/* RawComp showcase — design tokens */
:root {
  --bg: #0a0b0f;
  --bg-elevated: #101218;
  --bg-card: #141820;
  --bg-card-hover: #1a1f2a;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f2f4f8;
  --text-muted: #9aa3b5;
  --text-dim: #6b7589;
  --accent: #5ec4b8;
  --accent-dim: rgba(94, 196, 184, 0.14);
  --accent-glow: rgba(94, 196, 184, 0.35);
  --secondary: #e8b44c;
  --secondary-dim: rgba(232, 180, 76, 0.15);
  --red: #d4a855;
  --radius: 12px;
  --radius-lg: 20px;
  --font: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --header-h: 64px;
  --container: min(1120px, 100% - 2rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

a:hover {
  color: #8ed9d0;
}

code {
  font-family: var(--mono);
  font-size: 0.875em;
  padding: 0.15em 0.4em;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 6px;
}

.container {
  width: var(--container);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 1rem;
  z-index: 1000;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
  border-radius: 8px;
  font-weight: 600;
}

.skip-link:focus {
  left: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(7, 8, 13, 0.75);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.125rem;
}

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

.brand-icon {
  border-radius: 8px;
  box-shadow: 0 0 0 1px var(--border);
}

.nav {
  display: none;
  gap: 1.5rem;
}

.nav a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-toggle {
  display: inline-flex;
  padding: 3px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 10px;
  gap: 2px;
}

.lang-option {
  padding: 0.35rem 0.65rem;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 7px;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s;
}

.lang-option:hover {
  color: var(--text);
}

.lang-option.is-active {
  background: var(--accent-dim);
  color: var(--accent);
  box-shadow: 0 0 0 1px rgba(94, 196, 184, 0.25);
}

.lang-toggle-mobile {
  margin: 0.5rem 0 0.75rem;
  align-self: flex-start;
}

html[data-lang="zh"] body {
  font-family: var(--font), "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  margin-left: 0.25rem;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  padding: 0.5rem 1rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.mobile-nav a {
  padding: 0.75rem 0;
  color: var(--text-muted);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}

.mobile-nav a:last-child {
  border-bottom: none;
  color: var(--accent);
}

.mobile-nav[hidden] {
  display: none;
}

@media (max-width: 899px) {
  .header-actions .lang-toggle:not(.lang-toggle-mobile) {
    display: none;
  }

  .header-actions .btn-ghost {
    display: none;
  }
}

@media (min-width: 900px) {
  .nav {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .lang-toggle-mobile {
    display: none;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-family: inherit;
  font-weight: 600;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s, transform 0.15s var(--ease), box-shadow 0.2s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.75rem 1.35rem;
  font-size: 0.9375rem;
}

.btn-primary {
  background: linear-gradient(135deg, #7ad4c9, var(--accent));
  color: #041210;
  box-shadow: 0 0 28px var(--accent-glow);
}

.btn-primary:hover {
  color: #041210;
  box-shadow: 0 0 36px rgba(94, 196, 184, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.btn-accent {
  background: linear-gradient(135deg, var(--secondary), #c99a2e);
  color: #1a1408;
  box-shadow: 0 0 24px rgba(232, 180, 76, 0.35);
}

.btn-accent:hover {
  color: #1a1408;
  box-shadow: 0 0 32px rgba(232, 180, 76, 0.45);
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(3rem, 8vw, 5rem) 0 clamp(4rem, 10vw, 6rem);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -15%;
  left: -5%;
  width: 55%;
  max-width: 650px;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(232, 180, 76, 0.22) 0%, transparent 65%);
  filter: blur(80px);
  opacity: 0.6;
  pointer-events: none;
}

.hero-glow-2 {
  position: absolute;
  top: 10%;
  right: -10%;
  width: 50%;
  max-width: 600px;
  aspect-ratio: 1;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 65%);
  filter: blur(90px);
  opacity: 0.45;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr 1.1fr;
    gap: 2.5rem;
  }
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border-radius: 999px;
  background: var(--secondary-dim);
  color: var(--secondary);
  border: 1px solid rgba(232, 180, 76, 0.35);
}

.badge-muted {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: rgba(94, 196, 184, 0.25);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
}

.hero-lead {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--text-muted);
  max-width: 36em;
  margin: 0 0 2rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* App mock (screenshot) */
.app-mock {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  box-shadow:
    0 28px 90px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  animation: float-mock 5s var(--ease) infinite alternate;
}

.app-mock__shot {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

@keyframes float-mock {
  from { transform: translateY(0); }
  to { transform: translateY(-8px); }
}

/* Highlights */
.highlights {
  padding: 0 0 4rem;
  margin-top: -1rem;
}

.highlights-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 700px) {
  .highlights-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.highlight-card {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: background 0.25s var(--ease), border-color 0.25s, transform 0.25s var(--ease);
}

.highlight-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.highlight-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  border-radius: 12px;
  background: var(--accent-dim);
  color: var(--accent);
}

.highlight-icon.pink {
  background: var(--secondary-dim);
  color: var(--secondary);
}

.highlight-icon svg {
  width: 22px;
  height: 22px;
}

.highlight-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.highlight-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Sections */
.section {
  padding: clamp(3.5rem, 8vw, 5rem) 0;
}

.section-alt {
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.02) 50%, transparent);
}

.section-header {
  max-width: 42rem;
  margin-bottom: 2.5rem;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

.section-header h2 {
  font-size: clamp(1.65rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  line-height: 1.2;
}

.section-lead {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.feature-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 600px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  padding: 1.35rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, background 0.2s, transform 0.2s var(--ease);
}

.feature-card:hover {
  border-color: rgba(94, 196, 184, 0.22);
  background: var(--bg-card-hover);
  transform: translateY(-1px);
}

.feature-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.feature-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Split section */
.split-section {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 860px) {
  .split-section {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.check-list {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-muted);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.video-frame {
  margin: 0;
  padding: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.video-frame a {
  display: block;
  position: relative;
  border-radius: calc(var(--radius-lg) - 8px);
  overflow: hidden;
}

.video-frame img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}

.video-frame a:hover img {
  transform: scale(1.03);
}

.play-badge {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.25);
  transition: background 0.2s;
}

.video-frame a:hover .play-badge {
  background: rgba(0, 0, 0, 0.35);
}

.play-badge svg {
  width: 64px;
  height: 64px;
  filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.5));
}

.video-frame figcaption {
  margin-top: 0.75rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Platform chips */
.platform-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
}

.platform-chips li {
  padding: 0.55rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.platform-chips li:hover {
  border-color: rgba(232, 180, 76, 0.35);
  color: var(--text);
  background: var(--bg-card-hover);
}

.platform-chips li.highlight {
  background: linear-gradient(135deg, var(--secondary-dim), var(--accent-dim));
  border-color: rgba(94, 196, 184, 0.25);
  color: var(--text);
}

.lang-note {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Ecosystem */
.eco-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 700px) {
  .eco-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.eco-card {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, transform 0.2s var(--ease);
}

.eco-card:hover {
  border-color: rgba(94, 196, 184, 0.25);
  transform: translateY(-2px);
}

.eco-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.eco-card h3 a {
  color: var(--text);
}

.eco-card h3 a:hover {
  color: var(--accent);
}

.eco-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Security */
.privacy-block {
  display: grid;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

@media (min-width: 600px) {
  .privacy-block {
    grid-template-columns: auto 1fr;
    align-items: start;
    padding: 2.5rem;
  }
}

.privacy-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--accent-dim);
  color: var(--accent);
}

.privacy-icon svg {
  width: 28px;
  height: 28px;
}

/* Install */
.install-steps {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.install-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
}

.step-num {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  background: linear-gradient(135deg, var(--secondary-dim), var(--accent-dim));
  color: var(--accent);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.install-step h3 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}

.install-step p {
  margin: 0 0 0.75rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.code-block {
  position: relative;
  border-radius: var(--radius);
  background: #0a0d14;
  border: 1px solid var(--border);
  overflow: hidden;
}

.code-block pre {
  margin: 0;
  padding: 1rem 4.5rem 1rem 1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.55;
  color: #c8d0e0;
}

.copy-btn {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  padding: 0.35rem 0.65rem;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

.copy-btn.copied {
  color: var(--accent);
  border-color: rgba(94, 196, 184, 0.35);
}

.permissions-card {
  margin-top: 2.5rem;
  padding: 1.5rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--accent);
}

.permissions-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
}

.permissions-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.permissions-card li {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Stack */
.stack-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 600px) {
  .stack-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.stack-card {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.stack-card h3 {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--secondary);
}

.stack-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* CTA band */
.cta-band {
  padding: clamp(3rem, 8vw, 4.5rem) 0;
  background: linear-gradient(135deg, rgba(232, 180, 76, 0.08), rgba(94, 196, 184, 0.08));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cta-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: flex-start;
}

@media (min-width: 700px) {
  .cta-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.cta-inner h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 1.85rem);
}

.cta-inner p {
  margin: 0;
  color: var(--text-muted);
  max-width: 28rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Footer */
.site-footer {
  padding: 2rem 0 2.5rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
}

.footer-brand img {
  border-radius: 6px;
}

.footer-meta {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-dim);
}

.footer-meta a {
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-left: auto;
}

@media (max-width: 600px) {
  .footer-links {
    margin-left: 0;
  }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .app-mock { animation: none; }
  .btn:active { transform: none; }
}