:root {
  /* 版心、间距：参考四川省人民政府网站等政务门户（常见 max-width:1200px + 16px 级正文） */
  --container-max: 1200px;
  --container-gutter: 15px;
  /* 更简洁、偏 Apple 风格的配色与光感 */
  --bg: #f5f5f7;
  --bg-alt: #f2f2f7;
  --card-bg: #ffffff;
  --border-subtle: rgba(15, 23, 42, 0.04);
  --accent: #0f62fe;
  --accent-soft: rgba(15, 98, 254, 0.06);
  --accent-strong: rgba(15, 98, 254, 0.18);
  --text-main: #111827;
  --text-soft: #4b5563;
  --text-mute: #6b7280;
  --text-on-accent: #ffffff;
  --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-pill: 999px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei',
    'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text-main);
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: 1.67;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  /* 去掉纹理，改为很柔和的顶部光感 */
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.9), transparent 55%);
  opacity: 1;
  pointer-events: none;
  z-index: -1;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-gutter);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #004a8f; /* 顶部保持稳重蓝色长条 */
  border-bottom: 3px solid #c9211e;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.16);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  height: auto;
  padding-top: 4px;
  padding-bottom: 4px;
}

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

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

.logo-text {
  font-weight: 700;
  font-size: 18px;
  color: #ffffff;
}

.logo-calligraphy {
  font-family: 'KaiTi', 'STKaiti', '楷体', 'SimKai', serif;
  font-size: 28px;
  font-weight: 700;
  color: #ffffff;
  margin-right: 8px;
  letter-spacing: 0.1em;
}

/* 顶栏/页脚统一文字商标；图形商标仅在首页首屏 hero 展示 */
.logo--wordmark {
  gap: 0;
}

.site-header .logo--wordmark .logo-text {
  font-size: 17px;
  font-weight: 650;
  letter-spacing: 0.02em;
  line-height: 1.25;
  color: #ffffff;
}

/* 页脚白底：与页头共用 .logo-text 时需深色字 */
.site-footer .logo .logo-text {
  color: var(--text-main);
}

.site-footer .logo--wordmark .logo-text {
  font-size: 17px;
  font-weight: 650;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.nav {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  flex-shrink: 1;
  min-width: 0;
}

.nav a {
  position: relative;
  font-size: 15px;
  color: #e5edf7;
  text-decoration: none;
  padding: 10px 10px;
  white-space: nowrap;
  transition:
    color 0.2s ease,
    background-color 0.2s ease;
  border-radius: 4px;
}

.nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: #ffffff;
  transition: width 0.25s ease-out;
}

.nav a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
}

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

/* New Version Button - AI Style */
.new-version-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 16px;
  margin-left: 12px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  text-decoration: none;
  background: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
  border-radius: 20px;
  transition: all 0.3s ease;
}

.new-version-btn:hover {
  box-shadow: 0 4px 15px rgba(0, 102, 255, 0.5);
  color: #ffffff;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px 0;
  z-index: 1002;
}

.mobile-menu-toggle span {
  width: 100%;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-20px);
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;
  z-index: 1000;
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -280px;
  width: 280px;
  height: 100vh;
  background: #ffffff;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
  transition: right 0.3s ease;
  z-index: 1001;
  padding: 80px 20px 20px;
  overflow-y: auto;
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu-link {
  display: block;
  padding: 14px 16px;
  color: #1f2933;
  text-decoration: none;
  font-size: 17px;
  border-radius: 8px;
  margin-bottom: 4px;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.mobile-menu-link:hover {
  background: #f2f6fb;
  color: #c9211e;
}

/* Hero */
.hero {
  position: relative;
  padding: 40px 0 40px;
  min-height: 320px;
  background: radial-gradient(circle at top left, #ffffff 0, #f5f5f7 45%, #f5f5f7 100%);
  border-bottom: 1px solid rgba(15, 23, 42, 0.04);
  overflow: hidden;
}

/* 顶部有轻微动感的渐变背景，类似院校门户大横幅 */
.hero::before {
  content: '';
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(circle at 20% 0%, rgba(255, 255, 255, 1), transparent 55%),
    radial-gradient(circle at 80% 10%, rgba(239, 246, 255, 1), transparent 55%);
  opacity: 0.9;
  z-index: 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.85fr) minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  position: relative;
  z-index: 1;
}

/* 首页 hero：商标与主标题同一纯白底条，与商标图白底一致 */
.hero-title-band {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  background: #ffffff;
  padding: 12px 18px 14px;
  border-radius: 12px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
  margin-bottom: 14px;
}

.hero-title-logo-wrap {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  line-height: 0;
}

.hero-title-logo {
  display: block;
  height: 48px;
  width: auto;
  max-width: min(200px, 42vw);
  object-fit: contain;
}

.hero-title-band .hero-title {
  margin: 0;
  flex: 1 1 220px;
  min-width: 0;
}

.brand-logo {
  max-width: 176px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.1);
  transition: transform 0.3s ease;
}

.brand-logo:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 16px rgba(15, 23, 42, 0.15);
}

.hero-content h1 {
  font-size: 30px;
  line-height: 1.25;
  margin: 0 0 12px;
  letter-spacing: 0.01em;
  color: #12395b;
}

.hero-content > .hero-title-band + p {
  margin-top: 0;
}

.opc-badge {
  display: inline-block;
  font-size: 15px;
  color: #1d4f91;
  font-weight: 500;
  vertical-align: middle;
  margin-left: 8px;
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 999px;
  border: 1px solid rgba(29, 79, 145, 0.2);
  box-shadow: 0 4px 12px rgba(29, 79, 145, 0.08);
  backdrop-filter: blur(8px);
}

.glass-card {
  background: rgba(255, 255, 255, 0.5) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.8) !important;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.05) !important;
}

.code-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.code-header .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.code-header .dot.red { background: #ff5f56; }
.code-header .dot.yellow { background: #ffbd2e; }
.code-header .dot.green { background: #27c93f; }

.code-title {
  margin-left: 8px;
  font-family: 'Fira Code', 'Consolas', 'Courier New', monospace;
  font-size: 14px;
  color: #52606d;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.opc-list {
  list-style: none !important;
  padding: 0 !important;
}

.opc-list li {
  padding-left: 0 !important;
  font-size: 15px !important;
  margin-bottom: 10px !important;
}

.opc-list li::before {
  display: none !important;
}

.opc-list li strong {
  color: #1d4f91;
  font-weight: 600;
}

.tech-tag {
  font-family: 'Fira Code', 'Consolas', 'Courier New', monospace;
  letter-spacing: 0.02em;
}

.hero-content p {
  margin: 0 0 16px;
  font-size: 15px;
  color: var(--text-soft);
  max-width: 100%;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition:
    transform 0.16s ease-out,
    box-shadow 0.16s ease-out,
    background 0.16s ease-out,
    border-color 0.16s ease-out,
    color 0.16s ease-out;
}

.btn-primary {
  background: var(--accent);
  color: var(--text-on-accent);
  box-shadow: 0 10px 24px var(--accent-strong);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 32px var(--accent-strong);
}

.btn-outline {
  border-color: rgba(148, 163, 184, 0.5);
  color: var(--text-main);
  background: #ffffff;
}

.btn-outline:hover {
  border-color: rgba(148, 163, 184, 0.9);
  background: #f9fafb;
}

.btn-full {
  width: 100%;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
}

.hero-tags span {
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: #ffffff;
  color: var(--text-soft);
}

.hero-card {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 16px 16px 14px;
  background: #f9fbff;
  border: 1px solid rgba(15, 23, 42, 0.04);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
}

.hero-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid transparent;
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero-card h2 {
  margin: 0 0 8px;
  font-size: 17px;
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
  color: var(--text-soft);
}

.hero-card li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
}

.hero-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: linear-gradient(to right, #22c55e, #4ade80);
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.18);
}

/* 渐变缓慢流动动画 */
@keyframes heroGradient {
  0% {
    transform: translate3d(-8%, -4%, 0) scale(1.05);
  }
  50% {
    transform: translate3d(6%, 4%, 0) scale(1.08);
  }
  100% {
    transform: translate3d(-4%, 6%, 0) scale(1.04);
  }
}

/* Scroll Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-on-scroll {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-on-scroll.fade-in-left {
  animation: fadeInLeft 0.6s ease forwards;
}

.animate-on-scroll.fade-in-right {
  animation: fadeInRight 0.6s ease forwards;
}

.animate-on-scroll.scale-in {
  animation: scaleIn 0.6s ease forwards;
}

.animate-on-scroll.visible {
  opacity: 1;
}

/* Sections */
.section {
  padding: 36px 0;
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid rgba(15, 23, 42, 0.04);
  border-bottom: 1px solid rgba(15, 23, 42, 0.04);
}

.trust-section {
  padding-top: 20px;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.trust-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 12px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 10px;
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
}

.trust-number {
  font-size: 22px;
  font-weight: 700;
  color: #12395b;
}

.trust-number--text {
  font-size: 17px;
  line-height: 1.35;
  font-weight: 700;
}

.trust-label {
  font-size: 14px;
  color: var(--text-soft);
}

/* 企业活动长条图片列表 */
.activities-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.activity-item {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  background: #ffffff;
  border-radius: 8px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
}

.activity-image img {
  display: block;
  width: 100%;
  border-radius: 8px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.activity-image img.loaded {
  opacity: 1;
}

.activity-image img.error {
  opacity: 0.6;
  background: #f3f4f6;
}

.activity-image {
  min-height: 200px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.activity-content h3 {
  margin: 0 0 6px;
  font-size: 18px;
  color: #111827;
}

.activity-content p {
  margin: 0 0 6px;
  font-size: 14px;
  color: var(--text-soft);
}

.activity-date {
  font-size: 13px;
  color: #6b7280;
}

.badge-card {
  min-height: 180px;
}

.card.badge-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.07);
  border-color: rgba(15, 23, 42, 0.1);
  background: #ffffff;
}

.case-card {
  min-height: 210px;
}

.case-tag {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  background: #e7effb;
  color: #1d4f91;
  font-size: 13px;
}

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.case-brand-logo {
  max-width: 150px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.1);
  transition: transform 0.3s ease;
}

.case-brand-logo:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.case-meta {

.text-link {
  color: #1d4f91;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}

.text-link:hover {
  color: #c9211e;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.partner-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 72px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 8px;
  font-size: 15px;
  color: #12395b;
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
}

/* 多层嵌合布局：左侧导航 + 右侧内容 */
.portal-layout {
  display: grid;
  grid-template-columns: 1.15fr 3.1fr;
  gap: 16px;
  align-items: flex-start;
}

.portal-sidebar {
  background: #ffffff;
  border-radius: 6px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
  padding: 10px 12px 12px;
}

.portal-sidebar h2 {
  margin: 0 0 8px;
  font-size: 17px;
  color: #12395b;
  padding-left: 9px;
  position: relative;
}

.portal-sidebar h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 3px;
  border-radius: 2px;
  background: #c9211e;
}

.portal-sidebar ul {
  list-style: none;
  margin: 0;
  padding: 4px 0 0;
}

.portal-sidebar li {
  margin-bottom: 4px;
}

.portal-sidebar a {
  display: block;
  padding: 7px 10px;
  border-radius: 4px;
  font-size: 15px;
  color: #1f2933;
  text-decoration: none;
}

.portal-sidebar li.active a,
.portal-sidebar a:hover {
  background: #f2f6fb;
  color: #c9211e;
}

.portal-content {
  background: #ffffff;
  border-radius: 8px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset, 0 10px 28px rgba(15, 23, 42, 0.05);
  padding: 20px 22px 24px;
  position: relative;
}

/* 门户主内容区：极轻顶部层次，避免花哨色块或卡通感底纹 */
.portal-content::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.75) 0%, rgba(255, 255, 255, 0) 38%);
}

.portal-content > * {
  position: relative;
  z-index: 1;
}

.portal-section {
  display: none;
}

.portal-section.active {
  display: block;
}

/* 门户式信息面板区域 */
.section-panel {
  padding-top: 22px;
  padding-bottom: 28px;
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.panel {
  background: #ffffff;
  border-radius: 6px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
  padding: 10px 12px 12px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  padding-bottom: 4px;
}

.panel-header h2 {
  margin: 0;
  font-size: 17px;
  color: #12395b;
  padding-left: 9px;
  position: relative;
}

.panel-header h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 3px;
  border-radius: 2px;
  background: #c9211e;
}

.panel-more {
  font-size: 12px;
  color: #52606d;
  text-decoration: none;
}

.panel-more:hover {
  color: #c9211e;
}

.panel-list {
  list-style: none;
  padding: 4px 0 0;
  margin: 0;
  font-size: 15px;
}

.panel-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 4px 0;
  border-bottom: 1px dotted rgba(15, 23, 42, 0.08);
}

.panel-list li:last-child {
  border-bottom: none;
}

.panel-list a {
  color: #1f2933;
  text-decoration: none;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.panel-list a:hover {
  color: #c9211e;
}

.panel-date {
  font-size: 12px;
  color: #7b8794;
  white-space: nowrap;
}

.panel-links .panel-header {
  margin-bottom: 8px;
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 4px;
}

.link-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 6px;
  border-radius: 4px;
  background: #f2f6fb;
  color: #12395b;
  font-size: 13px;
  text-decoration: none;
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.link-box:hover {
  background: #e5f0ff;
  border-color: #c9211e;
  color: #c9211e;
}

.section-header {
  text-align: left;
  margin-bottom: 24px;
}

.section-header h2 {
  margin: 0 0 8px;
  font-size: 20px;
  color: #12395b;
  position: relative;
  padding-left: 10px;
}

.section-header h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 3px;
  border-radius: 2px;
  background: #c9211e;
}

.section-header p {
  margin: 0;
  font-size: 13px;
  color: var(--text-soft);
}

.grid {
  display: grid;
  gap: 14px;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  border-radius: var(--radius-lg);
  padding: 14px 14px 12px;
  background: var(--card-bg);
  border: 1px solid rgba(15, 23, 42, 0.04);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
  transition:
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    background 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform, box-shadow, border-color, background;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
  border-color: rgba(15, 98, 254, 0.3);
  background: #ffffff;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 12px;
  border-radius: 12px;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  color: #0f62fe;
  transition:
    transform 0.3s ease,
    background 0.3s ease;
}

.card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
  background: linear-gradient(135deg, #0f62fe 0%, #0052d4 100%);
  color: #ffffff;
}

.card p {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--text-soft);
}

.card-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
  color: var(--text-mute);
}

.card-list li + li {
  margin-top: 4px;
}

/* 解决方案卡片：小号线框图标 + 弱悬停，避免通用卡片的蓝渐变与大浮动 */
.card.solution-card {
  border-color: rgba(15, 23, 42, 0.08);
  background: #ffffff;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
}

.card.solution-card .card-icon {
  width: 36px;
  height: 36px;
  margin-bottom: 10px;
  border-radius: 2px;
  background: #ffffff;
  background-image: none;
  border: 1px solid rgba(15, 23, 42, 0.09);
  color: #64748b;
}

.card.solution-card .card-icon svg {
  width: 20px;
  height: 20px;
}

.card.solution-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.07);
  border-color: rgba(15, 23, 42, 0.11);
  background: #ffffff;
}

.card.solution-card:hover .card-icon {
  transform: none;
  background: #f4f6f8;
  background-image: none;
  border-color: rgba(15, 23, 42, 0.12);
  color: #334155;
}

/* About */
.about {
  display: grid;
  grid-template-columns: minmax(0, 2.9fr) minmax(0, 2fr);
  gap: 28px;
  align-items: start;
}

.about-text h2 {
  margin: 0 0 12px;
  font-size: 21px;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: #0f172a;
}

.about-lead {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.7;
  color: #334155;
}

.about-lead strong {
  font-weight: 600;
  color: #1e293b;
}

/* 次要说明收进附注区，弱化「满屏灰字」感 */
.about-secondary {
  margin: 0;
  padding: 14px 16px 14px 18px;
  border-left: 3px solid rgba(18, 58, 91, 0.14);
  background: rgba(248, 250, 252, 0.85);
  border-radius: 0 6px 6px 0;
}

.about-secondary p {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.65;
  color: #64748b;
}

.about-secondary p:last-of-type {
  margin-bottom: 0;
}

.about-list {
  margin: 12px 0 0;
  padding-left: 16px;
  font-size: 12.5px;
  line-height: 1.55;
  color: #94a3b8;
}

.about-list li + li {
  margin-top: 6px;
}

.about-highlight {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 6px;
  background: #f8fafc;
  overflow: hidden;
}

.kpi {
  border-radius: 0;
  padding: 14px 16px;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(15, 23, 42, 0.07);
}

.kpi:last-child {
  border-bottom: none;
}

.kpi-number {
  display: block;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: #0f172a;
  font-variant-numeric: tabular-nums;
}

.kpi-label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.45;
  color: #64748b;
}

/* 门户内卡片：弱化图标渐变与旋转，更接近企业站气质 */
.portal-content .card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

.portal-content .card-icon {
  background: #eef2f6;
  color: #475569;
  border-radius: 8px;
}

.portal-content .card:hover .card-icon {
  transform: none;
  background: #e2e8f0;
  color: #1e293b;
}

/* 门户内解决方案卡：覆盖上一段 portal 通用卡规则（同权重时后写优先） */
.portal-content .card.solution-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  border-color: rgba(15, 23, 42, 0.1);
}

.portal-content .card.solution-card .card-icon {
  width: 36px;
  height: 36px;
  border-radius: 2px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.09);
  color: #64748b;
}

.portal-content .card.solution-card .card-icon svg {
  width: 20px;
  height: 20px;
}

.portal-content .card.solution-card:hover .card-icon {
  background: #f4f6f8;
  border-color: rgba(15, 23, 42, 0.12);
  color: #334155;
}

/* Contact */
.contact {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 2.8fr);
  gap: 24px;
  align-items: flex-start;
}

.contact-info h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.contact-info p {
  margin: 0 0 10px;
  font-size: 15px;
  color: var(--text-soft);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 10px;
  font-size: 15px;
  color: var(--text-mute);
}

.contact-list li + li {
  margin-top: 4px;
}

.contact-note {
  margin: 0;
  font-size: 14px;
  color: var(--text-soft);
}

.contact-form-wrapper {
  border-radius: 12px;
  padding: 16px 16px 14px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.08);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-row {
  display: flex;
  gap: 10px;
}

.form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 16px;
}

.form-group label {
  color: var(--text-soft);
}

.form-group input,
.form-group textarea {
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: #ffffff;
  color: var(--text-main);
  font-size: 15px;
  padding: 10px 12px;
  outline: none;
  transition:
    border-color 0.16s ease-out,
    box-shadow 0.16s ease-out,
    background 0.16s ease-out;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(148, 163, 184, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: rgba(29, 79, 145, 0.9);
  box-shadow: 0 0 0 1px rgba(29, 79, 145, 0.7), 0 0 0 6px rgba(29, 79, 145, 0.16);
  background: #ffffff;
}

.form-tip {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--text-soft);
}

/* Form Validation Styles */
.required {
  color: #ef4444;
  margin-left: 2px;
}

.error-message {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: #ef4444;
  min-height: 16px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.form-group input[aria-invalid="true"],
.form-group textarea[aria-invalid="true"] {
  border-color: #ef4444;
  background: #fef2f2;
}

.form-group input[aria-invalid="true"]:focus,
.form-group textarea[aria-invalid="true"]:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 1px #ef4444, 0 0 0 6px rgba(239, 68, 68, 0.16);
}

.form-group input[aria-invalid="false"],
.form-group textarea[aria-invalid="false"] {
  border-color: rgba(148, 163, 184, 0.4);
}

.form-group input[aria-invalid="false"]:focus,
.form-group textarea[aria-invalid="false"]:focus {
  border-color: rgba(29, 79, 145, 0.9);
  box-shadow: 0 0 0 1px rgba(29, 79, 145, 0.7), 0 0 0 6px rgba(29, 79, 145, 0.16);
}

.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
  background: #f0fdf4;
  border: 2px solid #22c55e;
  border-radius: 12px;
  animation: fadeIn 0.5s ease;
}

.form-success svg {
  color: #22c55e;
  margin-bottom: 16px;
  animation: scaleIn 0.5s ease;
}

.form-success h3 {
  color: #166534;
  margin: 0 0 8px;
  font-size: 24px;
}

.form-success p {
  color: #15803d;
  margin: 0;
  font-size: 16px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes scaleIn {
  from {
    transform: scale(0);
  }
  to {
    transform: scale(1);
  }
}

/* Loading State */
.btn.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin-top: -10px;
  margin-left: -10px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.page-hero {
  padding: 44px 0 28px;
  background: linear-gradient(180deg, #f4f5f7 0%, #ffffff 100%);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.page-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 1.2fr);
  gap: 22px;
  align-items: center;
}

/* 无右侧信息栏时占满宽，避免双列网格右侧留白 */
.page-hero-inner:not(:has(.page-hero-side)) {
  grid-template-columns: minmax(0, 1fr);
}

.page-hero h1 {
  margin: 0 0 10px;
  font-size: 28px;
  color: #12395b;
}

.page-hero p {
  margin: 0;
  font-size: 15px;
  color: var(--text-soft);
}

.page-hero-side {
  padding: 16px;
  background: #ffffff;
  border-radius: 8px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.page-hero-side h2 {
  margin: 0 0 8px;
  font-size: 18px;
  color: #12395b;
}

.page-hero-side ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-soft);
}

.page-section {
  padding: 34px 0;
}

.page-split {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.quote-box,
.info-box {
  padding: 16px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 10px;
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
}

.quote-box p,
.info-box p,
.info-box li {
  font-size: 15px;
  color: var(--text-soft);
}

.info-box h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: #12395b;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.timeline-item:last-child {
  border-bottom: none;
}

.timeline-year {
  font-size: 20px;
  font-weight: 700;
  color: #1d4f91;
}

.timeline-content h3,
.news-card h3 {
  margin: 0 0 8px;
  font-size: 22px;
  color: #12395b;
}

.timeline-content p,
.news-card p {
  margin: 0;
  font-size: 16px;
  color: var(--text-soft);
}

.news-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 24px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.news-card {
  padding: 20px;
  background: #ffffff;
  border-radius: 10px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
}

.news-meta {
  margin-bottom: 8px;
  font-size: 14px;
  color: #6b7280;
}

.service-feature-list,
.contact-panel-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.service-feature-list li,
.contact-panel-list li {
  padding: 8px 0;
  border-bottom: 1px dashed rgba(15, 23, 42, 0.08);
  font-size: 14px;
  color: var(--text-soft);
}

.service-feature-list li:last-child,
.contact-panel-list li:last-child {
  border-bottom: none;
}

/* Footer */
.site-footer {
  padding: 14px 0 20px;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  background: #ffffff;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-legal a {
  white-space: nowrap;
}

.footer-copy {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--text-soft);
}

.footer-meta {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--text-soft);
}

.footer-meta a {
  color: #1d4f91;
  text-decoration: none;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
}

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

.footer-links a:hover {
  color: var(--text-main);
}

/* Responsive */
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1.2fr);
  }

  .hero-card {
    order: -1;
  }

  .about,
  .contact {
    grid-template-columns: minmax(0, 1fr);
  }

  .panel-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .trust-grid,
  .partners-grid,
  .grid-4,
  .news-layout,
  .page-hero-inner,
  .page-split {
    grid-template-columns: minmax(0, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--text-on-accent);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(15, 98, 254, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease,
    transform 0.3s ease,
    box-shadow 0.3s ease;
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: #0b52d4;
  box-shadow: 0 6px 16px rgba(15, 98, 254, 0.4);
  transform: translateY(-2px);
}

.back-to-top:active {
  transform: translateY(0);
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    height: auto;
    padding: 10px 0 12px;
  }

  .nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
    position: absolute;
    right: var(--container-gutter);
    top: 50%;
    transform: translateY(-50%);
  }

  .hero {
    padding-top: 28px;
    min-height: 0;
  }

  .hero-content h1 {
    font-size: 22px;
  }

  .section {
    padding: 28px 0;
  }

  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }

  .trust-grid,
  .partners-grid,
  .grid-4 {
    grid-template-columns: minmax(0, 1fr);
  }

  .activity-item,
  .timeline-item {
    grid-template-columns: minmax(0, 1fr);
  }

  .form-row {
    flex-direction: column;
  }

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