/**
 * NexusCore 通讯 — 暗黑霓虹科技主题
 * 纯黑基底 + 深紫 + 霓虹紫/蓝光效 + 毛玻璃卡片
 * 纯原生 CSS，无框架依赖
 * 风格: 极客/未来/暗黑/技术信仰
 * 字体: Inter (Google Fonts) + JetBrains Mono (Google Fonts)
 */



/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 基底色 — 纯黑 + 深紫 */
  --bg-deep: #000000;
  --bg-primary: #050510;
  --bg-night: #0A0A1A;
  --bg-purple: #1A0B2E;
  --bg-card: rgba(255, 255, 255, 0.02);
  --bg-card-hover: rgba(255, 255, 255, 0.04);
  --bg-glass: rgba(26, 11, 46, 0.4);
  --bg-glass-hover: rgba(26, 11, 46, 0.6);
  --bg-input: rgba(255, 255, 255, 0.03);

  /* 霓虹色 — 紫/蓝光谱 */
  --neon-purple: #7C3AED;
  --neon-purple-bright: #A78BFA;
  --neon-purple-dim: rgba(124, 58, 237, 0.12);
  --neon-purple-glow: rgba(124, 58, 237, 0.3);
  --neon-blue: #3B82F6;
  --neon-blue-bright: #60A5FA;
  --neon-blue-dim: rgba(59, 130, 246, 0.12);
  --neon-blue-glow: rgba(59, 130, 246, 0.3);
  --neon-cyan: #06B6D4;
  --neon-cyan-glow: rgba(6, 182, 212, 0.25);

  /* 渐变色 */
  --gradient-primary: linear-gradient(135deg, #7C3AED, #3B82F6);
  --gradient-glow: linear-gradient(135deg, #7C3AED, #3B82F6, #06B6D4);
  --gradient-dark: linear-gradient(180deg, #000000, #1A0B2E, #000000);

  /* 文字 */
  --text-primary: #E8ECF4;
  --text-secondary: #8892A4;
  --text-muted: #4A5468;
  --text-neon: #A78BFA;

  /* 边框 */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-card: rgba(124, 58, 237, 0.1);
  --border-glow: rgba(124, 58, 237, 0.2);
  --border-neon: rgba(124, 58, 237, 0.35);

  /* 霓虹阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.6);
  --shadow-glow-purple: 0 0 20px rgba(124, 58, 237, 0.15), 0 0 60px rgba(124, 58, 237, 0.05);
  --shadow-glow-blue: 0 0 20px rgba(59, 130, 246, 0.15), 0 0 60px rgba(59, 130, 246, 0.05);
  --shadow-neon-border: 0 0 1px rgba(124, 58, 237, 0.4), inset 0 0 1px rgba(124, 58, 237, 0.2);
  --shadow-neon-text: 0 0 10px rgba(167, 139, 250, 0.5), 0 0 30px rgba(167, 139, 250, 0.2);

  /* 圆角 — 小圆角精密感 */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* 间距 */
  --section-py: 100px;
  --section-py-mobile: 64px;
  --container-max: 1200px;
  --header-h: 72px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 120ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;

  /* 字体 — Inter (现代无衬线) + JetBrains Mono (等宽代码) */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
}

/* ============================================================
   全局重置
   ============================================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg-deep);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 纯黑背景网格纹理 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(rgba(124, 58, 237, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 58, 237, 0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* 环境光晕 — 底部紫色光 */
body::after {
  content: '';
  position: fixed;
  bottom: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 1200px;
  height: 1200px;
  background: radial-gradient(ellipse at center, rgba(124, 58, 237, 0.06) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

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

::selection {
  background: rgba(124, 58, 237, 0.4);
  color: #fff;
}

/* 滚动条 */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(124, 58, 237, 0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(124, 58, 237, 0.5); }

/* ============================================================
   容器 & 区块
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

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

.section--dark { background: var(--bg-night); }
.section--purple { background: var(--bg-purple); }
.section--glass { background: rgba(26, 11, 46, 0.3); backdrop-filter: blur(10px); }

/* 区块标签 */
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--neon-purple-bright);
  padding: 4px 12px;
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: 2px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* 区块头部居中 */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header .section-subtitle { margin: 0 auto; }

/* 霓虹分割线 */
.neon-divider {
  width: 60px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
  margin: 16px auto;
  box-shadow: 0 0 8px rgba(124, 58, 237, 0.4);
}

/* ============================================================
   Header — 纯黑固定导航
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: rgba(0, 0, 0, 0.95);
  box-shadow: 0 1px 20px rgba(124, 58, 237, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
  gap: 32px;
}

/* Logo — 霓虹光效文字 */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header__logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-xs);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  box-shadow: 0 0 16px rgba(124, 58, 237, 0.4);
}

.header__logo-text {
  display: flex;
  flex-direction: column;
}

.header__logo-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.header__logo-sub {
  font-size: 0.58rem;
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--neon-purple-bright);
  text-shadow: 0 0 8px rgba(167, 139, 250, 0.4);
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.header__nav-link {
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  position: relative;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--text-primary);
}

.header__nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--neon-purple);
  border-radius: 1px;
  box-shadow: 0 0 6px rgba(124, 58, 237, 0.5);
}

/* 导航下拉 */
.header__nav-item { position: relative; }

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 60;
  min-width: 180px;
  padding: 8px 0;
  background: rgba(10, 10, 26, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8), var(--shadow-glow-purple);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--duration-fast) var(--ease-out);
}

.header__dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--duration-fast);
}

.header__dropdown a:hover {
  background: rgba(124, 58, 237, 0.1);
  color: var(--neon-purple-bright);
}

/* 右侧操作 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.header__cta {
  padding: 8px 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--neon-purple-bright);
  border: 1px solid rgba(124, 58, 237, 0.4);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.header__cta:hover {
  background: rgba(124, 58, 237, 0.15);
  border-color: var(--neon-purple);
  box-shadow: 0 0 16px rgba(124, 58, 237, 0.2);
  color: #fff;
}

/* 汉堡菜单 — 独立于 header__actions (13.4) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 110;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--duration-fast) var(--ease-out);
}

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

/* 移动端侧滑菜单 */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  z-index: 120;
  background: rgba(5, 5, 16, 0.98);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-left: 1px solid var(--border-glow);
  transition: right var(--duration-slow) var(--ease-out);
  overflow-y: auto;
}

.mobile-nav.open { right: 0; }

.mobile-nav__inner { padding: 24px 20px; }

.mobile-nav__link {
  display: block;
  padding: 14px 16px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}

.mobile-nav__link:hover { background: rgba(124, 58, 237, 0.08); color: var(--text-primary); }

.mobile-nav__sub { padding-left: 20px; display: none; }
.mobile-nav__sub.open { display: block; }
.mobile-nav__sub a {
  display: block;
  padding: 10px 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
}

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  z-index: 115;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-fast);
}

.mobile-nav__overlay.open { opacity: 1; visibility: visible; }

/* ============================================================
   Hero / Banner — 全屏幻灯
   ============================================================ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  background: var(--bg-deep);
}

.hero-swiper { width: 100%; height: 100%; }

.hero__slide {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.3) 0%,
    rgba(0, 0, 0, 0.15) 40%,
    rgba(0, 0, 0, 0.7) 80%,
    rgba(0, 0, 0, 0.95) 100%
  );
  z-index: 1;
}

/* 网格线叠加 */
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(rgba(124, 58, 237, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 58, 237, 0.04) 1px, transparent 1px);
  background-size: 100px 100px;
  pointer-events: none;
}

.hero__content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  text-align: center;
  width: 100%;
  max-width: 900px;
  padding: 0 20px;
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  text-shadow: 0 0 30px rgba(124, 58, 237, 0.3), 0 0 60px rgba(124, 58, 237, 0.1);
}

.hero__title--glow {
  background: var(--gradient-glow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 10px rgba(124, 58, 237, 0.5));
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.hero__pagination .swiper-pagination-bullet {
  width: 8px;
  height: 8px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  transition: all var(--duration-normal);
  opacity: 1;
}

.hero__pagination .swiper-pagination-bullet-active {
  width: 24px;
  background: var(--neon-purple);
  box-shadow: 0 0 8px rgba(124, 58, 237, 0.5);
}

/* 滚动指示器 */
.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hero__scroll span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
}

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

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ============================================================
   霓虹光效动画
   ============================================================ */
@keyframes neonPulse {
  0%, 100% { box-shadow: 0 0 4px rgba(124, 58, 237, 0.2), 0 0 12px rgba(124, 58, 237, 0.1); }
  50% { box-shadow: 0 0 8px rgba(124, 58, 237, 0.4), 0 0 24px rgba(124, 58, 237, 0.2); }
}

@keyframes neonFlicker {
  0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
    text-shadow: 0 0 7px rgba(167, 139, 250, 0.4), 0 0 20px rgba(167, 139, 250, 0.15);
  }
  20%, 24%, 55% {
    text-shadow: 0 0 3px rgba(167, 139, 250, 0.2), 0 0 8px rgba(167, 139, 250, 0.05);
  }
}

@keyframes borderGlow {
  0%, 100% { border-color: rgba(124, 58, 237, 0.2); }
  50% { border-color: rgba(124, 58, 237, 0.5); }
}

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

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  letter-spacing: 0.01em;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.25);
}

.btn--primary:hover {
  box-shadow: 0 0 30px rgba(124, 58, 237, 0.4), 0 0 60px rgba(124, 58, 237, 0.15);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--neon-purple-bright);
  border: 1px solid rgba(124, 58, 237, 0.4);
}

.btn--outline:hover {
  border-color: var(--neon-purple);
  background: rgba(124, 58, 237, 0.1);
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.15);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}

.btn--ghost:hover {
  color: var(--neon-purple-bright);
  border-color: rgba(124, 58, 237, 0.2);
}

.btn--lg { padding: 15px 36px; font-size: 1rem; }
.btn--sm { padding: 8px 18px; font-size: 0.8rem; }

/* 霓虹闪烁按钮 */
.btn--glow {
  animation: neonPulse 3s ease-in-out infinite;
}

/* ============================================================
   卡片 — 毛玻璃 + 霓虹边框
   ============================================================ */
.card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-slow) var(--ease-out);
}

.card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-neon);
  box-shadow: var(--shadow-glow-purple), var(--shadow-neon-border);
  transform: translateY(-4px);
}

.card__image {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--bg-purple);
}

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

.card:hover .card__image img { transform: scale(1.05); }

.card__body { padding: 20px 24px; }

.card__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--neon-blue-bright);
  padding: 2px 8px;
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 2px;
  margin-bottom: 8px;
}

.card__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.35;
}

.card__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.card__meta i { color: var(--neon-purple); }

.card__price {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--neon-purple-bright);
}

/* 卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   特征卡片 (三列)
   ============================================================ */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--duration-slow) var(--ease-out);
}

.feature-card:hover {
  border-color: var(--border-neon);
  box-shadow: var(--shadow-glow-purple), var(--shadow-neon-border);
  transform: translateY(-6px);
}

.feature-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  border-radius: var(--radius-md);
  background: var(--bg-purple);
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--neon-purple-bright);
  transition: all var(--duration-normal);
}

.feature-card:hover .feature-card__icon {
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.3);
  color: #fff;
}

.feature-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.feature-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================================
   数据统计
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item__number {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 800;
  color: var(--neon-purple-bright);
  line-height: 1;
  margin-bottom: 8px;
  text-shadow: 0 0 20px rgba(167, 139, 250, 0.3);
}

.stat-item__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ============================================================
   CTA 区块
   ============================================================ */
.cta-section {
  padding: 100px 0;
  text-align: center;
  background: var(--bg-purple);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle at center, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 280px;
  overflow: hidden;
  background: var(--bg-purple);
}

.inner-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.inner-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.85) 100%);
  z-index: 1;
}

.inner-banner__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
}

.inner-banner__title {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.inner-banner__subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ============================================================
   面包屑
   ============================================================ */
.breadcrumb-bar {
  background: var(--bg-night);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.breadcrumb a { color: var(--text-secondary); transition: color var(--duration-fast); }
.breadcrumb a:hover { color: var(--neon-purple-bright); }
.breadcrumb i { font-size: 0.55rem; color: var(--text-muted); }

/* ============================================================
   内页布局
   ============================================================ */
.page-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  padding: 48px 0;
}

/* 列表头部 */
.list-header {
  text-align: center;
  margin-bottom: 48px;
}

.list-header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

/* 过滤栏 */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 0;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar { display: none; }

.filter-bar a {
  padding: 8px 18px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--duration-fast);
}

.filter-bar a:hover,
.filter-bar a.active {
  background: rgba(124, 58, 237, 0.12);
  color: var(--neon-purple-bright);
}

/* 列表网格 */
.list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   详情页
   ============================================================ */
.detail { max-width: 860px; margin: 0 auto; }

.detail__header { margin-bottom: 28px; }

.detail__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 12px;
}

.detail__meta-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.detail__meta-row i { color: var(--neon-purple); margin-right: 4px; }

/* 产品参数卡片 */
.detail__params {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.detail__param {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-align: center;
}

.detail__param-label {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.detail__param-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* 正文 */
.detail__body {
  line-height: 1.9;
  color: var(--text-secondary);
}

.detail__body img { border-radius: var(--radius-md); margin: 24px 0; }
.detail__body h2, .detail__body h3 { color: var(--text-primary); margin: 32px 0 12px; }
.detail__body p { margin-bottom: 16px; }

/* 上下篇 */
.detail__pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  margin-top: 48px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.detail__pager a:hover { color: var(--neon-purple-bright); }

/* 相关推荐 */
.related-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 48px;
  margin-bottom: 20px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 48px;
}

.pagination a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 8px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}

.pagination a:hover,
.pagination a.active {
  background: rgba(124, 58, 237, 0.15);
  border-color: var(--neon-purple);
  color: var(--neon-purple-bright);
}

.pagination a.active {
  box-shadow: 0 0 10px rgba(124, 58, 237, 0.2);
}

/* ============================================================
   空状态
   ============================================================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.3;
}

/* ============================================================
   搜索
   ============================================================ */
.search-box {
  max-width: 640px;
  margin: 0 auto;
}

.search-form-row {
  display: flex;
  gap: 12px;
}

.search-input-wrap {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.search-input-wrap i {
  position: absolute;
  left: 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.search-input-wrap input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--duration-fast);
}

.search-input-wrap input:focus {
  border-color: var(--border-neon);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.08);
}

/* 搜索结果 */
.search-result-item {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--duration-fast);
}

.search-result-item:hover { padding-left: 8px; }

.search-result-item__thumb {
  width: 140px;
  height: 100px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-purple);
}

.search-result-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search-result-item__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.search-result-item__date {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.search-result-item__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ============================================================
   联系页面
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info__item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-info__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--bg-purple);
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-purple-bright);
  font-size: 1rem;
}

.contact-info__label {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-info__value {
  color: var(--text-primary);
  font-weight: 500;
}

.contact-form-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px;
}

/* ============================================================
   表单
   ============================================================ */
.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.required { color: var(--neon-purple-bright); }

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: all var(--duration-fast);
}

.form-control:focus {
  border-color: var(--border-neon);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.08);
}

textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control { cursor: pointer; }

/* ============================================================
   架构展示页
   ============================================================ */
.arch-diagram {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.arch-layer {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.arch-node {
  background: var(--bg-purple);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-md);
  padding: 20px 28px;
  min-width: 140px;
  transition: all var(--duration-normal);
}

.arch-node:hover {
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.2);
  border-color: var(--neon-purple);
}

.arch-node__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

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

.arch-connector {
  text-align: center;
  padding: 8px 0;
  color: var(--neon-purple);
  font-size: 0.7rem;
  font-family: var(--font-mono);
}

/* ============================================================
   开发者中心
   ============================================================ */
.dev-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.dev-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: all var(--duration-slow) var(--ease-out);
}

.dev-card:hover {
  border-color: var(--border-neon);
  box-shadow: var(--shadow-glow-purple);
  transform: translateY(-4px);
}

.dev-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: var(--radius-md);
  background: var(--bg-purple);
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--neon-purple-bright);
}

.dev-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.dev-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================================
   评论/留言列表
   ============================================================ */
.message-list { margin-top: 48px; }

.message-item {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 16px;
}

.message-item__header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.message-item__name { color: var(--neon-purple-bright); font-weight: 500; }
.message-item__content { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
.message-item__reply {
  margin-top: 12px;
  padding: 12px 16px;
  background: rgba(59, 130, 246, 0.05);
  border-left: 2px solid var(--neon-blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg-night);
  border-top: 1px solid var(--border-subtle);
  position: relative;
}

.footer__top-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-purple), transparent);
  opacity: 0.3;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1fr;
  gap: 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 56px 20px 40px;
}

.footer__brand-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 16px 0;
}

.footer__social {
  display: flex;
  gap: 10px;
}

.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: all var(--duration-fast);
}

.footer__social a:hover {
  border-color: var(--neon-purple);
  color: var(--neon-purple-bright);
  box-shadow: 0 0 10px rgba(124, 58, 237, 0.15);
}

.footer__col-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer__links a {
  display: block;
  padding: 6px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.footer__links a:hover { color: var(--neon-purple-bright); }

.footer__contact-item {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.footer__contact-item i {
  color: var(--neon-purple);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer__qrcode {
  width: 100px;
  height: 100px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

/* 友情链接 */
.friend-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 16px 0;
  border-top: 1px solid var(--border-subtle);
}

.friend-links__label {
  font-size: 0.78rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.friend-links a {
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

.friend-links a:hover { color: var(--neon-purple-bright); }

/* 底部版权 */
.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 20px;
}

.footer__bottom-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   返回顶部 / 在线客服
   ============================================================ */
.back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 80;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-purple);
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-purple-bright);
  font-size: 0.9rem;
  transition: all var(--duration-fast);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}

.back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  box-shadow: 0 0 16px rgba(124, 58, 237, 0.3);
  border-color: var(--neon-purple);
  color: #fff;
}

/* 在线客服按钮 */
.online-service {
  position: fixed;
  bottom: 84px;
  right: 28px;
  z-index: 80;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 0 16px rgba(124, 58, 237, 0.3);
  animation: neonPulse 3s ease-in-out infinite;
  transition: all var(--duration-fast);
}

.online-service:hover { box-shadow: 0 0 24px rgba(124, 58, 237, 0.5); }

/* ============================================================
   画廊 (案例)
   ============================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-purple);
}

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

.gallery-item:hover img { transform: scale(1.08); }

.gallery-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.2) 40%, transparent 100%);
  display: flex;
  align-items: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.gallery-item:hover .gallery-item__overlay { opacity: 1; }

.gallery-item__title {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
}

/* ============================================================
   响应式 — 1024px 以下 (平板)
   ============================================================ */
@media (max-width: 1024px) {
  :root { --section-py: 80px; }

  .header__nav { display: none; }
  .header__actions { display: none; }
  .hamburger { display: flex; }

  .card-grid,
  .features,
  .list-grid,
  .related-grid,
  .gallery-grid,
  .dev-grid { grid-template-columns: repeat(2, 1fr); }

  .stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .footer__grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .detail__params { grid-template-columns: repeat(2, 1fr); }

  .inner-banner { height: 220px; }
  .inner-banner__title { font-size: 1.5rem; }

  .section-title { font-size: 1.75rem; }
  .cta-section__title { font-size: 2rem; }
}

/* ============================================================
   响应式 — 768px 以下 (手机)
   ============================================================ */
@media (max-width: 768px) {
  :root { --section-py: 64px; }

  .card-grid,
  .features,
  .list-grid,
  .related-grid,
  .gallery-grid,
  .dev-grid { grid-template-columns: 1fr; gap: 16px; }

  .stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stat-item__number { font-size: 2.2rem; }

  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom-inner { flex-direction: column; text-align: center; }

  .hero__title { font-size: 2rem; }
  .hero__subtitle { font-size: 0.9rem; }

  .detail__params { grid-template-columns: 1fr 1fr; }
  .detail__title { font-size: 1.35rem; }

  .section-title { font-size: 1.5rem; }
  .cta-section__title { font-size: 1.6rem; }

  .inner-banner { height: 180px; }
  .inner-banner__title { font-size: 1.3rem; }

  .pagination a { min-width: 34px; height: 34px; font-size: 0.78rem; }

  .search-result-item { flex-direction: column; }
  .search-result-item__thumb { width: 100%; height: 160px; }

  .arch-layer { flex-direction: column; align-items: center; }
  .arch-node { width: 100%; }

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

/* ============================================================
   响应式 — 480px 以下
   ============================================================ */
@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .hero__actions { flex-direction: column; align-items: center; }
  .hero__title { font-size: 1.6rem; }
  .search-form-row { flex-direction: column; }
  .detail__pager { flex-direction: column; gap: 8px; text-align: center; }
}


/* Mobile layout refinement 2026-09-21: desktop rules remain unchanged. */
@media (max-width: 1024px) {
 .header__inner { justify-content: space-between; gap: 12px; }
 .header__logo { min-width: 0; }
 .header__logo-text { min-width: 0; overflow-wrap: anywhere; }
 .hamburger { flex-shrink: 0; min-width: 44px; min-height: 44px; justify-content: center; }
 .inner-banner { height: auto !important; min-height: 220px; padding: calc(var(--header-h) + 28px) 20px 28px; }
 .inner-banner__content { height: auto; min-height: 90px; overflow-wrap: anywhere; }
 .breadcrumb { flex-wrap: wrap; }
 .page-layout.container { padding-left: 20px; padding-right: 20px; }
 .detail, .detail__body, .contact-grid > *, .card, .card__body { min-width: 0; overflow-wrap: anywhere; }
 .detail__body table { display: block; max-width: 100%; overflow-x: auto; }
 .detail__body pre, .code-block { max-width: 100%; overflow-x: auto; }
 .mobile-nav { width: min(300px, calc(100vw - 48px)); height: 100dvh; visibility: hidden; }
 .mobile-nav.open { visibility: visible; }
 .mobile-nav__sub:not(.open) { display: none; }
 .mobile-nav__close { display: block; margin: 0 0 12px auto; min-height: 44px; padding: 8px 14px; border: 1px solid var(--border-glow); border-radius: 5px; }
}
@media (max-width: 768px) {
 :root { --section-py: 36px; --header-h: 64px; }
 .container, .header__inner { padding-left: 16px; padding-right: 16px; }
 .header__logo-name { font-size: .95rem; }
 .header__logo-sub { letter-spacing: .1em; }
 .hero { height: 510px; min-height: 0; }
 .hero__content { top: 54%; padding: 0 20px; }
 .hero__title { font-size: clamp(1.55rem, 6vw, 2.2rem); line-height: 1.3; margin-bottom: 14px; }
 .hero__subtitle { margin-bottom: 22px; }
 .hero__actions { flex-direction: row; gap: 10px; }
 .hero__actions .btn { padding: 12px 17px; font-size: .85rem; }
 .hero__scroll { bottom: 18px; }
 .hero__scroll-line { height: 20px; }
 .section-header, .list-header { margin-bottom: 24px; }
 .section-subtitle { font-size: .9rem; }
 .section-tag { margin-bottom: 8px; }
 .neon-divider { margin: 12px auto; }
 .features, .dev-grid { gap: 12px; }
 .feature-card, .dev-card { display: grid; grid-template-columns: 42px minmax(0,1fr); column-gap: 14px; padding: 18px; text-align: left; }
 .feature-card__icon, .dev-card__icon { grid-row: 1 / 3; width: 42px; height: 42px; margin: 0; font-size: 1.15rem; }
 .feature-card__title, .dev-card__title { font-size: 1rem; margin-bottom: 5px; }
 .feature-card__desc, .dev-card__desc { font-size: .85rem; }
 .stats { gap: 24px 10px; }
 .stat-item__number { font-size: clamp(1.6rem, 7vw, 2.2rem); }
 .arch-diagram { padding: 16px 10px; }
 .arch-layer { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 6px; align-items: stretch; }
 .arch-node { width: auto; min-width: 0; padding: 12px 5px; overflow-wrap: anywhere; }
 .arch-node__title { font-size: .78rem; }
 .arch-node__desc { font-size: .68rem; }
 .arch-connector { font-size: .64rem; padding: 8px 0; }
 .card-grid, .list-grid, .related-grid { gap: 12px; grid-template-columns: repeat(2,minmax(0,1fr)); }
 .card__body { padding: 13px 12px; }
 .card__image { aspect-ratio: 4/3; }
 .card__title { font-size: .95rem; line-height: 1.45; }
 .card__tag { font-size: .62rem; padding: 2px 5px; max-width: 100%; }
 .card__desc { font-size: .78rem; }
 .card__meta { flex-wrap: wrap; gap: 3px 10px; font-size: .7rem; margin-top: 8px; }
 .list-grid .card { display: grid; grid-template-columns: 96px minmax(0,1fr); }
 .list-grid { grid-template-columns: 1fr; }
 .list-grid .card__image { height: 100%; min-height: 130px; aspect-ratio: auto; }
 .list-grid .card__body { align-self: center; }
 .section > .container > div[style*="margin-top:40px"] { margin-top: 22px !important; }
 .section > .container > div[style*="margin-bottom:56px"] { margin-bottom: 26px !important; }
 .cta-section { padding: 38px 0; }
 .cta-section__title { font-size: 1.45rem; }
 .inner-banner { min-height: 204px; padding: 88px 16px 24px; }
 .inner-banner__title { font-size: 1.3rem; line-height: 1.4; }
 .inner-banner__subtitle { font-size: .8rem; }
 body > div[style*="position:sticky"] { top: var(--header-h) !important; }
 .page-layout.container { padding: 28px 16px; }
 .filter-bar { padding: 8px 0; }
 .filter-bar a { padding: 9px 13px; }
 .detail__params { gap: 10px; margin-bottom: 22px; }
 .detail__param { padding: 12px 8px; min-width: 0; }
 .detail__param-value { font-size: .9rem; }
 .detail__body { font-size: .92rem; line-height: 1.8; }
 .detail__body h2, .detail__body h3 { margin-top: 24px; }
 .detail__pager { margin-top: 26px; align-items: flex-start; text-align: left; }
 .related-title, .pagination { margin-top: 28px; }
 .pagination { flex-wrap: wrap; }
 .contact-grid { gap: 24px; }
 .contact-form-card { padding: 20px 16px; }
 .contact-form-card form > div[style*="grid-template-columns"] { grid-template-columns: minmax(0,1fr) !important; }
 .form-control, .search-input-wrap input { min-width: 0; font-size: 16px; }
 .form-group > div[style*="display:flex"] { flex-wrap: wrap; }
 .form-control[name="checkcode"] { width: 120px !important; flex: 1 1 100px; }
 .footer__grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px 18px; padding: 32px 16px 24px; }
 .footer__grid > :first-child { grid-column: 1 / -1; }
 .footer__grid > * { min-width: 0; overflow-wrap: anywhere; }
 .footer__col-title { margin-bottom: 10px; }
 .footer__brand-desc { margin: 10px 0; }
 .footer__bottom-inner { padding-left: 16px; padding-right: 16px; overflow-wrap: anywhere; }
 .online-service, .back-top { right: 12px; }
 .search-result-item { flex-direction: row; gap: 12px; padding: 18px 0; }
 .search-result-item__thumb { width: 86px; height: 80px; }
 .search-result-item > :last-child { min-width: 0; overflow-wrap: anywhere; }
}

@media (max-width: 768px) { .arch-layer:has(> .arch-node:nth-child(4)) { grid-template-columns: repeat(2,minmax(0,1fr)); } }