/* === Site 6: Bold Rose Theme === */
:root {
  --primary: #e11d48;
  --primary-dark: #be123c;
  --primary-light: #ffe4e6;
  --accent: #f97316;
  --text: #1e1b4b;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-alt: #fff1f2;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-lg: 28px;
  --shadow: 0 2px 8px rgba(0,0,0,0.05);
  --shadow-lg: 0 14px 36px rgba(0,0,0,0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif; color: var(--text); line-height: 1.7; background: var(--bg); }

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

/* Nav - bold bottom border */
.nav-main { background: var(--bg); border-bottom: 4px solid var(--primary); position: fixed; top: 0; left: 0; right: 0; z-index: 100; }
.nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-brand { font-size: 1.35rem; font-weight: 800; color: var(--primary); text-decoration: none; display: flex; align-items: center; gap: 10px; }
.nav-links { display: flex; gap: 4px; list-style: none; }
.nav-links a { padding: 8px 20px; border-radius: 10px; font-size: 0.875rem; font-weight: 600; color: var(--text-light); text-decoration: none; transition: all 0.2s; text-transform: uppercase; letter-spacing: 0.5px; }
.nav-links a:hover { color: var(--primary); background: var(--primary-light); }
.nav-links a.active { color: #fff; background: var(--primary); }

/* Hero */
.hero { padding: 130px 24px 80px; background: linear-gradient(135deg, #fff1f2 0%, #ffffff 50%, #fff7ed 100%); }
.hero-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero h1 { font-size: 3rem; font-weight: 900; line-height: 1.1; margin-bottom: 20px; }
.hero h1 span { color: var(--primary); }
.hero-sub { font-size: 1.0625rem; color: var(--text-light); margin-bottom: 32px; line-height: 1.85; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 30px; border-radius: 14px; font-size: 0.9375rem; font-weight: 700; text-decoration: none; cursor: pointer; border: none; transition: all 0.25s; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 20px rgba(225,29,72,0.25); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 10px 28px rgba(225,29,72,0.35); }
.btn-secondary { background: #fff; color: var(--text); border: 2px solid var(--border); }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-dl { display: inline-flex; align-items: center; gap: 6px; padding: 10px 22px; background: var(--primary); color: #fff; border: none; border-radius: 10px; font-size: 0.8125rem; font-weight: 700; cursor: pointer; transition: all 0.2s; }
.btn-dl:hover { background: var(--primary-dark); }
.hero-visual { background: linear-gradient(135deg, var(--primary-light), #ffedd5); border-radius: var(--radius-lg); height: 340px; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.hero-visual::before { content: ''; position: absolute; width: 180px; height: 180px; background: rgba(225,29,72,0.06); border-radius: 50%; bottom: -40px; left: -40px; }

/* Section */
.section { padding: 80px 24px; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-title { font-size: 2.5rem; font-weight: 900; margin-bottom: 14px; }
.section-sub { font-size: 1.0625rem; color: var(--text-light); max-width: 640px; margin: 0 auto; }

/* Features - staggered cards */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: var(--bg); border: 2px solid var(--border); border-radius: var(--radius); padding: 32px 24px; text-align: center; transition: all 0.3s; }
.feature-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-8px) rotate(1deg); }
.feature-icon { width: 60px; height: 60px; background: var(--primary-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; color: var(--primary); }
.feature-card h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 10px; }
.feature-card p { color: var(--text-light); font-size: 0.875rem; line-height: 1.75; }

/* Download */
.dl-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.dl-card { background: linear-gradient(135deg, var(--bg-alt), #fff); border: 2px solid var(--primary-light); border-radius: var(--radius); padding: 28px 18px; text-align: center; transition: all 0.25s; }
.dl-card:hover { border-color: var(--primary); transform: translateY(-4px) scale(1.02); }
.dl-icon { width: 56px; height: 56px; background: var(--primary); border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; color: #fff; }
.dl-card h4 { font-size: 1.05rem; font-weight: 800; margin-bottom: 4px; }
.dl-card p { font-size: 0.8125rem; color: var(--text-light); margin-bottom: 16px; line-height: 1.6; }

/* Product - masonry-like */
.prod-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.prod-card { background: var(--bg); border: 2px solid var(--border); border-radius: var(--radius); padding: 32px; display: flex; gap: 20px; align-items: flex-start; transition: all 0.25s; }
.prod-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-lg); }
.prod-icon { width: 56px; height: 56px; background: var(--primary-light); border-radius: 14px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--primary); }
.prod-info h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 10px; }
.prod-info p { color: var(--text-light); font-size: 0.875rem; line-height: 1.75; }

/* Testimonials - card with accent border */
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.testi-card { background: var(--bg); border-radius: var(--radius); padding: 28px; border-top: 4px solid var(--primary); box-shadow: var(--shadow); }
.testi-stars { color: #fbbf24; font-size: 0.9375rem; margin-bottom: 14px; letter-spacing: 2px; }
.testi-text { color: var(--text); line-height: 1.75; margin-bottom: 18px; font-size: 0.875rem; }
.testi-author { display: flex; align-items: center; gap: 10px; }
.testi-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--primary); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 0.8rem; font-weight: 700; }
.testi-name { font-weight: 700; font-size: 0.875rem; }
.testi-role { font-size: 0.75rem; color: var(--text-light); }

/* Stats */
.stats-bar { background: linear-gradient(90deg, #be123c, #e11d48, #f97316); padding: 56px 24px; }
.stats-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-num { font-size: 2.5rem; font-weight: 900; color: #fff; }
.stat-label { font-size: 0.875rem; color: rgba(255,255,255,0.85); margin-top: 4px; }

/* Comparison */
.compare-table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--bg); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.compare-table th { background: var(--primary); color: #fff; padding: 14px 24px; text-align: left; font-weight: 700; }
.compare-table td { padding: 12px 24px; border-bottom: 1px solid var(--border); font-size: 0.875rem; }
.compare-table tr:nth-child(even) { background: var(--bg-alt); }
.compare-table .yes { color: #16a34a; font-weight: 700; }
.compare-table .no { color: #dc2626; }

/* FAQ */
.faq-item { background: var(--bg-alt); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; }
.faq-q { padding: 18px 24px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 700; font-size: 0.9375rem; }
.faq-q:hover { background: #fecdd3; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a-inner { padding: 0 24px 20px; color: var(--text-light); font-size: 0.875rem; line-height: 1.8; }
.faq-item.open .faq-a { max-height: 400px; }
.faq-item.open .faq-q { color: var(--primary); }
.faq-icon { width: 26px; height: 26px; background: #e2e8f0; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 0.625rem; transition: all 0.3s; }
.faq-item.open .faq-icon { background: var(--primary); color: #fff; transform: rotate(180deg); }

/* Footer */
.footer { background: #4c0519; color: #fecdd3; padding: 44px 24px; text-align: center; font-size: 0.8125rem; }
.footer p { margin-bottom: 8px; }
.footer strong { color: #fda4af; }

/* Download page */
.dl-hero { padding: 130px 24px 60px; background: linear-gradient(135deg, #4c0519, #e11d48); color: #fff; text-align: center; }
.dl-hero h1 { font-size: 2.5rem; font-weight: 900; margin-bottom: 12px; }
.dl-hero p { color: #fecdd3; max-width: 640px; margin: 0 auto; }

.win-box { background: #fff; border: 3px solid var(--primary-light); border-radius: var(--radius-lg); padding: 44px; text-align: center; max-width: 640px; margin: 0 auto 40px; }
.win-box h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 10px; color: var(--text); }
.win-box p { color: var(--text-light); margin-bottom: 22px; }
.win-meta { display: flex; justify-content: center; gap: 24px; margin-bottom: 22px; flex-wrap: wrap; font-size: 0.8125rem; color: var(--text-light); }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 16px; }
.step { text-align: center; background: var(--bg); border: 2px solid var(--border); border-radius: var(--radius); padding: 24px 16px; transition: all 0.2s; }
.step:hover { border-color: var(--primary-light); }
.step-num { width: 44px; height: 44px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; margin: 0 auto 14px; }
.step h4 { font-size: 0.9375rem; font-weight: 800; margin-bottom: 8px; }
.step p { font-size: 0.8125rem; color: var(--text-light); line-height: 1.65; }

.sys-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.sys-card { background: var(--bg); border: 2px solid var(--border); border-radius: var(--radius); padding: 22px; }
.sys-card h4 { font-size: 1rem; font-weight: 800; margin-bottom: 12px; color: var(--primary); }
.sys-card ul { list-style: none; }
.sys-card li { padding: 6px 0; font-size: 0.8125rem; color: var(--text-light); border-bottom: 1px solid var(--border); }
.sys-card li:last-child { border-bottom: none; }

.changelog { background: var(--bg); border: 2px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.chg-item { padding: 18px 24px; border-bottom: 1px solid var(--border); }
.chg-item:last-child { border-bottom: none; }
.chg-ver { font-weight: 800; color: var(--primary); }
.chg-date { font-size: 0.75rem; color: var(--text-light); margin-left: 10px; font-weight: 400; }
.chg-list { margin: 6px 0 0; padding-left: 18px; color: var(--text-light); font-size: 0.8125rem; }

/* CTA */
.cta-bar { background: linear-gradient(135deg, #4c0519, #e11d48); padding: 60px 24px; text-align: center; color: #fff; }
.cta-bar h2 { font-size: 1.75rem; font-weight: 900; margin-bottom: 12px; }
.cta-bar p { color: #fecdd3; margin-bottom: 28px; }

/* Responsive */
@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero h1 { font-size: 2rem; }
  .features-grid { grid-template-columns: 1fr; }
  .dl-grid, .testi-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 48px 20px; }
}

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }