* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Helvetica, "Microsoft YaHei", Arial, sans-serif;
  min-height: 100vh;
  background: #ffffff;
  color: #1e293b;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ========== 导航栏 ========== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 20px 64px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  transition: all .3s ease;
}
.navbar.scrolled {
  padding: 14px 64px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.nav-brand {
  display: flex; align-items: center; gap: 14px;
  font-size: 18px; font-weight: 700; color: #0f172a;
  text-decoration: none;
}
.nav-brand .logo-img {
  width: 44px; height: 44px; border-radius: 12px;
  object-fit: contain;
  box-shadow: 0 4px 12px rgba(15,23,42,0.08);
}
.nav-brand .brand-sub {
  font-size: 10.5px; font-weight: 400; color: #64748b;
  letter-spacing: 0.5px;
}
.nav-menu { display: flex; align-items: center; gap: 40px; list-style: none; }
.nav-menu a {
  text-decoration: none; color: #475569; font-size: 15px; font-weight: 500;
  position: relative; padding: 8px 0; transition: color .2s;
}
.nav-menu a::after {
  content: ""; position: absolute; bottom: 0; left: 0;
  width: 0; height: 2px;
  background: linear-gradient(90deg, #0ea5e9, #2563eb);
  transition: width .3s ease;
}
.nav-menu a:hover { color: #0f172a; }
.nav-menu a:hover::after { width: 100%; }
.nav-cta {
  padding: 10px 24px; border-radius: 50px;
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  color: #fff !important; font-weight: 600; font-size: 14px;
  text-decoration: none; box-shadow: 0 4px 14px rgba(37,99,235,0.25);
  transition: all .2s;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37,99,235,0.35); }
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  position: absolute; top: calc(100% + 12px); right: 0;
  min-width: 280px; padding: 10px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(15,23,42,0.12), 0 4px 14px rgba(15,23,42,0.06);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: all .22s ease;
  z-index: 200;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown-menu:hover {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav-dropdown-menu::before {
  content: ""; position: absolute; top: -6px; right: 36px;
  width: 12px; height: 12px; background: rgba(255,255,255,0.95);
  border-left: 1px solid rgba(0,0,0,0.06);
  border-top: 1px solid rgba(0,0,0,0.06);
  transform: rotate(45deg);
}
.dd-item {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 14px; border-radius: 12px;
  text-decoration: none; color: #0f172a;
  transition: background .2s;
}
.dd-item + .dd-item { margin-top: 4px; }
.dd-item:hover { background: linear-gradient(135deg, rgba(14,165,233,0.06), rgba(37,99,235,0.06)); }
.dd-icon {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.dd-icon.blue { background: linear-gradient(135deg, #0ea5e9, #2563eb); box-shadow: 0 4px 12px rgba(37,99,235,0.3); }
.dd-icon.orange { background: linear-gradient(135deg, #f97316, #eab308); box-shadow: 0 4px 12px rgba(249,115,22,0.3); }
.dd-info { flex: 1; }
.dd-name { font-size: 14.5px; font-weight: 700; color: #0f172a; margin-bottom: 2px; }
.dd-en { font-size: 11.5px; color: #64748b; letter-spacing: 0.5px; }
.dd-arrow { color: #94a3b8; font-size: 16px; transition: all .2s; }
.dd-item:hover .dd-arrow { color: #2563eb; transform: translate(2px,-2px); }
.dd-item .pf-status-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: #cbd5e1; margin-right: 6px; vertical-align: middle;
  transition: background .3s;
}
.nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: #0f172a; }

/* ========== Hero 首屏 ========== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; overflow: hidden;
  padding: 120px 64px 80px;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(14,165,233,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 60%, rgba(37,99,235,0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(99,102,241,0.05) 0%, transparent 60%),
    linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(148,163,184,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,0.08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.hero-inner {
  position: relative; z-index: 2;
  max-width: 1280px; margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 64px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: 50px;
  background: rgba(14,165,233,0.08);
  border: 1px solid rgba(14,165,233,0.2);
  color: #0369a1; font-size: 13px; font-weight: 500;
  margin-bottom: 24px;
}
.hero-badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #0ea5e9; box-shadow: 0 0 0 4px rgba(14,165,233,0.2);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(14,165,233,0.2); }
  50% { box-shadow: 0 0 0 8px rgba(14,165,233,0); }
}
.hero-title {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 900; line-height: 1.15; color: #0f172a;
  letter-spacing: -1px; margin-bottom: 24px;
}
.hero-title .grad-text {
  background: linear-gradient(135deg, #0ea5e9 0%, #2563eb 50%, #6366f1 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 18px; color: #475569; line-height: 1.8;
  max-width: 520px; margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  padding: 16px 36px; border-radius: 50px;
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  color: #fff; font-weight: 600; font-size: 15px;
  text-decoration: none; display: inline-flex; align-items: center; gap: 10px;
  box-shadow: 0 8px 24px rgba(37,99,235,0.3);
  transition: all .25s;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(37,99,235,0.4);
}
.btn-outline {
  padding: 16px 36px; border-radius: 50px;
  background: #fff; color: #0f172a; font-weight: 600; font-size: 15px;
  text-decoration: none; display: inline-flex; align-items: center; gap: 10px;
  border: 2px solid #e2e8f0; transition: all .25s;
}
.btn-outline:hover {
  border-color: #2563eb; color: #2563eb;
  transform: translateY(-2px);
}
.hero-stats {
  display: flex; gap: 48px; margin-top: 56px; flex-wrap: wrap;
}
.stat-item .stat-num {
  font-size: 32px; font-weight: 900; color: #0f172a; line-height: 1;
  background: linear-gradient(135deg, #0f172a, #2563eb);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-item .stat-label {
  font-size: 13px; color: #64748b; margin-top: 6px;
}

/* Hero 右侧卡片 */
.hero-visual { position: relative; }
.float-card {
  position: relative;
  background: #fff;
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 20px 60px rgba(15,23,42,0.10), 0 2px 6px rgba(15,23,42,0.04);
  border: 1px solid rgba(0,0,0,0.04);
}
.float-card::before {
  content: ""; position: absolute; inset: -1px; z-index: -1;
  border-radius: 25px;
  background: linear-gradient(135deg, rgba(14,165,233,0.2), rgba(99,102,241,0.2));
  filter: blur(20px); opacity: 0.6;
}
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px; padding-bottom: 20px;
  border-bottom: 1px solid #f1f5f9;
}
.card-head .head-title { font-size: 17px; font-weight: 700; color: #0f172a; }
.card-head .head-tag {
  font-size: 12px; padding: 4px 12px; border-radius: 20px;
  background: #f1f5f9; color: #64748b; font-weight: 500;
  transition: all .3s ease;
}
.card-head .head-tag.ok {
  background: #ecfdf5; color: #059669;
}
.card-head .head-tag.error {
  background: #fef2f2; color: #dc2626;
}
.card-head .head-tag.checking {
  background: #f1f5f9; color: #64748b;
}
.platform-list { display: flex; flex-direction: column; gap: 20px; }
.pf-item {
  display: flex; align-items: center; gap: 16px;
  padding: 20px; border-radius: 16px;
  background: linear-gradient(135deg, #f8fafc, #ffffff);
  border: 1px solid #f1f5f9;
  text-decoration: none; color: inherit;
  transition: all .25s;
}
.pf-item:hover {
  transform: translateX(6px);
  border-color: #cbd5e1;
  box-shadow: 0 8px 24px rgba(15,23,42,0.06);
}
.pf-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; flex-shrink: 0;
}
.pf-icon.iabms { background: linear-gradient(135deg, #0ea5e9, #2563eb); box-shadow: 0 8px 20px rgba(37,99,235,0.25); }
.pf-icon.tsauto { background: linear-gradient(135deg, #f97316, #eab308); box-shadow: 0 8px 20px rgba(249,115,22,0.25); }
.pf-info { flex: 1; }
.pf-name { font-size: 16px; font-weight: 700; color: #0f172a; margin-bottom: 3px; }
.pf-en { font-size: 12px; color: #64748b; letter-spacing: 0.5px; }
.pf-arrow {
  width: 36px; height: 36px; border-radius: 50%;
  background: #f1f5f9; display: flex; align-items: center; justify-content: center;
  color: #475569; font-size: 14px; transition: all .2s;
}
.pf-status-dot.online {
  background: #10b981 !important;
  box-shadow: 0 0 0 3px rgba(16,185,129,0.2);
}
.pf-status-dot.offline {
  background: #ef4444 !important;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.2);
}
.pf-item:hover .pf-arrow {
  background: #2563eb; color: #fff;
  transform: rotate(-45deg);
}
.float-badge {
  position: absolute; top: -72px; right: 0; z-index: 3;
  padding: 10px 18px; border-radius: 14px;
  background: linear-gradient(135deg, #0f172a, #334155);
  color: #fff; font-size: 13px; font-weight: 600;
  box-shadow: 0 10px 30px rgba(15,23,42,0.3);
  text-align: right;
}
.float-badge small { display: block; font-size: 10px; opacity: 0.7; font-weight: 400; margin-bottom: 2px; }

/* ========== 通用区块 ========== */
section { padding: 100px 64px; position: relative; }
.section-head { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-block;
  padding: 6px 18px; border-radius: 50px;
  background: rgba(37,99,235,0.08);
  color: #2563eb; font-size: 13px; font-weight: 600;
  letter-spacing: 1px; margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 900; color: #0f172a; margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-desc {
  font-size: 16px; color: #64748b; max-width: 680px; margin: 0 auto; line-height: 1.8;
}
.container { max-width: 1280px; margin: 0 auto; }

/* ========== 关于公司 ========== */
.about { background: #f8fafc; }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.about-visual { position: relative; }
.about-card {
  background: #fff; border-radius: 24px; padding: 36px;
  box-shadow: 0 12px 40px rgba(15,23,42,0.08);
  border: 1px solid #f1f5f9;
}
.about-card h4 {
  font-size: 20px; font-weight: 700; color: #0f172a; margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px;
}
.about-card h4 .line {
  width: 4px; height: 24px; border-radius: 2px;
  background: linear-gradient(180deg, #0ea5e9, #2563eb);
}
.info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 24px; }
.info-item .label { font-size: 12px; color: #94a3b8; margin-bottom: 4px; }
.info-item .value { font-size: 14px; color: #0f172a; font-weight: 500; }
.about-card + .about-card { margin-top: 20px; }
.scope-text {
  font-size: 13.5px; color: #475569; line-height: 1.9;
  max-height: 180px; overflow: hidden;
}
.about-text h3 {
  font-size: 32px; font-weight: 900; color: #0f172a;
  margin-bottom: 20px; line-height: 1.3;
}
.about-text h3 em { font-style: normal; color: #2563eb; }
.about-text > p {
  font-size: 15px; color: #475569; line-height: 2;
  margin-bottom: 16px;
}
.feature-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.chip {
  padding: 8px 18px; border-radius: 50px;
  background: #fff; border: 1px solid #e2e8f0;
  font-size: 13px; color: #475569; font-weight: 500;
}
.chip.blue { background: rgba(37,99,235,0.06); border-color: rgba(37,99,235,0.15); color: #1e40af; }

/* ========== 核心业务 ========== */
.services { background: #fff; }
.svc-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px;
}
.svc-card {
  padding: 36px 28px; border-radius: 20px;
  background: #fff; border: 1px solid #f1f5f9;
  transition: all .3s ease;
  position: relative; overflow: hidden;
}
.svc-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--c1,#0ea5e9), var(--c2,#2563eb));
  transform: scaleX(0); transform-origin: left; transition: transform .35s ease;
}
.svc-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(15,23,42,0.08);
  border-color: transparent;
}
.svc-card:hover::before { transform: scaleX(1); }
.svc-icon {
  width: 64px; height: 64px; border-radius: 18px;
  display: flex; align-items: center; justify-content: center;
  font-size: 30px; margin-bottom: 24px;
  background: linear-gradient(135deg, var(--c1,#0ea5e9), var(--c2,#2563eb));
  box-shadow: 0 8px 24px rgba(37,99,235,0.2);
}
.svc-card:nth-child(1) { --c1:#0ea5e9; --c2:#2563eb; }
.svc-card:nth-child(2) { --c1:#f97316; --c2:#eab308; }
.svc-card:nth-child(3) { --c1:#8b5cf6; --c2:#a855f7; }
.svc-card:nth-child(4) { --c1:#10b981; --c2:#059669; }
.svc-card:nth-child(5) { --c1:#ef4444; --c2:#f97316; }
.svc-card:nth-child(6) { --c1:#06b6d4; --c2:#0ea5e9; }
.svc-title { font-size: 18px; font-weight: 700; color: #0f172a; margin-bottom: 10px; }
.svc-desc { font-size: 14px; color: #64748b; line-height: 1.8; }

/* ========== 数字化信息服务平台 ========== */
.platforms {
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  color: #fff;
  position: relative; overflow: hidden;
}
.platforms::before {
  content: ""; position: absolute; top: 50%; left: 50%;
  width: 900px; height: 900px; transform: translate(-50%,-50%);
  background: radial-gradient(circle, rgba(37,99,235,0.12) 0%, transparent 70%);
}
.platforms .section-head { position: relative; }
.platforms .section-tag { background: rgba(255,255,255,0.08); color: #93c5fd; }
.platforms .section-title { color: #fff; }
.platforms .section-desc { color: #94a3b8; }
.pf-big-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 28px; position: relative;
}
.pf-card {
  position: relative;
  border-radius: 28px; padding: 48px 44px;
  background: rgba(30,41,59,0.6);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  text-decoration: none; color: inherit;
  overflow: hidden; transition: all .35s ease;
}
.pf-card:hover {
  transform: translateY(-8px);
  border-color: rgba(99,102,241,0.3);
  box-shadow: 0 32px 64px rgba(0,0,0,0.4), 0 0 60px rgba(var(--glow),0.15);
}
.pf-card.a { --glow: 14,165,233; }
.pf-card.b { --glow: 249,115,22; }
.pf-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--grad);
}
.pf-card.a::before, .pf-card.a .pf-big-icon {
  --grad: linear-gradient(90deg, #0ea5e9, #2563eb, #6366f1);
}
.pf-card.b::before, .pf-card.b .pf-big-icon {
  --grad: linear-gradient(90deg, #f97316, #eab308, #f59e0b);
}
.pf-big-icon {
  width: 84px; height: 84px; border-radius: 24px;
  display: flex; align-items: center; justify-content: center;
  font-size: 42px; margin-bottom: 28px;
  background: var(--grad);
  box-shadow: 0 16px 40px rgba(var(--glow),0.3);
}
.pf-big-name {
  font-size: 30px; font-weight: 900; margin-bottom: 4px;
  color: #fff; letter-spacing: 1px;
}
.pf-big-en {
  font-size: 14px; color: #94a3b8; letter-spacing: 1.5px;
  margin-bottom: 24px; padding-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.pf-big-desc {
  font-size: 15px; color: #cbd5e1; line-height: 2;
  margin-bottom: 32px;
}
.pf-features { list-style: none; margin-bottom: 36px; }
.pf-features li {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 0; font-size: 14px; color: #e2e8f0;
}
.pf-features li::before {
  content: "✓"; font-size: 12px; font-weight: 900;
  width: 20px; height: 20px; border-radius: 50%;
  background: rgba(var(--glow),0.18);
  color: rgba(var(--glow));
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.pf-enter-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: 50px;
  background: var(--grad);
  color: #fff; font-size: 15px; font-weight: 700;
  box-shadow: 0 8px 24px rgba(var(--glow),0.3);
  transition: all .25s;
}
.pf-enter-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(var(--glow),0.45);
}
.pf-enter-btn .arrow { transition: transform .25s; }
.pf-card:hover .pf-enter-btn .arrow { transform: translateX(4px); }

/* ========== 公司优势 ========== */
.advantages { background: #fff; }
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.adv-item {
  text-align: center; padding: 40px 24px;
  border-radius: 20px; transition: all .3s;
}
.adv-item:hover {
  background: #f8fafc;
  transform: translateY(-4px);
}
.adv-num {
  font-size: 56px; font-weight: 900; line-height: 1;
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 20px; transition: all .3s;
}
.adv-item:hover .adv-num {
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.adv-title { font-size: 18px; font-weight: 700; color: #0f172a; margin-bottom: 10px; }
.adv-desc { font-size: 13.5px; color: #64748b; line-height: 1.8; }

/* ========== 联系方式 ========== */
.contact {
  background: linear-gradient(135deg, #eff6ff 0%, #f0f9ff 100%);
}
.contact-wrap {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: end;
}
.contact-info h3 {
  font-size: 36px; font-weight: 900; color: #0f172a;
  margin-bottom: 16px; line-height: 1.3;
}
.contact-info > p {
  font-size: 15px; color: #475569; line-height: 2;
  margin-bottom: 28px; max-width: 500px;
}
.contact-list { display: flex; flex-direction: column; gap: 12px; }
.ct-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 14px 20px; border-radius: 16px;
  background: #fff; border: 1px solid rgba(37,99,235,0.08);
  transition: all .25s;
}
.ct-item:hover {
  border-color: rgba(37,99,235,0.25);
  box-shadow: 0 8px 24px rgba(37,99,235,0.06);
}
.ct-icon {
  width: 42px; height: 42px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  background: linear-gradient(135deg, rgba(14,165,233,0.1), rgba(37,99,235,0.1));
}
.ct-label { font-size: 12px; color: #64748b; margin-bottom: 4px; }
.ct-value { font-size: 15px; color: #0f172a; font-weight: 600; }
.contact-card-right {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  border-radius: 28px; padding: 48px 40px;
  color: #fff; position: relative; overflow: hidden;
}
.contact-card-right::before {
  content: ""; position: absolute; top: -80px; right: -80px;
  width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,233,0.3), transparent 70%);
}
.contact-card-right h4 {
  font-size: 26px; font-weight: 800; margin-bottom: 12px; position: relative;
}
.contact-card-right .rc-sub {
  font-size: 14px; color: #94a3b8; margin-bottom: 32px; position: relative;
}
.rc-list { list-style: none; display: flex; flex-direction: column; gap: 14px; position: relative; }
.rc-list li {
  font-size: 14px; color: #cbd5e1;
  padding: 10px 0; padding-left: 20px; position: relative;
}
.rc-list li::before {
  content: ""; position: absolute; left: 0; top: 18px;
  width: 8px; height: 8px; border-radius: 50%;
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
}

/* ========== 页脚 ========== */
.footer {
  background: #0f172a; color: #94a3b8;
  padding: 40px 64px 24px;
}
.foot-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px; padding-bottom: 28px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.foot-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.foot-brand img { width: 40px; height: 40px; border-radius: 10px; }
.foot-brand .fb-name { color: #fff; font-size: 16px; font-weight: 700; }
.foot-desc { font-size: 13.5px; line-height: 1.7; max-width: 360px; }
.foot-col h5 {
  color: #fff; font-size: 15px; font-weight: 700;
  margin-bottom: 14px;
}
.foot-col ul { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.foot-col a {
  color: #94a3b8; text-decoration: none; font-size: 14px;
  line-height: 1.4; transition: color .2s;
}
.foot-col a:hover { color: #fff; }
.foot-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 20px; font-size: 13px; flex-wrap: wrap; gap: 12px;
}
.foot-bottom a { color: #94a3b8; text-decoration: none; }

/* ========== 移动端导航登录 ========== */
.nav-login-item { display: none; }
.nav-login-group { display: flex; flex-direction: column; gap: 8px; padding: 8px 0; }
.nav-login-link {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px; border-radius: 12px;
  background: #f8fafc; text-decoration: none;
  color: #0f172a; font-size: 14px; font-weight: 500;
  transition: all .2s;
  white-space: nowrap;
}
.nav-login-link:hover { background: #eff6ff; }
.nav-login-link > span:nth-child(2) { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.login-ico {
  width: 32px; height: 32px; border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; flex-shrink: 0;
}
.login-ico.tsauto { background: linear-gradient(135deg, #f97316, #eab308); }
.login-ico.iabms { background: linear-gradient(135deg, #0ea5e9, #2563eb); }
.login-arrow { flex-shrink: 0; color: #94a3b8; font-size: 13px; }

@media (max-width: 768px) {
  .nav-login-item { display: list-item; }
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  section, .hero { padding-left: 32px; padding-right: 32px; }
  .navbar, .footer { padding-left: 32px; padding-right: 32px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 520px; margin: 0 auto; width: 100%; }
  .float-badge { right: auto; left: 0; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .pf-big-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; gap: 40px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .about-text h3 { font-size: 28px; }
  .contact-info h3 { font-size: 30px; }
}

@media (max-width: 768px) {
  .navbar { padding: 16px 20px; }
  .navbar.scrolled { padding: 12px 20px; }
  .nav-brand { font-size: 15px; gap: 10px; }
  .nav-brand .logo-img { width: 36px; height: 36px; border-radius: 10px; }
  .nav-brand .brand-sub {
    display: none;
  }
  .nav-menu { display: none; }
  .nav-dropdown { display: none; }
  .nav-toggle {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 10px;
    background: #f1f5f9; font-size: 18px;
  }
  .nav-menu.open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    padding: 20px 24px; gap: 8px;
    border-top: 1px solid #f1f5f9;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    max-height: calc(100vh - 70px); overflow-y: auto;
    animation: navSlideDown .25s ease-out;
  }
  .nav-menu.open li a {
    display: block; padding: 12px 8px;
    font-size: 16px; color: #0f172a; font-weight: 500;
    border-radius: 10px;
  }
  .nav-menu.open .nav-login-link {
    display: flex; padding: 12px 14px;
  }
  .nav-menu.open li a:hover { background: #f1f5f9; color: #2563eb; }
  .nav-menu.open li a::after { display: none; }
  .nav-menu.open .nav-login-group {
    border-top: 1px solid #f1f5f9;
    padding-top: 12px; margin-top: 4px;
  }

  section { padding: 64px 20px; }
  .hero { padding: 100px 20px 60px; min-height: auto; }
  .hero-title { font-size: clamp(32px, 8vw, 44px); margin-bottom: 20px; }
  .hero-subtitle { font-size: 15px; margin-bottom: 32px; line-height: 1.8; }
  .hero-badge { font-size: 12px; padding: 5px 12px; margin-bottom: 20px; }
  .hero-actions { flex-direction: column; gap: 12px; align-items: stretch; }
  .btn-primary, .btn-outline { justify-content: center; padding: 14px 28px; font-size: 15px; }
  .hero-stats { gap: 28px; margin-top: 40px; justify-content: flex-start; }
  .stat-item { flex: 1; min-width: 80px; }
  .stat-item .stat-num { font-size: 24px; }
  .stat-item .stat-label { font-size: 12px; }

  .section-head { margin-bottom: 40px; }
  .section-title { font-size: clamp(24px, 6vw, 32px); }
  .section-desc { font-size: 14px; }

  .about-card { padding: 24px; border-radius: 18px; }
  .about-card h4 { font-size: 17px; margin-bottom: 16px; }
  .info-grid { grid-template-columns: 1fr; gap: 12px; }
  .scope-text { font-size: 13px; }
  .about-text h3 { font-size: 24px; }
  .about-text > p { font-size: 14px; line-height: 1.9; }
  .feature-chips { gap: 8px; }
  .chip { padding: 6px 14px; font-size: 12px; }

  .svc-grid { grid-template-columns: 1fr; gap: 16px; }
  .svc-card { padding: 28px 22px; border-radius: 18px; }
  .svc-icon { width: 56px; height: 56px; font-size: 26px; margin-bottom: 18px; }
  .svc-title { font-size: 17px; }
  .svc-desc { font-size: 13px; }

  .adv-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .adv-item { padding: 28px 16px; }
  .adv-num { font-size: 40px; margin-bottom: 12px; }
  .adv-title { font-size: 16px; }
  .adv-desc { font-size: 12.5px; line-height: 1.6; }

  .contact-info h3 { font-size: 26px; }
  .contact-info > p { font-size: 14px; line-height: 1.9; }
  .ct-item { padding: 12px 16px; gap: 12px; }
  .ct-icon { width: 36px; height: 36px; font-size: 17px; }
  .ct-value { font-size: 14px; }
  .contact-card-right { padding: 36px 24px; border-radius: 22px; }
  .contact-card-right h4 { font-size: 22px; }
  .rc-list li { font-size: 13px; padding: 8px 0 8px 16px; }

  .float-card { padding: 24px; border-radius: 20px; }
  .float-badge {
    position: static; margin-bottom: 16px;
    padding: 8px 14px; font-size: 12px; text-align: left;
    display: inline-block;
  }
  .card-head { margin-bottom: 20px; padding-bottom: 16px; }
  .card-head .head-title { font-size: 15px; }
  .pf-item { padding: 16px; gap: 12px; }
  .pf-icon { width: 44px; height: 44px; font-size: 22px; border-radius: 12px; }
  .pf-name { font-size: 14px; }
  .pf-en { font-size: 11px; }
  .pf-arrow { width: 32px; height: 32px; font-size: 12px; }

  .footer { padding: 32px 20px 20px; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 24px; }
  .foot-desc { font-size: 13px; }
  .foot-bottom { flex-direction: column; text-align: center; gap: 8px; }
}

@media (max-width: 480px) {
  .navbar { padding: 12px 16px; }
  .navbar.scrolled { padding: 10px 16px; }
  .nav-brand { gap: 8px; }
  .nav-brand .logo-img { width: 32px; height: 32px; border-radius: 9px; }
  .nav-brand > div > div:first-child { font-size: 14px; }

  section { padding: 56px 16px; }
  .hero { padding: 90px 16px 50px; }
  .hero-title { font-size: clamp(28px, 9vw, 38px); letter-spacing: -0.5px; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline {
    width: 100%; justify-content: center;
  }
  .hero-stats { gap: 20px; margin-top: 32px; }
  .stat-item .stat-num { font-size: 22px; }
  .stat-item .stat-label { font-size: 11px; }

  .section-title { font-size: 24px; }
  .section-tag { font-size: 12px; padding: 5px 14px; }

  .about-grid { gap: 28px; }
  .about-text h3 { font-size: 22px; }
  .about-card { padding: 20px; }
  .about-card h4 { font-size: 16px; }

  .adv-grid { grid-template-columns: 1fr; gap: 12px; }
  .adv-item { padding: 24px 20px; }
  .adv-num { font-size: 36px; }

  .svc-grid { gap: 14px; }
  .svc-card { padding: 24px 20px; }

  .contact-info h3 { font-size: 22px; }
  .contact-list { gap: 10px; }

  .float-card { padding: 20px; border-radius: 18px; }
  .pf-item { padding: 14px; }
  .pf-icon { width: 40px; height: 40px; font-size: 20px; }

  .footer { padding: 28px 16px 16px; }
  .foot-grid { gap: 24px; }
  .foot-col h5 { font-size: 14px; }
  .foot-col a { font-size: 13px; }
}

@keyframes navSlideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}