:root {
  --bg: #0f172a;
  --bg2: #111c33;
  --panel: #1a2744;
  --panel2: #223255;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --cyan: #22d3ee;
  --orange: #fb923c;
  --lime: #a3e635;
  --pink: #f472b6;
  --blue: #60a5fa;
  --radius: 18px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "Cascadia Mono", "Consolas", "Courier New", monospace;
  --tile-shadow: 0 18px 0 #0b1224, 0 28px 40px rgba(0, 0, 0, 0.45);
  --tile-shadow-sm: 0 10px 0 #0b1224, 0 18px 28px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at 15% 10%, rgba(34, 211, 238, 0.12), transparent 30%),
    radial-gradient(circle at 85% 20%, rgba(251, 146, 60, 0.12), transparent 28%),
    linear-gradient(180deg, #0b1326 0%, var(--bg) 45%, #0a1020 100%);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button, .btn { font: inherit; cursor: pointer; border: none; }

.container { width: min(1160px, calc(100% - 2rem)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(12px);
  background: rgba(15, 23, 42, 0.86);
  border-bottom: 1px solid rgba(96, 165, 250, 0.15);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #0f172a;
  font-size: 0.8rem;
  font-weight: 900;
  background: linear-gradient(145deg, var(--cyan), var(--orange));
  box-shadow: 0 8px 0 #0b1224, 0 12px 20px rgba(0, 0, 0, 0.35);
  transform: rotate(-6deg);
}

.logo-text span { color: var(--cyan); }

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.nav-links a {
  padding: 0.45rem 0.85rem;
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.92rem;
  background: transparent;
  transition: 0.18s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--panel);
  box-shadow: 0 6px 0 #0b1224;
  transform: translateY(-2px);
}

.lang-switch {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border-radius: 14px;
  background: var(--panel);
  box-shadow: 0 6px 0 #0b1224;
}

.lang-switch button {
  background: transparent;
  color: var(--muted);
  padding: 0.35rem 0.7rem;
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 700;
}

.lang-switch button.active {
  color: #0f172a;
  background: linear-gradient(145deg, var(--cyan), #67e8f9);
}

.hero { padding: 3rem 0 2.2rem; perspective: 1200px; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tag {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  color: #0f172a;
  background: var(--lime);
  box-shadow: 0 4px 0 #3f6212;
}

.tag:nth-child(2) { background: var(--cyan); box-shadow: 0 4px 0 #0e7490; }
.tag:nth-child(3) { background: var(--orange); box-shadow: 0 4px 0 #c2410c; }
.tag:nth-child(4) { background: var(--pink); box-shadow: 0 4px 0 #be185d; }

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3.15rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 0.9rem;
}

.hero h1 em {
  font-style: normal;
  color: var(--cyan);
}

.hero-lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 52ch;
  margin-bottom: 1.35rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.9rem 1.3rem;
  border-radius: 14px;
  font-weight: 800;
  transition: 0.16s ease;
}

.btn-primary {
  color: #0f172a;
  background: linear-gradient(145deg, var(--cyan), #67e8f9);
  box-shadow: 0 8px 0 #0e7490, 0 14px 24px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover { transform: translateY(-3px); }
.btn-primary:active {
  transform: translateY(3px);
  box-shadow: 0 3px 0 #0e7490;
}

.btn-secondary {
  color: var(--text);
  background: var(--panel2);
  box-shadow: 0 8px 0 #0b1224, 0 14px 24px rgba(0, 0, 0, 0.25);
}

.btn-secondary:hover { transform: translateY(-3px); color: var(--cyan); }
.btn-secondary:active {
  transform: translateY(3px);
  box-shadow: 0 3px 0 #0b1224;
}

.btn-sm { padding: 0.6rem 1rem; font-size: 0.88rem; border-radius: 12px; }

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
}

.trust-item {
  padding: 0.8rem;
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--tile-shadow-sm);
  font-size: 0.8rem;
  color: var(--muted);
}

.trust-item strong {
  display: block;
  color: var(--text);
  font-size: 1.05rem;
  margin-bottom: 0.15rem;
}

.tile-stage {
  position: relative;
  min-height: 420px;
  transform-style: preserve-3d;
}

.tile {
  background: linear-gradient(160deg, var(--panel2), var(--panel));
  border-radius: var(--radius);
  box-shadow: var(--tile-shadow);
  border: 1px solid rgba(148, 163, 184, 0.12);
  overflow: hidden;
  transition: 0.2s ease;
}

.tile:hover {
  transform: translateY(-6px) rotateX(2deg);
}

.tile-a {
  position: absolute;
  inset: 0 8% auto 0;
  transform: rotate(-4deg) rotateY(-8deg);
  z-index: 2;
}

.tile-b {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 68%;
  transform: rotate(5deg) rotateY(8deg);
  z-index: 3;
  background: linear-gradient(160deg, #2a3d66, #1d2d4d);
}

.tile-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  background: rgba(15, 23, 42, 0.45);
}

.tile-badge {
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  color: #0f172a;
  background: var(--orange);
  font-size: 0.7rem;
  font-weight: 800;
}

.tile img {
  width: 100%;
  aspect-ratio: 16/11;
  object-fit: cover;
}

.tile-b img { aspect-ratio: 16/10; }

.section { padding: 3.1rem 0; }
.section-alt {
  background: linear-gradient(180deg, rgba(26, 39, 68, 0.35), rgba(15, 23, 42, 0.2));
}

.section-head { margin-bottom: 1.5rem; max-width: 62ch; }

.eyebrow {
  display: inline-block;
  margin-bottom: 0.55rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #0f172a;
  background: var(--orange);
  box-shadow: 0 4px 0 #c2410c;
}

.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.45rem;
}

.section-head p { color: var(--muted); }

.platform-grid,
.feature-grid,
.compat-grid,
.reco-grid,
.scene-grid,
.faq-grid,
.step-grid,
.download-grid {
  display: grid;
  gap: 1.1rem;
}

.platform-grid { grid-template-columns: repeat(5, 1fr); }
.feature-grid,
.scene-grid,
.faq-grid { grid-template-columns: repeat(3, 1fr); }
.compat-grid { grid-template-columns: repeat(4, 1fr); }
.reco-grid,
.download-grid,
.step-grid { grid-template-columns: repeat(3, 1fr); }

.card {
  background: linear-gradient(165deg, #243659, #1a2744);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--tile-shadow-sm);
  border: 1px solid rgba(148, 163, 184, 0.1);
  transition: 0.18s ease;
  transform: translateZ(0);
}

.card:nth-child(3n+1):hover { transform: translateY(-8px) rotate(-1deg); }
.card:nth-child(3n+2):hover { transform: translateY(-8px) rotate(1deg); }
.card:nth-child(3n):hover { transform: translateY(-8px) rotate(-0.5deg); }

.card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.45rem;
}

.card p,
.card li { color: var(--muted); font-size: 0.94rem; }

.card.tint-cyan { box-shadow: 0 10px 0 #0e7490, 0 18px 28px rgba(0, 0, 0, 0.35); }
.card.tint-orange { box-shadow: 0 10px 0 #c2410c, 0 18px 28px rgba(0, 0, 0, 0.35); }
.card.tint-pink { box-shadow: 0 10px 0 #be185d, 0 18px 28px rgba(0, 0, 0, 0.35); }
.card.tint-lime { box-shadow: 0 10px 0 #3f6212, 0 18px 28px rgba(0, 0, 0, 0.35); }
.card.tint-blue { box-shadow: 0 10px 0 #1d4ed8, 0 18px 28px rgba(0, 0, 0, 0.35); }

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  margin-bottom: 0.65rem;
  background: rgba(15, 23, 42, 0.55);
}

.status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.status-ok { color: var(--lime); }
.status-warn { color: var(--orange); }

.meta-list {
  display: grid;
  gap: 0.35rem;
  margin: 0.7rem 0 1rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.meta-list strong { color: var(--text); }

.how-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.flow-list { display: grid; gap: 0.8rem; }

.flow-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  padding: 1rem;
  border-radius: 16px;
  background: var(--panel);
  box-shadow: var(--tile-shadow-sm);
}

.flow-num {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 900;
  color: #0f172a;
  background: linear-gradient(145deg, var(--cyan), var(--orange));
  box-shadow: 0 5px 0 #0b1224;
}

.console {
  border-radius: 18px;
  background: #020617;
  overflow: hidden;
  box-shadow: 0 14px 0 #0b1224, 0 24px 36px rgba(0, 0, 0, 0.4);
  transform: rotate(1.5deg);
}

.console-bar {
  display: flex;
  justify-content: space-between;
  padding: 0.7rem 0.95rem;
  background: #111827;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.console pre {
  padding: 1rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: #86efac;
  overflow-x: auto;
}

.console .cmt { color: #64748b; }
.console .k { color: #67e8f9; }
.console .v { color: #fdba74; }

.how-shot {
  margin-top: 0.9rem;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--tile-shadow-sm);
  transform: rotate(-1.5deg);
}

.points {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.point {
  padding: 0.95rem;
  border-radius: 16px;
  background: var(--panel2);
  box-shadow: var(--tile-shadow-sm);
  color: var(--muted);
  font-size: 0.9rem;
}

.point strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.compat-item h3 { font-size: 0.98rem; }
.compat-item p { font-size: 0.88rem; }

.step-index {
  display: inline-block;
  margin-bottom: 0.45rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 900;
  color: #0f172a;
  background: var(--cyan);
  box-shadow: 0 4px 0 #0e7490;
}

.tips {
  margin-top: 1rem;
  padding: 1.1rem 1.2rem;
  border-radius: 18px;
  background: linear-gradient(160deg, #3b2a1d, #2a2118);
  box-shadow: 0 10px 0 #7c2d12, 0 18px 28px rgba(0, 0, 0, 0.35);
}

.tips h3 {
  color: var(--orange);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.tips ul { display: grid; gap: 0.4rem; }
.tips li {
  color: #fdba74;
  font-size: 0.92rem;
  padding-left: 1rem;
  position: relative;
}

.tips li::before {
  content: "!";
  position: absolute;
  left: 0;
  font-weight: 900;
}

.scene-card { min-height: 148px; }

.faq-item details {
  border-radius: var(--radius);
  background: linear-gradient(165deg, #243659, #1a2744);
  box-shadow: var(--tile-shadow-sm);
  padding: 1rem 1.1rem;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--cyan);
  font-weight: 900;
}

.faq-item details[open] summary::after { content: "−"; }
.faq-item details p {
  margin-top: 0.7rem;
  color: var(--muted);
  font-size: 0.94rem;
}

.cta { padding: 3rem 0; }

.cta-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1.9rem 2rem;
  border-radius: 22px;
  background: linear-gradient(135deg, #243659, #1d3258 50%, #2a241f);
  box-shadow: 0 16px 0 #0b1224, 0 28px 40px rgba(0, 0, 0, 0.4);
  transform: rotate(-0.4deg);
}

.cta-box h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 0.35rem;
}

.cta-box p { color: var(--muted); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; }

.page-hero { padding: 2.4rem 0 1rem; }
.page-hero .tile {
  padding: 1.4rem 1.6rem;
  transform: rotate(-0.6deg);
}
.page-hero h1 {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  margin: 0.35rem 0 0.55rem;
}
.page-hero p { color: var(--muted); max-width: 60ch; }

.breadcrumb {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 700;
}
.breadcrumb a { color: var(--cyan); }

.content-block { display: grid; gap: 1rem; }
.content-block .card ol,
.content-block .card ul {
  display: grid;
  gap: 0.45rem;
  padding-left: 1.1rem;
}
.content-block .card ol { list-style: decimal; }
.content-block .card ul { list-style: disc; }
.content-block .card li { color: var(--muted); }

.inline-img {
  margin-top: 1rem;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--tile-shadow);
  transform: rotate(0.8deg);
}

.site-footer {
  padding: 2.4rem 0 1.4rem;
  border-top: 1px solid rgba(96, 165, 250, 0.12);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 1.1rem;
  margin-bottom: 1.3rem;
}

.footer-col h4 {
  font-size: 0.92rem;
  margin-bottom: 0.65rem;
}

.footer-col p,
.footer-col a {
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-col ul { display: grid; gap: 0.4rem; }
.footer-col a:hover { color: var(--cyan); }

.footer-bottom {
  padding-top: 1rem;
  border-top: 1px solid rgba(148, 163, 184, 0.15);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.82rem;
}

@media (max-width: 1024px) {
  .platform-grid { grid-template-columns: repeat(3, 1fr); }
  .compat-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid,
  .scene-grid,
  .faq-grid,
  .reco-grid,
  .download-grid,
  .step-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid,
  .how-grid { grid-template-columns: 1fr; }
  .points { grid-template-columns: 1fr; }
  .tile-stage { min-height: auto; display: grid; gap: 1rem; }
  .tile-a,
  .tile-b { position: static; width: 100%; transform: none; }
}

@media (max-width: 720px) {
  .nav { flex-wrap: wrap; }
  .nav-links { width: 100%; }
  .platform-grid,
  .feature-grid,
  .scene-grid,
  .faq-grid,
  .reco-grid,
  .download-grid,
  .step-grid,
  .compat-grid,
  .footer-grid,
  .trust-row { grid-template-columns: 1fr; }
  .cta-box { padding: 1.3rem; transform: none; }
  .console,
  .how-shot,
  .inline-img,
  .page-hero .tile { transform: none; }
}