/* ============================================================
   Zalo-3.com — "Zalo Xanh Lá / Green Connect" Theme
   Primary: #00C48C (emerald green) | Accent: #FFD600 (gold)
   Dark navy bg: #07111F | White cards: #FFFFFF
   ============================================================ */

:root {
  --primary: #00C48C;
  --primary-dark: #009E71;
  --primary-light: #D0F7EC;
  --accent: #FFD600;
  --dark: #07111F;
  --dark2: #0D1B2E;
  --dark3: #13263D;
  --text: #1A2636;
  --text-muted: #5A6A7E;
  --text-light: #8D9DB0;
  --border: #E2EAF4;
  --bg: #F4F8FF;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,196,140,0.10);
  --shadow-md: 0 8px 40px rgba(7,17,31,0.12);
  --shadow-lg: 0 20px 60px rgba(7,17,31,0.18);
  --transition: 0.25s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ── Keyframes ── */
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.6; } }
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ════════════════════════════════════════════════
   TOP ANNOUNCEMENT BAR
   ════════════════════════════════════════════════ */
.top-bar {
  background: linear-gradient(90deg, var(--dark), var(--dark2), var(--dark3), var(--dark2));
  background-size: 200% 100%;
  animation: gradientShift 6s ease infinite;
  color: var(--white);
  font-size: 0.8rem;
  padding: 8px 0;
  overflow: hidden;
}
.top-bar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 24px;
  white-space: nowrap;
  overflow: hidden;
}
.top-bar-ticker {
  display: inline-flex;
  gap: 60px;
  animation: ticker 28s linear infinite;
}
.top-bar-ticker span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.top-bar-dot {
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}

/* ════════════════════════════════════════════════
   NAVIGATION
   ════════════════════════════════════════════════ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--primary);
  box-shadow: 0 2px 20px rgba(0,196,140,0.10);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--dark);
  letter-spacing: -0.5px;
}
.nav-logo-icon {
  width: 36px; height: 36px;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition);
}
.nav-links a:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.nav-links a.active {
  background: var(--primary);
  color: var(--white);
  font-weight: 700;
}
.nav-cta {
  background: var(--dark);
  color: var(--white) !important;
  padding: 9px 20px !important;
  border-radius: 8px !important;
  font-weight: 700 !important;
  font-size: 0.88rem !important;
  transition: all var(--transition) !important;
}
.nav-cta:hover {
  background: var(--primary) !important;
  color: var(--white) !important;
  transform: translateY(-1px);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--dark);
  cursor: pointer;
  padding: 4px;
}

/* ════════════════════════════════════════════════
   HERO — index.html (Cinematic Dark Hero)
   ════════════════════════════════════════════════ */
.hero {
  background: linear-gradient(135deg, var(--dark) 0%, #0D2140 50%, #072A1F 100%);
  color: var(--white);
  padding: 90px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -100px; right: -150px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,196,140,0.18) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -80px; left: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,214,0,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,196,140,0.15);
  border: 1px solid rgba(0,196,140,0.35);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.hero-badge-dot {
  width: 7px; height: 7px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 1.4s ease-in-out infinite;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 22px;
  letter-spacing: -1.5px;
}
.hero h1 em {
  font-style: normal;
  color: var(--primary);
}
.hero h1 .accent-gold { color: var(--accent); }
.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-stats {
  display: flex;
  gap: 28px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
  line-height: 1;
}
.hero-stat-label {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.55);
  margin-top: 3px;
  white-space: nowrap;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all var(--transition);
  box-shadow: 0 6px 24px rgba(0,196,140,0.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(0,196,140,0.45);
}
.btn-primary:disabled {
  opacity: 0.75;
  cursor: not-allowed;
  transform: none;
}
.btn-secondary {
  background: rgba(255,255,255,0.1);
  color: var(--white);
  padding: 14px 24px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.2);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.35);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  padding: 12px 22px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}
.btn-dark {
  background: var(--dark);
  color: var(--white);
  padding: 13px 24px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all var(--transition);
}
.btn-dark:hover {
  background: var(--dark3);
  transform: translateY(-1px);
}
.btn-dark:disabled {
  opacity: 0.75;
  cursor: not-allowed;
  transform: none;
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  border: 1.5px solid var(--border);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Hero Visual — Phone Mockup + Chat UI */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: float 4s ease-in-out infinite;
}
.phone-mockup {
  width: 260px;
  background: #1A2636;
  border-radius: 36px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5), 0 0 0 2px rgba(0,196,140,0.3);
  overflow: hidden;
  border: 2px solid rgba(255,255,255,0.08);
  position: relative;
}
.phone-status {
  background: #111B2A;
  padding: 10px 18px 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.65rem;
  color: rgba(255,255,255,0.5);
}
.phone-header {
  background: var(--primary);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
}
.phone-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}
.phone-contact-name { font-weight: 700; font-size: 0.85rem; }
.phone-contact-status { font-size: 0.65rem; opacity: 0.8; }
.phone-chat {
  background: #0F1C2D;
  padding: 14px;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chat-bubble {
  max-width: 78%;
  padding: 9px 13px;
  border-radius: 14px;
  font-size: 0.72rem;
  line-height: 1.45;
  position: relative;
}
.chat-bubble.them {
  background: #1E2D40;
  color: rgba(255,255,255,0.88);
  border-bottom-left-radius: 4px;
  align-self: flex-start;
}
.chat-bubble.me {
  background: var(--primary);
  color: var(--white);
  border-bottom-right-radius: 4px;
  align-self: flex-end;
}
.chat-bubble.sticker {
  background: transparent;
  padding: 4px;
  font-size: 2rem;
  text-align: center;
}
.chat-time {
  display: block;
  font-size: 0.58rem;
  opacity: 0.55;
  margin-top: 3px;
  text-align: right;
}
.phone-input-bar {
  background: #111B2A;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.phone-input-mock {
  flex: 1;
  background: #1E2D40;
  border-radius: 20px;
  padding: 7px 12px;
  font-size: 0.68rem;
  color: rgba(255,255,255,0.35);
}
.phone-send-btn {
  width: 30px; height: 30px;
  background: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}

/* ════════════════════════════════════════════════
   LAYOUT CONTAINERS
   ════════════════════════════════════════════════ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section-sm { padding: 56px 0; }
.section-lg { padding: 100px 0; }

.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header .label {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-header h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}
.section-header p {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* dark section header */
.section-dark .section-header .label {
  background: rgba(0,196,140,0.2);
  color: var(--primary);
}
.section-dark .section-header h2 { color: var(--white); }
.section-dark .section-header p { color: rgba(255,255,255,0.6); }

/* ════════════════════════════════════════════════
   FEATURE CARDS GRID
   ════════════════════════════════════════════════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.feature-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 52px; height: 52px;
  background: var(--primary-light);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  transition: background var(--transition);
}
.feature-card:hover .feature-icon {
  background: var(--primary);
}
.feature-card:hover .feature-icon svg { color: var(--white) !important; }
.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ════════════════════════════════════════════════
   STATS STRIP
   ════════════════════════════════════════════════ */
.stats-strip {
  background: var(--dark);
  padding: 48px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {}
.stat-number {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  letter-spacing: -1px;
}
.stat-unit {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}
.stat-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  margin-top: 6px;
  line-height: 1.4;
}

/* ════════════════════════════════════════════════
   PLATFORM DOWNLOAD
   ════════════════════════════════════════════════ */
.platform-section { background: var(--bg); }
.platforms-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 20px;
}
.platform-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  transition: all var(--transition);
}
.platform-card.featured {
  background: var(--dark);
  border-color: var(--primary);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.platform-card.featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.platform-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.platform-icon-wrap {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
  background: var(--primary-light);
}
.platform-card.featured .platform-icon-wrap {
  background: rgba(0,196,140,0.2);
}
.platform-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.platform-card.featured h3 { color: var(--white); }
.platform-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.5;
}
.platform-card.featured .platform-desc { color: rgba(255,255,255,0.6); }
.platform-version {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-bottom: 18px;
}
.platform-card.featured .platform-version { color: rgba(255,255,255,0.4); }

/* ════════════════════════════════════════════════
   DEEP FEATURE ROWS (Alternating)
   ════════════════════════════════════════════════ */
.deep-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}
.deep-feature:last-child { border-bottom: none; }
.deep-feature.reverse .deep-content { order: 2; }
.deep-feature.reverse .deep-visual { order: 1; }
.deep-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.deep-content h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 14px;
  line-height: 1.3;
  letter-spacing: -0.5px;
}
.deep-content p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 14px;
}
.deep-content .feature-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}
.deep-content .feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text);
}
.deep-content .feature-list li::before {
  content: '';
  width: 18px; height: 18px;
  min-width: 18px;
  background: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 20 20' fill='white' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-size: 11px;
  background-repeat: no-repeat;
  background-position: center;
  margin-top: 2px;
}
.deep-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg);
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--border);
}

/* Feature Panel SVG-based */
.feature-panel {
  width: 100%;
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 24px;
  color: var(--white);
}
.panel-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.panel-title { font-size: 0.85rem; font-weight: 700; }
.panel-dot { width: 8px; height: 8px; border-radius: 50%; }
.panel-dot.green { background: #00C48C; }
.panel-dot.yellow { background: #FFD600; }
.panel-dot.red { background: #FF6B6B; }
.panel-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 0.8rem;
}
.panel-row:last-child { border-bottom: none; }
.panel-row-label { color: rgba(255,255,255,0.55); }
.panel-row-val {
  font-weight: 700;
  color: var(--primary);
}
.panel-bar-wrap {
  flex: 1;
  margin: 0 16px;
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 3px;
  overflow: hidden;
}
.panel-bar {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

/* ════════════════════════════════════════════════
   REVIEWS
   ════════════════════════════════════════════════ */
.reviews-section { background: var(--bg); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.review-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  transition: all var(--transition);
}
.review-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
  transform: translateY(-3px);
}
.review-stars {
  display: flex;
  gap: 3px;
  margin-bottom: 14px;
}
.review-stars svg { color: var(--accent); }
.review-text {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 18px;
  font-style: italic;
}
.review-text::before { content: '"'; font-size: 1.8rem; color: var(--primary); line-height: 0.5; vertical-align: -8px; margin-right: 4px; }
.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.review-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  flex-shrink: 0;
}
.review-name { font-weight: 700; font-size: 0.88rem; color: var(--dark); }
.review-role { font-size: 0.75rem; color: var(--text-light); }
.review-tag {
  margin-left: auto;
  font-size: 0.7rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 3px 8px;
  border-radius: 999px;
  font-weight: 600;
}

/* ════════════════════════════════════════════════
   COMPARISON TABLE
   ════════════════════════════════════════════════ */
.comparison-section { background: var(--dark); padding: 80px 0; }
.comparison-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: #0D1B2E;
  font-size: 0.88rem;
}
.comparison-table th, .comparison-table td {
  padding: 14px 18px;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.comparison-table th {
  background: #0A1525;
  color: rgba(255,255,255,0.5);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.comparison-table th.highlight {
  background: var(--primary);
  color: var(--white);
}
.comparison-table td { color: rgba(255,255,255,0.7); }
.comparison-table td.feature-name {
  text-align: left;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
}
.comparison-table td.highlight {
  background: rgba(0,196,140,0.08);
  color: var(--primary);
  font-weight: 700;
}
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tr:hover td { background: rgba(255,255,255,0.03); }
.check { color: var(--primary); font-size: 1.1rem; }
.cross { color: #ff6b6b; font-size: 1.1rem; }
.partial { color: var(--accent); font-size: 1.1rem; }

/* ════════════════════════════════════════════════
   FAQ
   ════════════════════════════════════════════════ */
.faq-section { background: var(--white); }
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.faq-item {
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-item.open { border-color: var(--primary); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--dark);
  cursor: pointer;
  user-select: none;
  gap: 12px;
  background: var(--white);
  transition: background var(--transition);
}
.faq-item.open .faq-question {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.faq-chevron {
  width: 22px; height: 22px;
  min-width: 22px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  border-radius: 50%;
  transition: transform var(--transition), background var(--transition);
}
.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  background: var(--primary);
  color: var(--white);
}
.faq-answer {
  display: none;
  padding: 0 20px 18px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.75;
  background: var(--white);
}
.faq-item.open .faq-answer { display: block; }

/* ════════════════════════════════════════════════
   CTA BANNER
   ════════════════════════════════════════════════ */
.cta-banner {
  background: linear-gradient(135deg, var(--dark) 0%, #0D2140 60%, #072A1F 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(0,196,140,0.15) 0%, transparent 65%);
  pointer-events: none;
}
.cta-banner h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
  position: relative;
}
.cta-banner p {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 36px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  position: relative;
}
.cta-banner .btn-primary { font-size: 1.05rem; padding: 16px 32px; position: relative; }

/* ════════════════════════════════════════════════
   DOWNLOAD PAGE SPECIFIC
   ════════════════════════════════════════════════ */
.dl-hero {
  background: linear-gradient(135deg, var(--dark) 0%, #0D2140 100%);
  padding: 60px 0 50px;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.dl-hero::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 500px; height: 100%;
  background: radial-gradient(ellipse at right, rgba(0,196,140,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.dl-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}
.dl-hero h1 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 10px;
}
.dl-hero p {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 0;
}

.win-hero-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1.5px solid var(--border);
  margin-bottom: 32px;
}
.win-hero-left {
  background: var(--dark);
  padding: 40px 36px;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.win-hero-left::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.win-hero-left h2 {
  font-size: 1.7rem;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}
.win-hero-left .sub {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 24px;
  line-height: 1.6;
}
.win-info-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
}
.win-info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
}
.win-info-item svg { color: var(--primary); flex-shrink: 0; }
.win-hero-right {
  padding: 36px;
  background: var(--bg);
}
.win-hero-right h3 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table tr:nth-child(even) td { background: var(--white); }
.spec-table td {
  padding: 10px 12px;
  font-size: 0.82rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.spec-table td:first-child {
  color: var(--text-muted);
  font-weight: 600;
  width: 42%;
}
.spec-table tr:last-child td { border-bottom: none; }

.other-platforms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}
.other-platform-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
}
.other-platform-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
  transform: translateY(-3px);
}
.other-platform-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.other-platform-card .desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
}
.other-platform-card .reqs {
  font-size: 0.78rem;
  color: var(--text-light);
  margin-bottom: 18px;
  line-height: 1.5;
}
.install-steps {
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}
.install-step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  counter-increment: step;
}
.install-step::before {
  content: counter(step);
  min-width: 20px; height: 20px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.65rem;
  font-weight: 800;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-top: 1px;
}

/* Windows Install Timeline */
.install-timeline {
  position: relative;
  padding-left: 36px;
}
.install-timeline::before {
  content: '';
  position: absolute;
  left: 12px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
}
.timeline-step {
  position: relative;
  margin-bottom: 36px;
  padding: 22px 24px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.timeline-step:hover { border-color: var(--primary); }
.timeline-step::before {
  content: attr(data-step);
  position: absolute;
  left: -48px;
  top: 18px;
  width: 26px; height: 26px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 800;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--primary);
}
.timeline-step h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.timeline-step p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.timeline-step .step-tip {
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

/* System Requirements Tabs */
.tabs-nav {
  display: flex;
  gap: 4px;
  background: var(--bg);
  padding: 5px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  width: fit-content;
}
.tab-btn {
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  background: none;
  border: none;
}
.tab-btn.active {
  background: var(--white);
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.tab-content { display: none; }
.tab-content.active { display: block; }
.req-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.req-table th {
  text-align: left;
  padding: 12px 16px;
  background: var(--bg);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.req-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.req-table tr:last-child td { border-bottom: none; }
.req-table td:first-child { font-weight: 600; color: var(--text-muted); width: 40%; }

/* Version changelog */
.changelog {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.changelog-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.changelog-item:last-child { border-bottom: none; }
.changelog-version {
  text-align: right;
}
.changelog-ver {
  display: inline-block;
  background: var(--primary);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 4px;
  white-space: nowrap;
}
.changelog-date {
  font-size: 0.72rem;
  color: var(--text-light);
  white-space: nowrap;
}
.changelog-content h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.changelog-content ul {
  list-style: disc;
  padding-left: 18px;
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.65;
}
.changelog-content ul li { margin-bottom: 3px; }

/* Safety banner */
.safety-banner {
  background: linear-gradient(90deg, rgba(0,196,140,0.1), rgba(0,196,140,0.05));
  border: 1.5px solid rgba(0,196,140,0.25);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.safety-icon {
  width: 56px; height: 56px;
  min-width: 56px;
  background: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
}
.safety-banner h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.safety-banner p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ════════════════════════════════════════════════
   VI.HTML — Article Layout
   ════════════════════════════════════════════════ */
.article-hero {
  background: linear-gradient(135deg, #034032 0%, #0D2140 50%, var(--dark) 100%);
  padding: 64px 0 52px;
  color: var(--white);
}
.article-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--primary); }
.breadcrumb span { color: rgba(255,255,255,0.3); }
.article-hero h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
  max-width: 700px;
}
.article-hero .article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  flex-wrap: wrap;
}
.article-hero .article-meta span {
  display: flex;
  align-items: center;
  gap: 5px;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.tag {
  background: rgba(0,196,140,0.15);
  border: 1px solid rgba(0,196,140,0.3);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.article-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}
.article-body {}
.article-section {
  margin-bottom: 52px;
}
.article-section h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
  letter-spacing: -0.3px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
}
.article-section h2 em {
  font-style: normal;
  color: var(--primary);
}
.article-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin: 22px 0 10px;
}
.article-section p {
  font-size: 0.92rem;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 14px;
}
.article-section ul, .article-section ol {
  padding-left: 22px;
  margin-bottom: 14px;
}
.article-section ul { list-style: disc; }
.article-section ol { list-style: decimal; }
.article-section li {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.75;
  margin-bottom: 6px;
}
.article-section a { color: var(--primary); text-decoration: underline; }
.article-section strong { color: var(--dark); }

.info-box {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.7;
}
.info-box strong { color: var(--primary-dark); }
.warning-box {
  background: #FFF8E1;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.7;
}

/* TOC Sidebar */
.article-sidebar {
  position: sticky;
  top: 80px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.toc-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
}
.toc-card h4 {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.toc-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.toc-list a {
  display: block;
  padding: 7px 10px;
  border-radius: 7px;
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: all var(--transition);
  line-height: 1.4;
}
.toc-list a:hover, .toc-list a.active {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
}
.download-sidebar-card {
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  color: var(--white);
  text-align: center;
}
.download-sidebar-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.download-sidebar-card p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 18px;
  line-height: 1.5;
}
.download-sidebar-card .btn-primary {
  width: 100%;
  justify-content: center;
  font-size: 0.9rem;
}

/* Tips Grid */
.tips-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}
.tip-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 16px;
  border: 1.5px solid var(--border);
  transition: border-color var(--transition);
}
.tip-card:hover { border-color: var(--primary); }
.tip-card .tip-num {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 6px;
  line-height: 1;
}
.tip-card h4 { font-size: 0.85rem; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.tip-card p { font-size: 0.78rem; color: var(--text-muted); line-height: 1.55; }

/* CTA Box */
.article-cta {
  background: linear-gradient(135deg, var(--dark), #0D2140);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  color: var(--white);
  text-align: center;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}
.article-cta::before {
  content: '';
  position: absolute;
  top: -30%; left: 50%;
  transform: translateX(-50%);
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,196,140,0.15) 0%, transparent 65%);
  pointer-events: none;
}
.article-cta h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 10px;
  position: relative;
}
.article-cta p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 26px;
  position: relative;
}
.article-cta a.btn-primary {
  display: inline-flex;
  font-size: 1rem;
  padding: 14px 30px;
  position: relative;
}

/* Comparison table in article */
.article-section .comparison-table-wrap {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow-x: auto;
}
.article-section .comparison-table {
  font-size: 0.82rem;
}
.article-section .comparison-table th,
.article-section .comparison-table td {
  padding: 11px 14px;
}

/* ════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════ */
.footer {
  background: var(--dark);
  padding: 60px 0 0;
  color: rgba(255,255,255,0.6);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .nav-logo { margin-bottom: 14px; color: var(--white); }
.footer-brand p {
  font-size: 0.84rem;
  line-height: 1.7;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 14px;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  font-size: 0.84rem;
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.78rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.4);
}
.footer-safety {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.6;
  padding: 16px 0 0;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* ════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero-inner { gap: 40px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hero { padding: 60px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .phone-mockup { width: 220px; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .platforms-grid { grid-template-columns: 1fr 1fr; }
  .platforms-grid .platform-card.featured { grid-column: 1 / -1; }
  .deep-feature { grid-template-columns: 1fr; gap: 32px; }
  .deep-feature.reverse .deep-content { order: 1; }
  .deep-feature.reverse .deep-visual { order: 2; }
  .reviews-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .win-hero-card { grid-template-columns: 1fr; }
  .other-platforms-grid { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .tips-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
    gap: 4px;
    box-shadow: var(--shadow-md);
  }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .platforms-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 16px; }
  .footer-top { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════
   DOWNLOAD PAGE — dl-hero
   ════════════════════════════════════════════════ */
.dl-hero {
  background: linear-gradient(135deg, var(--dark) 0%, #0A1E34 50%, #0D2A3E 100%);
  padding: 72px 0 60px;
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.dl-hero::before {
  content: '';
  position: absolute;
  top: -60px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,196,140,0.12) 0%, transparent 65%);
  pointer-events: none;
}
.dl-hero-inner {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}
.dl-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,196,140,0.15);
  border: 1px solid rgba(0,196,140,0.3);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.dl-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -1px;
}
.dl-hero p {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 28px;
  line-height: 1.7;
}
.dl-hero-meta {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.dl-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.7);
  font-size: 0.78rem;
  padding: 6px 14px;
  border-radius: 999px;
}

/* ── Windows Featured Card ── */
.win-featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0,196,140,0.2);
}
.win-featured-left {
  background: linear-gradient(160deg, #0D2A3E, #0A1820);
  padding: 40px;
  color: var(--white);
}
.win-featured-right {
  background: rgba(255,255,255,0.03);
  border-left: 1px solid rgba(0,196,140,0.15);
  padding: 40px;
}
.win-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0,196,140,0.15);
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.win-icon { margin-bottom: 16px; }
.win-featured-left h2 {
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}
.win-desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  margin-bottom: 22px;
}
.win-file-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 24px;
}
.win-info-item { display: flex; flex-direction: column; gap: 2px; }
.win-info-label {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.win-info-val {
  font-size: 0.88rem;
  color: var(--white);
  font-weight: 700;
}
.btn-large {
  font-size: 1.05rem !important;
  padding: 16px 28px !important;
}
.win-safety-note {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  margin-top: 12px;
}
.win-feat-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.win-feat-item:last-child { border-bottom: none; }
.win-feat-icon {
  width: 36px; height: 36px;
  background: rgba(0,196,140,0.12);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.win-feat-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 2px;
}
.win-feat-desc {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.5;
}

/* ── Other Platforms Grid ── */
.other-platforms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.other-platform-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
}
.other-platform-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.op-icon {
  width: 56px; height: 56px;
  background: var(--bg);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.other-platform-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}
.op-version-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--primary-dark);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.other-platform-card p {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}
.op-specs {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}
.op-specs li {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  font-size: 0.8rem;
  color: var(--text);
  line-height: 1.5;
}
.op-specs li svg { flex-shrink: 0; margin-top: 3px; }
.op-btn {
  width: 100%;
  justify-content: center;
  font-size: 0.85rem;
}

/* ── Tabs ── */
.tabs-wrap {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.tabs {
  display: flex;
  border-bottom: 1.5px solid var(--border);
  background: var(--bg);
}
.tab {
  flex: 1;
  padding: 14px 12px;
  font-size: 0.87rem;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}
.tab.active {
  color: var(--primary-dark);
  background: var(--white);
  border-bottom-color: var(--primary);
}
.tab-content { padding: 0; }
.tab-content.hidden { display: none; }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}
.spec-table thead tr { background: var(--bg); }
.spec-table th {
  padding: 12px 18px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: left;
  border-bottom: 1.5px solid var(--border);
}
.spec-table td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  line-height: 1.5;
}
.spec-table td:first-child { font-weight: 600; color: var(--dark); }
.spec-table td:last-child { color: var(--primary-dark); font-weight: 600; }
.spec-table tbody tr:last-child td { border-bottom: none; }
.spec-table tbody tr:hover { background: var(--bg); }

/* ── Install Steps ── */
.install-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}
.install-steps::before {
  content: '';
  position: absolute;
  left: 24px; top: 40px; bottom: 40px;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), transparent);
}
.install-step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.install-step:last-child { border-bottom: none; }
.step-number {
  width: 48px; height: 48px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 0 4px var(--primary-light);
}
.step-content h4 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}
.step-content p {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── macOS Install Grid ── */
.mac-install-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.mac-install-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.mac-install-card h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.mac-install-card ol {
  padding-left: 20px;
  list-style: decimal;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.mac-install-card li {
  font-size: 0.86rem;
  color: var(--text);
  line-height: 1.65;
}
.mac-install-card strong { color: var(--dark); }

/* ── Changelog ── */
.changelog-section {
  background: linear-gradient(180deg, #07111F 0%, #0D1B2E 100%);
  color: var(--white);
}
.changelog-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.changelog-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  transition: border-color var(--transition);
}
.changelog-item:hover { border-color: rgba(0,196,140,0.3); }
.changelog-version {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.cl-ver {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--primary);
}
.cl-date {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}
.cl-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.5);
}
.cl-tag.new {
  background: rgba(0,196,140,0.15);
  border-color: rgba(0,196,140,0.4);
  color: var(--primary);
}
.cl-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 16px;
  list-style: disc;
}
.cl-items li {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.5;
}

/* ── Safety Banner ── */
.safety-banner {
  background: var(--bg);
  padding: 60px 0;
  border-top: 1px solid var(--border);
}
.safety-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 28px;
  background: var(--white);
  border: 2px solid var(--primary-light);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
}
.safety-icon {
  width: 70px; height: 70px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.safety-content { flex: 1; }
.safety-content h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}
.safety-content p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}
.safety-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.safety-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-dark);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ════════════════════════════════════════════════
   vi.html — Article page specific
   ════════════════════════════════════════════════ */
.article-hero {
  background: linear-gradient(135deg, #07111F 0%, #0A1E34 60%, #0D2840 100%);
  padding: 72px 0 56px;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute;
  bottom: -100px; right: 10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,196,140,0.1) 0%, transparent 65%);
  pointer-events: none;
}
.article-hero-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}
.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
  margin-bottom: 20px;
}
.article-breadcrumb a { color: var(--primary); }
.article-hero h1 {
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.article-lead {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.75;
  margin-bottom: 24px;
  max-width: 720px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

/* ── Article layout (TOC + content) ── */
.article-wrap {
  background: var(--white);
  padding: 0;
}
.article-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 56px;
  align-items: start;
}
.article-toc { order: 2; }
.toc-sticky {
  position: sticky;
  top: 88px;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.toc-title {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.toc-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 20px;
}
.toc-list a {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 7px 10px;
  border-radius: 7px;
  transition: all var(--transition);
  line-height: 1.45;
}
.toc-list a:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
}
.toc-cta { padding-top: 16px; border-top: 1px solid var(--border); }

/* ── Article content ── */
.article-content { order: 1; }
.article-content section {
  margin-bottom: 60px;
}
.article-content h2 {
  font-size: 1.55rem;
  font-weight: 900;
  color: var(--dark);
  margin-bottom: 18px;
  letter-spacing: -0.3px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
}
.article-content h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--dark);
  margin: 24px 0 10px;
}
.article-content p {
  font-size: 0.92rem;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 14px;
}
.article-content strong { color: var(--dark); }
.article-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}
.article-list li {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
}
.article-list li::before {
  content: '▸';
  color: var(--primary);
  position: absolute;
  left: 0;
  top: 1px;
}
.article-highlight {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 22px;
  margin: 24px 0;
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.7;
}
.highlight-icon { flex-shrink: 0; margin-top: 2px; }

/* ── Timeline strip ── */
.timeline-strip {
  display: flex;
  gap: 0;
  overflow-x: auto;
  padding: 10px 0;
  margin: 24px 0;
  border-radius: var(--radius);
  background: var(--bg);
  border: 1.5px solid var(--border);
}
.timeline-item {
  flex: 1;
  min-width: 120px;
  padding: 16px 14px;
  border-right: 1px solid var(--border);
  text-align: center;
}
.timeline-item:last-child { border-right: none; }
.tl-year {
  display: block;
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 6px;
}
.tl-event {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* ── Comparison mini ── */
.comparison-mini {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 20px 0;
}
.cmp-item {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.cmp-item h4 {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}
.cmp-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 8px;
}
.cmp-item p:last-child { margin-bottom: 0; }

/* ── Article CTA Box ── */
.article-cta-box {
  background: linear-gradient(135deg, var(--dark) 0%, #0D2140 100%);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  color: var(--white);
  text-align: center;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}
.article-cta-box::before {
  content: '';
  position: absolute;
  top: -40px; left: 50%;
  transform: translateX(-50%);
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,196,140,0.14) 0%, transparent 65%);
  pointer-events: none;
}
.article-cta-box h3 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 12px;
  position: relative;
}
.article-cta-box p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
  position: relative;
  margin-bottom: 0;
}

/* ── Keyword section ── */
.keyword-section {
  background: var(--bg);
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.keyword-section .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.keyword-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.keyword-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.kw-tag {
  background: var(--white);
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 4px 12px;
  border-radius: 999px;
  transition: all var(--transition);
}
.kw-tag:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

/* ════════════════════════════════════════════════
   ADDITIONAL RESPONSIVE
   ════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .win-featured-card { grid-template-columns: 1fr; }
  .win-featured-right { border-left: none; border-top: 1px solid rgba(0,196,140,0.15); }
  .other-platforms-grid { grid-template-columns: 1fr 1fr; }
  .comparison-mini { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .win-featured-card { grid-template-columns: 1fr; }
  .other-platforms-grid { grid-template-columns: 1fr; }
  .mac-install-grid { grid-template-columns: 1fr; }
  .install-steps::before { display: none; }
  .safety-inner { flex-direction: column; text-align: center; }
  .safety-badges { justify-content: center; }
  .article-layout { grid-template-columns: 1fr; gap: 32px; }
  .article-toc { order: 1; }
  .article-content { order: 2; }
  .toc-sticky { position: static; }
  .timeline-strip { flex-direction: column; }
  .timeline-item { border-right: none; border-bottom: 1px solid var(--border); }
  .timeline-item:last-child { border-bottom: none; }
  .comparison-mini { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .dl-hero-meta { flex-direction: column; align-items: center; }
  .win-file-info { grid-template-columns: 1fr 1fr; }
}