/* ============================================================
   ymweb 首页样式表
   主题：亮色 / 蓝色
   无外部依赖（图标全部内联 SVG），可独立使用
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root {
  /* 品牌蓝 */
  --blue-50:  #EFF6FF;
  --blue-100: #DBEAFE;
  --blue-200: #BFDBFE;
  --blue-300: #93C5FD;
  --blue-400: #60A5FA;
  --blue-500: #3B82F6;
  --blue-600: #2563EB;
  --blue-700: #1D4ED8;
  --blue-800: #1E40AF;

  /* 点缀青 */
  --cyan-400: #22D3EE;
  --cyan-500: #06B6D4;

  /* 中性色 */
  --ink-900: #0B1220;
  --ink-800: #16233D;
  --ink-700: #1E293B;
  --ink-600: #334155;
  --ink-500: #475569;
  --ink-400: #64748B;
  --ink-300: #94A3B8;

  --line:      #E2E8F0;
  --line-soft: #EDF2F9;
  --bg:        #FFFFFF;
  --bg-soft:   #F7FAFF;
  --bg-mute:   #F1F5F9;

  /* 圆角 / 阴影 */
  --r-sm: 8px;
  --r:    14px;
  --r-lg: 20px;
  --r-pill: 999px;

  --sh-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --sh:    0 6px 20px -6px rgba(15, 23, 42, .12);
  --sh-md: 0 18px 36px -18px rgba(15, 23, 42, .22);
  --sh-blue: 0 20px 40px -18px rgba(37, 99, 235, .45);

  --container: 1200px;
  --header-h: 60px;
  /* 与 ymweb 对齐：首屏 560px，减去服务条压住的 46px = 可见中间段 514px */
  --hero-band: 514px;
  /* 服务横栏实测高度：上下 20px 内边距 + 图标/文字 + 上下各 1px 边线 */
  --service-bar-h: 90px;

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei",
          "Hiragino Sans GB", -apple-system, BlinkMacSystemFont,
          "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-500);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink-900);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -.015em;
}

p  { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
img { display: block; max-width: 100%; border: 0; }
a  { color: inherit; text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

svg { display: block; }

::selection { background: var(--blue-200); color: var(--ink-900); }

/* ---------- 3. 布局容器 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section      { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }

.section-head {
  max-width: 680px;
  margin: 0 auto 56px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--blue-600);
  background: var(--blue-50);
  border-radius: var(--r-pill);
}

.section-title {
  font-size: 34px;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 16px;
  color: var(--ink-400);
}

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--r-sm);
  white-space: nowrap;
  transition: background-color .2s, color .2s, border-color .2s,
              box-shadow .2s, transform .2s;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  color: #fff;
  background: var(--blue-600);
  box-shadow: 0 6px 16px -6px rgba(37, 99, 235, .5);
}
.btn-primary:hover {
  background: var(--blue-700);
  box-shadow: 0 10px 22px -8px rgba(37, 99, 235, .6);
}

.btn-ghost {
  color: var(--ink-700);
  border: 1px solid var(--line);
  background: #fff;
}
.btn-ghost:hover {
  color: var(--blue-600);
  border-color: var(--blue-300);
  background: var(--blue-50);
}

.btn-white {
  color: var(--blue-700);
  background: #fff;
  box-shadow: var(--sh-sm);
}
.btn-white:hover { background: var(--blue-50); }

.btn-outline-white {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .55);
}
.btn-outline-white:hover {
  background: rgba(255, 255, 255, .14);
  border-color: #fff;
}

.btn-lg { height: 50px; padding: 0 30px; font-size: 16px; }

.btn svg { flex: none; }

/* ============================================================
   头部导航
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  /* 半透明磨砂：首屏视频会从顶栏下方透出来 */
  background: rgba(255, 255, 255, .52);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s, background-color .25s;
}

.site-header.is-stuck {
  border-bottom-color: var(--line);
  box-shadow: 0 4px 20px -12px rgba(15, 23, 42, .35);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
  height: var(--header-h);
  /* 左侧预留 3 个字（3em ≈ 45px）的间距 */
  padding-left: 45px;
}

/* -- Logo -- */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  height: 100%;
}

/* 后台配置的 LOGO 图片（{$setting.web_logo}）：
   高度缩到顶栏的 3/4，宽度随图片比例自适应 */
.logo-img {
  height: 36px;
  width: auto;
  max-width: none;
  object-fit: contain;
}

/* 无 LOGO 图片时的文字兜底 */
.logo-text {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--ink-900);
}

/* -- 主导航 -- */
.main-nav { margin-right: auto; }

.main-nav > ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav > ul > li { position: relative; }

.main-nav > ul > li > a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: var(--header-h);
  padding: 0 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-800);
  white-space: nowrap;
  transition: color .2s;
}

/* 选中 / 悬停：蓝色文字 + 底部下划线指示条 */
.main-nav > ul > li > a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--blue-600);
  opacity: 0;
  transform: scaleX(.5);
  transition: opacity .2s, transform .2s;
}

.main-nav > ul > li > a:hover,
.main-nav > ul > li > a.is-active { color: var(--blue-600); }

.main-nav > ul > li > a:hover::after,
.main-nav > ul > li > a.is-active::after {
  opacity: 1;
  transform: none;
}

.main-nav .caret {
  width: 9px;
  height: 9px;
  margin-top: -3px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg);
  opacity: .55;
  transition: transform .2s;
}

/* -- 下拉面板 -- */
.dropdown {
  position: absolute;
  top: calc(var(--header-h) - 8px);
  left: 50%;
  min-width: 220px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--sh-md);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 8px);
  transition: opacity .2s, transform .2s, visibility .2s;
}

.main-nav > ul > li:hover .dropdown,
.main-nav > ul > li:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.main-nav > ul > li:hover .caret,
.main-nav > ul > li:focus-within .caret { transform: rotate(225deg); margin-top: 3px; }

/* 二级链接 */
.dropdown-link,
.dropdown-group li > a {
  display: block;
  padding: 9px 12px;
  font-size: 14.5px;
  color: var(--ink-600);
  border-radius: var(--r-sm);
  transition: background-color .15s, color .15s;
}

.dropdown-link:hover,
.dropdown-group li > a:hover {
  color: var(--blue-600);
  background: var(--blue-50);
}

/* 分组下拉：原模板 nav_type 为 1/2 时，$val.son 的每一项自身还带 son，
   渲染成「分组标题 + 子项列表」 */
.dropdown-group { padding: 4px 2px; }

.dropdown-group + .dropdown-group {
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid var(--line-soft);
}

.dropdown-group-title {
  display: block;
  padding: 5px 12px 7px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--ink-300);
}

/* 通栏菜单：分组横向铺开 */
.dropdown--mega {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 6px 22px;
  padding: 18px 20px;
  min-width: 540px;
  max-width: min(900px, calc(100vw - 64px));
}

.dropdown--mega .dropdown-group { padding: 0; }

.dropdown--mega .dropdown-group + .dropdown-group {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

/* -- 产品大菜单（nav_type 1/2）：左一级、右二级 + 搜索 -- */
.dropdown--mega.mega-products {
  display: block;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  width: 100%;
  min-width: 0;
  max-width: none;
  padding: 0;
  background: #E9F1FF;
  border: 0;
  border-top: 1px solid rgba(37, 99, 235, .12);
  border-radius: 0;
  box-shadow: 0 30px 60px -34px rgba(15, 23, 42, .4);
  transform: none;
}

.main-nav > ul > li:hover .dropdown--mega.mega-products,
.main-nav > ul > li:focus-within .dropdown--mega.mega-products {
  transform: none;
}

.mega-panel {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  max-width: 1440px;
  min-height: 460px;
  margin: 0 auto;
}

.mega-side {
  padding: 30px 24px 32px 48px;
  background: rgba(255, 255, 255, .55);
  border-right: 1px solid rgba(37, 99, 235, .08);
}

.mega-side-title {
  margin-bottom: 22px;
  font-size: 26px;
  font-weight: 700;
  color: var(--ink-900);
}

.mega-cats {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.mega-cat {
  display: block;
  width: 100%;
  padding: 11px 14px;
  font-size: 15px;
  color: var(--ink-600);
  text-align: left;
  border-radius: 8px;
  transition: color .2s, background-color .2s;
}

.mega-cat:hover {
  color: var(--blue-600);
  background: rgba(255, 255, 255, .75);
}

.mega-cat.is-active {
  color: var(--blue-600);
  font-weight: 600;
  background: transparent;
  text-decoration: underline;
  text-decoration-color: var(--blue-600);
  text-decoration-thickness: 2px;
  text-underline-offset: 10px;
}

.mega-main {
  min-width: 0;
  padding: 24px 48px 36px;
}

.mega-search {
  position: relative;
  margin-bottom: 20px;
}

.mega-search svg {
  position: absolute;
  top: 50%;
  left: 16px;
  color: var(--ink-300);
  transform: translateY(-50%);
  pointer-events: none;
}

.mega-search input {
  width: 100%;
  height: 46px;
  padding: 0 16px 0 44px;
  font: inherit;
  font-size: 14px;
  color: var(--ink-700);
  background: #fff;
  border: 1px solid transparent;
  border-radius: 6px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.mega-search input::placeholder { color: var(--ink-300); }

.mega-search input:focus {
  border-color: var(--blue-300);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}

.mega-search input::-webkit-search-cancel-button { -webkit-appearance: none; }

.mega-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 14px;
  max-height: 460px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.mega-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 112px;
  padding: 18px;
  background: rgba(255, 255, 255, .5);
  border: 1px solid rgba(255, 255, 255, .6);
  border-radius: 10px;
  transition: background-color .2s, box-shadow .2s;
}

.mega-card:hover {
  background: #fff;
  box-shadow: var(--sh-sm);
}

.mega-card[hidden] { display: none; }

.mega-card-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-800);
}

.mega-card-desc {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-400);
}

.mega-empty {
  padding: 24px 4px;
  font-size: 14px;
  color: var(--ink-300);
}

/* -- 右侧工具区 -- */
.header-tools {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 100%;
  margin-left: auto;
  flex: none;
}

/* 搜索框 */
.header-search {
  position: relative;
  flex: none;
  width: 180px;
  margin-right: 8px;
}

.header-search input {
  width: 100%;
  height: 40px;
  padding: 0 42px 0 14px;
  font: inherit;
  font-size: 14px;
  color: var(--ink-700);
  background: #F2F3F5;
  border: 0;
  border-radius: 6px;
  outline: none;
  transition: background-color .2s, box-shadow .2s;
  -webkit-appearance: none;
  appearance: none;
}

.header-search input::placeholder { color: #6B7280; }

.header-search input::-webkit-search-cancel-button { -webkit-appearance: none; }

.header-search input:focus {
  background: #EDF2F9;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, .16);
}

.header-search button {
  position: absolute;
  top: 0;
  right: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 40px;
  color: #6B7280;
  border-radius: 6px;
  transition: color .2s;
}
.header-search button:hover { color: var(--blue-600); }

/* 文档中心 / 控制台 */
.header-tool {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 100%;
  padding: 0 12px;
  font-size: 16px;
  color: var(--ink-700);
  white-space: nowrap;
  transition: color .2s;
}
.header-tool:hover { color: var(--blue-600); }
.header-tool-ico { flex: none; }

.header-sep {
  flex: none;
  width: 1px;
  height: 18px;
  background: var(--line);
}

/* 登录 / 注册 */
.header-account {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
}

.header-login {
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0 22px;
  font-size: 16px;
  color: var(--ink-700);
  transition: color .2s;
}
.header-login:hover { color: var(--blue-600); }

.header-signup {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 100%;
  padding: 0 24px;
  font-size: 16px;
  font-weight: 500;
  color: #fff;
  background: #1D5CFF;
  white-space: nowrap;
  transition: background-color .2s;
}
.header-signup:hover { background: #1449DB; }
.header-signup svg { flex: none; }

/* 移动端未登录时的头像入口（桌面端不显示） */
.mobile-user { display: none; }

/* 移动端两栏菜单里的一级标题（桌面端不显示） */
.dropdown-title { display: none; }

/* 已登录：用户名 + 头像 + 下拉 */
.account-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 100%;
  padding: 0 16px 0 10px;
  font-size: 16px;
  color: var(--ink-700);
  transition: color .2s;
}
.account-btn:hover { color: var(--blue-600); }

.account-name {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-caret {
  flex: none;
  color: var(--blue-500);
  transition: transform .2s;
}
.header-account.is-open .account-caret { transform: rotate(180deg); }

.account-avatar {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  color: var(--blue-600);
  background: #fff;
  border: 2px solid var(--blue-600);
  border-radius: 50%;
}

.account-menu {
  position: absolute;
  top: calc(100% - 6px);
  right: 14px;
  z-index: 10;
  min-width: 190px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--sh-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .2s, transform .2s, visibility .2s;
}

.header-account:hover .account-menu,
.header-account:focus-within .account-menu,
.header-account.is-open .account-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.account-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  font-size: 14.5px;
  color: var(--ink-600);
  border-radius: var(--r-sm);
  transition: background-color .15s, color .15s;
}
.account-menu a:hover {
  color: var(--blue-600);
  background: var(--blue-50);
}
.account-menu a svg { flex: none; opacity: .8; }

.account-logout {
  margin-top: 6px;
  padding-top: 12px !important;
  border-top: 1px solid var(--line-soft);
  border-radius: 0 0 var(--r-sm) var(--r-sm) !important;
}

/* -- 汉堡按钮（移动端） -- */
.nav-toggle {
  display: none;
  flex: none;
  width: 42px;
  height: 42px;
  margin-left: auto;
  border-radius: var(--r-sm);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle:hover { background: var(--bg-mute); }

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink-700);
  transition: transform .25s, opacity .2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   首屏视频
   ============================================================ */
.hero-slider {
  position: relative;
  /* ymweb 首屏是 560px 高，服务条用 -46px 压在上面，
     所以「顶栏下沿到服务条上沿」的中间段是 514px。
     这里视频要垫到顶栏和磨砂横栏下面，高度 = 顶栏 + 中间段 + 横栏。 */
  width: 100%;
  height: calc(var(--header-h) + var(--hero-band) + var(--service-bar-h));
  overflow: hidden;
  background: var(--bg-soft);
}

.hero-video {
  /* 向上抽掉一个顶栏高度，让视频从页面顶部开始、压在顶栏之下 */
  margin-top: calc(-1 * var(--header-h));
  background:
    radial-gradient(760px 420px at 82% 18%, rgba(29, 92, 255, .18), transparent 64%),
    radial-gradient(620px 360px at 10% 86%, rgba(34, 211, 238, .16), transparent 62%),
    linear-gradient(120deg, #FBFDFF 0%, #EFF5FF 56%, #F7FBFF 100%);
}

.hero-video-el {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 视频上的磨砂层：极轻一点点，保持画面清晰 */
.hero-frost {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(246, 250, 255, .08);
  -webkit-backdrop-filter: blur(1.5px) saturate(104%);
          backdrop-filter: blur(1.5px) saturate(104%);
  pointer-events: none;
}

/* 文案层：始终压在磨砂层与服务入口之上 */
.hero-video-inner {
  position: relative;
  z-index: 4;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  /* 上下留出顶栏和底部磨砂横栏的位置，避免文案被压住 */
  padding-top: calc(var(--header-h) + 12px);
  padding-bottom: calc(var(--service-bar-h) + 18px);
}

/* 首屏小标题：不透明橘色胶囊 */
.hero-kicker {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  margin-bottom: 18px;
  padding: 6px 14px;
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: .04em;
  color: #fff;
  background: #FF6A00;
  border-radius: var(--r-pill);
  box-shadow: 0 10px 22px -12px rgba(255, 106, 0, .85);
}

.hero-title {
  font-size: 54px;
  line-height: 1.16;
  letter-spacing: -.03em;
  margin-bottom: 22px;
}

.hero-title .accent {
  background: linear-gradient(96deg, var(--blue-600), var(--cyan-500));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--blue-600);
}

.hero-desc {
  max-width: 560px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink-400);
  margin-bottom: 34px;
}

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

/* 磨砂层很轻，底下是画面本身：文案改用浅色 + 阴影保证可读性 */
.hero-video .hero-kicker {
  color: rgba(255, 255, 255, .9);
  text-shadow: 0 1px 10px rgba(6, 16, 36, .55);
}
/* 主标题整行统一成不透明的亮深蓝渐变，用 drop-shadow 兜住深色底 */
.hero-video .hero-title {
  /* 收窄到文字宽度，渐变才是「行内」的亮→深蓝，而不是铺满整个容器 */
  align-self: flex-start;
  color: #2F7BFF;
  background: linear-gradient(96deg, #2F7BFF 0%, #1A45C6 52%, #071E72 100%);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 14px rgba(255, 255, 255, .2))
          drop-shadow(0 2px 22px rgba(59, 130, 246, .6));
}
/* 强调行不再单独上色，跟着父级一起吃同一条渐变 */
.hero-video .hero-title .accent {
  color: inherit;
  background: none;
  -webkit-text-fill-color: inherit;
}
.hero-video .hero-desc {
  color: rgba(255, 255, 255, .9);
  text-shadow: 0 1px 12px rgba(6, 16, 36, .6);
}

/* 四个服务入口：与 ymweb 一致的整条磨砂横栏，压在视频底边 */
.hero-services {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
}

.service-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(255, 255, 255, .74);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
          backdrop-filter: blur(16px) saturate(160%);
  border-top: 1px solid rgba(255, 255, 255, .9);
  border-bottom: 1px solid rgba(226, 232, 240, .9);
  box-shadow: 0 26px 52px -34px rgba(15, 23, 42, .38);
}

.service-item {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  padding: 20px 30px;
  border-left: 1px solid rgba(226, 232, 240, .7);
  transition: background-color .2s;
}
.service-item:first-child {
  border-left: 0;
}
.service-item:hover {
  background: rgba(255, 255, 255, .6);
}

.service-ico {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  color: var(--blue-600);
  background: #fff;
  border: 1px solid var(--blue-100);
  border-radius: 10px;
  box-shadow: var(--sh-sm);
}

.service-copy { min-width: 0; }

.service-copy strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.service-copy small {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  color: var(--ink-400);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.service-arrow {
  flex: none;
  margin-left: auto;
  color: var(--ink-300);
  transition: color .2s, transform .2s;
}
.service-item:hover .service-arrow {
  color: var(--blue-600);
  transform: translateX(3px);
}

/* ============================================================
   产品卡片（产品与服务）
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* 每张卡片一个主色。只取亮蓝主题的邻近冷色（蓝 / 青 / 靛 / 紫），
   跟首屏面板里的线路圆点是同一套，不另外引入暖色。 */
.product-card {
  --acc:      var(--blue-600);
  --acc-rgb:  37, 99, 235;
  --acc-tint: var(--blue-50);
  --acc-line: var(--blue-200);

  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px 24px 24px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}

.product-card--cyan   { --acc: #0891B2; --acc-rgb:   8, 145, 178; --acc-tint: #ECFEFF; --acc-line: #A5F3FC; }
.product-card--indigo { --acc: #4F46E5; --acc-rgb:  79,  70, 229; --acc-tint: #EEF2FF; --acc-line: #C7D2FE; }
.product-card--violet { --acc: #7C3AED; --acc-rgb: 124,  58, 237; --acc-tint: #F5F3FF; --acc-line: #DDD6FE; }

/* 顶边的主色细线 */
.product-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: var(--acc);
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--acc-line);
  box-shadow: 0 24px 44px -24px rgba(var(--acc-rgb), .42);
}

/* 图标与英文标签同一行 */
.product-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.product-ico {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: none;
  color: #fff;
  background: var(--acc);
  border-radius: 13px;
  box-shadow: 0 10px 20px -10px rgba(var(--acc-rgb), .62);
}

.product-eyebrow {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--acc);
}

.product-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.product-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-400);
}

/* 卖点行，中间用圆点分隔 */
.product-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 8px;
  margin: 16px 0 22px;
  font-size: 12.5px;
  color: var(--ink-300);
}
.product-tags li { display: flex; align-items: center; gap: 8px; }
.product-tags li + li::before {
  content: '';
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: currentColor;
}

/* 卡片内的按钮（整张卡片是链接，这里用 span 避免嵌套 a） */
.product-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  height: 44px;
  margin-top: auto;
  padding: 0 14px 0 16px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--acc);
  background: var(--acc-tint);
  border: 1px solid var(--acc-line);
  border-radius: var(--r-sm);
  transition: background-color .2s, border-color .2s, color .2s;
}

.product-card:hover .product-btn {
  color: #fff;
  background: var(--acc);
  border-color: var(--acc);
}

.product-btn svg { flex: none; transition: transform .2s; }
.product-card:hover .product-btn svg { transform: translateX(4px); }

/* ============================================================
   产品与服务：标题区（左标题 + 右说明）
   ============================================================ */
.prod-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 44px;
}

.prod-title {
  font-size: 38px;
  line-height: 1.25;
}

.prod-head-desc {
  flex: none;
  max-width: 380px;
  padding-bottom: 6px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-400);
}

/* ============================================================
   服务能力
   ============================================================ */
.cap-inner {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 64px;
  align-items: start;
}

.cap-title {
  font-size: 34px;
  line-height: 1.3;
  margin-bottom: 18px;
}

.cap-desc {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-400);
}

.cap-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  font-size: 15px;
  font-weight: 500;
  color: var(--blue-600);
}
.cap-more svg { transition: transform .2s; }
.cap-more:hover svg { transform: translateX(4px); }

.cap-note {
  margin-top: 34px;
  padding-top: 18px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-300);
  border-top: 1px solid var(--line-soft);
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 40px;
}

/* 每条上方一条通栏细线，编号占固定列宽 */
.cap-item {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.cap-num {
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--blue-600);
}

.cap-item h3 { font-size: 16.5px; margin-bottom: 8px; }

.cap-item p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-400);
}

/* ============================================================
   优势 / 特性
   ============================================================ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
}

.feature {
  display: flex;
  gap: 16px;
}

.feature-ico {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: none;
  color: #fff;
  background: linear-gradient(140deg, var(--blue-500), var(--blue-700));
  border-radius: 12px;
  box-shadow: 0 10px 20px -10px rgba(37, 99, 235, .7);
}

.feature h3 { font-size: 16.5px; margin-bottom: 7px; }

.feature p {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-400);
}

/* ============================================================
   数据条
   ============================================================ */
.stats {
  position: relative;
  overflow: hidden;
  padding: 66px 0;
  color: #fff;
  background: linear-gradient(115deg, var(--blue-800) 0%, var(--blue-600) 52%, var(--blue-500) 100%);
}

.stats::before,
.stats::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.stats::before {
  top: -170px;
  right: -90px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(34, 211, 238, .30), transparent 68%);
}

.stats::after {
  bottom: -200px;
  left: -110px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, .16), transparent 68%);
}

.stats-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-num {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.03em;
  margin-bottom: 8px;
}

.stat-num small {
  font-size: 20px;
  font-weight: 600;
  margin-left: 2px;
}

.stat-label {
  font-size: 15px;
  color: rgba(255, 255, 255, .8);
}

/* ============================================================
   CTA 区块
   ============================================================ */
.cta {
  padding: 84px 0;
}

.cta-box {
  position: relative;
  overflow: hidden;
  padding: 64px 56px;
  text-align: center;
  background: linear-gradient(180deg, var(--blue-50) 0%, #fff 100%);
  border: 1px solid var(--blue-100);
  border-radius: 26px;
}

.cta-box::before {
  content: "";
  position: absolute;
  top: -160px;
  left: 50%;
  width: 620px;
  height: 380px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse, rgba(37, 99, 235, .16), transparent 68%);
  pointer-events: none;
}

.cta-box > * { position: relative; }

.cta-box h2 {
  font-size: 34px;
  margin-bottom: 14px;
}

.cta-box p {
  max-width: 560px;
  margin: 0 auto 32px;
  font-size: 16px;
  color: var(--ink-400);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  color: var(--ink-500);
  background: #fff;
  border-top: 1px solid var(--line-soft);
}

/* 顶部快捷入口 */
.footer-services {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 42px 0 34px;
  border-bottom: 1px solid var(--line);
}

.footer-service {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.footer-service-ico {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  color: var(--blue-600);
}

.footer-service-copy { min-width: 0; }

.footer-service-copy strong {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
  transition: color .2s;
}

.footer-service-copy small {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  color: var(--ink-400);
}

.footer-service:hover .footer-service-copy strong { color: var(--blue-600); }

.footer-hot {
  padding: 1px 5px;
  font-size: 11px;
  font-style: normal;
  font-weight: 500;
  color: #fff;
  background: #EF4444;
  border-radius: 3px;
}

/* 链接栏目 + 品牌 */
.footer-main {
  display: flex;
  gap: 56px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.footer-cols {
  display: grid;
  flex: 1;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 32px;
  min-width: 0;
}

.footer-col { min-width: 0; }

.footer-col h4 {
  margin-bottom: 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
}

.footer-col li + li { margin-top: 11px; }

.footer-col a {
  font-size: 14px;
  color: var(--ink-500);
  transition: color .18s;
}
.footer-col a:hover { color: var(--blue-600); }

/* 品牌块：logo + 邮箱 + QQ 群 */
.footer-brand {
  flex: 0 0 280px;
  min-width: 0;
  padding-left: 48px;
  border-left: 1px solid var(--line);
}

.footer-logo { display: inline-block; }

.footer-logo img {
  height: 37px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
}

.footer-brand-name {
  margin: 14px 0 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
}

.footer-contact {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: var(--ink-500);
  word-break: break-all;
}
.footer-contact + .footer-contact { margin-top: 12px; }
.footer-contact svg { flex: none; color: var(--blue-500); }
a.footer-contact:hover { color: var(--blue-600); }

/* 友情链接（{$f_links}） */
.friendly {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.friendly-title {
  flex: none;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-600);
}

.friendly-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 13.5px;
}

.friendly-list a {
  color: var(--ink-400);
  transition: color .18s;
}
.friendly-list a:hover { color: var(--blue-600); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 22px 0;
  font-size: 13px;
  color: var(--ink-400);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-links a:hover { color: var(--blue-600); }

/* ============================================================
   产品选购（一级 / 二级分组）
   ============================================================ */
/* 整个板块铺一层很淡的蓝，把面板从白色页面上托起来 */
.section.pick {
  background:
    radial-gradient(1100px 420px at 6% -12%, rgba(37, 99, 235, .07), transparent 62%),
    radial-gradient(820px 380px at 100% 0%, rgba(6, 182, 212, .07), transparent 60%),
    var(--bg-soft);
}

/* 侧栏与卡片同属一块面板，中间一条竖线分隔 */
.pick-layout {
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: 0 36px 70px -56px rgba(15, 23, 42, .55);
}

/* 窄屏时侧栏变成一条横向滚动的分类条，它的 min-content 宽得离谱；
   不给两列 min-width:0 的话 1fr 会被撑开，再被上面的 overflow:hidden 悄悄裁掉 */
.pick-layout > * { min-width: 0; }

/* ---- 左：一级分组 ---- */
.pick-side {
  background: linear-gradient(180deg, #F6FAFF 0%, #EEF5FF 55%, #F4F9FF 100%);
  border-right: 1px solid var(--blue-100);
}

.pick-side-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 18px 10px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--ink-400);
}

/* 小圆点，让「产品分类」这个小标题不那么孤零零 */
.pick-side-head::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--blue-500);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .14);
}

.pick-cat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 4px 10px 14px;
}

.pick-cat-item > a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  padding: 0 12px 0 10px;
  font-size: 14px;
  color: var(--ink-600);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 12px;
  transition: background-color .18s, color .18s, border-color .18s,
              box-shadow .18s, transform .18s;
}

/* 未选中悬停：浮起一张半透明白卡 */
.pick-cat-item > a:hover {
  color: var(--blue-700);
  background: rgba(255, 255, 255, .85);
  border-color: var(--blue-100);
  transform: translateX(2px);
}

/* 选中项：白卡 + 蓝色描边 + 投影 */
.pick-cat-item.active > a {
  color: var(--blue-700);
  font-weight: 600;
  background: #fff;
  border-color: var(--blue-200);
  box-shadow: 0 14px 26px -20px rgba(37, 99, 235, .8);
}

/* 图标装进小方块里 */
.pick-cat-ico {
  display: grid;
  place-items: center;
  flex: none;
  width: 30px;
  height: 30px;
  color: var(--blue-500);
  background: #fff;
  border: 1px solid var(--blue-100);
  border-radius: 9px;
  box-shadow: var(--sh-sm);
  transition: color .18s, background-color .18s, border-color .18s, box-shadow .18s;
}

.pick-cat-item > a:hover .pick-cat-ico {
  color: var(--blue-600);
  border-color: var(--blue-200);
}

.pick-cat-item.active .pick-cat-ico {
  color: #fff;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  border-color: transparent;
  box-shadow: 0 8px 16px -8px rgba(37, 99, 235, .85);
}

.pick-cat-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 分组数量做成小胶囊 */
.pick-cat-num {
  flex: none;
  min-width: 22px;
  padding: 1px 7px;
  font-size: 11.5px;
  font-weight: 600;
  line-height: 1.6;
  text-align: center;
  color: var(--ink-400);
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  transition: color .18s, background-color .18s, border-color .18s;
}

.pick-cat-num:empty { display: none; }

.pick-cat-item.active .pick-cat-num {
  color: #fff;
  background: var(--blue-600);
  border-color: var(--blue-600);
}

.pick-cat-arrow {
  flex: none;
  color: var(--ink-300);
  transition: color .18s, transform .18s;
}

.pick-cat-item > a:hover .pick-cat-arrow {
  color: var(--blue-500);
  transform: translateX(2px);
}

/* 侧栏底部的兜底入口，填充下方留白 */
.pick-side-help {
  margin: 0 10px 14px;
  padding: 14px 15px;
  background: rgba(255, 255, 255, .78);
  border: 1px dashed var(--blue-200);
  border-radius: 12px;
}

.pick-side-help strong {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-800);
}

.pick-side-help span {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-400);
}

.pick-side-help a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 9px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--blue-600);
}

.pick-side-help a:hover { color: var(--blue-700); }

/* ---- 右：二级分组 ---- */
.pick-main {
  display: flex;
  flex-direction: column;
  padding: 22px 24px 24px;
  background:
    radial-gradient(520px 220px at 100% 0, rgba(6, 182, 212, .05), transparent 70%),
    #fff;
}

.pick-main-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

/* 标题前的短竖条 */
.pick-bar {
  flex: none;
  width: 4px;
  height: 18px;
  background: linear-gradient(180deg, var(--blue-500), var(--cyan-500));
  border-radius: 2px;
}

.pick-main-title { font-size: 18px; }

/* 分组数量胶囊 */
.pick-count {
  padding: 2px 9px;
  font-size: 12px;
  font-weight: 600;
  color: var(--blue-600);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: var(--r-pill);
}

.pick-count:empty { display: none; }

.pick-more {
  display: inline-flex;
  align-items: center;
  height: 32px;
  margin-left: auto;
  padding: 0 15px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--blue-600);
  background: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-radius: var(--r-pill);
  transition: color .2s, background-color .2s, border-color .2s;
}

.pick-more:hover {
  color: #fff;
  background: var(--blue-600);
  border-color: var(--blue-600);
}

/* 卡片：角标 + 名称一行，下面是分组说明，最后一行是卡片自己的入口 */
.pick-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  align-items: stretch;
  margin-bottom: 20px;
}

.pick-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 17px 14px;
  overflow: hidden;
  background: linear-gradient(180deg, #fff 0%, #FBFCFF 100%);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04);
  transition: transform .2s, box-shadow .2s, border-color .2s, background-color .2s;
}

/* 右上角一团淡蓝光晕，悬停时淡入 */
.pick-card::after {
  content: '';
  position: absolute;
  top: -46px;
  right: -46px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, .14), rgba(37, 99, 235, 0) 70%);
  opacity: 0;
  transition: opacity .25s;
  pointer-events: none;
}

/* 上面的 display:flex 会盖掉 [hidden] 自带的 display:none，筛选时卡片藏不掉，这里补回来 */
.pick-card[hidden] { display: none; }

.pick-card:hover {
  transform: translateY(-3px);
  border-color: var(--blue-200);
  background: #fff;
  box-shadow: 0 22px 36px -28px rgba(37, 99, 235, .7);
}

.pick-card:hover::after { opacity: 1; }

/* 角标 + 名称那一行 */
.pick-card-name {
  display: flex;
  align-items: center;
  gap: 9px;
}

/* 分组说明，来自后台的分组简介 */
.pick-card-desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-400);
}

.pick-card-desc:empty { display: none; }

/* 分组名「区域|名称」自动拆出的区域角标；没有竖线时不占位 */
.pick-card-flag:empty { display: none; }

.pick-card-flag {
  display: grid;
  place-items: center;
  flex: none;
  min-width: 28px;
  height: 28px;
  padding: 0 5px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .02em;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  border-radius: 8px;
  box-shadow: 0 6px 12px -8px rgba(37, 99, 235, .9);
}

.pick-card-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-800);
}

/* 卡片自己的入口：一条淡分隔线 + 右侧圆形箭头 */
.pick-card-go {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  margin-top: auto;
  padding-top: 12px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--blue-600);
  border-top: 1px solid var(--line-soft);
}

.pick-card-go svg {
  flex: none;
  width: 13px;
  height: 13px;
  margin-left: auto;
  padding: 4px;
  color: var(--blue-600);
  background: var(--blue-100);
  border-radius: 50%;
  transition: color .18s, background-color .18s, transform .18s;
}

.pick-card:hover .pick-card-go svg {
  color: #fff;
  background: var(--blue-600);
  transform: translateX(3px);
}

.pick-empty {
  padding: 48px 0;
  font-size: 14px;
  color: var(--ink-300);
  text-align: center;
}

/* 面板底部的服务承诺条 */
.pick-facts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  margin-top: auto;
  padding-top: 14px;
  font-size: 12.5px;
  color: var(--ink-400);
  border-top: 1px dashed var(--line);
}

.pick-facts span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.pick-facts svg { flex: none; color: var(--blue-500); }

.pick-facts-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  font-weight: 600;
  color: var(--blue-600);
}

.pick-facts-more:hover { color: var(--blue-700); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1540px) {
  /* 内容较多时的紧凑排版，保证 1920 以下仍有足够空间 */
  .header-inner { gap: 16px; }
  .main-nav > ul > li > a { padding: 0 10px; font-size: 14px; }
  .header-search { width: 160px; }
  .header-tool { padding: 0 10px; }
  .header-login { padding: 0 16px; }
  .header-signup { padding: 0 20px; }
}

@media (max-width: 1400px) {
  /* 空间不足时先收起搜索框，导航和登录注册优先 */
  .header-search { display: none; }
}

@media (max-width: 1080px) {
  /* 再窄一档收起文档中心 / 控制台，导航保持完整直到 920px 折叠 */
  .header-tool,
  .header-sep { display: none; }

  .footer-services { grid-template-columns: 1fr 1fr; gap: 20px 32px; }

  .footer-main { flex-direction: column; gap: 34px; }

  .footer-brand {
    flex: none;
    padding: 28px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .hero-title { font-size: 46px; }
}

@media (max-width: 920px) {
  /* header 上的 backdrop-filter 会把自己变成 fixed 子元素的包含块，
     抽屉会被定位到 header 那块小区域而不是视口，再被 translateX(100%) 甩到屏幕外。
     手机端干脆不要毛玻璃，同时把底色改成不透明补回来。 */
  .site-header {
    background: #fff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    /* header 上的 z-index 会开一个层叠上下文，抽屉的 z-index 再高也只在这个上下文里排，
       整体还是按 header 的层级去跟遮罩（z-index 110）比，结果遮罩盖在抽屉上面点不动。
       把 header 抬到遮罩之上，抽屉跟着一起上去。 */
    z-index: 130;
  }

  /* 导航折叠为全屏两栏面板：左栏一级分类，右栏二级 */
  .nav-toggle { display: flex; margin-left: 0; margin-right: 12px; }

  .header-inner { padding-left: 24px; }

  .nav-toggle[aria-expanded="true"] {
    border: 1px solid var(--ink-700);
    border-radius: 0;
  }

  .header-search,
  .header-login,
  .header-signup { display: none; }

  /* 未登录时右上角显示头像入口，登录后显示账户头像 */
  .mobile-user {
    display: inline-flex;
    align-items: center;
    height: 100%;
    padding: 0 8px;
  }

  /* 右上角只留头像 + 菜单键 */
  .account-btn { gap: 0; padding: 0 8px; }
  .account-name,
  .account-caret { display: none; }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 120;
    width: 100%;
    margin: 0;
    padding: 0;
    background: #F4F6FA;
    border: 0;
    box-shadow: none;
    overflow: hidden;
    transform: translateX(100%);
    transition: transform .3s cubic-bezier(.4, 0, .2, 1);
  }

  .main-nav.is-open { transform: translateX(0); }

  /* 左栏：一级分类 */
  .main-nav > ul {
    position: static;
    width: 142px;
    height: 100%;
    display: block;
    padding: 8px 0;
    background: #F4F6FA;
    border-right: 1px solid #E9EDF4;
    overflow-y: auto;
  }

  .main-nav > ul > li { position: static; }

  .main-nav > ul > li > a {
    display: flex;
    align-items: center;
    height: 52px;
    padding: 0 14px;
    font-size: 15px;
    color: var(--ink-700);
    background: transparent;
    border-left: 3px solid transparent;
    border-radius: 0;
  }

  .main-nav > ul > li > a:hover { background: transparent; }

  .main-nav > ul > li.is-active > a {
    color: var(--blue-600);
    font-weight: 600;
    background: #fff;
    border-left-color: var(--blue-600);
  }

  .main-nav .caret { display: none; }

  /* 右栏：当前一级分类下的二级链接 */
  .main-nav .dropdown,
  .main-nav .dropdown--mega {
    position: absolute;
    top: 0;
    left: 142px;
    right: 0;
    bottom: 0;
    display: none;
    width: auto;
    min-width: 0;
    max-width: none;
    margin: 0;
    padding: 18px 18px 32px;
    background: #fff;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    overflow-y: auto;
  }

  .main-nav > ul > li.is-active .dropdown,
  .main-nav > ul > li.is-active .dropdown--mega { display: block; }

  .main-nav > ul > li:hover .dropdown { transform: none; }

  .main-nav .dropdown-title {
    display: block;
    margin-bottom: 8px;
    padding: 0 8px 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--ink-900);
    border-bottom: 1px solid var(--line-soft);
  }

  .main-nav .dropdown-link,
  .main-nav .dropdown-group li > a {
    padding: 12px 8px;
    font-size: 15px;
    color: var(--ink-600);
    border-radius: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .main-nav .dropdown-group { padding: 0; }

  .main-nav .dropdown-group + .dropdown-group {
    margin-top: 8px;
    padding-top: 10px;
    border-top: 1px solid var(--line-soft);
  }

  /* 产品大菜单在移动端：上方搜索 + 下方只列一级分组 */
  .main-nav .mega-products {
    position: absolute;
    top: 0;
    left: 142px;
    right: 0;
    bottom: 0;
    width: auto;
    min-width: 0;
    max-width: none;
    padding: 0;
    background: #fff;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .main-nav .mega-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
    max-width: none;
  }

  .main-nav .mega-main {
    order: 1;
    flex: none;
    padding: 16px 16px 0;
  }

  .main-nav .mega-search { margin-bottom: 14px; }

  .main-nav .mega-search input { height: 42px; background: #F2F4F8; }

  .main-nav .mega-side {
    order: 2;
    display: block;
    flex: 1;
    min-height: 0;
    padding: 12px 16px 24px;
    background: #fff;
    border: 0;
    overflow-y: auto;
  }

  .main-nav .mega-side-title { display: none; }

  .main-nav .mega-cats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .main-nav .mega-cat {
    padding: 14px;
    font-size: 14px;
    color: var(--ink-700);
    text-align: left;
    text-decoration: none;
    background: #F7F9FC;
    border: 1px solid var(--line-soft);
    border-radius: 10px;
  }

  .main-nav .mega-cat.is-active {
    color: var(--ink-700);
    font-weight: 400;
    background: #F7F9FC;
    text-decoration: none;
  }

  .main-nav .mega-cat[hidden] { display: none; }

  /* 输入关键词后：隐藏一级分组，把命中的二级分组显示在原本的卡片区域 */
  .main-nav .mega-products.is-searching .mega-main {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-height: 0;
    padding-bottom: 0;
  }

  .main-nav .mega-products.is-searching .mega-side { display: none; }

  .main-nav .mega-products.is-searching .mega-search { flex: none; }

  .main-nav .mega-products.is-searching .mega-grid {
    display: grid;
    flex: 1;
    min-height: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding-bottom: 24px;
    overflow-y: auto;
  }

  .main-nav .mega-products.is-searching .mega-card {
    min-height: 0;
    padding: 14px;
    background: #F7F9FC;
    border-color: var(--line-soft);
  }

  .main-nav .mega-products.is-searching .mega-card-desc { display: none; }

  .main-nav .mega-products.is-searching .mega-empty {
    flex: none;
    padding: 24px 4px;
  }

  /* 默认只展示一级分组，二级卡片收起 */
  .main-nav .mega-grid { display: none; }

  .nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: 110;
    background: rgba(11, 18, 32, .45);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s, visibility .3s;
  }
  .nav-backdrop.is-open { opacity: 1; visibility: visible; }

  /* 移动端同样对齐 ymweb：中间段 380px，视频再上下延申到顶栏和两行卡片下面
     380（ymweb 移动端首屏）+ 60（顶栏）+ 166（两行卡片 + 底距） */
  .hero-slider { aspect-ratio: auto; height: 606px; }

  /* 移动端服务入口是两行卡片，底部留出它们的厚度，同时别把文案顶得太靠上 */
  .hero-video-inner { padding-bottom: 130px; }

  .hero-title { font-size: 38px; }
  /* 手机端渐变浅一档：小字号下深蓝压在暗部视频上会发黑。
     只改 background-image，别用简写，否则会把 background-clip:text 重置掉 */
  .hero-video .hero-title {
    background-image: linear-gradient(96deg, #7FC4FF 0%, #2F7BFF 46%, #0B2A8C 100%);
  }
  .hero-kicker { margin-bottom: 12px; font-size: 13.5px; }
  .hero-desc { max-width: 100%; font-size: 15px; margin-bottom: 26px; }

  /* 移动端按钮始终居中并占满内容宽度 */
  .hero-actions { justify-content: center; }
  .hero-actions .btn { width: 100%; }

  /* 服务入口：与 ymweb 一致，移动端拆成两列白色卡片，仍然叠在视频上 */
  .hero-services {
    bottom: 18px;
    padding: 0 16px;
  }

  .service-bar {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    background: transparent;
    border: 0;
    box-shadow: none;
    -webkit-backdrop-filter: none;
            backdrop-filter: none;
  }

  .service-item {
    padding: 14px 16px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--sh-sm);
  }
  .service-item:first-child {
    border-left: 1px solid var(--line);
  }
  .service-copy small { display: none; }
  .service-arrow { display: none; }
  .service-ico { width: 40px; height: 40px; }

  .section { padding: 72px 0; }
  .section-title { font-size: 28px; }

  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 28px; }
  .stats-grid   { grid-template-columns: repeat(2, 1fr); gap: 36px 24px; }

  .cta-box { padding: 48px 28px; }
  .cta-box h2 { font-size: 28px; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }

  .header-inner { gap: 12px; padding-left: 18px; }
  .logo-text { font-size: 17px; }
  /* 小屏 LOGO 按 3/4 比例收小 */
  .logo-img { height: 32px; max-width: 46vw; }

  /* 小屏头像收小一档 */
  .account-btn { padding: 0 8px; }
  .account-avatar { width: 34px; height: 34px; }
  .account-menu { right: 10px; }

  /* ymweb 移动端 340px 中间段 + 顶栏 60 + 两行小卡片 146 */
  .hero-slider { height: 546px; }
  /* .container 的 padding 简写会把上内边距清成 0，这里重新声明 */
  .hero-video-inner {
    padding-top: calc(var(--header-h) + 12px);
    padding-bottom: 140px;
  }
  .hero-title { font-size: 31px; }
  .hero-kicker { font-size: 12.5px; }
  .hero-desc  { font-size: 14.5px; margin-bottom: 22px; }
  .hero-actions .btn { width: 100%; }
  .hero-services { bottom: 14px; padding: 0 12px; }
  .service-item { padding: 12px 14px; gap: 10px; }
  .service-copy strong { font-size: 14px; }
  .service-ico { width: 36px; height: 36px; }

  .section { padding: 56px 0; }
  .section-head { margin-bottom: 40px; }
  .section-title { font-size: 24px; }
  .section-desc { font-size: 15px; }

  .product-grid { grid-template-columns: 1fr; gap: 16px; }
  .product-card { padding: 24px 22px; }

  .feature-grid { grid-template-columns: 1fr; gap: 26px; }

  .stats { padding: 48px 0; }
  .stat-num { font-size: 32px; }
  .stat-label { font-size: 14px; }

  .cta { padding: 56px 0; }
  .cta-box { padding: 38px 22px; border-radius: 20px; }
  .cta-box h2 { font-size: 24px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }

  .footer-services { gap: 18px 16px; padding: 30px 0 26px; }
  .footer-service { gap: 10px; }
  .footer-service-ico { width: 38px; height: 38px; }
  .footer-service-ico svg { width: 22px; height: 22px; }
  .footer-service-copy strong { font-size: 14px; }
  .footer-service-copy small { font-size: 12px; }
  .footer-main { padding: 30px 0; }
  .footer-cols { grid-template-columns: 1fr 1fr; gap: 26px 20px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ---------- 产品选购：响应式 ---------- */
@media (max-width: 1080px) {
  .pick-layout { grid-template-columns: 226px minmax(0, 1fr); }
  .pick-grid   { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 920px) {
  /* 侧栏转成横向可滑动的分类条，落在卡片网格上方 */
  .pick-layout { grid-template-columns: minmax(0, 1fr); }
  .pick-side {
    border-right: 0;
    border-bottom: 1px solid var(--blue-100);
  }
  .pick-side-head { padding: 14px 16px 8px; }
  .pick-cat {
    flex-direction: row;
    gap: 8px;
    padding: 0 12px 12px;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .pick-cat::-webkit-scrollbar { display: none; }
  .pick-cat-item { flex: none; }
  .pick-cat-item > a { height: 42px; padding: 0 12px 0 8px; }
  .pick-cat-item > a:hover { transform: none; }
  .pick-cat-arrow { display: none; }
  /* 横向排列时底部兜底入口没有位置，隐藏 */
  .pick-side-help { display: none; }
  .pick-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .pick-main { padding: 14px 14px 16px; }
  .pick-grid { grid-template-columns: 1fr; }
  .pick-card { padding: 14px 15px 12px; }
}

/* ---------- 产品与服务 / 服务能力：响应式 ---------- */
@media (max-width: 1080px) {
  .cap-inner { grid-template-columns: 300px 1fr; gap: 44px; }
}

@media (max-width: 920px) {
  /* 标题区改为上下堆叠 */
  .prod-head { display: block; }
  .prod-head-desc { max-width: 520px; margin-top: 16px; padding-bottom: 0; }
  .prod-title { font-size: 30px; }

  .cap-inner { grid-template-columns: 1fr; gap: 42px; }
  .cap-title { font-size: 28px; }
  .cap-grid { gap: 24px 32px; }
}

@media (max-width: 640px) {
  .prod-title { font-size: 25px; }
  .product-tags { margin: 14px 0 18px; }

  .cap-title { font-size: 24px; }
  .cap-grid { grid-template-columns: 1fr; gap: 24px; }
}