/* ============================================
   力赞信息 - 企业官网设计系统
   设计理念：简约大气、科技感、专业B2B
   ============================================ */

/* ========== CSS Custom Properties ========== */
:root {
  /* 主色调 - 深蓝科技 */
  --color-primary: #3B82F6;
  --color-primary-dark: #2563EB;
  --color-primary-light: #60A5FA;
  --color-accent: #06B6D4;
  --color-accent-light: #22D3EE;

  /* 深色背景 */
  --color-navy: #0B1120;
  --color-navy-light: #131C31;
  --color-navy-card: #1A2438;

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

  /* 文字色 */
  --color-text: #0F172A;
  --color-text-secondary: #475569;
  --color-text-muted: #94A3B8;
  --color-text-inverse: #F8FAFC;

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #3B82F6 0%, #06B6D4 100%);
  --gradient-hero: linear-gradient(135deg, #0B1120 0%, #1E3A5F 50%, #0B1120 100%);
  --gradient-glow: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 70%);

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.12);
  --shadow-blue: 0 8px 24px rgba(59, 130, 246, 0.25);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 间距 */
  --space-section: 100px;
  --container-max: 1200px;

  /* 过渡 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* 字体 */
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

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

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
}

/* ========== Container ========== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Section ========== */
.section {
  padding: var(--space-section) 0;
  position: relative;
}

.section--gray {
  background: var(--color-bg);
}

.section--dark {
  background: var(--color-navy);
  color: var(--color-text-inverse);
}

/* ========== Section Header ========== */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-header__eyebrow {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  padding: 6px 16px;
  background: rgba(59, 130, 246, 0.08);
  border-radius: var(--radius-full);
}

.section--dark .section-header__eyebrow {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-primary-light);
}

.section-header__title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section--dark .section-header__title {
  color: var(--color-white);
}

.section-header__subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.section--dark .section-header__subtitle {
  color: rgba(248, 250, 252, 0.7);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-blue);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.35);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn--outline:hover {
  border-color: var(--color-primary-light);
  background: rgba(255, 255, 255, 0.05);
}

.btn--dark-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn--dark-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(59, 130, 246, 0.04);
}

.btn--lg {
  padding: 16px 40px;
  font-size: 1rem;
}

.btn--sm {
  padding: 10px 24px;
  font-size: 0.875rem;
}

/* ========== Header / Navigation ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
  padding: 18px 0;
}

.header--scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  padding: 12px 0;
}

.header--dark {
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header--dark.header--scrolled {
  background: rgba(11, 17, 32, 0.95);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  transition: var(--transition);
}

.header--scrolled .logo {
  color: var(--color-text);
}

.header--dark .logo {
  color: var(--color-white);
}

.logo__img {
  height: 44px;
  width: auto;
  display: block;
  flex-shrink: 0;
  transition: var(--transition);
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.header--scrolled .logo__img {
  background: transparent;
  padding: 0;
  box-shadow: none;
}

.footer__brand .logo__img {
  background: white;
  padding: 4px 8px;
  height: 38px;
}

.logo__icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.125rem;
  font-weight: 800;
  flex-shrink: 0;
}

.logo__text {
  letter-spacing: -0.01em;
}

.logo__text span {
  color: var(--color-primary);
}

.header--dark .logo__text span {
  color: var(--color-primary-light);
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  transition: var(--transition);
  position: relative;
}

.header--scrolled .nav__link {
  color: var(--color-text-secondary);
}

.header--dark .nav__link {
  color: rgba(255, 255, 255, 0.85);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
}

.header--scrolled .nav__link:hover,
.header--scrolled .nav__link--active {
  color: var(--color-primary);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* Header CTA */
.header__cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header__phone {
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  gap: 8px;
}

.header--scrolled .header__phone {
  color: var(--color-text-secondary);
}

.header--dark .header__phone {
  color: rgba(255, 255, 255, 0.9);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1001;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}

.header--scrolled .menu-toggle span {
  background: var(--color-text);
}

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

.menu-toggle--open span:nth-child(2) {
  opacity: 0;
}

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

/* ========== Hero Section ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-navy);
  overflow: hidden;
  padding-top: 80px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 30%, rgba(59, 130, 246, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 70% 50% at 80% 70%, rgba(6, 182, 212, 0.12) 0%, transparent 60%);
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 80%);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
  color: var(--color-white);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary-light);
  margin-bottom: 28px;
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s infinite;
}

.hero__title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero__title-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  font-size: 1.1875rem;
  line-height: 1.8;
  color: rgba(248, 250, 252, 0.7);
  max-width: 680px;
  margin: 0 auto 40px;
}

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

/* Hero stats */
.hero__stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 64px;
  flex-wrap: wrap;
}

.hero__stat {
  text-align: center;
}

.hero__stat-value {
  font-size: 2.75rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.875rem;
  color: rgba(248, 250, 252, 0.6);
  margin-top: 8px;
}

/* ========== Page Hero (inner pages) ========== */
.page-hero {
  position: relative;
  background: var(--color-navy);
  padding: 160px 0 80px;
  overflow: hidden;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}

.page-hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 30% 40%, rgba(59, 130, 246, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 70% 60%, rgba(6, 182, 212, 0.1) 0%, transparent 60%);
}

.page-hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  max-width: 760px;
  margin: 0 auto;
}

.page-hero__eyebrow {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary-light);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  padding: 6px 16px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-full);
}

.page-hero__title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.page-hero__desc {
  font-size: 1.125rem;
  color: rgba(248, 250, 252, 0.7);
  line-height: 1.8;
}

/* ========== Feature Cards Grid ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--color-primary);
  transition: var(--transition);
}

.feature-card:hover .feature-card__icon {
  background: var(--gradient-primary);
  color: white;
}

.feature-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.feature-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========== Service / Product Cards ========== */
.service-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.service-card__header {
  padding: 36px 28px 28px;
  background: var(--gradient-hero);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.service-card__header::after {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.1);
}

.service-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-primary-light);
  position: relative;
  z-index: 1;
}

.service-card__title {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.service-card__subtitle {
  font-size: 0.875rem;
  color: rgba(248, 250, 252, 0.6);
  position: relative;
  z-index: 1;
}

.service-card__body {
  padding: 28px;
}

.service-card__list {
  margin-bottom: 24px;
}

.service-card__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
  line-height: 1.6;
}

.service-card__list li svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-primary);
}

/* ========== Process Steps ========== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0.2;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.process-step__num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin: 0 auto 16px;
  transition: var(--transition);
  position: relative;
}

.process-step__num::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0;
  z-index: -1;
  transition: var(--transition);
}

.process-step:hover .process-step__num {
  border-color: var(--color-primary);
  transform: scale(1.1);
  color: white;
  background: var(--gradient-primary);
}

.process-step__title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.process-step__desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

/* ========== Pricing Cards ========== */
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.pricing-card--featured {
  border-color: var(--color-primary);
  border-width: 2px;
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.03) 0%, var(--color-white) 30%);
}

.pricing-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 20px;
  background: var(--gradient-primary);
  color: white;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
  box-shadow: var(--shadow-blue);
}

.pricing-card__name {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.pricing-card__tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.pricing-card__price {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border-light);
}

.pricing-card__price-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-text);
}

.pricing-card__price-unit {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.pricing-card__features {
  flex: 1;
  margin-bottom: 28px;
}

.pricing-card__features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
  line-height: 1.6;
}

.pricing-card__features li svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-primary);
}

/* ========== Platform Cards ========== */
.platform-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.platform-card {
  background: var(--color-navy-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}

.platform-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-4px);
  background: rgba(59, 130, 246, 0.05);
}

.platform-card__name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 6px;
}

.platform-card__eco {
  font-size: 0.8125rem;
  color: var(--color-primary-light);
  margin-bottom: 16px;
}

.platform-card__strategy {
  font-size: 0.875rem;
  color: rgba(248, 250, 252, 0.65);
  line-height: 1.7;
}

/* ========== Case Study ========== */
.case-study {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.case-study__info h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
}

.case-study__bg {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}

.case-study__results {
  display: flex;
  gap: 32px;
  margin-bottom: 28px;
}

.case-study__result {
  flex: 1;
}

.case-study__result-value {
  font-size: 2.25rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.case-study__result-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.case-study__points {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.case-study__point {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.case-study__point-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  flex-shrink: 0;
  line-height: 1;
}

.case-study__point-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.case-study__point-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========== Advantage Cards ========== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  text-align: center;
  padding: 36px 24px;
  border-radius: var(--radius-lg);
  background: var(--color-navy-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition);
}

.advantage-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  background: rgba(59, 130, 246, 0.05);
  transform: translateY(-4px);
}

.advantage-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-light);
}

.advantage-card__title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 10px;
}

.advantage-card__desc {
  font-size: 0.875rem;
  color: rgba(248, 250, 252, 0.6);
  line-height: 1.7;
}

/* ========== Comparison Section ========== */
.comparison-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.comparison-item {
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  text-align: center;
}

.comparison-item--old {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
}

.comparison-item--new {
  background: var(--gradient-hero);
  color: var(--color-white);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.comparison-item__label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  color: var(--color-text-muted);
}

.comparison-item--new .comparison-item__label {
  color: var(--color-primary-light);
}

.comparison-item__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.comparison-item__desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.comparison-item--new .comparison-item__desc {
  color: rgba(248, 250, 252, 0.7);
}

/* ========== Stats Bar ========== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 32px 20px;
}

.stat-item__value {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-item__label {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-top: 10px;
}

.section--dark .stat-item__label {
  color: rgba(248, 250, 252, 0.6);
}

/* ========== Timeline ========== */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  opacity: 0.2;
}

.timeline__item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 40px;
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: 12px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  z-index: 1;
}

.timeline__year {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.timeline__title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.timeline__desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========== Values Grid ========== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.value-card {
  padding: 36px 28px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

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

.value-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.value-card__title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.value-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========== Contact Section ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info__item {
  display: flex;
  gap: 20px;
  margin-bottom: 32px;
}

.contact-info__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-info__label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact-info__value {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

.contact-form {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.contact-form__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.contact-form__subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-success {
  display: none;
  padding: 16px 20px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-sm);
  color: #16a34a;
  font-size: 0.9375rem;
  margin-bottom: 20px;
}

.form-success--show {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ========== CTA Section ========== */
.cta-section {
  position: relative;
  background: var(--color-navy);
  padding: 80px 0;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 30% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 70% 50%, rgba(6, 182, 212, 0.12) 0%, transparent 60%);
}

.cta-section__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-section__title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-section__desc {
  font-size: 1.0625rem;
  color: rgba(248, 250, 252, 0.7);
  margin-bottom: 32px;
}

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

/* ========== Footer ========== */
.footer {
  background: var(--color-navy);
  color: rgba(248, 250, 252, 0.7);
  padding: 64px 0 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

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

.footer__brand {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer__desc {
  font-size: 0.9375rem;
  line-height: 1.8;
  margin-bottom: 20px;
  max-width: 360px;
}

.footer__col-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer__col-links li {
  margin-bottom: 12px;
}

.footer__col-links a {
  font-size: 0.9375rem;
  color: rgba(248, 250, 252, 0.6);
  transition: var(--transition);
}

.footer__col-links a:hover {
  color: var(--color-primary-light);
}

.footer__bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: rgba(248, 250, 252, 0.5);
  flex-wrap: wrap;
  gap: 12px;
}

.footer__bottom a {
  color: rgba(248, 250, 252, 0.5);
  transition: var(--transition);
}

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

/* ========== Language Switcher ========== */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  margin-left: 8px;
}

.header--scrolled .lang-switch {
  background: var(--color-bg-alt);
  border-color: var(--color-border);
}

.lang-switch__link {
  padding: 4px 12px;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
  white-space: nowrap;
}

.header--scrolled .lang-switch__link {
  color: var(--color-text-muted);
}

.lang-switch__link--active {
  background: var(--gradient-primary);
  color: white;
}

.lang-switch__link:hover:not(.lang-switch__link--active) {
  color: var(--color-primary-light);
}

.header--scrolled .lang-switch__link:hover:not(.lang-switch__link--active) {
  color: var(--color-primary);
}

.nav--mobile .lang-switch {
  margin: 16px 0 0;
  align-self: flex-start;
}

.nav--mobile .lang-switch__link {
  color: var(--color-text-muted);
}

.nav--mobile .lang-switch__link--active {
  color: white;
}

/* ========== Overseas GEO Section ========== */
.overseas-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(6, 182, 212, 0.1);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section--dark .overseas-badge {
  background: rgba(6, 182, 212, 0.15);
  color: var(--color-accent-light);
}

/* AI Platform Stats (Overseas) */
.ai-platform-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}

.ai-platform-card {
  background: var(--color-navy-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}

.ai-platform-card:hover {
  border-color: rgba(6, 182, 212, 0.3);
  transform: translateY(-4px);
}

.ai-platform-card__name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.ai-platform-card__value {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #22D3EE, #3B82F6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.ai-platform-card__desc {
  font-size: 0.8125rem;
  color: rgba(248, 250, 252, 0.6);
  margin-top: 8px;
}

/* 3+5+2 Architecture */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.arch-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.arch-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent);
}

.arch-card__num {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, #06B6D4, #3B82F6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 12px;
}

.arch-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.arch-card__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.arch-card__list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.arch-card__list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
  margin-top: 8px;
}

/* Channel Grid (5 feeding channels) */
.channel-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.channel-card {
  background: var(--color-navy-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  transition: var(--transition);
}

.channel-card:hover {
  border-color: rgba(6, 182, 212, 0.3);
  transform: translateY(-4px);
  background: rgba(6, 182, 212, 0.05);
}

.channel-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-light);
  font-size: 1.5rem;
  font-weight: 700;
}

.channel-card__name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 4px;
}

.channel-card__desc {
  font-size: 0.75rem;
  color: rgba(248, 250, 252, 0.5);
}

/* Dual Engine Cards */
.dual-engine-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.dual-engine-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.dual-engine-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #06B6D4, #3B82F6);
}

.dual-engine-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.dual-engine-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-accent);
}

.dual-engine-card__title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.dual-engine-card__subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.dual-engine-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.dual-engine-card__stats {
  display: flex;
  gap: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

.dual-engine-card__stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.dual-engine-card__stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Mobile only elements - hidden on desktop */
.nav-backdrop,
.mobile-cta,
.mobile-phone {
  display: none;
}

/* ========== Animations ========== */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.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; }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .hero__title {
    font-size: 2.75rem;
  }

  .section-header__title {
    font-size: 2rem;
  }

  .service-cards,
  .pricing-cards {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

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

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

  .process-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .process-steps::before {
    display: none;
  }

  .case-study {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

@media (max-width: 768px) {
  .header {
    padding: 12px 0;
  }

  .header__inner {
    gap: 8px;
  }

  .nav,
  .header__phone {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .logo__img {
    height: 36px;
  }

  /* Show lang-switch in mobile header (compact) */
  .header__cta .lang-switch {
    display: inline-flex;
    margin-left: 0;
    padding: 3px;
  }

  .header__cta .lang-switch__link {
    padding: 4px 8px;
    font-size: 0.75rem;
  }

  .header__cta {
    gap: 8px;
  }

  .header__cta .btn--sm {
    padding: 8px 14px;
    font-size: 0.8125rem;
  }

  /* Mobile backdrop */
  .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(11, 17, 32, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 998;
  }

  .nav-backdrop--show {
    opacity: 1;
    visibility: visible;
  }

  /* Mobile nav drawer */
  .nav--mobile {
    display: flex;
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    max-width: 85vw;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    padding: 80px 24px 32px;
    gap: 0;
    transform: translateX(100%);
    transition: var(--transition);
    box-shadow: var(--shadow-xl);
    z-index: 999;
    overflow-y: auto;
  }

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

  .nav--mobile .nav__link {
    color: var(--color-text);
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 1rem;
  }

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

  .nav--mobile .nav__link--active::after {
    display: none;
  }

  .nav--mobile .lang-switch {
    margin: 24px 0 0;
    align-self: stretch;
    justify-content: center;
    background: var(--color-bg-alt);
    border-color: var(--color-border);
    padding: 6px;
  }

  .nav--mobile .lang-switch__link {
    color: var(--color-text-secondary);
    flex: 1;
    text-align: center;
    padding: 8px 16px;
    font-size: 0.9375rem;
  }

  .nav--mobile .lang-switch__link--active {
    color: white;
  }

  .nav--mobile .mobile-cta {
    display: block;
    margin-top: 24px;
    width: 100%;
    text-align: center;
  }

  .nav--mobile .mobile-cta .btn {
    width: 100%;
  }

  .nav--mobile .mobile-phone {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    padding: 12px;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9375rem;
  }

  .hero__title {
    font-size: 2.25rem;
  }

  .hero__desc {
    font-size: 1rem;
  }

  .hero__stats {
    gap: 32px;
  }

  .hero__stat-value {
    font-size: 2rem;
  }

  .page-hero {
    padding: 120px 0 60px;
  }

  .page-hero__title {
    font-size: 2rem;
  }

  .section-header__title {
    font-size: 1.75rem;
  }

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

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

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

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

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .comparison-box {
    grid-template-columns: 1fr;
  }

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

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

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

  .case-study__results {
    flex-direction: column;
    gap: 20px;
  }
}

@media (max-width: 1024px) {
  .ai-platform-stats {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 40px auto 0;
  }

  .arch-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .channel-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .dual-engine-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
}

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

  /* Make sure lang switch is shown in mobile drawer */
  .nav--mobile .lang-switch {
    display: inline-flex;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: 1.875rem;
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
  }

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

  .process-steps {
    grid-template-columns: 1fr;
  }

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

  .dual-engine-card__stats {
    flex-direction: column;
    gap: 12px;
  }

  /* Compact lang switch on very small screens */
  .header__cta .btn--sm {
    display: none;
  }
}