/* ==========================================================================
   山西云上大陆信息技术有限公司 · 官网样式表
   Brand: 云上大陆 CloudMain  |  Domain: cloudmain.vip
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --c-primary: #1652d8;
  --c-primary-dark: #0d3aa0;
  --c-primary-deep: #0b2a6b;
  --c-primary-light: #3d78ff;
  --c-accent: #00b8d9;
  --c-accent-2: #22d3a6;

  --c-ink: #0b1b33;
  --c-title: #12213c;
  --c-body: #4b5769;
  --c-muted: #8b95a7;
  --c-line: #e5ebf4;
  --c-bg: #ffffff;
  --c-bg-soft: #f4f7fc;
  --c-bg-dark: #061229;
  --c-bg-dark-2: #0a1e3f;

  --grad-hero: linear-gradient(118deg, #05132c 0%, #0b2a6b 42%, #1652d8 100%);
  --grad-brand: linear-gradient(96deg, #1652d8 0%, #00b8d9 100%);
  --grad-soft: linear-gradient(180deg, #ffffff 0%, #f4f7fc 100%);

  --sd-sm: 0 2px 10px rgba(17, 42, 92, .06);
  --sd-md: 0 8px 28px rgba(17, 42, 92, .09);
  --sd-lg: 0 18px 50px rgba(11, 42, 107, .14);
  --sd-brand: 0 12px 30px rgba(22, 82, 216, .28);

  --rd-sm: 8px;
  --rd: 14px;
  --rd-lg: 22px;
  --w: 1220px;
  --ease: cubic-bezier(.22, .68, .32, 1);
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--c-body);
  background: var(--c-bg);
  font-size: 15px;
  line-height: 1.75;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; border: 0; }
h1, h2, h3, h4, h5 { color: var(--c-title); font-weight: 700; line-height: 1.3; letter-spacing: -.2px; }
::selection { background: rgba(22, 82, 216, .18); }

.container { width: 100%; max-width: var(--w); margin: 0 auto; padding: 0 24px; }
.section { padding: 92px 0; position: relative; }
.section--soft { background: var(--c-bg-soft); }
.section--tight { padding: 70px 0; }

/* ---------- 标题组 ---------- */
.sec-head { text-align: center; max-width: 780px; margin: 0 auto 54px; }
.sec-head--left { text-align: left; margin-left: 0; }
.sec-tag {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 2px;
  color: var(--c-primary); background: rgba(22, 82, 216, .08);
  padding: 6px 16px; border-radius: 999px; margin-bottom: 18px;
}
.sec-title { font-size: 36px; letter-spacing: -.5px; }
.sec-title em { font-style: normal; background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sec-sub { margin-top: 16px; font-size: 16px; color: var(--c-body); }
.sec-head--light .sec-title { color: #fff; }
.sec-head--light .sec-sub { color: rgba(255, 255, 255, .72); }
.sec-head--light .sec-tag { color: #7fd8ff; background: rgba(127, 216, 255, .12); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  height: 46px; padding: 0 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  cursor: pointer; transition: all .3s var(--ease); white-space: nowrap; border: 1px solid transparent;
}
.btn svg { width: 16px; height: 16px; transition: transform .3s var(--ease); }
.btn:hover svg { transform: translateX(4px); }
.btn--primary { background: var(--grad-brand); color: #fff; box-shadow: var(--sd-brand); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(22, 82, 216, .38); }
.btn--ghost { border-color: rgba(255, 255, 255, .38); color: #fff; background: rgba(255, 255, 255, .06); backdrop-filter: blur(6px); }
.btn--ghost:hover { background: rgba(255, 255, 255, .16); border-color: #fff; }
.btn--outline { border-color: var(--c-line); color: var(--c-title); background: #fff; }
.btn--outline:hover { border-color: var(--c-primary); color: var(--c-primary); transform: translateY(-2px); box-shadow: var(--sd-md); }
.btn--lg { height: 52px; padding: 0 34px; font-size: 16px; }
.btn--sm { height: 38px; padding: 0 20px; font-size: 14px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--c-ink); color: rgba(255, 255, 255, .68);
  font-size: 13px; height: 38px; display: flex; align-items: center;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; }
.topbar-left { display: flex; gap: 22px; }
.topbar a:hover { color: #fff; }
.topbar-right { display: flex; gap: 18px; align-items: center; }
.topbar .dot { color: var(--c-accent); }

/* ---------- 导航 ---------- */
.header { position: sticky; top: 0; z-index: 900; background: #fff; box-shadow: 0 1px 0 var(--c-line); }
.header.is-stuck { box-shadow: 0 6px 24px rgba(11, 27, 51, .08); }
.nav { display: flex; align-items: center; height: 74px; gap: 28px; }
.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-mark { width: 42px; height: 42px; flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-cn { font-size: 20px; font-weight: 800; color: var(--c-title); letter-spacing: 1px; }
.logo-en { font-size: 10px; letter-spacing: 2.6px; color: var(--c-muted); font-weight: 600; text-transform: uppercase; }

.menu { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.menu > li { position: relative; }
.menu > li > a {
  display: block; padding: 10px 16px; font-size: 15px; font-weight: 500; color: var(--c-title);
  border-radius: 8px; position: relative;
}
.menu > li > a:hover { color: var(--c-primary); background: rgba(22, 82, 216, .06); }
.menu > li > a.is-active { color: var(--c-primary); font-weight: 600; }
.menu > li > a.is-active::after {
  content: ''; position: absolute; left: 16px; right: 16px; bottom: 2px; height: 2px;
  background: var(--grad-brand); border-radius: 2px;
}
.submenu {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 200px; background: #fff; border-radius: var(--rd); box-shadow: var(--sd-lg);
  padding: 10px; opacity: 0; visibility: hidden; transition: all .28s var(--ease);
  border: 1px solid var(--c-line);
}
.menu > li:hover .submenu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.submenu a { display: block; padding: 9px 14px; font-size: 14px; color: var(--c-body); border-radius: 8px; }
.submenu a:hover { background: var(--c-bg-soft); color: var(--c-primary); }
.nav-cta { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav-phone { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--c-primary); font-size: 16px; }
.nav-phone svg { width: 18px; height: 18px; }

.burger { display: none; width: 42px; height: 42px; border-radius: 10px; background: var(--c-bg-soft); cursor: pointer; align-items: center; justify-content: center; }
.burger span { display: block; width: 18px; height: 2px; background: var(--c-title); position: relative; }
.burger span::before, .burger span::after { content: ''; position: absolute; left: 0; width: 18px; height: 2px; background: var(--c-title); }
.burger span::before { top: -6px; } .burger span::after { top: 6px; }

/* ---------- 首页主视觉 ---------- */
.hero { position: relative; background: var(--grad-hero); color: #fff; overflow: hidden; }
.hero::before {
  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: 56px 56px; mask-image: radial-gradient(ellipse at 70% 40%, #000 10%, transparent 72%);
}
.hero::after {
  content: ''; position: absolute; width: 760px; height: 760px; right: -180px; top: -260px;
  background: radial-gradient(circle, rgba(0, 184, 217, .34) 0%, transparent 66%); filter: blur(10px);
}
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.06fr .94fr; gap: 46px; align-items: center; padding: 84px 0 96px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px; font-size: 13.5px; font-weight: 600;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .2);
  padding: 7px 17px; border-radius: 999px; margin-bottom: 26px; backdrop-filter: blur(8px);
}
.hero-badge i { width: 7px; height: 7px; border-radius: 50%; background: var(--c-accent-2); box-shadow: 0 0 0 4px rgba(34, 211, 166, .22); animation: pulse 2s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px rgba(34, 211, 166, .06); } }

.hero h1 { color: #fff; font-size: 50px; line-height: 1.2; letter-spacing: -1px; }
.hero h1 em { font-style: normal; font-size: .72em; letter-spacing: 0; background: linear-gradient(96deg, #7fd8ff, #22d3a6); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-desc { margin-top: 22px; font-size: 17px; color: rgba(255, 255, 255, .8); max-width: 560px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-tags span { font-size: 13.5px; color: rgba(255, 255, 255, .82); background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .14); padding: 6px 15px; border-radius: 999px; }
.hero-actions { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 52px; padding-top: 30px; border-top: 1px solid rgba(255, 255, 255, .16); flex-wrap: wrap; }
.hero-stats b { display: block; font-size: 32px; color: #fff; font-weight: 800; letter-spacing: -.5px; }
.hero-stats b i { font-style: normal; font-size: 18px; color: var(--c-accent); }
.hero-stats span { font-size: 13.5px; color: rgba(255, 255, 255, .62); }

/* 主视觉右侧卡片 */
.hero-panel { background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .18); border-radius: var(--rd-lg); padding: 24px; backdrop-filter: blur(14px); }
.hero-panel-title { font-size: 14px; color: rgba(255, 255, 255, .6); margin-bottom: 16px; letter-spacing: 1px; }
.hero-panel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hero-card {
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .13);
  border-radius: var(--rd); padding: 18px 16px; transition: all .3s var(--ease);
}
.hero-card:hover { background: rgba(255, 255, 255, .16); transform: translateY(-4px); border-color: rgba(127, 216, 255, .5); }
.hero-card svg { width: 26px; height: 26px; margin-bottom: 12px; stroke: #8fdcff; }
.hero-card b { display: block; color: #fff; font-size: 15px; margin-bottom: 4px; }
.hero-card p { font-size: 12.5px; color: rgba(255, 255, 255, .6); line-height: 1.6; }

/* ---------- 业务能力四宫格 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.biz-card {
  position: relative; background: #fff; border: 1px solid var(--c-line); border-radius: var(--rd-lg);
  padding: 34px 28px 30px; overflow: hidden; transition: all .35s var(--ease);
}
.biz-card::after {
  content: ''; position: absolute; left: 0; top: 0; height: 3px; width: 0;
  background: var(--grad-brand); transition: width .45s var(--ease);
}
.biz-card:hover { transform: translateY(-8px); box-shadow: var(--sd-lg); border-color: transparent; }
.biz-card:hover::after { width: 100%; }
.biz-ico {
  width: 58px; height: 58px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
  background: rgba(22, 82, 216, .08); margin-bottom: 22px; transition: all .35s var(--ease);
}
.biz-ico svg { width: 30px; height: 30px; stroke: var(--c-primary); }
.biz-card:hover .biz-ico { background: var(--grad-brand); box-shadow: var(--sd-brand); }
.biz-card:hover .biz-ico svg { stroke: #fff; }
.biz-card h3 { font-size: 19px; margin-bottom: 12px; }
.biz-card p { font-size: 14px; color: var(--c-body); min-height: 66px; }
.biz-list { margin: 16px 0 20px; }
.biz-list li { font-size: 13px; color: var(--c-muted); padding-left: 16px; position: relative; line-height: 2; }
.biz-list li::before { content: ''; position: absolute; left: 0; top: 12px; width: 5px; height: 5px; border-radius: 50%; background: var(--c-accent); }
.biz-more { font-size: 13.5px; font-weight: 600; color: var(--c-primary); display: inline-flex; align-items: center; gap: 6px; }
.biz-more::after { content: '→'; transition: transform .3s var(--ease); }
.biz-card:hover .biz-more::after { transform: translateX(4px); }

/* ---------- 深色数据带 ---------- */
.stats { background: var(--grad-hero); color: #fff; position: relative; overflow: hidden; }
.stats::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 15% 20%, rgba(0, 184, 217, .26), transparent 45%),
              radial-gradient(circle at 85% 80%, rgba(34, 211, 166, .18), transparent 45%);
}
.stats .container { position: relative; z-index: 2; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-item { text-align: center; padding: 26px 12px; border-right: 1px solid rgba(255, 255, 255, .12); }
.stat-item:last-child { border-right: 0; }
.stat-num { font-size: 46px; font-weight: 800; letter-spacing: -1.5px; line-height: 1; background: linear-gradient(96deg, #fff, #7fd8ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-num i { font-style: normal; font-size: 22px; }
.stat-label { margin-top: 12px; font-size: 14px; color: rgba(255, 255, 255, .7); }
.stat-label small { display: block; font-size: 12px; color: rgba(255, 255, 255, .45); margin-top: 3px; }

/* ---------- Tab 服务体系 ---------- */
.tabs { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 46px; }
.tab-btn {
  padding: 11px 26px; border-radius: 999px; background: #fff; border: 1px solid var(--c-line);
  font-size: 15px; font-weight: 600; color: var(--c-body); cursor: pointer; transition: all .3s var(--ease);
}
.tab-btn:hover { border-color: var(--c-primary-light); color: var(--c-primary); }
.tab-btn.is-on { background: var(--grad-brand); color: #fff; border-color: transparent; box-shadow: var(--sd-brand); }
.tab-pane { display: none; animation: fadeUp .5s var(--ease); }
.tab-pane.is-on { display: block; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.svc-layout { display: grid; grid-template-columns: 1fr 1.15fr; gap: 52px; align-items: center; }
.svc-img { border-radius: var(--rd-lg); overflow: hidden; box-shadow: var(--sd-lg); position: relative; }
.svc-img img { width: 100%; height: 400px; object-fit: cover; }
.svc-body h3 { font-size: 27px; margin-bottom: 16px; }
.svc-body > p { font-size: 15.5px; margin-bottom: 24px; }
.svc-items { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.svc-item { background: #fff; border: 1px solid var(--c-line); border-radius: var(--rd); padding: 18px 18px 16px; transition: all .3s var(--ease); }
.svc-item:hover { border-color: var(--c-primary); box-shadow: var(--sd-md); transform: translateY(-3px); }
.svc-item b { display: block; font-size: 15px; color: var(--c-title); margin-bottom: 6px; }
.svc-item span { font-size: 13px; color: var(--c-muted); line-height: 1.65; }

/* ---------- 解决方案 ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sol-card {
  background: #fff; border-radius: var(--rd-lg); overflow: hidden; border: 1px solid var(--c-line);
  transition: all .35s var(--ease); display: flex; flex-direction: column;
}
.sol-card:hover { transform: translateY(-8px); box-shadow: var(--sd-lg); border-color: transparent; }
.sol-thumb { position: relative; height: 196px; overflow: hidden; background: var(--c-bg-soft); }
.sol-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.sol-card:hover .sol-thumb img { transform: scale(1.07); }
.sol-cat { position: absolute; left: 16px; top: 16px; background: rgba(6, 18, 41, .72); color: #fff; font-size: 12px; font-weight: 600; padding: 5px 13px; border-radius: 999px; backdrop-filter: blur(6px); }
.sol-body { padding: 24px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.sol-body h3 { font-size: 18.5px; margin-bottom: 10px; }
.sol-body p { font-size: 14px; flex: 1; }
.sol-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.sol-tags span { font-size: 12px; color: var(--c-primary); background: rgba(22, 82, 216, .07); padding: 4px 11px; border-radius: 6px; }

/* ---------- 优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.adv-card { padding: 30px 28px; border-radius: var(--rd-lg); background: #fff; border: 1px solid var(--c-line); transition: all .3s var(--ease); }
.adv-card:hover { box-shadow: var(--sd-md); border-color: transparent; transform: translateY(-5px); }
.adv-num { font-size: 15px; font-weight: 800; color: var(--c-primary); background: rgba(22, 82, 216, .08); width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.adv-card h3 { font-size: 18px; margin-bottom: 10px; }
.adv-card p { font-size: 14px; }

/* ---------- 流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
.flow::before { content: ''; position: absolute; top: 34px; left: 8%; right: 8%; height: 1px; background: repeating-linear-gradient(90deg, var(--c-line) 0 8px, transparent 8px 16px); }
.flow-step { text-align: center; position: relative; z-index: 2; }
.flow-dot {
  width: 68px; height: 68px; margin: 0 auto 20px; border-radius: 50%; background: #fff;
  border: 2px solid var(--c-line); display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 800; color: var(--c-primary); transition: all .35s var(--ease);
}
.flow-step:hover .flow-dot { background: var(--grad-brand); color: #fff; border-color: transparent; box-shadow: var(--sd-brand); transform: scale(1.08); }
.flow-step h4 { font-size: 17px; margin-bottom: 8px; }
.flow-step p { font-size: 13.5px; padding: 0 8px; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  border-radius: var(--rd-lg); overflow: hidden; background: #fff; border: 1px solid var(--c-line);
  transition: all .35s var(--ease); display: flex; flex-direction: column;
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--sd-lg); border-color: transparent; }
.case-thumb { height: 208px; overflow: hidden; background: var(--c-bg-soft); }
.case-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.case-card:hover .case-thumb img { transform: scale(1.07); }
.case-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.case-meta { font-size: 12.5px; color: var(--c-muted); margin-bottom: 10px; display: flex; gap: 12px; }
.case-meta em { font-style: normal; color: var(--c-primary); font-weight: 600; }
.case-body h3 { font-size: 18px; margin-bottom: 10px; }
.case-body p { font-size: 14px; flex: 1; }

/* ---------- 客户/伙伴 logo 墙 ---------- */
.logo-wall { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px; background: var(--c-line); border: 1px solid var(--c-line); border-radius: var(--rd-lg); overflow: hidden; }
.logo-cell { background: #fff; height: 108px; display: flex; align-items: center; justify-content: center; color: var(--c-muted); font-size: 14px; font-weight: 600; letter-spacing: .5px; transition: all .3s var(--ease); }
.logo-cell:hover { background: var(--c-bg-soft); color: var(--c-primary); }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 34px; }
.news-main { border-radius: var(--rd-lg); overflow: hidden; border: 1px solid var(--c-line); background: #fff; transition: all .35s var(--ease); }
.news-main:hover { box-shadow: var(--sd-lg); transform: translateY(-5px); border-color: transparent; }
.news-main-thumb { height: 300px; overflow: hidden; }
.news-main-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.news-main:hover .news-main-thumb img { transform: scale(1.05); }
.news-main-body { padding: 28px 30px 30px; }
.news-main-body h3 { font-size: 22px; margin-bottom: 12px; }
.news-list { display: flex; flex-direction: column; gap: 14px; }
.news-item { display: flex; gap: 18px; padding: 18px 20px; border: 1px solid var(--c-line); border-radius: var(--rd); background: #fff; transition: all .3s var(--ease); }
.news-item:hover { border-color: var(--c-primary); box-shadow: var(--sd-md); transform: translateX(5px); }
.news-date { flex-shrink: 0; width: 58px; text-align: center; border-right: 1px solid var(--c-line); padding-right: 14px; }
.news-date b { display: block; font-size: 24px; color: var(--c-primary); font-weight: 800; line-height: 1.1; }
.news-date span { font-size: 12px; color: var(--c-muted); }
.news-item-body h4 { font-size: 15.5px; margin-bottom: 5px; line-height: 1.45; }
.news-item-body p { font-size: 13px; color: var(--c-muted); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- CTA ---------- */
.cta { background: var(--grad-hero); color: #fff; position: relative; overflow: hidden; padding: 76px 0; }
.cta::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 82% 30%, rgba(0, 184, 217, .3), transparent 52%); }
.cta .container { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta h2 { color: #fff; font-size: 34px; letter-spacing: -.5px; }
.cta p { color: rgba(255, 255, 255, .74); margin-top: 12px; font-size: 16px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.footer { background: var(--c-bg-dark); color: rgba(255, 255, 255, .6); padding: 66px 0 0; font-size: 14px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.5fr; gap: 44px; padding-bottom: 48px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 20px; font-weight: 600; }
.footer-brand .logo-cn { color: #fff; }
.footer-brand .logo-en { color: rgba(255, 255, 255, .4); }
.footer-desc { margin: 20px 0 22px; font-size: 13.5px; line-height: 1.85; color: rgba(255, 255, 255, .55); }
.footer-social { display: flex; gap: 12px; }
.footer-social a { width: 38px; height: 38px; border-radius: 10px; background: rgba(255, 255, 255, .08); display: flex; align-items: center; justify-content: center; transition: all .3s var(--ease); }
.footer-social a:hover { background: var(--c-primary); transform: translateY(-3px); }
.footer-social svg { width: 18px; height: 18px; fill: none; stroke: rgba(255, 255, 255, .85); stroke-width: 1.7; }
.footer-links li { line-height: 2.5; }
.footer-links a { font-size: 13.5px; color: rgba(255, 255, 255, .58); }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact li { display: flex; gap: 12px; margin-bottom: 16px; font-size: 13.5px; line-height: 1.7; }
.footer-contact svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 4px; fill: none; stroke: var(--c-accent); stroke-width: 1.7; }
.footer-contact b { color: #fff; font-weight: 600; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 22px 0 26px; display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; font-size: 13px; color: rgba(255, 255, 255, .42); }
.footer-bottom a { color: rgba(255, 255, 255, .55); }
.footer-bottom a:hover { color: #fff; }
.footer-bottom-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---------- 页面横幅（内页） ---------- */
.page-hero { background: var(--grad-hero); color: #fff; padding: 68px 0 62px; position: relative; overflow: hidden; }
.page-hero::before { 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: 56px 56px; mask-image: radial-gradient(ellipse at 60% 40%, #000 5%, transparent 70%); }
.page-hero::after { content: ''; position: absolute; width: 560px; height: 560px; right: -140px; top: -240px; background: radial-gradient(circle, rgba(0,184,217,.3), transparent 66%); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: 40px; letter-spacing: -.6px; }
.page-hero p { color: rgba(255, 255, 255, .74); margin-top: 14px; font-size: 16px; max-width: 760px; }
.crumb { font-size: 13.5px; color: rgba(255, 255, 255, .55); margin-bottom: 16px; }
.crumb a:hover { color: #fff; }
.crumb span { margin: 0 8px; opacity: .5; }

/* ---------- 通用内容块 ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.prose h2 { font-size: 26px; margin-bottom: 18px; }
.prose p { margin-bottom: 16px; }
.prose strong { color: var(--c-title); }

.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: var(--c-line); }
.tl-item { position: relative; padding-bottom: 30px; }
.tl-item::before { content: ''; position: absolute; left: -34px; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 3px solid var(--c-primary); }
.tl-year { font-size: 14px; font-weight: 700; color: var(--c-primary); margin-bottom: 5px; }
.tl-item p { font-size: 14px; }

.info-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--rd-lg); padding: 30px; transition: all .3s var(--ease); }
.info-card:hover { box-shadow: var(--sd-md); border-color: transparent; }
.info-card h3 { font-size: 18px; margin-bottom: 10px; }
.info-card p { font-size: 14px; }

/* 联系表单 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--c-title); }
.field label i { color: #e5484d; font-style: normal; }
.field input, .field select, .field textarea {
  border: 1px solid var(--c-line); border-radius: 10px; padding: 12px 15px; font-size: 14.5px;
  color: var(--c-ink); background: #fff; transition: all .25s var(--ease); width: 100%;
}
.field textarea { min-height: 118px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--c-primary); box-shadow: 0 0 0 4px rgba(22, 82, 216, .1); }
.form-tip { font-size: 12.5px; color: var(--c-muted); margin-top: 14px; }

.contact-list li { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px dashed var(--c-line); }
.contact-list li:last-child { border-bottom: 0; }
.contact-ico { width: 44px; height: 44px; border-radius: 12px; background: rgba(22, 82, 216, .08); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-ico svg { width: 20px; height: 20px; fill: none; stroke: var(--c-primary); stroke-width: 1.7; }
.contact-list b { display: block; font-size: 13px; color: var(--c-muted); font-weight: 500; margin-bottom: 3px; }
.contact-list span { font-size: 15.5px; color: var(--c-title); font-weight: 600; }


/* 通知条 */
.notice { background: linear-gradient(90deg, rgba(22,82,216,.07), rgba(0,184,217,.07)); border-left: 3px solid var(--c-primary); border-radius: 0 var(--rd) var(--rd) 0; padding: 16px 22px; font-size: 14px; margin-bottom: 30px; }
.notice b { color: var(--c-primary); }

/* 回到顶部 */
.to-top {
  position: fixed; right: 26px; bottom: 30px; width: 46px; height: 46px; border-radius: 14px;
  background: #fff; box-shadow: var(--sd-lg); display: flex; align-items: center; justify-content: center;
  cursor: pointer; opacity: 0; visibility: hidden; transition: all .3s var(--ease); z-index: 800; border: 1px solid var(--c-line);
}
.to-top.is-on { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--c-primary); border-color: var(--c-primary); }
.to-top svg { width: 20px; height: 20px; stroke: var(--c-primary); }
.to-top:hover svg { stroke: #fff; }

/* 侧边悬浮咨询 */
.side-float { position: fixed; right: 26px; bottom: 92px; z-index: 800; display: flex; flex-direction: column; gap: 10px; }
.side-float a { width: 46px; height: 46px; border-radius: 14px; background: #fff; border: 1px solid var(--c-line); box-shadow: var(--sd-md); display: flex; align-items: center; justify-content: center; transition: all .3s var(--ease); position: relative; }
.side-float a:hover { background: var(--grad-brand); border-color: transparent; transform: translateX(-4px); }
.side-float svg { width: 20px; height: 20px; fill: none; stroke: var(--c-primary); stroke-width: 1.7; }
.side-float a:hover svg { stroke: #fff; }
.side-float a::after {
  content: attr(data-tip); position: absolute; right: calc(100% + 10px); top: 50%; transform: translateY(-50%);
  background: var(--c-ink); color: #fff; font-size: 12.5px; padding: 6px 12px; border-radius: 8px;
  white-space: nowrap; opacity: 0; visibility: hidden; transition: all .25s var(--ease);
}
.side-float a:hover::after { opacity: 1; visibility: visible; }

/* ---------- 入场动画（渐进增强：仅在有 JS 时启用隐藏） ---------- */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }
.js .reveal[data-d="1"] { transition-delay: .08s; }
.js .reveal[data-d="2"] { transition-delay: .16s; }
.js .reveal[data-d="3"] { transition-delay: .24s; }
.js .reveal[data-d="4"] { transition-delay: .32s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .biz-grid, .grid-4, .logo-wall { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .flow::before { display: none; }
  .sol-grid, .case-grid, .adv-grid, .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 42px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
  .logo-wall { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 992px) {
  .topbar-left span:nth-child(n+2) { display: none; }
  .menu, .nav-phone { display: none; }
  .burger { display: flex; }
  .nav-cta { margin-left: auto; }
  .hero-inner, .svc-layout, .grid-2, .news-grid { grid-template-columns: 1fr; }
  .hero-inner { padding: 56px 0 64px; }
  .hero h1 { font-size: 34px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.12); }
  /* 移动端菜单 */
  .menu.is-open {
    display: flex; flex-direction: column; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: #fff; padding: 90px 24px 40px; gap: 0; overflow-y: auto; z-index: 950; margin: 0;
  }
  .menu.is-open > li { width: 100%; border-bottom: 1px solid var(--c-line); }
  .menu.is-open > li > a { padding: 16px 4px; font-size: 17px; }
  .menu.is-open > li > a.is-active::after { display: none; }
  .submenu { position: static; transform: none; opacity: 1; visibility: visible; box-shadow: none; border: 0; padding: 0 0 12px 14px; display: none; }
  .menu > li:hover .submenu { transform: none; }
  .menu.is-open > li.is-expand .submenu { display: block; }
  .section { padding: 64px 0; }
  .sec-title { font-size: 28px; }
  .page-hero h1 { font-size: 30px; }
}
@media (max-width: 768px) {
  .biz-grid, .sol-grid, .case-grid, .adv-grid, .grid-3, .grid-4, .svc-items, .form-grid { grid-template-columns: 1fr; }
  .logo-wall { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: 1fr; }
  .hero-stats { gap: 26px; }
  .hero-stats b { font-size: 26px; }
  .cta .container { flex-direction: column; align-items: flex-start; }
  .cta h2 { font-size: 26px; }
  .footer-top { grid-template-columns: 1fr; }
  .side-float { display: none; }
  .section { padding: 52px 0; }
  .biz-card p { min-height: auto; }
  .svc-img img { height: 260px; }
  /* 顶部信息条：仅保留热线 */
  .topbar { height: 34px; font-size: 12px; }
  .topbar-left, .topbar-right span, .topbar-right a[href^="mailto"] { display: none; }
  .topbar .container { justify-content: flex-end; }
}
@media (max-width: 576px) {
  .nav-cta .btn { display: none; }
  .logo { gap: 8px; }
  .logo-mark { width: 36px; height: 36px; }
  .logo-cn { font-size: 17px; }
  .logo-en { letter-spacing: 1.8px; }
  .burger { width: 38px; height: 38px; }
  .hero h1 { font-size: 27px; }
  .hero-desc { font-size: 15px; }
  .hero-panel { padding: 16px; }
  .hero-panel-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .sec-title { font-size: 24px; }
  .page-hero { padding: 46px 0 44px; }
  .page-hero h1 { font-size: 25px; }
}

/* ---------- 图标补充 ---------- */
.adv-num svg { width: 22px; height: 22px; }
.sec-head .btn svg { stroke: currentColor; }
.news-item-body h4 { color: var(--c-title); }

/* ==========================================================================
   报价 / 流程 / 客户群体 等扩展组件
   ========================================================================== */
.price-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.price-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--rd-lg);
  padding: 28px 26px; transition: all .3s var(--ease); display: flex; flex-direction: column;
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--sd-lg); border-color: transparent; }
.price-cat { align-self: flex-start; font-size: 12px; font-weight: 600; color: var(--c-primary); background: rgba(22, 82, 216, .08); padding: 4px 12px; border-radius: 999px; margin-bottom: 16px; }
.price-card h3 { font-size: 17px; margin-bottom: 12px; }
.price-num { font-size: 34px; font-weight: 800; color: var(--c-title); letter-spacing: -1px; line-height: 1.1; margin-bottom: 12px; }
.price-num i { font-style: normal; font-size: 18px; color: var(--c-primary); margin-right: 2px; }
.price-num span { font-size: 13px; color: var(--c-muted); font-weight: 500; letter-spacing: 0; margin-left: 4px; }
.price-card p { font-size: 13.5px; flex: 1; }
.price-more { margin-top: 16px; font-size: 13px; font-weight: 600; color: var(--c-primary); }
.price-more::after { content: ' →'; }

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--rd-lg); box-shadow: var(--sd-sm); border: 1px solid var(--c-line); }
.price-table { width: 100%; border-collapse: collapse; background: #fff; min-width: 640px; }
.price-table th { background: var(--c-primary-deep); color: #fff; font-size: 14px; font-weight: 600; padding: 15px 18px; text-align: left; white-space: nowrap; }
.price-table td { padding: 14px 18px; border-bottom: 1px solid var(--c-line); font-size: 14px; color: var(--c-body); vertical-align: top; line-height: 1.65; }
.price-table tbody tr:last-child td { border-bottom: 0; }
.price-table tbody tr:nth-child(even) td { background: #f8fafd; }
.price-table td.p-name { color: var(--c-title); font-weight: 600; white-space: nowrap; }
.price-table td.p-price { color: var(--c-primary); font-weight: 700; white-space: nowrap; }
.price-table td.p-way { white-space: nowrap; color: var(--c-muted); }

.steps { display: grid; grid-template-columns: repeat(7, 1fr); gap: 14px; }
.step {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--rd);
  padding: 22px 14px 20px; text-align: center; transition: all .3s var(--ease); position: relative;
}
.step:hover { border-color: var(--c-primary); box-shadow: var(--sd-md); transform: translateY(-4px); }
.step-no { width: 30px; height: 30px; border-radius: 50%; background: rgba(22, 82, 216, .09); color: var(--c-primary); font-size: 13px; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; }
.step h4 { font-size: 15px; margin-bottom: 5px; }
.step p { font-size: 12.5px; color: var(--c-muted); line-height: 1.6; }

.audience { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.audience span {
  background: #fff; border: 1px solid var(--c-line); border-radius: 999px; padding: 12px 26px;
  font-size: 15px; font-weight: 600; color: var(--c-title); transition: all .3s var(--ease);
}
.audience span:hover { border-color: var(--c-primary); color: var(--c-primary); box-shadow: var(--sd-md); transform: translateY(-3px); }

.promise { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.promise-item { background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .14); border-radius: var(--rd); padding: 24px 20px; text-align: center; transition: all .3s var(--ease); }
.promise-item:hover { background: rgba(255, 255, 255, .13); transform: translateY(-4px); border-color: rgba(127, 216, 255, .4); }
.promise-item b { display: block; font-size: 17px; color: #fff; margin-bottom: 6px; }
.promise-item span { font-size: 13px; color: rgba(255, 255, 255, .66); }

.hero-card--wide { grid-column: 1 / -1; display: flex; align-items: center; gap: 14px; }
.hero-card--wide svg { margin-bottom: 0; flex-shrink: 0; }
.hero-card--wide b { margin-bottom: 2px; }
.hero-card--wide p { font-size: 12.5px; }

.qr-box { display: flex; gap: 16px; align-items: center; background: var(--c-bg-soft); border: 1px dashed var(--c-line); border-radius: var(--rd); padding: 18px; }
.qr-slot { width: 96px; height: 96px; border-radius: 12px; background: #fff; border: 1px solid var(--c-line); display: flex; align-items: center; justify-content: center; font-size: 11.5px; color: var(--c-muted); text-align: center; flex-shrink: 0; }

@media (max-width: 1180px) {
  .price-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(4, 1fr); }
  .promise { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .price-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .promise { grid-template-columns: 1fr; }
}

/* ---------- 微信二维码悬浮卡片（页脚） ---------- */
.qr-pop { position: relative; display: inline-flex; }
.qr-pop .qr-pop-img {
  position: absolute; bottom: calc(100% + 12px); left: 50%; transform: translateX(-50%) translateY(6px);
  width: 140px; height: 140px; object-fit: cover; border-radius: 12px;
  border: 4px solid #fff; box-shadow: var(--sd-lg);
  opacity: 0; pointer-events: none; transition: opacity .25s var(--ease), transform .25s var(--ease);
}
.qr-pop:hover .qr-pop-img, .qr-pop:focus-visible .qr-pop-img { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0); }
img.qr-slot { object-fit: cover; border-radius: 10px; }

/* ---------- 404 页 ---------- */
.notfound { text-align: center; max-width: 760px; margin: 0 auto; }
.notfound-code {
  font-size: 108px; font-weight: 800; line-height: 1; letter-spacing: -3px;
  background: linear-gradient(96deg, var(--c-primary), #22d3a6);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.notfound h3 { font-size: 22px; margin: 12px 0 10px; }
.notfound p { font-size: 15px; color: var(--c-body); }