:root {
  --bg: #0F0F12;
  --surface: #1A1A1F;
  --surface-2: #24242B;
  --border: #2E2E36;
  --text: #F4F4F6;
  --text-soft: #D0D0D6;
  --muted: #9A9AA5;
  --accent: #FF6B4A;
  --accent-tint: rgba(255, 107, 74, 0.15);
  --like: #FF4D6D;
  --dislike: #6C8CFF;
  --danger: #FF5252;
  --warning: #FFAB40;
  --grad-icon-face: linear-gradient(135deg, #FFC08F 0%, #FF7A52 45%, #F2463A 100%);
  --grad-icon-bg: linear-gradient(135deg, #2B1B2A 0%, #121016 55%, #08080B 100%);
  --font: -apple-system, BlinkMacSystemFont, system-ui, "Segoe UI", Roboto, sans-serif;
  --radius-input: 14px;
  --radius-card: 16px;
  --radius-media: 18px;
  --radius-chip: 10px;
  --radius-pill: 9999px;
  --button-height: 52px;
  --container-max: 1040px;
  --content-max: 760px;
}

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

html {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.18s ease, opacity 0.18s ease;
}

img, svg {
  display: block;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.content-narrow {
  max-width: var(--content-max);
}

/* Navbar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 15, 18, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  user-select: none;
}

.brand-logo .logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--grad-icon-bg);
  border: 1px solid rgba(255, 107, 74, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.brand-logo .logo-mark svg {
  width: 20px;
  height: 20px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  padding: 6px 0;
  position: relative;
  transition: color 0.18s ease;
}

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

.nav-link.active {
  color: var(--accent);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent);
  border-radius: 2px;
}

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

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.18s ease;
}

.lang-btn.active {
  background: var(--surface-2);
  color: var(--text);
}

/* Mobile Menu Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
}

/* Hero Section */
.hero-section {
  padding: 72px 0 60px;
  text-align: center;
  position: relative;
}

.hero-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 480px;
  height: 280px;
  background: radial-gradient(circle, rgba(255, 107, 74, 0.12) 0%, rgba(15, 15, 18, 0) 70%);
  filter: blur(48px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.4px;
  color: var(--text-soft);
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent);
  box-shadow: 0 0 8px rgba(255, 107, 74, 0.8);
}

.app-icon-display {
  width: 108px;
  height: 108px;
  border-radius: 26px;
  background: var(--grad-icon-bg);
  border: 1px solid rgba(255, 107, 74, 0.32);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.04);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.app-icon-display:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.7), 0 0 20px rgba(255, 107, 74, 0.2);
}

.app-icon-display svg {
  width: 68px;
  height: 68px;
}

.hero-title {
  font-size: 38px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.6px;
  color: var(--text);
  margin-bottom: 16px;
  max-width: 620px;
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.55;
  color: var(--text-soft);
  max-width: 580px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  height: var(--button-height);
  padding: 0 24px;
  border-radius: var(--radius-input);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s ease;
  user-select: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: #ff5934;
  box-shadow: 0 6px 18px rgba(255, 107, 74, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

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

.btn-secondary:hover {
  background-color: var(--surface-2);
  border-color: #3e3e48;
}

.btn-apple {
  background-color: #000000;
  color: #FFFFFF;
  border: 1px solid var(--border);
  padding: 0 22px;
}

.btn-apple:hover {
  background-color: #121216;
  border-color: var(--muted);
}

.btn-apple svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.btn-apple .btn-text-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  line-height: 1.15;
}

.btn-apple .btn-small-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2px;
  color: var(--muted);
}

.btn-apple .btn-main-label {
  font-size: 15px;
  font-weight: 700;
}

/* App Philosophy Cards (Superficial, minimal, no screenshots) */
.section {
  padding: 60px 0;
}

.section-header {
  margin-bottom: 36px;
  text-align: center;
}

.section-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: var(--text);
  margin-bottom: 10px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-soft);
  max-width: 520px;
  margin: 0 auto;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.philosophy-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.philosophy-card:hover {
  border-color: rgba(255, 107, 74, 0.35);
  transform: translateY(-2px);
}

.philosophy-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--accent);
}

.philosophy-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.philosophy-desc {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-soft);
}

/* Minimalist App Interaction showcase (pure code component, NO screenshots) */
.showcase-wrapper {
  margin-top: 48px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
}

.showcase-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: center;
}

@media (max-width: 820px) {
  .showcase-inner {
    grid-template-columns: 1fr;
  }
}

.showcase-copy h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
}

.showcase-copy p {
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-soft);
  margin-bottom: 20px;
}

.showcase-demo-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-media);
  padding: 20px;
}

.demo-user-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.demo-user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.demo-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FF6B4A, #FFB36B);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  color: #FFFFFF;
}

.demo-user-meta {
  display: flex;
  flex-direction: column;
}

.demo-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.demo-handle {
  font-size: 12px;
  color: var(--muted);
}

.demo-chips {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-chip);
  font-size: 12px;
  font-weight: 500;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-soft);
}

.chip.active {
  background: var(--accent-tint);
  border-color: rgba(255, 107, 74, 0.4);
  color: var(--accent);
}

.demo-content-quote {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-soft);
  margin-bottom: 16px;
  font-style: italic;
  padding-left: 12px;
  border-left: 2px solid var(--accent);
}

.demo-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.action-vote {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  cursor: default;
}

.action-vote.like {
  color: var(--like);
}

.action-vote.dislike {
  color: var(--dislike);
}

.vote-hint {
  font-size: 12px;
  color: var(--muted);
  margin-left: auto;
}

/* Support & Privacy CTA Bar */
.bottom-cta {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 36px;
  text-align: center;
  margin: 40px 0 60px;
}

.bottom-cta h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
}

.bottom-cta p {
  color: var(--text-soft);
  font-size: 15px;
  margin-bottom: 24px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Forms & Input */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: 0.2px;
}

.form-control {
  width: 100%;
  height: var(--button-height);
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  padding: 0 16px;
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.18);
}

.form-control::placeholder {
  color: var(--muted);
}

textarea.form-control {
  height: 140px;
  padding: 14px 16px;
  resize: vertical;
}

.form-help {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

.form-feedback {
  display: none;
  padding: 14px 18px;
  border-radius: var(--radius-input);
  font-size: 14px;
  margin-bottom: 20px;
}

.form-feedback.success {
  display: block;
  background: rgba(46, 213, 115, 0.12);
  border: 1px solid rgba(46, 213, 115, 0.3);
  color: #4cd137;
}

.form-feedback.error {
  display: block;
  background: rgba(255, 82, 82, 0.12);
  border: 1px solid rgba(255, 82, 82, 0.3);
  color: var(--danger);
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 40px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color 0.18s ease;
}

.faq-item:hover {
  border-color: #3f3f4a;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  gap: 14px;
}

.faq-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: transform 0.2s ease, color 0.2s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  padding: 0 20px;
  color: var(--text-soft);
  font-size: 14.5px;
  line-height: 1.6;
}

.faq-item.open .faq-answer {
  padding-bottom: 18px;
}

/* Legal / Privacy Document Layout */
.legal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  margin-bottom: 40px;
}

.legal-card h1 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--text);
}

.legal-card .doc-meta {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.legal-card h2 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  margin-top: 28px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.legal-card h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 18px;
  background-color: var(--accent);
  border-radius: 2px;
}

.legal-card p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-soft);
  margin-bottom: 14px;
}

.legal-card ul {
  margin: 10px 0 18px 20px;
  color: var(--text-soft);
  font-size: 14.5px;
  line-height: 1.6;
}

.legal-card li {
  margin-bottom: 8px;
}

.legal-highlight-box {
  background: var(--surface-2);
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  padding: 16px 20px;
  margin: 20px 0;
}

.legal-highlight-box p {
  margin-bottom: 0;
  color: var(--text);
  font-size: 14.5px;
}

/* Info Contact Card */
.contact-info-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  margin-bottom: 24px;
}

.contact-info-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(255, 107, 74, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-info-content h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-info-content a {
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.contact-info-content a:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background-color: var(--surface);
  padding: 40px 0 32px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 14px;
  color: var(--muted);
  transition: color 0.18s ease;
}

.footer-link:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 13px;
  color: var(--muted);
}

.apple-badge-note {
  font-size: 12px;
  color: var(--muted);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 28px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .philosophy-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 16px 20px;
    gap: 12px;
    box-shadow: 0 10px 24px rgba(0,0,0,0.6);
  }
  .mobile-nav-toggle {
    display: flex;
  }
  .form-card, .legal-card {
    padding: 24px 18px;
  }
}