:root {
  color-scheme: light;
  --bg: #f4f8fb;
  --surface: #ffffff;
  --text: #162536;
  --muted: #5a6b80;
  --primary: #2b7de9;
  --accent: #23b0c7;
  --border: #dfe7f2;
  --shadow: 0 18px 40px rgba(33, 107, 196, 0.18);
  --radius: 16px;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

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

.logo-box {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 6px 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-img {
  width: 84px;
  height: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

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

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--muted);
}

.nav a {
  position: relative;
  padding-bottom: 2px;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, rgba(35, 176, 199, 0.9), rgba(43, 125, 233, 0.9));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

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

.nav a:hover::after {
  transform: scaleX(1);
}

.hero {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at top left, rgba(43, 125, 233, 0.16), transparent 52%),
    radial-gradient(circle at 80% 20%, rgba(35, 176, 199, 0.18), transparent 48%),
    linear-gradient(135deg, #f8fbff 0%, #eef4fb 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 320px;
  background: linear-gradient(120deg, rgba(43, 125, 233, 0.22), rgba(35, 176, 199, 0.12));
  transform: rotate(-4deg);
  opacity: 0.7;
  animation: floatGlow 10s ease-in-out infinite;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(35, 176, 199, 0.22) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.4;
  pointer-events: none;
  animation: gridMove 18s linear infinite;
}

.hero-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-tag {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: 0.08em;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 16px;
}

.hero-desc {
  color: var(--muted);
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-card {
  background: rgba(255, 255, 255, 0.88);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(43, 125, 233, 0.15);
  backdrop-filter: blur(6px);
  display: grid;
  gap: 16px;
  max-width: 320px;
  width: 100%;
  justify-self: end;
  animation: floatCard 8s ease-in-out infinite;
}

.stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.stat-number {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(90deg, #2b7de9, #23b0c7);
  -webkit-background-clip: text;
  color: transparent;
}

.stat-label {
  color: var(--muted);
}

.section {
  padding: 64px 0;
  position: relative;
}

.section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(15, 23, 42, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.15;
  pointer-events: none;
}

.section > .container {
  position: relative;
  z-index: 1;
}

.section.alt {
  background: #f4f7fa;
}

.section.alt::before {
  opacity: 0.25;
}

.section-culture {
  background: linear-gradient(135deg, #eef6ff 0%, #f8fbff 100%);
  color: #0f1f33;
}

.section-culture .section-title p {
  color: #3c4b60;
}

.section-culture::before {
  opacity: 0.12;
}

.section-title {
  margin-bottom: 28px;
}

.section-title h2 {
  font-size: 26px;
  margin-bottom: 8px;
  position: relative;
  padding-left: 16px;
}

.section-title h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 6px;
  height: 22px;
  background: linear-gradient(180deg, #2b7de9, #23b0c7);
  border-radius: 6px;
  box-shadow: 0 6px 16px rgba(43, 125, 233, 0.3);
}

.section-advantages .section-title h2::before {
  background: var(--accent);
}

.section-services .section-title h2::before {
  background: #0a6b75;
}

.section-partners .section-title h2::before {
  background: #587a8a;
}

.section-process .section-title h2::before {
  background: #2f7a6e;
}

.section-culture .section-title h2::before {
  background: #6a6aa7;
}

.section-contact .section-title h2::before {
  background: #4a7a9a;
}

.section-title p {
  color: var(--muted);
}

.section-title.sub {
  margin-top: 40px;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.card {
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid rgba(43, 125, 233, 0.16);
  box-shadow: 0 14px 30px rgba(43, 125, 233, 0.16);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 34px rgba(43, 125, 233, 0.2);
}

.section-about .card {
  background: linear-gradient(135deg, #ffffff 0%, #f1f7ff 100%);
  border: 1px solid rgba(43, 125, 233, 0.18);
  border-left: 4px solid rgba(43, 125, 233, 0.45);
}

.section-advantages .card {
  background: linear-gradient(180deg, #ffffff 0%, #f6f9fb 100%);
}

.section-services .card {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 14px 0 14px 18px;
  position: relative;
}

.section-services .card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 20px;
  border-radius: 8px;
  background: linear-gradient(180deg, #2b7de9, #23b0c7);
  box-shadow: 0 8px 18px rgba(43, 125, 233, 0.3);
}

.section-services .card:hover {
  transform: translateX(6px);
  box-shadow: none;
}

.section-culture .card:not(.culture-card) {
  background: #ffffff;
  color: #162536;
  border: 1px solid rgba(43, 125, 233, 0.18);
  box-shadow: 0 14px 30px rgba(43, 125, 233, 0.12);
}

.section-culture .card:not(.culture-card) p {
  color: #3c4b60;
}

.culture-card {
  position: relative;
  min-height: 170px;
  border: none;
  padding: 18px;
  color: #ffffff;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  box-shadow: 0 20px 40px rgba(24, 80, 160, 0.35);
  overflow: hidden;
}

.culture-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, rgba(21, 46, 84, 0.25), rgba(8, 22, 38, 0.6));
}

.culture-card h3 {
  position: relative;
  z-index: 1;
  font-weight: 600;
}

.culture-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 26px 48px rgba(24, 80, 160, 0.45);
}

.culture-env {
  background-image: url("culture-env.jpg");
}

.culture-training {
  background-image: url("culture-training.jpg");
}

.culture-competition {
  background-image: url("culture-competition.jpg");
}

.culture-life {
  background-image: url("culture-life.jpg");
}

.list {
  margin-top: 12px;
  padding-left: 18px;
  color: var(--muted);
}

.list li {
  margin-bottom: 6px;
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  font-size: 14px;
  color: var(--muted);
}

.partner-grid span {
  background: linear-gradient(180deg, #ffffff 0%, #f3f8ff 100%);
  border: 1px solid rgba(43, 125, 233, 0.16);
  padding: 12px 14px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 10px 20px rgba(43, 125, 233, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.partner-grid span:hover {
  transform: translateY(-4px);
  border-color: rgba(43, 125, 233, 0.4);
  box-shadow: 0 16px 28px rgba(43, 125, 233, 0.2);
}

.section-process .process {
  display: grid;
  gap: 16px;
  color: var(--muted);
  list-style: none;
  padding-left: 18px;
  position: relative;
  counter-reset: step;
}

.section-process .process::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, rgba(43, 125, 233, 0.6), rgba(35, 176, 199, 0.6));
  opacity: 0.7;
}

.section-process .process li {
  background: transparent;
  border: none;
  padding: 6px 12px 6px 26px;
  position: relative;
}

.section-process .process li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: -2px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2b7de9, #23b0c7);
  color: #ffffff;
  display: grid;
  place-items: center;
  font-weight: 600;
  font-size: 10px;
  box-shadow: 0 6px 14px rgba(43, 125, 233, 0.3);
}

.contact-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 26px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}


.btn {
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.btn.primary {
  background: linear-gradient(135deg, #2b7de9, #23b0c7);
  color: white;
  border-color: transparent;
  box-shadow: 0 12px 24px rgba(43, 125, 233, 0.25);
  animation: glowPulse 3.6s ease-in-out infinite;
}

.btn.primary:hover {
  background: linear-gradient(135deg, #1f6fe0, #1ca1b6);
}

.btn.ghost {
  border: 1px solid rgba(43, 125, 233, 0.3);
  color: var(--primary);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(6px);
}

.btn.ghost:hover {
  border-color: rgba(43, 125, 233, 0.6);
  color: #1f6fe0;
}

.footer {
  padding: 28px 0 40px;
  background: #101a1f;
  color: #dbe3ea;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  background: #ffffff;
  padding: 6px 10px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-logo img {
  width: 64px;
  height: auto;
}

.footer-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: right;
}

.icp {
  color: #dbe3ea;
}

.icp:hover {
  color: #ffffff;
}

@keyframes floatGlow {
  0%,
  100% {
    transform: translateY(0) rotate(-4deg);
  }
  50% {
    transform: translateY(14px) rotate(-3deg);
  }
}

@keyframes gridMove {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 120px 120px;
  }
}

@keyframes glowPulse {
  0%,
  100% {
    box-shadow: 0 12px 24px rgba(43, 125, 233, 0.25);
  }
  50% {
    box-shadow: 0 18px 36px rgba(43, 125, 233, 0.35);
  }
}

@keyframes floatCard {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(8px);
  }
}

@media (max-width: 900px) {
  .nav {
    gap: 10px;
  }

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

@media (max-width: 600px) {
  .hero {
    padding: 60px 0 40px;
  }

  .section {
    padding: 50px 0;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}