/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: white;
  color: #111827;
  line-height: 1.5;
  min-height: 100vh;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(6, 182, 212, 0.2);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo img {
  height: 90px;
  transition: transform 0.3s ease;
}

.logo:hover img {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.nav-links a {
  padding: 0.5rem 1rem;
  color: #4b5563;
  text-decoration: none;
  border-radius: 0.5rem;
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.nav-links a:hover {
  color: #22d3ee;
  background: rgba(6, 182, 212, 0.1);
}

.nav-links a.active {
  color: #22d3ee;
  background: rgba(6, 182, 212, 0.1);
}

/* Mobile Menu */
.mobile-menu-button {
  display: none;
  margin-left: auto;
  padding: 0.5rem;
  border-radius: 0.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background 0.3s ease;
}
.mobile-menu-button:hover { background: #f3f4f6; }
.mobile-menu-button svg { width: 24px; height: 24px; color: #111827; }
#navbar .mobile-menu {
  display: none !important;
  position: absolute;
  top: 80px;
  left: 0;
  right: 0;
  background: white;
  border-top: 1px solid rgba(6, 182, 212, 0.2);
  padding: 1rem;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
  z-index: 999;
}
#navbar .mobile-menu.open { display: block !important; }
#navbar .mobile-menu-content { display: flex; flex-direction: column; gap: 0.25rem; }
#navbar .mobile-menu-content > a,
#navbar .mobile-nav-item {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #4b5563;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box;
}
.mobile-nav-item:hover { background: rgba(243, 244, 246, 0.8); }
.mobile-nav-item.active { background: rgba(6, 182, 212, 0.1); color: #06b6d4; }
.mobile-nav-sub-item { padding-left: 2rem; font-size: 0.8125rem; color: #6b7280; }
.btn-primary-mobile { margin-top: 0.5rem; background: #06b6d4; color: white !important; text-align: center; font-weight: 600; }
.btn-primary-mobile:hover { background: #0891b2; }

@media (max-width: 1023px) {
  .nav-links { display: none !important; }
  .mobile-menu-button { display: block !important; }
}

.btn-primary {
  padding: 0.625rem 1.5rem;
  margin-left: 1rem;
  background: linear-gradient(to right, #06b6d4, #3b82f6);
  color: white;
  border-radius: 0.5rem;
  font-weight: bold;
  box-shadow: 0 4px 6px -1px rgba(6, 182, 212, 0.3);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: linear-gradient(to right, #22d3ee, #60a5fa);
  transform: translateY(-1px);
}

/* === Navigation Dropdown === */
.nav-dropdown {
  position: relative;
}

.dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  color: #4b5563;
  text-decoration: none;
  border-radius: 0.5rem;
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.dropdown-trigger:hover {
  color: #22d3ee;
  background: rgba(6, 182, 212, 0.1);
}

.dropdown-trigger.active {
  color: #22d3ee;
  background: rgba(6, 182, 212, 0.1);
}

.icon-chevron {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.nav-dropdown.open .icon-chevron {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  padding-top: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 50;
}

.nav-dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu {
  width: 14rem;
  background: white;
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: 0.5rem;
  box-shadow: 0 10px 15px -3px rgba(6, 182, 212, 0.1);
  padding: 0.5rem;
}

.dropdown-menu a {
  display: block;
  padding: 0.5rem 1rem;
  color: #4b5563;
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: 0.25rem;
  transition: all 0.3s ease;
}

.dropdown-menu a:hover {
  color: #22d3ee;
  background: rgba(6, 182, 212, 0.1);
}

/* Main Content */
main {
  padding-top: 80px;
}

.page-container {
  min-height: 100vh;
  background: linear-gradient(to bottom, #f9fafb, #f3f4f6, #f9fafb);
}

/* Title Section */
.title-section {
  padding: 8rem 1.5rem 4rem;
}

.title-content {
  max-width: 56rem;
  margin: 0 auto;
  text-align: center;
}

.page-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, #111827, #06b6d4);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0;
  transform: translateY(20px);
}

.page-title.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

.page-subtitle {
  font-size: 1.25rem;
  color: #4b5563;
  opacity: 0;
  transform: translateY(20px);
}

.page-subtitle.fade-in {
  animation: fadeIn 0.6s ease 0.1s forwards;
}

@media (min-width: 768px) {
  .page-title {
    font-size: 3.75rem;
  }
}

/* Contact Section */
.contact-section {
  padding: 3.75rem 1.5rem;
}

.contact-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
}

/* Form Column */
.form-column {
  opacity: 0;
  transform: translateX(-20px);
}

.form-column.fade-in-left {
  animation: fadeInLeft 0.6s ease forwards;
}

.form-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 2rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: #4b5563;
  margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  background: rgba(249, 250, 251, 0.5);
  border: 1px solid #e5e7eb;
  color: #111827;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  ring: 2px;
  ring-color: #06b6d4;
  border-color: #06b6d4;
}

.form-textarea {
  resize: none;
}

.form-textarea::placeholder {
  color: #9ca3af;
}

.submit-button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(to right, #06b6d4, #3b82f6);
  color: white;
  padding: 1rem;
  border-radius: 0.5rem;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 10px 15px -3px rgba(6, 182, 212, 0.3);
}

.submit-button:hover {
  background: linear-gradient(to right, #22d3ee, #60a5fa);
}

.submit-button svg {
  width: 20px;
  height: 20px;
}

.form-note {
  font-size: 0.875rem;
  color: #6b7280;
  text-align: center;
}

@media (min-width: 768px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* Info Column */
.info-column {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  opacity: 0;
  transform: translateX(20px);
}

.info-column.fade-in-right {
  animation: fadeInRight 0.6s ease forwards;
}

.info-section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 1.5rem;
}

.info-items {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.info-icon {
  width: 24px;
  height: 24px;
  color: #22d3ee;
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.info-content {
  flex: 1;
}

.info-label {
  font-weight: 500;
  color: #111827;
  margin-bottom: 0.25rem;
}

.info-text {
  color: #6b7280;
}

/* Quick Response Box */
.response-box {
  background: rgba(243, 244, 246, 0.8);
  padding: 2rem;
  border-radius: 1rem;
  border: 1px solid rgba(6, 182, 212, 0.2);
}

.response-icon {
  width: 48px;
  height: 48px;
  color: #22d3ee;
  margin-bottom: 1rem;
}

.response-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 0.75rem;
}

.response-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.response-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  color: #4b5563;
}

.response-list li .bullet {
  color: #22d3ee;
}

@media (min-width: 1024px) {
  .contact-container {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================
   FOOTER - 与首页统一
   ============================================ */

footer {
  background: #f3f4f6;
  color: #6b7280;
  border-top: 1px solid rgba(6, 182, 212, 0.1);
  padding: 4rem 1.5rem 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr;
    gap: 10rem;
    margin-bottom: 3rem;
}

.footer-title {
  font-weight: bold;
  color: #111827;
  margin-bottom: 1rem;
}

.footer-links a {
  display: block;
  color: #6b7280;
  text-decoration: none;
  margin-bottom: 0.75rem;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: #22d3ee;
}

.footer-bottom {
  border-top: 1px solid #d1d5db;
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.qr-codes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 24rem;
  margin-top: 1.5rem;
}

.qr-code {
  text-align: center;
}

.qr-code-img {
  width: 5rem;
  height: 5rem;
  background: #d1d5db;
  border-radius: 0.5rem;
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.qr-code-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-code-label {
  font-size: 0.75rem;
  color: #6b7280;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}