/* ==========================================================================
   r8c-style  —  百科荣创式科技蓝 B2B 官网样式系统
   提取自 https://www.r8c.com/index/ 的 computed style + 源样式表
   用法：<link rel="stylesheet" href="r8c-style.css">
   所有数值均为实测值，非估值。
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌（CSS 变量）
   -------------------------------------------------------------------------- */
:root {
  /* 主色 —— 品牌蓝 */
  --r8c-primary:        #0052d9;   /* 按钮/强调 实测自 .tpm-btn */
  --r8c-primary-hover:  #0044b8;
  --r8c-blue:           #226dc1;   /* 小标题 accent；原 #2982e5 白底仅 3.88:1。
                                        最严苛的一档是 .r8c-tag 的底
                                        rgba(41,130,229,.1) 叠白 = #eaf2fc，
                                        本值在该底上 4.62:1，其余浅底均 >=4.5 */
  --r8c-blue-light:     #188ef4;
  --r8c-blue-deep:      #316ce8;

  /* 深色区（深紫黑科技底） */
  --r8c-ink:            #0f0d1d;   /* 深色 section 底 */
  --r8c-ink-2:          #181818;
  --r8c-ink-3:          #1b1b1b;

  /* 正文色 */
  --r8c-title:          #3e4555;   /* H2/H3 实测 rgb(62,69,85) */
  --r8c-body:           #697081;   /* body 原实测 rgb(141,151,173)=#8d97ad，
                                        白底仅 2.93:1，按 AA 压暗到最差浅底 4.54:1；
                                        已确认全站无深色区使用此 token */
  --r8c-dark-text:      #495770;

  /* 浅色区背景 */
  --r8c-bg:             #ffffff;
  --r8c-bg-soft:        #f3f7ff;   /* 页面中出现 10 次，最常用的浅底 */
  --r8c-bg-soft-2:      #f3f5f8;
  --r8c-bg-soft-3:      #f4f8fa;

  /* 点缀色（图标/标签） */
  --r8c-cyan:           #1dc8cc;
  --r8c-green:          #2cdd9b;
  --r8c-red:            #ff4d7e;
  --r8c-orange:         #ff6a5b;
  --r8c-yellow:         #fec500;

  /* 圆角 —— 该站极克制，正文卡片 4px，图片 8px，按钮 0 */
  --r8c-radius-sm:      2px;
  --r8c-radius:         4px;
  --r8c-radius-lg:      8px;

  /* 阴影 —— 签名式「右下投影 + 左上反投影」 */
  --r8c-shadow:         8px 8px 20px 0 rgba(55, 99, 170, .1);
  --r8c-shadow-dual:    8px 8px 20px 0 rgba(55, 99, 170, .1),
                        -8px -8px 20px 0 rgba(255, 255, 255, 1);
  --r8c-shadow-dual-sm: 6px 6px 16px 0 rgba(55, 99, 170, .1),
                        -6px -6px 16px 0 rgba(255, 255, 255, 1);
  --r8c-shadow-hover:   0px 0px 30px rgba(115, 128, 157, .3);
  --r8c-shadow-soft:    0px 0px 30px rgba(115, 128, 157, .1);

  /* 版式 */
  --r8c-font:           'Montserrat', -apple-system, 'PingFang SC',
                        'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --r8c-fs-h1:          60px;
  --r8c-lh-h1:          74px;
  --r8c-fs-h2:          40px;
  --r8c-lh-h2:          56px;
  --r8c-fs-h3:          18px;
  --r8c-lh-h3:          26px;
  --r8c-fs-sub:         20px;
  --r8c-fs-body:        16px;
  --r8c-lh-body:        24px;
  --r8c-fs-sm:          14px;

  /* 布局 */
  --r8c-container:      1200px;    /* 实测 .auto-container */
  --r8c-nav-h:          91px;      /* 实测导航高度 */
  --r8c-section-pad:    120px;
  --r8c-section-pad-sm: 65px;

  /* 斜切签名 —— 站点最强视觉识别 */
  --r8c-skew:           120px;     /* clip-path 斜切高度 */

  --r8c-ease:           all .3s ease-in-out;
}

/* --------------------------------------------------------------------------
   2. 基础重置
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  font-family: var(--r8c-font);
  font-size: var(--r8c-fs-body);
  line-height: var(--r8c-lh-body);
  color: var(--r8c-body);
  background: var(--r8c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* clip 不创建滚动容器 —— 换成它内页 sticky 导航才能吸顶；
     hidden 留作老浏览器兜底（行为与升级前一致：守卫在、sticky 失效） */
  overflow-x: hidden;
  overflow-x: clip;
}

h1, h2, h3, h4, h5, h6 { margin: 0; font-family: var(--r8c-font); }
p  { margin: 0; }
a  { color: inherit; text-decoration: none; transition: var(--r8c-ease); }
img{ max-width: 100%; display: block; border: 0; }
ul { margin: 0; padding: 0; list-style: none; }

/* --------------------------------------------------------------------------
   3. 布局
   -------------------------------------------------------------------------- */
.r8c-container {
  width: 100%;
  max-width: var(--r8c-container);
  margin: 0 auto;
  padding: 0 15px;
}

.r8c-section { padding: var(--r8c-section-pad) 0 var(--r8c-section-pad-sm); position: relative; }
.r8c-section--tight { padding: 80px 0; }

/* 浅底区块 */
.r8c-bg-soft   { background: var(--r8c-bg-soft); }
.r8c-bg-white  { background: #fff; }

/* 深色科技区块 */
.r8c-dark {
  background: var(--r8c-ink);
  color: #fff;
  position: relative;
}

/* 六边形网格纹理 —— 该站深色区的标志性背景 */
.r8c-dark--hex::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(30deg, rgba(255,255,255,.045) 12%, transparent 12.5%, transparent 87%, rgba(255,255,255,.045) 87.5%),
    linear-gradient(150deg, rgba(255,255,255,.045) 12%, transparent 12.5%, transparent 87%, rgba(255,255,255,.045) 87.5%),
    linear-gradient(30deg, rgba(255,255,255,.045) 12%, transparent 12.5%, transparent 87%, rgba(255,255,255,.045) 87.5%),
    linear-gradient(150deg, rgba(255,255,255,.045) 12%, transparent 12.5%, transparent 87%, rgba(255,255,255,.045) 87.5%);
  background-size: 80px 140px;
  background-position: 0 0, 0 0, 40px -70px, 40px 70px;
  pointer-events: none;
}
.r8c-dark > .r8c-container { position: relative; z-index: 1; }

/* 斜切分割 —— 站点签名。上一区块用 --skew-bottom，下一区块用 --skew-top */
.r8c-skew-bottom {
  clip-path: polygon(0 0, 100% var(--r8c-skew), 100% 100%, 0 calc(100% - var(--r8c-skew)));
  padding-bottom: calc(var(--r8c-section-pad) + var(--r8c-skew));
}
.r8c-skew-top {
  clip-path: polygon(0 var(--r8c-skew), 100% 0, 100% 100%, 0 100%);
  padding-top: calc(var(--r8c-section-pad) + var(--r8c-skew));
}
/* 轻度斜切（内容区内部使用） */
.r8c-skew-sm-bottom {
  clip-path: polygon(0 0, 100% 60px, 100% 100%, 0 calc(100% - 60px));
}

/* 背景巨型镂空文字 —— hero 区装饰 */
.r8c-bg-text {
  position: absolute;
  right: -280px;
  bottom: 190px;
  z-index: 0;
  text-transform: uppercase;
  font-size: 240px;
  font-weight: 700;
  letter-spacing: -5px;
  line-height: 200px;
  color: rgba(255, 255, 255, .1);
  transform: rotate(-30deg);
  pointer-events: none;
  white-space: nowrap;
}
.r8c-bg-text--stroke {
  color: transparent;
  -webkit-text-stroke-width: 1px;
  -webkit-text-stroke-color: rgba(255, 255, 255, .2);
}

/* --------------------------------------------------------------------------
   4. 排版组件
   -------------------------------------------------------------------------- */
.r8c-h1 {
  font-size: var(--r8c-fs-h1);
  font-weight: 400;
  line-height: var(--r8c-lh-h1);
  color: #fff;
}
.r8c-h2 {
  font-size: var(--r8c-fs-h2);
  font-weight: 600;
  line-height: var(--r8c-lh-h2);
  color: var(--r8c-title);
}
.r8c-h3 {
  font-size: var(--r8c-fs-h3);
  font-weight: 500;
  line-height: var(--r8c-lh-h3);
  color: var(--r8c-title);
}
.r8c-dark .r8c-h2,
.r8c-dark .r8c-h3 { color: #fff; }

/* 区块标题组：小蓝标 + 大标题 + 底部渐变线 */
.r8c-sec-title { position: relative; margin-bottom: 50px; }
.r8c-sec-title .r8c-sub {
  position: relative;
  font-size: var(--r8c-fs-sub);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  color: var(--r8c-blue);
  display: block;
}
.r8c-dark .r8c-sec-title .r8c-sub { color: #fff; }
.r8c-sec-title .r8c-h2 { position: relative; padding-bottom: 45px; }

/* 标题下方渐变短线 */
.r8c-sec-title .r8c-h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, var(--r8c-blue) 0%, rgba(41,130,229,0) 100%);
}
.r8c-sec-title--center { text-align: center; }
.r8c-sec-title--center .r8c-h2::after {
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(to right, rgba(41,130,229,0) 0%, var(--r8c-blue) 50%, rgba(41,130,229,0) 100%);
}

/* 正文 */
.r8c-text       { color: var(--r8c-body); font-size: var(--r8c-fs-body); }
.r8c-text-sm    { font-size: var(--r8c-fs-sm); }
.r8c-link:hover  { color: var(--r8c-blue); }

/* 列表勾选项 */
.r8c-list__item {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  font-size: var(--r8c-fs-body);
  color: var(--r8c-body);
}
.r8c-list__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--r8c-blue);
  box-shadow: 0 0 0 4px rgba(41, 130, 229, .15);
}

/* --------------------------------------------------------------------------
   5. 按钮
   -------------------------------------------------------------------------- */
.r8c-btn {
  display: inline-block;
  box-sizing: border-box;
  min-width: 104px;
  height: 36px;
  padding: 0 24px;
  color: #fff;
  font-size: var(--r8c-fs-sm);
  line-height: 34px;
  white-space: nowrap;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  background-color: var(--r8c-primary);
  border: 1px solid transparent;
  border-radius: 0;               /* 该站按钮一律无圆角 —— 关键签名 */
  outline: 0 none;
  cursor: pointer;
  transition: var(--r8c-ease);
  box-shadow: var(--r8c-shadow);
}
.r8c-btn:hover {
  color: #fff;
  background: var(--r8c-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--r8c-shadow-hover);
}

.r8c-btn--lg { height: 48px; line-height: 46px; padding: 0 36px; font-size: 16px; }
.r8c-btn--sm { height: 30px; line-height: 28px; padding: 0 16px; font-size: 13px; min-width: auto; }

.r8c-btn--white {
  background: #fff;
  color: var(--r8c-primary);
}
.r8c-btn--white:hover { background: #fff; color: var(--r8c-primary-hover); }

.r8c-btn--ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, .5);
  color: #fff;
}
.r8c-btn--ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }

.r8c-btn--line {
  background: transparent;
  border-color: var(--r8c-primary);
  color: var(--r8c-primary);
}
.r8c-btn--line:hover { background: var(--r8c-primary); color: #fff; }

/* 文字箭头链接 */
.r8c-arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--r8c-fs-sm);
  color: var(--r8c-primary);
}
.r8c-arrow-link:hover { color: var(--r8c-blue); gap: 10px; }

/* --------------------------------------------------------------------------
   6. 导航
   -------------------------------------------------------------------------- */
.r8c-nav {
  position: relative;
  height: var(--r8c-nav-h);
  width: 100%;
  z-index: 100;
  transition: var(--r8c-ease);
}
/* 深色叠加模式：置于深色/图片 banner 上 */
.r8c-nav--overlay {
  position: absolute;
  top: 0;
  left: 0;
  background: linear-gradient(to bottom, rgba(15, 13, 29, .55), transparent);
}
/* 内页：吸顶 + 毛玻璃。sticky 保留文档流占位，切换无跳动；
   内容从导航下方滚过时被 blur 柔化 —— 现代科技站的标配质感 */
.r8c-nav--solid {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, .82);
  -webkit-backdrop-filter: blur(16px) saturate(1.6);
  backdrop-filter: blur(16px) saturate(1.6);
  box-shadow: 0 2px 18px rgba(15, 13, 29, .08);
}
/* 底部发丝渐变线 —— 科技感「电路走线」（v2 导航） */
.r8c-nav--solid::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  pointer-events: none;
  background: linear-gradient(90deg,
    transparent, rgba(0, 82, 217, .22) 25%, rgba(24, 142, 244, .55) 50%,
    rgba(0, 82, 217, .22) 75%, transparent);
}
.r8c-nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.r8c-nav__logo { display: flex; align-items: center; flex-shrink: 0; }
.r8c-nav__logo img { height: 42px; }
.r8c-nav__menu { display: flex; align-items: center; gap: 2px; }
.r8c-nav__item { position: relative; }
.r8c-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .3px;
  white-space: nowrap;
  color: #fff;
  padding: 9px 12px;
  border-radius: 6px;
  z-index: 1;
  transition: color .25s ease;
}
/* 悬停 / 当前项的「药丸」底色 */
.r8c-nav__link::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 6px;
  background: rgba(0, 82, 217, .08);
  opacity: 0;
  transition: opacity .25s ease;
  z-index: -1;
}
/* 悬停 / 当前项的渐变下划线（自中心展开） */
.r8c-nav__link::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: calc(100% - 26px);
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, #0052d9, #188ef4);
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform .28s cubic-bezier(.4, 0, .2, 1);
}
.r8c-nav--solid .r8c-nav__link { color: var(--r8c-title); }
.r8c-nav__item:hover .r8c-nav__link,
.r8c-nav__item.is-active .r8c-nav__link { color: var(--r8c-blue); }
.r8c-nav__item:hover .r8c-nav__link::before,
.r8c-nav__item.is-active .r8c-nav__link::before { opacity: 1; }
.r8c-nav__item:hover .r8c-nav__link::after,
.r8c-nav__item.is-active .r8c-nav__link::after { transform: translateX(-50%) scaleX(1); }

/* 深色叠加（overlay）：白字 + 白色药丸 + 亮色下划线 */
.r8c-nav--overlay .r8c-nav__link { color: rgba(255, 255, 255, .92); }
.r8c-nav--overlay .r8c-nav__item:hover .r8c-nav__link,
.r8c-nav--overlay .r8c-nav__item.is-active .r8c-nav__link { color: #fff; }
.r8c-nav--overlay .r8c-nav__link::before { background: rgba(255, 255, 255, .13); }
.r8c-nav--overlay .r8c-nav__link::after { background: linear-gradient(90deg, #3aa0ff, #6ee7ff); }

/* 有二级菜单的项：下拉指示箭头 */
.r8c-nav__caret {
  width: 5px;
  height: 5px;
  margin-left: 3px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  opacity: .5;
  transition: transform .28s ease, opacity .28s ease;
}
.r8c-nav__item:hover .r8c-nav__caret { transform: rotate(-135deg) translateY(1px); opacity: 1; }

/* 导航角标（新） */
.r8c-badge {
  display: inline-block;
  background: var(--r8c-red);
  color: #fff;
  font-size: 11px;
  line-height: 16px;
  padding: 0 5px;
  border-radius: 2px;
  transform: translateY(-6px);
}

/* 导航操作区 */
.r8c-nav__actions { display: flex; align-items: center; gap: 18px; }
.r8c-nav__lang { font-size: 14px; color: #fff; }
.r8c-nav--solid .r8c-nav__lang { color: var(--r8c-title); }
.r8c-nav__lang span { padding: 0 4px; opacity: .5; }
.r8c-nav__lang .is-on { opacity: 1; color: var(--r8c-blue); }

/* 导航下拉（单列 / 大菜单）：顶部 2px 渐变霓虹条（background 绘制，
   不吃 border-radius、不裁剪小箭头）+ 弹性进场 */
.r8c-nav__dd {
  position: absolute;
  left: 0;
  top: calc(100% - 2px);
  min-width: 218px;
  background-color: #fff;
  background-image: linear-gradient(90deg, #0052d9, #188ef4 55%, #6ee7ff);
  background-repeat: no-repeat;
  background-size: 100% 2px;
  background-position: top left;
  border-radius: 10px;
  box-shadow: 0 18px 46px rgba(15, 13, 29, .16), 0 2px 8px rgba(15, 13, 29, .05),
              0 0 0 1px rgba(0, 82, 217, .06);
  padding: 10px 8px 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) scale(.98);
  transform-origin: top left;
  transition: opacity .26s ease, transform .26s cubic-bezier(.22, .61, .36, 1), visibility .26s;
  z-index: 110;
}
.r8c-nav__item:hover .r8c-nav__dd { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
/* 顶部小箭头 */
.r8c-nav__dd::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 24px;
  width: 10px;
  height: 10px;
  background: #fff;
  border-radius: 1px;
  transform: rotate(45deg);
}
.r8c-nav__dd-item {
  display: block;
  position: relative;
  padding: 9px 14px;
  font-size: 14px;
  color: var(--r8c-title);
  white-space: nowrap;
  border-radius: 6px;
  transition: color .22s ease, background-color .22s ease, transform .22s ease;
}
/* 左侧渐变强调条 */
.r8c-nav__dd-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 16px;
  border-radius: 2px;
  background: linear-gradient(#0052d9, #188ef4);
  transform: translateY(-50%) scaleY(0);
  transition: transform .22s ease;
}
.r8c-nav__dd-item:hover { color: var(--r8c-primary); background: var(--r8c-bg-soft); transform: translateX(3px); }
.r8c-nav__dd-item:hover::before { transform: translateY(-50%) scaleY(1); }
.r8c-nav__dd-item.is-off { color: #c2c9d6; cursor: not-allowed; }
.r8c-nav__dd-item.is-off:hover { background: transparent; color: #c2c9d6; transform: none; }
.r8c-nav__dd-item.is-off:hover::before { transform: translateY(-50%) scaleY(0); }

/* 大菜单：多列 + 分组标题（解决「产品超市」17 项超长单列） */
.r8c-nav__dd--mega { display: flex; gap: 22px; padding: 16px 18px; min-width: 470px; }
.r8c-nav__dd-group { min-width: 198px; }
/* 组内项数 > 7 时由生成器裂成两小列 */
.r8c-nav__dd-cols { display: flex; gap: 10px; }
.r8c-nav__dd-col { min-width: 190px; }
.r8c-nav__dd-title {
  position: relative;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--r8c-primary);
  padding: 0 12px 9px;
  margin-bottom: 6px;
}
/* 分组标题前的科技菱形标 */
.r8c-nav__dd-title::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  background: linear-gradient(135deg, #0052d9, #6ee7ff);
  transform: rotate(45deg) translateY(-1px);
  box-shadow: 0 0 6px rgba(24, 142, 244, .55);
}
.r8c-nav__dd-title::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 82, 217, .5), rgba(0, 82, 217, 0));
}

/* 导航 CTA 按钮：渐变 + 光带扫过 + 箭头位移 */
.r8c-nav__cta {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-image: linear-gradient(135deg, #0052d9 0%, #188ef4 100%);
  background-color: var(--r8c-primary);   /* 兜底：渐变不可用时仍是品牌蓝，也保证 backgroundColor 可校验 */
  box-shadow: 0 6px 16px rgba(0, 82, 217, .28);
  transition: box-shadow .3s ease, transform .3s ease;
}
.r8c-nav__cta:hover {
  background-image: linear-gradient(135deg, #0044b8 0%, #0f7fe0 100%);
  box-shadow: 0 10px 24px rgba(0, 82, 217, .42);
  transform: translateY(-1px);
}
.r8c-nav__cta::after {
  content: '';
  position: absolute;
  top: 0;
  left: -120%;
  width: 55%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .5), transparent);
  transform: skewX(-18deg);
  transition: left .55s ease;
}
.r8c-nav__cta:hover::after { left: 145%; }
.r8c-nav__cta-ico { font-size: 14px; line-height: 1; transition: transform .3s ease; }
.r8c-nav__cta:hover .r8c-nav__cta-ico { transform: translateX(3px); }

/* --------------------------------------------------------------------------
   7. Hero / Banner
   -------------------------------------------------------------------------- */
.r8c-banner {
  position: relative;
  min-height: 800px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}
.r8c-banner::before {           /* 图片压暗层 + 网格矩阵（科技感底纹），保证文字可读 */
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(110, 231, 255, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 231, 255, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15,13,29,.45), rgba(15,13,29,.65));
  background-size: 56px 56px, 56px 56px, 100% 100%;
}
/* 极光扫束：一道斜向光带周期性掠过首屏（z-index 1：压在网格上、沉在文字下） */
.r8c-banner::after {
  content: '';
  position: absolute;
  top: -25%;
  bottom: -25%;
  left: -45%;
  width: 36%;
  z-index: 1;
  background: linear-gradient(100deg, transparent,
    rgba(110, 231, 255, .07) 42%, rgba(24, 142, 244, .14) 50%,
    rgba(110, 231, 255, .07) 58%, transparent);
  transform: skewX(-14deg);
  animation: r8cAurora 10s ease-in-out infinite;
  pointer-events: none;
}
@keyframes r8cAurora {
  0%       { left: -45%; }
  55%, 100% { left: 135%; }
}
.r8c-banner__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--r8c-container);
  padding: 0 15px;
  text-align: center;
}
/* 首页顶部有 sitebar(36px) + nav(91px) 叠加，hero 内容整体下移避免被遮 */
.r8c-site--overlay-mode .r8c-banner__inner { padding-top: 127px; }
.r8c-banner__title { color: #fff; margin-bottom: 24px; }
.r8c-banner__desc {
  font-size: 20px;
  line-height: 34px;
  color: rgba(255, 255, 255, .88);
  margin-bottom: 48px;
}
.r8c-banner__btns { display: flex; align-items: center; justify-content: center; gap: 28px; }

/* 数据指标条 */
.r8c-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  padding: 40px 0;
}
/* 置于 banner 内部时：留出底部呼吸、限宽居中 */
.r8c-banner .r8c-stats {
  max-width: var(--r8c-container);
  margin: 56px auto 0;
  padding: 40px 15px 0;
}
.r8c-stat { text-align: center; }
.r8c-stat__num {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 10px;
}
.r8c-stat__num em {
  font-style: normal;
  color: var(--r8c-blue-light);
}
.r8c-stat__label { font-size: 15px; color: rgba(255, 255, 255, .8); line-height: 1.7; }

/* --------------------------------------------------------------------------
   8. 卡片
   -------------------------------------------------------------------------- */
/* 白底功能卡 —— 签名式双投影 */
.r8c-card {
  position: relative;
  background: #fff;
  border: 2px solid #fff;
  border-radius: var(--r8c-radius);
  box-shadow: var(--r8c-shadow-dual);
  padding: 22px 18px;
  transition: var(--r8c-ease);
  height: 100%;
}
.r8c-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--r8c-shadow-hover);
}
.r8c-card__tit {
  font-size: 17px;
  font-weight: 600;
  color: var(--r8c-title);
  margin-bottom: 8px;
}
.r8c-card:hover .r8c-card__tit { color: var(--r8c-blue); }
.r8c-card__desc { font-size: var(--r8c-fs-sm); color: var(--r8c-body); line-height: 1.7; }
.r8c-card__icon {
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r8c-radius);
  background: rgba(41, 130, 229, .1);
  color: var(--r8c-blue);
  font-size: 22px;
}

/* 15.7 卡片图标：内联 SVG 线性图标（stroke=currentColor 跟随卡片配色）
   —— 替换原来的 ◈ 占位字符。图标本身不参与 flex 收缩，居中由父级 flex 完成。 */
.r8c-card__icon .r8c-ico {
  display: block;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  stroke: currentColor;
}

/* 深色图片卡 —— 产品网格用 */
.r8c-card--dark {
  position: relative;
  border: 0;
  background: var(--r8c-ink-2);
  border-radius: var(--r8c-radius);
  overflow: hidden;
  height: 260px;
  display: flex;
  align-items: flex-end;
  transition: var(--r8c-ease);
}
.r8c-card--dark .r8c-card__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform .6s ease;
}
.r8c-card--dark:hover .r8c-card__bg { transform: scale(1.08); }
.r8c-card--dark .r8c-card__body {
  position: relative;
  z-index: 2;
  padding: 20px;
  width: 100%;
}
.r8c-card--dark .r8c-card__tit { color: #fff; margin-bottom: 14px; }

/* 悬停浮出内容层 */
.r8c-card__hover {
  position: absolute;
  inset: 0;
  z-index: 3;
  background: rgba(0, 82, 217, .94);
  padding: 24px 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--r8c-ease);
  color: #fff;
}
.r8c-card:hover .r8c-card__hover { opacity: 1; visibility: visible; }

/* 网格 */
.r8c-grid { display: grid; gap: 24px; }
.r8c-grid--2 { grid-template-columns: repeat(2, 1fr); }
.r8c-grid--3 { grid-template-columns: repeat(3, 1fr); }
.r8c-grid--4 { grid-template-columns: repeat(4, 1fr); }
.r8c-grid--5 { grid-template-columns: repeat(5, 1fr); }

/* --------------------------------------------------------------------------
   9. 新闻 / 文章列表
   -------------------------------------------------------------------------- */
.r8c-news { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.r8c-news__item {
  display: flex;
  width: 100%;                /* 放进 .r8c-grid 时需撑满，否则被挤压 */
  background: #fff;
  border-radius: var(--r8c-radius-lg);
  overflow: hidden;
  box-shadow: var(--r8c-shadow-soft);
  transition: var(--r8c-ease);
}
.r8c-news__item:hover { transform: translateY(-4px); box-shadow: var(--r8c-shadow-hover); }
.r8c-news__thumb {
  position: relative;
  width: 40%;
  min-height: 130px;
  overflow: hidden;
  flex-shrink: 0;
}
.r8c-news__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 2s ease; }
.r8c-news__item:hover .r8c-news__thumb img { transform: scale(1.1); }
.r8c-news__date {
  position: absolute;
  left: 0;
  bottom: 0;
  background: var(--r8c-primary);
  color: #fff;
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 0 var(--r8c-radius-sm) 0 0;
}
.r8c-news__body { padding: 16px 20px; display: flex; flex-direction: column; justify-content: space-between; }
.r8c-news__tit {
  font-size: 16px;
  color: var(--r8c-title);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.r8c-news__item:hover .r8c-news__tit { color: var(--r8c-blue); }
.r8c-news__meta { font-size: 13px; color: #6c707b; margin-top: 10px; } /* 原 #b4bccd 白底仅 1.91:1 */

/* 大图头条 */
.r8c-feature {
  position: relative;
  border-radius: var(--r8c-radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background-size: cover;
  background-position: center;
}
.r8c-feature__tit {
  color: #fff;
  font-size: 28px;
  font-weight: 600;
  line-height: 1.6;
  text-align: center;
  max-width: 620px;
}

/* --------------------------------------------------------------------------
   10. 标签 / 小组件
   -------------------------------------------------------------------------- */
.r8c-tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 13px;
  border-radius: var(--r8c-radius-sm);
  background: rgba(41, 130, 229, .1);
  color: var(--r8c-blue);
  transition: var(--r8c-ease);
}
.r8c-tag:hover { background: var(--r8c-blue); color: #fff; }
.r8c-tag--solid { background: var(--r8c-primary); color: #fff; }

.r8c-divider { height: 1px; background: #e8ecf3; border: 0; margin: 0; }

/* 数字滚动条 */
.r8c-count { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.r8c-count__num {
  font-size: 52px;
  font-weight: 700;
  color: var(--r8c-blue);
  line-height: 1.1;
}
.r8c-dark .r8c-count__num { color: #fff; }
.r8c-count__label { font-size: 15px; color: var(--r8c-body); margin-top: 8px; }
.r8c-dark .r8c-count__label { color: rgba(255,255,255,.75); }

/* Logo 墙 */
.r8c-logos { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.r8c-logo {
  height: 74px;
  background: #fff;
  border-radius: var(--r8c-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  transition: var(--r8c-ease);
}
.r8c-logo img { max-height: 100%; filter: grayscale(1); opacity: .6; transition: var(--r8c-ease); }
.r8c-logo:hover { box-shadow: var(--r8c-shadow); transform: translateY(-3px); }
.r8c-logo:hover img { filter: none; opacity: 1; }

/* --------------------------------------------------------------------------
   11. 悬浮回顶按钮 —— 站点标志性的蓝色圆形球
   -------------------------------------------------------------------------- */
.r8c-top-btn {
  position: fixed;
  right: 40px;
  bottom: 60px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--r8c-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(41, 130, 229, .4);
  cursor: pointer;
  z-index: 999;
  border: 0;
  transition: var(--r8c-ease);
}
.r8c-top-btn:hover { background: var(--r8c-primary); transform: translateY(-3px); }

/* 侧边悬浮球装饰 */
.r8c-orb {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #6aa8ff, var(--r8c-primary) 70%);
  box-shadow: 0 10px 30px rgba(0, 82, 217, .35);
  pointer-events: none;
  z-index: 0;
}

/* --------------------------------------------------------------------------
   12. 动画（进场）
   -------------------------------------------------------------------------- */
.r8c-fade-up { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.r8c-fade-up.is-in { opacity: 1; transform: translateY(0); }
.r8c-fade-up-d1 { transition-delay: .1s; }
.r8c-fade-up-d2 { transition-delay: .2s; }
.r8c-fade-up-d3 { transition-delay: .3s; }
.r8c-fade-up-d4 { transition-delay: .4s; }

/* 入场遮罩上滑 */
.r8c-mask { position: relative; overflow: hidden; }
.r8c-mask::after {
  content: '';
  position: absolute;
  inset: 0;
  background: #fff;
  transform-origin: bottom;
  animation: r8cMask 1s ease forwards;
  animation-delay: .2s;
}
@keyframes r8cMask { to { transform: scaleY(0); } }

/* 悬浮光晕 */
.r8c-glow::before {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(41,130,229,.16), transparent 70%);
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   13. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1200px) {
  .r8c-container { max-width: 100%; padding: 0 20px; }
}

@media (max-width: 991px) {
  :root {
    --r8c-fs-h1: 38px;
    --r8c-lh-h1: 52px;
    --r8c-fs-h2: 28px;
    --r8c-lh-h2: 42px;
    --r8c-section-pad: 70px;
    --r8c-skew: 60px;
    --r8c-nav-h: 70px;
  }
  .r8c-bg-text { font-size: 120px; bottom: 60px; right: -120px; }
  .r8c-grid--4,
  .r8c-grid--5 { grid-template-columns: repeat(2, 1fr); }
  .r8c-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .r8c-news { grid-template-columns: 1fr; }
  .r8c-stats,
  .r8c-count { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .r8c-logos { grid-template-columns: repeat(3, 1fr); }
  .r8c-banner { min-height: 560px; }
  .r8c-nav__menu { display: none; }
}

@media (max-width: 767px) {
  :root { --r8c-fs-h1: 28px; --r8c-lh-h1: 40px; --r8c-fs-h2: 24px; --r8c-lh-h2: 36px; }
  .r8c-grid--2,
  .r8c-grid--3,
  .r8c-grid--4,
  .r8c-grid--5 { grid-template-columns: 1fr; }
  .r8c-banner__desc { font-size: 15px; line-height: 26px; }
  .r8c-banner__btns { flex-direction: column; gap: 14px; }
  .r8c-stats,
  .r8c-count { grid-template-columns: 1fr; }
  .r8c-logos { grid-template-columns: repeat(2, 1fr); }
  .r8c-top-btn { right: 16px; bottom: 30px; width: 42px; height: 42px; }
  .r8c-bg-text { display: none; }
}


/* ==========================================================================
   14. 站点切换条（多页面架构新增）
   集团站 / 服务站顶部的平级切换，恒定在最顶部
   ========================================================================== */
.r8c-sitebar {
  position: relative;
  z-index: 101;
  background: #0b0a16;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  font-size: 13px;
}
/* 首页：sitebar + nav 叠在 hero 大图之上（通栏，不占文档流高度） */
.r8c-site--overlay-mode .r8c-sitebar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
}
.r8c-site--overlay-mode .r8c-nav {
  position: fixed;            /* 全程 fixed：滚动后 JS 换成 --solid 时不回流、不跳动 */
  top: 36px;
  left: 0;
  right: 0;
  transition: top .3s ease, background-color .3s ease, box-shadow .3s ease;
}
/* 首页滚动 >80px：导航浮到视口顶并转为玻璃实心（叠在 hero/内容上） */
.r8c-site--overlay-mode .r8c-nav.r8c-nav--solid {
  top: 0;
}
.r8c-sitebar__inner {
  max-width: var(--r8c-container);
  margin: 0 auto;
  padding: 0 15px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 2px;
}
.r8c-sitebar__item {
  color: rgba(255, 255, 255, .55);
  padding: 4px 14px;
  border-radius: var(--r8c-radius-sm);
  transition: var(--r8c-ease);
}
.r8c-sitebar__item:hover { color: #fff; background: rgba(255, 255, 255, .08); }
.r8c-sitebar__item.is-on {
  color: #fff;
  background: var(--r8c-primary);
}
.r8c-sitebar__sep { color: rgba(255, 255, 255, .25); padding: 0 2px; }

/* 集团站 / 服务站品牌色微调 */
.r8c-site--group   .r8c-sitebar__item.is-on { background: #26356b; }
.r8c-site--service .r8c-sitebar__item.is-on { background: var(--r8c-primary); }


/* ==========================================================================
   15. 内页骨架（多页面架构新增）
   内页统一结构：sitebar → nav--solid → subbanner → breadcrumb → 内容 → footer
   注意：内页**不要**加载首页那段导航滚动切换 JS，否则导航变透明底白字会隐身
   ========================================================================== */

/* 15.1 内页 banner（2026-10-14 重构：消除「深蓝 banner / 浅灰面包屑条 /
   内容」三明治硬切——底部渐变收口；products 页用 --fuse-dark 直接融进
   深色内容区。四修：左上角面包屑描边水印撤除，banner 只留标题+描述） */
.r8c-subbanner {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}
.r8c-subbanner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15,13,29,.92), rgba(0,82,217,.72));
}
/* 有底图时减弱压暗层：左侧保文字可读，右侧让图透出来 */
.r8c-subbanner--img::before {
  background: linear-gradient(120deg, rgba(15,13,29,.92) 0%, rgba(15,13,29,.70) 42%, rgba(0,82,217,.40) 100%);
}
/* 底部渐变收口： banner 自然沉下去，不再是直角硬切 */
.r8c-subbanner::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 150px;
  background: linear-gradient(to bottom, rgba(10, 16, 32, 0), rgba(10, 16, 32, .55));
  pointer-events: none;
  z-index: 1;
}
/* 深色内容区融合：底部直接融进 --r8c-ink，banner 与深色区无缝一体 */
.r8c-subbanner--fuse-dark::after {
  background: linear-gradient(to bottom, rgba(15, 13, 29, 0), #0f0d1d 94%);
}
.r8c-subbanner__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--r8c-container);
  margin: 0 auto;
  padding: 60px 15px;
}
/* 面包屑描边水印已撤（2026-10-14 四修）：左上角「首页 / 产品超市」
   式描边大水印与下方大标题内容重复，用户判定喧宾夺主；HTML 不再
   渲染 .r8c-subbanner__crumb，相关样式一并删除。
   生成器 common.py subbanner() 的 crumb 参数保留不渲染，可回滚。 */
.r8c-subbanner__tit {
  position: relative;
  font-size: 40px;
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
  margin-bottom: 12px;
  padding-bottom: 20px;
}
/* 标题下的渐变短线：品牌蓝→亮蓝，收住标题区 */
.r8c-subbanner__tit::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--r8c-blue-light), #7cc4ff);
}
.r8c-subbanner__desc {
  font-size: 17px;
  line-height: 30px;
  color: rgba(255, 255, 255, .8);
  max-width: 720px;
}
.r8c-subbanner .r8c-bg-text { bottom: 30px; right: -160px; font-size: 180px; }

/* 15.3 内页页头标题组 */
.r8c-page-head { position: relative; margin-bottom: 46px; }
.r8c-page-head .r8c-sub {
  display: block;
  font-size: var(--r8c-fs-sub);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--r8c-blue);
  margin-bottom: 10px;
}
.r8c-page-head .r8c-h2 { padding-bottom: 22px; position: relative; }
.r8c-page-head .r8c-h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, var(--r8c-blue) 0%, rgba(41,130,229,0) 100%);
}
.r8c-page-head--center { text-align: center; }
.r8c-page-head--center .r8c-h2::after {
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(to right, rgba(41,130,229,0), var(--r8c-blue) 50%, rgba(41,130,229,0));
}
.r8c-page-head__desc {
  margin-top: 20px;
  font-size: 16px;
  line-height: 30px;
  color: var(--r8c-body);
  max-width: 860px;
}
.r8c-page-head--center .r8c-page-head__desc { margin-left: auto; margin-right: auto; }
.r8c-dark .r8c-page-head .r8c-sub,
.r8c-dark .r8c-page-head__desc { color: rgba(255,255,255,.78); }
.r8c-dark .r8c-page-head .r8c-h2 { color: #fff; }

/* 15.4 左右分栏图文 */
.r8c-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.r8c-split--wide-left  { grid-template-columns: 1.15fr .85fr; }
.r8c-split--wide-right { grid-template-columns: .85fr 1.15fr; }
.r8c-split--rev { direction: rtl; }
.r8c-split--rev > * { direction: ltr; }
.r8c-split + .r8c-split { margin-top: 72px; }

.r8c-split__media {
  position: relative;
  min-height: 340px;
  border-radius: var(--r8c-radius);
  overflow: hidden;
  background: linear-gradient(160deg, #123, #0f2d5c);
  background-size: cover;
  background-position: center;
  box-shadow: var(--r8c-shadow);
}
/* 有底图时压一层暗色，保证角标与整体色调统一（渐变仍在底层兜底） */
.r8c-split__media--img::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(160deg, rgba(10,20,50,.34), rgba(10,20,50,.20));
}
.r8c-split__badge {
  position: absolute;
  left: 20px;
  top: 20px;
  z-index: 2;
  background: rgba(0, 82, 217, .92);
  color: #fff;
  font-size: 13px;
  padding: 5px 14px;
  border-radius: var(--r8c-radius-sm);
}
.r8c-split__body .r8c-h3 { margin-bottom: 16px; }
.r8c-split__body .r8c-text { margin-bottom: 20px; }
.r8c-split__tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

/* 15.6 CMS 图片位：运营上传的图片绝对定位铺满媒体区，object-fit 裁剪；
   角标/光斑在 DOM 中后于 img，天然叠在上层；无上传图时该 img 不存在，外观不变。 */
.r8c-media-img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 15.6b 配图动效：Ken Burns 缓慢缩放+平移，让静态照片有「呼吸感」（纯 CSS，
   不依赖 JS）；尊重系统「减少动态效果」偏好。 */
.r8c-media-img {
  animation: r8c-kenburns 26s ease-in-out infinite alternate;
}
@keyframes r8c-kenburns {
  from { transform: scale(1) translate(0%, 0%); }
  to   { transform: scale(1.1) translate(-1.6%, -1.2%); }
}
@media (prefers-reduced-motion: reduce) {
  .r8c-media-img { animation: none; }
}

/* 15.6c 底图动效：banner / subbanner 的 background-image 无法用 transform，
   改用 background-size 缓慢推近（cover 之上做 103%→110% 的呼吸），制造纵深。
   只在「运营确实传了图」的页面上生效（.r8c-subbanner--img 由 content 有图时才加），
   纯渐变页保持原样不动。 */
.r8c-banner {
  animation: r8c-bgzoom 38s ease-in-out infinite alternate;
}
.r8c-subbanner--img {
  animation: r8c-bgzoom 32s ease-in-out infinite alternate;
}
@keyframes r8c-bgzoom {
  from { background-size: cover, cover, cover; background-position: center, center, center; }
  to   { background-size: 110% 110%, 110% 110%, 110% 110%; background-position: center, center, center; }
}
@media (prefers-reduced-motion: reduce) {
  .r8c-banner,
  .r8c-subbanner--img { animation: none; }
}

/* 15.6d 卡片底图 Ken Burns：与 hover 的 scale(1.08) 叠加——动画走 background-position
   位移（cover 下等价于轻微平移推近），hover 的 transform 缩放独立生效，互不覆盖。 */
.r8c-card--dark .r8c-card__bg {
  animation: r8c-carddrift 30s ease-in-out infinite alternate;
}
@keyframes r8c-carddrift {
  from { background-position: 50% 50%; }
  to   { background-position: 50% 42%; }
}
@media (prefers-reduced-motion: reduce) {
  .r8c-card--dark .r8c-card__bg { animation: none; }
}

/* 15.5 参数规格表 */
.r8c-spec {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid #e4e9f2;
  font-size: 15px;
  background: #fff;
}
.r8c-spec caption {
  text-align: left;
  font-size: 18px;
  font-weight: 600;
  color: var(--r8c-title);
  padding: 0 0 14px;
}
.r8c-spec th,
.r8c-spec td {
  padding: 14px 18px;
  border: 1px solid #e4e9f2;
  text-align: left;
  vertical-align: top;
  line-height: 26px;
}
.r8c-spec th {
  width: 190px;
  background: var(--r8c-bg-soft);
  color: var(--r8c-title);
  font-weight: 500;
}
.r8c-spec td { color: var(--r8c-body); }
.r8c-spec tr:hover td { background: #fafcff; }
/* key-value 紧凑版（非表格） */
.r8c-spec-list { border-top: 1px solid #e4e9f2; }
.r8c-spec-list__row {
  display: grid;
  grid-template-columns: 190px 1fr;
  border-bottom: 1px solid #e4e9f2;
}
.r8c-spec-list__row:nth-child(odd) { background: #fafcff; }
.r8c-spec-list__k {
  padding: 14px 18px;
  font-weight: 500;
  color: var(--r8c-title);
  border-right: 1px solid #e4e9f2;
}
.r8c-spec-list__v { padding: 14px 18px; color: var(--r8c-body); line-height: 26px; }

/* 15.6 分页 */
.r8c-pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 56px;
  flex-wrap: wrap;
}
.r8c-pager__item {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--r8c-title);
  background: #fff;
  border: 1px solid #e4e9f2;
  transition: var(--r8c-ease);
}
.r8c-pager__item:hover { border-color: var(--r8c-blue); color: var(--r8c-blue); }
.r8c-pager__item.is-on {
  background: var(--r8c-primary);
  border-color: var(--r8c-primary);
  color: #fff;
}
.r8c-pager__item.is-off { color: #c3cbd9; cursor: not-allowed; }
.r8c-pager__dots { color: var(--r8c-body); padding: 0 4px; }

/* 15.7 建设中 / 空状态 */
.r8c-empty {
  padding: 90px 20px;
  text-align: center;
  background: var(--r8c-bg-soft);
  border: 1px dashed #d3dced;
  border-radius: var(--r8c-radius);
}
.r8c-empty__icon {
  width: 62px;
  height: 62px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: rgba(41, 130, 229, .1);
  color: var(--r8c-blue);
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.r8c-empty__tit {
  font-size: 20px;
  font-weight: 600;
  color: var(--r8c-title);
  margin-bottom: 10px;
}
.r8c-empty__desc { font-size: 15px; color: var(--r8c-body); line-height: 26px; margin-bottom: 26px; }

/* 15.8 正文排版（政策速递 / 集团动态长文） */
.r8c-article {
  font-size: 16px;
  line-height: 32px;
  color: var(--r8c-body);
}
.r8c-article h2 {
  font-size: 26px;
  font-weight: 600;
  line-height: 40px;
  color: var(--r8c-title);
  margin: 40px 0 18px;
  padding-left: 14px;
  border-left: 4px solid var(--r8c-primary);
}
.r8c-article h3 {
  font-size: 19px;
  font-weight: 600;
  line-height: 32px;
  color: var(--r8c-title);
  margin: 30px 0 14px;
}
.r8c-article p { margin-bottom: 18px; }
.r8c-article ul { margin: 0 0 18px; padding-left: 4px; list-style: disc; }
.r8c-article li { margin-bottom: 8px; padding-left: 6px; }
.r8c-article a { color: var(--r8c-blue); }
.r8c-article a:hover { color: var(--r8c-primary); }
.r8c-article img { border-radius: var(--r8c-radius); margin: 12px 0; }
.r8c-article blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  background: var(--r8c-bg-soft);
  border-left: 4px solid var(--r8c-blue);
  color: var(--r8c-title);
}

/* 15.9 页面工具条（返回/咨询 CTA） */
.r8c-page-cta {
  margin-top: 64px;
  padding: 44px;
  border-radius: var(--r8c-radius);
  background: linear-gradient(120deg, #0b2a6b, #0052d9);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.r8c-page-cta__tit { font-size: 24px; font-weight: 600; margin-bottom: 8px; }
.r8c-page-cta__desc { font-size: 15px; color: rgba(255, 255, 255, .8); }
.r8c-page-cta .r8c-btn { background: #fff; color: var(--r8c-primary); }
.r8c-page-cta .r8c-btn:hover { background: #fff; color: var(--r8c-primary-hover); }

/* 15.10 相关推荐 */
.r8c-related__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 12px;
}
.r8c-related__more { font-size: 14px; color: var(--r8c-blue); }
.r8c-related__more:hover { color: var(--r8c-primary); }


/* ==========================================================================
   16. 移动端导航（汉堡 + 侧边抽屉）
   ========================================================================== */
.r8c-nav__toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  cursor: pointer;
  position: relative;
  padding: 0;
  z-index: 103;
}
.r8c-nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  margin: 5px auto;
  transition: var(--r8c-ease);
}
.r8c-nav--solid .r8c-nav__toggle span { background: var(--r8c-title); }
.r8c-nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.r8c-nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.r8c-nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 抽屉遮罩 */
.r8c-drawer__overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 13, 29, .55);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: var(--r8c-ease);
}
.r8c-drawer__overlay.is-open { opacity: 1; visibility: visible; }

/* 抽屉本体 */
.r8c-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 320px;
  max-width: 86vw;
  background: #fff;
  z-index: 201;
  transform: translateX(100%);
  transition: transform .3s ease;
  overflow-y: auto;
  box-shadow: -8px 0 30px rgba(0, 0, 0, .12);
}
.r8c-drawer.is-open { transform: translateX(0); }

.r8c-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid #e8ecf3;
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 2;
}
.r8c-drawer__title { font-size: 16px; font-weight: 600; color: var(--r8c-title); }
.r8c-drawer__close {
  width: 34px;
  height: 34px;
  border: 0;
  background: transparent;
  font-size: 22px;
  color: var(--r8c-body);
  cursor: pointer;
  line-height: 1;
}
.r8c-drawer__close:hover { color: var(--r8c-title); }
.r8c-drawer__body { padding: 8px 0 30px; }

.r8c-drawer__item { border-bottom: 1px solid #f0f3f8; }
.r8c-drawer__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
  font-size: 15px;
  color: var(--r8c-title);
}
.r8c-drawer__link.is-on { color: var(--r8c-blue); font-weight: 500; }
.r8c-drawer__link .r8c-arrow {
  font-size: 11px;
  color: #c3cbd9;
  transition: var(--r8c-ease);
  margin-left: 8px;
}
/* 抽屉内二级菜单：默认收起 */
.r8c-drawer__sub {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
  background: var(--r8c-bg-soft);
}
.r8c-drawer__item.is-open .r8c-drawer__sub { max-height: 640px; }
.r8c-drawer__item.is-open .r8c-drawer__link .r8c-arrow { transform: rotate(90deg); }
.r8c-drawer__sub a {
  display: block;
  padding: 11px 20px 11px 34px;
  font-size: 14px;
  color: var(--r8c-body);
  border-left: 3px solid transparent;
}
.r8c-drawer__sub a:hover { color: var(--r8c-blue); border-left-color: var(--r8c-blue); background: #fff; }
.r8c-drawer__sub-title {
  padding: 12px 20px 6px 34px;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #696f7b;   /* 原 #a8b2c4 白底仅 2.14:1 */
}
.r8c-drawer__foot { padding: 22px 20px 0; }
.r8c-drawer__foot .r8c-btn { width: 100%; }

/* 导航：按站点各自「按需收起」，而不是一刀切。
   服务站 8 项（含「数据工厂·模型工厂」9 字）横排需约 1130px，而 1200 视口容器只有 1160px
   → 必须 <1200px 收起为汉堡；集团站仅 6 项、标签更短，只需约 810px，992px 起就放得下
   → 沿用原来的 991px 断点即可。
   ⚠️ 必须放在 `.r8c-nav__toggle{display:none}` 基准规则**之后**：媒体查询不增加优先级，
   同优先级下靠后的规则胜出。抽屉里已完整承载全部导航项与二级项。 */
@media (max-width: 1199px) {
  .r8c-site--service .r8c-nav__menu { display: none; }
  .r8c-site--service .r8c-nav__toggle { display: block; }
}

@media (max-width: 991px) {
  .r8c-nav__toggle { display: block; }
  /* 桌面菜单保持隐藏，改由抽屉承载 */
  .r8c-sitebar__inner { justify-content: center; }
}

@media (max-width: 767px) {
  .r8c-subbanner { min-height: 240px; }
  .r8c-subbanner__tit { font-size: 26px; }
  .r8c-subbanner__desc { font-size: 15px; line-height: 26px; }
  .r8c-split { grid-template-columns: 1fr; gap: 28px; }
  .r8c-split__media { min-height: 220px; }
  .r8c-spec th,
  .r8c-spec-list__k { width: 120px; }
  .r8c-spec th,
  .r8c-spec td { padding: 11px 12px; font-size: 14px; }
  .r8c-spec-list__row { grid-template-columns: 110px 1fr; }
  .r8c-page-cta { padding: 28px; }
  .r8c-page-cta__tit { font-size: 20px; }
  .r8c-subbanner { min-height: 300px; }
  .r8c-subbanner__inner { padding: 48px 15px; }
  .r8c-subbanner__tit { font-size: 30px; }
  .r8c-subbanner__desc { font-size: 15px; }
  .r8c-subbanner::after { height: 110px; }
  .r8c-article h2 { font-size: 21px; }
}


/* ==========================================================================
   17. 交互动效组件（原生 JS 驱动，零依赖）
   配套脚本：assets/r8c-motion.js
   ========================================================================== */

/* 17.1 滚动进场 --------------------------------------------------------- */
/* 横向进场的位移量会顶出视口（窄屏两侧留白不足 46px）→ 窄屏统一改纵向。
   html 上的 overflow-x 是兜底，防止任何未进场元素的位移被算进 scrollWidth。 */
html { overflow-x: hidden; }

/* 隐藏态仅在 html.r8c-motion-ready 下生效：脚本没加载时内容照常可见 */
html { overflow-x: hidden; overflow-x: clip; }
.r8c-motion-ready .r8c-reveal {
  opacity: 0;
  will-change: opacity, transform;
  transition:
    opacity var(--rv-dur, 700ms) cubic-bezier(.22, .61, .36, 1),
    transform var(--rv-dur, 700ms) cubic-bezier(.22, .61, .36, 1);
}
.r8c-motion-ready .r8c-reveal[data-reveal="up"]    { transform: translateY(38px); }
.r8c-motion-ready .r8c-reveal[data-reveal="down"]  { transform: translateY(-38px); }
.r8c-motion-ready .r8c-reveal[data-reveal="left"]  { transform: translateX(-46px); }
.r8c-motion-ready .r8c-reveal[data-reveal="right"] { transform: translateX(46px); }
.r8c-motion-ready .r8c-reveal[data-reveal="zoom"]  { transform: scale(.92); }
.r8c-motion-ready .r8c-reveal[data-reveal="fade"]  { transform: none; }
.r8c-motion-ready .r8c-reveal.is-in {
  opacity: 1;
  transform: none;
}
/* 无 data-reveal 时默认上移 */
.r8c-motion-ready .r8c-reveal:not([data-reveal]) { transform: translateY(38px); }

/* 17.2 数字滚动 --------------------------------------------------------- */
.r8c-num {
  display: inline-block;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}
/* 占位符承载元素（原 {{...}} 文本存 data-ph，便于后续替换真实数据） */
.r8c-ph { position: relative; }

/* 17.3 Hero 首屏入场 + 悬浮球 ------------------------------------------- */
.r8c-banner__inner > .r8c-banner__title,
.r8c-banner__inner > .r8c-banner__desc,
.r8c-banner__inner > .r8c-banner__btns,
.r8c-banner__inner > .r8c-stats {
  animation: r8cHeroIn .9s cubic-bezier(.22, .61, .36, 1) both;
}
.r8c-banner__title { animation-delay: .08s; }
.r8c-banner__desc  { animation-delay: .22s; }
.r8c-banner__btns  { animation-delay: .36s; }
.r8c-banner .r8c-stats { animation-delay: .50s; }
@keyframes r8cHeroIn {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: none; }
}

/* 悬浮光球：用独立 translate 属性做浮动，与 JS 视差的 transform 不冲突 */
.r8c-orb { animation: r8cOrbFloat 8s ease-in-out infinite; }
.r8c-orb--b { animation-duration: 11.5s; animation-delay: -3.2s; }
@keyframes r8cOrbFloat {
  0%, 100% { translate: 0 0; }
  50%      { translate: 0 -20px; }
}

/* 巨型镂空背景字：叠加 JS 视差位移（保留 -30deg 倾斜） */
.r8c-bg-text {
  transform: translate3d(0, var(--py, 0px), 0) rotate(-30deg);
}

/* 首屏滚动提示 */
.r8c-scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  z-index: 3;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, .65);
  font-size: 12px;
  letter-spacing: 1px;
  pointer-events: none;
}
.r8c-scroll-hint i {
  display: block;
  width: 1px;
  height: 34px;
  background: linear-gradient(to bottom, rgba(255,255,255,.7), transparent);
  animation: r8cHint 1.9s ease-in-out infinite;
  transform-origin: top;
}
@keyframes r8cHint {
  0%   { transform: scaleY(.2); opacity: 0; }
  40%  { transform: scaleY(1);  opacity: 1; }
  100% { transform: scaleY(.2); opacity: 0; }
}

/* 深色底（hero / 深色区块）里的文字箭头链接：品牌深蓝压在近黑背景上对比度不足
   （#0052d9 on #0f0d1d ≈ 2.3:1），换成亮蓝 ≈ 6:1 */
.r8c-banner .r8c-arrow-link,
.r8c-dark .r8c-arrow-link { color: var(--r8c-blue-light); }
.r8c-banner .r8c-arrow-link:hover,
.r8c-dark .r8c-arrow-link:hover { color: #fff; }
/* 深色区里的 .r8c-card 只改了阴影，卡片本身仍是白底（见 1686 行）。
   上面两条按 class 匹配会一并命中白卡片里的链接 —— 白底上 blue-light 只有
   3.38:1，hover 更是白底白字直接消失。这里把卡片内的链接拉回品牌深蓝。 */
.r8c-dark .r8c-card .r8c-arrow-link { color: var(--r8c-primary); }
.r8c-dark .r8c-card .r8c-arrow-link:hover { color: var(--r8c-primary-hover); }

/* 17.4 卡片增强：光带扫过 + 图标微动 ------------------------------------ */.r8c-card { overflow: hidden; }
.r8c-card::after,
.r8c-card--dark::after {
  content: '';
  position: absolute;
  top: 0;
  left: -130%;
  width: 55%;
  height: 100%;
  transform: skewX(-18deg);
  transition: left .75s cubic-bezier(.22, .61, .36, 1);
  pointer-events: none;
  z-index: 4;
}
.r8c-card::after      { background: linear-gradient(100deg, transparent, rgba(41, 130, 229, .12), transparent); }
.r8c-card--dark::after{ background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .18), transparent); }
.r8c-card:hover::after,
.r8c-card--dark:hover::after { left: 130%; }

.r8c-card__icon {
  transition: transform .4s cubic-bezier(.22, .61, .36, 1),
              background-color .3s ease, color .3s ease;
}
.r8c-card:hover .r8c-card__icon {
  transform: rotate(-8deg) scale(1.06);
  background-color: var(--r8c-primary);
  color: #fff;
}

/* 深色区里的白色卡片：签名式双击投影的「左上反投影」是 rgba(255,255,255,1)，
   那是给浅底拟态用的 —— 压在深色底上会变成一圈白色晕影（像抹开的污渍）。
   深色区改为单向右下黑色投影。 */
.r8c-dark .r8c-card {
  box-shadow: 10px 14px 34px 0 rgba(0, 0, 0, .45);
}
.r8c-dark .r8c-card:hover {
  box-shadow: 0 18px 44px rgba(0, 0, 0, .55);
}

/* 17.5 Tab 切换 --------------------------------------------------------- */
.r8c-tabs__nav {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid #e4e9f2;
  margin-bottom: 34px;
}
.r8c-tabs__btn {
  position: relative;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: 16px;
  color: var(--r8c-body);
  padding: 14px 24px;
  cursor: pointer;
  transition: color .3s ease, background-color .3s ease;
}
.r8c-tabs__btn:hover { color: var(--r8c-blue); background: rgba(41, 130, 229, .06); }
.r8c-tabs__btn.is-on { color: var(--r8c-primary); font-weight: 600; }
.r8c-tabs__btn:focus-visible { outline: 2px solid var(--r8c-blue); outline-offset: -2px; }
.r8c-tabs__ink {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 0;
  background: var(--r8c-primary);
  transition: transform .38s cubic-bezier(.22, .61, .36, 1),
              width .38s cubic-bezier(.22, .61, .36, 1);
}
.r8c-tabs__panel { display: none; }
.r8c-tabs__panel.is-on { display: block; animation: r8cTabIn .52s cubic-bezier(.22, .61, .36, 1) both; }
@keyframes r8cTabIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}
.r8c-dark .r8c-tabs__nav { border-bottom-color: rgba(255, 255, 255, .16); }
.r8c-dark .r8c-tabs__btn { color: rgba(255, 255, 255, .68); }
.r8c-dark .r8c-tabs__btn:hover { color: #fff; background: rgba(255, 255, 255, .07); }
.r8c-dark .r8c-tabs__btn.is-on { color: #fff; }
.r8c-dark .r8c-tabs__ink { background: var(--r8c-blue-light); }

/* 17.6 横向时间轴轮播 --------------------------------------------------- */
.r8c-tl__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}
.r8c-tl__nav { display: flex; gap: 10px; }
.r8c-tl__hint { font-size: 14px; color: var(--r8c-body); }
.r8c-dark .r8c-tl__hint { color: rgba(255, 255, 255, .58); }
.r8c-tl__arrow {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  line-height: 1;
  font-family: inherit;
  color: var(--r8c-title);
  background: #fff;
  border: 1px solid #dbe3f0;
  border-radius: var(--r8c-radius);
  cursor: pointer;
  transition: var(--r8c-ease);
}
.r8c-tl__arrow:hover:not([disabled]) {
  background: var(--r8c-primary);
  border-color: var(--r8c-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--r8c-shadow-hover);
}
.r8c-tl__arrow[disabled] { opacity: .32; cursor: not-allowed; }
.r8c-dark .r8c-tl__arrow:focus-visible { outline-color: var(--r8c-blue-light); }
.r8c-tl__arrow:focus-visible { outline: 2px solid var(--r8c-blue); outline-offset: 2px; }
/* 时间轴轨道本身可聚焦（键盘方向键浏览），给个不刺眼的焦点圈 */
.r8c-tl__track:focus-visible { outline: 2px solid var(--r8c-blue); outline-offset: 4px; }

.r8c-tl__track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 6px 2px 8px;
  cursor: grab;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.r8c-tl__track::-webkit-scrollbar { display: none; }
.r8c-tl__track.is-dragging { cursor: grabbing; scroll-snap-type: none; scroll-behavior: auto; }
.r8c-tl__track.is-dragging .r8c-tl__item { transition: none; }

.r8c-tl__item {
  position: relative;
  flex: 0 0 288px;
  scroll-snap-align: start;
  background: #fff;
  border-radius: var(--r8c-radius);
  padding: 30px 26px 28px;
  box-shadow: var(--r8c-shadow-dual);
  transition: transform .35s cubic-bezier(.22, .61, .36, 1), box-shadow .35s ease;
}
.r8c-tl__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--r8c-primary), rgba(41, 130, 229, 0));
  border-radius: var(--r8c-radius) var(--r8c-radius) 0 0;
}
/* 卡片之间的连接段 —— 让一排卡片读起来是一条时间轴 */
.r8c-tl__item::after {
  content: '';
  position: absolute;
  right: -24px;
  top: 1px;
  width: 24px;
  height: 3px;
  background: linear-gradient(90deg, rgba(41, 130, 229, .35), rgba(41, 130, 229, .1));
}
.r8c-tl__item:last-child::after { display: none; }
.r8c-tl__item:hover { transform: translateY(-6px); box-shadow: var(--r8c-shadow-hover); }
.r8c-tl__year {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--r8c-blue);
  margin-bottom: 14px;
  letter-spacing: -.5px;
}
.r8c-tl__tit { font-size: 17px; font-weight: 600; color: var(--r8c-title); margin-bottom: 10px; }
.r8c-tl__desc { font-size: 14px; line-height: 26px; color: var(--r8c-body); }

/* 深色区内的轮播 */
.r8c-dark .r8c-tl__arrow { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .18); color: #fff; }
.r8c-dark .r8c-tl__arrow:hover:not([disabled]) { background: var(--r8c-primary); border-color: var(--r8c-primary); }
.r8c-dark .r8c-tl__item {
  background: rgba(255, 255, 255, .055);
  border: 1px solid rgba(255, 255, 255, .1);
  box-shadow: none;
}
.r8c-dark .r8c-tl__item:hover {
  background: rgba(255, 255, 255, .085);
  border-color: rgba(41, 130, 229, .55);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .3);
}
.r8c-dark .r8c-tl__item::before { background: linear-gradient(90deg, var(--r8c-blue-light), rgba(24, 142, 244, 0)); }
.r8c-dark .r8c-tl__item::after { background: linear-gradient(90deg, rgba(24, 142, 244, .4), rgba(24, 142, 244, .08)); }
.r8c-dark .r8c-tl__year { color: var(--r8c-blue-light); }
.r8c-dark .r8c-tl__tit  { color: #fff; }
.r8c-dark .r8c-tl__desc { color: rgba(255, 255, 255, .66); }

/* 17.7 展开 / 收起 ------------------------------------------------------ */
.r8c-expand__body {
  position: relative;
  overflow: hidden;
  transition: max-height .5s cubic-bezier(.22, .61, .36, 1);
}
.r8c-expand__body > *:last-child { margin-bottom: 0; }
.r8c-expand.is-closed .r8c-expand__body::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 76px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), var(--r8c-bg));
  pointer-events: none;
}
.r8c-bg-soft .r8c-expand.is-closed .r8c-expand__body::after {
  background: linear-gradient(to bottom, rgba(243, 247, 255, 0), var(--r8c-bg-soft));
}
.r8c-expand__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  padding: 0;
  border: 0;
  background: none;
  font-family: inherit;
  font-size: 14px;
  color: var(--r8c-primary);
  cursor: pointer;
  transition: var(--r8c-ease);
}
.r8c-expand__more:hover { color: var(--r8c-blue); gap: 10px; }
.r8c-expand__more:focus-visible { outline: 2px solid var(--r8c-blue); outline-offset: 3px; border-radius: 2px; }
.r8c-expand__more .r8c-caret { font-size: 12px; transition: transform .35s ease; }
.r8c-expand.is-open .r8c-expand__more .r8c-caret { transform: rotate(180deg); }

/* 17.8 顶部阅读进度条 --------------------------------------------------- */
.r8c-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 1000;
  background: linear-gradient(90deg, var(--r8c-primary), var(--r8c-blue-light));
  pointer-events: none;
}

/* 17.9 回顶按钮显隐（覆盖第 11 节的基础态） ----------------------------- */
.r8c-top-btn {
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
}
.r8c-top-btn.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.r8c-top-btn.is-show:hover { transform: translateY(-3px); }

/* 17.10 走进我们（图文 + 展开） ----------------------------------------- */
.r8c-intro__media {
  position: relative;
  min-height: 380px;
  border-radius: var(--r8c-radius);
  overflow: hidden;
  box-shadow: var(--r8c-shadow);
  background:
    radial-gradient(ellipse 70% 60% at 75% 25%, rgba(24, 142, 244, .34), transparent 68%),
    linear-gradient(158deg, #232a45 0%, #1b2340 50%, #0f0d1d 100%);
  background-color: #161d33;
}
.r8c-intro__media::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 46px 46px;
  pointer-events: none;
}
.r8c-intro__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 24px;
}
.r8c-intro__cell {
  background: #fff;
  border-radius: var(--r8c-radius);
  padding: 16px 18px;
  box-shadow: var(--r8c-shadow-soft);
  transition: var(--r8c-ease);
}
.r8c-intro__cell:hover { transform: translateY(-3px); box-shadow: var(--r8c-shadow-hover); }
.r8c-intro__cell b { display: block; font-size: 15px; color: var(--r8c-title); margin-bottom: 4px; }
.r8c-intro__cell span { font-size: 13px; color: var(--r8c-body); line-height: 22px; }
.r8c-text + .r8c-text { margin-top: 14px; }

/* 17.11 无 JS 降级 ------------------------------------------------------ */
/* html 上没有 .r8c-motion-ready 说明脚本没跑起来，此时不能让交互组件把内容锁死：
   Tab 面板 2/3 会永久不可达、展开按钮点了没反应、轮播箭头是死按钮。 */
html:not(.r8c-motion-ready) .r8c-tabs__panel { display: block; margin-bottom: 34px; }
html:not(.r8c-motion-ready) .r8c-tabs__nav { display: none; }
html:not(.r8c-motion-ready) .r8c-expand__body { max-height: none; overflow: visible; }
html:not(.r8c-motion-ready) .r8c-expand__more { display: none; }
html:not(.r8c-motion-ready) .r8c-tl__nav { display: none; }
html:not(.r8c-motion-ready) .r8c-tl__track { scrollbar-width: thin; cursor: default; }
html:not(.r8c-motion-ready) .r8c-tl__track::-webkit-scrollbar { display: block; height: 6px; }

/* 17.12 降低动效偏好 ---------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .r8c-motion-ready .r8c-reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .r8c-banner__inner > * { animation: none !important; }
  .r8c-orb { animation: none !important; }
  .r8c-scroll-hint i { animation: none !important; }
  .r8c-bg-text { transform: rotate(-30deg) !important; }
  .r8c-tl__track { scroll-behavior: auto; }
  .r8c-tabs__ink { transition: none; }
  .r8c-card::after, .r8c-card--dark::after { display: none; }
}

/* 17.13 响应式 ---------------------------------------------------------- */
/* 视口窄到两侧留白 < 46px 时，横向进场会溢出 → 统一降级为纵向进场 */
@media (max-width: 1279px) {
  .r8c-motion-ready .r8c-reveal[data-reveal="left"],
  .r8c-motion-ready .r8c-reveal[data-reveal="right"] { transform: translateY(34px); }
}

@media (max-width: 991px) {
  .r8c-tl__item { flex: 0 0 260px; }
  .r8c-intro__media { min-height: 300px; }
}
@media (max-width: 767px) {
  .r8c-tabs__nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    gap: 0;
  }
  .r8c-tabs__nav::-webkit-scrollbar { display: none; }
  .r8c-tabs__btn { white-space: nowrap; padding: 12px 16px; font-size: 15px; }
  .r8c-tl__item { flex: 0 0 76vw; padding: 24px 20px; }
  .r8c-tl__item::after { display: none; }
  .r8c-tl__arrow { width: 40px; height: 40px; }
  .r8c-intro__grid { grid-template-columns: 1fr; }
  .r8c-scroll-hint { display: none; }
}


/* ==========================================================================
   18. 科技感升级层（2026-10-13「深空矩阵」）
   原则：只增强、不破坏 r8c 既有签名（直角按钮 / 双击投影 / 斜切 / 品牌蓝）。
   全部 CSS 增强在无 JS 时同样生效；粒子 canvas 由 r8c-motion.js 注入。
   ========================================================================== */

/* 18.1 吸顶导航下的锚点补偿（内页 sticky / 首页 fixed 都不遮目标区块） */
html { scroll-padding-top: 110px; }

/* 18.2 Hero 标题：白 → 青蓝渐变发光字（@supports 兜底：不支持时保持纯白） */
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .r8c-banner__title {
    background-image: linear-gradient(94deg, #ffffff 26%, #cfeaff 58%, #6ee7ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    filter: drop-shadow(0 0 22px rgba(110, 231, 255, .22));
  }
}

/* 18.3 Hero 数据指标：数字加霓虹辉光 */
.r8c-banner .r8c-stat__num { text-shadow: 0 0 26px rgba(110, 231, 255, .32); }
.r8c-banner .r8c-stat__num em { text-shadow: 0 0 18px rgba(24, 142, 244, .55); }

/* 18.4 Hero 主按钮：深色底上的蓝色外辉光（直角签名不动） */
.r8c-banner .r8c-btn {
  box-shadow: 0 0 24px rgba(24, 142, 244, .42), var(--r8c-shadow);
}
.r8c-banner .r8c-btn:hover {
  box-shadow: 0 0 34px rgba(24, 142, 244, .62), 0 10px 28px rgba(0, 82, 217, .45);
}
/* 全域按钮 hover 加一圈科技蓝微光（backgroundColor/borderRadius 不碰） */
.r8c-btn:hover {
  box-shadow: 0 0 0 1px rgba(24, 142, 244, .30), 0 10px 26px rgba(0, 82, 217, .32);
}

/* 18.5 粒子网络画布（r8c-motion.js 注入 .r8c-banner 首位，文字 z-index 2 在其上） */
.r8c-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

/* 18.6 深色区块：顶部中央极光辉光（backgroundColor 保持 #0f0d1d 实测值） */
.r8c-dark {
  background-color: var(--r8c-ink);
  background-image: radial-gradient(ellipse 58% 44% at 50% 0%,
    rgba(24, 142, 244, .13), transparent 72%);
}

/* 18.7 内页 subbanner：网格矩阵 + 极光扫束（与首页 hero 同一语言） */
.r8c-subbanner::before {
  background-image:
    linear-gradient(rgba(110, 231, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 231, 255, .05) 1px, transparent 1px),
    linear-gradient(120deg, rgba(15,13,29,.92), rgba(0,82,217,.72));
  background-size: 52px 52px, 52px 52px, 100% 100%;
}
.r8c-subbanner--img::before {
  background-image:
    linear-gradient(rgba(110, 231, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 231, 255, .045) 1px, transparent 1px),
    linear-gradient(120deg, rgba(15,13,29,.92) 0%, rgba(15,13,29,.70) 42%, rgba(0,82,217,.40) 100%);
  background-size: 52px 52px, 52px 52px, 100% 100%;
}
.r8c-subbanner::after {
  content: '';
  position: absolute;
  top: -25%;
  bottom: -25%;
  left: -45%;
  width: 30%;
  background: linear-gradient(100deg, transparent,
    rgba(110, 231, 255, .06) 42%, rgba(24, 142, 244, .11) 50%,
    rgba(110, 231, 255, .06) 58%, transparent);
  transform: skewX(-14deg);
  animation: r8cAurora 13s ease-in-out infinite;
  pointer-events: none;
}
.r8c-subbanner__tit { text-shadow: 0 0 30px rgba(110, 231, 255, .22); }

/* 18.8 白色功能卡：hover 顶部渐变光带 + 科技蓝辉光（双投影签名保留在常态） */
.r8c-card::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  z-index: 5;
  background: linear-gradient(90deg, #0052d9, #188ef4 55%, #6ee7ff);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .38s cubic-bezier(.22, .61, .36, 1);
}
.r8c-card:hover::before { transform: scaleX(1); }
.r8c-card:hover {
  box-shadow: 0 0 0 1px rgba(24, 142, 244, .26), 0 18px 44px rgba(0, 82, 217, .20);
}
/* 深色图片卡：hover 霓虹描边 */
.r8c-card--dark:hover {
  box-shadow: 0 0 0 1px rgba(110, 231, 255, .34), 0 16px 44px rgba(0, 0, 0, .55);
}

/* 18.9 区块小标签：菱形科技标（深色区白字同样适用） */
.r8c-page-head .r8c-sub::before,
.r8c-sec-title .r8c-sub::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 9px;
  background: linear-gradient(135deg, #0052d9, #6ee7ff);
  transform: rotate(45deg) translateY(-1px);
  box-shadow: 0 0 8px rgba(24, 142, 244, .5);
}

/* 18.10 页脚：顶部渐变霓虹分隔线（border-image，不影响布局高度） */
footer.r8c-dark {
  border-top: 2px solid;
  border-image: linear-gradient(90deg, transparent,
    #0052d9 28%, #6ee7ff 50%, #0052d9 72%, transparent) 1;
}

/* 18.11 阅读进度条发光 + Tab 指示条渐变 + 回顶按钮渐变辉光 */
.r8c-progress { box-shadow: 0 0 10px rgba(24, 142, 244, .75); }
.r8c-tabs__ink { background: linear-gradient(90deg, #0052d9, #188ef4); }
.r8c-top-btn {
  background-color: var(--r8c-blue);
  background-image: linear-gradient(135deg, #0052d9, #188ef4);
  box-shadow: 0 6px 20px rgba(0, 82, 217, .45), 0 0 16px rgba(24, 142, 244, .32);
}

/* 18.12 移动端抽屉遮罩：加一层模糊，弹出更有层次 */
.r8c-drawer__overlay.is-open {
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

/* 18.13 降低动效偏好：扫束/极光全部静止 */
@media (prefers-reduced-motion: reduce) {
  .r8c-banner::after,
  .r8c-subbanner::after { animation: none; display: none; }
  .r8c-card::before { transition: none; }
}

/* ==========================================================================
   19. r8c.com 首页高保真组件（2026-10-14 全站升级）
   视频 hero + 白色统计条 / 水印区块头 / 方案手风琴 / 资讯区+自动轮播 /
   深色产品专栏 / 服务九宫格 —— 零依赖；无 JS 时首卡/首图可见可读
   -------------------------------------------------------------------------- */

/* ---------- 19.1 视频 hero ----------
   首屏背景改为 <video class="r8c-hero-video"> 循环播放（自动/静音/内联），
   section 自身背景图 = 海报帧（视频加载失败时 display:none 后退回海报）。
   压暗层 ::before 需提层到 z-index:1 —— 否则会沉到视频底下失去作用。 */
.r8c-hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.r8c-banner--video { min-height: 860px; }
.r8c-banner--video::before {
  z-index: 1;
  background-image: linear-gradient(90deg,
      rgba(10, 12, 26, .62) 0%, rgba(10, 12, 26, .28) 45%,
      rgba(10, 12, 26, .12) 70%, rgba(10, 12, 26, .42) 100%);
  background-size: 100% 100%;
}
.r8c-banner--video .r8c-banner__inner {
  text-align: left;
  padding-top: 127px;        /* sitebar 36 + nav 91 */
  padding-bottom: 190px;     /* 让开底部白色统计条 */
}
.r8c-banner--video .r8c-banner__title {
  font-size: 60px;
  line-height: 74px;
  font-weight: 500;
  letter-spacing: 2px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, .25);
  max-width: 900px;
}
.r8c-banner--video .r8c-banner__desc { max-width: 640px; margin-bottom: 44px; }
.r8c-banner--video .r8c-banner__btns { justify-content: flex-start; gap: 16px; }

/* hero 按钮：描边 ghost + 白色 solid（r8c.com 首屏实测式样） */
.r8c-hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 1px;
  border-radius: var(--r8c-radius-sm);
  transition: var(--r8c-ease);
  position: relative;
  overflow: hidden;
}
.r8c-hero-btn--ghost {
  border: 1px solid rgba(255, 255, 255, .65);
  color: #fff;
  background: rgba(255, 255, 255, .06);
}
.r8c-hero-btn--ghost:hover { background: rgba(255, 255, 255, .16); border-color: #fff; }
.r8c-hero-btn--ghost svg { transition: transform .3s ease; }
.r8c-hero-btn--ghost:hover svg { transform: translateX(4px); }
.r8c-hero-btn--solid {
  background: #fff;
  color: #222;
  box-shadow: 0 8px 30px rgba(0, 0, 0, .22);
}
.r8c-hero-btn--solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 34px rgba(0, 0, 0, .28);
}

/* 白色统计条：吸在 hero 底部，蓝色数字 + 细分隔线（r8c.com 签名式收尾） */
.r8c-statsbar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  height: 125px;
  background: #fff;
  box-shadow: 0 -6px 30px rgba(15, 13, 29, .08);
  display: flex;
  align-items: center;
}
.r8c-statsbar__wrap {
  width: 100%;
  max-width: var(--r8c-container);
  margin: 0 auto;
  padding: 0 15px;
  display: flex;
  align-items: center;
}
.r8c-statsbar .r8c-stat { flex: 1; text-align: center; position: relative; }
.r8c-statsbar .r8c-stat + .r8c-stat::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 44px;
  background: linear-gradient(180deg, transparent, #e3e9f3, transparent);
}
.r8c-statsbar .r8c-stat__num {
  font-size: 35px;
  font-weight: 600;
  color: var(--r8c-blue);
  line-height: 1.1;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}
.r8c-statsbar .r8c-stat__num em { color: var(--r8c-blue); font-size: 24px; }
.r8c-statsbar .r8c-stat__label { font-size: 15px; line-height: 22px; color: var(--r8c-title); }

/* hero 装饰件：旋转/呼吸的 C 形（r8c.com 首屏同款语言） */
.r8c-hero-deco { position: absolute; pointer-events: none; z-index: 1; opacity: .9; }
.r8c-hero-deco--d1 { top: 6%; left: 2%; width: 230px; animation: r8cSpin 14s linear infinite; }
.r8c-hero-deco--d2 { top: 24%; left: 9%; width: 96px; animation: r8cBreathe 3.4s ease-in-out infinite; }
.r8c-hero-deco--d3 { bottom: 20%; right: 2%; width: 120px; animation: r8cSpin 9s linear infinite reverse; }
.r8c-hero-deco--d4 { bottom: 34%; right: 8%; width: 56px; animation: r8cBreathe 2.6s ease-in-out infinite .6s; }
@keyframes r8cSpin { to { transform: rotate(360deg); } }
@keyframes r8cBreathe {
  0%, 100% { transform: scale(1); opacity: .55; }
  50% { transform: scale(1.12); opacity: .9; }
}

/* ---------- 19.2 水印区块头 ---------- */
.r8c-sechead { position: relative; text-align: center; z-index: 2; }
.r8c-sechead__wm {
  position: absolute;
  top: -118px;
  left: 0;
  right: 0;
  font-size: 150px;
  line-height: 1;
  font-weight: 700;
  color: #f0f4fb;
  -webkit-text-stroke: 1px #dfe8f6;
  letter-spacing: 4px;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
}
.r8c-sechead__sub {
  position: relative;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--r8c-blue);
}
.r8c-sechead__sub .dec { font-size: 40px; color: var(--r8c-title); font-weight: 700; margin: 0 2px; }
.r8c-sechead__h2 {
  position: relative;
  margin-top: 14px;
  font-size: 40px;
  line-height: 56px;
  font-weight: 600;
  color: var(--r8c-title);
}
.r8c-sechead__more {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 24px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--r8c-blue-light), var(--r8c-blue-deep));
  color: #fff;
  font-size: 14px;
  box-shadow: 0 6px 18px rgba(49, 108, 232, .32);
  transition: var(--r8c-ease);
}
.r8c-sechead__more:hover { filter: brightness(1.06); transform: translateY(-50%) translateX(2px); }
.r8c-sechead__more svg { transition: transform .3s; }
.r8c-sechead__more:hover svg { transform: translateX(3px); }
/* 深色区内的区块头：水印改描边白，标题反白 */
.r8c-prodz .r8c-sechead__wm { color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, .22); }
.r8c-prodz .r8c-sechead__h2 { color: #fff; }
.r8c-prodz .r8c-sechead__sub { color: var(--r8c-blue-light); }
.r8c-prodz .r8c-sechead__sub .dec { color: #fff; }

/* ---------- 19.3 方案手风琴 ----------
   收起态 = 照片卡（封面+标题+一句话）；展开态 = 浅色面板（特性列表+案例+按钮）。
   .on 由 HTML 首卡自带（无 JS 可见）；hover 只在 (hover:hover) 设备上追加展开；
   触屏设备由 JS 点击切换 .on。 */
.r8c-acc { display: flex; gap: 20px; margin-top: 64px; height: 500px; }
.r8c-acc__card {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  height: 100%;
  border: 2px solid #fff;
  border-radius: var(--r8c-radius);
  overflow: hidden;
  background: #0f1420;
  cursor: pointer;
  transition: flex-grow .45s cubic-bezier(.4, 0, .2, 1),
              flex-basis .45s cubic-bezier(.4, 0, .2, 1),
              box-shadow .35s ease, background-color .35s ease;
}
.r8c-acc__card.on {
  flex: 0 0 460px;
  background: linear-gradient(180deg, #f3f5f8, #fff);
  box-shadow: var(--r8c-shadow-dual);
}
.r8c-acc__cover {
  position: absolute;
  inset: 0;
  background-size: auto 100%;
  background-position: 100% 0;
  background-repeat: no-repeat;
  transition: opacity .4s ease;
}
.r8c-acc__cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 28, .34), rgba(10, 14, 28, .05) 40%, rgba(10, 14, 28, .28));
}
.r8c-acc__card.on .r8c-acc__cover { opacity: 0; }
.r8c-acc__tit {
  position: absolute;
  top: 56px;
  left: 20px;
  right: 20px;
  z-index: 2;
  font-size: 22px;
  line-height: 28px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-shadow: 0 1px 10px rgba(0, 0, 0, .3);
  transition: color .3s ease;
}
.r8c-acc__card.on .r8c-acc__tit { color: var(--r8c-title); text-shadow: none; }
.r8c-acc__desc {
  position: absolute;
  top: 96px;
  left: 20px;
  right: 20px;
  z-index: 2;
  max-width: 156px;
  font-size: 15px;
  line-height: 22px;
  color: rgba(255, 255, 255, .95);
  text-shadow: 0 1px 8px rgba(0, 0, 0, .35);
  transition: opacity .3s ease;
}
.r8c-acc__card.on .r8c-acc__desc { opacity: 0; }
.r8c-acc__panel {
  position: absolute;
  top: 96px;
  left: 26px;
  right: 26px;
  bottom: 26px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s ease .12s;
}
.r8c-acc__card.on .r8c-acc__panel { opacity: 1; pointer-events: auto; }
.r8c-acc__full {
  margin-bottom: 14px;
  padding-left: 12px;
  border-left: 3px solid var(--r8c-primary);
  font-size: 17px;
  line-height: 24px;
  font-weight: 600;
  color: var(--r8c-title);
}
.r8c-acc__feats { display: flex; flex-direction: column; gap: 10px; }
.r8c-acc__feats li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 22px;
  color: var(--r8c-dark-text);
}
.r8c-acc__feats .ficon { position: absolute; left: 0; top: 1px; width: 20px; height: 20px; }
.r8c-acc__case { margin-top: 16px; }
.r8c-acc__case .case-card {
  display: inline-block;
  padding: 10px;
  background: #fff;
  border: 1px solid #e5e8ed;
  border-radius: var(--r8c-radius-lg);
  box-shadow: var(--r8c-shadow-dual-sm);
}
.r8c-acc__case img { width: 330px; height: 138px; object-fit: cover; border-radius: var(--r8c-radius); }
.r8c-acc__case.multi { display: flex; gap: 12px; }
.r8c-acc__case.multi .case-card img { width: 146px; height: 104px; }
.r8c-acc__prod { margin-top: 16px; font-size: 15px; line-height: 24px; color: var(--r8c-title); }
.r8c-acc__cta { margin-top: auto; padding-top: 18px; }
.r8c-acc__cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 248px;
  height: 38px;
  background: #2f4fd6;               /* r8c.com 手风琴按钮实测色 */
  color: #fff;
  font-size: 14px;
  letter-spacing: 2px;
  border-radius: var(--r8c-radius-sm);
  transition: var(--r8c-ease);
}
.r8c-acc__cta a:hover { filter: brightness(1.1); box-shadow: 0 8px 20px rgba(47, 79, 214, .3); }
/* 鼠标设备：悬停即展开（无 JS 也生效） */
@media (hover: hover) {
  .r8c-acc__card:hover {
    flex: 0 0 460px;
    background: linear-gradient(180deg, #f3f5f8, #fff);
    box-shadow: var(--r8c-shadow-dual);
  }
  .r8c-acc__card:hover .r8c-acc__cover { opacity: 0; }
  .r8c-acc__card:hover .r8c-acc__tit { color: var(--r8c-title); text-shadow: none; }
  .r8c-acc__card:hover .r8c-acc__desc { opacity: 0; }
  .r8c-acc__card:hover .r8c-acc__panel { opacity: 1; pointer-events: auto; }
}

/* ---------- 19.4 资讯区（水印头 + 左列表 + 右轮播） ---------- */
.r8c-newsz { position: relative; overflow: hidden; }
.r8c-newsz__deco { position: absolute; pointer-events: none; z-index: 0; }
.r8c-newsz__deco--paopao { top: 40px; left: -40px; width: 420px; opacity: .9; }
.r8c-newsz__deco--sshape { top: 150px; right: -60px; width: 300px; opacity: .8; }
.r8c-newsz__body { position: relative; z-index: 2; display: flex; gap: 40px; margin-top: 56px; }
.r8c-newsz__list { width: 41.6%; flex: none; display: flex; flex-direction: column; gap: 22px; }
.r8c-newsz__item { display: flex; gap: 20px; align-items: stretch; }
.r8c-newsz__thumb {
  position: relative;
  width: 180px;
  flex: none;
  height: 112px;
  border-radius: var(--r8c-radius-lg);
  overflow: hidden;
  background: #eef3fa;
}
.r8c-newsz__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.r8c-newsz__item:hover .r8c-newsz__thumb img { transform: scale(1.1); }
.r8c-newsz__date {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 3px 10px;
  background: var(--r8c-primary);
  color: #fff;
  font-size: 13px;
  line-height: 20px;
  border-top-right-radius: 6px;
}
.r8c-newsz__info { flex: 1; display: flex; flex-direction: column; justify-content: space-between; padding: 2px 0; }
.r8c-newsz__tit {
  font-size: 17px;
  line-height: 25px;
  font-weight: 400;
  color: var(--r8c-title);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--r8c-ease);
}
.r8c-newsz__item:hover .r8c-newsz__tit { color: var(--r8c-blue); }
.r8c-newsz__date2 { font-size: 13px; color: #707070; }
.r8c-newsz__car {
  flex: 1;
  position: relative;
  border-radius: var(--r8c-radius-lg);
  overflow: hidden;
  height: 466px;
  background: #eef3fa;
  box-shadow: var(--r8c-shadow-soft);
}
/* 无 JS：只显示第一张；JS 就绪（哨兵类）后全部绝对定位淡切 */
.r8c-newsz__slide:first-child { position: absolute; inset: 0; }
.r8c-newsz__slide:not(:first-child) { display: none; }
html.r8c-motion-ready .r8c-newsz__slide {
  display: block;
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity .8s ease;
  pointer-events: none;
}
html.r8c-motion-ready .r8c-newsz__slide.is-on { opacity: 1; pointer-events: auto; }
.r8c-newsz__slide img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s ease; }
.r8c-newsz__car:hover .r8c-newsz__slide.is-on img { transform: scale(1.04); }
.r8c-newsz__dots { position: absolute; right: 22px; bottom: 18px; display: flex; gap: 8px; z-index: 3; }
.r8c-newsz__dots button {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .55);
  transition: var(--r8c-ease);
  padding: 0;
}
.r8c-newsz__dots button.is-on { background: #fff; width: 22px; border-radius: 999px; }

/* ---------- 19.5 深色产品专栏 ---------- */
.r8c-prodz { color: rgba(255, 255, 255, .75); overflow: hidden; }
.r8c-prodz__main { display: flex; gap: 44px; align-items: center; margin-top: 80px; position: relative; z-index: 2; }
.r8c-prodz__deco { width: 400px; flex: none; }
.r8c-prodz__cats { flex: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.r8c-prodz__cats--full { width: 100%; }
.r8c-catz {
  position: relative;
  height: 170px;
  border-radius: var(--r8c-radius);
  overflow: hidden;
  background: #101426;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px 22px;
  transition: var(--r8c-ease);
}
.r8c-catz:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0, 0, 0, .45); }
.r8c-catz__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .85;
  transition: transform .8s ease, opacity .4s ease;
}
.r8c-catz:hover .r8c-catz__bg { transform: scale(1.07); opacity: 1; }
.r8c-catz::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 10, 22, .15), rgba(8, 10, 22, .62));
}
.r8c-catz h3, .r8c-catz__btn { position: relative; z-index: 2; }
.r8c-catz h3 {
  font-size: 19px;
  color: #fff;
  font-weight: 600;
  letter-spacing: 1px;
  text-shadow: 0 1px 10px rgba(0, 0, 0, .4);
}
.r8c-catz__btn {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--r8c-blue);
  color: #fff;
  font-size: 12.5px;
  transition: var(--r8c-ease);
}
.r8c-catz__btn:hover { background: var(--r8c-primary); transform: translateX(3px); }
.r8c-prodz__plats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 56px; position: relative; z-index: 2; }
.r8c-plat {
  background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: var(--r8c-radius);
  overflow: hidden;
  transition: var(--r8c-ease);
}
.r8c-plat:hover {
  transform: translateY(-5px);
  border-color: rgba(41, 130, 229, .5);
  box-shadow: 0 18px 44px rgba(0, 0, 0, .4);
}
.r8c-plat__img { height: 132px; overflow: hidden; }
.r8c-plat__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.r8c-plat:hover .r8c-plat__img img { transform: scale(1.06); }
.r8c-plat__body { padding: 18px 20px 22px; }
.r8c-plat h4 { font-size: 17px; color: #fff; font-weight: 600; }
.r8c-plat__kicker { font-size: 12px; color: var(--r8c-blue-light); letter-spacing: 1px; margin-bottom: 6px; }
.r8c-plat p { margin-top: 10px; font-size: 13px; line-height: 22px; color: rgba(255, 255, 255, .6); }

/* ---------- 19.6 服务九宫格（inset 双投影按压感） ---------- */
.r8c-grip { display: flex; flex-wrap: wrap; margin: 36px -10px -20px; }
.r8c-grip li { width: 25%; padding: 0 10px; margin-bottom: 20px; }
.r8c-grip__nav {
  display: block;
  position: relative;
  height: 100%;
  min-height: 112px;
  padding: 24px 20px;
  background: linear-gradient(180deg, #f3f5f8, #fff);
  border: 2px solid #fff;
  border-radius: var(--r8c-radius);
  box-shadow: var(--r8c-shadow-dual);
  transition: var(--r8c-ease);
}
.r8c-grip__nav:hover {
  background: #f3f5f8;
  box-shadow: inset 8px 8px 20px rgba(55, 99, 170, .1), inset -8px -8px 20px #fff;
}
.r8c-grip__ico {
  position: absolute;
  right: 20px;
  bottom: 24px;
  width: 30px;
  height: 30px;
  color: var(--r8c-blue);
}
.r8c-grip__cnt { max-width: calc(100% - 56px); }
.r8c-grip__tit {
  font-size: 18px;
  line-height: 26px;
  font-weight: 600;
  color: #000;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.r8c-grip__desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 22px;
  color: #4b5b76;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 19.8 分栏大标题（左竖条 + 英文 eyebrow + 渐变底线） ----------
   service-about「我们是谁」原为裸 h3(18px)，与正文同量级、毫无视觉重量。
   本组件把站内三样已有语言叠在一起：
     18.9 的菱形科技标 → 英文 eyebrow
     15.4 page-head 的渐变短线 → 标题底部短线
     18.x 的蓝→青渐变 → 左侧竖条
   字号 48px（原 18px），字重 600，与左侧配图形成对角呼应。 */
.r8c-bigtit {
  position: relative;
  padding-left: 24px;
  margin-bottom: 26px;
}
.r8c-bigtit__bar {
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 5px;
  border-radius: 3px;
  background: linear-gradient(180deg, #0052d9 0%, #188ef4 55%, #6ee7ff 100%);
  box-shadow: 0 2px 10px rgba(0, 82, 217, .22);
}
.r8c-bigtit__en {
  display: block;
  font-size: 15px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--r8c-blue);
  margin-bottom: 6px;
}
.r8c-bigtit__en::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 10px;
  background: linear-gradient(135deg, #0052d9, #6ee7ff);
  transform: rotate(45deg) translateY(-1px);
  box-shadow: 0 0 8px rgba(24, 142, 244, .5);
}
.r8c-bigtit__zh {
  position: relative;
  display: inline-block;
  font-size: 48px;
  line-height: 1.28;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--r8c-title);
  padding-bottom: 16px;
}
.r8c-bigtit__zh::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, #0052d9 0%, #188ef4 45%, rgba(24, 142, 244, 0) 100%);
}
.r8c-bigtit__desc {
  margin-top: 18px;
  font-size: 16px;
  line-height: 30px;
  color: var(--r8c-body);
}

/* ---------- 19.7 响应式 ---------- */
@media (max-width: 1200px) {
  .r8c-banner--video .r8c-banner__title { font-size: 52px; line-height: 66px; }
  .r8c-sechead__wm { font-size: 110px; }
  .r8c-acc__card.on { flex: 0 0 400px; }
  .r8c-prodz__deco { width: 320px; }
  .r8c-newsz__car { height: 420px; }
  .r8c-bigtit__zh { font-size: 42px; }
}
@media (max-width: 991px) {
  .r8c-banner--video { min-height: 660px; }
  .r8c-banner--video .r8c-banner__inner { padding-bottom: 170px; }
  .r8c-banner--video .r8c-banner__title { font-size: 38px; line-height: 54px; letter-spacing: 1px; }
  .r8c-banner--video .r8c-banner__desc { font-size: 16px; line-height: 28px; }
  .r8c-hero-deco--d1 { width: 150px; }
  .r8c-hero-deco--d2, .r8c-hero-deco--d4 { display: none; }
  .r8c-statsbar { height: auto; padding: 18px 0; }
  .r8c-statsbar__wrap { flex-wrap: wrap; }
  .r8c-statsbar .r8c-stat { flex: 0 0 50%; padding: 10px 0; }
  .r8c-statsbar .r8c-stat:nth-child(3)::before { display: none; }
  .r8c-statsbar .r8c-stat__num { font-size: 28px; }
  .r8c-statsbar .r8c-stat__label { font-size: 13px; }
  .r8c-sechead__wm { font-size: 64px; top: -64px; -webkit-text-stroke-width: 0; color: #eef3fb; }
  .r8c-prodz .r8c-sechead__wm { color: rgba(255, 255, 255, .1); -webkit-text-stroke-width: 0; }
  .r8c-sechead__h2 { font-size: 26px; line-height: 38px; }
  .r8c-sechead__sub { font-size: 15px; }
  .r8c-bigtit { padding-left: 18px; }
  .r8c-bigtit__bar { width: 4px; }
  .r8c-bigtit__zh { font-size: 34px; letter-spacing: 1px; padding-bottom: 13px; }
  .r8c-bigtit__en { font-size: 13px; letter-spacing: 2px; }
  .r8c-sechead__sub .dec { font-size: 24px; }
  .r8c-sechead__more { position: static; transform: none; margin-top: 16px; }
  .r8c-newsz__body { flex-direction: column; }
  .r8c-newsz__list { width: 100%; }
  .r8c-newsz__car { height: 300px; }
  .r8c-acc { flex-direction: column; height: auto; gap: 14px; }
  .r8c-acc__card { height: 150px; flex: none; }
  .r8c-acc__card.on { flex: none; height: auto; min-height: 420px; }
  .r8c-acc__desc { max-width: 100%; }
  .r8c-acc__case img { width: 100%; height: 150px; }
  .r8c-acc__cta a { width: 100%; }
  .r8c-prodz__main { flex-direction: column; }
  .r8c-prodz__deco { width: 100%; max-width: 420px; }
  .r8c-prodz__cats { grid-template-columns: repeat(2, 1fr); width: 100%; }
  .r8c-prodz__plats { grid-template-columns: repeat(2, 1fr); }
  .r8c-grip li { width: 50%; }
}
@media (max-width: 576px) {
  .r8c-banner--video { min-height: 600px; }
  .r8c-banner--video .r8c-banner__title { font-size: 30px; line-height: 44px; }
  .r8c-hero-btn { padding: 12px 22px; font-size: 14px; }
  .r8c-newsz__thumb { width: 120px; height: 86px; }
  .r8c-newsz__tit { font-size: 14.5px; line-height: 21px; -webkit-line-clamp: 2; }
  .r8c-grip li { width: 100%; }
  .r8c-prodz__cats { grid-template-columns: 1fr; }
  .r8c-prodz__plats { grid-template-columns: 1fr; }
  .r8c-catz { height: 140px; }
  .r8c-sechead__h2 { font-size: 22px; line-height: 32px; }
  .r8c-bigtit__zh { font-size: 27px; letter-spacing: 0; }
  .r8c-bigtit__en { font-size: 12px; letter-spacing: 1.5px; }
}
@media (prefers-reduced-motion: reduce) {
  .r8c-hero-deco { animation: none; }
  .r8c-acc__card, .r8c-acc__cover, .r8c-acc__panel,
  .r8c-newsz__slide, .r8c-newsz__slide img,
  .r8c-catz, .r8c-catz__bg, .r8c-plat, .r8c-plat__img img { transition: none; }
}