/* ============================================
   悦行国际旅游 - 全站设计系统
   ============================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* --- CSS Variables --- */
:root {
  --color-primary: #1B7CBC;
  --color-primary-light: #2A8FD0;
  --color-primary-dark: #1563A0;
  --color-orange: #F5A623;
  --color-orange-light: #F7B840;
  --color-green: #36B37E;
  --color-green-light: #4EC38E;
  --color-neutral-bg: #E8F1F8;
  --color-neutral-text: #8898AA;
  --color-white: #FFFFFF;
  --color-dark: #1E2A3A;
  --color-dark-light: #2C3E50;
  --color-body-bg: #F7FAFB;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-title-size: 44px;
  --font-title-size-md: 32px;
  --font-title-size-sm: 24px;
  --font-subtitle-size: 22px;
  --font-body-size: 16px;
  --font-small-size: 14px;
  --line-height-body: 1.65;
  --letter-spacing-title: -0.3px;

  --radius-btn: 8px;
  --radius-card: 12px;
  --radius-input: 8px;

  --shadow-card: 0 4px 20px rgba(27, 124, 188, 0.08);
  --shadow-card-hover: 0 8px 32px rgba(27, 124, 188, 0.16);
  --shadow-nav: 0 2px 16px rgba(0, 0, 0, 0.06);
  --shadow-float: 0 6px 24px rgba(0, 0, 0, 0.12);

  --transition-fast: 240ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 340ms ease;

  --container-max: 1280px;
  --section-py: 80px;
  --section-py-md: 64px;
  --section-py-sm: 48px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-body-size);
  line-height: var(--line-height-body);
  color: var(--color-dark);
  background-color: var(--color-body-bg);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
.title-xl {
  font-size: var(--font-title-size);
  font-weight: 600;
  letter-spacing: var(--letter-spacing-title);
  line-height: 1.2;
  color: var(--color-dark);
}

.title-lg {
  font-size: var(--font-title-size-md);
  font-weight: 600;
  letter-spacing: var(--letter-spacing-title);
  line-height: 1.25;
  color: var(--color-dark);
}

.title-md {
  font-size: var(--font-title-size-sm);
  font-weight: 600;
  letter-spacing: var(--letter-spacing-title);
  line-height: 1.3;
  color: var(--color-dark);
}

.title-sm {
  font-size: var(--font-subtitle-size);
  font-weight: 600;
  letter-spacing: var(--letter-spacing-title);
  line-height: 1.35;
  color: var(--color-dark);
}

.text-body {
  font-size: var(--font-body-size);
  font-weight: 400;
  line-height: var(--line-height-body);
  color: var(--color-dark-light);
}

.text-small {
  font-size: var(--font-small-size);
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-neutral-text);
}

.text-primary {
  color: var(--color-primary);
}

.text-orange {
  color: var(--color-orange);
}

.text-green {
  color: var(--color-green);
}

.text-white {
  color: var(--color-white);
}

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

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-small-size);
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

/* --- Container --- */
.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 16px;
  padding-right: 16px;
}

@media (min-width: 768px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

@media (min-width: 1200px) {
  .container {
    padding-left: 40px;
    padding-right: 40px;
  }
}

/* --- Section --- */
.section {
  padding-top: var(--section-py-sm);
  padding-bottom: var(--section-py-sm);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--section-py-md);
    padding-bottom: var(--section-py-md);
  }
}

@media (min-width: 1200px) {
  .section {
    padding-top: var(--section-py);
    padding-bottom: var(--section-py);
  }
}

.section-white {
  background-color: var(--color-white);
}

.section-light {
  background-color: var(--color-neutral-bg);
}

.section-body {
  background-color: var(--color-body-bg);
}

.section-dark {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .section-header {
    margin-bottom: 56px;
  }
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-white);
  box-shadow: var(--shadow-nav);
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.nav.nav-transparent {
  background: transparent;
  box-shadow: none;
}

.nav.nav-transparent .nav-logo {
  color: var(--color-white);
}

.nav.nav-transparent .nav-logo-icon {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}

.nav.nav-transparent .nav-link {
  color: rgba(255, 255, 255, 0.85);
}

.nav.nav-transparent .nav-link:hover,
.nav.nav-transparent .nav-link.active {
  color: var(--color-white);
}

.nav.nav-transparent .nav-link.active::after {
  background: var(--color-white);
}

.nav.nav-transparent .nav-toggle span {
  background: var(--color-white);
}

.nav.nav-scrolled {
  background: var(--color-white);
  box-shadow: var(--shadow-nav);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: -0.5px;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 18px;
}

.nav-links {
  display: none;
  gap: 32px;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-dark-light);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  cursor: pointer;
  padding: 8px;
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

.nav-toggle span {
  height: 2px;
  background: var(--color-dark);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Mobile Menu --- */
.nav-mobile {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 999;
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  transform: translateY(-20px);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.nav-mobile.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.nav-mobile-link {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-dark);
  padding: 16px 0;
  border-bottom: 1px solid #E5EBF0;
  transition: color var(--transition-fast);
}

.nav-mobile-link:hover,
.nav-mobile-link.active {
  color: var(--color-primary);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-family);
  font-weight: 500;
  font-size: 15px;
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast),
    transform var(--transition-fast), box-shadow var(--transition-fast);
  padding: 12px 28px;
  line-height: 1;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  box-shadow: 0 4px 16px rgba(27, 124, 188, 0.3);
}

.btn-orange {
  background: var(--color-orange);
  color: var(--color-white);
}

.btn-orange:hover {
  background: var(--color-orange-light);
  box-shadow: 0 4px 16px rgba(245, 166, 35, 0.3);
}

.btn-green {
  background: var(--color-green);
  color: var(--color-white);
}

.btn-green:hover {
  background: var(--color-green-light);
  box-shadow: 0 4px 16px rgba(54, 179, 126, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-outline-white {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255, 255, 255, 0.5);
}

.btn-outline-white:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: var(--color-neutral-bg);
}

@media (min-width: 768px) {
  .card-img {
    height: 220px;
  }
}

.card-body {
  padding: 20px 24px;
}

.card-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--color-neutral-bg);
  color: var(--color-primary);
  margin-bottom: 12px;
}

.card-tag-orange {
  background: rgba(245, 166, 35, 0.12);
  color: var(--color-orange);
}

.card-tag-green {
  background: rgba(54, 179, 126, 0.12);
  color: var(--color-green);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
  letter-spacing: var(--letter-spacing-title);
}

.card-desc {
  font-size: 14px;
  color: var(--color-neutral-text);
  line-height: 1.6;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-top: 1px solid #E5EBF0;
}

.card-price {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-orange);
}

.card-price-unit {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-neutral-text);
}

.card-duration {
  font-size: 14px;
  color: var(--color-neutral-text);
}

/* --- Hero/Banner --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27, 124, 188, 0.2) 0%, rgba(30, 42, 58, 0.45) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

.hero-title {
  font-size: 40px;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: var(--letter-spacing-title);
  line-height: 1.15;
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 52px;
  }
}

@media (min-width: 1200px) {
  .hero-title {
    font-size: 60px;
  }
}

.hero-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 480px;
}

@media (min-width: 768px) {
  .hero-subtitle {
    font-size: 20px;
  }
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Page Banner (sub pages) --- */
.page-banner {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

@media (min-width: 768px) {
  .page-banner {
    min-height: 400px;
  }
}

.page-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.page-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27, 124, 188, 0.6) 0%, rgba(30, 42, 58, 0.5) 100%);
}

.page-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 600px;
  margin: auto;
}

.page-banner-title {
  font-size: 36px;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: var(--letter-spacing-title);
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .page-banner-title {
    font-size: 44px;
  }
}

.page-banner-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
}

/* --- Grid Layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
}

@media (min-width: 1200px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

@media (min-width: 768px) {
  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

@media (min-width: 1200px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
  }
}

/* --- Feature Row --- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

@media (min-width: 768px) {
  .feature-row {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
}

.feature-row.reversed {
  direction: rtl;
}

.feature-row.reversed > * {
  direction: ltr;
}

.feature-img-wrap {
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.feature-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background-color: var(--color-neutral-bg);
}

/* --- Stats --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (min-width: 768px) {
  .stats-row {
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
  }
}

.stat-item {
  text-align: center;
  padding: 24px;
}

.stat-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

@media (min-width: 768px) {
  .stat-number {
    font-size: 44px;
  }
}

.stat-label {
  font-size: 14px;
  color: var(--color-neutral-text);
  font-weight: 500;
}

/* --- Icon Feature --- */
.icon-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (min-width: 768px) {
  .icon-features {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
}

@media (min-width: 1200px) {
  .icon-features {
    grid-template-columns: repeat(4, 1fr);
    gap: 36px;
  }
}

.icon-feature {
  text-align: center;
  padding: 32px 20px;
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.icon-feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.icon-feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--color-neutral-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
  color: var(--color-primary);
}

.icon-feature-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.icon-feature-desc {
  font-size: 14px;
  color: var(--color-neutral-text);
  line-height: 1.6;
}

/* --- Tabs/Filter --- */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.filter-btn {
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  border: 1.5px solid #E5EBF0;
  border-radius: 24px;
  background: var(--color-white);
  color: var(--color-neutral-text);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* --- Process/Steps --- */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

@media (min-width: 768px) {
  .process-steps {
    flex-direction: row;
    gap: 0;
  }
}

.process-step {
  flex: 1;
  text-align: center;
  padding: 32px 16px;
  position: relative;
}

@media (min-width: 768px) {
  .process-step::after {
    content: '';
    position: absolute;
    top: 56px;
    right: -20px;
    width: 40px;
    height: 2px;
    background: var(--color-neutral-bg);
  }

  .process-step:last-child::after {
    display: none;
  }
}

.process-step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 20px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.process-step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.process-step-desc {
  font-size: 14px;
  color: var(--color-neutral-text);
  line-height: 1.6;
}

/* --- Article Card --- */
.article-card {
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.article-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background-color: var(--color-neutral-bg);
}

.article-card-body {
  padding: 20px 24px;
}

.article-card-date {
  font-size: 12px;
  color: var(--color-neutral-text);
  margin-bottom: 8px;
}

.article-card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 10px;
  line-height: 1.4;
}

.article-card-excerpt {
  font-size: 14px;
  color: var(--color-neutral-text);
  line-height: 1.6;
}

/* --- Form --- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-family: var(--font-family);
  border: 1.5px solid #E5EBF0;
  border-radius: var(--radius-input);
  background: var(--color-white);
  color: var(--color-dark);
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

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

/* --- Footer --- */
.footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding-top: 64px;
  padding-bottom: 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
  }
}

.footer-brand {
  margin-bottom: 20px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-brand-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  max-width: 280px;
}

.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer-link {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  padding: 6px 0;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  margin-top: 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* --- Floating Customer Service --- */
.float-service {
  position: fixed;
  right: 16px;
  bottom: 80px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

@media (min-width: 768px) {
  .float-service {
    right: 24px;
    bottom: 100px;
  }
}

.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-float);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
}

.float-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
}

.float-btn-phone {
  background: var(--color-primary);
  color: var(--color-white);
}

.float-btn-email {
  background: var(--color-green);
  color: var(--color-white);
}

.float-btn-wechat {
  background: var(--color-orange);
  color: var(--color-white);
}

.float-btn-top {
  background: var(--color-white);
  color: var(--color-neutral-text);
  border: 1px solid #E5EBF0;
}

.float-tooltip {
  position: absolute;
  right: 58px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-white);
  border-radius: 8px;
  padding: 12px 16px;
  box-shadow: var(--shadow-float);
  white-space: nowrap;
  font-size: 14px;
  color: var(--color-dark);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.float-btn:hover .float-tooltip {
  opacity: 1;
  pointer-events: all;
}

.float-wechat-qr {
  width: 120px;
  height: 120px;
  background: var(--color-neutral-bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-neutral-text);
  font-size: 12px;
  text-align: center;
  padding: 8px;
}

/* --- Scroll Animation --- */
.anim-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.anim-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.anim-in-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.anim-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.anim-in-right {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.anim-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.anim-delay-1 { transition-delay: 80ms; }
.anim-delay-2 { transition-delay: 160ms; }
.anim-delay-3 { transition-delay: 240ms; }
.anim-delay-4 { transition-delay: 320ms; }

/* --- Utility --- */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.gap-32 { gap: 32px; }

.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-20 { margin-bottom: 20px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }

/* --- Decorative Divider --- */
.deco-wave {
  width: 100%;
  height: 40px;
  background: var(--color-neutral-bg);
  position: relative;
}

.deco-wave::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 40'%3E%3Cpath fill='%23E8F1F8' d='M0,20 C360,40 720,0 1080,20 C1260,30 1380,25 1440,20 L1440,40 L0,40 Z'/%3E%3C/svg%3E") no-repeat center;
  background-size: cover;
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-neutral-text);
  margin-bottom: 32px;
}

.breadcrumb a {
  color: var(--color-primary);
}

.breadcrumb-sep {
  font-size: 12px;
}