/* === Apple Video - Premium Design System === */

:root {
  --color-primary: #1a56db;
  --color-primary-light: #3b82f6;
  --color-primary-dark: #1e40af;
  --color-primary-bg: rgba(26,86,219,0.06);
  --color-secondary: #0f172a;
  --color-accent: #06b6d4;
  --color-accent-light: #22d3ee;
  --color-accent-bg: rgba(6,182,212,0.08);
  --color-success: #059669;
  --color-success-bg: rgba(5,150,105,0.08);
  --color-warning: #d97706;
  --color-error: #dc2626;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-warm: #f0fdfa;
  --color-bg-dark: #0f172a;
  --color-bg-darker: #020617;
  --color-text: #475569;
  --color-text-light: #64748b;
  --color-text-heading: #0f172a;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --radius: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow: 0 4px 16px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 48px rgba(0,0,0,0.1), 0 8px 16px rgba(0,0,0,0.06);
  --transition: 0.3s ease;
  --transition-fast: 0.15s ease;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --container: 1200px;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); background: var(--color-bg); color: var(--color-text); line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }

/* === Typography === */
h1, h2, h3, h4, h5, h6 { color: var(--color-text-heading); line-height: 1.2; }
h1 { font-size: clamp(2rem, 4.5vw, 2.75rem); font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: clamp(1.1rem, 2vw, 1.3rem); font-weight: 600; }
p { line-height: 1.75; }

/* === Layout === */
/* 键盘用户跳过导航直接进正文。原版 s1 没有这个，s2 原版有；
   按 SEO 与可访问性优先补上，视觉上默认移出视口，只有获得焦点才出现。 */
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 1000; padding: 10px 15px; color: #fff; background: var(--color-primary); border-radius: 6px; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { margin-bottom: 12px; }
.section-header p { color: var(--color-text-light); max-width: 560px; margin: 0 auto; font-size: 1.05rem; }

/* === Header === */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); border-bottom-color: var(--color-border); }

.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--color-secondary); }
.logo-icon { width: 34px; height: 34px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); border-radius: 9px; display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 8px rgba(26,86,219,0.3); }
.logo-icon svg { width: 14px; height: 14px; fill: #fff; }

/* Navigation */
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-item { padding: 8px 14px; font-size: 0.9rem; color: var(--color-text); border-radius: 6px; transition: color var(--transition), background var(--transition); position: relative; }
.nav-item:hover { color: var(--color-primary); background: var(--color-primary-bg); }
.nav-item.active { color: var(--color-primary); font-weight: 600; }

/* Dropdown */
.nav-dropdown { position: relative; display: flex; align-items: center; flex-wrap: wrap; }
.nav-dropdown > .nav-item { flex: 1; }
.nav-dropdown > [data-submenu-button] { display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 44px; padding: 0; color: var(--color-text); border-radius: 6px; }
.nav-dropdown > [data-submenu-button]:hover { background: var(--color-primary-bg); color: var(--color-primary); }
.nav-dropdown > [data-submenu-button]:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.nav-dropdown[data-submenu-state="closed"] > .dropdown-menu { display: none; }
.dropdown-menu {
  position: absolute; top: 100%; left: 0; min-width: 190px;
  padding: 8px; background: #fff; border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: all 0.2s ease;
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.open .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu a { display: block; padding: 9px 14px; font-size: 0.85rem; color: var(--color-text); border-radius: 6px; transition: background var(--transition); }
.dropdown-menu a:hover, .dropdown-menu a[data-nav-active="true"] { background: var(--color-bg-alt); color: var(--color-primary); }

/* Mobile toggle */
.mobile-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.mobile-toggle span { width: 20px; height: 2px; background: var(--color-secondary); border-radius: 1px; transition: all var(--transition); }

/* Nav Search */
.nav-search { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 8px; color: var(--color-text); transition: color var(--transition), background var(--transition); margin-left: 4px; }
.nav-search:hover { color: var(--color-primary); background: var(--color-primary-bg); }
.nav-search svg { width: 18px; height: 18px; }

/* === Buttons === */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 26px; font-size: 0.9rem; font-weight: 600; border-radius: 8px; transition: all var(--transition); cursor: pointer; }
.btn-primary { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); color: #fff; box-shadow: 0 2px 8px rgba(26,86,219,0.25); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(26,86,219,0.35); }
.btn-outline { border: 1.5px solid var(--color-border); color: var(--color-text-heading); background: #fff; }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-bg); }
.btn-accent { background: linear-gradient(135deg, var(--color-accent), #0891b2); color: #fff; box-shadow: 0 2px 8px rgba(6,182,212,0.25); }
.btn-accent:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(6,182,212,0.35); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: 10px; }
.btn-sm { padding: 8px 16px; font-size: 0.82rem; }

/* === Breadcrumb === */
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; padding: 0; font-size: 0.85rem; color: rgba(255,255,255,0.6); }
.breadcrumb a { color: rgba(255,255,255,0.7); transition: color var(--transition); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep, .breadcrumb .separator,
.breadcrumb > span:last-child, .breadcrumb .current { color: rgba(255,255,255,0.9); }

/* === Page Header (Inner pages - dark premium style) === */
.page-header {
  padding: 120px 0 56px;
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1e293b 100%);
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(26,86,219,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -10%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(217,119,6,0.1) 0%, transparent 70%);
  border-radius: 50%;
}
.page-header .container { position: relative; z-index: 1; }
.page-header h1 { color: #fff; margin-top: 12px; }
.page-header p { color: rgba(255,255,255,0.7); margin-top: 8px; font-size: 1.05rem; }

/* === Cards === */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: var(--shadow-sm);
}
.card:hover { border-color: var(--color-border-hover); box-shadow: var(--shadow-lg); transform: translateY(-4px); }

.card-img { border-radius: var(--radius); overflow: hidden; margin-bottom: 16px; }
.card-img img { width: 100%; aspect-ratio: 3/2; object-fit: cover; transition: transform 0.4s ease; }
.card:hover .card-img img { transform: scale(1.03); }

.card h3 { margin-bottom: 8px; }
.card p { font-size: 0.9rem; color: var(--color-text-light); }
.card-link { display: inline-flex; align-items: center; gap: 4px; margin-top: 14px; font-size: 0.85rem; font-weight: 600; color: var(--color-primary); transition: gap var(--transition); }
.card:hover .card-link { gap: 8px; }

/* Accent-topped cards (for product features) */
.card--accent { border-top: 3px solid var(--color-accent); }
.card--primary { border-top: 3px solid var(--color-primary); }
.card--success { border-top: 3px solid var(--color-success); }

/* === News Card === */
.news-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition); box-shadow: var(--shadow-sm); }
.news-card:hover { border-color: var(--color-border-hover); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.news-card-img { overflow: hidden; }
.news-card-img img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform 0.4s ease; }
.news-card:hover .news-card-img img { transform: scale(1.03); }
.news-card-body { padding: 22px; }
.news-card-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: 0.8rem; }
.news-tag { padding: 3px 10px; border-radius: 5px; background: var(--color-primary-bg); color: var(--color-primary); font-weight: 600; font-size: 0.75rem; }
.news-tag--accent { background: rgba(99,102,241,0.08); color: #6366f1; }
.news-date { color: var(--color-text-light); }
.news-card h3 { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.4; }
.news-card p { font-size: 0.88rem; color: var(--color-text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* === Grids === */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* === Sub Nav === */
.sub-nav-section { background: #fff; border-bottom: 1px solid var(--color-border); position: sticky; top: 68px; z-index: 99; }
.sub-nav { display: flex; align-items: center; gap: 4px; padding: 12px 0; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.sub-nav a, .sub-nav-link { padding: 8px 18px; font-size: 0.88rem; color: var(--color-text-light); border-radius: 6px; white-space: nowrap; transition: all var(--transition); font-weight: 500; }
.sub-nav a:hover, .sub-nav-link:hover { color: var(--color-primary); background: var(--color-primary-bg); }
.sub-nav a.active, .sub-nav-link.active { color: var(--color-primary); background: var(--color-primary-bg); font-weight: 600; }

/* === Feature Row (Product detail pages) === */
.feature-section { padding: 80px 0; }
.feature-section:nth-child(even) { background: var(--color-bg-alt); }

.feature-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: center;
}
.feature-row.reverse { grid-template-columns: 1fr 1.1fr; }
.feature-row.reverse .feature-img { order: 2; }
.feature-row.reverse .feature-content { order: 1; }

.feature-img {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.feature-img::before {
  content: '';
  position: absolute;
  top: -20px; left: -20px;
  width: 120px; height: 120px;
  background: var(--color-primary-bg);
  border-radius: 50%;
  z-index: 0;
}
.feature-img img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-lg);
}
.feature-content h2 { margin-bottom: 16px; }
.feature-content p { margin-bottom: 16px; color: var(--color-text); }
.feature-content .btn { margin-top: 8px; }

/* Feature list with icons */
.feature-list { display: flex; flex-direction: column; gap: 16px; margin-top: 24px; }
.feature-list li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 0.92rem; color: var(--color-text);
  padding: 12px 16px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  transition: background var(--transition);
}
.feature-list li:hover { background: var(--color-primary-bg); }
.feature-list li::before {
  content: '';
  width: 20px; height: 20px; min-width: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  margin-top: 2px;
  display: flex; align-items: center; justify-content: center;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 11px;
  background-color: var(--color-primary);
}

/* === Highlights Grid (How it works / core advantages) === */
.highlights-section { padding: 80px 0; }
.highlights-section h2 { text-align: center; margin-bottom: 48px; }

.highlight-card {
  padding: 32px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.highlight-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  opacity: 0;
  transition: opacity var(--transition);
}
.highlight-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.highlight-card:hover::before { opacity: 1; }
.highlight-card h3 { margin-bottom: 10px; font-size: 1.1rem; }
.highlight-card p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.7; }
.highlight-card .card-number {
  position: absolute;
  top: 16px; right: 20px;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary-bg);
  line-height: 1;
}

/* === CTA Section (Bottom call to action) === */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1e293b 50%, var(--color-primary-dark) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 800px; height: 800px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(26,86,219,0.12) 0%, transparent 60%);
  border-radius: 50%;
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { color: #fff; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,0.7); margin-bottom: 28px; font-size: 1.05rem; }
.cta-section .btn { padding: 14px 36px; font-size: 1rem; }

/* === Article (News detail) === */
.article-content { max-width: 760px; margin: 0 auto; padding: 48px 0 64px; }
.article-content h1 { margin-bottom: 16px; font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
.article-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
.page-header .article-meta { flex-wrap: wrap; color: #cbd5e1; }
.page-header .article-meta .news-date { color: inherit; }
.page-header .article-meta .news-tag { color: #e0e7ff; background: rgba(165,180,252,0.16); }
.article-hero { border-radius: var(--radius-xl); overflow: hidden; margin-bottom: 36px; box-shadow: var(--shadow); }
.article-hero img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.article-body p { margin-bottom: 22px; line-height: 1.85; font-size: 1.02rem; }
.article-body h2 { font-size: 1.4rem; margin: 40px 0 14px; }
.article-body h3 { font-size: 1.15rem; margin: 28px 0 10px; }
.article-body ul { padding-left: 20px; margin-bottom: 22px; }
.article-body li { list-style: disc; margin-bottom: 8px; color: var(--color-text); line-height: 1.7; }

.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--color-border); }
.article-nav a { padding: 18px; border: 1px solid var(--color-border); border-radius: var(--radius-lg); transition: all var(--transition); box-shadow: var(--shadow-sm); }
.article-nav a:hover { border-color: var(--color-primary); box-shadow: var(--shadow); transform: translateY(-2px); }
.article-nav .nav-label { font-size: 0.75rem; color: var(--color-text-light); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.05em; }
.article-nav .nav-title { font-size: 0.92rem; font-weight: 600; color: var(--color-text-heading); }

/* Related articles section */
.related-section { padding: 64px 0; background: var(--color-bg-alt); }
.related-section h2 { text-align: center; margin-bottom: 36px; }

/* === Contact === */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; }
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-card { display: flex; align-items: flex-start; gap: 16px; padding: 22px; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); transition: all var(--transition); box-shadow: var(--shadow-sm); }
.contact-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.contact-icon { width: 44px; height: 44px; border-radius: 10px; background: var(--color-primary-bg); display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--color-primary); }
.contact-card h4 { font-size: 0.92rem; margin-bottom: 4px; }
.contact-card p { font-size: 0.88rem; color: var(--color-text-light); }

.contact-form { padding: 36px; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-xl); box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 6px; color: var(--color-text-heading); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px;
  border: 1.5px solid var(--color-border); border-radius: 8px;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--color-bg-alt);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-bg);
  background: #fff;
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* === Download Page === */
.download-hero { text-align: center; padding: 48px; background: linear-gradient(135deg, var(--color-bg-alt), #fff); border: 1px solid var(--color-border); border-radius: var(--radius-xl); margin-bottom: 40px; box-shadow: var(--shadow-sm); }
.download-hero h2 { margin-bottom: 12px; }
.download-hero p { color: var(--color-text-light); margin-bottom: 24px; }

.platform-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.platform-card { padding: 32px 24px; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); text-align: center; transition: all var(--transition); box-shadow: var(--shadow-sm); }
.platform-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.platform-card .platform-icon { width: 56px; height: 56px; margin: 0 auto 16px; background: var(--color-primary-bg); border-radius: 14px; display: flex; align-items: center; justify-content: center; }
.platform-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.platform-card p { font-size: 0.82rem; color: var(--color-text-light); margin-bottom: 16px; }

/* === Footer === */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 28px;
  position: relative;
}
/* 页脚上的品牌名要看得见。
   .logo 的字色是 --color-secondary（#0f172a，近黑），而页脚背景是深色，
   于是「苹果视频」这四个字压在同色底上，等于隐形。原版静态站也是这样——
   照着原版还原时把这个毛病一起抄了过来。这里只在页脚范围内改字色，
   页头的 logo 不受影响。 */
.site-footer .logo { color: #fff; }

.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(26,86,219,0.3), transparent);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand p { margin-top: 14px; font-size: 0.88rem; max-width: 300px; line-height: 1.6; }
.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  color: rgba(255,255,255,0.6);
}
.footer-social a:hover { background: var(--color-primary); color: #fff; }
.footer-group h4 { color: #fff; font-size: 0.88rem; margin-bottom: 16px; font-weight: 600; }
.footer-group ul { display: flex; flex-direction: column; gap: 10px; }
.footer-group a { font-size: 0.85rem; color: rgba(255,255,255,0.55); transition: color var(--transition); }
.footer-group a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 28px; border-top: 1px solid rgba(255,255,255,0.06); font-size: 0.8rem; color: rgba(255,255,255,0.35); }

/* === 404 & Search === */
.error-page, .search-page { text-align: center; padding: 140px 24px 100px; }
.error-page h1 { font-size: 7rem; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 12px; }
.error-page p { margin-bottom: 28px; font-size: 1.05rem; }
.search-input { display: flex; max-width: 520px; margin: 0 auto; box-shadow: var(--shadow); border-radius: 10px; overflow: hidden; }
.search-input input { flex: 1; padding: 14px 18px; border: 1.5px solid var(--color-border); border-right: none; border-radius: 10px 0 0 10px; }
.search-input input:focus { outline: none; border-color: var(--color-primary); }
.search-input button { padding: 14px 24px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); color: #fff; border-radius: 0 10px 10px 0; font-weight: 600; }

/* === Back to Top Button === */
.back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 44px; height: 44px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 999;
  cursor: pointer;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-2px); }
.back-to-top svg { width: 20px; height: 20px; }

/* === Hero Split Section === */
.hero-split {
  padding: 140px 0 80px;
  background: linear-gradient(170deg, #f8fafc 0%, #fff 50%, var(--color-primary-bg) 100%);
  position: relative;
  overflow: hidden;
}
.hero-split::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(26,86,219,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: center;
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 20px;
  margin-bottom: 20px;
  border: 1px solid rgba(26,86,219,0.12);
}
.hero-content h1 { margin-bottom: 20px; font-size: clamp(2.2rem, 5vw, 3rem); }
.hero-desc { font-size: 1.1rem; color: var(--color-text); line-height: 1.8; margin-bottom: 32px; max-width: 480px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 32px; }
.hero-trust { display: flex; align-items: center; gap: 12px; font-size: 0.88rem; color: var(--color-text-light); }
.trust-avatars { display: flex; }
.trust-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  border: 2px solid #fff;
  margin-right: -8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.hero-visual { position: relative; }
.hero-device {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: visible;
}
.hero-device img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}
.hero-float {
  position: absolute;
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  background: #fff;
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-heading);
  animation: float 3s ease-in-out infinite;
}
.hero-float svg { color: var(--color-primary); }
.hero-float-1 { top: 20%; right: -10px; }
.hero-float-2 { bottom: 25%; left: -20px; animation-delay: 1.5s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* === Stats Section === */
.stats-section {
  padding: 56px 0;
  background: #fff;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item { position: relative; }
.stat-item::after {
  content: '';
  position: absolute;
  top: 10%; right: 0;
  height: 80%;
  width: 1px;
  background: var(--color-border);
}
.stat-item:last-child::after { display: none; }
.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  display: inline;
  line-height: 1;
}
.stat-unit {
  display: inline;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}
.stat-label {
  margin-top: 6px;
  font-size: 0.88rem;
  color: var(--color-text-light);
}

/* === Feature Cards (Homepage) === */
.features-showcase {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  padding: 32px 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.feature-card:hover::after { opacity: 1; }
.feature-card-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.feature-card-icon--primary { background: var(--color-primary-bg); color: var(--color-primary); }
.feature-card-icon--accent { background: var(--color-accent-bg); color: var(--color-accent); }
.feature-card-icon--purple { background: rgba(99,102,241,0.08); color: #6366f1; }
.feature-card-icon--success { background: var(--color-success-bg); color: var(--color-success); }
.feature-card-icon--warning { background: rgba(6,182,212,0.06); color: #0891b2; }
.feature-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.feature-card p { font-size: 0.88rem; color: var(--color-text-light); line-height: 1.7; margin-bottom: 16px; }
.feature-card-link {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.82rem; font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition);
}
.feature-card:hover .feature-card-link { gap: 8px; }

/* === Testimonials === */
.testimonials-section { position: relative; overflow: hidden; }
.testimonials-section::before {
  content: '';
  position: absolute;
  top: 0; left: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(26,86,219,0.04) 0%, transparent 70%);
  border-radius: 50%;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.testimonial-stars { display: flex; gap: 2px; margin-bottom: 16px; color: #f59e0b; }
.testimonial-text {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.75;
  margin-bottom: 20px;
  font-style: italic;
}
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
}
.testimonial-name { font-size: 0.88rem; font-weight: 600; color: var(--color-text-heading); }
.testimonial-role { font-size: 0.78rem; color: var(--color-text-light); }

/* CTA buttons wrapper */
.cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* === Scroll Animations === */
.fade-up { opacity: 0; transform: translateY(28px); transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1); }
.fade-up.visible { opacity: 1; transform: translateY(0); }

.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.1s; }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.2s; }

/* === New Hero Section === */
.hero-section { position: relative; padding: 140px 0 80px; background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%); overflow: hidden; }
.hero-section::before { content: ''; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px; background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 70%); border-radius: 50%; pointer-events: none; }
.hero-section::after { content: ''; position: absolute; bottom: -30%; left: -10%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(6,182,212,0.1) 0%, transparent 70%); border-radius: 50%; pointer-events: none; }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.hero-text { color: #fff; }
.hero-text h1 { font-size: 2.75rem; line-height: 1.2; margin-bottom: 20px; font-weight: 700; }
.hero-text h1 span { background: linear-gradient(135deg, #60a5fa, #06b6d4); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-text .hero-desc { font-size: 1.1rem; color: rgba(255,255,255,0.7); line-height: 1.7; margin-bottom: 32px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-buttons .btn-primary { background: linear-gradient(135deg, #3b82f6, #2563eb); padding: 14px 32px; font-size: 1rem; }
.hero-buttons .btn-ghost { color: #fff; border: 1px solid rgba(255,255,255,0.3); padding: 14px 32px; font-size: 1rem; border-radius: 8px; transition: all var(--transition); }
.hero-buttons .btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.05); }
.hero-image { text-align: center; position: relative; }
.hero-image img { width: 100%; max-width: 480px; height: auto; filter: drop-shadow(0 20px 60px rgba(0,0,0,0.4)); }
.hero-badge { position: absolute; padding: 10px 16px; border-radius: 10px; background: rgba(255,255,255,0.1); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.15); color: #fff; font-size: 0.8rem; font-weight: 500; }
.hero-badge-1 { top: 10%; left: -10%; }
.hero-badge-2 { bottom: 20%; right: -5%; }
.hero-badge svg { width: 16px; height: 16px; vertical-align: -2px; margin-right: 6px; color: #06b6d4; }

/* === Download Hero === */
.download-hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.download-hero-content h2 { font-size: 1.8rem; margin-bottom: 12px; }
.download-hero-content p { color: var(--color-text-light); line-height: 1.7; margin-bottom: 20px; }
.download-hero-image { text-align: center; }
.download-hero-image img { max-width: 320px; width: 100%; }

/* === Search Page === */
.search-box { max-width: 600px; margin: 0 auto 40px; }
.search-form { display: flex; gap: 8px; }
.search-form input { flex: 1; }
.search-btn { min-width: 80px; }
.hot-search { max-width: 600px; margin: 0 auto; }
.hot-search h3 { font-size: 1rem; margin-bottom: 12px; color: var(--color-text-light); }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { display: inline-block; padding: 6px 14px; border-radius: 20px; font-size: 0.85rem; background: #f1f5f9; color: var(--color-text); border: 1px solid var(--color-border); transition: all var(--transition); }
.tag:hover { border-color: var(--color-primary); color: var(--color-primary); background: rgba(26,86,219,0.04); }
.search-results { max-width: 600px; margin: 32px auto 0; padding-top: 24px; border-top: 1px solid var(--color-border); }

/* === Error Page === */
.error-code { font-size: 8rem; font-weight: 700; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; margin-bottom: 12px; }
.error-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 24px; }

/* === Page Section (alias) === */
.page-section { padding: 80px 0; }
.page-section:nth-child(even) { background: #f8fafc; }
.section-title { font-size: 1.8rem; text-align: center; margin-bottom: 8px; }
.section-subtitle { color: var(--color-text-light); text-align: center; margin-bottom: 40px; }
.page-subtitle { color: var(--color-text-light); font-size: 0.95rem; }

/* === Requirements === */
.requirements-list { list-style: none; padding: 0; }
.requirements-list li { padding: 8px 0; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; color: var(--color-text-light); }
.requirements-list li:last-child { border-bottom: none; }

/* === FAQ Extensions === */
.faq-category { padding: 8px 20px; border-radius: 20px; font-size: 0.9rem; font-weight: 500; color: var(--color-text-light); background: #fff; border: 1px solid var(--color-border); cursor: pointer; transition: all var(--transition); }
.faq-category:hover, .faq-category.active { color: var(--color-primary); border-color: var(--color-primary); background: rgba(26,86,219,0.04); }
.faq-contact { text-align: center; padding: 32px; background: #f8fafc; border-radius: 12px; margin-top: 40px; }
.faq-contact p { margin-bottom: 16px; }

/* === Utility === */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* === Stats Bar === */
.stats-bar { padding: 40px 0; background: #fff; border-bottom: 1px solid var(--color-border); }
.stats-bar-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stats-bar-item strong { display: block; font-size: 2rem; font-weight: 700; color: var(--color-primary); margin-bottom: 4px; }
.stats-bar-item span { font-size: 0.85rem; color: var(--color-text-light); }

/* === Advantages === */
.advantages-section { padding: 80px 0; background: #f8fafc; }
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.advantage-card { background: #fff; border-radius: 12px; padding: 32px 24px; text-align: center; border: 1px solid var(--color-border); transition: transform var(--transition), box-shadow var(--transition); }
.advantage-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.06); }
.advantage-icon { width: 56px; height: 56px; margin: 0 auto 16px; border-radius: 12px; display: flex; align-items: center; justify-content: center; }
.advantage-icon svg { width: 28px; height: 28px; }
.advantage-icon--blue { background: rgba(59,130,246,0.1); color: #3b82f6; }
.advantage-icon--cyan { background: rgba(6,182,212,0.1); color: #06b6d4; }
.advantage-icon--indigo { background: rgba(99,102,241,0.1); color: #6366f1; }
.advantage-icon--emerald { background: rgba(16,185,129,0.1); color: #10b981; }
.advantage-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.advantage-card p { font-size: 0.88rem; color: var(--color-text-light); line-height: 1.6; }

/* === About Preview (Home) === */
.about-preview { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-preview-img { position: relative; border-radius: 16px; overflow: hidden; }
.about-preview-img img { width: 100%; height: auto; display: block; }
.about-preview-img::after { content: ''; position: absolute; inset: 0; border-radius: 16px; box-shadow: inset 0 0 0 1px rgba(0,0,0,0.05); }
.about-preview-content h2 { font-size: 1.8rem; margin-bottom: 16px; }
.about-preview-content p { color: var(--color-text-light); line-height: 1.8; margin-bottom: 16px; }
.about-data { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--color-border); }
.about-data-item { text-align: center; }
.about-data-item strong { display: block; font-size: 1.5rem; font-weight: 700; color: var(--color-primary); }
.about-data-item span { font-size: 0.8rem; color: var(--color-text-light); }

/* === Download CTA === */
.download-cta { padding: 80px 0; background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%); position: relative; overflow: hidden; }
.download-cta::before { content: ''; position: absolute; top: -50%; right: -10%; width: 400px; height: 400px; background: radial-gradient(circle, rgba(6,182,212,0.15) 0%, transparent 70%); border-radius: 50%; }
.download-cta-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; position: relative; z-index: 1; }
.download-cta-text { color: #fff; }
.download-cta-text h2 { font-size: 2rem; margin-bottom: 12px; }
.download-cta-text p { color: rgba(255,255,255,0.7); margin-bottom: 28px; line-height: 1.7; }
.download-cta-text .download-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.download-cta-text .download-btns .btn { padding: 12px 24px; border-radius: 8px; font-weight: 500; }
.download-cta-visual { text-align: center; }
.download-cta-visual img { max-width: 320px; width: 100%; filter: drop-shadow(0 16px 40px rgba(0,0,0,0.3)); }
.download-meta { display: flex; gap: 24px; margin-top: 16px; font-size: 0.8rem; color: rgba(255,255,255,0.5); }

/* === About Page Sections === */
.about-hero-section { padding: 140px 0 80px; background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); text-align: center; color: #fff; }
.about-hero-section h1 { font-size: 2.5rem; margin-bottom: 16px; }
.about-hero-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }
.about-story { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.about-story-img img { width: 100%; border-radius: 12px; }
.about-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.about-value-card { padding: 28px; border-radius: 12px; border: 1px solid var(--color-border); background: #fff; }
.about-value-card h3 { font-size: 1rem; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.about-value-card h3 svg { width: 20px; height: 20px; color: var(--color-primary); }
.about-value-card p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }

/* === Product Cards Enhanced === */
.product-card-enhanced { display: flex; flex-direction: column; border-radius: 12px; overflow: hidden; background: #fff; border: 1px solid var(--color-border); transition: transform var(--transition), box-shadow var(--transition); }
.product-card-enhanced:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); }
.product-card-enhanced .card-img { height: 180px; overflow: hidden; background: linear-gradient(135deg, #f0f9ff, #e0f2fe); display: flex; align-items: center; justify-content: center; }
.product-card-enhanced .card-img img { width: 70%; height: auto; transition: transform 0.3s; }
.product-card-enhanced:hover .card-img img { transform: scale(1.05); }
.product-card-enhanced .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.product-card-enhanced h3 { font-size: 1.1rem; margin-bottom: 8px; }
.product-card-enhanced p { font-size: 0.88rem; color: var(--color-text-light); line-height: 1.6; flex: 1; }
.product-card-enhanced .card-link { margin-top: 12px; font-size: 0.85rem; color: var(--color-primary); font-weight: 500; }

/* === News Cards Enhanced === */
.news-list-item { display: grid; grid-template-columns: 240px 1fr; gap: 24px; padding: 24px; background: #fff; border-radius: 12px; border: 1px solid var(--color-border); transition: transform var(--transition), box-shadow var(--transition); margin-bottom: 20px; text-decoration: none; color: inherit; }
.news-list-item:last-child { margin-bottom: 0; }
.news-list-item.news-list-item--text { grid-template-columns: minmax(0, 1fr); }
.news-list-item:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.news-list-item .news-thumb { border-radius: 8px; overflow: hidden; height: 160px; }
.news-list-item .news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-list-item .news-body h2 { font-size: 1.1rem; margin-bottom: 8px; }
.news-list-item .news-body p { font-size: 0.88rem; color: var(--color-text-light); line-height: 1.6; }
.news-list-item .news-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 8px; }

/* === Contact Map === */
.contact-map { border-radius: 12px; overflow: hidden; background: linear-gradient(135deg, #f0f9ff, #e0f2fe); height: 280px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--color-border); }
.contact-map svg { width: 80px; height: 80px; color: var(--color-primary); opacity: 0.5; }
.contact-info-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.contact-info-card { padding: 20px; border-radius: 10px; background: #fff; border: 1px solid var(--color-border); }
.contact-info-card h2 { font-size: 0.85rem; color: var(--color-text-light); margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.contact-info-card h2 svg { width: 16px; height: 16px; color: var(--color-primary); }
.contact-info-card p { font-weight: 500; font-size: 0.95rem; }

/* Team cards */
.team-card { text-align: center; padding: 32px 20px; background: #fff; border: 1px solid var(--color-border); border-radius: 12px; transition: transform var(--transition), box-shadow var(--transition); }
.team-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.team-avatar { width: 80px; height: 80px; margin: 0 auto 16px; color: var(--color-primary); background: var(--color-primary-bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.team-avatar svg { width: 56px; height: 56px; }
.team-card h3 { font-size: 1.1rem; margin-bottom: 4px; }
.team-role { color: var(--color-primary); font-size: 0.85rem; font-weight: 500; margin-bottom: 8px; }
.team-bio { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.6; }

/* Partners grid */
.partners-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.partner-item { display: flex; align-items: center; justify-content: center; padding: 28px 20px; background: #fff; border: 1px solid var(--color-border); border-radius: 10px; transition: border-color var(--transition), box-shadow var(--transition); }
.partner-item:hover { border-color: var(--color-primary); box-shadow: 0 4px 16px rgba(0,0,0,0.04); }
.partner-name { font-weight: 500; font-size: 0.95rem; color: var(--color-text-light); letter-spacing: 0.5px; }

/* FAQ */
.faq-categories { margin-bottom: 40px; }
.faq-nav { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.faq-nav-item { padding: 8px 20px; border-radius: 20px; font-size: 0.9rem; font-weight: 500; color: var(--color-text-light); background: #fff; border: 1px solid var(--color-border); transition: all var(--transition); }
.faq-nav-item:hover, .faq-nav-item.active { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-bg); }
.faq-section { margin-bottom: 48px; }
.faq-section h2 { font-size: 1.4rem; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--color-primary-bg); }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: #fff; border: 1px solid var(--color-border); border-radius: 10px; overflow: hidden; transition: border-color var(--transition); }
.faq-item[open] { border-color: var(--color-primary); }
.faq-question { padding: 18px 24px; font-weight: 500; cursor: pointer; display: flex; align-items: center; justify-content: space-between; list-style: none; transition: background var(--transition); }
.faq-question:hover { background: var(--color-primary-bg); }
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after { content: "+"; font-size: 1.3rem; color: var(--color-primary); font-weight: 300; transition: transform 0.2s; }
.faq-item[open] .faq-question::after { transform: rotate(45deg); }
.faq-answer { padding: 0 24px 20px; color: var(--color-text); line-height: 1.8; }
.faq-answer ul, .faq-answer ol { padding-left: 20px; margin: 8px 0; }
.faq-answer li { margin-bottom: 6px; }
.faq-answer p { margin-bottom: 10px; }

/* Legal content */
.legal-content { max-width: 800px; margin: 0 auto; line-height: 1.8; }
.legal-intro { font-size: 1.05rem; color: var(--color-text); margin-bottom: 32px; padding: 20px; background: var(--color-primary-bg); border-radius: 10px; border-left: 4px solid var(--color-primary); }
.legal-content h2 { font-size: 1.3rem; margin-top: 40px; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--color-border); }
.legal-content h3 { font-size: 1.05rem; margin-top: 24px; margin-bottom: 10px; }
.legal-content ul, .legal-content ol { padding-left: 20px; margin-bottom: 16px; }
.legal-content li { margin-bottom: 8px; color: var(--color-text); }
.legal-content p { margin-bottom: 12px; color: var(--color-text); }

/* Form feedback */
.form-success { display: none; text-align: center; padding: 48px 24px; }
.form-success.active { display: block; }
.form-success-icon { width: 64px; height: 64px; margin: 0 auto 16px; color: #10b981; }
.form-success h3 { font-size: 1.3rem; margin-bottom: 8px; }
.form-success p { color: var(--color-text-light); }

@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .news-card-img img, .card-img img { transition: none; }
  .card, .news-card, .highlight-card { transition: none; transform: none; }
  .card:hover, .news-card:hover, .highlight-card:hover { transform: none; }
}

/* === Responsive === */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .feature-row { grid-template-columns: 1fr; gap: 32px; }
  .feature-row.reverse .feature-img { order: 0; }
  .feature-row.reverse .feature-content { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 540px; margin: 0 auto; }
  .features-showcase { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid .testimonial-card:last-child { grid-column: 1 / -1; max-width: 480px; margin: 0 auto; }
}

@media (max-width: 768px) {
  .main-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(255,255,255,0.98); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px; flex-direction: column; gap: 2px;
    box-shadow: var(--shadow-lg);
  }
  .main-nav.open { display: flex; }
  .mobile-toggle { display: flex; }
  /* 移动端三个纯图标控件的点击区补到 44×44。
     实测原尺寸：菜单按钮约 36×32（20px 图标 + 8px 内边距）、搜索 36×36、
     返回顶部 40×40，都小于百度移动落地页规范和各家可用性基线的 44×44。
     手指按不准就得按两次，这是移动端最直接的体验损失。
     用透明的 ::after 盖一层来扩大命中区，而不是把元素本身改大：可见图标尺寸、
     行内布局、四周间距全都不动，页面看上去和原版一模一样，只是能按到的范围变大了。
     ::after 是这些按钮/链接自己的子元素，点在上面照样触发它们本身。 */
  .mobile-toggle,
  .nav-search { position: relative; }
  .mobile-toggle::after,
  .nav-search::after,
  .back-to-top::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
  }
  .nav-dropdown .dropdown-menu { position: static; flex-basis: 100%; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; padding: 0 0 0 16px; display: none; backdrop-filter: none; }
  .nav-dropdown.open .dropdown-menu { display: block; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .form-row { grid-template-columns: 1fr; }
  .article-nav { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .page-header { padding: 100px 0 40px; }
  .platform-grid { grid-template-columns: 1fr; }
  .sub-nav-section { top: 68px; }
  .cta-section { padding: 60px 0; }
  .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat-item::after { display: none; }
  .features-showcase { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .testimonials-grid .testimonial-card:last-child { grid-column: auto; max-width: none; }
  .hero-split { padding: 120px 0 56px; }
  .hero-content h1 { font-size: 2rem; }
  .hero-float { display: none; }
  .hero-section { padding: 120px 0 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-text h1 { font-size: 2rem; }
  .hero-buttons { justify-content: center; }
  .hero-image img { max-width: 320px; }
  .hero-badge { display: none; }
  .stats-bar-inner { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .advantages-grid { grid-template-columns: 1fr; }
  .about-preview { grid-template-columns: 1fr; gap: 32px; }
  .about-data { grid-template-columns: repeat(3, 1fr); }
  .download-cta-inner { grid-template-columns: 1fr; text-align: center; }
  .download-cta-text .download-btns { justify-content: center; }
  .download-meta { justify-content: center; }
  .download-hero-inner { grid-template-columns: 1fr; }
  .about-story { grid-template-columns: 1fr; }
  .about-values { grid-template-columns: 1fr; }
  .news-list-item { grid-template-columns: 1fr; }
  .news-list-item .news-thumb { height: 180px; }
  .contact-info-cards { grid-template-columns: 1fr; }
  .about-hero-section { padding: 120px 0 60px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  h1 { font-size: 1.75rem; }
  .page-header { padding: 88px 0 32px; }
  .btn-lg { padding: 12px 24px; font-size: 0.9rem; }
  .hero-text h1 { font-size: 1.6rem; }
  .stats-bar-inner { grid-template-columns: 1fr 1fr; }
  .stats-bar-item strong { font-size: 1.5rem; }
}

/* 深色区块的标题修正。
   全局 h1..h6 的深色规则比区块上的 color:#fff 更具体，原稿里首屏、深色 CTA
   和关于页首屏的标题都被压成几乎看不见的深蓝。这里按区块补回白色，
   只改颜色，版式、字号、间距一律不动。 */
.hero-section h1,
.download-cta h2,
.about-hero-section h1 { color: #fff; }

/* 分页：原静态站没有分页，Z-Blog 需要。
   外观直接复用本主题的按钮类，这里只负责排布，不另定义一套按钮样式。 */
.pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}
.pagination .page-item {
  min-width: 44px;
  text-align: center;
}