/* ═══════════════════════════════════════════════════
   Velvet Dusk Theme - WPS Office Landing Site
   丝绒黄昏主题 - 暖调暮光紫与蜜桃橙优雅组合
   ═══════════════════════════════════════════════════ */

/* ─── CSS Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: #3f3d3b;
  background: #faf8f5;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ─── Animation Keyframes ─── */
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ─── Layout Container ─── */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.sec { padding: 80px 0; }
.sec-sm { padding: 60px 0; }

/* ─── Navigation ─── */
.vd-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250, 248, 245, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(124, 58, 237, 0.08);
}
.vd-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.vd-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: #4c1d95;
}
.vd-brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #7c3aed 0%, #fb923c 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
}
.vd-menu { display: flex; align-items: center; gap: 8px; }
.vd-link {
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 0.95rem;
  font-weight: 500;
  color: #6b5b55;
  transition: all 0.3s ease;
}
.vd-link:hover { color: #7c3aed; background: rgba(124, 58, 237, 0.06); }
.vd-link.on {
  background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}
.vd-cta {
  padding: 10px 24px;
  background: linear-gradient(135deg, #fb923c 0%, #f97316 100%);
  color: #fff;
  border-radius: 24px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-left: 12px;
  box-shadow: 0 4px 15px rgba(251, 146, 60, 0.35);
  transition: all 0.3s ease;
}
.vd-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(251, 146, 60, 0.45); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: #7c3aed; border-radius: 2px; transition: 0.3s; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}
.btn-violet {
  background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.35);
}
.btn-violet:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(124, 58, 237, 0.45); }
.btn-peach {
  background: linear-gradient(135deg, #fb923c 0%, #f97316 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(251, 146, 60, 0.35);
}
.btn-peach:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(251, 146, 60, 0.45); }
.btn-outline {
  border: 2px solid #ddd6fe;
  color: #7c3aed;
  background: transparent;
}
.btn-outline:hover { background: rgba(124, 58, 237, 0.06); border-color: #c4b5fd; }
.btn-white {
  background: #fff;
  color: #7c3aed;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}
.btn-white:hover { box-shadow: 0 4px 15px rgba(0,0,0,0.12); }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-sm { padding: 10px 20px; font-size: 0.85rem; }

/* ─── Section Headers ─── */
.sec-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.sec-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(124, 58, 237, 0.08);
  color: #7c3aed;
  border-radius: 24px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.sec-chip-dot { width: 8px; height: 8px; background: #fb923c; border-radius: 50%; }
.sec-title { font-size: 2.25rem; font-weight: 800; color: #2d1b69; line-height: 1.2; margin-bottom: 16px; }
.sec-title-light { color: #fff; }
.sec-sub { font-size: 1.1rem; color: #7a6f6a; line-height: 1.7; }
.sec-sub-light { color: rgba(255,255,255,0.8); }
.hl { color: #7c3aed; }
.hl2 { color: #fb923c; }

/* ─── Hero Section ─── */
.hero {
  background: linear-gradient(160deg, #faf8f5 0%, #f5f3ff 40%, #fef3e2 100%);
  padding: 60px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(124,58,237,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(251,146,60,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.hero-text { animation: fadeInUp 0.8s ease; }
.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: linear-gradient(135deg, rgba(124,58,237,0.1) 0%, rgba(251,146,60,0.1) 100%);
  border: 1px solid rgba(124,58,237,0.15);
  border-radius: 24px;
  font-size: 0.9rem;
  color: #6b21a8;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-chip-dot { width: 10px; height: 10px; background: #fb923c; border-radius: 50%; animation: pulse 2s infinite; }
.hero-title { font-size: 3.5rem; font-weight: 800; color: #2d1b69; line-height: 1.15; margin-bottom: 24px; letter-spacing: -0.02em; }
.hero-desc { font-size: 1.15rem; color: #6b5b55; line-height: 1.8; margin-bottom: 32px; max-width: 520px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.hero-trust { display: flex; gap: 24px; flex-wrap: wrap; }
.hero-trust-item { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: #7a6f6a; }
.hero-trust-item svg { width: 20px; height: 20px; color: #fb923c; }

/* ─── Hero Visual ─── */
.hero-visual { position: relative; animation: fadeInUp 0.8s ease 0.2s both; }
.hero-mockup {
  background: linear-gradient(145deg, #fff 0%, #faf8f5 100%);
  border-radius: 24px;
  box-shadow: 0 25px 80px rgba(124,58,237,0.15), 0 10px 30px rgba(0,0,0,0.08);
  padding: 24px;
  position: relative;
}
.hm-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid #f0ebe5; }
.hm-dot { width: 12px; height: 12px; border-radius: 50%; }
.hm-dot.r { background: #fb7185; }
.hm-dot.y { background: #fbbf24; }
.hm-dot.g { background: #34d399; }
.hm-title { font-size: 0.85rem; color: #a69f9a; margin-left: 12px; }
.hm-body { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.hm-card {
  background: linear-gradient(145deg, #fff 0%, #f9f7f4 100%);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid rgba(124,58,237,0.08);
  transition: all 0.3s ease;
}
.hm-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(124,58,237,0.12); }
.hm-card-ico { width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.hm-ico-w { background: linear-gradient(135deg, #fb923c 0%, #f97316 100%); }
.hm-ico-s { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }
.hm-ico-p { background: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%); }
.hm-ico-pdf { background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%); }
.hm-card-lbl { font-size: 0.8rem; color: #a69f9a; margin-bottom: 4px; }
.hm-card-val { font-size: 1.35rem; font-weight: 700; color: #2d1b69; }

/* ─── Stats Strip ─── */
.stats-strip { background: linear-gradient(135deg, #3730a3 0%, #4c1d95 100%); padding: 48px 0; position: relative; overflow: hidden; }
.stats-strip::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  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='0.03'%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");
}
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.stat-item { text-align: center; }
.stat-num { font-size: 2.5rem; font-weight: 800; background: linear-gradient(135deg, #fb923c 0%, #fbbf24 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px; }
.stat-lbl { font-size: 0.95rem; color: rgba(255,255,255,0.75); }

/* ─── Feature Cards ─── */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feat-card {
  background: #fff;
  border-radius: 20px;
  padding: 32px;
  border: 1px solid rgba(124,58,237,0.06);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}
.feat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, #7c3aed 0%, #fb923c 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.feat-card:hover { transform: translateY(-6px); box-shadow: 0 20px 50px rgba(124,58,237,0.12); }
.feat-card:hover::before { opacity: 1; }
.feat-ico {
  width: 56px; height: 56px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.fi-violet { background: linear-gradient(135deg, #ddd6fe 0%, #c4b5fd 100%); color: #6d28d9; }
.fi-peach { background: linear-gradient(135deg, #fed7aa 0%, #fdba74 100%); color: #c2410c; }
.fi-pink { background: linear-gradient(135deg, #fecdd3 0%, #fda4af 100%); color: #be123c; }
.fi-teal { background: linear-gradient(135deg, #ccfbf1 0%, #99f6e4 100%); color: #0f766e; }
.fi-blue { background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%); color: #1d4ed8; }
.fi-amber { background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%); color: #b45309; }
.feat-name { font-size: 1.25rem; font-weight: 700; color: #2d1b69; margin-bottom: 12px; }
.feat-desc { font-size: 0.95rem; color: #7a6f6a; line-height: 1.7; }

/* ─── Platform Grid ─── */
.plat-sec { background: linear-gradient(145deg, #3730a3 0%, #4c1d95 100%); }
.plat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.plat-card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 32px 24px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.1);
  transition: all 0.3s ease;
}
.plat-card:hover { background: rgba(255,255,255,0.12); transform: translateY(-4px); }
.plat-card.featured { background: #fff; color: #2d1b69; }
.plat-card.featured .plat-name { color: #2d1b69; }
.plat-card.featured .plat-ver { color: #7a6f6a; }
.plat-badge {
  display: inline-block;
  padding: 6px 14px;
  background: linear-gradient(135deg, #fb923c 0%, #f97316 100%);
  color: #fff;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.plat-ico { width: 64px; height: 64px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; background: rgba(124,58,237,0.15); border-radius: 16px; }
.plat-card.featured .plat-ico { background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%); }
.plat-ico svg { width: 36px; height: 36px; color: #a78bfa; }
.plat-card.featured .plat-ico svg { color: #7c3aed; }
.plat-name { font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.plat-ver { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
.plat-card.featured .plat-btn { background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%); color: #fff; }
.plat-btn { display: inline-block; padding: 10px 24px; border-radius: 24px; font-weight: 600; font-size: 0.9rem; background: rgba(255,255,255,0.15); color: #fff; transition: all 0.3s ease; }
.plat-btn:hover { background: rgba(255,255,255,0.25); }

/* ─── Deep Dive Rows ─── */
.deep-row { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.deep-row.rev { direction: rtl; }
.deep-row.rev > * { direction: ltr; }
.deep-info { max-width: 520px; }
.deep-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.dc-violet { background: rgba(124,58,237,0.1); color: #6d28d9; }
.dc-peach { background: rgba(251,146,60,0.1); color: #c2410c; }
.dc-teal { background: rgba(45,212,191,0.1); color: #0f766e; }
.dc-pink { background: rgba(244,63,94,0.1); color: #be123c; }
.deep-chip-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.deep-title { font-size: 2rem; font-weight: 800; color: #2d1b69; margin-bottom: 16px; line-height: 1.3; }
.deep-desc { font-size: 1.05rem; color: #7a6f6a; line-height: 1.8; margin-bottom: 24px; }
.deep-list { display: flex; flex-direction: column; gap: 12px; }
.deep-list-item { display: flex; align-items: center; gap: 12px; font-size: 0.95rem; color: #5b524d; }
.deep-list-dot { width: 8px; height: 8px; border-radius: 50%; }
.deep-media { background: linear-gradient(145deg, #fff 0%, #faf8f5 100%); border-radius: 24px; padding: 32px; border: 1px solid rgba(124,58,237,0.08); }
.dv-title { font-size: 0.9rem; color: #a69f9a; margin-bottom: 20px; font-weight: 600; }
.dv-bar-row { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.dv-bar-label { width: 80px; font-size: 0.85rem; color: #7a6f6a; }
.dv-bar-track { flex: 1; height: 10px; background: #f0ebe5; border-radius: 5px; overflow: hidden; }
.dv-bar-fill { height: 100%; border-radius: 5px; transition: width 1s ease; }
.dv-violet { background: linear-gradient(90deg, #7c3aed 0%, #8b5cf6 100%); }
.dv-peach { background: linear-gradient(90deg, #fb923c 0%, #f97316 100%); }
.dv-teal { background: linear-gradient(90deg, #14b8a6 0%, #0d9488 100%); }
.dv-pink { background: linear-gradient(90deg, #f43f5e 0%, #e11d48 100%); }
.dv-bar-val { font-size: 0.85rem; font-weight: 700; color: #2d1b69; width: 40px; text-align: right; }
.dv-stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.dv-stat { text-align: center; padding: 16px; background: #fff; border-radius: 12px; }
.dv-stat-num { font-size: 1.5rem; font-weight: 800; margin-bottom: 4px; }
.dv-stat-violet { color: #7c3aed; }
.dv-stat-peach { color: #fb923c; }
.dv-stat-teal { color: #14b8a6; }
.dv-stat-lbl { font-size: 0.8rem; color: #a69f9a; }

/* ─── Reviews ─── */
.rev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.rev-card { background: #fff; border-radius: 20px; padding: 28px; border: 1px solid rgba(124,58,237,0.06); transition: all 0.3s ease; }
.rev-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(124,58,237,0.1); }
.rev-stars { display: flex; gap: 4px; margin-bottom: 16px; }
.rev-stars svg { width: 18px; height: 18px; color: #fbbf24; fill: currentColor; }
.rev-text { font-size: 0.95rem; color: #5b524d; line-height: 1.7; margin-bottom: 20px; }
.rev-footer { display: flex; align-items: center; gap: 12px; }
.rev-avatar { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.9rem; color: #fff; }
.av-violet { background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%); }
.av-peach { background: linear-gradient(135deg, #fb923c 0%, #f97316 100%); }
.av-pink { background: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%); }
.av-teal { background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%); }
.av-blue { background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%); }
.av-amber { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); }
.rev-name { font-size: 0.95rem; font-weight: 700; color: #2d1b69; }
.rev-role { font-size: 0.8rem; color: #a69f9a; }

/* ─── Comparison Table ─── */
.cmp-wrap { background: #fff; border-radius: 24px; padding: 40px; box-shadow: 0 8px 40px rgba(124,58,237,0.08); }
.cmp-table { width: 100%; border-collapse: collapse; }
.cmp-table th { text-align: left; padding: 16px 20px; font-weight: 700; color: #2d1b69; font-size: 0.95rem; border-bottom: 2px solid #ede9fe; }
.cmp-table td { padding: 16px 20px; border-bottom: 1px solid #f5f3ff; font-size: 0.95rem; }
.cmp-table tr:last-child td { border-bottom: none; }
.cmp-hl { color: #7c3aed; font-weight: 700; }
.cmp-yes { color: #059669; font-weight: 600; }
.cmp-no { color: #9ca3af; }
.cmp-part { color: #f59e0b; font-weight: 600; }

/* ─── FAQ ─── */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid #ede9fe; }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  color: #2d1b69;
  transition: color 0.3s ease;
}
.faq-q:hover { color: #7c3aed; }
.faq-chevron { width: 24px; height: 24px; color: #a69f9a; transition: transform 0.3s ease; }
.faq-item.open .faq-chevron { transform: rotate(180deg); color: #7c3aed; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item.open .faq-a { max-height: 300px; }
.faq-a-inner { padding-bottom: 24px; font-size: 1rem; color: #7a6f6a; line-height: 1.8; }

/* ─── CTA Banner ─── */
.cta-banner {
  background: linear-gradient(135deg, #3730a3 0%, #4c1d95 50%, #6d28d9 100%);
  border-radius: 32px;
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(251,146,60,0.15) 0%, transparent 50%);
  animation: float 6s ease-in-out infinite;
}
.cta-title { font-size: 2.5rem; font-weight: 800; color: #fff; margin-bottom: 16px; position: relative; }
.cta-desc { font-size: 1.1rem; color: rgba(255,255,255,0.8); margin-bottom: 32px; max-width: 560px; margin-left: auto; margin-right: auto; position: relative; }
.cta-btns { display: flex; gap: 16px; justify-content: center; position: relative; flex-wrap: wrap; }

/* ═══════════════════════════════════════════════════
   Download Page Styles
   ═══════════════════════════════════════════════════ */
.dl-hero { background: linear-gradient(160deg, #faf8f5 0%, #f5f3ff 50%, #fef3e2 100%); padding: 60px 0 80px; text-align: center; }
.dl-hero-chip { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; background: rgba(124,58,237,0.08); border-radius: 24px; font-size: 0.9rem; color: #6d28d9; font-weight: 600; margin-bottom: 24px; }
.dl-hero-title { font-size: 2.75rem; font-weight: 800; color: #2d1b69; margin-bottom: 16px; }
.dl-hero-sub { font-size: 1.1rem; color: #7a6f6a; max-width: 600px; margin: 0 auto 40px; }

.dl-main { max-width: 560px; margin: 0 auto 48px; }
.dl-card {
  background: linear-gradient(145deg, #fff 0%, #faf8f5 100%);
  border-radius: 28px;
  padding: 40px;
  border: 1px solid rgba(124,58,237,0.08);
  box-shadow: 0 20px 60px rgba(124,58,237,0.12);
  position: relative;
  overflow: hidden;
}
.dl-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 5px;
  background: linear-gradient(90deg, #7c3aed 0%, #fb923c 100%);
}
.dl-card-head { display: flex; align-items: center; gap: 20px; margin-bottom: 28px; }
.dl-card-icon { width: 72px; height: 72px; background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%); border-radius: 20px; display: flex; align-items: center; justify-content: center; }
.dl-card-icon svg { width: 40px; height: 40px; color: #fff; }
.dl-card-info { flex: 1; }
.dl-card-name { font-size: 1.5rem; font-weight: 700; color: #2d1b69; margin-bottom: 4px; }
.dl-card-meta { font-size: 0.9rem; color: #a69f9a; }
.dl-specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 28px; }
.dl-spec { background: #faf8f5; border-radius: 12px; padding: 16px; }
.dl-spec-label { font-size: 0.8rem; color: #a69f9a; margin-bottom: 4px; }
.dl-spec-val { font-size: 1rem; font-weight: 600; color: #2d1b69; }
.dl-sec-badge { display: flex; align-items: center; gap: 12px; padding: 16px; background: rgba(5,150,105,0.08); border-radius: 12px; margin-bottom: 28px; }
.dl-sec-badge svg { width: 24px; height: 24px; color: #059669; }
.dl-sec-badge span { font-size: 0.9rem; color: #047857; font-weight: 500; }
.dl-card-btns { display: flex; gap: 16px; }
.dl-card-btns .btn { flex: 1; }

.op-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 900px; margin: 0 auto; }
.op-card { background: #fff; border-radius: 20px; padding: 32px 24px; text-align: center; border: 1px solid rgba(124,58,237,0.06); transition: all 0.3s ease; }
.op-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(124,58,237,0.1); }
.op-icon { width: 56px; height: 56px; background: #faf8f5; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.op-icon svg { width: 32px; height: 32px; color: #7c3aed; }
.op-name { font-size: 1.15rem; font-weight: 700; color: #2d1b69; margin-bottom: 4px; }
.op-ver { font-size: 0.85rem; color: #a69f9a; margin-bottom: 20px; }
.op-steps { text-align: left; }
.op-step { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 12px; font-size: 0.85rem; color: #7a6f6a; }
.op-step-n { width: 24px; height: 24px; background: rgba(124,58,237,0.1); color: #7c3aed; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; flex-shrink: 0; }

.guide-sec { background: #fff; }
.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; max-width: 900px; margin: 0 auto; }
.guide-col-title { display: flex; align-items: center; gap: 12px; font-size: 1.25rem; font-weight: 700; color: #2d1b69; margin-bottom: 24px; }
.guide-col-dot { width: 12px; height: 12px; border-radius: 50%; }
.gd-violet { background: #7c3aed; }
.gd-peach { background: #fb923c; }
.guide-steps { display: flex; flex-direction: column; gap: 20px; }
.gstep { display: flex; gap: 16px; }
.gstep-num { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.9rem; flex-shrink: 0; }
.gn-violet { background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%); color: #fff; }
.gn-peach { background: linear-gradient(135deg, #fb923c 0%, #f97316 100%); color: #fff; }
.gstep-body { flex: 1; }
.gstep-title { font-size: 1rem; font-weight: 700; color: #2d1b69; margin-bottom: 4px; }
.gstep-desc { font-size: 0.9rem; color: #7a6f6a; }

.req-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1000px; margin: 0 auto; }
.req-card { background: #fff; border-radius: 16px; padding: 24px; text-align: center; border: 1px solid rgba(124,58,237,0.06); }
.req-icon { width: 48px; height: 48px; background: #faf8f5; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; }
.req-icon svg { width: 24px; height: 24px; color: #7c3aed; }
.req-title { font-size: 0.85rem; color: #a69f9a; margin-bottom: 8px; }
.req-val { font-size: 1.1rem; font-weight: 700; color: #2d1b69; }

.ver-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.ver-item { display: flex; gap: 20px; }
.ver-dot-col { display: flex; flex-direction: column; align-items: center; }
.ver-dot { width: 16px; height: 16px; border-radius: 50%; border: 3px solid; }
.ver-line { width: 2px; flex: 1; background: #ede9fe; margin-top: 8px; }
.vd-violet { border-color: #7c3aed; background: #fff; }
.vd-peach { border-color: #fb923c; background: #fff; }
.vd-teal { border-color: #14b8a6; background: #fff; }
.vd-pink { border-color: #f43f5e; background: #fff; }
.vd-amber { border-color: #f59e0b; background: #fff; }
.ver-body { flex: 1; background: #fff; border-radius: 16px; padding: 24px; border: 1px solid rgba(124,58,237,0.06); }
.ver-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.ver-num { font-size: 1.15rem; font-weight: 700; color: #2d1b69; }
.ver-tag { padding: 4px 12px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; }
.vt-stable { background: rgba(5,150,105,0.1); color: #047857; }
.vt-lts { background: rgba(29,78,216,0.1); color: #1d4ed8; }
.vt-beta { background: rgba(180,83,9,0.1); color: #b45309; }
.ver-date { font-size: 0.85rem; color: #a69f9a; margin-bottom: 8px; }
.ver-desc { font-size: 0.95rem; color: #7a6f6a; }

.sec-banner { background: linear-gradient(135deg, rgba(124,58,237,0.08) 0%, rgba(251,146,60,0.08) 100%); border-radius: 20px; padding: 32px; display: flex; align-items: center; gap: 20px; max-width: 800px; margin: 0 auto; }
.sec-banner-ico { width: 56px; height: 56px; background: linear-gradient(135deg, #7c3aed 0%, #fb923c 100%); border-radius: 16px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.sec-banner-ico svg { width: 28px; height: 28px; color: #fff; }
.sec-banner-title { font-size: 1.15rem; font-weight: 700; color: #2d1b69; margin-bottom: 4px; }
.sec-banner-desc { font-size: 0.95rem; color: #7a6f6a; }

/* ═══════════════════════════════════════════════════
   Article Page Styles (zh-cn.html)
   ═══════════════════════════════════════════════════ */
.art-hero { background: linear-gradient(160deg, #faf8f5 0%, #f5f3ff 50%, #fef3e2 100%); padding: 60px 0 48px; }
.art-hero-inner { max-width: 900px; margin: 0 auto; text-align: center; }
.art-hero-crumb { font-size: 0.9rem; color: #a69f9a; margin-bottom: 20px; }
.art-hero-crumb a { color: #7c3aed; }
.art-hero-crumb a:hover { text-decoration: underline; }
.art-hero-title { font-size: 2.5rem; font-weight: 800; color: #2d1b69; margin-bottom: 20px; line-height: 1.2; }
.art-hero-sub { font-size: 1.15rem; color: #7a6f6a; max-width: 640px; margin: 0 auto 32px; }

.kw-strip { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; max-width: 800px; margin: 0 auto; }
.kw {
  display: inline-block;
  padding: 8px 18px;
  background: rgba(124,58,237,0.08);
  color: #6d28d9;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(124,58,237,0.12);
}

.art-layout { display: grid; grid-template-columns: 1fr 320px; gap: 48px; max-width: 1200px; margin: 0 auto; padding: 48px 20px; }
.art-body { font-size: 1.05rem; color: #5b524d; line-height: 1.9; }
.art-body h2 { font-size: 1.75rem; font-weight: 700; color: #2d1b69; margin: 48px 0 24px; padding-bottom: 12px; border-bottom: 2px solid #ede9fe; }
.art-body h3 { font-size: 1.35rem; font-weight: 700; color: #4c1d95; margin: 36px 0 16px; }
.art-body p { margin-bottom: 20px; }
.art-body ul, .art-body ol { margin: 20px 0; padding-left: 24px; }
.art-body ul li { list-style: disc; margin-bottom: 10px; }
.art-body ol li { list-style: decimal; margin-bottom: 10px; }
.art-body strong { color: #2d1b69; font-weight: 700; }

.inline-cta {
  background: linear-gradient(135deg, rgba(124,58,237,0.08) 0%, rgba(251,146,60,0.08) 100%);
  border-left: 4px solid #7c3aed;
  border-radius: 0 16px 16px 0;
  padding: 28px;
  margin: 36px 0;
}
.inline-cta-title { font-size: 1.25rem; font-weight: 700; color: #2d1b69; margin-bottom: 8px; }
.inline-cta-desc { font-size: 1rem; color: #7a6f6a; margin-bottom: 20px; }

.tips-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin: 28px 0; }
.tip-card { background: #faf8f5; border-radius: 16px; padding: 24px; border: 1px solid rgba(124,58,237,0.06); }
.tip-num { width: 32px; height: 32px; background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.85rem; font-weight: 700; margin-bottom: 12px; }
.tip-title { font-size: 1.05rem; font-weight: 700; color: #2d1b69; margin-bottom: 8px; }
.tip-desc { font-size: 0.95rem; color: #7a6f6a; line-height: 1.6; }

/* ─── Sidebar ─── */
.sidebar { position: sticky; top: 100px; height: fit-content; }
.sbox { background: #fff; border-radius: 20px; padding: 24px; margin-bottom: 20px; border: 1px solid rgba(124,58,237,0.06); }
.sbox-title { font-size: 1rem; font-weight: 700; color: #2d1b69; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.sbox-title svg { width: 20px; height: 20px; color: #7c3aed; }

.sdl-btn { display: flex; align-items: center; gap: 12px; padding: 16px; border-radius: 12px; margin-bottom: 12px; transition: all 0.3s ease; border: 1px solid rgba(124,58,237,0.1); }
.sdl-btn:hover { background: rgba(124,58,237,0.04); transform: translateX(4px); }
.sdl-btn.primary { background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%); color: #fff; border: none; }
.sdl-btn.primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(124,58,237,0.3); }
.sdl-btn-ico { width: 40px; height: 40px; background: rgba(124,58,237,0.08); border-radius: 10px; display: flex; align-items: center; justify-content: center; }
.sdl-btn.primary .sdl-btn-ico { background: rgba(255,255,255,0.2); }
.sdl-btn-ico svg { width: 22px; height: 22px; color: #7c3aed; }
.sdl-btn.primary .sdl-btn-ico svg { color: #fff; }
.sdl-btn-info { flex: 1; }
.sdl-btn-name { font-weight: 700; font-size: 0.95rem; color: #2d1b69; margin-bottom: 2px; }
.sdl-btn.primary .sdl-btn-name { color: #fff; }
.sdl-btn-ver { font-size: 0.8rem; color: #a69f9a; }
.sdl-btn.primary .sdl-btn-ver { color: rgba(255,255,255,0.8); }

.stoc { display: flex; flex-direction: column; gap: 8px; }
.stoc a { padding: 10px 12px; border-radius: 8px; font-size: 0.9rem; color: #7a6f6a; transition: all 0.3s ease; border-left: 3px solid transparent; }
.stoc a:hover { background: rgba(124,58,237,0.04); color: #7c3aed; border-left-color: #7c3aed; padding-left: 16px; }

.sstat { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.sstat-item { text-align: center; padding: 16px; background: #faf8f5; border-radius: 12px; }
.sstat-num { font-size: 1.5rem; font-weight: 800; color: #7c3aed; margin-bottom: 4px; }
.sstat-lbl { font-size: 0.75rem; color: #a69f9a; }

.side-security { display: flex; align-items: center; gap: 12px; padding: 16px; background: rgba(5,150,105,0.06); border-radius: 12px; }
.side-security svg { width: 24px; height: 24px; color: #059669; }
.side-security span { font-size: 0.85rem; color: #047857; line-height: 1.5; }

/* ═══════════════════════════════════════════════════
   Footer
   ═══════════════════════════════════════════════════ */
.site-footer { background: #2d1b69; padding: 48px 0 32px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; text-align: center; }
.footer-brand { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 24px; font-weight: 700; font-size: 1.25rem; color: #fff; }
.footer-brand-icon { width: 40px; height: 40px; background: linear-gradient(135deg, #7c3aed 0%, #fb923c 100%); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.1rem; }
.footer-security { display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 0.95rem; color: #a78bfa; margin-bottom: 16px; }
.footer-security svg { width: 20px; height: 20px; color: #fb923c; }
.footer-note { font-size: 0.85rem; color: rgba(255,255,255,0.5); line-height: 1.7; }

/* ═══════════════════════════════════════════════════
   Responsive Styles
   ═══════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .art-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-title { font-size: 2.5rem; }
  .deep-row { grid-template-columns: 1fr; gap: 40px; }
  .deep-row.rev { direction: ltr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .plat-grid { grid-template-columns: repeat(2, 1fr); }
  .rev-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: 1fr; }
  .req-grid { grid-template-columns: repeat(2, 1fr); }
  .op-grid { grid-template-columns: 1fr; }
  .vd-menu { display: none; position: absolute; top: 72px; left: 0; right: 0; background: rgba(250,248,245,0.98); flex-direction: column; padding: 20px; gap: 8px; box-shadow: 0 10px 40px rgba(0,0,0,0.1); }
  .vd-menu.show { display: flex; }
  .nav-toggle { display: flex; }
  .vd-cta { margin-left: 0; margin-top: 12px; }
}

@media (max-width: 640px) {
  .sec { padding: 60px 0; }
  .sec-title { font-size: 1.75rem; }
  .hero-title { font-size: 2rem; }
  .hero-btns { flex-direction: column; }
  .feat-grid { grid-template-columns: 1fr; }
  .plat-grid { grid-template-columns: 1fr; }
  .rev-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; gap: 24px; }
  .tips-grid { grid-template-columns: 1fr; }
  .cmp-wrap { padding: 24px; overflow-x: auto; }
  .cmp-table { min-width: 600px; }
  .dl-card { padding: 28px; }
  .dl-specs { grid-template-columns: 1fr; }
  .dl-card-btns { flex-direction: column; }
  .cta-banner { padding: 48px 24px; }
  .cta-title { font-size: 1.75rem; }
  .sstat { grid-template-columns: 1fr; }
  .art-hero-title { font-size: 1.75rem; }
  .art-body h2 { font-size: 1.35rem; }
}