/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
  color: #4A4A68; line-height: 1.7; font-size: 16px; background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1,h2,h3,h4,h5,h6 { color: #1A1A2E; line-height: 1.3; }

/* ===== Utility ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-title {
  text-align: center; font-size: 2rem; font-weight: 700; margin-bottom: 12px;
  position: relative;
}
.section-subtitle {
  text-align: center; font-size: 1.05rem; color: #6B7280; margin-bottom: 48px; max-width: 640px; margin-left: auto; margin-right: auto;
}
.section-title::after {
  content: ''; display: block; width: 48px; height: 3px; background: #D4A843;
  margin: 12px auto 0; border-radius: 2px;
}
section { padding: 80px 0; }

/* ===== Navigation ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0); backdrop-filter: blur(0px);
  transition: background 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
  height: 72px;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.92); backdrop-filter: blur(12px);
  box-shadow: 0 1px 12px rgba(0,0,0,0.06);
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between; height: 72px;
}
.logo { display: flex; align-items: baseline; gap: 4px; font-weight: 700; font-size: 1.25rem; color: #fff; transition: color 0.3s; }
.logo-r { font-size: 0.6em; vertical-align: super; color: #D4A843; margin-left: 1px; }
.navbar.scrolled .logo { color: #1A1A2E; }
.navbar.scrolled .logo-r { color: #0B6E4F; }
.logo-divider { margin: 0 8px; color: #D4A843; font-weight: 300; }
.logo-suffix { font-size: 0.82rem; color: rgba(255,255,255,0.9); font-weight: 500; transition: color 0.3s; }
.navbar.scrolled .logo-suffix { color: #0B6E4F; }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  font-size: 0.95rem; color: rgba(255,255,255,0.85); font-weight: 500; position: relative;
  transition: color 0.2s;
}
.navbar.scrolled .nav-links a { color: #4A4A68; }
.nav-links a:hover { color: #fff; }
.navbar.scrolled .nav-links a:hover { color: #0B6E4F; }
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: #D4A843; transform: scaleX(0); transition: transform 0.2s;
}
.navbar.scrolled .nav-links a::after { background: #0B6E4F; }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta {
  background: rgba(255,255,255,0.15); color: #fff !important; padding: 8px 20px; border-radius: 6px;
  font-size: 0.9rem; transition: background 0.2s, transform 0.15s; border: 1px solid rgba(255,255,255,0.3);
}
.navbar.scrolled .nav-cta {
  background: #0B6E4F; border-color: transparent;
}
.nav-cta:hover { background: rgba(255,255,255,0.25); transform: translateY(-1px); }
.navbar.scrolled .nav-cta:hover { background: #096045; transform: translateY(-1px); }
.nav-cta::after { display: none !important; }

/* Mobile menu */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; }
.hamburger span { display: block; width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: transform 0.3s, opacity 0.3s, background 0.3s; }
.navbar.scrolled .hamburger span { background: #1A1A2E; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    position: fixed; top: 72px; left: 0; right: 0; background: rgba(255,255,255,0.98);
    backdrop-filter: blur(12px); flex-direction: column; gap: 0; padding: 8px 0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08); transform: translateY(-120%);
    transition: transform 0.3s ease; opacity: 0; pointer-events: none;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-links a { padding: 14px 24px; width: 100%; }
  .nav-links a::after { display: none; }
  .nav-cta { margin: 8px 24px; text-align: center; width: auto; }
}

/* ===== Hero / Banner ===== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center;
  overflow: hidden; padding: 120px 24px 80px;
  background: linear-gradient(135deg, #0B6E4F 0%, #0a5c42 25%, #0d7a58 50%, #096045 75%, #0B6E4F 100%);
  background-size: 400% 400%;
  animation: heroGradient 12s ease infinite;
}
@keyframes heroGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(212,168,67,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(255,255,255,0.06) 0%, transparent 50%);
  pointer-events: none;
}
.hero::after {
  content: ''; position: absolute; inset: 0;
  background: 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='%23ffffff' fill-opacity='0.03'%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");
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 800px; }
.hero-badge {
  display: inline-block; padding: 6px 18px; border: 1px solid rgba(255,255,255,0.3);
  border-radius: 20px; font-size: 0.85rem; color: rgba(255,255,255,0.9);
  margin-bottom: 24px; backdrop-filter: blur(4px); background: rgba(255,255,255,0.08);
}
.hero h1 {
  font-size: 2.8rem; font-weight: 800; color: #fff; margin-bottom: 16px;
  letter-spacing: 0.02em; line-height: 1.25;
}
.hero h1 .gold { color: #D4A843; }
.hero p {
  font-size: 1.15rem; color: rgba(255,255,255,0.85); margin-bottom: 36px;
  max-width: 600px; margin-left: auto; margin-right: auto; line-height: 1.8;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  background: #D4A843; color: #fff; padding: 14px 32px; border-radius: 8px;
  font-size: 1rem; font-weight: 600; transition: transform 0.2s, box-shadow 0.2s;
  border: none; cursor: pointer;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,168,67,0.3); }
.btn-outline {
  background: transparent; color: #fff; padding: 14px 32px; border-radius: 8px;
  font-size: 1rem; font-weight: 600; border: 1.5px solid rgba(255,255,255,0.4);
  transition: background 0.2s, border-color 0.2s; cursor: pointer;
}
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.7); }
.hero-stats {
  display: flex; gap: 48px; justify-content: center; margin-top: 56px;
  padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stat-num { font-size: 2.2rem; font-weight: 800; color: #D4A843; }
.hero-stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-top: 4px; }

@media (max-width: 768px) {
  .hero { min-height: auto; padding: 120px 20px 60px; }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat-num { font-size: 1.6rem; }
}

/* ===== Services ===== */
.services { background: #F7F8FA; }
.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.service-card {
  background: #fff; border-radius: 12px; padding: 32px 28px;
  border: 1px solid #EAEDF2; transition: transform 0.2s, box-shadow 0.2s;
  position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, #0B6E4F, #D4A843); transform: scaleX(0);
  transition: transform 0.3s; transform-origin: left;
}
.service-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.06); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 48px; height: 48px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(11,110,79,0.08), rgba(11,110,79,0.15));
  margin-bottom: 18px; font-size: 1.4rem;
}
.service-card h3 { font-size: 1.15rem; margin-bottom: 10px; font-weight: 600; }
.service-card p { font-size: 0.92rem; color: #6B7280; line-height: 1.7; }

@media (max-width: 768px) {
  .services-grid { grid-template-columns: 1fr; }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== Advantages ===== */
.advantages-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.advantage-item {
  text-align: center; padding: 36px 20px; border-radius: 12px;
  background: #F7F8FA; transition: transform 0.2s;
}
.advantage-item:hover { transform: translateY(-3px); }
.advantage-num {
  font-size: 2.4rem; font-weight: 800; color: #0B6E4F; margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}
.advantage-unit { font-size: 1rem; font-weight: 600; color: #0B6E4F; }
.advantage-label { font-size: 0.92rem; color: #6B7280; margin-top: 8px; }

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

/* ===== Process ===== */
.process { background: #F7F8FA; }
.process-steps {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; position: relative;
}
.process-step {
  text-align: center; padding: 24px 12px; position: relative;
}
.step-num {
  width: 44px; height: 44px; border-radius: 50%; background: #0B6E4F; color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700;
  font-size: 1.1rem; margin: 0 auto 14px; position: relative; z-index: 1;
}
.process-step::after {
  content: ''; position: absolute; top: 46px; left: calc(50% + 28px); right: calc(-50% + 28px);
  height: 2px; background: #D4A843; opacity: 0.4;
}
.process-step:last-child::after { display: none; }
.process-step h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 6px; }
.process-step p { font-size: 0.82rem; color: #6B7280; }

@media (max-width: 768px) {
  .process-steps { grid-template-columns: 1fr; gap: 0; }
  .process-step::after { display: none; }
}

/* ===== Scenarios ===== */
.scenarios-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.scenario-card {
  padding: 28px; border-radius: 12px; border: 1px solid #EAEDF2;
  background: #fff; transition: border-color 0.2s, box-shadow 0.2s;
}
.scenario-card:hover { border-color: #0B6E4F; box-shadow: 0 4px 16px rgba(11,110,79,0.06); }
.scenario-tag {
  display: inline-block; padding: 4px 12px; border-radius: 4px; font-size: 0.78rem;
  background: rgba(11,110,79,0.08); color: #0B6E4F; font-weight: 600; margin-bottom: 12px;
}
.scenario-card h3 { font-size: 1.05rem; margin-bottom: 8px; font-weight: 600; }
.scenario-card p { font-size: 0.9rem; color: #6B7280; }

@media (max-width: 768px) {
  .scenarios-grid { grid-template-columns: 1fr; }
}

/* ===== FAQ ===== */
.faq { background: #F7F8FA; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff; border-radius: 10px; margin-bottom: 12px;
  border: 1px solid #EAEDF2; overflow: hidden; transition: box-shadow 0.2s;
}
.faq-item:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.04); }
.faq-question {
  width: 100%; padding: 20px 24px; display: flex; align-items: center; justify-content: space-between;
  background: none; border: none; cursor: pointer; font-size: 1rem; font-weight: 600;
  color: #1A1A2E; text-align: left; gap: 16px; font-family: inherit; line-height: 1.5;
}
.faq-question:hover { color: #0B6E4F; }
.faq-icon {
  width: 24px; height: 24px; flex-shrink: 0; position: relative;
  transition: transform 0.3s;
}
.faq-icon::before, .faq-icon::after {
  content: ''; position: absolute; background: #0B6E4F; border-radius: 1px;
  transition: transform 0.3s;
}
.faq-icon::before { width: 14px; height: 2px; top: 11px; left: 5px; }
.faq-icon::after { width: 2px; height: 14px; top: 5px; left: 11px; }
.faq-item.active .faq-icon::after { transform: rotate(90deg); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px; font-size: 0.94rem; color: #4A4A68; line-height: 1.8;
}

/* ===== About ===== */
.about-wrapper {
  display: grid; grid-template-columns: 320px 1fr; gap: 56px; align-items: center;
}
.about-photo {
  position: relative;
}
.about-photo img {
  width: 100%; border-radius: 12px; aspect-ratio: 3/4; object-fit: cover;
  box-shadow: 0 16px 48px rgba(0,0,0,0.1);
}
.about-photo-badge {
  position: absolute; bottom: -16px; right: -16px; background: #D4A843; color: #fff;
  padding: 12px 20px; border-radius: 10px; font-weight: 700; font-size: 0.95rem;
  box-shadow: 0 8px 24px rgba(212,168,67,0.3);
}
.about-content h2 { font-size: 1.8rem; margin-bottom: 8px; }
.about-content .about-role { color: #0B6E4F; font-weight: 600; margin-bottom: 20px; font-size: 1.05rem; }
.about-content p { margin-bottom: 16px; font-size: 0.98rem; }
.about-highlights {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 24px;
}
.about-highlight {
  display: flex; align-items: center; gap: 10px; font-size: 0.92rem; font-weight: 500;
  color: #1A1A2E;
}
.about-highlight-dot {
  width: 8px; height: 8px; border-radius: 50%; background: #0B6E4F; flex-shrink: 0;
}

@media (max-width: 768px) {
  .about-wrapper { grid-template-columns: 1fr; gap: 32px; }
  .about-photo { max-width: 260px; margin: 0 auto; }
  .about-highlights { grid-template-columns: 1fr; }
}

/* ===== Contact ===== */
.contact { background: #F7F8FA; }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-item {
  display: flex; align-items: flex-start; gap: 16px; padding: 20px; background: #fff;
  border-radius: 10px; border: 1px solid #EAEDF2;
}
.contact-icon {
  width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center;
  justify-content: center; background: rgba(11,110,79,0.08); flex-shrink: 0;
}
.contact-icon svg { width: 20px; height: 20px; color: #0B6E4F; }
.contact-item h4 { font-size: 0.88rem; color: #6B7280; font-weight: 500; margin-bottom: 4px; }
.contact-item p { font-size: 1.05rem; font-weight: 600; color: #1A1A2E; }
.contact-qr {
  text-align: center; padding: 32px; background: #fff; border-radius: 12px;
  border: 1px solid #EAEDF2;
}
.contact-qr img { width: 200px; height: 200px; margin: 0 auto 16px; border-radius: 8px; }
.contact-qr p { font-size: 0.92rem; color: #6B7280; }

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ===== Footer ===== */
.footer {
  background: #1A1A2E; color: rgba(255,255,255,0.7); padding: 48px 0 0;
}
.footer-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-wrap: wrap; gap: 24px;
}
.footer-brand { max-width: 360px; }
.footer-brand .logo { color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; }
.footer-links-title { font-size: 0.88rem; color: #D4A843; font-weight: 600; margin-bottom: 14px; }
.footer-links {
  display: flex; flex-wrap: wrap; gap: 8px 16px; max-width: 700px;
}
.footer-links a {
  font-size: 0.82rem; color: rgba(255,255,255,0.55); transition: color 0.2s;
  white-space: nowrap;
}
.footer-links a:hover { color: #D4A843; }
.footer-bottom {
  padding: 20px 0; text-align: center; font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.55); transition: color 0.2s; }
.footer-bottom a:hover { color: #D4A843; }
.footer-icp { margin-top: 4px; }
.footer-icp a { text-decoration: underline; }

@media (max-width: 768px) {
  .footer-top { flex-direction: column; }
  .footer-links { max-width: 100%; }
}

/* ===== Scroll Animation ===== */
.fade-up {
  opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ===== Schema Markup Helper ===== */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}