:root {
  --color-dark-blue: #0b1220;
  --color-primary-blue: #2563eb;
  --color-white: #ffffff;

  --bg-light-gray: #f8fafc;
  --bg-pure-white: #ffffff;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--color-dark-blue);
  color: var(--color-white);
}

a {
  text-decoration: none;
}

a:focus {
  color: inherit!important;
  text-decoration: inherit;;
}

.spt {
  padding-top: 90px;
}

.spb {
  padding-bottom: 90px;
}

.sptb {
  padding: 90px 0;
}

.text-color-highlight {
  color: var(--color-primary-blue);
}

.font-weight-300 {
  font-weight: 300;
}

.font-weight-400 {
  font-weight: 400;
}

.font-weight-500 {
  font-weight: 500;
}

.font-weight-600 {
  font-weight: 600;
}

.font-weight-700 {
  font-weight: 700;
}

/* 悬浮导航栏 */
.navbar-fixed-top {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  background-color: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
  padding: 10px 0;
}

.navbar-fixed-top.scrolled {
  background-color: var(--color-dark-blue);
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
}

.navbar-brand .logo-box {
  width: 36px;
}

.nav-link {
  color: rgba(255, 255, 255, 0.75);
}

.nav-link:hover {
  color: var(--color-white);
}

/* Hero首屏区域 */
.hero-section {
  min-height: 100vh;
  padding-top: 80px;
  background-color: var(--color-dark-blue);
  /* ========== 此处替换hero背景大图 ========== */
  background-image: url("../images/hero-bg.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  display: flex;
  align-items: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(11, 18, 32, 0.65);
}

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

.tagline-small {
  font-size: 1rem;
  letter-spacing: 1px;
  color: var(--color-primary-blue);
}

.hero-main-title {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 700;
  margin: 12px 0;
}

.hero-sub-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 16px;
}

.text-highlight {
  color: var(--color-primary-blue);
}

.hero-desc {
  font-size: 1.05rem;
  opacity: 0.9;
  margin-bottom: 32px;
}

.btn-primary-custom {
  background-color: var(--color-primary-blue);
  color: var(--color-white);
  border: none;
  padding: 12px 26px;
  border-radius: 4px;
}

.btn-primary-custom:hover {
  background-color: #1d4ed8;
  color: var(--color-white);
}

.btn-outline-custom {
  background-color: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 12px 26px;
  border-radius: 4px;
}

.btn-outline-custom:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  border-color: var(--color-white);
}

.feature-list-item {
  font-size: 1.1rem;
  margin: 10px 0;
  text-align: left;
}

.feature-list-item i {
  color: var(--color-primary-blue);
  margin-right: 8px;
}

/* 二维码弹窗模态框 */
.qrcode-modal {
  display: none;
  position: fixed;
  z-index: 1050;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.75);
  align-items: center;
  justify-content: center;
}

.qrcode-card {
  background-color: var(--color-dark-blue);
  padding: 30px;
  border-radius: 10px;
  position: relative;
  max-width: 360px;
  width: 90%;
  text-align: center;
}

.close-qrcode-btn {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 22px;
  color: #fff;
  cursor: pointer;
}

.qrcode-img-wrap {
  margin: 20px 0;
}

/* ========== 此处替换二维码图片 ========== */
.qrcode-img-wrap img {
  width: 200px;
  height: 200px;
  object-fit: contain;
}

/* 返回顶部按钮 */
.back-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background-color: var(--color-primary-blue);
  color: var(--color-white);
  border: none;
  border-radius: 4px;
  z-index: 900;
  display: none;
}

.back-top-btn:hover {
  background-color: #1d4ed8;
}

@media(max-width:768px) {
  .hero-section {
    text-align: center;
  }
}



/* ========== GEO介绍板块 开始 ========== */

.section-geo-intro {
  background-color: var(--bg-pure-white);
  color: #0b1220;
}

.geo-sub-heading {
  font-size: 0.95rem;
  letter-spacing: 1px;
  color: #2563eb;
  font-weight: 500;
}

.geo-main-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.3;
}

.text-primary-blue {
  color: #2563eb;
}

.geo-p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #1e293b;
}

.geo-card-wrap {
  background-color: rgba(37, 99, 235, 0.06);
  border-radius: 6px;
  padding: 2rem;
}

.geo-card-title {
  font-weight: 500;
  font-size: 1.05rem;
}

.geo-item-num {
  font-size: 0.9rem;
  color: #2563eb;
  font-weight: 600;
  margin-bottom: 8px;
}

.geo-item-text {
  font-size: 1rem;
  line-height: 1.6;
  color: #0f172a;
}

.geo-footer-text p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #1e293b;
}

.geo-quote-block {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.2;
}

.quote-line {
  display: block;
  width: 3px;
  height: 24px;
  background: #2563eb;
  flex-shrink: 0;
  /* margin-top: 4px; */
}

@media(max-width:768px) {
  .geo-card-wrap {
    padding: 1.25rem;
  }
}

/* ========== GEO介绍板块 结束 ========== */



/*=====通用 section-header 公共标题样式，后续所有板块都可以复用这个class=====*/
.section-header .section-sub-heading {
  font-size: 0.95rem;
  letter-spacing: 1px;
  color: var(--color-primary-blue);
  font-weight: 500;
  text-transform: uppercase;
}

.section-header .section-main-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
}

.section-header .section-desc {
  font-size: 0.98rem;
  color: #475569;
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.65;
}



/* ========== 核心优势板块 开始 ========== */

.section-core-advantage {
  background-color: var(--bg-light-gray);
  color: #0b1220;
}

.adv-item-wrap {
  display: flex;
  gap: 16px;
  padding: 32px 0;
  border-bottom: 1px solid #e2e8f0;
}

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

.adv-index {
  color: var(--color-primary-blue);
  font-weight: 600;
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 4px;
}

.adv-content {
  flex: 1;
}

.adv-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.adv-subtitle {
  font-size: 0.92rem;
  color: #475569;
  margin-bottom: 12px;
}

.adv-desc {
  font-size: 0.98rem;
  line-height: 1.7;
  color: #334155;
  margin-bottom: 14px;
}

.adv-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.88rem;
  color: #334155;
}

.adv-tags i {
  color: #2563eb;
  margin-right: 4px;
}

@media(max-width:768px) {
  .adv-item-wrap {
    padding: 22px 0;
  }

  .adv-tags {
    gap: 10px;
  }
}

/* ========== 核心优势板块 结束 ========== */



/* ========== 客户案例板块 开始 ========== */
.section-customer-case {
  background-color: var(--bg-pure-white);
  color: var(--color-dark-blue);
}

/*案例卡片*/
.case-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 1.75rem;
  height: 100%;
}

.case-card-tag {
  font-size: 0.82rem;
  color: var(--color-primary-blue);
  font-weight: 500;
  margin-bottom: 6px;
}

.case-card-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.case-card-text p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #334155;
  margin-bottom: 6px;
}

.case-card-text p span {
  font-weight: 600;
  color: #0f172a;
}

.case-divider {
  height: 1px;
  background: #e2e8f0;
  margin: 18px 0;
}

.case-data-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.case-data-item {
  flex: 1;
}

.data-num {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-blue);
}

.data-label {
  font-size: 0.82rem;
  color: #475569;
  margin: 2px 0 6px;
}

.data-increase {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary-blue);
}

.data-sublabel {
  font-size: 0.78rem;
  color: #64748b;
}

/*logo墙*/
.case-logo-wall-wrap {
  margin-top: 4rem;
}

.logo-wall-tip {
  font-size: 0.85rem;
  color: #64748b;
}

.case-logo-wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 1.5rem;
}

.logo-item {
  text-align: center;
  font-size: 0.9rem;
  color: #334155;
}

@media(max-width:768px) {
  .case-data-row {
    flex-direction: column;
  }

  .case-logo-wall {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-card {
    padding: 1.25rem;
  }
}

/* ========== 客户案例板块 结束 ========== */



/* ========== 套餐价格板块 开始 ========== */
.section-pricing {
  background-color: var(--bg-light-gray);
  color: var(--color-dark-blue);
}

.pricing-wrap {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.pricing-card {
  background-color: var(--bg-pure-white);
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  overflow: hidden;
}

.pricing-card-recommend {
  position: relative;
  border: 1px solid var(--color-primary-blue);
}

.recommend-tag {
  position: absolute;
  top: 0;
  right: 0;
  background-color: var(--color-primary-blue);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 10px;
  border-bottom-left-radius: 6px;
}

/* 头部左右布局核心 */
.pricing-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 2rem;
  gap: 2rem;
}

.pricing-head-left {
  flex: 1;
}

.pricing-head-right {
  flex-shrink: 0;
  text-align: right;
}

.pricing-card-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 0.75rem;
}

.pricing-card-subtext {
  font-size: 1rem;
  color: #475569;
  margin-bottom: 0.5rem;
}

.pricing-card-platform {
  font-size: 0.95rem;
  color: #475569;
}

.price-tip {
  font-size: 0.8rem;
  color: #64748b;
}

.price-num {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-primary-blue);
  line-height: 1.2;
}

.price-unit {
  font-size: 1rem;
  font-weight: 400;
  color: #64748b;
}

.pricing-btn {
  margin-top: 12px;
  background-color: var(--color-primary-blue);
  color: #ffffff;
  border: none;
  border-radius: 4px;
  padding: 10px 22px;
  font-size: 1rem;
}

/*原生table样式*/
.pricing-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.pricing-table th,
.pricing-table td {
  border: 1px solid #e2e8f0;
  padding: 1rem 2rem;
  vertical-align: top;
}

.pricing-table th {
  background-color: #f8fafc;
  font-weight: 600;
  text-align: left;
}

.pricing-table td:first-child {
  width: 34%;
  font-weight: 500;
  background: #fcfcfd;
}

.table-highlight td {
  background-color: #eff6ff !important;
  font-weight: 600;
}

.pricing-note {
  font-size: 0.95rem;
  color: #475569;
  line-height: 1.7;
}

/* 手机端：切换上下结构，上面文字，下面价格按钮 */
@media(max-width:768px) {
  .pricing-card-head {
    flex-direction: column;
    padding: 1.25rem;
    gap: 1.25rem;
  }

  .pricing-head-right {
    text-align: left;
  }

  .pricing-btn {
    width: 100%;
  }

  .pricing-table th,
  .pricing-table td {
    padding: 1rem 1.25rem;
  }

  .pricing-table td:first-child {
    width: 40%;
  }
}

/* ========== 套餐价格板块 结束 ========== */



/* ========== 覆盖主流生成式AI平台板块 开始 ========== */
.section-ai-platform {
  background-color: var(--bg-pure-white);
}

.ai-platform-subtitle {
  font-size: 1rem;
  color: var(--color-primary-blue);
  letter-spacing: 2px;
  margin-bottom: 0.75rem;
}

.ai-platform-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 1.2rem;
}

.ai-platform-desc {
  font-size: 1.1rem;
  color: #475569;
  max-width: 767px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.ai-tag-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.ai-tag {
  border: 1px solid #cbd5e1;
  border-radius: 2px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  color: #111827;
  background: #fff;
}

.ai-platform-note {
  font-size: 0.9rem;
  color: #64748b;
  max-width: 920px;
  margin: 0 auto;
  line-height: 1.7;
}

@media(max-width:768px) {
  .ai-platform-title {
    font-size: 1.6rem;
  }

  .ai-platform-desc {
    font-size: 1rem;
  }

  .ai-tag {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
}

/* ========== 覆盖主流生成式AI平台板块 结束 ========== */



/* ========== 页脚Footer板块 开始 */
.page-footer {
  background-color: var(--color-dark-blue);
  color: #94a3b8;
  padding: 4rem 0 2rem;
  position: relative;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1.2fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.footer-logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  /* background-color: var(--color-primary-blue);
  color: #fff;
  font-weight: bold;
  font-size: 1.1rem; */
}

.footer-logo-text {
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0;
}

.footer-company {
  color: #94a3b8;
  margin-bottom: 0.5rem;
}

.footer-slogan {
  color: #64748b;
}

.footer-col-title {
  color: #ffffff;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.footer-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav-list li {
  margin-bottom: 0.75rem;
}

.footer-nav-list a {
  color: #94a3b8;
  text-decoration: none;
}

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

.footer-contact-item {
  margin-bottom: 1rem;
}

.contact-label {
  display: block;
  color: #cbd5e1;
  margin-bottom: 0.3rem;
}

.footer-contact-phone-row {
  display: flex;
  gap: 2rem;
}

.footer-qrcode {
  width: 140px;
  height: 140px;
  background: #fff;
}

.footer-divider {
  width: 100%;
  height: 1px;
  background-color: #1e293b;
  margin-bottom: 1.5rem;
}

.footer-bottom {
  text-align: center;
  font-size: 0.9rem;
  color: #64748b;
  line-height: 1.8;
}

@media(max-width:992px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media(max-width:576px) {
  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-contact-phone-row {
    flex-direction: column;
    gap: 0;
  }
}

/* ========== 页脚Footer板块 结束 */