/* ==========================================================================
   PARICH HARDWARE COMMAND CENTER DESIGN SYSTEM
   ========================================================================== */
:root {
  --bg-main: #07090e;
  --bg-surface: #0e131f;
  --bg-card: #141b2a;
  --bg-card-hover: #1c263b;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 225, 255, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-cyan: #00e1ff;
  --accent-blue: #2563eb;
  --accent-green: #10b981;
  --accent-gradient: linear-gradient(135deg, #00e1ff 0%, #2563eb 100%);

  --font-sans: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --container-width: 1280px;
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;

  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 锁定滚动 */
body.menu-open {
  overflow: hidden !important;
  height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ==========================================================================
   HEADER & MOBILE DRAWER (FIXED Z-INDEX POSITIONING)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 9, 14, 0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

.header-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1001; /* 保证顶栏及汉堡图标永远处于最顶层 */
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-logo {
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: 1.2rem;
  letter-spacing: 2px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-divider { color: var(--text-muted); }
.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.desktop-nav {
  display: flex;
  gap: 1.5rem;
}

.desktop-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.desktop-nav a:hover { color: var(--accent-cyan); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.08);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1002;
}

.mobile-toggle .bar {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.mobile-toggle.is-active .bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-toggle.is-active .bar:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.is-active .bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Drawer Overlay - Fixed Position */
.mobile-drawer {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(7, 9, 14, 0.98);
  backdrop-filter: blur(20px);
  padding: 5.5rem 1.5rem 2rem 1.5rem;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-10px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  overflow-y: auto;
}

.mobile-drawer.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mobile-link {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
  display: block;
}

.mobile-cta {
  margin-top: 1rem;
  width: 100%;
  text-align: center;
}

/* ==========================================================================
   BUTTONS & COMMON UI
   ========================================================================== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
}

.button.primary {
  background: var(--accent-gradient);
  color: #000;
  font-weight: 700;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.button.sm { padding: 0.45rem 0.85rem; font-size: 0.8rem; }
.button.lg { padding: 1rem 2rem; font-size: 1rem; }

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  letter-spacing: 1.5px;
  display: block;
  margin-bottom: 0.5rem;
}

.section {
  padding: 4.5rem 1.25rem;
  max-width: var(--container-width);
  margin: 0 auto;
}

.section.dark-bg {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

.section-lead {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 680px;
  margin-top: 0.5rem;
  margin-bottom: 2rem;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  letter-spacing: 1px;
  display: block;
  margin-bottom: 0.75rem;
}

/* ==========================================================================
   HERO BENTO GRID
   ========================================================================== */
.hero-bento {
  padding: 2rem 1.25rem 3rem;
  max-width: var(--container-width);
  margin: 0 auto;
}

.bento-container {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.25rem;
}

.bento-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
}

.hero-main {
  grid-column: 1 / 2;
  grid-row: 1 / 2;
}

.hero-main h1 {
  font-size: 2.25rem;
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.hero-main p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 1.75rem;
}

.hero-cta-group {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.hero-telemetry {
  grid-column: 2 / 3;
  grid-row: 1 / 2;
  background: var(--bg-card);
}

.telemetry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.mono-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: rgba(0, 225, 255, 0.1);
  color: var(--accent-cyan);
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
}

.metrics-bento-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.m-item {
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.04);
  padding: 0.85rem;
  border-radius: var(--radius-sm);
}

.m-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  display: block;
}

.m-val {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.m-val.highlight { color: var(--accent-cyan); }

.m-sub {
  font-size: 0.7rem;
  color: var(--text-secondary);
  display: block;
}

.hero-visual {
  grid-column: 1 / 2;
  grid-row: 2 / 3;
  padding: 0;
  min-height: 240px;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overlay-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(7,9,14,0.95), transparent);
  padding: 1.25rem;
}

.overlay-caption strong { font-size: 0.95rem; display: block;}
.overlay-caption span { font-size: 0.75rem; color: var(--text-secondary); }

.hero-capabilities {
  grid-column: 2 / 3;
  grid-row: 2 / 3;
}

.cap-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cap-pills span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  color: var(--text-secondary);
}

/* ==========================================================================
   ARCHITECTURE SECTION
   ========================================================================== */
.section-header-inline {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.section-header-inline p {
  color: var(--text-secondary);
  max-width: 480px;
  font-size: 0.9rem;
}

.arch-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.arch-nav {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.arch-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  display: flex;
  gap: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.arch-item.active, .arch-item:hover {
  border-color: var(--border-active);
  background: var(--bg-card);
}

.arch-num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-cyan);
}

.arch-item h3 { font-size: 1rem; margin-bottom: 0.2rem; }
.arch-item p { color: var(--text-secondary); font-size: 0.8rem; }

.arch-display {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
}

.box-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-cyan);
  margin-bottom: 0.85rem;
  display: block;
}

.display-box h3 { font-size: 1.5rem; margin-bottom: 0.85rem; }
.display-box p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 1.25rem; }

.spec-highlights {
  list-style: none;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.spec-highlights li { font-size: 0.8rem; color: var(--text-primary); }
.spec-highlights span { color: var(--text-muted); font-family: var(--font-mono); margin-right: 0.4rem; }

/* ==========================================================================
   HARDWARE & CONTAINERS
   ========================================================================== */
.product-banner {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1.5rem;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.banner-media img { width: 100%; height: 100%; object-fit: cover; }
.banner-content { padding: 2rem 2rem 2rem 0; }

.product-type {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-cyan);
  margin-bottom: 0.4rem;
  display: block;
}

.banner-content h3 { font-size: 1.75rem; margin-bottom: 0.85rem; }
.banner-content p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 1.5rem; }

.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
}

.tech-cell .label { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-muted); display: block; }
.tech-cell .value { font-size: 0.8rem; color: var(--text-primary); }

.hardware-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.hw-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.hw-img img { width: 100%; height: 200px; object-fit: cover; }
.hw-info { padding: 1.5rem; }
.hw-info h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.hw-info p { color: var(--text-secondary); font-size: 0.85rem; margin-bottom: 1rem; }

.feature-bullets { list-style: none; }
.feature-bullets li {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
  position: relative;
  padding-left: 1rem;
}
.feature-bullets li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
}

/* Container DC */
.container-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.spec-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.sm-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: var(--radius-sm);
}

.sm-box strong { font-family: var(--font-mono); font-size: 1.25rem; color: var(--accent-cyan); display: block; }
.sm-box span { font-size: 0.75rem; color: var(--text-muted); }

.cs-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  border-left: 2px solid var(--accent-cyan);
  padding-left: 0.85rem;
}

/* Compute Grid */
.compute-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.compute-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-md);
}

.c-icon {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  background: rgba(0, 225, 255, 0.08);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  margin-bottom: 0.85rem;
}

.compute-card h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.compute-card p { color: var(--text-secondary); font-size: 0.85rem; }

/* Pipeline Tracker */
.pipeline-tracker {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.85rem;
  margin-top: 2rem;
}

.p-step { display: flex; flex-direction: column; }
.p-head { display: flex; align-items: center; margin-bottom: 0.75rem; }

.p-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: #000;
  background: var(--accent-cyan);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.p-line { height: 2px; background: var(--border-color); flex-grow: 1; margin-left: 0.4rem; }
.p-step:last-child .p-line { display: none; }
.p-step h4 { font-size: 0.85rem; margin-bottom: 0.3rem; }
.p-step p { color: var(--text-muted); font-size: 0.75rem; }

/* Cases */
.cases-masonry {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.case-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.case-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.location { color: var(--accent-cyan); }
.gpu-count { color: var(--text-muted); }
.case-box h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
.case-box p { color: var(--text-secondary); font-size: 0.85rem; }

/* Contact Command Card */
.contact-wrap {
  max-width: var(--container-width);
  margin: 3rem auto 4rem;
  padding: 0 1.25rem;
}

.command-card {
  background: linear-gradient(135deg, #0e1420 0%, #172133 100%);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: 3rem 1.5rem;
  text-align: center;
}

.cc-badge { font-family: var(--font-mono); font-size: 0.75rem; color: var(--accent-cyan); margin-bottom: 0.75rem; }
.command-card h2 { font-size: 2rem; margin-bottom: 0.85rem; }
.command-card p { color: var(--text-secondary); max-width: 600px; margin: 0 auto 1.5rem; font-size: 0.95rem; }
.cc-actions { margin-bottom: 1.5rem; }

.cc-footer-note {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 1.25rem 2.5rem;
  background: #040608;
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
}

.footer-brand-col p {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 0.5rem;
  max-width: 320px;
}

.footer-links-col {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1.25rem;
}

.footer-nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}

.copyright {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* ==========================================================================
   BREAKPOINTS: RESPONSIVE FINE-TUNING
   ========================================================================== */
@media (max-width: 1024px) {
  .desktop-nav { display: none; }
  .mobile-toggle { display: flex; }
  .hide-mobile { display: none; }

  .bento-container {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .hero-main, .hero-telemetry, .hero-visual, .hero-capabilities {
    grid-column: 1 / 2;
    grid-row: auto;
  }

  .arch-split, .container-showcase { grid-template-columns: 1fr; }
  
  .product-banner {
    grid-template-columns: 1fr;
  }
  
  .banner-content { padding: 1.5rem; }
  .banner-media img { height: 220px; }

  .pipeline-tracker {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

@media (max-width: 640px) {
  .section-header-inline {
    flex-direction: column;
    align-items: flex-start;
  }

  /* 调整 Hero 区域标题大小，防止重叠打架 */
  .hero-bento {
    padding-top: 1rem;
  }

  .hero-main h1 {
    font-size: 1.5rem !important;
    line-height: 1.25;
    margin-bottom: 0.75rem;
  }

  .hero-main p {
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1.25rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
  }

  .hero-cta-group .button {
    width: 100%;
    text-align: center;
  }

  .command-card h2 { font-size: 1.4rem; }

  .metrics-bento-grid, 
  .hardware-split, 
  .compute-grid, 
  .cases-masonry {
    grid-template-columns: 1fr;
  }

  /* Adaptive Vertical Pipeline */
  .pipeline-tracker {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .p-step {
    border-left: 2px solid var(--accent-cyan);
    padding-left: 1rem;
    position: relative;
  }

  .p-head { margin-bottom: 0.25rem; }
  .p-line { display: none; }
  .p-num {
    position: absolute;
    left: -13px;
    top: 0;
    width: 24px;
    height: 24px;
  }

  /* Footer Mobile Refinement */
  .footer-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.75rem;
  }

  .footer-links-col {
    align-items: flex-start;
    width: 100%;
  }

  .footer-nav {
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
  }

  .footer-nav a {
    width: 100%;
    padding: 0.4rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.03);
  }

  .cc-footer-note .divider-dot { display: none; }
  .cc-footer-note span { display: block; width: 100%; }
}