/* ============================================
   全局变量与基础重置
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #165DFF;
  --primary-light: #4080ff;
  --primary-glow: rgba(22, 93, 255, 0.4);
  --dark: #050816;
  --dark-2: #0a0f1f;
  --dark-card: rgba(20, 30, 58, 0.6);
  --dark-card-border: rgba(64, 128, 255, 0.18);
  --text-white: #f0f4ff;
  --text-gray: #a0b4d8;
  --text-muted: #6b7fa8;
  --transition-all: all 0.35s cubic-bezier(0.4,0,0.2,1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--dark);
  color: var(--text-gray);
  line-height: 1.7;
  overflow-x: hidden;
  cursor: default;
}

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

ul {
  list-style: none;
}

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

.container {
  width: 92%;
  max-width: 1320px;
  margin: 0 auto;
}

.gradient-text {
  background: linear-gradient(90deg, #4080ff, #66ccff, #99e0ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 100%;
  animation: gradientMove 4s ease-in-out infinite;
}

@keyframes gradientMove {
  0%,100% {background-position: 0% 50%;}
  50% {background-position: 100% 50%;}
}

/* 鼠标跟随光晕 */
.cursor-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22,93,255,0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
}

/* ============================================
   通用按钮样式
   ============================================ */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 99px;
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition-all);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 6px 20px rgba(22, 93, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(22, 93, 255, 0.45);
}

.btn-ghost {
  border: 1px solid rgba(64, 128, 255, 0.4);
  color: var(--text-white);
  background: rgba(22, 93, 255, 0.05);
}

.btn-ghost:hover {
  border-color: var(--primary);
  background: rgba(22, 93, 255, 0.12);
  transform: translateY(-3px);
  box-shadow: 0 0 20px rgba(22, 93, 255, 0.2);
}

.btn-large {
  padding: 16px 40px;
  font-size: 16px;
}

.btn-small {
  padding: 8px 20px;
  border: 1px solid var(--primary);
  border-radius: 99px;
  color: var(--primary-light) !important;
  font-size: 14px;
  transition: var(--transition-all);
}

.btn-small:hover {
  background: var(--primary);
  color: #fff !important;
  box-shadow: 0 0 20px var(--primary-glow);
}

/* ============================================
   导航栏 + Logo
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  padding: 16px 0;
  transition: var(--transition-all);
}

.header.scrolled {
  background: rgba(5, 8, 22, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 30px rgba(22, 93, 255, 0.1);
  padding: 10px 0;
  border-bottom: 1px solid rgba(64, 128, 255, 0.08);
}

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

/* Logo组合样式 */
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-white);
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #66ccff);
  display: grid;
  place-items: center;
  box-shadow: 0 4px 14px rgba(22, 93, 255, 0.4);
  position: relative;
  overflow: hidden;
}

.logo-mark::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: logoShine 3s ease-in-out infinite;
}

@keyframes logoShine {
  0%, 70% {left: -100%;}
  100% {left: 100%;}
}

.logo-angle {
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  position: relative;
  z-index: 1;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo .brand-en {
  font-weight: 700;
  letter-spacing: 0.5px;
  font-size: 20px;
}

.logo .brand-cn {
  font-size: 12px;
  color: var(--text-gray);
  font-weight: 400;
  letter-spacing: 1px;
}

/* 导航菜单 */
.menu {
  display: flex;
  gap: 32px;
  align-items: center;
}

.menu a {
  color: var(--text-gray);
  font-size: 14px;
  position: relative;
  transition: var(--transition-all);
}

.menu a:hover,
.menu a.active {
  color: var(--text-white);
}

.menu a.active::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), #66ccff);
  border-radius: 2px;
}

.mobile-toggle {
  display: none;
  font-size: 26px;
  color: #fff;
  cursor: pointer;
  z-index: 1000;
}

/* ============================================
   首页 Hero 首屏
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 100px;
  overflow: hidden;
}

#heroCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.7;
}

.hero-bg-decoration,
.hero-bg-decoration-2 {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 0;
}

.hero-bg-decoration {
  top: -10%;
  right: -5%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(22,93,255,0.2) 0%, transparent 65%);
  animation: floatBg 8s ease-in-out infinite;
}

.hero-bg-decoration-2 {
  bottom: 10%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(102,204,255,0.12) 0%, transparent 65%);
  animation: floatBg 10s ease-in-out infinite reverse;
}

@keyframes floatBg {
  0%,100% {transform: translate(0,0);}
  50% {transform: translate(30px, -30px);}
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
  flex: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 18px;
  background: rgba(22, 93, 255, 0.12);
  border: 1px solid rgba(64, 128, 255, 0.2);
  border-radius: 99px;
  color: var(--primary-light);
  font-size: 14px;
  margin-bottom: 26px;
}

.eyebrow span {
  width: 28px;
  height: 1px;
  background: var(--primary-light);
}

.hero-content h1 {
  font-size: 52px;
  color: var(--text-white);
  line-height: 1.25;
  margin-bottom: 24px;
  font-weight: 700;
}

.hero-desc {
  font-size: 17px;
  margin-bottom: 36px;
  max-width: 600px;
  color: var(--text-gray);
}

.actions {
  display: flex;
  gap: 20px;
  margin-bottom: 42px;
}

.trust-badges {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-white);
  padding: 6px 14px;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.06);
}

.badge i {
  color: #4ade80;
  font-style: normal;
  font-size: 12px;
}

/* Hero右侧3D卡片 - 放大优化版 */
.hero-3d-card {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 520px;
  margin: 0 auto;
  perspective: 1000px;
}

.card-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(64, 128, 255, 0.3);
  animation: ringRotate 12s linear infinite;
}

.ring-1 {
  width: 90%;
  height: 90%;
  border-style: dashed;
}

.ring-2 {
  width: 70%;
  height: 70%;
  animation-direction: reverse;
  animation-duration: 8s;
}

@keyframes ringRotate {
  from {transform: translate(-50%, -50%) rotate(0deg);}
  to {transform: translate(-50%, -50%) rotate(360deg);}
}

.card-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72%;
  height: 72%;
  background: linear-gradient(135deg, rgba(22,93,255,0.2), rgba(102,204,255,0.1));
  border: 1px solid rgba(64, 128, 255, 0.3);
  border-radius: 28px;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  box-shadow: 0 0 50px rgba(22, 93, 255, 0.25);
  animation: coreFloat 6s ease-in-out infinite;
}

@keyframes coreFloat {
  0%,100% {transform: translate(-50%, -50%) translateY(0);}
  50% {transform: translate(-50%, -50%) translateY(-12px);}
}

.card-core h3 {
  color: #fff;
  font-size: 26px;
  margin-bottom: 18px;
}

.card-core ul {
  color: var(--text-gray);
  font-size: 15px;
  line-height: 2.2;
}

/* 首屏数据条 */
.hero-stats {
  position: relative;
  z-index: 2;
  padding: 30px 0;
  border-top: 1px solid rgba(64, 128, 255, 0.08);
  border-bottom: 1px solid rgba(64, 128, 255, 0.08);
  background: rgba(10, 15, 31, 0.4);
  backdrop-filter: blur(8px);
  margin-top: 40px;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.mini-stat strong {
  display: block;
  font-size: 36px;
  color: #fff;
  font-weight: 700;
  background: linear-gradient(90deg, #4080ff, #88c0ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.mini-stat span {
  font-size: 14px;
  color: var(--text-gray);
}

/* ============================================
   通用区块样式
   ============================================ */
.section {
  padding: 120px 0;
  position: relative;
  z-index: 2;
}

.section.soft {
  background: linear-gradient(180deg, rgba(16, 24, 48, 0.3) 0%, rgba(8, 14, 30, 0.5) 100%);
  border-top: 1px solid rgba(64, 128, 255, 0.06);
  border-bottom: 1px solid rgba(64, 128, 255, 0.06);
}

.section-title {
  text-align: center;
  margin-bottom: 70px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(22, 93, 255, 0.1);
  color: var(--primary-light);
  border-radius: 99px;
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 18px;
}

.section-title h2 {
  font-size: 38px;
  color: var(--text-white);
  margin-bottom: 16px;
  font-weight: 700;
}

.section-title p {
  max-width: 720px;
  margin: 0 auto;
  font-size: 16px;
  color: var(--text-muted);
}

/* ============================================
   首页子页面导航卡片
   ============================================ */
.page-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.page-card {
  display: block;
  background: var(--dark-card);
  border: 1px solid var(--dark-card-border);
  border-radius: 18px;
  padding: 32px 28px;
  transition: var(--transition-all);
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.page-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-light);
  box-shadow: 0 16px 40px rgba(22, 93, 255, 0.18);
}

.page-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 20px;
  display: grid;
  place-items: center;
  background: rgba(22, 93, 255, 0.12);
  border-radius: 12px;
  transition: var(--transition-all);
}

.page-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--primary-light);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-card:hover .page-icon {
  background: linear-gradient(135deg, rgba(22, 93, 255, 0.25), rgba(102, 204, 255, 0.15));
  box-shadow: 0 0 20px rgba(22, 93, 255, 0.25);
}

.page-card h3 {
  color: var(--text-white);
  font-size: 20px;
  margin-bottom: 12px;
}

.page-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.page-link {
  font-size: 14px;
  color: var(--primary-light);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-all);
}

.page-card:hover .page-link {
  gap: 10px;
}

/* ============================================
   三大核心业务卡片
   ============================================ */
.business-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 30px;
}

.business-card {
  position: relative;
  background: var(--dark-card);
  border: 1px solid var(--dark-card-border);
  border-radius: 20px;
  padding: 40px 32px;
  transition: var(--transition-all);
  overflow: hidden;
  transform-style: preserve-3d;
}

.business-card:hover {
  border-color: rgba(64, 128, 255, 0.4);
  box-shadow: 0 20px 50px rgba(22, 93, 255, 0.15);
  transform: translateY(-8px);
}

.card-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(22,93,255,0.08) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}

.business-card:hover .card-glow {
  opacity: 1;
}

.biz-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(22,93,255,0.2), rgba(102,204,255,0.1));
  border-radius: 16px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  border: 1px solid rgba(64, 128, 255, 0.2);
}

.biz-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--primary-light);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.biz-content h3 {
  color: #fff;
  font-size: 24px;
  margin-bottom: 12px;
}

.biz-desc {
  color: var(--text-gray);
  margin-bottom: 24px;
  font-size: 15px;
}

.biz-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.biz-list li {
  font-size: 14px;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
}

.biz-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-light);
}

.biz-sub-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.biz-sub-item {
  padding-left: 16px;
  border-left: 2px solid rgba(64, 128, 255, 0.3);
}

.biz-sub-item h5 {
  color: var(--text-white);
  font-size: 15px;
  margin-bottom: 4px;
  font-weight: 600;
}

.biz-sub-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================
   技术实力卡片
   ============================================ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.tech-card {
  padding: 36px 30px;
  background: var(--dark-card);
  border: 1px solid var(--dark-card-border);
  border-radius: 18px;
  transition: var(--transition-all);
  position: relative;
}

.tech-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-light);
  box-shadow: 0 12px 30px rgba(22, 93, 255, 0.15);
}

.tech-num {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), #66ccff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 16px;
  opacity: 0.8;
}

.tech-card h3 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 12px;
}

.tech-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

/* ============================================
   时间轴流程样式
   ============================================ */
.flow-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

.flow-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), rgba(22,93,255,0.1));
  opacity: 0.4;
}

.flow-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 80px 1fr;
  align-items: start;
  margin-bottom: 50px;
}

.flow-item:last-child {
  margin-bottom: 0;
}

.flow-dot {
  grid-column: 2 / 3;
  justify-self: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  position: relative;
  z-index: 2;
  box-shadow: 0 0 20px var(--primary-glow);
  margin-top: 28px;
}

.flow-content {
  padding: 24px 28px;
  background: var(--dark-card);
  border: 1px solid var(--dark-card-border);
  border-radius: 16px;
  transition: var(--transition-all);
}

.flow-item:nth-child(odd) .flow-content {
  grid-column: 1 / 2;
  text-align: right;
}

.flow-item:nth-child(even) .flow-content {
  grid-column: 3 / 4;
  text-align: left;
}

.flow-content:hover {
  border-color: rgba(64, 128, 255, 0.4);
  box-shadow: 0 10px 30px rgba(22, 93, 255, 0.12);
  transform: translateY(-4px);
}

.flow-step {
  display: inline-block;
  font-size: 13px;
  color: var(--primary-light);
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.flow-content h3 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 8px;
}

.flow-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============================================
   三级质检横幅
   ============================================ */
.quality-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 30px;
  background: linear-gradient(135deg, rgba(22,93,255,0.1), rgba(102,204,255,0.05));
  border: 1px solid rgba(64, 128, 255, 0.2);
  border-radius: 16px;
  flex-wrap: wrap;
}

.quality-item {
  text-align: center;
  padding: 10px 20px;
}

.quality-item strong {
  display: block;
  color: #fff;
  font-size: 18px;
  margin-bottom: 4px;
}

.quality-item span {
  font-size: 13px;
  color: var(--text-muted);
}

.quality-arrow {
  color: var(--primary-light);
  font-size: 20px;
  opacity: 0.6;
}

.quality-result {
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--primary), #66ccff);
  border-radius: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 4px 16px rgba(22, 93, 255, 0.4);
}

/* ============================================
   行业解决方案卡片
   ============================================ */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.industry-card {
  padding: 36px 28px;
  background: var(--dark-card);
  border: 1px solid var(--dark-card-border);
  border-radius: 16px;
  text-align: center;
  transition: var(--transition-all);
}

.industry-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-light);
  background: rgba(22, 93, 255, 0.08);
  box-shadow: 0 10px 30px rgba(22, 93, 255, 0.15);
}

.ind-icon {
  margin-bottom: 20px;
  transition: transform 0.4s;
  display: flex;
  justify-content: center;
}

.ind-icon svg {
  width: 52px;
  height: 52px;
  stroke: var(--primary-light);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.industry-card:hover .ind-icon {
  transform: scale(1.15);
}

.industry-card h4 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 10px;
}

.industry-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============================================
   平台优势卡片
   ============================================ */
.platform-advantages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.adv-card {
  padding: 32px 28px;
  background: var(--dark-card);
  border: 1px solid var(--dark-card-border);
  border-radius: 16px;
  transition: var(--transition-all);
}

.adv-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-light);
  box-shadow: 0 10px 30px rgba(22, 93, 255, 0.15);
}

.adv-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 20px;
  display: grid;
  place-items: center;
  background: rgba(22, 93, 255, 0.12);
  border-radius: 12px;
}

.adv-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--primary-light);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.adv-card h4 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 10px;
}

.adv-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============================================
   平台功能模块
   ============================================ */
.platform-modules {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.module-card {
  padding: 32px 28px;
  background: var(--dark-card);
  border: 1px solid var(--dark-card-border);
  border-radius: 16px;
  transition: var(--transition-all);
  transform-style: preserve-3d;
}

.module-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-light);
  box-shadow: 0 10px 30px rgba(22, 93, 255, 0.15);
}

.module-card h3 {
  color: #fff;
  font-size: 19px;
  margin-bottom: 12px;
}

.module-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============================================
   国产化适配
   ============================================ */
.domestic-adapt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 40px;
  background: linear-gradient(135deg, rgba(22,93,255,0.1), rgba(102,204,255,0.05));
  border: 1px solid rgba(64, 128, 255, 0.2);
  border-radius: 18px;
  flex-wrap: wrap;
}

.domestic-title h4 {
  color: #fff;
  font-size: 22px;
  margin-bottom: 8px;
}

.domestic-title p {
  font-size: 14px;
  color: var(--text-muted);
}

.domestic-list {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.domestic-item {
  padding: 10px 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(64, 128, 255, 0.2);
  border-radius: 8px;
  color: var(--text-white);
  font-size: 14px;
}

/* ============================================
   三大服务承诺
   ============================================ */
.promise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.promise-card {
  text-align: center;
  padding: 40px 30px;
  background: var(--dark-card);
  border: 1px solid var(--dark-card-border);
  border-radius: 20px;
  transition: var(--transition-all);
}

.promise-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-light);
  box-shadow: 0 16px 40px rgba(22, 93, 255, 0.2);
}

.promise-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(22,93,255,0.2), rgba(102,204,255,0.1));
  display: grid;
  place-items: center;
  border: 1px solid rgba(64, 128, 255, 0.3);
}

.promise-icon svg {
  width: 34px;
  height: 34px;
  stroke: var(--primary-light);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.promise-card h3 {
  color: #fff;
  font-size: 22px;
  margin-bottom: 14px;
}

.promise-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

/* ============================================
   关于我们板块
   ============================================ */
.about-wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}

.about-content h2 {
  font-size: 36px;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 24px;
}

.about-desc {
  color: var(--text-gray);
  margin-bottom: 16px;
  font-size: 16px;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid rgba(64, 128, 255, 0.15);
}

.about-stat strong {
  display: block;
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(90deg, var(--primary), #66ccff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 4px;
}

.about-stat span {
  font-size: 14px;
  color: var(--text-muted);
}

.about-visual {
  display: flex;
  justify-content: center;
}

.glow-box {
  position: relative;
  width: 360px;
  height: 360px;
  display: grid;
  place-items: center;
}

.glow-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--primary), #66ccff, var(--primary));
  animation: spin 8s linear infinite;
  filter: blur(30px);
  opacity: 0.4;
}

@keyframes spin {
  from {transform: rotate(0deg);}
  to {transform: rotate(360deg);}
}

.glow-inner {
  position: relative;
  width: 75%;
  height: 75%;
  background: var(--dark-2);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  border: 1px solid rgba(64, 128, 255, 0.3);
}

.glow-inner h3 {
  color: #fff;
  font-size: 22px;
  margin-bottom: 16px;
}

.glow-inner p {
  color: var(--text-gray);
  font-size: 16px;
  line-height: 1.8;
}

/* ============================================
   CTA 区块
   ============================================ */
.cta {
  background: linear-gradient(135deg, rgba(22,93,255,0.18), rgba(12,36,90,0.08));
  border: 1px solid rgba(22, 93, 255, 0.25);
  border-radius: 28px;
  padding: 70px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(22,93,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}

.cta h2 {
  font-size: 34px;
  color: #fff;
  margin-bottom: 14px;
  position: relative;
}

.cta p {
  max-width: 600px;
  position: relative;
  color: var(--text-gray);
}

/* ============================================
   子页面基础样式
   ============================================ */
.sub-page-main {
  padding-top: 80px;
}

.sub-hero {
  position: relative;
  padding: 100px 0 60px;
  text-align: center;
  overflow: hidden;
}

.sub-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(22, 93, 255, 0.18) 0%, transparent 60%);
  pointer-events: none;
}

.sub-hero-content {
  position: relative;
  z-index: 2;
}

.sub-hero-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(22, 93, 255, 0.1);
  color: var(--primary-light);
  border-radius: 99px;
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 18px;
}

.sub-hero h1 {
  font-size: 42px;
  color: var(--text-white);
  margin-bottom: 16px;
  font-weight: 700;
}

.sub-hero p {
  max-width: 720px;
  margin: 0 auto;
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================
   联系页面专属样式
   ============================================ */
.contact-info {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(64, 128, 255, 0.15);
  text-align: left;
}

.contact-info p {
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.6;
}

.contact-info strong {
  color: var(--text-white);
  font-weight: 600;
}

.contact-info .highlight {
  color: var(--primary-light);
  font-weight: 500;
}

.contact-info .muted {
  color: var(--text-muted);
  font-size: 13px;
}

/* 横向合作流程 */
.process-steps {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-top: 60px;
  flex-wrap: wrap;
}

.process-step {
  flex: 1;
  min-width: 160px;
  text-align: center;
}

.step-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #66ccff);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 14px rgba(22, 93, 255, 0.4);
}

.process-step h4 {
  color: var(--text-white);
  font-size: 17px;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.step-line {
  flex: 0 0 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), rgba(64,128,255,0.2));
  margin-top: 27px;
  min-width: 20px;
}

/* ============================================
   页脚样式
   ============================================ */
.footer {
  background: #030612;
  padding: 80px 0 30px;
  margin-top: 40px;
  border-top: 1px solid rgba(64, 128, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 60px;
}

.footer .brand-block {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.footer-logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 8px;
}

.footer-logo-mark .logo-angle {
  font-size: 14px;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.footer .brand-name {
  color: #fff;
  font-size: 17px;
  font-weight: 600;
}

.brand-slogan {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.footer-contact {
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 2;
}

.footer h4 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 22px;
}

.footer li {
  margin-bottom: 12px;
}

.footer li a {
  color: var(--text-gray);
  transition: var(--transition-all);
  font-size: 14px;
}

.footer li a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.copyright {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
}

/* ============================================
   滚动入场动画
   ============================================ */
.animate-fade-up,
.animate-fade-left,
.animate-fade-right {
  opacity: 0;
  transition: all 0.8s cubic-bezier(0.4,0,0.2,1);
}

.animate-fade-up {
  transform: translateY(50px);
}

.animate-fade-left {
  transform: translateX(-60px);
}

.animate-fade-right {
  transform: translateX(60px);
}

.animate-fade-up.show,
.animate-fade-left.show,
.animate-fade-right.show {
  opacity: 1;
  transform: translate(0, 0);
}

/* ============================================
   响应式适配
   ============================================ */
@media (max-width: 1200px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 60px;
  }
  .hero-3d-card {
    max-width: 420px;
  }
  .hero-desc, .trust-badges, .actions {
    margin-left: auto;
    margin-right: auto;
    justify-content: center;
  }
  .page-grid,
  .tech-grid,
  .platform-advantages,
  .platform-modules,
  .promise-grid,
  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-wrap {
    grid-template-columns: 1fr;
    gap: 60px;
    text-align: center;
  }
  .about-stats {
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .step-line {
    display: none;
  }
  .process-step {
    flex: 0 0 calc(33.33% - 20px);
    margin-bottom: 30px;
  }
}

@media (max-width: 900px) {
  .menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(5,8,22,0.96);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 40px 0;
    gap: 28px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
    border-bottom: 1px solid rgba(64, 128, 255, 0.1);
    max-height: 80vh;
    overflow-y: auto;
  }
  .menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .mobile-toggle {
    display: block;
  }
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  /* 移动端时间轴改为单侧 */
  .flow-timeline::before {
    left: 20px;
    transform: none;
  }
  .flow-item {
    grid-template-columns: 60px 1fr;
  }
  .flow-dot {
    grid-column: 1 / 2;
    justify-self: center;
    margin-top: 28px;
  }
  .flow-item:nth-child(odd) .flow-content,
  .flow-item:nth-child(even) .flow-content {
    grid-column: 2 / 3;
    text-align: left;
  }
}

@media (max-width: 600px) {
  .hero-content h1 {
    font-size: 32px;
  }
  .section-title h2 {
    font-size: 28px;
  }
  .sub-hero h1 {
    font-size: 32px;
  }
  .cta {
    padding: 40px 30px;
    text-align: center;
    justify-content: center;
  }
  .actions {
    flex-direction: column;
    align-items: center;
  }
  .page-grid,
  .tech-grid,
  .platform-advantages,
  .platform-modules,
  .promise-grid,
  .industry-grid,
  .business-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .glow-box {
    width: 280px;
    height: 280px;
  }
  .quality-banner {
    flex-direction: column;
    gap: 10px;
  }
  .quality-arrow {
    transform: rotate(90deg);
  }
  .about-stats {
    flex-direction: column;
    gap: 20px;
    align-items: center;
  }
  .domestic-adapt {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }
  .domestic-list {
    justify-content: center;
  }
  .process-step {
    flex: 0 0 100%;
  }
}