/* ----- 全域重置 ----- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', 'Segoe UI', Roboto, system-ui, sans-serif;
  background-color: #f5f9f5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-top: 80px;
}

/* ============================================
   固定頂部導航 — 白色背景
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: #ffffff;
  background-image: url('../images/top_bg.jpg');
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
  padding: 0 2rem;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.brand-logo {
  height: 48px;
  width: auto;
  display: block;
  max-height: 48px;
  object-fit: contain;
}

.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name .zh {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: 1px;
}

.brand-name .en {
  font-size: 0.7rem;
  font-weight: 400;
  color: #666666;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  opacity: 0.8;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  flex: 1 1 auto;
  justify-content: flex-end;
}

.nav-links a {
  color: #333333;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 0.4rem 0.2rem;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.nav-links a:hover,
.nav-links a.active {
  border-bottom-color: #2B475C;
  color: #2B475C;
}

.whatsapp-desktop {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: #25D366;
  color: #fff;
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.3px;
  padding: 0.65rem 1.8rem 0.65rem 1.5rem !important;
  border-radius: 60px;
  box-shadow: 0 2px 12px rgba(37, 211, 102, 0.3);
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  text-decoration: none;
  white-space: nowrap;
  border: none;
}

.whatsapp-desktop:hover {
  background: #1ebe5d;
  transform: scale(1.03);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
}

.whatsapp-desktop svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
  flex-shrink: 0;
}

/* ----- 汉堡菜单 (白色背景适配) ----- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px 4px;
  margin-left: 0.5rem;
  width: 34px;
  height: 34px;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hamburger span {
  display: block;
  width: 28px;
  height: 3px;
  background-color: #333333;
  border-radius: 4px;
  transition: all 0.3s ease;
  transform-origin: center;
  position: absolute;
}

.hamburger span:nth-child(1) { top: 8px; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 8px; }

.hamburger.open span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.open span:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* ----- 行动版导航 (白色背景适配) ----- */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: #ffffff;
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  padding: 1.5rem 2rem 2rem;
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
  border-top: 1px solid #e8ece8;
  gap: 1rem;
  z-index: 999;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  color: #333333;
  text-decoration: none;
  font-weight: 500;
  font-size: 1.1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid #e8ece8;
  transition: 0.15s;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: #2B475C;
  padding-left: 0.3rem;
  border-bottom-color: #2B475C;
}

.mobile-whatsapp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: #25D366;
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.7rem 2rem;
  border-radius: 60px;
  margin-top: 0.5rem;
  text-decoration: none;
  border: none;
  width: fit-content;
  box-shadow: 0 2px 12px rgba(37, 211, 102, 0.3);
}

.mobile-whatsapp svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.no-scroll { overflow: hidden; }

/* ============================================
   页面主内容容器
   ============================================ */
.main-content {
  flex: 1;
}

/* ============================================
   Banner 区域 — 美化版 (使用背景图片)
   ============================================ */
.banner-section {
  width: 100%;
  min-height: 400px;
  background-image: url('../images/banner-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 2rem;
}

/* 半透明遮罩层，让文字更清晰 */
.banner-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.25);
  pointer-events: none;
  z-index: 1;
}

.banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
}

.banner-title {
  font-size: 3.2rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 4px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  margin-bottom: 0.5rem;
}

.banner-title .highlight {
  color: #BADA55;
}

.banner-subtitle {
  font-size: 1.4rem;
  font-weight: 300;
  color: #d4e8d4;
  letter-spacing: 6px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

.banner-subtitle .accent {
  color: #BADA55;
  font-weight: 500;
}

.banner-decoration {
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.banner-decoration .line {
  width: 60px;
  height: 2px;
  background: rgba(186, 218, 85, 0.5);
}

.banner-decoration .dot {
  width: 8px;
  height: 8px;
  background: #BADA55;
  border-radius: 50%;
}

/* ============================================
   表单模块 — 背景 #68AB69
   ============================================ */
.form-section {
  padding: 3.5rem 1.5rem;
  background: #68AB69;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.form-container {
  max-width: 820px;
  width: 100%;
}

.form-title {
  text-align: center;
  margin-bottom: 2rem;
}

.form-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 1px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.form-title h2 span {
  color: #ffffff;
  opacity: 0.5;
  margin: 0 0.5rem;
}

.form-title p {
  color: #e8f5e8;
  font-size: 1rem;
  margin-top: 0.3rem;
  font-weight: 400;
  letter-spacing: 0.5px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem 1.8rem;
}

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

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  color: #ffffff;
  font-weight: 500;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
  letter-spacing: 0.3px;
}

.form-group label .required {
  color: #ffffff;
  opacity: 0.8;
  margin-left: 2px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  border: 2px solid #ffffff;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.9);
  color: #1a3a28;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: #2B475C;
  background: #ffffff;
  box-shadow: 0 0 0 4px rgba(43, 71, 92, 0.15);
}

.form-group input::placeholder {
  color: #8a9a8a;
  font-weight: 400;
}

.radio-group {
  display: flex;
  gap: 2rem;
  padding-top: 0.3rem;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #ffffff;
  font-weight: 500;
  font-size: 0.95rem;
  cursor: default;
}

.radio-option input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: #2B475C;
  cursor: default;
  flex-shrink: 0;
}

.submit-btn {
  width: 100%;
  padding: 0.9rem;
  background: #2B475C;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 1px;
  border: none;
  border-radius: 60px;
  cursor: default;
  transition: background 0.25s, transform 0.15s, box-shadow 0.25s;
  box-shadow: 0 4px 16px rgba(43, 71, 92, 0.3);
  margin-top: 0.3rem;
  font-family: 'Inter', sans-serif;
}

.submit-btn:hover {
  background: #1a3345;
  transform: scale(1.01);
  box-shadow: 0 6px 24px rgba(43, 71, 92, 0.4);
}

/* ============================================
   公司简介模块 (使用背景图片) — 内容靠左
   ============================================ */
.about-section {
  width: 100%;
  min-height: 520px;
  background-image: url('../images/about-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  padding: 3rem 2rem;
  position: relative;
}

/* 半透明遮罩 */
.about-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.2);
  pointer-events: none;
}

/* 内容容器 — 1200px 内靠左 */
.about-container {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: flex-start;
}

.about-card {
  max-width: 660px;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(2px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 24px;
  padding: 2.5rem 2.8rem;
  box-shadow: 0 12px 48px rgba(0, 20, 10, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 20, 10, 0.15);
}

.about-card .company-name {
  font-size: 1.6rem;
  font-weight: 700;
  color: #1a3a28;
  letter-spacing: 0.5px;
  line-height: 1.3;
}

.about-card .company-name .en {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: #4a6a5a;
  letter-spacing: 1px;
  margin-top: 0.1rem;
}

.about-card .divider {
  width: 60px;
  height: 4px;
  background: #2B475C;
  border-radius: 4px;
  margin: 0.8rem 0 1.2rem 0;
}

.about-card p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: #2a3a2a;
  margin-bottom: 1rem;
  font-weight: 400;
  letter-spacing: 0.2px;
}

.about-card p:last-child {
  margin-bottom: 0;
}

/* ============================================
   四大优势模块 (使用背景图片)
   ============================================ */
.advantages-section {
  width: 100%;
  min-height: 520px;
  background-image: url('../images/advantages-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 4rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

/* 半透明遮罩 */
.advantages-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.25);
  pointer-events: none;
}

.advantages-title {
  text-align: center;
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 1;
}

.advantages-title h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 2px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.advantages-title .sub {
  color: #d4e8d4;
  font-size: 1rem;
  margin-top: 0.3rem;
  letter-spacing: 1px;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.2);
}

.advantages-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem;
  max-width: 1100px;
  width: 100%;
  position: relative;
  z-index: 1;
}

.advantage-card {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 20px;
  padding: 2rem 1.8rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
  border-color: #BADA55;
  background: rgba(255, 255, 255, 0.98);
}

.advantage-card .icon {
  font-size: 2.2rem;
  margin-bottom: 0.6rem;
  display: block;
}

.advantage-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #1a3a28;
  margin-bottom: 0.6rem;
  letter-spacing: 0.5px;
}

.advantage-card p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: #3a4a3a;
  font-weight: 400;
  letter-spacing: 0.2px;
}

/* ============================================
   CTA 咨询报价模块
   ============================================ */
.cta-section {
  width: 100%;
  min-height: 220px;
  background: linear-gradient(135deg, #1a3a28 0%, #2a5a3a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 2rem;
}

.cta-container {
  max-width: 1100px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.cta-text {
  flex: 1 1 auto;
}

.cta-text h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #1a3a28;
  letter-spacing: 1px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.cta-text p {
  font-size: 1.1rem;
  color: #1a3a28;
  margin-top: 0.3rem;
  letter-spacing: 0.5px;
}

.cta-btn-large {
  flex-shrink: 0;
  display: inline-block;
  background: #2B475C;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 1px;
  padding: 0.9rem 3rem;
  border-radius: 60px;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(43, 71, 92, 0.35);
  transition: background 0.25s, transform 0.2s, box-shadow 0.25s;
  border: none;
  white-space: nowrap;
  font-family: 'Inter', sans-serif;
}

.cta-btn-large:hover {
  background: #1a3345;
  transform: scale(1.03);
  box-shadow: 0 6px 30px rgba(43, 71, 92, 0.45);
}

/* ============================================
   页脚 — 背景 #BADA55
   ============================================ */
.footer-section {
  width: 100%;
  background: #BADA55;
  padding: 3rem 2rem 1rem;
  color: #1a3a28;
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-logo-row {
  text-align: left;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(26, 58, 40, 0.15);
  margin-bottom: 2rem;
}

.footer-logo-row .footer-logo-text {
  font-size: 1.8rem;
  font-weight: 700;
  color: #1a3a28;
  letter-spacing: 2px;
}

.footer-logo-row .footer-logo-text .en {
  display: block;
  font-size: 0.85rem;
  font-weight: 400;
  color: #2a5a3a;
  letter-spacing: 1.5px;
  margin-top: 0.2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.footer-contact h3,
.footer-nav h3,
.footer-form h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #1a3a28;
  letter-spacing: 1px;
  margin-bottom: 0.8rem;
}

.footer-contact p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: #2a4a3a;
  letter-spacing: 0.3px;
}

.footer-contact p strong {
  color: #1a3a28;
  font-weight: 600;
}

.footer-contact .contact-item {
  margin-bottom: 0.3rem;
}

.footer-contact .address {
  margin-top: 0.5rem;
}

.footer-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.8rem;
}

.footer-nav-links a {
  color: #2a4a3a;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  transition: color 0.2s;
  letter-spacing: 0.3px;
}

.footer-nav-links a:hover {
  color: #1a3a28;
  text-decoration: underline;
}

.footer-form .form-intro {
  font-size: 0.85rem;
  color: #2a4a3a;
  line-height: 1.6;
  margin-bottom: 1rem;
  letter-spacing: 0.3px;
}

.footer-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem 1rem;
}

.footer-form .form-row .full-width {
  grid-column: 1 / -1;
}

.footer-form input,
.footer-form textarea {
  width: 100%;
  padding: 0.65rem 1rem;
  font-size: 0.9rem;
  font-family: 'Inter', sans-serif;
  border: 1px solid rgba(26, 58, 40, 0.2);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.7);
  color: #1a3a28;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
  outline: none;
}

.footer-form input::placeholder,
.footer-form textarea::placeholder {
  color: #5a7a6a;
}

.footer-form input:focus,
.footer-form textarea:focus {
  border-color: #2B475C;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 0 3px rgba(43, 71, 92, 0.1);
}

.footer-form textarea {
  resize: vertical;
  min-height: 80px;
}

.footer-form .submit-footer {
  background: #2B475C;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 1px;
  padding: 0.7rem;
  border: none;
  border-radius: 60px;
  cursor: default;
  transition: background 0.25s, transform 0.15s;
  font-family: 'Inter', sans-serif;
  width: 100%;
}

.footer-form .submit-footer:hover {
  background: #1a3345;
  transform: scale(1.01);
}

.footer-copyright {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(26, 58, 40, 0.15);
  font-size: 0.8rem;
  color: #2a5a3a;
  letter-spacing: 0.5px;
}

/* ============================================
   响应式设计
   ============================================ */
@media screen and (max-width: 1024px) {
  body { padding-top: 76px; }
  .navbar { padding: 0 1.5rem; height: 76px; }
  .brand-logo { max-height: 42px; }
  .brand-name .zh { font-size: 1.1rem; }
  .nav-links { gap: 1.5rem; }
  .nav-links a { font-size: 0.9rem; }
  .whatsapp-desktop { font-size: 0.72rem; padding: 0.55rem 1.5rem 0.55rem 1.2rem; }
  .mobile-nav { top: 76px; }
  .banner-section { min-height: 320px; padding: 2.5rem 1.5rem; }
  .banner-title { font-size: 2.8rem; }
  .banner-subtitle { font-size: 1.2rem; letter-spacing: 4px; }
  .form-section { padding: 2.8rem 1.5rem; }
  .about-section { min-height: 440px; padding: 2.5rem 1.5rem; }
  .about-card { max-width: 560px; padding: 2rem 2.2rem; }
  .advantages-section { padding: 3rem 1.5rem; min-height: 440px; }
  .advantages-grid { gap: 1.5rem; }
  .cta-section { min-height: 190px; padding: 2rem 1.5rem; }
  .cta-text h2 { font-size: 1.8rem; }
  .cta-btn-large { font-size: 1rem; padding: 0.8rem 2.2rem; }
  .footer-section { padding: 2.5rem 1.5rem 1rem; }
  .footer-content { gap: 2rem; }
}

@media screen and (max-width: 820px) {
  body { padding-top: 72px; }
  .navbar { height: 72px; padding: 0 1.2rem; }
  .brand-logo { max-height: 38px; }
  .brand-name .zh { font-size: 1rem; }
  .brand-name .en { font-size: 0.6rem; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { top: 72px; }
  .banner-section { min-height: 280px; padding: 2rem 1.2rem; }
  .banner-title { font-size: 2.2rem; letter-spacing: 2px; }
  .banner-subtitle { font-size: 1rem; letter-spacing: 3px; }
  .banner-decoration .line { width: 40px; }
  .form-section { padding: 2.2rem 1.2rem; }
  .form-grid { gap: 1rem; }
  .about-section { min-height: 380px; padding: 2rem 1.2rem; }
  .about-card { max-width: 100%; padding: 1.8rem 1.8rem; }
  .about-container { justify-content: flex-start; }
  .advantages-section { padding: 2.5rem 1.2rem; min-height: 380px; }
  .advantages-grid { gap: 1.2rem; }
  .cta-section { min-height: 170px; padding: 1.8rem 1.2rem; }
  .cta-text h2 { font-size: 1.5rem; }
  .cta-text p { font-size: 0.95rem; }
  .cta-btn-large { font-size: 0.95rem; padding: 0.7rem 2rem; }
  .footer-section { padding: 2rem 1.2rem 1rem; }
  .footer-content { grid-template-columns: 1fr; gap: 2rem; }
  .footer-logo-row .footer-logo-text { font-size: 1.5rem; }
}

@media screen and (max-width: 600px) {
  body { padding-top: 68px; }
  .navbar { height: 68px; padding: 0 1rem; }
  .brand-logo { max-height: 40px; }
  .brand-name .zh { font-size: 0.9rem; }
  .brand-name .en { font-size: 0.5rem; }
  .hamburger { width: 30px; height: 30px; }
  .hamburger span { width: 24px; height: 2.5px; }
  .hamburger span:nth-child(1) { top: 6px; }
  .hamburger span:nth-child(3) { bottom: 6px; }
  .mobile-nav { top: 68px; padding: 1rem 1.2rem 1.5rem; }
  .mobile-nav a { font-size: 1rem; }
	.mobile-whatsapp{    padding: 0.65rem 1.8rem 0.65rem 1.5rem !important;}
  .banner-section { min-height: 240px; padding: 1.8rem 1rem; }
  .banner-title { font-size: 1.8rem; letter-spacing: 1px; }
  .banner-subtitle { font-size: 0.85rem; letter-spacing: 2px; }
  .banner-decoration .line { width: 30px; }
  .banner-decoration .dot { width: 6px; height: 6px; }

  .form-section { padding: 1.8rem 1rem; }
  .form-container { max-width: 100%; }
  .form-grid { grid-template-columns: 1fr; gap: 0.9rem; }
  .form-group.full-width { grid-column: 1; }
  .form-title h2 { font-size: 1.5rem; }
  .form-title p { font-size: 0.85rem; }
  .form-group input { padding: 0.65rem 0.9rem; font-size: 0.9rem; }
  .radio-group { gap: 1.2rem; }
  .submit-btn { font-size: 0.95rem; padding: 0.75rem; }

  .about-section { min-height: 300px; padding: 1.5rem 1rem; }
  .about-card { padding: 1.5rem 1.2rem; }
  .about-card .company-name { font-size: 1.2rem; }
  .about-card .company-name .en { font-size: 0.7rem; }
  .about-card p { font-size: 0.85rem; line-height: 1.7; }

  .advantages-section { padding: 2rem 1rem; min-height: 300px; }
  .advantages-title h2 { font-size: 1.6rem; }
  .advantages-grid { grid-template-columns: 1fr; gap: 1rem; max-width: 480px; }
  .advantage-card { padding: 1.5rem 1.2rem; }
  .advantage-card h3 { font-size: 1.05rem; }
  .advantage-card p { font-size: 0.85rem; line-height: 1.6; }

  .cta-section { min-height: 150px; padding: 1.5rem 1rem; }
  .cta-container { flex-direction: column; text-align: center; gap: 1rem; }
  .cta-text h2 { font-size: 1.4rem; }
  .cta-text p { font-size: 0.9rem; }
  .cta-btn-large { font-size: 0.9rem; padding: 0.65rem 1.8rem; width: 100%; text-align: center; }

  .footer-section { padding: 1.8rem 1rem 0.8rem; }
  .footer-logo-row .footer-logo-text { font-size: 1.3rem; }
  .footer-logo-row .footer-logo-text .en { font-size: 0.7rem; }
  .footer-content { gap: 1.5rem; }
  .footer-form .form-row { grid-template-columns: 1fr; gap: 0.6rem; }
  .footer-form .form-row .full-width { grid-column: 1; }
  .footer-nav-links { gap: 0.3rem 1rem; }
  .footer-nav-links a { font-size: 0.85rem; }
  .footer-contact p { font-size: 0.85rem; }
  .footer-form .form-intro { font-size: 0.8rem; }
}

@media screen and (max-width: 400px) {
  .brand-name .zh { font-size: 0.8rem; }
  .brand-name .en { font-size: 0.45rem; letter-spacing: 0.3px; }
  .brand-logo { max-height: 40px; }
  .hamburger span { width: 22px; height: 2px; }
  .hamburger span:nth-child(1) { top: 5px; }
  .hamburger span:nth-child(3) { bottom: 5px; }
  .mobile-nav a { font-size: 0.9rem; }
  .banner-title { font-size: 1.5rem; }
  .banner-subtitle { font-size: 0.75rem; letter-spacing: 1px; }
  .form-title h2 { font-size: 1.3rem; }
  .radio-group { flex-direction: column; gap: 0.4rem; }
  .about-card { padding: 1.2rem 1rem; }
  .about-card .company-name { font-size: 1rem; }
  .about-card p { font-size: 0.8rem; }
  .advantages-title h2 { font-size: 1.3rem; }
  .advantage-card { padding: 1.2rem 1rem; }
  .cta-text h2 { font-size: 1.2rem; }
  .cta-btn-large { font-size: 0.85rem; padding: 0.6rem 1.5rem; }
  .footer-logo-row .footer-logo-text { font-size: 1.1rem; }
}