/* ================================================================
 * 佐佐佑 官网 — 设计系统 v1.0
 * 山西佐佐佑生物科技有限公司 | 专业信息服务平台
 * ================================================================ */

/* ============================================================
 * 1. CSS 自定义属性（Design Tokens）
 * ============================================================ */
:root {
  /* --- 品牌色 --- */
  --color-primary:        #0D9488;
  --color-primary-hover:  #0F766E;
  --color-primary-light:  #F0FDFA;
  --color-primary-soft:   #CCFBF1;
  --color-primary-ring:   rgba(13,148,136,.3);

  /* --- 辅助色 --- */
  --color-secondary:       #2563EB;
  --color-secondary-hover: #1D4ED8;
  --color-secondary-light: #EFF6FF;

  /* --- 功能色 --- */
  --color-accent:         #F59E0B;
  --color-accent-light:   #FFFBEB;
  --color-success:        #10B981;
  --color-success-light:  #ECFDF5;
  --color-warning:        #F59E0B;
  --color-warning-light:  #FFFBEB;
  --color-danger:         #EF4444;
  --color-danger-light:   #FEF2F2;

  /* --- 中性色 --- */
  --color-white:          #FFFFFF;
  --color-bg:             #F8FAFC;
  --color-bg-alt:         #F1F5F9;
  --color-bg-card:        #FFFFFF;
  --color-border:         #E2E8F0;
  --color-border-light:   #F1F5F9;

  /* --- 文字色 --- */
  --color-text:           #0F172A;
  --color-text-secondary: #475569;
  --color-text-tertiary:  #94A3B8;
  --color-text-inverse:   #FFFFFF;
  --color-text-link:      #0D9488;

  /* --- 阴影 --- */
  --shadow-xs:  0 1px 2px 0 rgba(0,0,0,.03);
  --shadow-sm:  0 1px 3px 0 rgba(0,0,0,.04), 0 1px 2px -1px rgba(0,0,0,.03);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,.05), 0 2px 4px -2px rgba(0,0,0,.04);
  --shadow-lg:  0 10px 15px -3px rgba(0,0,0,.06), 0 4px 6px -4px rgba(0,0,0,.04);
  --shadow-xl:  0 20px 25px -5px rgba(0,0,0,.07), 0 8px 10px -6px rgba(0,0,0,.04);
  --shadow-button: 0 1px 3px rgba(13,148,136,.25), 0 2px 8px rgba(13,148,136,.15);

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

  /* --- 间距（8px 基准）--- */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* --- 字体 --- */
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;

  /* --- 过渡 --- */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ============================================================
 * 2. Reset & 全局样式
 * ============================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

/* ============================================================
 * 3. 布局容器
 * ============================================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* ============================================================
 * 4. 通用 Section 标题
 * ============================================================ */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-label {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  letter-spacing: .5px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.3;
}

.section-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-inline: auto;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
 * 5. 按钮
 * ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 15px;
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-lg {
  font-size: 16px;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
}

.btn-sm {
  font-size: 14px;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-button);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(13,148,136,.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ============================================================
 * 6. 导航栏
 * ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(255,255,255,.96);
  border-bottom-color: var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}

.nav-logo .logo-icon {
  display: flex;
  flex-shrink: 0;
}

/* 导航链接 */
.nav-links {
  display: flex;
  gap: var(--space-1);
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
 * 7. Hero 主视觉区
 * ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  padding-bottom: var(--space-16);
  overflow: hidden;
  background: linear-gradient(135deg, #F0FDFA 0%, #EFF6FF 50%, #F8FAFC 100%);
}

/* 背景装饰 */
.hero-bg-decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.decor-circle {
  position: absolute;
  border-radius: 50%;
  opacity: .15;
}

.decor-circle-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
  top: -200px;
  right: -150px;
}

.decor-circle-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
  bottom: -100px;
  left: -100px;
}

.decor-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13,148,136,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13,148,136,.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

/* 文字区 */
.hero-text {
  max-width: 540px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary-soft);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

.hero-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.hero-cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Hero 视觉装饰 */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-illustration {
  position: relative;
  width: 380px;
  height: 380px;
}

.illust-card {
  position: absolute;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  animation: float-card 6s ease-in-out infinite;
}

.illust-card.c1 {
  top: 20px;
  left: 40px;
  width: 160px;
  animation-delay: 0s;
}

.illust-card.c2 {
  top: 120px;
  right: 20px;
  width: 150px;
  animation-delay: -2s;
}

.illust-card.c3 {
  bottom: 20px;
  left: 80px;
  width: 140px;
  animation-delay: -4s;
}

.illust-card .ill-icon {
  font-size: 28px;
}

.illust-card .ill-bar {
  height: 6px;
  background: var(--color-primary);
  border-radius: 3px;
  width: 100%;
  opacity: .6;
}

.illust-card .ill-bar.short {
  width: 60%;
  opacity: .35;
}

.illust-card .ill-lines {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.illust-card .ill-lines span {
  height: 4px;
  background: var(--color-secondary);
  border-radius: 2px;
  opacity: .4;
}

.illust-card .ill-lines span:nth-child(1) { width: 100%; }
.illust-card .ill-lines span:nth-child(2) { width: 75%; }
.illust-card .ill-lines span:nth-child(3) { width: 50%; }

.illust-card .ill-dots {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.illust-card .ill-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: .5;
}

.illust-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 2px dashed var(--color-primary-soft);
  animation: spin-slow 20s linear infinite;
}

@keyframes float-card {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes spin-slow {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ============================================================
 * 8. 关于我们
 * ============================================================ */
.about {
  padding: var(--space-24) 0;
  background: var(--color-white);
}

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

.about-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.about-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}

.about-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.about-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ============================================================
 * 9. 业务领域
 * ============================================================ */
.business {
  padding: var(--space-24) 0;
  background: var(--color-bg);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.business-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.business-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.bc-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}

.bc-icon.teal {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.bc-icon.blue {
  background: var(--color-secondary-light);
  color: var(--color-secondary);
}

.bc-icon.amber {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.bc-icon.green {
  background: var(--color-success-light);
  color: var(--color-success);
}

.business-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.business-card > p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-5);
  flex: 1;
}

.bc-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.bc-features li {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-tertiary);
  padding-left: var(--space-5);
  position: relative;
}

.bc-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 2px;
  background: var(--color-primary);
  opacity: .4;
  border-radius: 1px;
}

/* ============================================================
 * 10. 核心优势
 * ============================================================ */
.advantages {
  padding: var(--space-24) 0;
  background: var(--color-white);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.adv-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  border: 1px solid var(--color-border-light);
  text-align: center;
  transition: all var(--transition-base);
}

.adv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.adv-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}

.adv-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.adv-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================================
 * 11. 数据展示条
 * ============================================================ */
.stats-bar {
  padding: var(--space-16) 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  position: relative;
  overflow: hidden;
}

.stats-bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

.stats-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  text-align: center;
}

.stat-item {
  color: var(--color-text-inverse);
}

.stat-number {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}

.stat-plus {
  font-size: 24px;
  font-weight: 600;
  opacity: .7;
}

.stat-unit {
  font-size: 20px;
  font-weight: 500;
  opacity: .7;
}

.stat-pct {
  font-size: inherit;
}

.stat-label {
  font-size: 15px;
  opacity: .8;
  font-weight: 500;
}

/* ============================================================
 * 12. 联系我们
 * ============================================================ */
.contact {
  padding: var(--space-24) 0;
  background: var(--color-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  max-width: 900px;
  margin-inline: auto;
}

.contact-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-soft);
}

.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.contact-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.contact-detail {
  font-size: 15px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ============================================================
 * 13. 页脚
 * ============================================================ */
.footer {
  padding: var(--space-16) 0 var(--space-10);
  background: var(--color-text);
  color: var(--color-text-inverse);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: 20px;
  font-weight: 700;
}

.footer-logo .logo-icon {
  display: flex;
  flex-shrink: 0;
}

.footer-brand > p {
  font-size: 14px;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-1);
}

.footer-slogan {
  font-size: 13px !important;
  color: #64748B !important;
}

.footer-links h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text-inverse);
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-3);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-text-inverse);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-contact span {
  font-size: 14px;
  color: var(--color-text-tertiary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,.1);
}

.footer-copyright p {
  font-size: 13px;
  color: #64748B;
}

.footer-legal {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}

.footer-legal a {
  font-size: 13px;
  color: #64748B;
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--color-text-inverse);
}

.icp-link {
  font-weight: 500;
}

/* ============================================================
 * 14. 滚动动画
 * ============================================================ */
[data-animate] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .6s ease, transform .6s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
 * 15. 响应式 — 平板 (≤ 960px)
 * ============================================================ */
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-10);
  }

  .hero-text {
    max-width: 100%;
    order: 1;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-visual {
    order: 0;
  }

  .hero-illustration {
    width: 280px;
    height: 280px;
  }

  .illust-card.c1 { top: 10px; left: 20px; width: 130px; }
  .illust-card.c2 { top: 90px; right: 10px; width: 120px; }
  .illust-card.c3 { bottom: 10px; left: 50px; width: 110px; }
  .illust-ring { width: 150px; height: 150px; }

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

  .business-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 600px;
    margin-inline: auto;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

/* ============================================================
 * 16. 响应式 — 手机 (≤ 640px)
 * ============================================================ */
@media (max-width: 640px) {
  .container {
    padding-inline: var(--space-4);
  }

  /* 移动端导航 */
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(16px);
    padding: var(--space-4);
    gap: var(--space-1);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
  }

  .nav-links.mobile-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
  }

  .mobile-menu-btn {
    display: flex;
  }

  /* Hero */
  .hero {
    min-height: auto;
    padding-top: 100px;
    padding-bottom: var(--space-12);
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-illustration {
    width: 220px;
    height: 220px;
  }

  .illust-card.c1 { top: 0; left: 0; width: 110px; padding: var(--space-3); }
  .illust-card.c2 { top: 70px; right: 0; width: 100px; padding: var(--space-3); }
  .illust-card.c3 { bottom: 0; left: 30px; width: 90px; padding: var(--space-3); }
  .illust-ring { width: 120px; height: 120px; }

  .illust-card .ill-icon { font-size: 22px; }

  /* Sections */
  .about, .business, .advantages, .contact {
    padding: var(--space-16) 0;
  }

  .business-grid,
  .adv-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

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