:root {
  --c-bg: #FAFBFC;
  --c-surface: #FFFFFF;
  --c-surface-hover: #F7F9FC;
  --c-surface-elevated: #FFFFFF;
  --c-border: #E8ECF1;
  --c-border-strong: #D9DEE6;
  --c-border-subtle: #F0F3F7;
  --c-text: #1A1D23;
  --c-text-secondary: #5A6473;
  --c-text-tertiary: #8C96A3;
  --c-text-inverse: #FFFFFF;
  --c-brand: #2563EB;
  --c-brand-hover: #1E4FD9;
  --c-brand-light: #EEF4FF;
  --c-brand-pale: #F5F9FF;
  --c-accent: #F59E0B;
  --c-accent-light: #FFF7E6;
  --c-success: #10B981;
  --c-success-light: #ECFDF5;
  --c-danger: #EF4444;
  --c-danger-light: #FEF2F2;
  --r-xs: 6px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --r-full: 9999px;
  --sh-xs: 0 1px 2px rgba(20, 28, 42, 0.04);
  --sh-sm: 0 1px 3px rgba(20, 28, 42, 0.06), 0 1px 2px rgba(20, 28, 42, 0.04);
  --sh-md: 0 4px 12px rgba(20, 28, 42, 0.08);
  --sh-lg: 0 12px 32px rgba(20, 28, 42, 0.10);
  --sh-brand: 0 4px 14px rgba(37, 99, 235, 0.28);
  --sp-xs: 4px;
  --sp-sm: 8px;
  --sp-md: 16px;
  --sp-lg: 24px;
  --sp-xl: 32px;
  --sp-2xl: 48px;
  --sp-3xl: 80px;
  --max-w: 1200px;
  --header-h: 64px;
  --t-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --z-header: 40;
  --z-dropdown: 50;
  --z-modal: 60;
  --z-support: 45;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-bg);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--c-brand); }

img, video { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

/* ===== Reveal Animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--t-slow), transform var(--t-slow);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-header);
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: all var(--t-base);
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--c-border-subtle);
  box-shadow: var(--sh-xs);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--c-brand) 0%, #5B8FFF 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  box-shadow: var(--sh-brand);
}
.brand-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text-secondary);
  position: relative;
}
.nav-links a:hover { color: var(--c-text); }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-toggle { display: none; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--r-sm);
  transition: all var(--t-fast);
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--c-brand);
  color: #fff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.18);
}
.btn-primary:hover {
  background: var(--c-brand-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--sh-brand);
}
.btn-secondary {
  background: var(--c-surface);
  color: var(--c-text);
  border-color: var(--c-border);
}
.btn-secondary:hover {
  border-color: var(--c-brand);
  color: var(--c-brand);
  background: var(--c-brand-light);
}
.btn-ghost {
  padding: 8px 16px;
  color: var(--c-text-secondary);
}
.btn-ghost:hover { color: var(--c-text); background: var(--c-surface-hover); }
.btn-lg { padding: 14px 28px; font-size: 15px; }
.btn-sm { padding: 7px 16px; font-size: 13px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 72px) 0 80px;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(37, 99, 235, 0.06) 0%, transparent 60%),
    linear-gradient(180deg, var(--c-bg) 0%, #FFFFFF 100%);
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  animation: floatGlow 8s ease-in-out infinite;
}
@keyframes floatGlow {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(20px); }
}
.hero-content {
  position: relative;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--c-brand-light);
  color: var(--c-brand);
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-brand);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}
.hero h1 {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--c-text);
  margin-bottom: 20px;
}
.hero h1 .grad {
  background: linear-gradient(135deg, var(--c-brand) 0%, #7C9FFF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--c-text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-platforms {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.platform-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--c-text-secondary);
  transition: all var(--t-fast);
}
.platform-chip:hover {
  border-color: var(--c-brand);
  color: var(--c-brand);
  background: var(--c-brand-light);
  transform: translateY(-1px);
}
.platform-chip .icon {
  width: 16px; height: 16px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: #fff;
  font-weight: 700;
}
.icon-dy { background: linear-gradient(135deg, #000, #333); }
.icon-ks { background: linear-gradient(135deg, #FF4906, #FF7A00); }
.icon-xhs { background: linear-gradient(135deg, #FF2442, #FF6B81); }
.icon-sph { background: linear-gradient(135deg, #07C160, #08C758); }
.icon-bili { background: linear-gradient(135deg, #00A1D6, #23ADE5); }

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 56px;
  text-align: center;
}
.stat .num {
  font-size: 36px;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 6px;
}
.stat .label {
  font-size: 14px;
  color: var(--c-text-tertiary);
}

/* ===== Banner Section ===== */
.banner-section {
  padding: var(--sp-xl) 0;
}
.banner-carousel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--sp-md);
}
.banner-item {
  position: relative;
  display: block;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-sm);
  transition: transform var(--t-base), box-shadow var(--t-base);
}
.banner-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh-md);
}
.banner-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 7;
  display: block;
}
.banner-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--sp-md) var(--sp-lg);
  background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
  color: #fff;
  font-size: 15px;
  font-weight: 500;
}

/* ===== Section ===== */
.section {
  padding: var(--sp-3xl) 0;
}
.section + .section { padding-top: 0; }
.section-alt {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border-subtle);
  border-bottom: 1px solid var(--c-border-subtle);
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-brand);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--c-text);
  margin-bottom: 12px;
}
.section-desc {
  font-size: 16px;
  color: var(--c-text-secondary);
  line-height: 1.7;
}

/* ===== Platforms Section ===== */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.platform-card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: all var(--t-base);
  overflow: hidden;
}
.platform-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--platform-color, var(--c-brand));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-base);
}
.platform-card:hover {
  border-color: var(--platform-color, var(--c-brand));
  box-shadow: var(--sh-md);
  transform: translateY(-2px);
}
.platform-card:hover::before { transform: scaleX(1); }
.platform-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.platform-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  background: var(--platform-color, var(--c-brand));
  flex-shrink: 0;
}
.platform-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 4px;
}
.platform-card .count {
  font-size: 13px;
  color: var(--c-text-tertiary);
}
.platform-card p {
  font-size: 14px;
  color: var(--c-text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}
.platform-features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.platform-features span {
  font-size: 12px;
  padding: 4px 10px;
  background: var(--c-surface-hover);
  border-radius: var(--r-full);
  color: var(--c-text-secondary);
}

/* ===== Category Tabs ===== */
.tabs-wrap {
  margin-bottom: 32px;
}
.category-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 4px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  max-width: fit-content;
  margin: 0 auto;
}
.tab-btn {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text-secondary);
  border-radius: var(--r-full);
  transition: all var(--t-fast);
  cursor: pointer;
}
.tab-btn:hover { color: var(--c-text); }
.tab-btn.active {
  background: var(--c-brand);
  color: #fff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.2);
}

/* ===== Product Grid ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.product-card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all var(--t-base);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  border-color: var(--c-brand);
  box-shadow: var(--sh-lg);
  transform: translateY(-4px);
}
.product-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--c-surface-hover) 0%, var(--c-bg) 100%);
  overflow: hidden;
}
.product-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}
.product-card:hover .product-media img { transform: scale(1.05); }
.product-badge {
  position: absolute;
  top: 12px; left: 12px;
  padding: 4px 10px;
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-accent) 0%, #FBBF24 100%);
  color: #fff;
  z-index: 2;
}
.product-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.product-cat {
  font-size: 12px;
  color: var(--c-text-tertiary);
  font-weight: 500;
}
.product-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-summary {
  font-size: 13px;
  color: var(--c-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.product-tags span {
  font-size: 11px;
  padding: 3px 8px;
  background: var(--c-brand-light);
  color: var(--c-brand);
  border-radius: var(--r-xs);
  font-weight: 500;
}
.product-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--c-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.product-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
}
.product-price .period {
  font-size: 12px;
  font-weight: 500;
  color: var(--c-text-tertiary);
}
.product-btn {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--r-xs);
  background: var(--c-brand-light);
  color: var(--c-brand);
  transition: all var(--t-fast);
}
.product-card:hover .product-btn {
  background: var(--c-brand);
  color: #fff;
}

/* ===== Workflow Section ===== */
.workflow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.step {
  text-align: center;
  padding: 32px 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  transition: all var(--t-base);
}
.step:hover {
  border-color: var(--c-brand);
  box-shadow: var(--sh-md);
  transform: translateY(-2px);
}
.step-num {
  width: 40px; height: 40px;
  border-radius: var(--r-full);
  background: linear-gradient(135deg, var(--c-brand) 0%, #5B8FFF 100%);
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: var(--sh-brand);
}
.step h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 8px;
}
.step p {
  font-size: 13px;
  color: var(--c-text-secondary);
  line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: var(--sp-3xl) 0;
}
.cta-panel {
  position: relative;
  background: linear-gradient(135deg, var(--c-brand) 0%, #4F7CFF 100%);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  color: #fff;
  overflow: hidden;
}
.cta-panel::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}
.cta-panel::after {
  content: '';
  position: absolute;
  bottom: -50%; left: -10%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
  pointer-events: none;
}
.cta-panel h2 {
  position: relative;
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.cta-panel p {
  position: relative;
  font-size: 16px;
  opacity: 0.9;
  max-width: 480px;
  margin: 0 auto 28px;
}
.cta-actions {
  position: relative;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-actions .btn-primary {
  background: #fff;
  color: var(--c-brand);
}
.cta-actions .btn-primary:hover {
  background: #F5F5F5;
  color: var(--c-brand-hover);
}
.cta-actions .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
.cta-actions .btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  color: #fff;
}

/* ===== Support Widget ===== */
.support-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: var(--z-support);
}
.support-btn {
  width: 56px; height: 56px;
  border-radius: var(--r-full);
  background: linear-gradient(135deg, var(--c-brand) 0%, #5B8FFF 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--sh-brand);
  cursor: pointer;
  transition: all var(--t-base);
  position: relative;
  z-index: 2;
}
.support-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}
.support-btn svg { width: 24px; height: 24px; }
.support-panel {
  position: absolute;
  right: 0;
  bottom: 68px;
  width: 300px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-lg);
  overflow: hidden;
  transform: translateY(12px) scale(0.96);
  opacity: 0;
  visibility: hidden;
  transition: all var(--t-base);
  transform-origin: bottom right;
}
.support-panel.open {
  transform: translateY(0) scale(1);
  opacity: 1;
  visibility: visible;
}
.support-head {
  padding: 16px 20px;
  background: linear-gradient(135deg, var(--c-brand) 0%, #4F7CFF 100%);
  color: #fff;
}
.support-head h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 2px;
}
.support-head p {
  font-size: 12px;
  opacity: 0.85;
}
.support-body {
  padding: 16px;
}
.support-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  transition: background var(--t-fast);
  cursor: pointer;
}
.support-item:hover { background: var(--c-surface-hover); }
.support-item .si-icon {
  width: 36px; height: 36px;
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  background: var(--c-brand-light);
  color: var(--c-brand);
  flex-shrink: 0;
}
.support-item .si-info { flex: 1; min-width: 0; }
.support-item .si-label {
  font-size: 12px;
  color: var(--c-text-tertiary);
}
.support-item .si-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
}
.support-hours {
  margin-top: 12px;
  padding: 10px;
  background: var(--c-surface-hover);
  border-radius: var(--r-sm);
  text-align: center;
  font-size: 12px;
  color: var(--c-text-secondary);
}

/* ===== Footer ===== */
.site-footer {
  background: #0F1218;
  color: rgba(255,255,255,0.7);
  padding: 64px 0 24px;
  margin-top: var(--sp-3xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .brand-name {
  color: #fff;
  font-size: 18px;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.6;
  opacity: 0.6;
  max-width: 280px;
}
.footer-col h5 {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: 13px;
  opacity: 0.6;
  transition: opacity var(--t-fast);
}
.footer-col a:hover { opacity: 1; color: #fff; }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  opacity: 0.5;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .platforms-grid { grid-template-columns: repeat(2, 1fr); }
  .workflow-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  :root { --sp-lg: 16px; --header-h: 56px; --sp-3xl: 48px; }
  .nav-links, .nav-cta .btn-secondary { display: none; }
  .nav-toggle {
    display: flex;
    width: 40px; height: 40px;
    align-items: center; justify-content: center;
  }
  .hero { padding-top: calc(var(--header-h) + 48px); }
  .hero-stats { gap: 32px; }
  .stat .num { font-size: 28px; }
  .platforms-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .workflow-steps { grid-template-columns: 1fr; }
  .cta-panel { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .support-float { right: 16px; bottom: 16px; }
  .support-panel { width: calc(100vw - 32px); max-width: 320px; }
  .category-tabs {
    border-radius: var(--r-lg);
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    flex-direction: column;
    gap: 20px;
    align-items: center;
  }
}