/* ===== CSS Variables ===== */
:root {
  --color-primary: #0f172a;
  --color-secondary: #1e293b;
  --color-accent: #e94560;
  --color-accent-dark: #c73651;
  --color-accent-light: #ff6b85;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e2e8f0;
  --font-sans: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
  --nav-height: 72px;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.14);
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ===== Navigation ===== */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-nav.nav-scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo { display: flex; align-items: center; flex-shrink: 0; }
.logo-img { height: 36px; width: auto; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.nav-link {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.12); }
.nav-link-active { color: #fff !important; font-weight: 600; }
.site-nav.nav-scrolled .nav-link { color: var(--color-text-muted); }
.site-nav.nav-scrolled .nav-link:hover { color: var(--color-accent); background: rgba(233,69,96,0.06); }
.site-nav.nav-scrolled .nav-link-active { color: var(--color-accent) !important; }
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.lang-toggle-btn {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1.5px solid rgba(255,255,255,0.5);
  color: rgba(255,255,255,0.9);
  font-size: 0.82rem;
  font-weight: 500;
  transition: all 0.2s;
}
.lang-toggle-btn:hover { background: rgba(255,255,255,0.15); border-color: #fff; color: #fff; }
.site-nav.nav-scrolled .lang-toggle-btn { border-color: var(--color-border); color: var(--color-text-muted); }
.site-nav.nav-scrolled .lang-toggle-btn:hover { border-color: var(--color-accent); color: var(--color-accent); background: rgba(233,69,96,0.05); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  background: var(--color-accent);
  color: #fff !important;
  border-radius: 24px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: background 0.2s, transform 0.15s;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--color-accent-dark); transform: translateY(-1px); }
.menu-toggle-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
  transition: background 0.2s;
}
.menu-toggle-btn:hover { background: rgba(255,255,255,0.12); }
.site-nav.nav-scrolled .menu-toggle-btn:hover { background: var(--color-bg-alt); }
.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: rgba(255,255,255,0.9);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.site-nav.nav-scrolled .hamburger-line { background: var(--color-text); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0; right: 0;
  background: #fff;
  box-shadow: var(--shadow-md);
  border-top: 1px solid var(--color-border);
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.mobile-menu.menu-open { transform: translateY(0); opacity: 1; pointer-events: all; }
.mobile-menu-inner { padding: 16px 24px 24px; display: flex; flex-direction: column; gap: 4px; }
.mobile-nav-link {
  display: block;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  transition: background 0.2s, color 0.2s;
}
.mobile-nav-link:hover { background: var(--color-bg-alt); color: var(--color-accent); }
.mobile-lang-btn {
  margin-top: 8px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: left;
  transition: all 0.2s;
}
.mobile-lang-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ===== Hero ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 40%, #1e293b 100%);
  padding-top: var(--nav-height);
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(233,69,96,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 80%, rgba(99,102,241,0.12) 0%, transparent 60%);
  pointer-events: none;
}
.hero-grid {
  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: 48px 48px;
  pointer-events: none;
}

/* ===== Page Hero (inner pages) ===== */
.page-hero {
  padding: calc(var(--nav-height) + 60px) 0 60px;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 80% at 50% 100%, rgba(233,69,96,0.15) 0%, transparent 70%);
  pointer-events: none;
}

/* ===== Section Helpers ===== */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  background: rgba(233,69,96,0.1);
  color: var(--color-accent);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.7;
}
.accent-divider {
  width: 48px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 2px;
  margin: 16px 0 24px;
}
.accent-divider.center { margin: 16px auto 24px; }

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 28px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 14px rgba(233,69,96,0.35);
}
.btn-primary:hover { background: var(--color-accent-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(233,69,96,0.4); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-radius: 28px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid rgba(255,255,255,0.25);
  transition: background 0.2s, transform 0.15s;
  backdrop-filter: blur(8px);
}
.btn-secondary:hover { background: rgba(255,255,255,0.18); transform: translateY(-2px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1.5px solid var(--color-accent);
  color: var(--color-accent);
  border-radius: 24px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.btn-outline:hover { background: var(--color-accent); color: #fff; transform: translateY(-1px); }

/* ===== Cards ===== */
.card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-body { padding: 28px; }

/* ===== Stats Bar ===== */
.stats-bar { background: var(--color-primary); padding: 32px 0; }

/* ===== Feature List ===== */
.feature-list { display: flex; flex-direction: column; gap: 12px; }
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--color-text);
}
.feature-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
  margin-top: 6px;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--color-accent) 0%, #c73651 100%);
  padding: 80px 0;
  text-align: center;
}

/* ===== Footer ===== */
.site-footer { background: var(--color-primary); color: rgba(255,255,255,0.75); }
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
}
.footer-logo { height: 36px; width: auto; margin-bottom: 16px; }
.footer-tagline { font-size: 0.9rem; color: rgba(255,255,255,0.55); margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  transition: background 0.2s, color 0.2s;
}
.social-link:hover { background: var(--color-accent); color: #fff; }
.footer-heading {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}
.footer-links ul, .footer-contact ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a, .footer-contact a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  transition: color 0.2s;
}
.footer-links a:hover, .footer-contact a:hover { color: var(--color-accent); }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}
.footer-contact li svg { flex-shrink: 0; margin-top: 2px; opacity: 0.6; }
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: 0.82rem; color: rgba(255,255,255,0.4); }
.footer-legal { display: flex; gap: 20px; }
.footer-legal a { font-size: 0.82rem; color: rgba(255,255,255,0.4); transition: color 0.2s; }
.footer-legal a:hover { color: rgba(255,255,255,0.8); }

/* ===== Utility ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-pad { padding: 80px 0; }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.text-center { text-align: center; }

/* ===== Swiper Overrides ===== */
.swiper-pagination-bullet-active { background: var(--color-accent) !important; }
.swiper-button-next, .swiper-button-prev { color: var(--color-accent) !important; }

/* ===== FAQ Accordion ===== */
details { border-bottom: 1px solid var(--color-border); }
details:first-of-type { border-top: 1px solid var(--color-border); }
summary {
  padding: 20px 0;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  color: var(--color-primary);
  transition: color 0.2s;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-accent);
  transition: transform 0.25s;
  flex-shrink: 0;
  margin-left: 16px;
}
details[open] summary::after { transform: rotate(45deg); }
details[open] summary { color: var(--color-accent); }
.faq-answer { padding: 0 0 20px; font-size: 0.95rem; color: var(--color-text-muted); line-height: 1.7; }

/* ===== Contact Form ===== */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 0.875rem; font-weight: 600; color: var(--color-text); }
.form-input, .form-textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  font: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.form-input:focus, .form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(233,69,96,0.12);
}
.form-textarea { resize: vertical; min-height: 140px; }

/* ===== Workflow Steps ===== */
.workflow-step { display: flex; gap: 24px; align-items: flex-start; }
.step-num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.25;
  line-height: 1;
  flex-shrink: 0;
  width: 72px;
}

/* ===== Cases Filter ===== */
.filter-tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-tab {
  padding: 8px 18px;
  border-radius: 20px;
  border: 1.5px solid var(--color-border);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: #fff;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-tab:hover, .filter-tab.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.case-card-hidden { display: none !important; }

/* ===== Value Cards ===== */
.value-card {
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: #fff;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-accent); }
.value-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(233,69,96,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--color-accent);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-container { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .nav-links, .nav-cta { display: none; }
  .menu-toggle-btn { display: flex; }
  .mobile-menu { display: block; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-container { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-pad { padding: 56px 0; }
  .cta-section { padding: 56px 0; }
  .workflow-step { flex-direction: column; gap: 8px; }
  .step-num { font-size: 2rem; width: auto; }
  .hero-section { min-height: 85vh; }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .filter-tab { padding: 6px 14px; font-size: 0.82rem; }
}

/* ===== Section Utility ===== */
.section { padding: 80px 0; }
.section-alt { padding: 80px 0; background: var(--color-bg-alt); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header .section-subtitle { margin: 0 auto; }

/* ===== Contact Layout ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
}
.contact-info-panel {
  background: linear-gradient(145deg, var(--color-primary) 0%, #1e1b4b 100%);
  border-radius: var(--radius);
  padding: 40px 36px;
  color: #fff;
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}
.contact-info-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 32px;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}
.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(233,69,96,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-light);
  flex-shrink: 0;
}
.contact-item-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.contact-item-value {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.88);
  line-height: 1.5;
}
.contact-link:hover { color: var(--color-accent-light); }
.contact-social {
  display: flex;
  gap: 10px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.12);
}
.contact-social .social-link {
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.7);
}
.contact-social .social-link:hover { background: var(--color-accent); color: #fff; }

.contact-form-panel {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}
.contact-form-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 28px;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.btn-full { width: 100%; justify-content: center; border-radius: 10px; }

/* ===== FAQ styled list ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item:first-child { border-top: 1px solid var(--color-border); }
.faq-question {
  padding: 20px 0;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  color: var(--color-primary);
  transition: color 0.2s;
  gap: 12px;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-icon { flex-shrink: 0; color: var(--color-accent); display: flex; transition: transform 0.25s; }
.faq-item[open] .faq-icon { transform: rotate(180deg); }
.faq-item[open] .faq-question { color: var(--color-accent); }

/* ===== Contact Responsive ===== */
@media (max-width: 900px) {
  .contact-layout { grid-template-columns: 1fr; }
  .contact-info-panel { position: static; }
}
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .contact-form-panel { padding: 28px 20px; }
  .contact-info-panel { padding: 28px 20px; }
  .section { padding: 56px 0; }
  .section-alt { padding: 56px 0; }
}