:root {
  /* ===== Brand Colors ===== */
  --color-primary: #E60012;
  --color-primary-dark: #C40010;
  --color-primary-light: #FF1A2E;
  --color-primary-50: #FFF1F1;
  --color-primary-100: #FFE0E0;
  --color-primary-200: #FFB3B3;
  --color-primary-600: #B3000E;
  --color-primary-700: #8A000B;
  --color-primary-800: #600007;

  /* ===== Neutral Colors ===== */
  --color-bg: #FFFFFF;
  --color-bg-secondary: #F5F5F5;
  --color-bg-tertiary: #EEEEEE;
  --color-surface: #FFFFFF;
  --color-surface-elevated: #FFFFFF;
  --color-border: #E0E0E0;
  --color-border-light: #F0F0F0;
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #555555;
  --color-text-tertiary: #888888;
  --color-text-inverse: #FFFFFF;
  --color-text-on-primary: #FFFFFF;

  /* ===== Dark Sections ===== */
  --color-dark-bg: #1A1A1A;
  --color-dark-surface: #2A2A2A;
  --color-dark-text: #FFFFFF;
  --color-dark-text-secondary: #CCCCCC;
  --color-dark-border: #333333;

  /* ===== State Colors ===== */
  --state-success: #16A34A;
  --state-warning: #F59E0B;
  --state-error: #DC2626;
  --state-info: #2563EB;

  /* ===== Typography ===== */
  --font-display: "Source Han Sans CN", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Source Han Sans CN", "Noto Sans SC", "Microsoft YaHei", sans-serif;

  --text-xs: 12px;
  --text-sm: 13px;
  --text-base: 14px;
  --text-lg: 16px;
  --text-xl: 18px;
  --text-2xl: 20px;
  --text-3xl: 24px;
  --text-4xl: 30px;
  --text-5xl: 36px;
  --text-6xl: 48px;

  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  /* ===== Spacing ===== */
  --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;

  /* ===== Radius ===== */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-full: 9999px;

  /* ===== Shadows ===== */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.05);

  /* ===== Layout ===== */
  --container-max: 1200px;
  --container-wide: 1400px;
  --nav-height: 70px;
  --section-padding: 80px;
  
  --am-primary: #E60012;
  --am-primary-dark: #C40010;
  --am-text-primary: #1A1A1A;
  --am-text-secondary: #555555;
  --am-text-tertiary: #888888;
  --am-border: #E0E0E0;
  --am-bg-surface: #FFFFFF;
  --am-bg-page: #F5F5F5;
  --am-shadow: 0 25px 80px rgba(0, 0, 0, 0.35);
  --am-radius: 16px;
  --am-transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Typography Classes ===== */
.senje-h1 {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.senje-h2 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.senje-h3 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

.senje-h4 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

.senje-h5 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-medium);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

.senje-body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
}

.senje-body-lg {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--font-normal);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.senje-caption {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-text-tertiary);
}

.senje-overline {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  line-height: var(--leading-normal);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ===== Language Dropdown ===== */
.lang-dropdown {
  position: absolute;
  top: calc(var(--nav-height) - 8px);
  right: 0;
  background-color: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  width: 100%;
  min-width: unset;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 60;
  overflow: hidden;
}
.lang-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.lang-dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background-color 0.15s;
  text-decoration: none;
}
.lang-dropdown-item:hover {
  background-color: var(--color-primary-50);
  color: var(--color-primary);
}
.lang-dropdown-item.active {
  color: var(--color-primary);
  font-weight: var(--font-semibold);
}
.lang-dropdown-divider {
  height: 1px;
  background-color: var(--color-border-light);
  margin: 4px 0;
}

/* ===== Contact Form Validation ===== */
.form-error {
  display: block;
  color: var(--state-error);
  font-size: var(--text-xs);
  margin-top: 4px;
  line-height: 1.4;
}
.form-input.error {
  border-color: var(--state-error) !important;
}
.contact-form-submit .loading {
  position: relative;
  pointer-events: none;
}
.contact-form-submit .loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  margin: -9px 0 0 -9px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 0.6s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== Announcement Section ===== */
.announcement-section {
  background-color: #fff;
  padding: 80px 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23d32f2f' fill-opacity='0.08'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.announcement-wrapper {
  max-width: 100%;
  margin: 0 auto;
  position: relative;
}
.announcement-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid #eee;
  position: relative;
  z-index: 1;
}
.announcement-badge {
  display: inline-block;
  padding: 2px 10px;
  background-color: #999;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  border-radius: 3px;
}
.announcement-title {
  font-size: 24px;
  font-weight: 600;
  color: #d32f2f;
  margin: 0;
  line-height: 1.4;
}
.announcement-content {
  padding: 0;
  position: relative;
  z-index: 1;
}
.announcement-item {
  margin-bottom: 28px;
}
.announcement-item:last-of-type {
  margin-bottom: 0;
}
.announcement-subtitle {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 600;
  color: #333;
  margin: 0 0 16px 0;
}
.subtitle-line {
  display: inline-block;
  width: 4px;
  height: 20px;
  background-color: #d32f2f;
  flex-shrink: 0;
}
.announcement-content h1,
.announcement-content h2,
.announcement-content h3,
.announcement-content h4 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: #333;
  margin: 24px 0 16px 0;
  line-height: 1.4;
}
.announcement-content h1::before,
.announcement-content h2::before,
.announcement-content h3::before,
.announcement-content h4::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 20px;
  background-color: #d32f2f;
  flex-shrink: 0;
}
.announcement-content h1 {
  font-size: 22px;
}
.announcement-content h2 {
  font-size: 20px;
}
.announcement-content h3 {
  font-size: 18px;
}
.announcement-content h4 {
  font-size: 16px;
}
.announcement-content p {
  font-size: 15px;
  line-height: 2;
  color: #333;
  margin: 0 0 16px 0;
  text-align: justify;
  text-indent: 2em;
}
.announcement-content p:last-child {
  margin-bottom: 0;
}
.announcement-footer {
  margin-top: 32px;
  text-align: right;
}
.announcement-footer p {
  font-size: 15px;
  line-height: 2;
  color: #333;
  margin: 0;
  text-align: right;
  text-indent: 0 !important;
  font-weight: 600;
}
.search-submit-btn {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 8px 12px;
  transition: opacity 0.2s;
}
.search-submit-btn:hover {
  opacity: 0.7;
}
@media (max-width: 768px) {
  .announcement-section {
    padding: 20px 0;
  }
  .announcement-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 20px;
  }
  .announcement-title {
    font-size: 16px;
  }
  .announcement-subtitle {
    font-size: 15px;
  }
  .announcement-content p {
    font-size: 14px;
    text-indent: 1em;
  }
}