@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Source+Han+Sans+CN:wght@400;500;600;700&display=swap");

:root {
  color-scheme: light;
  --bg: #f6f2ec;
  --bg-alt: #f0ebe2;
  --ink: #1a1a1a;
  --muted: #5b5b5b;
  --accent: #2f6fb3;
  --accent-strong: #1f4c7a;
  --card: #ffffff;
  --stroke: rgba(26, 26, 26, 0.12);
  --glow: rgba(47, 111, 179, 0.18);
  --shadow: 0 25px 60px rgba(26, 26, 26, 0.12);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Arial', "Helvetica YaHei", 'sans-serif';
  background: linear-gradient(135deg, #f4f8ff 0%, #eef3f9 50%, #e8eff7 100%);
  color: var(--ink);
  line-height: 1.6;
}

body.lang-en [data-lang="zh"],
body.lang-zh [data-lang="en"] {
  display: none;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}



.hero {
  padding: 36px 8vw 0px;
  position: relative;
  z-index: 1;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--stroke);
  border-radius: 18px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: 20px;
}

.brand-logo {
  width: 150px;
  height: auto;
  display: block;
  object-fit: contain;
}

.brand-name {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.4px;
}

.brand-sub {
  font-size: 12px;
  color: var(--muted);
}

.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--ink);
  font-size: 14px;
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--ink);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 600;
  cursor: pointer;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--stroke);
  border-radius: 999px;
  padding: 4px;
}

.lang-toggle button {
  border: none;
  background: transparent;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}

.lang-toggle button.active {
  background: var(--accent);
  color: #fff;
}

.hero-banner {
  min-height: 360px;
  border-radius: 20px;
  border: 1px solid var(--stroke);
  background: url("assets/homebanner.png") center/cover no-repeat;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  margin-top: 32px;
}

.hero-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15, 38, 64, 0.65), rgba(15, 38, 64, 0.15));
}

.banner-content {
  position: relative;
  z-index: 1;
  padding: 48px;
  max-width: 1100px;
  color: #ffffff;
}

.banner-grid {
  display: flex;
  gap: 36px;
  align-items: stretch;
  justify-content: space-between;
}

.banner-left {
  flex: 1.2;
}

.banner-right {
  flex: 0.8;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
  align-items: flex-end;
}

.banner-right .hero-actions,
.banner-right .hero-metrics {
  width: 100%;
}

.banner-left h1 {
  line-height: 1.3;
  margin-bottom: 18px;
}

.banner-left .hero-desc {
  max-width: 520px;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.02em;
}

.banner-right .hero-actions {
  justify-content: flex-end;
}

.banner-content .eyebrow,
.banner-content .hero-desc,
.banner-content .hero-metrics span {
  color: rgba(255, 255, 255, 0.85);
}

.banner-content h1 span,
.banner-content .hero-metrics strong {
  color: #ffffff;
}

.banner-highlight {
  color: #8ad2ff;
  display: block;
  letter-spacing: 0.04em;
}

.banner-content .ghost {
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: #ffffff;
}

.banner-content .primary {
  box-shadow: 0 16px 30px rgba(15, 38, 64, 0.35);
}
.eyebrow {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--accent-strong);
  font-weight: 600;
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero h1 span {
  display: block;
  color: rgba(255, 255, 255, 0.85);
}

.hero h1 span[data-lang="en"]:first-child,
.hero h1 span[data-lang="zh"]:first-child {
  color: rgba(255, 255, 255, 0.85);
}

.hero-desc {
  color: var(--muted);
  max-width: 540px;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 30px;
}

.primary,
.ghost,
.contact-form button,
.chip-footer button {
  padding: 12px 22px;
  border-radius: 12px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary {
  background: var(--accent);
  color: #fff;
  /* box-shadow: 0 14px 25px rgba(255, 107, 44, 0.35); */
}

.ghost {
  background: transparent;
  border: 1px solid var(--stroke);
}

.primary:hover,
.ghost:hover,
.contact-form button:hover,
.chip-footer button:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(26, 26, 26, 0.18);
}

.hero-metrics {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
}

.hero-metrics strong {
  font-size: 20px;
  display: block;
}

.hero-visual {
  display: grid;
  gap: 24px;
}

.chip-card,
.stats-card {
  background: var(--card);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow);
}

.chip-top {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
}

.chip-card h3 {
  font-size: 22px;
  margin: 16px 0 8px;
}

.chip-card p {
  color: var(--muted);
  margin-bottom: 20px;
}

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

.chip-footer span {
  font-size: 12px;
  color: var(--muted);
}

.stats-card h4 {
  font-size: 18px;
  margin-bottom: 12px;
}

.stats-card ul {
  list-style: none;
  display: grid;
  gap: 10px;
  color: var(--muted);
}

.section {
  padding: 90px 8vw;
  position: relative;
  z-index: 1;
}

.section.alt {
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.6), rgba(240, 235, 226, 0.85));
  border-top: 1px solid var(--stroke);
  border-bottom: 1px solid var(--stroke);
}

.section-title {
  margin-bottom: 36px;
}

.section-title p {
  color: var(--accent-strong);
  font-weight: 600;
  margin-bottom: 8px;
}

.section-title h2 {
  font-size: clamp(26px, 3vw, 38px);
}

.section-media {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.section-media img {
  width: min(320px, 80%);
  max-width: 320px;
  border-radius: 24px;
  border: 1px solid rgba(26, 26, 26, 0.08);
  box-shadow: 0 16px 30px rgba(26, 26, 26, 0.08);
}

.about-grid,
.service-grid,
.category-grid,
.resource-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.about-card,
.service-card,
.category-card,
.resource-card {
  background: var(--card);
  border-radius: 18px;
  padding: 22px;
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow);
  min-height: 160px;
}

.about-card h3,
.service-card h3,
.category-card h3,
.resource-card h3 {
  margin-bottom: 10px;
  font-size: 18px;
}

.about-card p,
.service-card p,
.category-card p,
.resource-card p {
  color: var(--muted);
}

.category-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-decoration: none;
  color: inherit;
}

.category-media {
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(47, 111, 179, 0.2), rgba(47, 111, 179, 0.6));
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.category-media img {
  width: 100%;
  max-height: 120px;
  object-fit: contain;
}

.card-media {
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(47, 111, 179, 0.15), rgba(47, 111, 179, 0.45));
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

.card-media img {
  width: 100%;
  max-width: 160px;
  object-fit: contain;
}

.contact {
  padding-bottom: 120px;
}

.contact-card {
  background: var(--card);
  border-radius: 30px;
  border: 1px solid var(--stroke);
  padding: 40px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 32px;
  box-shadow: var(--shadow);
}

.contact-info {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.contact-info span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}
.contact-info a {
  color: var(--accent-strong);
  text-decoration: none;
}

.contact-form {
  display: grid;
  gap: 16px;
}

.contact-form label {
  font-size: 14px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.contact-form input,
.contact-form textarea {
  border-radius: 12px;
  border: 1px solid var(--stroke);
  padding: 12px;
  font-family: inherit;
  resize: vertical;
}

.contact-form button {
  background: var(--accent-strong);
  color: #fff;
}

.form-note {
  font-size: 12px;
  color: var(--muted);
}

.footer {
  padding: 40px 8vw 60px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
}

.footer-copy {
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .contact-card {
    grid-template-columns: 1fr;
  }

.nav {
  flex-direction: column;
  align-items: flex-start;
}

  .nav-actions {
    width: 100%;
    flex-wrap: wrap;
    justify-content: space-between;
  }

.nav-links {
  gap: 12px;
}

.brand-logo {
  width: 110px;
}
}

@media (max-width: 720px) {
  .hero {
    padding: 24px 6vw 80px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-metrics {
    gap: 18px;
  }

  .footer {
    flex-direction: column;
  }

  .hero-banner {
    height: auto;
    margin: 20px 6vw 0;
    padding: 26px 8vw 32px;
    min-height: auto;
    flex-direction: column;
    align-items: flex-start;
  }
}