:root {
  --bg-color: #0b0914;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.1);
  --border: rgba(255, 255, 255, 0.1);
  --orange: #ff8a00;
  --orange-glow: rgba(255, 138, 0, 0.3);
  --neon-blue: #00e1ff;
  --neon-blue-glow: rgba(0, 225, 255, 0.3);
  --purple-light: #8a2be2;
  --text-main: #f3f4f6;
  --text-sub: #9ca3af;
  --font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --max-w: 1200px;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: -20%; left: -10%;
  width: 50vw; height: 50vw;
  background: radial-gradient(circle, var(--neon-blue-glow) 0%, transparent 60%);
  filter: blur(100px);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  bottom: -20%; right: -10%;
  width: 50vw; height: 50vw;
  background: radial-gradient(circle, var(--orange-glow) 0%, transparent 60%);
  filter: blur(100px);
  z-index: -1;
  pointer-events: none;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img, svg { max-width: 100%; display: block; }

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

/* Nav */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 9, 20, 0.7);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.nav-brand svg { width: 32px; height: 32px; }

.nav-menu {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-sub);
  transition: all 0.3s;
  padding: 8px 12px;
  border-radius: 8px;
}

.nav-link:hover { color: var(--text-main); }
.nav-link.on {
  color: var(--text-main);
  background: var(--surface);
  box-shadow: 0 0 10px var(--neon-blue-glow);
  border: 1px solid var(--border);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: all 0.5s ease;
}

.btn:hover::before { left: 100%; }

.btn-orange {
  background: linear-gradient(135deg, #ff8a00, #ff4e00);
  color: #fff;
  box-shadow: 0 4px 15px var(--orange-glow);
}

.btn-orange:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--orange-glow);
}

.btn-blue {
  background: linear-gradient(135deg, #00e1ff, #0077ff);
  color: #0b0914;
  box-shadow: 0 4px 15px var(--neon-blue-glow);
}

.btn-blue:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--neon-blue-glow);
}

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

.btn-outline:hover {
  background: var(--surface);
  border-color: var(--text-sub);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.1rem;
  border-radius: 16px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.9rem;
  border-radius: 8px;
}

/* Sections */
.sec { padding: 100px 0; }
.sec-alt { background: rgba(0, 0, 0, 0.2); }
.sec-head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.sec-label {
  display: inline-block;
  padding: 4px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--orange);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.sec-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(to right, #fff, #9ca3af);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sec-sub {
  font-size: 1.1rem;
  color: var(--text-sub);
}

/* Hero */
.hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text { z-index: 2; }
.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 24px;
}

.hl-o { color: var(--orange); text-shadow: 0 0 20px var(--orange-glow); }
.hl-b { color: var(--neon-blue); text-shadow: 0 0 20px var(--neon-blue-glow); }

.hero-desc {
  font-size: 1.25rem;
  color: var(--text-sub);
  margin-bottom: 40px;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  z-index: 1;
}

.orb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.orb {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--purple-light), #0b0914);
  box-shadow: 0 0 60px rgba(138, 43, 226, 0.4);
  animation: float 6s ease-in-out infinite;
  position: relative;
}

.orb::after {
  content: '';
  position: absolute;
  top: -10%; left: -10%;
  width: 120%; height: 120%;
  border-radius: 50%;
  border: 1px dashed var(--border);
  animation: rotate 20s linear infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Stats */
.stats-box {
  background: var(--surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 80px;
}

.stat-item { text-align: center; }
.stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}
.stat-lbl {
  color: var(--text-sub);
  font-size: 0.95rem;
}

/* Features */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.feat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.feat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--border);
  transition: all 0.3s;
}

.feat-card:hover {
  transform: translateY(-5px);
  background: var(--surface-hover);
}

.feat-card:hover::before {
  background: var(--neon-blue);
  box-shadow: 0 0 15px var(--neon-blue-glow);
}

.feat-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(0, 225, 255, 0.1);
  color: var(--neon-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.feat-icon svg { width: 32px; height: 32px; }

.feat-name {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feat-desc {
  color: var(--text-sub);
  line-height: 1.6;
}

/* Platforms */
.plat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.plat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
}

.plat-card.featured {
  background: linear-gradient(180deg, rgba(255, 138, 0, 0.1), var(--surface));
  border-color: rgba(255, 138, 0, 0.3);
}

.plat-card:hover {
  background: var(--surface-hover);
  border-color: var(--text-sub);
}

.plat-ico {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  color: var(--text-main);
}

.plat-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.plat-ver {
  font-size: 0.9rem;
  color: var(--text-sub);
  margin-bottom: 20px;
}

/* Deep Features */
.deep-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 100px;
}

.deep-row:last-child { margin-bottom: 0; }
.deep-row.rev { direction: rtl; }
.deep-row.rev > * { direction: ltr; }

.deep-info { max-width: 500px; }
.deep-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.deep-desc {
  color: var(--text-sub);
  font-size: 1.1rem;
  margin-bottom: 30px;
}

.deep-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.dl-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.dl-icon {
  color: var(--orange);
  margin-top: 2px;
}
.dl-icon svg { width: 20px; height: 20px; }

.dl-text { color: var(--text-main); font-weight: 500; }

.deep-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

/* Reviews */
.rev-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.rev-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
}

.rev-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.rev-avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  color: #fff;
}

.av-1 { background: #ff8a00; }
.av-2 { background: #00e1ff; color: #000; }
.av-3 { background: #8a2be2; }
.av-4 { background: #e11d48; }
.av-5 { background: #16a34a; }
.av-6 { background: #ea580c; }

.rev-name {
  font-weight: 700;
  font-size: 1.05rem;
}

.rev-stars {
  color: #fbbf24;
  font-size: 0.9rem;
  margin-top: 4px;
}

.rev-text {
  color: var(--text-sub);
  font-size: 0.95rem;
  font-style: italic;
}

/* Comparison */
.cmp-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  overflow-x: auto;
}

.cmp-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
}

.cmp-table th, .cmp-table td {
  padding: 20px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.cmp-table th:first-child, .cmp-table td:first-child {
  text-align: left;
  font-weight: 700;
}

.cmp-table th {
  background: rgba(0,0,0,0.3);
  font-size: 1.1rem;
}

.cmp-table .hl {
  background: rgba(0, 225, 255, 0.05);
  color: var(--neon-blue);
  font-weight: 700;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.faq-q {
  padding: 24px;
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.faq-chevron {
  transition: transform 0.3s;
  color: var(--text-sub);
}
.faq-chevron svg { width: 24px; height: 24px; }

.faq-item.open .faq-chevron { transform: rotate(180deg); color: var(--neon-blue); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-a { max-height: 500px; }

.faq-a-inner {
  padding: 0 24px 24px;
  color: var(--text-sub);
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, rgba(138, 43, 226, 0.2), rgba(0, 225, 255, 0.1));
  border: 1px solid var(--border);
  border-radius: 32px;
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.cta-title { font-size: 2.5rem; font-weight: 800; margin-bottom: 16px; position: relative; z-index: 1;}
.cta-desc { font-size: 1.1rem; color: var(--text-sub); margin-bottom: 32px; position: relative; z-index: 1;}

/* Download Page */
.dl-hero {
  padding: 100px 0 60px;
  text-align: center;
}

.dl-main-box {
  background: linear-gradient(180deg, rgba(255, 138, 0, 0.1), var(--surface));
  border: 1px solid rgba(255, 138, 0, 0.3);
  border-radius: 32px;
  padding: 60px 40px;
  max-width: 800px;
  margin: 0 auto 60px;
  position: relative;
  overflow: hidden;
}

.dl-main-icon {
  width: 80px; height: 80px; margin: 0 auto 24px; color: var(--text-main);
}
.dl-main-icon svg { width: 100%; height: 100%; }

.dl-meta {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.dl-meta-item {
  text-align: center;
}
.dl-meta-lbl { font-size: 0.85rem; color: var(--text-sub); }
.dl-meta-val { font-weight: 600; font-size: 1.1rem; }

.steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.step-col {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
}

.step-col-title {
  font-size: 1.5rem; font-weight: 700; margin-bottom: 30px;
  display: flex; align-items: center; gap: 12px;
}

.step-list {
  display: flex; flex-direction: column; gap: 24px;
}

.step-item {
  display: flex; gap: 16px;
}

.step-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(0, 225, 255, 0.1);
  color: var(--neon-blue);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; flex-shrink: 0;
}

.step-text h4 { font-size: 1.1rem; margin-bottom: 4px; }
.step-text p { color: var(--text-sub); font-size: 0.95rem; }

.req-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}

.req-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
}

.req-card svg { width: 32px; height: 32px; margin: 0 auto 16px; color: var(--neon-blue); }
.req-card h4 { margin-bottom: 8px; }
.req-card p { color: var(--text-sub); font-size: 0.9rem; }

.ver-list {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
}

.ver-item {
  position: relative;
  padding-left: 40px;
  padding-bottom: 30px;
  border-left: 2px solid var(--border);
}
.ver-item:last-child { border-left-color: transparent; padding-bottom: 0; }

.ver-dot {
  position: absolute; left: -9px; top: 0;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--neon-blue);
  box-shadow: 0 0 10px var(--neon-blue-glow);
}

.ver-head { display: flex; align-items: center; gap: 16px; margin-bottom: 8px; }
.ver-num { font-size: 1.2rem; font-weight: 700; }
.ver-date { color: var(--text-sub); font-size: 0.9rem; }
.ver-tag {
  padding: 2px 8px; border-radius: 12px; font-size: 0.8rem; font-weight: 600;
  background: rgba(255, 138, 0, 0.1); color: var(--orange);
}

.sec-banner {
  background: rgba(22, 163, 74, 0.1);
  border: 1px solid rgba(22, 163, 74, 0.3);
  border-radius: 16px;
  padding: 24px;
  display: flex; align-items: center; gap: 20px;
  margin-top: 40px;
}

.sec-banner svg { width: 48px; height: 48px; color: #16a34a; flex-shrink: 0; }
.sec-banner h4 { color: #22c55e; font-size: 1.1rem; margin-bottom: 4px; }
.sec-banner p { color: var(--text-sub); font-size: 0.95rem; }

/* Article */
.art-hero { padding: 80px 0 40px; text-align: center; border-bottom: 1px solid var(--border); }
.tag-cloud { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-bottom: 24px; }
.tag {
  padding: 6px 16px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; font-size: 0.9rem; color: var(--text-sub);
}

.art-layout {
  display: grid; grid-template-columns: 1fr 300px; gap: 40px;
  padding: 60px 0;
}

.art-body h2 { font-size: 1.8rem; margin: 40px 0 20px; color: var(--text-main); }
.art-body h3 { font-size: 1.4rem; margin: 30px 0 16px; }
.art-body p { margin-bottom: 16px; font-size: 1.05rem; color: var(--text-sub); }
.art-body ul { margin-bottom: 20px; padding-left: 20px; }
.art-body li { margin-bottom: 10px; color: var(--text-sub); position: relative; }
.art-body li::before {
  content: '•'; color: var(--neon-blue); position: absolute; left: -15px; font-weight: bold;
}

.inline-cta {
  margin: 40px 0; padding: 30px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; text-align: center;
}

.sidebar { position: sticky; top: 100px; }
.sbox {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 24px; margin-bottom: 24px;
}
.sbox h4 { margin-bottom: 16px; font-size: 1.1rem; border-bottom: 1px solid var(--border); padding-bottom: 12px; }
.sdl-btns { display: flex; flex-direction: column; gap: 12px; }
.sbox-link { display: block; color: var(--text-sub); margin-bottom: 12px; font-size: 0.95rem; }
.sbox-link:hover { color: var(--neon-blue); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
  text-align: center;
  background: rgba(0,0,0,0.5);
}

.security-line {
  display: inline-flex; align-items: center; gap: 8px;
  color: #16a34a; font-weight: 600; margin-bottom: 20px;
  background: rgba(22, 163, 74, 0.1); padding: 8px 20px; border-radius: 20px;
}

.footer-note { color: var(--text-sub); font-size: 0.9rem; }

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner, .art-layout { grid-template-columns: 1fr; }
  .stats-box { grid-template-columns: repeat(2, 1fr); }
  .feat-grid, .deep-row { grid-template-columns: 1fr; }
  .plat-grid, .req-grid { grid-template-columns: repeat(2, 1fr); }
  .rev-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-menu { display: none; }
  .hero-title { font-size: 2.5rem; }
  .sec { padding: 60px 0; }
  .plat-grid, .req-grid { grid-template-columns: 1fr; }
}