/* ===== Design Tokens ===== */
:root {
  --color-primary: #0056FF;
  --color-primary-rgb: 0, 86, 255;
  --color-primary-light: rgba(0, 86, 255, 0.08);
  --color-primary-glow: rgba(0, 86, 255, 0.35);
  --color-secondary: #1A1A2E;
  --color-bg: #F9F9F9;
  --color-surface: #FFFFFF;
  --color-text: #1A1A2E;
  --color-muted: #6B7280;
  --color-border: #E5E7EB;
  --color-success: #10B981;
  --color-error: #EF4444;

  --font-heading: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Courier New', monospace;

  --section-gap: 120px;
  --container-max: 1500px;
  --container-padding: 40px;
  --grid-gap: 24px;
  --grid-gap-lg: 32px;

  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.06), 0 12px 24px rgba(0,0,0,0.08);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 200ms;
  --duration-base: 300ms;
  --duration-slow: 600ms;

  --radius-sm: 2px;
  --radius-base: 4px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}
a:hover { color: var(--color-secondary); }
a:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

ul, ol { list-style: none; }

/* ===== Typography ===== */
.heading-display {
  font-family: var(--font-heading);
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-secondary);
}

.heading-xl {
  font-family: var(--font-heading);
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.heading-lg {
  font-family: var(--font-heading);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.heading-md {
  font-family: var(--font-heading);
  font-size: clamp(20px, 2vw, 24px);
  font-weight: 600;
  line-height: 1.3;
}

.heading-sm {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.text-body { font-size: 16px; line-height: 1.6; }
.text-muted { color: var(--color-muted); }
.text-mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.02em; }

/* ===== Layout ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--section-gap) 0;
  position: relative;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  text-decoration: none;
  position: relative;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  animation: breathe 3s ease-in-out infinite;
}
.btn-primary:hover {
  background: #0047d4;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(var(--color-primary-rgb), 0.4);
  color: #fff;
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.btn-outline {
  background: transparent;
  color: var(--color-secondary);
  border: 1px solid var(--color-border);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  padding: 8px 0;
}
.btn-ghost:hover { color: var(--color-secondary); }
.btn-ghost .btn-arrow {
  transition: transform var(--duration-base) var(--ease-out);
}
.btn-ghost:hover .btn-arrow { transform: translateX(4px); }

@keyframes breathe {
  0%, 100% { box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0.3); }
  50% { box-shadow: 0 0 0 12px rgba(var(--color-primary-rgb), 0); }
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(249, 249, 249, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--duration-base) var(--ease-out);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.logo {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo-img {
  height: 43px;
  width: auto;
  display: block;
}

.main-nav { display: flex; align-items: center; gap: 32px; }

.main-nav a {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--duration-base) var(--ease-out);
}

.main-nav a:hover,
.main-nav a.active { color: var(--color-secondary); }
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }

.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.nav-arrow {
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-dropdown:hover .nav-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(28px);
  min-width: 220px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-fast) var(--ease-out);
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(20px);
}

.nav-dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-muted);
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-out);
}

.nav-dropdown-menu a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav-dropdown-menu a::after {
  display: none;
}

.header-cta {
  padding: 10px 24px;
  font-size: 13px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-secondary);
  transition: all var(--duration-base) var(--ease-out);
  border-radius: 1px;
}

.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
  background-image: url('../images/sybanner.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10,15,30,0.85) 0%, rgba(10,15,30,0.6) 50%, rgba(10,15,30,0.4) 100%);
  z-index: 1;
  pointer-events: none;
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 72px);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  position: relative;
  z-index: 3;
}

.hero-content {
  padding: 60px 0;
  position: relative;
  z-index: 2;
  max-width: 700px;
  text-align: center;
  overflow-wrap: break-word;
  word-wrap: break-word;
  hyphens: auto;
}

/* Ensure heading doesn't overflow */
.heading-display {
  word-break: break-word;
  overflow-wrap: break-word;
}

/* Blueprint background grid extends full width */
.hero::before {
  content: '';
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(0,86,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,86,255,0.05) 1px, transparent 1px);
  background-size: 100px 100px;
  z-index: 2;
  pointer-events: none;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: #60A5FA;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 32px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero-tag-wrapper {
  display: flex;
  justify-content: center;
}

.hero-tag::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-primary);
}

.hero-title {
  color: #FFFFFF;
  margin-bottom: 24px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s var(--ease-out) 0.4s forwards;
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255,255,255,0.8);
  max-width: 560px;
  margin: 0 auto 48px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s var(--ease-out) 0.6s forwards;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s var(--ease-out) 0.8s forwards;
}

.hero-actions .btn-primary {
  background: #FFFFFF;
  color: #0A0F1E;
  font-weight: 700;
  border: none;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.hero-actions .btn-primary:hover {
  background: #E8E8E8;
  color: #0A0F1E;
  box-shadow: 0 6px 28px rgba(0,0,0,0.6);
}

.hero-actions .btn-ghost {
  color: #FFFFFF;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 2px solid rgba(255,255,255,0.8);
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.hero-actions .btn-ghost:hover {
  color: #FFFFFF;
  background: rgba(255,255,255,0.25);
  border-color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.1em;
  opacity: 0;
  animation: fadeIn 1s var(--ease-out) 1.5s forwards;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.3; transform: scaleY(0.6); }
}

.section-header {
  margin-bottom: 64px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-tag::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--color-primary);
}

.section-title {
  margin-bottom: 16px;
}

.section-desc {
  font-size: 17px;
  color: var(--color-muted);
  max-width: 560px;
  line-height: 1.7;
}

/* ===== Products Section ===== */
.products-section {
  background: var(--color-bg);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
}

.products-grid-featured {
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: var(--grid-gap);
  min-height: 520px;
}

.products-grid-three {
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.product-card:hover {
  text-decoration: none;
  color: inherit;
}

.products-grid-featured .product-card.featured {
  grid-row: 1 / 3;
}

.products-grid-featured .product-card.featured .product-card-img {
  flex: 1;
}

.products-grid-featured .product-card.featured .product-card-body {
  padding: 32px;
}

.products-grid-featured .product-card.featured .product-card-title {
  font-size: 24px;
}

.product-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.3);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.product-card-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.product-card:hover .product-card-img img {
  transform: scale(1.03);
}

.product-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.product-card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-secondary);
}

.product-card-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.product-card-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--duration-base) var(--ease-out);
  margin-top: auto;
}

.product-card:hover .product-card-link { gap: 10px; }

/* ===== Products Grid Numbered (方案B: 大号序号卡片) ===== */
.products-grid-numbered {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.product-number-card {
  position: relative;
  height: 520px;
  border-radius: var(--radius-base);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: all var(--duration-base) var(--ease-out);
}

.product-number-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.product-number-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.product-number-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.product-number-card:hover .product-number-bg img {
  transform: scale(1.08);
}

.product-number-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to top,
    rgba(15, 23, 42, 0.95) 0%,
    rgba(15, 23, 42, 0.85) 30%,
    rgba(15, 23, 42, 0.6) 60%,
    rgba(15, 23, 42, 0.3) 100%
  );
  transition: all var(--duration-base) var(--ease-out);
}

.product-number-card:hover .product-number-overlay {
  background: linear-gradient(
    to top,
    rgba(15, 23, 42, 0.9) 0%,
    rgba(15, 23, 42, 0.75) 30%,
    rgba(15, 23, 42, 0.5) 60%,
    rgba(15, 23, 42, 0.2) 100%
  );
}

.product-number-content {
  position: relative;
  z-index: 2;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.product-number {
  font-family: var(--font-mono);
  font-size: 120px;
  font-weight: 800;
  line-height: 1;
  color: rgba(255, 255, 255, 0.08);
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 0;
  pointer-events: none;
  transition: all var(--duration-base) var(--ease-out);
}

.product-number-card:hover .product-number {
  color: rgba(255, 255, 255, 0.15);
}

.product-number-content .product-card-tag {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.product-number-content .product-card-title {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.product-number-content .product-card-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
  overflow-y: auto;
  position: relative;
  z-index: 1;
}

.product-number-content .product-card-desc::-webkit-scrollbar {
  width: 4px;
}

.product-number-content .product-card-desc::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
}

.product-number-content .product-card-desc::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
}

.product-number-content .product-card-link {
  color: #ffffff;
  font-size: 13px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--duration-base) var(--ease-out);
  position: relative;
  z-index: 1;
  margin-top: auto;
}

.product-number-card:hover .product-card-link {
  gap: 10px;
}

/* ===== Capability Section ===== */
.capability {
  position: relative;
  min-height: 750px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 0;
}

.capability-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.capability-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.6) contrast(1.1) brightness(0.3);
}

.capability-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26, 26, 46, 0.95) 0%,
    rgba(26, 26, 46, 0.7) 50%,
    rgba(0, 86, 255, 0.3) 100%
  );
}

.capability-content {
  position: relative;
  z-index: 1;
  padding: 120px var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: end;
}

.capability-left .section-tag {
  color: rgba(255,255,255,0.5);
}
.capability-left .section-tag::before {
  background: rgba(255,255,255,0.3);
}

.capability-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 24px;
}

.capability-text {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.7);
  max-width: 480px;
}

.capability-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding-bottom: 8px;
}

.stat-item {
  border-left: 2px solid var(--color-primary);
  padding-left: 20px;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
  transition: transform 0.3s ease;
}

.stat-item:hover .stat-number {
  transform: scale(1.05);
}

.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.5;
}

/* ===== Trust Section ===== */
.trust {
  background: linear-gradient(135deg, #F0F4FF 0%, #E8EEFF 40%, #F5F7FF 70%, #EEF2FF 100%);
  position: relative;
  overflow: hidden;
}

.trust::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 50%, rgba(0,86,255,0.06) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(0,86,255,0.04) 0%, transparent 50%);
  pointer-events: none;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}

.trust-item {
  padding: 40px 28px;
  text-align: center;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(0,86,255,0.06);
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out), background var(--duration-base) var(--ease-out);
}

.trust-item:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.9);
  box-shadow: 0 12px 32px rgba(0,86,255,0.12);
}

.trust-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,86,255,0.08);
  border: 1px solid rgba(0,86,255,0.15);
  border-radius: 16px;
  color: #0056FF;
  transition: background var(--duration-base) var(--ease-out);
}

.trust-item:hover .trust-icon {
  background: rgba(0,86,255,0.14);
}

.trust-item-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #1A1A2E;
}

.trust-item-desc {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
}

.trust .section-tag {
  color: #0056FF;
}

.trust .section-tag::before {
  background: #0056FF;
}

.trust .section-title {
  color: #1A1A2E;
}

/* ===== News Section ===== */
.news-section {
  background: var(--color-bg);
}

.news-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 48px;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}

.news-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  overflow: hidden;
  transition: all var(--duration-base) var(--ease-out);
}

.news-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.3);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.news-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.news-card:hover .news-card-img img {
  transform: scale(1.03);
}

.news-card-body {
  padding: 24px;
}

.news-card-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.news-card-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--color-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-excerpt {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Final CTA ===== */
.final-cta {
  background: linear-gradient(135deg, rgba(10,15,30,0.88) 0%, rgba(10,20,40,0.82) 100%),
              url('../images/hero-bg.jpg') center/cover no-repeat;
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,86,255,0.12), transparent 70%);
  pointer-events: none;
}

.final-cta-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
}

.final-cta-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.final-cta .btn-primary {
  position: relative;
  font-size: 16px;
  padding: 16px 40px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-secondary);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 64px 0 0;
  color: rgba(255,255,255,0.5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand-desc {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 16px;
  color: rgba(255,255,255,0.4);
  max-width: 320px;
}

.footer-heading {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.4);
  padding: 4px 0;
  transition: color var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.footer-links a:hover { color: rgba(255,255,255,0.8); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.footer-logo {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.footer-logo .logo-img {
  height: 32px;
  width: auto;
  display: block;
}

/* ===== Animations ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== Mobile Nav (hidden on desktop) ===== */
.mobile-nav {
  display: none;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root {
    --section-gap: 80px;
    --container-padding: 24px;
  }

  .hero {
    min-height: auto;
    padding-top: 72px;
  }

  .hero-content {
    padding: 60px var(--container-padding) 40px;
  }

  .products-grid {
    grid-template-columns: 1fr 1fr;
  }

  .products-grid-featured {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    min-height: auto;
  }

  .products-grid-featured .product-card.featured {
    grid-column: 1 / 3;
    grid-row: auto;
  }

  .products-grid-featured .product-card.featured .product-card-img {
    aspect-ratio: 16/9;
  }

  .products-grid-three {
    grid-template-columns: 1fr 1fr;
  }

  .products-grid-numbered {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .product-number-card {
    height: 480px;
  }

  .product-number {
    font-size: 100px;
  }

  .capability-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .trust-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .news-grid {
    grid-template-columns: 1fr 1fr;
  }

  .news-card:last-child { display: none; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 60px;
    --container-padding: 20px;
    --grid-gap: 16px;
  }

  .main-nav { display: none; }
  .header-cta { display: none; }
  .menu-toggle { display: flex; }

  .mobile-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(249, 249, 249, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    padding: 40px var(--container-padding);
    gap: 0;
    transform: translateX(100%);
    transition: transform var(--duration-base) var(--ease-out);
    z-index: 999;
  }

  .mobile-nav.open { transform: translateX(0); }

  .mobile-nav a {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-secondary);
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    text-decoration: none;
  }

  .mobile-nav .btn {
    margin-top: 24px;
    text-align: center;
    justify-content: center;
  }

  .mobile-nav-group {
    display: flex;
    flex-direction: column;
  }

  .mobile-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 18px;
    font-weight: 500;
    color: var(--color-secondary);
    padding: 16px 0;
    border: none;
    border-bottom: 1px solid var(--color-border);
    background: none;
    cursor: pointer;
    font-family: var(--font-body);
    text-align: left;
    width: 100%;
  }

  .mobile-nav-toggle .nav-arrow {
    transition: transform var(--duration-base) var(--ease-out);
  }

  .mobile-nav-group.open .mobile-nav-toggle .nav-arrow {
    transform: rotate(180deg);
  }

  .mobile-nav-sub {
    display: none;
    flex-direction: column;
    padding: 0 0 8px 16px;
  }

  .mobile-nav-group.open .mobile-nav-sub {
    display: flex;
  }

  .mobile-nav-sub a {
    font-size: 15px;
    padding: 12px 0;
    color: var(--color-muted);
    border-bottom: 1px solid var(--color-border);
  }

  .mobile-nav-sub a:last-child {
    border-bottom: none;
  }

  .hero-content {
    padding: 40px var(--container-padding) 24px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .products-grid-featured {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    min-height: auto;
  }

  .products-grid-featured .product-card.featured {
    grid-column: auto;
    grid-row: auto;
  }

  .products-grid-three {
    grid-template-columns: 1fr;
  }

  .products-grid-numbered {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .product-number-card {
    height: 440px;
  }

  .product-number {
    font-size: 80px;
    top: 16px;
    right: 16px;
  }

  .product-number-content {
    padding: 24px 20px;
  }

  .product-number-content .product-card-title {
    font-size: 18px;
  }

  .product-number-content .product-card-desc {
    font-size: 12px;
  }

  .capability {
    min-height: 500px;
  }

  .capability-content {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 60px var(--container-padding);
  }

  .capability-stats {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .stat-number { font-size: 32px; }

  .trust-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .news-card:last-child { display: block; }

  .news-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .products-grid-numbered {
    grid-template-columns: 1fr;
  }

  .product-number-card {
    height: 400px;
  }

  .product-number {
    font-size: 70px;
  }
}

/* ===== Page Hero ===== */
.page-hero {
  padding: 160px 0 100px;
  background-image: url('../images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  border-bottom: none;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,15,30,0.88) 0%, rgba(10,15,30,0.7) 50%, rgba(10,15,30,0.55) 100%);
  z-index: 1;
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.page-hero-content {
  max-width: 800px;
}

.page-hero .section-tag {
  color: rgba(255,255,255,0.6);
}

.page-hero .section-tag::before {
  background: rgba(255,255,255,0.4);
}

.page-hero-title {
  margin-bottom: 24px;
  color: #fff;
}

.page-hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,0.7);
  margin-bottom: 40px;
  max-width: 720px;
}

.page-hero-actions {
  display: flex;
  gap: 16px;
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-info {
  padding-right: 40px;
}

.contact-item {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: var(--radius-base);
}

.contact-label {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-value {
  font-size: 16px;
  color: var(--color-text);
  font-weight: 500;
}

.contact-form-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: 48px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

.form-input {
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  transition: all var(--duration-base) var(--ease-out);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

.form-input::placeholder {
  color: var(--color-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-privacy {
  font-size: 13px;
  color: var(--color-muted);
}

.form-success {
  text-align: center;
  padding: 48px 24px;
}

/* ===== Responsive Contact ===== */
@media (max-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .contact-info {
    padding-right: 0;
  }

  .contact-form-wrapper {
    padding: 32px;
  }
}

@media (max-width: 768px) {
  .page-hero {
    padding: 120px 0 60px;
  }

  .page-hero-desc {
    font-size: 16px;
  }

  .contact-form-wrapper {
    padding: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== Products Loading & Empty States ===== */
.products-loading,
.products-empty {
  text-align: center;
  padding: 80px 24px;
  color: var(--color-muted);
  font-size: 16px;
}

.products-loading p,
.products-empty p {
  margin-bottom: 0;
}

/* ===== Product Detail Page ===== */
.product-detail-hero {
  padding: 120px 0 32px;
  background: var(--color-bg);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-muted);
}

.breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-sep {
  color: var(--color-border);
}

.breadcrumb-current {
  color: var(--color-text);
  font-weight: 500;
}

.product-detail-content {
  padding: 40px 0 80px;
  background: var(--color-bg);
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: start;
}

.product-detail-gallery {
  position: sticky;
  top: 96px;
}

.gallery-main {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  margin-bottom: 16px;
}

.gallery-slider {
  width: 100%;
  height: 100%;
  position: relative;
}

.gallery-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-slow) var(--ease-out);
}

.gallery-slide.active {
  opacity: 1;
  pointer-events: auto;
}

.gallery-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  cursor: pointer;
  color: var(--color-secondary);
  transition: all var(--duration-fast) var(--ease-out);
  z-index: 2;
}

.gallery-nav:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.gallery-prev {
  left: 12px;
}

.gallery-next {
  right: 12px;
}

.gallery-counter {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 12px;
  z-index: 2;
}

.gallery-thumbs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.gallery-thumb {
  flex-shrink: 0;
  width: 80px;
  height: 60px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.6;
  transition: all var(--duration-fast) var(--ease-out);
}

.gallery-thumb:hover {
  opacity: 0.8;
}

.gallery-thumb.active {
  border-color: var(--color-primary);
  opacity: 1;
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-thumb-video {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary, #f5f5f5);
  color: var(--color-primary, #c9a96e);
}

.gallery-slide video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

.product-detail-info {
  padding-top: 16px;
}

.product-detail-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.product-detail-title {
  margin-bottom: 20px;
}

.product-detail-summary {
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-muted);
  margin-bottom: 40px;
}

.product-detail-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.product-detail-desc {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.product-detail-body {
  max-width: 900px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
}

.product-detail-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 16px;
  color: var(--color-secondary);
}

.product-detail-body p {
  margin-bottom: 16px;
}

.product-detail-body ul {
  margin: 12px 0 20px 24px;
  list-style: disc;
}

.product-detail-body li {
  margin-bottom: 8px;
  line-height: 1.7;
  color: var(--color-text);
}

.product-related {
  background: var(--color-bg);
}

/* ===== Responsive Product Detail ===== */
@media (max-width: 1024px) {
  .product-detail-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .product-detail-gallery {
    position: static;
  }
}

@media (max-width: 768px) {
  .product-detail-hero {
    padding: 100px 0 24px;
  }

  .product-detail-content {
    padding: 24px 0 60px;
  }

  .product-detail-actions {
    flex-direction: column;
  }

  .product-detail-actions .btn {
    text-align: center;
    justify-content: center;
  }

  .gallery-thumb {
    width: 64px;
    height: 48px;
  }

  .gallery-nav {
    width: 32px;
    height: 32px;
  }
}

/* ===== Product Rows (三大核心产品 - 图文左右交错) ===== */
/* ===== Bento Grid ===== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto auto;
  gap: 20px;
}

.bento-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 280px;
  display: flex;
  align-items: flex-end;
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);
  cursor: pointer;
}

.bento-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,15,30,0.1) 0%, rgba(10,15,30,0.55) 60%, rgba(10,15,30,0.82) 100%);
  z-index: 1;
  transition: background var(--duration-base) var(--ease-out);
}

.bento-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.bento-card:hover .bento-overlay {
  background: linear-gradient(180deg, rgba(10,15,30,0.05) 0%, rgba(10,15,30,0.45) 60%, rgba(10,15,30,0.75) 100%);
}

.bento-content {
  position: relative;
  z-index: 2;
  padding: 28px;
  width: 100%;
}

.bento-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.bento-number {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: #FFFFFF;
  background: rgba(0,86,255,0.85);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0;
}

.bento-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.bento-title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 10px;
  color: #FFFFFF;
}

.bento-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  line-height: 1.7;
  margin-bottom: 18px;
}

.bento-link {
  font-size: 13px;
  font-weight: 600;
  color: #60A5FA;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--duration-base) var(--ease-out);
}

.bento-card:hover .bento-link {
  gap: 12px;
}

/* Large card: spans 2 cols + 2 rows */
.bento-card-lg {
  grid-column: 1 / 3;
  grid-row: 1 / 3;
  min-height: 580px;
}

.bento-card-lg .bento-title {
  font-size: 30px;
}

.bento-card-lg .bento-desc {
  font-size: 15px;
  max-width: 420px;
}

/* Tall card: 1 col + 2 rows */
.bento-card-tall {
  grid-column: 3 / 4;
  grid-row: 1 / 3;
  min-height: 580px;
}

.bento-card-tall .bento-title {
  font-size: 26px;
}

/* Responsive */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
  }

  .bento-card-lg {
    grid-column: 1 / 3;
    grid-row: auto;
    min-height: 360px;
  }

  .bento-card-tall {
    grid-column: 1 / 3;
    grid-row: auto;
    min-height: 320px;
  }

  .bento-card-lg .bento-title,
  .bento-card-tall .bento-title {
    font-size: 24px;
  }
}

@media (max-width: 768px) {
  .bento-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .bento-card-lg,
  .bento-card-tall {
    grid-column: auto;
    min-height: 260px;
  }

  .bento-card {
    min-height: 240px;
  }

  .bento-content {
    padding: 22px;
  }

  .bento-title {
    font-size: 20px;
  }

  .bento-card-lg .bento-title,
  .bento-card-tall .bento-title {
    font-size: 22px;
  }

  .bento-desc {
    font-size: 13px;
  }
}

/* ===== News Card Link ===== */
a.news-card {
  text-decoration: none;
  color: inherit;
  display: block;
  cursor: pointer;
}

/* ===== News Detail Page ===== */
.news-detail-hero {
  padding: 120px 0 32px;
  background: var(--color-bg);
}

.news-detail-content {
  padding: 40px 0 80px;
  background: var(--color-bg);
}

.news-detail-header {
  max-width: 800px;
  margin-bottom: 48px;
}

.news-detail-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--color-muted);
}

.news-detail-category {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(0, 86, 255, 0.08);
  padding: 4px 10px;
  border-radius: 2px;
}

.news-detail-date {
  font-family: var(--font-mono);
  font-size: 13px;
}

.news-detail-author {
  font-size: 13px;
}

.news-detail-author::before {
  content: '·';
  margin-right: 16px;
  color: var(--color-border);
}

.news-detail-title {
  margin-bottom: 20px;
  line-height: 1.3;
}

.news-detail-summary {
  font-size: 18px;
  line-height: 1.8;
  color: var(--color-muted);
}

.news-detail-cover {
  margin-bottom: 48px;
  border-radius: var(--radius-base);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.news-detail-cover-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.news-detail-body {
  max-width: 800px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text);
  margin-bottom: 64px;
}

.news-detail-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 40px 0 16px;
  color: var(--color-secondary);
}

.news-detail-body p {
  margin-bottom: 18px;
}

.news-detail-body ul,
.news-detail-body ol {
  margin: 16px 0 24px 24px;
}

.news-detail-body ul {
  list-style: disc;
}

.news-detail-body ol {
  list-style: decimal;
}

.news-detail-body li {
  margin-bottom: 10px;
  line-height: 1.8;
  color: var(--color-text);
}

.news-detail-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-base);
  margin: 24px 0;
}

.news-detail-nav {
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .news-detail-hero {
    padding: 100px 0 24px;
  }

  .news-detail-content {
    padding: 24px 0 60px;
  }

  .news-detail-summary {
    font-size: 16px;
  }

  .news-detail-meta {
    flex-wrap: wrap;
    gap: 8px;
  }

  .news-detail-author::before {
    margin-right: 8px;
  }
}

/* Product Grid Section */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.product-grid:empty {
  display: none;
}

.product-grid-item {
  text-align: center;
}

.product-grid-item-img {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-bg-tertiary, #f5f5f5);
}

.product-grid-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.product-grid-item:hover .product-grid-item-img img {
  transform: scale(1.05);
}

.product-grid-item-title {
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .product-grid-item-title {
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}