:root {
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --purple-600: #9333ea;
  --indigo-600: #4f46e5;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-400: #9ca3af;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
}

* { box-sizing: border-box; border-color: #e5e7eb; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #fff;
  color: var(--gray-900);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-feature-settings: "rlig" 1, "calt" 1;
}
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
img { max-width: 100%; display: block; }
.icon { display: inline-block; vertical-align: middle; flex-shrink: 0; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--gray-100); }
::-webkit-scrollbar-thumb { background: #9ca3af; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #4b5563; }

.page { min-height: 100vh; background: #fff; }
.container { width: 100%; max-width: 80rem; margin: 0 auto; padding: 0 1rem; }
@media (min-width: 640px) { .container { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .container { padding: 0 2rem; } }
.relative { position: relative; z-index: 1; }

.gradient-text {
  background: linear-gradient(to right, #2563eb, #9333ea, #4f46e5);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.glass-effect, .header.scrolled, .btn-glass, .glass-card {
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
}
.tech-grid {
  background-image:
    linear-gradient(rgba(59,130,246,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.1) 1px, transparent 1px);
  background-size: 50px 50px;
}

.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: transparent;
  transition: all .3s;
  animation: slideDown .6s ease;
}
.header.scrolled { box-shadow: 0 10px 15px -3px rgba(0,0,0,.1); }
.header-inner { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; }
.logo { display: flex; align-items: center; gap: .5rem; }
.logo:hover { transform: scale(1.05); }
.logo-mark { position: relative; display: inline-flex; }
.logo-img { width: 2rem; height: 2rem; object-fit: contain; display: block; }
.icon-blue { color: #2563eb; }
.icon-blue-light { color: #60a5fa; }
.icon-zap { color: #facc15; position: absolute; top: -4px; right: -4px; }
.logo-text { font-size: 1.5rem; font-weight: 700; }
.nav-desktop { display: none; gap: 2rem; }
.nav-link {
  color: var(--gray-700); font-weight: 500; position: relative;
  transition: color .2s;
}
.nav-link:hover { color: #2563eb; }
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -4px; height: 2px; width: 0;
  background: #2563eb; transition: width .2s;
}
.nav-link:hover::after { width: 100%; }
.menu-btn { display: inline-flex; border: 0; background: transparent; padding: .5rem; border-radius: .5rem; cursor: pointer; }
.menu-btn:hover { background: var(--gray-100); }
.mobile-menu {
  display: none; overflow: hidden;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,.85);
  border-top: 1px solid rgba(255,255,255,.2);
  padding: 1rem 1.25rem 1.25rem;
}
.mobile-menu.open { display: block; }
.mobile-link { display: block; padding: .5rem 0; color: var(--gray-700); font-weight: 500; }
@media (min-width: 768px) {
  .nav-desktop { display: flex; }
  .hide-mobile { display: inline-flex !important; }
  .menu-btn, .mobile-menu { display: none !important; }
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border: 0; cursor: pointer; font-weight: 600; transition: all .3s;
}
.btn-round { border-radius: 999px; padding: .5rem 1.5rem; }
.btn-gradient {
  background: linear-gradient(to right, #2563eb, #9333ea);
  color: #fff; box-shadow: 0 10px 15px -3px rgba(37,99,235,.3);
  border-radius: 999px; padding: .5rem 1.5rem;
}
.btn-gradient:hover { transform: scale(1.05); box-shadow: 0 20px 40px rgba(59,130,246,.3); }
.btn-gradient:active { transform: scale(.95); }
.btn-xl { padding: 1rem 2rem; font-size: 1.125rem; border-radius: 999px; }
.btn-glass { color: var(--gray-700); border-radius: 999px; padding: 1rem 2rem; }
.btn-glass:hover { background: rgba(255,255,255,.2); transform: scale(1.05); }
.btn-dark {
  width: 100%; background: linear-gradient(to right, #1f2937, #111827);
  color: #fff; border-radius: .75rem; padding: .75rem 1.5rem; font-weight: 500;
}
.btn-dark:hover { background: linear-gradient(to right, #111827, #000); transform: scale(1.02); }
.btn-white { background: #fff; color: #2563eb; border-radius: 999px; box-shadow: 0 10px 15px -3px rgba(0,0,0,.1); }
.btn-white:hover { transform: scale(1.05); }
.btn-outline-white { border: 2px solid #fff; color: #fff; background: transparent; border-radius: 999px; }
.btn-outline-white:hover { background: #fff; color: #111827; }
.btn-block { width: 100%; }
.hide-mobile { display: none !important; }
.icon-shift { transition: transform .2s; }
.btn:hover .icon-shift { transform: translateX(4px); }
.btn:hover .icon-spin { transform: rotate(12deg); }

.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center;
  overflow: hidden; background: linear-gradient(to bottom right, #f8fafc, #eff6ff, #e0e7ff);
}
.hero-grid { position: absolute; inset: 0; opacity: .3; }
.float-icon { position: absolute; color: #bfdbfe; animation: float 4s ease-in-out infinite; }
.float-1 { left: 150px; top: 50%; animation-delay: 0s; }
.float-2 { left: 0; top: 80%; animation-delay: 1s; }
.float-3 { left: 170px; top: 20%; animation-delay: 2s; }
.orb {
  position: absolute; width: 18rem; height: 18rem; border-radius: 999px;
  filter: blur(40px); opacity: .2; mix-blend-mode: multiply;
  animation: bounceSlow 2s infinite;
}
.orb-blue { background: #60a5fa; top: 5rem; left: 5rem; }
.orb-purple { background: #c084fc; top: 10rem; right: 5rem; animation-delay: 1s; }
.orb-indigo { background: #818cf8; bottom: 5rem; left: 50%; animation-delay: 2s; }
.hero-content { position: relative; z-index: 10; text-align: center; padding: 6rem 1rem 4rem; max-width: 64rem; }
.hero-title { font-size: 3rem; font-weight: 700; line-height: 1.15; margin: 0 0 1.5rem; animation: popIn .8s ease; }
.hero-title span { display: block; margin-bottom: .5rem; }
.hero-title-dark { color: #1f2937; }
.hero-sub { font-size: 1.25rem; color: var(--gray-600); max-width: 48rem; margin: 0 auto 3rem; line-height: 1.75; }
.text-semibold { font-weight: 600; }
.hero-actions { display: flex; flex-direction: column; gap: 1.5rem; align-items: center; justify-content: center; margin-bottom: 4rem; }
.hero-stats { display: grid; gap: 2rem; max-width: 42rem; margin: 0 auto; }
.glass-card { padding: 1.5rem; border-radius: 1rem; text-align: center; }
.glass-card:hover { background: rgba(255,255,255,.2); }
.stat-num { font-size: 1.875rem; font-weight: 700; margin-bottom: .5rem; }
.stat-label { color: var(--gray-600); font-weight: 500; }
.scroll-indicator { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); }
.scroll-mouse {
  width: 1.5rem; height: 2.5rem; border: 2px solid #9ca3af; border-radius: 999px;
  display: flex; justify-content: center; animation: bob 2s infinite;
}
.scroll-dot { width: 4px; height: 12px; background: #9ca3af; border-radius: 999px; margin-top: 8px; animation: bob 2s infinite; }
@media (min-width: 640px) {
  .hero-title { font-size: 3.75rem; }
  .hero-sub { font-size: 1.5rem; }
  .hero-actions { flex-direction: row; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1024px) { .hero-title { font-size: 4.5rem; } }

.section { position: relative; overflow: hidden; padding: 5rem 0; }
.section-white { background: #fff; }
.section-gray { background: var(--gray-50); }
.section-head { text-align: center; margin-bottom: 4rem; }
.section-title { font-size: 2.25rem; font-weight: 700; margin: 0 0 1.5rem; }
.section-desc { font-size: 1.25rem; color: var(--gray-600); max-width: 48rem; margin: 0 auto; line-height: 1.75; }
@media (min-width: 640px) { .section-title { font-size: 3rem; } }

.blob { position: absolute; width: 16rem; height: 16rem; border-radius: 999px; filter: blur(48px); }
.blob-blue { background: #dbeafe; }
.blob-purple { background: #f3e8ff; }
.about-blob-1 { top: 5rem; right: 2.5rem; opacity: .5; }
.about-blob-2 { bottom: 5rem; left: 2.5rem; opacity: .5; }
.team-blob-1 { top: 5rem; left: 2.5rem; width: 18rem; height: 18rem; opacity: .3; }
.team-blob-2 { bottom: 5rem; right: 2.5rem; width: 18rem; height: 18rem; opacity: .3; }
.contact-blob-1 { top: 5rem; right: 2.5rem; width: 24rem; height: 24rem; opacity: .2; }
.contact-blob-2 { bottom: 5rem; left: 2.5rem; width: 24rem; height: 24rem; opacity: .2; }
.services-grid { position: absolute; inset: 0; opacity: .2; }

.grid-4, .grid-3 { display: grid; gap: 2rem; margin-bottom: 5rem; }
@media (min-width: 768px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-4 { grid-template-columns: repeat(4, 1fr); } .grid-3 { grid-template-columns: repeat(3, 1fr); } }

.card, .service-card, .team-card {
  background: #fff; padding: 2rem; border-radius: 1rem; box-shadow: 0 10px 15px -3px rgba(0,0,0,.1);
  border: 1px solid #f3f4f6; position: relative; overflow: hidden;
}
.service-card, .team-card { border-radius: 1.5rem; }
.hover-lift { transition: transform .3s, box-shadow .3s; }
.hover-lift:hover { transform: scale(1.02); box-shadow: 0 25px 50px rgba(0,0,0,.15); }
.icon-box {
  width: 4rem; height: 4rem; border-radius: 1rem; display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.5rem; transition: transform .3s;
}
.icon-box.sm { width: 3rem; height: 3rem; border-radius: .75rem; margin-bottom: 1rem; }
.card:hover .icon-box, .service-card:hover .icon-box { transform: scale(1.1); }
.icon-white { color: #fff; }
.icon-green { color: #22c55e; }
.icon-muted { color: #9ca3af; }
.card-title { font-size: 1.25rem; font-weight: 700; color: #1f2937; margin: 0 0 1rem; }
.card-text { color: var(--gray-600); line-height: 1.75; margin: 0 0 1.5rem; }
.service-title { font-size: 1.5rem; font-weight: 700; color: #1f2937; margin: 0 0 1rem; position: relative; z-index: 1; }
.service-blob {
  position: absolute; top: 0; right: 0; width: 8rem; height: 8rem; border-radius: 999px;
  transform: translate(4rem, -4rem); opacity: .5; transition: transform .5s;
}
.service-card:hover .service-blob { transform: translate(4rem, -4rem) scale(1.5); }
.feature-list { list-style: none; padding: 0; margin: 0 0 1.5rem; position: relative; z-index: 1; }
.feature-list li { display: flex; align-items: center; gap: .75rem; font-size: .875rem; color: var(--gray-600); margin-bottom: .75rem; }

.from-blue-500-to-cyan-500 { background: linear-gradient(to right, #3b82f6, #06b6d4); }
.from-purple-500-to-pink-500 { background: linear-gradient(to right, #a855f7, #ec4899); }
.from-orange-500-to-red-500 { background: linear-gradient(to right, #f97316, #ef4444); }
.from-green-500-to-emerald-500 { background: linear-gradient(to right, #22c55e, #10b981); }
.from-red-500-to-pink-500 { background: linear-gradient(to right, #ef4444, #ec4899); }
.from-indigo-500-to-purple-500 { background: linear-gradient(to right, #6366f1, #a855f7); }
.bg-blue-50 { background: #eff6ff; }
.bg-green-50 { background: #f0fdf4; }
.bg-purple-50 { background: #faf5ff; }
.bg-orange-50 { background: #fff7ed; }
.bg-red-50 { background: #fef2f2; }
.bg-indigo-50 { background: #eef2ff; }

.mission {
  background: linear-gradient(to right, #2563eb, #9333ea);
  border-radius: 1.5rem; padding: 3rem; color: #fff;
}
.mission-grid { display: grid; gap: 3rem; align-items: center; }
@media (min-width: 768px) { .mission-grid { grid-template-columns: 1fr 1fr; } }
.mission-title { font-size: 1.875rem; font-weight: 700; margin: 0 0 1.5rem; }
.mission-text { font-size: 1.125rem; line-height: 1.75; color: #dbeafe; margin: 0 0 1.5rem; }
.chip-row { display: flex; flex-wrap: wrap; gap: 1rem; }
.chip-row.center { justify-content: center; }
.chip { padding: .5rem 1rem; background: rgba(255,255,255,.2); border-radius: 999px; font-size: .875rem; font-weight: 500; backdrop-filter: blur(4px); }
.chip:hover { transform: scale(1.1); }
.chip-gray { padding: .25rem .75rem; background: var(--gray-100); color: var(--gray-700); border-radius: 999px; font-size: .75rem; font-weight: 500; }
.chip-gray:hover { background: #dbeafe; color: #1d4ed8; }
.mission-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.mission-stat { text-align: center; padding: 1rem; background: rgba(255,255,255,.1); border-radius: 1rem; backdrop-filter: blur(4px); }
.mission-num { font-size: 1.875rem; font-weight: 700; margin-bottom: .5rem; }
.mission-label { color: #dbeafe; font-size: .875rem; }

.cta-banner, .join-banner {
  margin-top: 5rem; text-align: center; border-radius: 1.5rem; padding: 3rem; color: #fff; position: relative; overflow: hidden;
}
.cta-banner { background: linear-gradient(to right, #2563eb, #9333ea); }
.join-banner { background: linear-gradient(to right, #111827, #1f2937); }
.cta-banner h3, .join-banner h3 { font-size: 1.875rem; margin: 0 0 1rem; position: relative; }
.cta-banner p { font-size: 1.25rem; color: #dbeafe; max-width: 42rem; margin: 0 auto 2rem; position: relative; }
.join-banner p { font-size: 1.25rem; color: #d1d5db; max-width: 42rem; margin: 0 auto 2rem; }
.cta-deco::before, .cta-deco::after {
  content: ""; position: absolute; border-radius: 999px; background: rgba(255,255,255,.08);
}
.cta-deco::before { width: 5rem; height: 5rem; top: 2.5rem; left: 2.5rem; }
.cta-deco::after { width: 8rem; height: 8rem; bottom: 2.5rem; right: 2.5rem; }

.team-card { text-align: center; }
.team-hover-blob {
  position: absolute; top: 0; right: 0; width: 8rem; height: 8rem; border-radius: 999px;
  background: linear-gradient(to bottom right, #dbeafe, #f3e8ff);
  transform: translate(4rem, -4rem); opacity: 0; transition: opacity .5s;
}
.team-card:hover .team-hover-blob { opacity: 1; }
.avatar-wrap { position: relative; width: 6rem; height: 6rem; margin: 0 auto 1.5rem; }
.avatar-wrap img { width: 100%; height: 100%; object-fit: cover; border-radius: 1rem; box-shadow: 0 10px 15px -3px rgba(0,0,0,.1); }
.online-dot {
  position: absolute; bottom: -6px; right: -6px; width: 1.5rem; height: 1.5rem;
  background: #22c55e; border: 4px solid #fff; border-radius: 999px;
}
.team-card h3 { font-size: 1.5rem; margin: 0 0 .5rem; color: #1f2937; }
.team-role { color: #2563eb; font-weight: 600; margin: 0 0 1rem; }
.social-row { display: flex; justify-content: center; gap: 1rem; margin-top: 1.5rem; }
.social-btn {
  width: 2.5rem; height: 2.5rem; border-radius: 999px; background: var(--gray-100);
  color: var(--gray-600); display: flex; align-items: center; justify-content: center; transition: .2s;
}
.social-btn:hover { background: #dbeafe; color: #2563eb; transform: scale(1.2) rotate(5deg); }

.contact-grid { display: grid; gap: 3rem; align-items: stretch; }
@media (min-width: 1024px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
.contact-form, .mini-card, .map-box {
  background: #fff; border-radius: 1.5rem; padding: 2rem; box-shadow: 0 20px 25px -5px rgba(0,0,0,.1); border: 1px solid #f3f4f6;
}
.contact-form {
  display: flex; flex-direction: column; height: 100%; min-height: 28rem;
}
.contact-form h3 { font-size: 1.5rem; margin: 0 0 1.5rem; color: #1f2937; }
.form-row { display: grid; gap: 1.5rem; }
@media (min-width: 640px) { .form-row { grid-template-columns: 1fr 1fr; } }
.contact-form input, .contact-form textarea, .news-form input {
  width: 100%; padding: .75rem 1rem; border: 1px solid #d1d5db; border-radius: .75rem;
  background: var(--gray-50); margin-bottom: 1.5rem; outline: none; transition: .2s;
}
.contact-form textarea {
  resize: none; flex: 1 1 auto; min-height: 12rem; height: auto;
}
.contact-form input:focus, .contact-form textarea:focus, .news-form input:focus {
  background: #fff; box-shadow: 0 0 0 2px #3b82f6; border-color: transparent;
}
.form-msg { min-height: 1.5rem; color: #16a34a; font-size: .875rem; }
.contact-cards { display: grid; gap: 1.5rem; }
@media (min-width: 640px) { .contact-cards { grid-template-columns: 1fr 1fr; } }
.mini-card { border-radius: 1rem; padding: 1.5rem; box-shadow: 0 10px 15px -3px rgba(0,0,0,.08); }
.mini-card h4 { margin: 0 0 .5rem; font-size: 1.125rem; }
.mini-strong { color: #2563eb; font-weight: 600; margin: 0 0 .5rem; }
.mini-desc { color: var(--gray-600); font-size: .875rem; margin: 0; }
.why-box { background: linear-gradient(to right, #2563eb, #9333ea); border-radius: 1.5rem; padding: 2rem; color: #fff; margin: 2rem 0; }
.why-box h4 { font-size: 1.5rem; margin: 0 0 1.5rem; }
.why-item { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.why-icon { width: 2.5rem; height: 2.5rem; background: rgba(255,255,255,.2); border-radius: .75rem; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.why-item strong { display: block; margin-bottom: .25rem; }
.why-item p { margin: 0; color: #dbeafe; font-size: .875rem; }
.map-box {
  height: 16rem; display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: #6b7280; text-align: center; overflow: hidden; position: relative;
}
.map-img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0;
}
.map-box.has-map { justify-content: flex-end; padding: 0; }
.map-caption { width: 100%; position: relative; z-index: 1; }
.map-box.has-map .map-caption {
  background: linear-gradient(to top, rgba(15, 23, 42, .72), rgba(15, 23, 42, .15));
  color: #fff; padding: 1.4rem 1.2rem .9rem;
}
.map-title { font-weight: 500; color: #374151; margin: 1rem 0 .25rem; }
.map-box.has-map .map-title { color: #fff; margin: 0 0 .25rem; }
.map-box.has-map .map-caption p { margin: 0; }

.footer { background: #111827; color: #fff; position: relative; overflow: hidden; }
.footer-grid { position: absolute; inset: 0; opacity: .05; }
.footer-main { position: relative; z-index: 1; padding: 4rem 0; display: grid; gap: 3rem; }
@media (min-width: 1024px) { .footer-main { grid-template-columns: 1.2fr 1fr 1fr 1fr 1fr; } }
.footer-desc { color: #9ca3af; line-height: 1.75; margin: 1.5rem 0; }
.footer-contact p,
.footer-contact-item {
  display: flex; align-items: center; gap: .75rem; color: #9ca3af; font-size: .875rem; margin: .5rem 0;
}
.footer-contact a.footer-contact-item { color: #9ca3af; }
.footer-contact p:hover,
.footer-contact-item:hover { color: #fff; transform: translateX(4px); }
.footer-col h3 { font-size: 1.125rem; margin: 0 0 1.5rem; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col a { color: #9ca3af; font-size: .875rem; display: block; margin-bottom: .75rem; }
.footer-col a:hover { color: #fff; transform: translateX(4px); }
.footer-news { border-top: 1px solid #1f2937; position: relative; z-index: 1; padding: 3rem 0 1rem; }
.news-inner { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 1024px) { .news-inner { grid-template-columns: 1fr 1fr; } }
.news-inner h3 { font-size: 1.5rem; margin: 0 0 .5rem; }
.news-inner p { color: #9ca3af; margin: 0; }
.news-form { display: flex; flex-direction: column; gap: 1rem; }
.news-form input { margin: 0; background: #1f2937; border-color: #374151; color: #fff; }
@media (min-width: 640px) { .news-form { flex-direction: row; } .news-form input { flex: 1; } }
.footer-bottom { border-top: 1px solid #1f2937; position: relative; z-index: 1; }
.bottom-inner { display: flex; justify-content: center; padding: 1.25rem 0; color: #9ca3af; font-size: .875rem; }
.icp-text {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: .35rem .85rem;
  margin: 0; text-align: center;
}
.network-link, .icp-link { color: #9ca3af; display: inline-flex; align-items: center; gap: .3rem; }
.network-link:hover, .icp-link:hover { color: #fff; }
.beian-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  display: block;
  object-fit: contain;
}
.footer-line { height: 4px; background: linear-gradient(to right, #2563eb, #9333ea, #db2777); }

.hp-field {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.contact-form, .news-form { position: relative; }
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

@keyframes slideDown { from { transform: translateY(-100%); } to { transform: none; } }
@keyframes popIn { from { transform: scale(.5); opacity: 0; } to { transform: scale(1); opacity: 1; } }
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0); }
  50% { transform: translateY(-20px) rotate(10deg); }
}
@keyframes bounceSlow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}