:root {
  --color-primary: #10b981;
  --color-primary-dark: #059669;
  --color-on-primary: #111827;
  --color-background: #ffffff;
  --color-background-secondary: #f9fafb;
  --color-background-tertiary: #f3f4f6;
  --color-text: #111827;
  --color-text-secondary: #4b5563;
  --color-text-tertiary: #6b7280;
  --color-border: #e5e7eb;
  --color-border-secondary: #d1d5db;
  --color-accent: #3b82f6;
  --color-primary-soft: rgba(16, 185, 129, 0.12);
  --color-glow: rgba(16, 185, 129, 0.18);
  --color-glow-accent: rgba(59, 130, 246, 0.14);
  --color-surface: rgba(255, 255, 255, 0.9);
  --color-surface-strong: rgba(255, 255, 255, 0.96);
  --color-surface-border: rgba(229, 231, 235, 0.9);
  --color-surface-footer: rgba(255, 255, 255, 0.95);
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 12px 24px rgba(16, 24, 40, 0.08);
  --shadow-lg: 0 28px 60px rgba(16, 24, 40, 0.12);
  --shadow-accent: 0 10px 18px rgba(16, 185, 129, 0.25);
  --radius: 16px;
  --max-width: 1120px;
  --body-gradient: radial-gradient(
      720px 320px at 10% -10%,
      rgba(16, 185, 129, 0.14),
      transparent 60%
    ),
    radial-gradient(
      520px 280px at 90% -20%,
      rgba(59, 130, 246, 0.08),
      transparent 60%
    ),
    linear-gradient(180deg, #ffffff 0%, #f9fafb 55%, #f3f4f6 100%);
}

html.dark {
  color-scheme: dark;
  --color-background: #121212;
  --color-background-secondary: #0f172a;
  --color-background-tertiary: #1f2937;
  --color-text: #f9fafb;
  --color-text-secondary: #d1d5db;
  --color-text-tertiary: #9ca3af;
  --color-on-primary: #ffffff;
  --color-border: #374151;
  --color-border-secondary: #4b5563;
  --color-primary-soft: rgba(16, 185, 129, 0.2);
  --color-glow: rgba(16, 185, 129, 0.28);
  --color-glow-accent: rgba(59, 130, 246, 0.24);
  --color-surface: rgba(15, 23, 42, 0.92);
  --color-surface-strong: rgba(17, 24, 39, 0.96);
  --color-surface-border: rgba(55, 65, 81, 0.8);
  --color-surface-footer: rgba(17, 24, 39, 0.95);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 14px 28px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 26px 60px rgba(0, 0, 0, 0.45);
  --shadow-accent: 0 12px 22px rgba(16, 185, 129, 0.2);
  --body-gradient: radial-gradient(
      720px 320px at 10% -10%,
      rgba(16, 185, 129, 0.18),
      transparent 60%
    ),
    radial-gradient(
      520px 280px at 90% -20%,
      rgba(59, 130, 246, 0.16),
      transparent 60%
    ),
    linear-gradient(180deg, #0b0f12 0%, #111827 55%, #0b0f12 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--color-text);
  background: var(--body-gradient);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
  filter: blur(0px);
  animation: float-glow 22s ease-in-out infinite;
}

body::before {
  top: -20vmax;
  left: -10vmax;
  background: radial-gradient(circle, var(--color-glow), transparent 70%);
}

body::after {
  bottom: -30vmax;
  right: -10vmax;
  background: radial-gradient(circle, var(--color-glow-accent), transparent 70%);
  animation-delay: -6s;
}

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

a:hover {
  color: var(--color-primary-dark);
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-surface-border);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
  backdrop-filter: blur(12px);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 0;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 20px;
  color: inherit;
}

.logo-image {
  height: 32px;
  width: auto;
}

.logo-text {
  letter-spacing: -0.01em;
}

.site-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.site-nav a {
  padding: 6px 12px;
  border-radius: 999px;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  color: var(--color-text);
  border-bottom-color: transparent;
  background: var(--color-primary-soft);
}

.header-actions {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.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;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
}

.lang-select {
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-background);
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 600;
  padding: 0 14px;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  appearance: none;
}

.lang-select:hover {
  border-color: rgba(16, 185, 129, 0.35);
  color: var(--color-text);
  transform: translateY(-1px);
}

.lang-select:focus {
  outline: none;
}

.lang-select:focus-visible {
  outline: 2px solid rgba(16, 185, 129, 0.35);
  outline-offset: 2px;
}

.social-link {
  font-weight: 600;
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--color-background);
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.social-link:hover {
  border-color: rgba(16, 185, 129, 0.35);
  color: var(--color-text);
  transform: translateY(-1px);
}

.social-link:focus {
  outline: none;
}

.social-link:focus-visible {
  outline: 2px solid rgba(16, 185, 129, 0.35);
  outline-offset: 2px;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-background);
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.lang-toggle {
  width: 40px;
  height: 40px;
  min-width: 40px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-background);
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.04em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.lang-toggle-label {
  display: block;
  line-height: 1;
}

.lang-toggle:hover {
  border-color: rgba(16, 185, 129, 0.35);
  color: var(--color-text);
  transform: translateY(-1px);
}

.lang-toggle:focus {
  outline: none;
}

.lang-toggle:focus-visible {
  outline: 2px solid rgba(16, 185, 129, 0.35);
  outline-offset: 2px;
}

.theme-toggle:hover {
  border-color: rgba(16, 185, 129, 0.35);
  color: var(--color-text);
  transform: translateY(-1px);
}

.theme-toggle:focus {
  outline: none;
}

.theme-toggle:focus-visible {
  outline: 2px solid rgba(16, 185, 129, 0.35);
  outline-offset: 2px;
}

.theme-toggle-icon svg {
  width: 18px;
  height: 18px;
}

.theme-toggle .icon-sun,
.theme-toggle[data-theme="light"] .icon-sun {
  display: none;
}

.theme-toggle[data-theme="dark"] .icon-sun {
  display: inline-block;
}

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

.social-icon {
  padding: 8px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.social-icon svg {
  width: 18px;
  height: 18px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 90px 0 70px;
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -120px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, var(--color-glow), transparent 70%);
  opacity: 0.7;
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: center;
  background: var(--color-surface-strong);
  border: 1px solid var(--color-surface-border);
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.hero-copy {
  max-width: 640px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.rotating-words {
  display: inline-block;
  color: var(--color-primary-dark);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.rotating-words::after {
  content: ".";
  color: var(--color-text);
}

.rotating-words.is-fading {
  opacity: 0;
  transform: translateY(6px);
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.cta-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.button-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.button-icon svg {
  width: 18px;
  height: 18px;
}

.instagram-logo {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.instagram-logo svg {
  width: 18px;
  height: 18px;
  display: block;
}

.button-icon .instagram-logo {
  width: 18px;
  height: 18px;
}

.button.primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-accent);
}

.button.primary:hover {
  background: var(--color-primary-dark);
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(5, 150, 105, 0.32);
}

.button.secondary {
  background: var(--color-background);
  border-color: var(--color-border-secondary);
  color: var(--color-text-secondary);
}

.button.secondary:hover {
  background: var(--color-background-tertiary);
  color: var(--color-text);
}

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


.section {
  padding: 70px 0;
  scroll-margin-top: 90px;
}

.section h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 16px;
  letter-spacing: -0.01em;
  display: inline-block;
}

.section h2::after {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  border-radius: 999px;
  margin-top: 10px;
  background: linear-gradient(90deg, var(--color-primary), rgba(16, 185, 129, 0.2));
}

.section-lead {
  font-size: 1.05rem;
  max-width: 760px;
  margin: 0 0 14px;
}

.section-body {
  color: var(--color-text-secondary);
  max-width: 760px;
  margin: 0;
}

.panel {
  background: transparent;
}

.panel .container {
  background: var(--color-surface-strong);
  border: 1px solid var(--color-surface-border);
  border-radius: 20px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.feature-item {
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--color-border);
  background: var(--color-background);
  cursor: pointer;
  text-align: left;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-radius: 14px;
  color: inherit;
  font: inherit;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.feature-item:hover,
.feature-item:focus {
  border-color: rgba(16, 185, 129, 0.45);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-item:focus {
  outline: none;
}

.feature-item:focus-visible {
  outline: 2px solid rgba(16, 185, 129, 0.35);
  outline-offset: 2px;
}

.feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-icon svg {
  width: 18px;
  height: 18px;
}

.feature-content {
  display: block;
}

.feature-title {
  display: block;
}

.feature-detail {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-top: 6px;
  opacity: 1;
  transform: none;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.faq-item {
  padding: 20px;
  border-radius: 14px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.faq-item:hover,
.faq-item:focus {
  border-color: rgba(16, 185, 129, 0.45);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.faq-item:focus {
  outline: none;
}

.faq-item:focus-visible {
  outline: 2px solid rgba(16, 185, 129, 0.35);
  outline-offset: 2px;
}

.faq-item h3 {
  margin-top: 0;
  margin-bottom: 8px;
}

.site-footer {
  padding: 40px 0 60px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-footer);
}

.footer-inner {
  display: grid;
  gap: 18px;
  align-items: center;
}

.footer-title {
  font-size: 18px;
  margin: 0 0 6px;
  font-weight: 700;
}

.footer-note {
  margin: 0;
  color: var(--color-text-secondary);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.footer-copy {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-tertiary);
}

[data-animate] {
  animation: fade-up 0.6s ease both;
}

.feature-item,
.faq-item {
  animation: fade-up 0.6s ease both;
  animation-delay: calc(var(--item-delay, 0s));
}

.feature-item:nth-child(1),
.faq-item:nth-child(1) {
  --item-delay: 0.04s;
}

.feature-item:nth-child(2),
.faq-item:nth-child(2) {
  --item-delay: 0.08s;
}

.feature-item:nth-child(3),
.faq-item:nth-child(3) {
  --item-delay: 0.12s;
}

.feature-item:nth-child(4),
.faq-item:nth-child(4) {
  --item-delay: 0.16s;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float-glow {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(6vmax, -3vmax, 0) scale(1.05);
  }
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
}

@media (max-width: 900px) {
  .site-nav {
    order: 3;
    width: 100%;
  }

  .header-actions {
    order: 2;
    margin-left: auto;
  }

  .social-link {
    margin-left: 0;
  }

  .hero {
    padding-top: 70px;
  }
}

@media (max-width: 600px) {
  .hero-inner {
    padding: 28px;
  }

  .panel .container {
    padding: 24px;
  }

  .cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .section {
    padding: 60px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .rotating-words {
    transform: none;
  }
}