column;
  gap: 5px;
}

.mobile-toggle .bar {
  width: 20px;
  height: 1.5px;
  background-color: var(--text-primary);
  border-radius: 2px;
}

.hero-section {
  position: relative;
  min-height: 76vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6.5rem 0 5.5rem;
  text-align: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-size: clamp(3.35rem, 8.5vw, 6.25rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.045em;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.hero-title-muted {
  color: var(--text-secondary);
}

.hero-subtitle {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 580px;
  line-height: 1.55;
  margin-bottom: 2.35rem;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-bottom: 1.4rem;
}

.hero-meta {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  letter-spacing: 0.01em;
}

.meta-badge {
  display: inline-block;
  padding: 0.12rem 0.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-hairline);
  background-color: var(--btn-glass-bg);
  color: var(--text-secondary);
  font-size: 0.7rem;
  margin-left: 0.25rem;
}

.section {
  padding: 5.5rem 0;
}

.section-alt {
  background-color: var(--bg-secondary);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
}

.section-header {
  max-width: 660px;
  margin-bottom: 3.25rem;
}

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(1.85rem, 3.8vw, 2.65rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
}

.section-lead {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.bento-card {
  background-color: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s ease, transform 0.3s var(--ease-out);
}

.bento-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.bento-wide {
  grid-column: span 3;
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.card-tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-hairline);
  background-color: var(--btn-glass-bg);
}

.tag-soon {
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.card-title {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.65rem;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.5rem;
}

.spec-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-hairline);
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.spec-item strong {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
}

.spec-item span {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.clean-list {
  list-style: none;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-hairline);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.clean-list li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding-left: 1rem;
  position: relative;
}

.clean-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--text-tertiary);
}

.card-upcoming {
  border-style: dashed;
}

.specs-tablist {
  display: inline-flex;
  gap: 0.4rem;
  padding: 0.3rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-pill);
  margin-bottom: 2rem;
}

.spec-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.48rem 1.1rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: color 0.18s ease, background-color 0.18s ease;
}

.spec-tab:hover {
  color: var(--text-primary);
}

.spec-tab.active {
  background-color: var(--btn-solid-bg);
  color: var(--btn-solid-fg);
}

.specs-panel {
  display: none;
  animation: fadeSlideUp 0.3s var(--ease-out);
}

.specs-panel.active {
  display: block;
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.spec-metric {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: border-color 0.2s ease;
}

.spec-metric:hover {
  border-color: var(--border-strong);
}

.spec-k {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  margin-bottom: 0.4rem;
}

.spec-v {
  display: block;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.spec-note {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.process-step {
  background-color: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  transition: border-color 0.25s ease, transform 0.3s var(--ease-out);
}

.process-step:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: 1.25rem;
}

.step-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.faq-container {
  max-width: 780px;
}

.accordion {
  border-top: 1px solid var(--border-hairline);
}

.accordion-item {
  border-bottom: 1px solid var(--border-hairline);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.35rem 0;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.0625rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}

.accordion-chevron {
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: transform 0.25s var(--ease-out);
}

.accordion-trigger[aria-expanded="true"] .accordion-chevron {
  transform: rotate(180deg);
}

.accordion-inner {
  padding-bottom: 1.35rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.accordion-inner a {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.cta-card {
  background-color: var(--bg-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xl);
  padding: 4.5rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta-logo {
  filter: var(--logo-filter);
  margin-bottom: 1.5rem;
  object-fit: contain;
}

.cta-title {
  font-size: clamp(1.85rem, 3.8vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
}

.cta-lead {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 2rem;
}

.invite-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.35rem 0.35rem 0.35rem 1.15rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-primary);
  margin-bottom: 1.75rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s var(--ease-spring);
}

.invite-pill.copied {
  border-color: #30D158;
  box-shadow: 0 0 0 3px rgba(48, 209, 88, 0.16);
  transform: scale(1.02);
}

.invite-code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-primary);
}

.copy-invite-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--btn-solid-bg);
  color: var(--btn-solid-fg);
  border: none;
  padding: 0.45rem 0.95rem;
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 550;
  cursor: pointer;
  transition: transform 0.2s var(--ease-spring), background-color 0.25s ease, color 0.25s ease;
}

.copy-invite-btn:hover {
  transform: scale(1.03);
}

.copy-invite-btn:active {
  transform: scale(0.95);
}

.copy-invite-btn.copied {
  background-color: #30D158;
  color: #080809;
}

.copy-icon-wrap {
  position: relative;
  width: 14px;
  height: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon-copy, .icon-check {
  position: absolute;
  transition: transform 0.25s var(--ease-spring), opacity 0.2s ease;
}

.icon-copy {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.icon-check {
  opacity: 0;
  transform: scale(0.4) rotate(-25deg);
}

.copy-invite-btn.copied .icon-copy {
  opacity: 0;
  transform: scale(0.4) rotate(25deg);
}

.copy-invite-btn.copied .icon-check {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.legal-section {
  padding: 4.5rem 0 6rem;
}

.legal-container {
  max-width: 760px;
}

.back-link {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  transition: color 0.15s ease;
}

.back-link:hover {
  color: var(--text-primary);
}

.legal-title {
  font-size: clamp(2.1rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.legal-updated {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-hairline);
}

.legal-body h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2.25rem;
  margin-bottom: 0.65rem;
  letter-spacing: -0.015em;
}

.legal-body p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.legal-body a {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--btn-glass-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 5px;
}

.site-footer {
  border-top: 1px solid var(--border-hairline);
  background-color: var(--bg-secondary);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 2.75rem 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-right a:hover {
  color: var(--text-primary);
}

@media (max-width: 960px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento-wide {
    grid-column: span 2;
  }
  .spec-list {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-hairline);
    flex-direction: column;
    padding: 1.25rem 1.5rem;
    gap: 1rem;
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .hero-section {
    min-height: 68vh;
    padding: 4.5rem 0 4rem;
  }

  .bento-grid,
  .specs-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .bento-wide {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}