/* ============================================================
   管货通系列软件 · 简约清淡风格 · 设计系统
   - 浅色调色板，柔和阴影
   - CSS 变量支持浅色/深色主题切换
   - 每款产品通过 [data-product-color] 注入独立品牌色
   ============================================================ */

:root {
  /* 中性色 - 浅色主题 */
  --bg: #f7f8fa;
  --bg-elev: #ffffff;
  --bg-soft: #f0f2f5;
  --text: #2b2f38;
  --text-soft: #5a6072;
  --text-mute: #8b93a7;
  --border: #e8ebf0;
  --border-soft: #f0f2f6;

  /* 主品牌色（清淡蓝灰） */
  --brand: #4f6ef7;
  --brand-soft: #eef1fe;
  --brand-mid: #7b8cf8;

  /* 功能色（清淡） */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* 产品默认色（可被 [data-product-color] 覆盖） */
  --p: #4f6ef7;
  --p-soft: #eef1fe;
  --p-mid: #7b8cf8;

  /* 效果 */
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(30, 40, 60, 0.05);
  --shadow: 0 8px 30px rgba(30, 40, 60, 0.08);
  --shadow-lg: 0 16px 48px rgba(30, 40, 60, 0.12);
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 深色主题 ===== */
[data-theme='dark'] {
  --bg: #14161c;
  --bg-elev: #1c1f27;
  --bg-soft: #232734;
  --text: #e8eaf0;
  --text-soft: #aeb6c8;
  --text-mute: #727d92;
  --border: #2c3140;
  --border-soft: #232734;
  --brand: #818cf8;
  --brand-soft: #23284a;
  --brand-mid: #a5acfb;
  --p: var(--brand);
  --p-soft: var(--brand-soft);
  --p-mid: var(--brand-mid);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ===== 顶部公告条 ===== */
.announce {
  background: linear-gradient(90deg, var(--brand), var(--p-mid));
  color: #fff;
  text-align: center;
  font-size: 13px;
  padding: 8px 16px;
}

/* ===== 导航栏 ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg-elev) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
  transition: background var(--transition), border-color var(--transition);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.3px;
}
.logo-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--p-mid));
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 17px;
  box-shadow: var(--shadow-sm);
}
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 8px 15px;
  border-radius: 10px;
  font-size: 14.5px;
  color: var(--text-soft);
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}
.nav-links a:hover { color: var(--text); background: var(--bg-soft); }

/* 下拉菜单 */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 260px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
}
.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
}
.dropdown-menu a:hover { background: var(--bg-soft); }
.dropdown-menu .dp-logo {
  width: 34px; height: 34px;
  border-radius: 9px;
  display: grid; place-items: center;
  color: #fff; font-weight: 700; font-size: 14px;
  flex-shrink: 0;
}
.dropdown-menu .dp-name { font-weight: 600; }
.dropdown-menu .dp-desc { font-size: 12px; color: var(--text-mute); font-weight: 400; }

/* 主题切换 & 移动菜单 */
.nav-actions { display: flex; align-items: center; gap: 10px; }
.icon-btn {
  width: 40px; height: 40px;
  border-radius: 11px;
  display: grid; place-items: center;
  background: var(--bg-soft);
  color: var(--text-soft);
  font-size: 18px;
  transition: all var(--transition);
}
.icon-btn:hover { background: var(--border); color: var(--text); }
.theme-toggle .icon-sun { display: none; }
[data-theme='dark'] .theme-toggle .icon-moon { display: none; }
[data-theme='dark'] .theme-toggle .icon-sun { display: block; }

.btn-primary {
  background: var(--brand);
  color: #fff;
  padding: 10px 20px;
  border-radius: 11px;
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--brand) 35%, transparent);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 22px color-mix(in srgb, var(--brand) 40%, transparent); }

.menu-toggle { display: none; }

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 90px 0 100px;
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, color-mix(in srgb, var(--brand) 10%, transparent), transparent),
    var(--bg);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: 7px 15px;
  border-radius: 30px;
  font-size: 13px;
  color: var(--text-soft);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 25%, transparent);
}
.hero h1 {
  font-size: 46px;
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 22px;
}
.hero h1 .gradient {
  background: linear-gradient(120deg, var(--brand), var(--p-mid));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-soft);
  max-width: 480px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.btn-ghost {
  padding: 12px 22px;
  border-radius: 11px;
  font-weight: 600;
  font-size: 14.5px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  transition: all var(--transition);
}
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }

.hero-stats { display: flex; gap: 40px; }
.stat-num {
  font-size: 30px; font-weight: 800; color: var(--text);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.5px;
}
.stat-label { font-size: 13px; color: var(--text-mute); }

/* Hero 右侧：产品矩阵 */
.product-orbit {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 440px;
  margin: 0 auto;
}
.orbit-center {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 130px; height: 130px;
  border-radius: 50%;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: grid; place-items: center;
  text-align: center;
  z-index: 5;
}
.orbit-center strong { font-size: 15px; display: block; }
.orbit-center span { font-size: 11px; color: var(--text-mute); }
.orbit-ring {
  position: absolute;
  inset: 20px;
  border: 1.5px dashed var(--border);
  border-radius: 50%;
  animation: spin 40s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.orbit-planet {
  position: absolute;
  width: 78px; height: 78px;
  border-radius: 20px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: grid; place-items: center;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  z-index: 6;
}
.orbit-planet:hover { transform: scale(1.12); box-shadow: var(--shadow-lg); }
.orbit-planet .pl-logo {
  width: 38px; height: 38px; border-radius: 11px;
  display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 15px;
}
.orbit-planet .pl-name { font-size: 9.5px; font-weight: 600; margin-top: 3px; line-height: 1.1; }
/* 行星定位 */
.orbit-planet:nth-child(1) { top: 4%;  left: 50%; transform: translateX(-50%); }
.orbit-planet:nth-child(2) { top: 30%; left: 88%; }
.orbit-planet:nth-child(3) { top: 72%; left: 82%; }
.orbit-planet:nth-child(4) { bottom: 2%; left: 50%; transform: translateX(-50%); }
.orbit-planet:nth-child(5) { top: 72%; left: 6%; }
.orbit-planet:nth-child(6) { top: 30%; left: 2%; }

/* ===== 通用区块 ===== */
.section { padding: 84px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { text-align: center; margin-bottom: 52px; }
.section-tag {
  display: inline-block;
  background: var(--brand-soft);
  color: var(--brand);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}
.section-head p { color: var(--text-soft); font-size: 16px; max-width: 560px; margin: 0 auto; }

/* 分类筛选 */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 9px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text-soft);
  transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--brand); color: var(--brand); }
.filter-btn.active {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--brand) 35%, transparent);
}

/* 产品卡片网格 */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.product-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--card-color, var(--brand));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.product-card:hover::before { transform: scaleX(1); }
.pc-head { display: flex; align-items: flex-start; gap: 15px; margin-bottom: 16px; }
.pc-logo {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 20px;
  flex-shrink: 0;
}
.pc-brand { font-size: 12px; color: var(--text-mute); font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; }
.pc-name { font-size: 19px; font-weight: 700; margin-top: 1px; }
.pc-cat { font-size: 11.5px; padding: 3px 9px; border-radius: 20px; font-weight: 600; margin-left: auto; flex-shrink: 0; }
.pc-desc { color: var(--text-soft); font-size: 14px; margin-bottom: 18px; min-height: 42px; }
.pc-features { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.pc-feature {
  font-size: 12px;
  background: var(--bg-soft);
  color: var(--text-soft);
  padding: 5px 11px;
  border-radius: 8px;
}
.pc-foot { display: flex; align-items: center; justify-content: space-between; }
.pc-link {
  font-weight: 600;
  font-size: 14px;
  color: var(--card-color, var(--brand));
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: gap var(--transition);
}
.pc-link:hover { gap: 9px; }

/* ===== 解决方案 Tabs ===== */
.tabs { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-bottom: 36px; }
.tab-btn {
  padding: 10px 22px;
  border-radius: 12px;
  font-size: 14.5px;
  font-weight: 600;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text-soft);
  transition: all var(--transition);
}
.tab-btn.active { background: var(--text); color: var(--bg-elev); border-color: var(--text); }
.tab-btn:not(.active):hover { border-color: var(--brand); color: var(--brand); }
.tab-panel { display: none; animation: fadeUp 0.4s ease; }
.tab-panel.active { display: block; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.tab-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 44px;
}
.tab-text h3 { font-size: 24px; font-weight: 800; margin-bottom: 14px; }
.tab-text p { color: var(--text-soft); margin-bottom: 22px; }
.tab-list { display: flex; flex-direction: column; gap: 12px; }
.tab-list li { display: flex; gap: 11px; align-items: flex-start; font-size: 14.5px; }
.tab-list li::before {
  content: '✓';
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  display: grid; place-items: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.tab-visual {
  height: 240px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--brand-soft), var(--p-soft, var(--brand-soft)));
  display: grid; place-items: center;
  font-size: 56px;
}

/* ===== 优势 ===== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}
.adv-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: all var(--transition);
}
.adv-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.adv-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--brand-soft);
  color: var(--brand);
  display: grid; place-items: center;
  font-size: 24px;
  margin-bottom: 18px;
}
.adv-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.adv-card p { color: var(--text-soft); font-size: 14px; }

/* ===== 客户案例 ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.case-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: all var(--transition);
}
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.case-head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.case-logo {
  width: 48px; height: 48px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--brand-soft), var(--p-soft));
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 15px;
  color: var(--brand);
  flex-shrink: 0;
}
.case-client { font-weight: 700; font-size: 15px; }
.case-industry { font-size: 12px; color: var(--text-mute); }
.case-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.case-summary { color: var(--text-soft); font-size: 13.5px; margin-bottom: 18px; }
.case-metrics { display: flex; gap: 20px; margin-bottom: 18px; padding-bottom: 18px; border-bottom: 1px solid var(--border-soft); }
.case-metric-value { font-size: 21px; font-weight: 800; color: var(--brand); }
.case-metric-label { font-size: 11.5px; color: var(--text-mute); }
.case-quote {
  font-size: 13.5px;
  color: var(--text-soft);
  font-style: italic;
  padding-left: 14px;
  border-left: 3px solid var(--brand);
  margin-bottom: 12px;
  line-height: 1.6;
}
.case-author { font-size: 12.5px; color: var(--text-mute); font-weight: 600; }

/* ===== 价格方案 ===== */
.pricing-note {
  text-align: center;
  color: var(--text-soft);
  font-size: 14px;
  margin-bottom: 40px;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}
.price-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 30px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.price-card.featured {
  border-color: var(--p, var(--brand));
  box-shadow: var(--shadow);
}
.price-badge {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  background: var(--p, var(--brand));
  color: #fff;
  font-size: 11.5px;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: 20px;
  white-space: nowrap;
}
.price-name { font-size: 17px; font-weight: 700; margin-bottom: 12px; }
.price-amount { font-size: 40px; font-weight: 800; letter-spacing: -1px; line-height: 1; margin-bottom: 6px; }
.price-amount small { font-size: 15px; font-weight: 600; color: var(--text-mute); }
.price-desc { font-size: 13px; color: var(--text-mute); margin-bottom: 24px; }
.price-features { text-align: left; display: flex; flex-direction: column; gap: 11px; margin-bottom: 28px; }
.price-features li { font-size: 13.5px; color: var(--text-soft); display: flex; gap: 9px; align-items: flex-start; }
.price-features li::before {
  content: '✓'; color: var(--success); font-weight: 700; flex-shrink: 0;
}
.price-btn {
  display: block;
  padding: 12px;
  border-radius: 11px;
  font-weight: 600;
  font-size: 14px;
  background: var(--bg-soft);
  color: var(--text);
  transition: all var(--transition);
  border: 1px solid var(--border);
}
.price-btn:hover { background: var(--brand); color: #fff; border-color: var(--brand); }
.price-card.featured .price-btn { background: var(--p, var(--brand)); color: #fff; border-color: var(--p, var(--brand)); }

/* ===== CTA ===== */
.cta {
  padding: 80px 0;
}
.cta-box {
  background: linear-gradient(135deg, var(--brand), var(--p-mid));
  border-radius: 24px;
  padding: 56px 40px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255,255,255,0.18), transparent 50%);
}
.cta-box h2 { font-size: 30px; font-weight: 800; margin-bottom: 12px; position: relative; }
.cta-box p { font-size: 15.5px; opacity: 0.9; margin-bottom: 28px; position: relative; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; }
.cta-btn {
  background: #fff;
  color: var(--brand);
  padding: 13px 28px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 14.5px;
  transition: all var(--transition);
}
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.18); }
.cta-btn-ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.6);
}
.cta-btn-ghost:hover { background: rgba(255,255,255,0.15); border-color: #fff; }

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-soft);
  padding: 64px 0 30px;
  border-top: 1px solid var(--border-soft);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}
.footer-brand p { color: var(--text-soft); font-size: 13.5px; max-width: 280px; margin-top: 14px; }
.footer-col h5 { font-size: 14px; font-weight: 700; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--text-soft); font-size: 13.5px; transition: color var(--transition); }
.footer-col a:hover { color: var(--brand); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
  font-size: 12.5px;
  color: var(--text-mute);
}

/* ===== 滚动出现动画 ===== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .hero { padding: 56px 0 70px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero h1 { font-size: 36px; }
  .product-orbit { max-width: 340px; }
  .tab-content { grid-template-columns: 1fr; padding: 30px; gap: 30px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 27px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links {
    position: fixed;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg-elev);
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-150%);
    transition: transform var(--transition);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { width: 100%; padding: 13px 16px; }
  .dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; background: var(--bg-soft); margin-top: 4px; display: none; }
  .dropdown.open .dropdown-menu { display: block; }
  .menu-toggle { display: grid; }
  .hero h1 { font-size: 31px; }
  .hero-stats { gap: 26px; }
  .stat-num { font-size: 25px; }
  .footer-grid { grid-template-columns: 1fr; }
  .product-grid, .case-grid { grid-template-columns: 1fr; }
}