/* ========================================================================== 
   Kirin static website CSS
   ========================================================================== */
:root {
  --color-bg: #F9FAFB;
  --color-text-main: #1F1F1F;
  --color-text-muted: #5F6368;
  --color-kirin-coral: #F15470;
  --color-kirin-coral-hover: #e0405b;
  --color-teal-aquamarine: #00A86B;
  --color-border: #E8EAED;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-title: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html,
body {
  width: 100%;
  min-height: 100%;
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  z-index: 2000;
  background: #fff;
  color: #000;
  padding: 10px 14px;
  border-radius: 8px;
}
.skip-link:focus { left: 12px; }

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(249, 250, 251, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: var(--transition-smooth);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-family: var(--font-title);
  font-weight: 500;
  font-size: 24px;
  color: var(--color-text-main);
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.logo-image {
  height: 30px;
  width: auto;
  margin-right: 6px;
}

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

.nav-link {
  text-decoration: none;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  color: var(--color-text-main);
  transition: var(--transition-smooth);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-kirin-coral);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.lang-link {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 4px 2px;
}

.lang-link.active,
.lang-link:hover {
  color: var(--color-kirin-coral);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 100px;
  font-family: var(--font-body);
  font-weight: 500;
  transition: var(--transition-smooth);
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-text-main);
  color: #FFFFFF;
  border: 1px solid var(--color-text-main);
}

.btn-primary:hover {
  background-color: #333333;
  border-color: #333333;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text-main);
  border: 1px solid var(--color-text-main);
}

.btn-secondary:hover {
  background-color: rgba(0, 0, 0, 0.03);
  transform: translateY(-2px);
}

.btn-sm {
  font-size: 14px;
  padding: 10px 20px;
}

.btn-lg {
  font-size: 16px;
  padding: 14px 28px;
  gap: 10px;
}

.arrow { margin-left: 6px; transition: transform 0.3s ease; }
.btn:hover .arrow { transform: translateX(4px); }
.arrow-diagonal { transition: transform 0.3s ease; }
.btn:hover .arrow-diagonal { transform: translate(2px, -2px); }
#cta-download .arrow-diagonal,
#header-cta .arrow { color: var(--color-kirin-coral); }
#cta-phones .arrow { color: var(--color-teal-aquamarine); }

.hero {
  padding-top: 140px;
  padding-bottom: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.hero-container {
  max-width: 980px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 54px;
  line-height: 1.15;
  color: var(--color-text-main);
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 720px;
  margin-bottom: 40px;
}

.hero-buttons {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.download-btn-wrapper,
.early-btn-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.btn-subtext {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.2px;
}

.mockup-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  perspective: 1000px;
  margin-top: 40px;
}

.mockup-container { position: relative; display: inline-block; }
.mockup-image {
  max-width: 100%;
  height: auto;
  width: 480px;
  border-radius: 10px;
  box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.15);
  display: block;
}
.mockup-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  max-width: 65%;
  height: auto;
  pointer-events: none;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  width: 100%;
  margin-top: 70px;
  text-align: left;
}

.feature-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.035);
}

.feature-card h2 {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.2px;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.6;
}

.page-content {
  padding-top: 160px;
  padding-bottom: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: calc(100vh - 180px);
}

.content-container {
  max-width: 820px;
  width: 100%;
  padding: 0 24px;
  text-align: left;
}

.page-title {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: 48px;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 40px;
  text-align: left;
}

.compat-detail {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--color-text-main);
  text-align: left;
  margin-bottom: 20px;
}

.help-section,
.changelog-section,
.news-section {
  max-width: 820px;
  width: 100%;
  margin-top: 20px;
  text-align: left;
}

.faq-item {
  padding-bottom: 26px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}
.faq-item:last-child { border-bottom: none; }

.help-question,
.changelog-version,
.news-title {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--color-text-main);
  letter-spacing: -0.3px;
}

.help-answer,
.news-body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 14px;
  color: var(--color-text-muted);
}

.changelog-list {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-muted);
  padding-left: 20px;
  margin-bottom: 34px;
}
.changelog-list li { margin-bottom: 8px; }

.news-item {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 30px;
}
.news-item:last-child { border-bottom: none; }
.news-date {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-muted);
  font-weight: 500;
  display: block;
  margin-bottom: 8px;
}

.footer {
  background-color: #0B0B0C;
  color: #FFFFFF;
  padding: 80px 0 40px 0;
  border-top: 1px solid #1C1C1E;
  width: 100%;
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
  text-align: left;
}
.footer-brand-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}
.footer-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 22px;
  color: #FFFFFF;
}
.footer-logo-img {
  height: 26px;
  width: auto;
  margin-right: 5px;
}
.footer-brand-desc {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: #8E8E93;
  max-width: 320px;
}
.footer-links-col h4 {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  color: #FFFFFF;
  letter-spacing: -0.2px;
}
.footer-links-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links-col a {
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 14px;
  color: #8E8E93;
  transition: var(--transition-smooth);
}
.footer-links-col a:hover { color: #FFFFFF; }
.footer-divider {
  border: 0;
  border-top: 1px solid #1C1C1E;
  margin-bottom: 30px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-copyright {
  font-family: var(--font-body);
  font-size: 13px;
  color: #8E8E93;
}

@media (max-width: 980px) {
  .nav-list { gap: 16px; }
  .nav-link { font-size: 14px; }
  .hero-title { font-size: 44px; }
  .feature-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .header-container { padding: 14px 18px; }
  .nav { display: none; }
  .header-actions { gap: 10px; }
  .btn-sm { padding: 9px 14px; }
  .hero { padding-top: 120px; }
  .hero-title { font-size: 34px; letter-spacing: -0.5px; }
  .hero-subtitle { font-size: 16px; margin-bottom: 32px; }
  .mockup-image { width: 320px; }
  .page-content { padding-top: 120px; }
  .page-title { font-size: 36px; }
  .footer { padding: 60px 0 30px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; margin-bottom: 40px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; text-align: left; }
}

@media (max-width: 420px) {
  .logo-text { display: none; }
  .language-switcher { font-size: 12px; }
  .hero-buttons { flex-direction: column; align-items: center; }
}