/* ==============================
   小天互连 · GEO 规范 全站统一样式
   主色：#176AFF
   文件：xiaotian-im-comm.css

   使用说明：
   1. 本文件负责全站基础样式、通用 Banner、按钮、卡片、区块、FAQ、CTA。
   2. 导航样式仍放在 style/im-navigation.css。
   3. Banner 背景统一使用 images/banner-xiaotian-im-bg.jpg。
============================== */

/* ==============================
   01. 基础重置
============================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --xt-blue: #176AFF;
  --xt-blue-dark: #0052CC;
  --xt-blue-deep: #0B3FAE;
  --xt-blue-light: #EEF5FF;
  --xt-blue-soft: #F5F9FF;

  --xt-text: #1F2937;
  --xt-text-sub: #4B5563;
  --xt-text-light: #6B7280;

  --xt-border: #E5EAF3;
  --xt-border-blue: #CFE0FF;

  --xt-white: #FFFFFF;
  --xt-bg: #F7F9FC;

  --xt-orange: #FFAB00;
  --xt-red: #E8665C;
  --xt-purple: #5E4FF1;
  --xt-green: #5DC67B;

  --xt-radius-lg: 18px;
  --xt-radius: 12px;
  --xt-radius-sm: 8px;

  --xt-shadow: 0 8px 26px rgba(23, 106, 255, 0.08);
  --xt-shadow-hover: 0 14px 36px rgba(23, 106, 255, 0.14);
}

html,
body {
  width: 100%;
  min-height: 100%;
  overflow-x: hidden;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--xt-text);
  background: var(--xt-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--xt-blue);
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

a:hover {
  color: var(--xt-blue-dark);
}

ul,
ol {
  list-style-position: inside;
}

button,
input,
textarea,
select {
  font-family: inherit;
}

/* ==============================
   02. 通用容器与排版
============================== */
.container,
.wrap,
.banner-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.35;
  color: var(--xt-text);
}

h1 {
  font-size: 44px;
}

h2 {
  font-size: 32px;
}

h3 {
  font-size: 22px;
}

h4 {
  font-size: 18px;
}

p {
  color: var(--xt-text-sub);
  margin-bottom: 14px;
}

/* ==============================
   03. 统一 Banner
   目标：接近用户截图中的蓝色科技感首屏
============================== */
.page-banner {
  width: 100%;
  min-height: 620px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 92px 0 84px;
  background:
    linear-gradient(
      90deg,
      rgba(23, 106, 255, 0.98) 0%,
      rgba(23, 106, 255, 0.94) 32%,
      rgba(23, 106, 255, 0.82) 62%,
      rgba(23, 106, 255, 0.42) 100%
    ),
    url("../images/banner-xiaotian-im-bg.jpg") no-repeat center center / cover;
  color: #fff;
}

/* 轻柔光，不依赖额外图片文件 */
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 30%, rgba(255, 255, 255, 0.16) 0%, rgba(255, 255, 255, 0.05) 24%, transparent 48%),
    linear-gradient(180deg, rgba(255,255,255,0.06) 0%, transparent 38%);
  pointer-events: none;
}

/* 底部轻微亮带，让背景更像截图中的流光效果 */
.page-banner::after {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: -22%;
  height: 46%;
  background: radial-gradient(ellipse at center, rgba(85, 230, 255, 0.22) 0%, rgba(85, 230, 255, 0.10) 32%, transparent 68%);
  pointer-events: none;
}

.banner-container {
  position: relative;
  z-index: 2;
}

.banner-text {
  max-width: 700px;
}

.banner-tag {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.96);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.28);
  margin-bottom: 24px;
  backdrop-filter: blur(6px);
}

.banner-title {
  font-size: 48px;
  line-height: 1.25;
  font-weight: 700;
  color: #fff;
  margin-bottom: 22px;
  letter-spacing: 0.5px;
}

.banner-desc {
  max-width: 660px;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.90);
  margin-bottom: 14px;
}

.banner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 36px;
}

.tag-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 16px;
  border-radius: 7px;
  font-size: 14px;
  line-height: 1;
  color: #fff;
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(4px);
}

.banner-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 如果页面里还保留 banner-image，默认不显示，避免和截图风格冲突 */
.banner-image {
  display: none;
}

/* ==============================
   04. 按钮体系
============================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 172px;
  height: 52px;
  padding: 0 28px;
  border-radius: 7px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s ease;
}

.btn-primary {
  background: #fff;
  color: var(--xt-blue);
  border-color: #fff;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: #F6F9FF;
  color: var(--xt-blue);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.58);
}

.btn-outline:hover {
  transform: translateY(-2px);
  color: #fff;
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.88);
}

.btn-blue {
  background: var(--xt-blue);
  color: #fff;
  border-color: var(--xt-blue);
}

.btn-blue:hover {
  background: var(--xt-blue-dark);
  color: #fff;
  transform: translateY(-2px);
}

.btn-light {
  background: var(--xt-blue-light);
  color: var(--xt-blue);
  border-color: var(--xt-border-blue);
}

.btn-light:hover {
  background: #E4EFFF;
  color: var(--xt-blue-dark);
}

/* ==============================
   05. 通用区块
============================== */
.section {
  padding: 58px 0;
  background: #fff;
}

.section.white {
  background: #fff;
}

.section.light {
  background: var(--xt-blue-soft);
}

/* 分区标题：标签靠左，H2标题与描述居中 */
.sec-head {
  text-align: left;
  margin-bottom: 34px;
}

.sec-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 28px;
  margin-bottom: 18px;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: var(--xt-blue);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* 标签后面的分区方块：从深到浅，最后自然淡出 */
.sec-eyebrow::after {
  content: "";
  display: inline-block;
  width: 96px;
  height: 8px;
  flex: 0 0 auto;
  background:
    linear-gradient(rgba(23,106,255,1), rgba(23,106,255,1)) 0 0 / 8px 8px no-repeat,
    linear-gradient(rgba(23,106,255,0.72), rgba(23,106,255,0.72)) 22px 0 / 8px 8px no-repeat,
    linear-gradient(rgba(23,106,255,0.42), rgba(23,106,255,0.42)) 44px 0 / 8px 8px no-repeat,
    linear-gradient(rgba(23,106,255,0.18), rgba(23,106,255,0.18)) 66px 0 / 8px 8px no-repeat;
  border-radius: 2px;
}

.sec-title {
  font-size: 34px;
  font-weight: 700;
  color: var(--xt-text);
  line-height: 1.35;
  margin-bottom: 12px;
  text-align: center;
}

.sec-sub {
  max-width: 760px;
  margin: 0 auto;
  font-size: 14px;
  color: var(--xt-text-light);
  line-height: 1.8;
  text-align: center;
}

/* ==============================
   06. 通用卡片
============================== */
.card,
.feat-card,
.org-card,
.rely-card,
.safe-sub,
.end-card,
.explore-card,
.compat-card,
.dl-card,
.faq-item {
  background: #fff;
  border: 1px solid var(--xt-border);
  border-radius: var(--xt-radius);
  box-shadow: var(--xt-shadow);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.card:hover,
.feat-card:hover,
.org-card:hover,
.rely-card:hover,
.safe-sub:hover,
.end-card:hover,
.explore-card:hover,
.compat-card:hover,
.dl-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--xt-shadow-hover);
  border-color: var(--xt-border-blue);
}

.card,
.feat-card,
.org-card,
.rely-card,
.safe-sub,
.end-card,
.explore-card {
  padding: 26px;
}

.feat-grid,
.org-grid,
.rely-grid,
.safe-grid,
.explore-grid {
  display: grid;
  gap: 22px;
}

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

.org-grid,
.rely-grid,
.safe-grid {
  grid-template-columns: repeat(2, 1fr);
}

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

.feat-icon,
.rely-icon,
.scope-bar-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--xt-blue-light);
  color: var(--xt-blue);
  font-size: 22px;
  margin-bottom: 16px;
}

.feat-card h3,
.org-card h3,
.rely-card h3,
.safe-sub h3,
.end-card h3,
.explore-card h3 {
  color: var(--xt-text);
  margin-bottom: 10px;
}

.feat-card p,
.org-card p,
.rely-card p,
.safe-sub p,
.end-card p,
.explore-card p {
  color: var(--xt-text-light);
  font-size: 15px;
  line-height: 1.75;
}

.feat-pts,
.org-pts,
.rely-pts {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.feat-pt,
.org-pt,
.rely-pt {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--xt-text-sub);
  line-height: 1.65;
}

.feat-pt::before,
.org-pt::before,
.rely-pt::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--xt-blue);
}

.org-tags,
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0;
}

.org-tag,
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--xt-blue-light);
  color: var(--xt-blue);
  font-size: 13px;
  font-weight: 600;
}

/* ==============================
   07. 提示条 / 结论条
============================== */
.scope-bar,
.notice {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px 24px;
  background: #fff;
  border: 1px solid var(--xt-border-blue);
  border-left: 4px solid var(--xt-blue);
  border-radius: var(--xt-radius);
  box-shadow: var(--xt-shadow);
}

.scope-bar h3,
.notice h4 {
  font-size: 18px;
  color: var(--xt-text);
  margin-bottom: 6px;
}

.scope-bar p,
.notice p {
  margin-bottom: 0;
  font-size: 15px;
  line-height: 1.8;
}

/* ==============================
   08. 下载/兼容/矩阵等辅助模块
============================== */
.dl-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.dl-card {
  padding: 26px;
}

.dl-full {
  margin-top: 24px;
}

.compat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.compat-card {
  padding: 22px;
  text-align: center;
}

.compat-type {
  font-size: 12px;
  font-weight: 700;
  color: var(--xt-blue);
  margin-bottom: 8px;
}

.compat-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--xt-text);
  margin-bottom: 6px;
}

.compat-status {
  font-size: 13px;
  color: var(--xt-green);
  font-weight: 700;
}

/* ==============================
   09. FAQ
============================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  overflow: hidden;
}

.faq-q {
  width: 100%;
  min-height: 58px;
  padding: 18px 22px;
  border: none;
  background: #fff;
  color: var(--xt-text);
  font-size: 16px;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.faq-q:hover {
  color: var(--xt-blue);
}

.faq-a {
  padding: 0 22px 20px;
  color: var(--xt-text-sub);
  font-size: 15px;
  line-height: 1.8;
}

/* ==============================
   10. 底部 CTA
============================== */
.cta-section,
.end-section {
  padding: 72px 0;
  background:
    linear-gradient(135deg, rgba(23, 106, 255, 0.96), rgba(11, 63, 174, 0.96)),
    url("../images/banner-xiaotian-im-bg.jpg") no-repeat center center / cover;
  color: #fff;
  text-align: center;
}

.cta-section h2,
.end-section h2 {
  color: #fff;
  font-size: 34px;
  margin-bottom: 14px;
}

.cta-section p,
.end-section p {
  max-width: 760px;
  margin: 0 auto 28px;
  color: rgba(255,255,255,0.88);
  font-size: 16px;
  line-height: 1.85;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 相邻模块之间收紧空白，避免上下两块断层太大 */
.section + .section {
  padding-top: 52px;
}

/* 页面里用行内 margin-top 做的居中按钮，统一稍微收紧 */
.section .wrap > div[style*="text-align:center"][style*="margin-top"] {
  margin-top: 18px !important;
}

/* 浅色区块里的 outline 按钮默认改成蓝色描边，避免白色按钮在浅背景里看不清 */
.section.light .btn-outline,
.section.white .btn-outline {
  color: var(--xt-blue);
  border-color: var(--xt-border-blue);
  background: rgba(255,255,255,0.72);
}

.section.light .btn-outline:hover,
.section.white .btn-outline:hover {
  color: var(--xt-blue-dark);
  border-color: var(--xt-blue);
  background: #fff;
}

/* ==============================
   11. 响应式
============================== */
@media (max-width: 1200px) {
  .banner-title {
    font-size: 48px;
  }

  .feat-grid,
  .explore-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .page-banner {
    min-height: auto;
    padding: 76px 0 68px;
    background:
      linear-gradient(
        180deg,
        rgba(23, 106, 255, 0.98) 0%,
        rgba(23, 106, 255, 0.92) 58%,
        rgba(23, 106, 255, 0.78) 100%
      ),
      url("../images/banner-xiaotian-im-bg.jpg") no-repeat center center / cover;
  }

  .banner-container,
  .banner-text {
    text-align: center;
  }

  .banner-text {
    max-width: 100%;
  }

  .banner-title {
    font-size: 40px;
  }

  .banner-desc {
    max-width: 100%;
    font-size: 16px;
  }

  .banner-tags,
  .banner-buttons {
    justify-content: center;
  }

  .org-grid,
  .rely-grid,
  .safe-grid,
  .dl-grid,
  .compat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: 50px 0;
  }
}

@media (max-width: 768px) {
  .container,
  .wrap,
  .banner-container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .page-banner {
    padding: 60px 0 54px;
  }

  .banner-tag {
    min-height: 32px;
    padding: 0 14px;
    font-size: 13px;
    margin-bottom: 18px;
  }

  .banner-title {
    font-size: 32px;
    line-height: 1.32;
    margin-bottom: 16px;
  }

  .banner-desc {
    font-size: 15px;
    line-height: 1.8;
  }

  .banner-tags {
    gap: 10px;
    margin: 22px 0 28px;
  }

  .tag-item {
    min-height: 34px;
    padding: 0 12px;
    font-size: 13px;
  }

  .banner-buttons,
  .cta-buttons {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    min-width: auto;
    height: 48px;
    font-size: 15px;
  }

  .section {
    padding: 42px 0;
  }

  .sec-head {
    margin-bottom: 26px;
  }

  .sec-eyebrow {
    gap: 10px;
    font-size: 14px;
  }

  .sec-eyebrow::after {
    width: 68px;
    height: 7px;
    background:
      linear-gradient(rgba(23,106,255,1), rgba(23,106,255,1)) 0 0 / 7px 7px no-repeat,
      linear-gradient(rgba(23,106,255,0.68), rgba(23,106,255,0.68)) 17px 0 / 7px 7px no-repeat,
      linear-gradient(rgba(23,106,255,0.38), rgba(23,106,255,0.38)) 34px 0 / 7px 7px no-repeat,
      linear-gradient(rgba(23,106,255,0.16), rgba(23,106,255,0.16)) 51px 0 / 7px 7px no-repeat;
  }

  .sec-title {
    font-size: 26px;
  }

  .sec-sub {
    font-size: 15px;
  }

  .feat-grid,
  .org-grid,
  .rely-grid,
  .safe-grid,
  .explore-grid,
  .dl-grid,
  .compat-grid {
    grid-template-columns: 1fr;
  }

  .card,
  .feat-card,
  .org-card,
  .rely-card,
  .safe-sub,
  .end-card,
  .explore-card {
    padding: 22px;
  }

  .scope-bar,
  .notice {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .banner-title {
    font-size: 28px;
  }

  .banner-desc {
    font-size: 14px;
  }

  .tag-item {
    width: 100%;
  }
}

/* ==============================
   Banner 右侧插图
   用于产品页 / 方案页首屏差异化
============================== */
.page-banner.has-illustration .banner-container,
.product-im-banner .banner-container,
.product-safe-banner .banner-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.page-banner.has-illustration .banner-text,
.product-im-banner .banner-text,
.product-safe-banner .banner-text {
  flex: 0 0 58%;
  max-width: 700px;
}

.page-banner.has-illustration .banner-image,
.product-im-banner .banner-image,
.product-safe-banner .banner-image {
  display: flex;
  flex: 0 0 36%;
  justify-content: flex-end;
  align-items: center;
  pointer-events: none;
}

.page-banner.has-illustration .banner-image img,
.product-im-banner .banner-image img,
.product-safe-banner .banner-image img {
  width: 100%;
  max-width: 390px;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 22px 38px rgba(0, 30, 100, 0.20));
}

/* 安全页如果后续插图稍大，可以单独微调 */
.product-safe-banner .banner-image img {
  max-width: 400px;
}

/* 移动端隐藏右侧插图，保证首屏不拥挤 */
@media (max-width: 992px) {
  .page-banner.has-illustration .banner-container,
  .product-im-banner .banner-container,
  .product-safe-banner .banner-container {
    display: block;
    text-align: center;
  }

  .page-banner.has-illustration .banner-text,
  .product-im-banner .banner-text,
  .product-safe-banner .banner-text {
    max-width: 100%;
  }

  .page-banner.has-illustration .banner-image,
  .product-im-banner .banner-image,
  .product-safe-banner .banner-image {
    display: none;
  }
  /* zxy  */
  .page-banner .banner-tags { 
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
  }
  .banner-buttons{
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .page-banner .btn {
    height: 40px;
    font-size: 14px !important;
  }
  
  
}