:root {
  --color-primary: #f97316;
  --color-primary-strong: #ea580c;
  --color-accent: #fdba74;
  --color-background: #fff7ed;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "Noto Sans", "Liberation Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --shadow-sm: 0 1px 2px rgba(2, 6, 23, 0.06);
  --shadow-md: 0 8px 20px rgba(2, 6, 23, 0.08);
  --shadow-lg: 0 18px 40px rgba(2, 6, 23, 0.12);
  --ring: 0 0 0 0.25rem rgba(249, 115, 22, 0.25);
}

html,
body {
  height: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-background);
}

::selection {
  background: rgba(249, 115, 22, 0.25);
}

.sy-container {
  max-width: 1200px;
}

.navbar-brand img {
  height: 40px;
  width: auto;
}

@media (max-width: 575.98px) {
  .navbar-brand img {
    height: 32px;
  }
}

.sy-section {
  padding: 56px 0;
}

@media (max-width: 767.98px) {
  .sy-section {
    padding: 40px 0;
  }
}

.sy-section-title {
  letter-spacing: -0.01em;
}

.sy-muted {
  color: var(--color-text-muted);
}

.sy-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
}

.sy-card-hover {
  transition: box-shadow 200ms ease, border-color 200ms ease;
}

.sy-card-hover:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(249, 115, 22, 0.35);
}

.sy-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem;
  border: 1px solid rgba(249, 115, 22, 0.25);
  background: rgba(255, 237, 213, 0.9);
  color: #9a3412;
}

.sy-btn-primary {
  --bs-btn-bg: var(--color-primary-strong);
  --bs-btn-border-color: var(--color-primary-strong);
  --bs-btn-hover-bg: #c2410c;
  --bs-btn-hover-border-color: #c2410c;
  --bs-btn-focus-shadow-rgb: 249, 115, 22;
}

.sy-btn-outline {
  --bs-btn-color: var(--color-text);
  --bs-btn-border-color: rgba(15, 23, 42, 0.18);
  --bs-btn-hover-bg: rgba(15, 23, 42, 0.04);
  --bs-btn-hover-border-color: rgba(15, 23, 42, 0.18);
  --bs-btn-focus-shadow-rgb: 15, 23, 42;
}

.sy-focusable:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: 10px;
}

.sy-hero {
  position: relative;
  overflow: hidden;
  background: #0b1220;
}

.sy-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(2, 6, 23, 0.82), rgba(2, 6, 23, 0.35));
  pointer-events: none;
  z-index: 1;
}

.sy-hero > * {
  position: relative;
  z-index: 2;
}

.sy-hero .carousel-item img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  object-position: center;
  opacity: 0.85;
}

@media (max-width: 767.98px) {
  .sy-hero .carousel-item img {
    height: 520px;
  }
}

.sy-float-btn {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1040;
  border-radius: 999px;
  box-shadow: var(--shadow-lg);
}

.sy-skeleton {
  border-radius: 12px;
  background: linear-gradient(90deg, rgba(148, 163, 184, 0.18), rgba(148, 163, 184, 0.28), rgba(148, 163, 184, 0.18));
  background-size: 200% 100%;
  animation: sy-skeleton 1.2s ease-in-out infinite;
}

@keyframes sy-skeleton {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sy-card-hover,
  .carousel,
  .carousel-item {
    transition: none !important;
  }
  .sy-skeleton {
    animation: none !important;
  }
}