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

:root {
  --primary: #FF8C00;
  --primary-dark: #E67E00;
  --blue: #1A6FB5;
  --blue-dark: #155a94;
  --dark: #1a1a2e;
  --text: #333;
  --text-light: #666;
  --text-muted: #999;
  --bg: #f8f9fc;
  --white: #fff;
  --border: #e8eaed;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 8px;
  --header-h: 72px;
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section--gray { background: var(--bg); }

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title .label {
  display: block;
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 8px;
  font-weight: 600;
}

.section-title h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark);
}

.section-title p {
  margin-top: 12px;
  color: var(--text-light);
  font-size: 15px;
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

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

.btn--primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255,140,0,0.4);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

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

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

.btn--blue:hover {
  background: var(--blue-dark);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: 0 1px 0 var(--border);
  transition: box-shadow var(--transition);
}

.header.scrolled { box-shadow: var(--shadow); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.header__logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 2px;
  line-height: 1;
}

.footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer__logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.footer__logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 2px;
  line-height: 1;
}

.nav { display: flex; align-items: center; gap: 4px; }

.nav__item { position: relative; }

.nav__link {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: var(--text);
  border-radius: 4px;
  transition: all var(--transition);
}

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

.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
}

.nav__item:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text-light);
}

.nav__dropdown a:hover {
  background: var(--bg);
  color: var(--primary);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all var(--transition);
}

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  height: 560px;
  margin-top: var(--header-h);
  overflow: hidden;
}

.hero__slides { height: 100%; position: relative; }

.hero__slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  transition: opacity 0.8s ease;
  background-size: cover;
  background-position: center;
}

.hero__slide.active { opacity: 1; z-index: 1; }

.hero__slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,111,181,0.75) 0%, rgba(255,140,0,0.55) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  color: var(--white);
  max-width: 680px;
}

.hero__content h1 {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero__content p {
  font-size: 16px;
  line-height: 1.8;
  opacity: 0.92;
  margin-bottom: 32px;
}

.hero__dots {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.hero__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.hero__dot.active {
  background: var(--white);
  width: 28px;
  border-radius: 5px;
}

.hero__arrows button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  border: none;
  color: var(--white);
  font-size: 20px;
  cursor: pointer;
  transition: background var(--transition);
}

.hero__arrows button:hover { background: rgba(255,255,255,0.4); }
.hero__prev { left: 24px; }
.hero__next { right: 24px; }

/* ===== Intro ===== */
.intro { text-align: center; }

.intro__text {
  max-width: 860px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 2;
  color: var(--text-light);
}

.intro__highlight {
  color: var(--primary);
  font-weight: 700;
  font-size: 20px;
}

/* ===== Stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.stat-card {
  text-align: center;
  padding: 32px 16px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.stat-card:hover { transform: translateY(-4px); }

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

.stat-card__num span { font-size: 16px; }

.stat-card__label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-light);
}

/* ===== Business Cards ===== */
.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.business-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.business-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.business-card__img {
  height: 200px;
  overflow: hidden;
  background: var(--bg);
}

.business-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.business-card:hover .business-card__img img {
  transform: scale(1.05);
}

.business-card__body { padding: 28px; }

.business-card__body h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--dark);
}

.business-card__body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

.business-card__link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
}

.business-card__link:hover { color: var(--primary-dark); }

/* ===== Brands ===== */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.brand-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.brand-card:hover { transform: translateY(-4px); }

.brand-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.brand-card__info {
  padding: 24px;
  background: var(--white);
}

.brand-card__info h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.brand-card__info p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== Story ===== */
.story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.story__visual {
  height: 360px;
  border-radius: var(--radius);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.story__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,111,181,0.45) 0%, rgba(255,140,0,0.35) 100%);
}

.story__visual--photo::after {
  background: rgba(0,0,0,0.15);
}

.story__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
}

.story__visual-text {
  color: var(--white);
  text-align: center;
  padding: 24px;
  position: relative;
  z-index: 2;
}

.story__visual-text h3 {
  font-size: 24px;
  margin-bottom: 8px;
}

.story__visual-text p { opacity: 0.85; font-size: 14px; }

.story__content h3 {
  font-size: 26px;
  color: var(--dark);
  margin-bottom: 16px;
}

.story__content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 2;
  margin-bottom: 16px;
}

/* ===== Gallery ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.gallery-item {
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  position: relative;
}

.gallery-item__bg {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transition: transform var(--transition);
}

.gallery-item:hover .gallery-item__bg { transform: scale(1.05); }

.gallery-item__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  transition: background var(--transition);
}

.gallery-item:hover .gallery-item__overlay {
  background: rgba(0,0,0,0.4);
}

.gallery-item__overlay span {
  color: var(--white);
  font-size: 14px;
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery-item:hover .gallery-item__overlay span { opacity: 1; }

/* ===== Honors ===== */
.honors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.honor-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  border-top: 3px solid var(--primary);
  transition: transform var(--transition);
}

.honor-card:hover { transform: translateY(-4px); }

.honor-card__icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.honor-card h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--dark);
}

.honor-card p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info__item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-info__icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-info__text h4 {
  font-size: 15px;
  margin-bottom: 4px;
}

.contact-info__text p {
  font-size: 14px;
  color: var(--text-light);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  margin-bottom: 16px;
  transition: border-color var(--transition);
}

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

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

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}


.footer__brand p {
  font-size: 13px;
  line-height: 1.8;
}

.footer__col h4 {
  color: var(--white);
  font-size: 15px;
  margin-bottom: 16px;
}

.footer__col a {
  display: block;
  font-size: 13px;
  padding: 4px 0;
  color: rgba(255,255,255,0.6);
}

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

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}

.footer__bottom a { color: rgba(255,255,255,0.5); }
.footer__bottom a:hover { color: var(--primary); }

/* ===== Sub-page ===== */
.page-banner {
  margin-top: var(--header-h);
  height: 240px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--primary) 100%);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-align: center;
  position: relative;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,111,181,0.82) 0%, rgba(255,140,0,0.65) 100%);
}

.page-banner > * { position: relative; z-index: 1; }

.page-banner h1 { font-size: 36px; margin-bottom: 8px; }
.page-banner p { opacity: 0.85; font-size: 15px; }

.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--text-muted);
}

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

.content-block {
  max-width: 860px;
  margin: 0 auto;
}

.content-block h3 {
  font-size: 22px;
  color: var(--dark);
  margin: 32px 0 16px;
}

.content-block p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 2;
  margin-bottom: 16px;
}

.content-block ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.content-block li {
  font-size: 15px;
  color: var(--text-light);
  line-height: 2;
  list-style: disc;
}

/* ===== Back to top ===== */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  border: none;
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 999;
  box-shadow: 0 4px 12px rgba(255,140,0,0.4);
}

.back-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-top:hover { transform: translateY(-3px); }

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .honors-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
  .story { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .menu-toggle { display: flex; }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--shadow);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding-left: 16px;
  }

  .hero { height: 440px; }
  .hero__content h1 { font-size: 28px; }
  .section { padding: 56px 0; }
  .section-title h2 { font-size: 26px; }

  .stats,
  .business-grid,
  .brands-grid,
  .gallery-grid,
  .honors-grid,
  .contact-grid,
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .hero__arrows button { display: none; }
  .footer__bottom { flex-direction: column; gap: 8px; text-align: center; }
}