/* ============================================
   沐阳科技 · 全新设计系统 v2.0
   科技感 · 玻璃拟态 · 暗色主题
   ============================================ */

/* ── 设计令牌 ─────────────────────────────── */
:root {
  /* 品牌主色 */
  --primary:        #4f8ef7;
  --primary-dark:   #2563eb;
  --primary-light:  #93c5fd;
  --primary-glow:   rgba(79, 142, 247, 0.35);

  /* 强调色 */
  --accent-green:   #10d9a0;
  --accent-purple:  #a855f7;
  --accent-amber:   #f59e0b;

  /* 文字 */
  --text-white:     #ffffff;
  --text-primary:   #1f2937;
  --text-secondary: #6b7280;
  --text-muted:     #9ca3af;
  --text-on-dark:   rgba(255,255,255,0.85);
  --text-dim:       rgba(255,255,255,0.5);

  /* 背景 */
  --bg-hero:        #05071a;
  --bg-dark:        #0d1117;
  --bg-dark-card:   #161b27;
  --bg-white:       #ffffff;
  --bg-light:       #f4f7fe;
  --bg-section-alt: #f8faff;

  /* 玻璃拟态 */
  --glass-bg:       rgba(255,255,255,0.06);
  --glass-border:   rgba(255,255,255,0.12);
  --glass-shadow:   0 8px 32px rgba(0,0,0,0.36);

  /* 边框 & 阴影 */
  --border-light:   #e5e7eb;
  --border-card:    rgba(79,142,247,0.18);
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:      0 6px 20px rgba(0,0,0,0.10);
  --shadow-lg:      0 16px 40px rgba(0,0,0,0.14);
  --shadow-blue:    0 8px 32px rgba(79,142,247,0.28);
  --shadow-card:    0 4px 24px rgba(37,99,235,0.10);

  /* 圆角 */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* 间距 */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* 字体大小 */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  /* 过渡 */
  --ease-fast:   all 0.15s ease;
  --ease-normal: all 0.3s ease;
  --ease-slow:   all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 基础重置 ─────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI',
               'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-white);
  overflow-x: hidden;
}

a {
  color: var(--primary-dark);
  text-decoration: none;
  transition: var(--ease-fast);
}
a:hover { color: var(--primary); }

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

/* ── 容器 ─────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ── 通用按钮 ─────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.8rem 1.8rem;
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: var(--ease-normal);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  opacity: 0;
  transition: opacity 0.2s;
}
.btn:hover::after { opacity: 1; }

/* 主按钮 — 渐变 + 光晕 */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-purple));
  color: #fff;
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(79,142,247,0.42);
  color: #fff;
}

/* 轮廓按钮 — 玻璃质感 */
.btn-outline {
  background: rgba(255,255,255,0.08);
  border: 1.5px solid rgba(255,255,255,0.4);
  color: #fff;
  backdrop-filter: blur(8px);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.16);
  border-color: #fff;
  transform: translateY(-2px);
  color: #fff;
}

/* 浅色场景的轮廓按钮 */
.btn-outline-dark {
  background: transparent;
  border: 1.5px solid var(--primary-dark);
  color: var(--primary-dark);
  border-radius: var(--radius-full);
  padding: 0.75rem 1.6rem;
  font-weight: 600;
  transition: var(--ease-normal);
}
.btn-outline-dark:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-blue);
}

/* ── 导航栏 ───────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: var(--space-4) 0;
  background: rgba(5, 7, 26, 0.72);
  backdrop-filter: blur(18px) saturate(1.6);
  -webkit-backdrop-filter: blur(18px) saturate(1.6);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background 0.4s, box-shadow 0.4s;
}

.navbar.scrolled {
  background: rgba(5, 7, 26, 0.95);
  box-shadow: 0 2px 24px rgba(0,0,0,0.4);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--text-xl);
  color: #fff;
}

/* Logo文字渐变 */
.brand-text {
  background: linear-gradient(90deg, #fff 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.03em;
}

/* Logo SVG图标 占位圆 */
.brand-logo-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-purple));
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.brand-logo-icon i { color: #fff; font-size: 17px; }

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-link {
  color: rgba(255,255,255,0.7);
  font-weight: 500;
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
  transition: var(--ease-fast);
}
.nav-link:hover,
.nav-link.active {
  color: #fff;
  background: rgba(255,255,255,0.10);
}

/* 导航CTA按钮 */
.nav-cta {
  margin-left: var(--space-4);
  padding: 0.5rem 1.2rem;
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-purple));
  color: #fff;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: var(--ease-normal);
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-blue);
  color: #fff;
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: var(--text-xl);
  cursor: pointer;
  padding: var(--space-2);
}

/* ── HERO 区域 ────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--bg-hero);
  color: #fff;
  overflow: hidden;
  padding-top: 80px;
}

/* 深空渐变背景层 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(79,142,247,0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 60%, rgba(168,85,247,0.14) 0%, transparent 55%),
    radial-gradient(ellipse 40% 40% at 50% 0%,  rgba(16,217,160,0.08) 0%, transparent 50%),
    linear-gradient(180deg, #050718 0%, #0a0d2e 50%, #07091f 100%);
  z-index: 0;
}

/* 网格线装饰 */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,142,247,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,142,247,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
}

/* 粒子画布 */
#particles-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.hero-overlay { display: none; } /* 旧版覆盖层禁用 */

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

/* Hero 左侧文字区 */
.hero-content { max-width: 580px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(79,142,247,0.14);
  border: 1px solid rgba(79,142,247,0.32);
  color: var(--primary-light);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}
.hero-badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse-dot 1.8s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

/* 标题渐变高亮 */
.hero-title .gradient-text {
  background: linear-gradient(90deg, var(--primary-light), var(--accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 打字机光标 */
.typewriter-cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--accent-green);
  margin-left: 4px;
  vertical-align: text-bottom;
  animation: blink-cursor 0.9s step-end infinite;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-on-dark);
  line-height: 1.7;
  margin-bottom: var(--space-10);
  max-width: 480px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

/* Hero 数据信任条 */
.hero-stats {
  display: flex;
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stat-item { text-align: left; }
.hero-stat-number {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: #fff;
  line-height: 1;
}
.hero-stat-number span {
  background: linear-gradient(90deg, var(--primary-light), var(--accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat-label {
  font-size: var(--text-xs);
  color: var(--text-dim);
  margin-top: 4px;
  letter-spacing: 0.04em;
}

/* Hero 右侧插图区 */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual img,
.hero-visual svg {
  width: 100%;
  max-width: 520px;
  filter: drop-shadow(0 0 48px rgba(79,142,247,0.25));
  animation: float-hero 5s ease-in-out infinite;
}

/* ── 通用 Section ─────────────────────────── */
.section {
  padding: var(--space-24) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(37,99,235,0.08);
  color: var(--primary-dark);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(37,99,235,0.15);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* 暗色背景 section 的标题颜色 */
.section-dark .section-title  { color: #fff; }
.section-dark .section-subtitle { color: var(--text-on-dark); }
.section-dark .section-eyebrow {
  background: rgba(79,142,247,0.15);
  color: var(--primary-light);
  border-color: rgba(79,142,247,0.3);
}

.bg-light { background: var(--bg-light); }
.bg-section-alt { background: var(--bg-section-alt); }
.section-dark { background: var(--bg-dark); }

/* ── 数据统计条 ───────────────────────────── */
.stats-bar {
  background: linear-gradient(135deg, #0d1117 0%, #161b27 100%);
  padding: var(--space-12) 0;
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  text-align: center;
}

.stat-item { position: relative; }
.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: 0; top: 20%;
  height: 60%; width: 1px;
  background: rgba(255,255,255,0.08);
}

.stat-number {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 900;
  background: linear-gradient(90deg, var(--primary-light), var(--accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ── 关于我们 ─────────────────────────────── */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(37,99,235,0.08);
  color: var(--primary-dark);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(37,99,235,0.15);
  margin-bottom: var(--space-5);
}

.about-text h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.about-text h3 span {
  background: linear-gradient(90deg, var(--primary-dark), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
}

/* 特性卡片 */
.about-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.feature-item {
  padding: var(--space-5) var(--space-4);
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--ease-normal);
  position: relative;
  overflow: hidden;
}

.feature-item::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-dark), var(--accent-purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.feature-item:hover {
  border-color: var(--border-card);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}
.feature-item:hover::before { transform: scaleX(1); }

.feature-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(168,85,247,0.10));
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto var(--space-3);
}
.feature-icon i {
  font-size: 1.25rem;
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-item h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}
.feature-item p {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 关于我们右侧插图容器 */
.about-visual {
  position: relative;
}

.about-visual img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* 悬浮信息卡 */
.about-float-card {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 170px;
  border: 1px solid var(--border-light);
}
.about-float-card.card-1 {
  top: -16px; right: -16px;
  animation: float-hero 4s ease-in-out infinite;
}
.about-float-card.card-2 {
  bottom: -16px; left: -16px;
  animation: float-hero 5s ease-in-out 0.8s infinite;
}
.float-card-icon {
  width: 40px; height: 40px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.float-card-icon.green { background: rgba(16,217,160,0.12); color: var(--accent-green); }
.float-card-icon.blue  { background: rgba(37,99,235,0.12);  color: var(--primary-dark); }
.float-card-icon i { font-size: 1.1rem; }
.float-card-text { font-size: var(--text-xs); color: var(--text-secondary); line-height: 1.4; }
.float-card-text strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

/* ── 行业解决方案 ─────────────────────────── */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.solution-card {
  position: relative;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  background: var(--bg-dark-card);
  border: 1px solid rgba(255,255,255,0.07);
  transition: var(--ease-normal);
  overflow: hidden;
  cursor: default;
}

.solution-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79,142,247,0.06), rgba(168,85,247,0.04));
  opacity: 0;
  transition: opacity 0.3s;
}
.solution-card:hover { transform: translateY(-6px); border-color: rgba(79,142,247,0.25); }
.solution-card:hover::before { opacity: 1; }

/* 卡片顶部光条 */
.solution-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--card-accent, linear-gradient(90deg, var(--primary-dark), var(--accent-purple)));
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.solution-card.green-accent  { --card-accent: linear-gradient(90deg, #10d9a0, #38f9d7); }
.solution-card.purple-accent { --card-accent: linear-gradient(90deg, #a855f7, #ec4899); }
.solution-card.amber-accent  { --card-accent: linear-gradient(90deg, #f59e0b, #ef4444); }

.solution-icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-5);
  font-size: 1.5rem;
}
.solution-icon.blue   { background: rgba(79,142,247,0.15);  color: var(--primary-light); }
.solution-icon.green  { background: rgba(16,217,160,0.15);  color: var(--accent-green); }
.solution-icon.purple { background: rgba(168,85,247,0.15);  color: var(--accent-purple); }
.solution-icon.amber  { background: rgba(245,158,11,0.15);  color: var(--accent-amber); }
.solution-icon.teal   { background: rgba(20,184,166,0.15);  color: #5eead4; }
.solution-icon.rose   { background: rgba(244,63,94,0.15);   color: #fb7185; }

.solution-card h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-3);
}

.solution-card p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.solution-tag {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.07);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.08);
}

/* ── 核心业务 ─────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.service-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: var(--ease-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--service-color-1, #2563eb), var(--service-color-2, #7c3aed));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.service-card:hover {
  border-color: rgba(37,99,235,0.2);
  box-shadow: var(--shadow-card);
  transform: translateY(-5px);
}
.service-card:hover::before { transform: scaleX(1); }

.service-card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.service-icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1.4rem;
  transition: transform 0.3s;
}
.service-card:hover .service-icon { transform: scale(1.08) rotate(-3deg); }

.service-icon.blue   { background: rgba(37,99,235,0.10); color: var(--primary-dark); }
.service-icon.green  { background: rgba(16,185,129,0.10); color: #059669; }
.service-icon.purple { background: rgba(124,58,237,0.10); color: #7c3aed; }
.service-icon.amber  { background: rgba(245,158,11,0.10); color: #d97706; }

.service-card-header-text {}
.service-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.service-subtitle-tag {
  font-size: var(--text-xs);
  color: var(--primary-dark);
  background: rgba(37,99,235,0.08);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.service-description {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.service-features {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.service-features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.service-features li::before {
  content: '';
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(37,99,235,0.1);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563eb' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: 11px;
  background-repeat: no-repeat;
  background-position: center;
  flex-shrink: 0;
}

.service-card-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-light);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary-dark);
  transition: gap 0.2s, color 0.2s;
}
.service-link:hover {
  gap: var(--space-3);
  color: var(--primary);
}
.service-link i { font-size: 12px; }

/* ── 技术栈 ───────────────────────────────── */
.tech-stack-section {
  background: var(--bg-section-alt);
  padding: var(--space-16) 0;
  overflow: hidden;
}

.tech-logos-track {
  display: flex;
  gap: var(--space-8);
  animation: marquee 28s linear infinite;
  width: max-content;
}
.tech-logos-track:hover { animation-play-state: paused; }

.tech-logo-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  width: 90px;
  padding: var(--space-4);
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: var(--ease-normal);
}
.tech-logo-item:hover {
  border-color: var(--border-card);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}
.tech-logo-item i {
  font-size: 2rem;
  color: var(--primary-dark);
}
.tech-logo-item span {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  font-weight: 500;
}

/* ── 客户案例 ─────────────────────────────── */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.case-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  padding: var(--space-6);
  transition: var(--ease-normal);
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  box-shadow: var(--shadow-card);
  border-color: rgba(37,99,235,0.2);
  transform: translateY(-4px);
}

.case-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.case-industry-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}
.badge-blue   { background: rgba(37,99,235,0.1);  color: var(--primary-dark); }
.badge-green  { background: rgba(16,185,129,0.1); color: #059669; }
.badge-purple { background: rgba(124,58,237,0.1); color: #7c3aed; }

.case-result-highlight {
  font-size: var(--text-xl);
  font-weight: 800;
  background: linear-gradient(90deg, var(--primary-dark), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.case-client {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}
.case-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.case-metrics {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-light);
}
.case-metric { text-align: center; }
.case-metric-value {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--text-primary);
}
.case-metric-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ── 在线工具 ─────────────────────────────── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.tool-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--border-light);
  transition: var(--ease-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.tool-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-dark), var(--accent-purple));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease;
}

.tool-card:hover {
  border-color: rgba(37,99,235,0.25);
  box-shadow: var(--shadow-card);
  transform: translateY(-5px);
}
.tool-card:hover::after { transform: scaleX(1); }

.tool-card-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(37,99,235,0.10), rgba(124,58,237,0.08));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-4);
  transition: transform 0.3s;
}
.tool-card:hover .tool-card-icon { transform: rotate(-8deg) scale(1.1); }

.tool-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.tool-header i {
  font-size: var(--text-2xl);
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tool-header h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-primary);
}

.tool-description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-4);
}

.tool-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.tool-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--primary-dark);
  background: rgba(37,99,235,0.08);
  padding: 3px 9px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(37,99,235,0.12);
}

.tool-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary-dark);
  transition: gap 0.2s, color 0.2s;
  margin-top: auto;
}
.tool-link i { font-size: 11px; }
.tool-link:hover { gap: var(--space-3); color: var(--primary); }

/* ── 联系我们 ─────────────────────────────── */
.contact-wrapper {
  background: linear-gradient(135deg, #05071a 0%, #0d0f2e 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-16);
  border: 1px solid rgba(255,255,255,0.06);
  position: relative;
  overflow: hidden;
}

.contact-wrapper::before {
  content: '';
  position: absolute;
  top: -120px; right: -120px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79,142,247,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  position: relative;
  z-index: 1;
}

/* 联系信息侧容器 */
.contact-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-info-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}
.contact-info-subtitle {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-item-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(79,142,247,0.15);
  border: 1px solid rgba(79,142,247,0.25);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--primary-light);
  font-size: 1rem;
}

.contact-item h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.contact-item p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
}

/* 联系表单侧 */
.contact-form {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  backdrop-filter: blur(12px);
}

.contact-form h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-6);
}

.form-group {
  margin-bottom: var(--space-4);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  color: #fff;
  font-size: var(--text-base);
  font-family: inherit;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.25); }

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: rgba(79,142,247,0.6);
  background: rgba(255,255,255,0.09);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.15);
}
.form-group select option { background: #161b27; color: #fff; }

.form-group textarea { resize: vertical; min-height: 110px; }

.form-submit-btn {
  width: 100%;
  padding: 0.9rem;
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-purple));
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: 700;
  cursor: pointer;
  transition: var(--ease-normal);
  position: relative;
  overflow: hidden;
  margin-top: var(--space-2);
}
.form-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-blue);
}

/* ── 页脚 ─────────────────────────────────── */
.footer {
  background: #030509;
  color: #fff;
  padding: var(--space-20) 0 var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-main {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-16);
  margin-bottom: var(--space-12);
}

.footer-brand {}
.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.footer-logo .brand-logo-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-purple));
  display: flex; align-items: center; justify-content: center;
}
.footer-logo .brand-logo-icon i { color: #fff; font-size: 17px; }
.footer-logo .brand-text {
  font-size: var(--text-xl);
  font-weight: 700;
  background: linear-gradient(90deg, #fff 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-desc {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.4);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}

/* 社交图标 */
.footer-socials {
  display: flex;
  gap: var(--space-3);
}
.footer-social-btn {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.45);
  font-size: 0.9rem;
  transition: var(--ease-fast);
}
.footer-social-btn:hover {
  background: rgba(79,142,247,0.2);
  border-color: rgba(79,142,247,0.4);
  color: var(--primary-light);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.footer-column h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--space-5);
  letter-spacing: 0.04em;
}

.footer-column a {
  display: block;
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.38);
  margin-bottom: var(--space-3);
  transition: color 0.2s, padding-left 0.2s;
}
.footer-column a:hover {
  color: rgba(255,255,255,0.85);
  padding-left: 4px;
}

.footer-divider {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-bottom: var(--space-8);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-copyright {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.25);
}
.footer-legal {
  display: flex;
  gap: var(--space-5);
}
.footer-legal a {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.25);
  transition: color 0.2s;
}
.footer-legal a:hover { color: rgba(255,255,255,0.6); }

/* ── 动画关键帧 ───────────────────────────── */
@keyframes float-hero {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-14px); }
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.75); }
}

@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-28px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}

/* ── 进入动画类 ───────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}
.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; }

.fade-in {
  animation: fadeInUp 0.6s ease-out both;
}

/* ── 工具页面（沿用原样式，优化版）────────── */
.tool-page {
  min-height: 100vh;
  padding: var(--space-12) 0;
  background: var(--bg-light);
  padding-top: 100px;
}

.tool-page-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-4) 0;
  z-index: 1000;
}

.tool-container {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-10);
}

.tool-header-section {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-light);
}

.tool-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: var(--space-3);
}

.tool-description-full {
  color: var(--text-secondary);
  line-height: 1.7;
}

.tool-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.input-section,
.output-section {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--border-light);
}

.tool-textarea {
  width: 100%;
  min-height: 200px;
  padding: var(--space-4);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  font-family: 'Consolas', 'Fira Code', 'Monaco', monospace;
  font-size: var(--text-sm);
  line-height: 1.6;
  resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: var(--bg-white);
  color: var(--text-primary);
}
.tool-textarea:focus {
  outline: none;
  border-color: var(--primary-dark);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.tool-buttons {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.tool-result {
  background: var(--bg-white);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  min-height: 100px;
  overflow-x: auto;
  font-family: 'Consolas', 'Fira Code', 'Monaco', monospace;
  font-size: var(--text-sm);
}
.tool-result pre { margin: 0; white-space: pre-wrap; word-wrap: break-word; }

.error-message {
  color: #dc2626;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-3);
  font-size: var(--text-sm);
}

.success-message {
  color: #059669;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-3);
  font-size: var(--text-sm);
}

/* ── 通知 toast ───────────────────────────── */
.notification {
  position: fixed;
  top: 20px; right: 20px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  min-width: 280px;
  max-width: 380px;
  font-size: var(--text-sm);
  font-weight: 500;
  animation: slideInRight 0.35s cubic-bezier(0.4, 0, 0.2, 1) both;
}
.notification-success { background: #059669; color: #fff; }
.notification-error   { background: #dc2626; color: #fff; }

.notification-close {
  background: none; border: none; color: inherit;
  cursor: pointer; margin-left: auto; padding: 2px;
  opacity: 0.75; transition: opacity 0.2s;
}
.notification-close:hover { opacity: 1; }

@keyframes slideInRight {
  from { transform: translateX(110%); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* ── 响应式 ───────────────────────────────── */

/* 平板 */
@media (max-width: 1024px) {
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid     { grid-template-columns: repeat(2, 1fr); }
  .tools-grid     { grid-template-columns: repeat(2, 1fr); }
}

/* 768px 移动端 */
@media (max-width: 768px) {
  /* 导航 */
  .navbar-toggle { display: block; }
  .nav-cta { display: none; }

  .navbar-menu {
    position: fixed;
    top: 65px; left: 0; right: 0;
    background: rgba(5,7,26,0.97);
    backdrop-filter: blur(18px);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-2);
    border-bottom: 1px solid rgba(255,255,255,0.07);
    transform: translateY(-110%);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.35s ease;
    pointer-events: none;
  }
  .navbar-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-link { font-size: var(--text-base); padding: var(--space-3) var(--space-4); }

  /* Hero */
  .hero .container { grid-template-columns: 1fr; gap: var(--space-10); text-align: center; }
  .hero-visual { order: -1; }
  .hero-visual img { max-width: 320px; margin: 0 auto; }
  .hero-content { max-width: 100%; }
  .hero-title  { font-size: clamp(2rem, 6vw, 2.8rem); }
  .hero-subtitle { font-size: var(--text-base); margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-stats  { justify-content: center; gap: var(--space-6); }

  /* 统计条 */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }

  /* 关于 */
  .about-content { grid-template-columns: 1fr; }
  .about-features { grid-template-columns: repeat(3, 1fr); }
  .about-float-card { display: none; }

  /* 解决方案 */
  .solutions-grid { grid-template-columns: 1fr; }

  /* 业务 */
  .services-grid { grid-template-columns: 1fr; }
  .service-features { grid-template-columns: 1fr; }

  /* 案例 */
  .cases-grid { grid-template-columns: 1fr; }

  /* 工具 */
  .tools-grid { grid-template-columns: repeat(2, 1fr); }

  /* 联系 */
  .contact-wrapper { padding: var(--space-8); }
  .contact-content { grid-template-columns: 1fr; gap: var(--space-8); }
  .contact-left { margin-bottom: var(--space-2); }
  .form-row { grid-template-columns: 1fr; }

  /* 页脚 */
  .footer-main { grid-template-columns: 1fr; gap: var(--space-10); }
  .footer-links { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* 480px 小屏 */
@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-stats   { flex-direction: column; gap: var(--space-4); align-items: center; }
  .stats-grid   { grid-template-columns: repeat(2, 1fr); }
  .about-features { grid-template-columns: 1fr; }
  .tools-grid   { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr; }
  .contact-wrapper { padding: var(--space-6); border-radius: var(--radius-lg); }
  .section { padding: var(--space-16) 0; }

  .tool-container { padding: var(--space-6); border-radius: var(--radius-lg); }
  .tools-nav-btn { width: 36px; height: 36px; font-size: 0.9rem; }
}

/* ── 企业微信二维码 ────────────────────────── */
.contact-qrcode-wrap {
  margin-top: var(--space-3);
  display: inline-block;
  padding: 6px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(79,142,247,0.35);
  box-shadow: 0 0 16px rgba(79,142,247,0.18), inset 0 0 8px rgba(79,142,247,0.08);
  transition: box-shadow 0.3s, border-color 0.3s;
  position: relative;
}
/* 四角高光装饰 */
.contact-qrcode-wrap::before,
.contact-qrcode-wrap::after {
  content: '';
  position: absolute;
  width: 10px; height: 10px;
  border-color: var(--primary-light);
  border-style: solid;
}
.contact-qrcode-wrap::before {
  top: -1px; left: -1px;
  border-width: 2px 0 0 2px;
  border-radius: 3px 0 0 0;
}
.contact-qrcode-wrap::after {
  bottom: -1px; right: -1px;
  border-width: 0 2px 2px 0;
  border-radius: 0 0 3px 0;
}
.contact-qrcode-wrap:hover {
  border-color: rgba(79,142,247,0.65);
  box-shadow: 0 0 24px rgba(79,142,247,0.32), inset 0 0 8px rgba(79,142,247,0.12);
}
.contact-qrcode {
  display: block;
  width: 120px;
  height: 120px;
  border-radius: calc(var(--radius-md) - 2px);
  object-fit: contain;
  image-rendering: pixelated;
}

/* ── 在线工具轮播 ─────────────────────────── */
.tools-carousel {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  position: relative;
}

.tools-viewport {
  flex: 1;
  overflow: hidden;
}

/* tools-grid 在轮播模式下不换行、平移 */
.tools-carousel .tools-grid {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--space-5);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

/* 每张卡片固定宽度，让多于可见数的卡被遮住 */
.tools-carousel .tool-card {
  flex: 0 0 calc(25% - var(--space-4));
  min-width: 0;
}

.tools-nav-btn {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1.5px solid rgba(79,142,247,0.35);
  background: rgba(79,142,247,0.10);
  color: var(--primary-light);
  font-size: 1rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--ease-normal);
  outline: none;
  z-index: 2;
}
.tools-nav-btn:hover {
  background: rgba(79,142,247,0.22);
  border-color: rgba(79,142,247,0.65);
  transform: scale(1.08);
}
.tools-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
  transform: none;
}

/* 指示点 */
.tools-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
}
.tools-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border-light);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.25s, transform 0.25s;
}
.tools-dot.active {
  background: var(--primary-dark);
  transform: scale(1.3);
}

/* 平板下每屏显示 2 张 */
@media (max-width: 1024px) {
  .tools-carousel .tool-card {
    flex: 0 0 calc(50% - var(--space-3));
  }
}
/* 移动端每屏显示 1 张 */
@media (max-width: 600px) {
  .tools-carousel .tool-card {
    flex: 0 0 100%;
  }
  .tools-carousel {
    gap: var(--space-2);
  }
}