/* =============================================================
   OpsManager 官网 - 样式表
   泓森启源（北京）科技有限公司
   设计原则：浅色企业风 / 极简高密度 / 一致性
   ============================================================= */

/* ---------- 设计令牌 ---------- */
:root {
  /* 品牌色 */
  --colorPrimary: #2563EB;       /* 主色：科技蓝 */
  --colorPrimaryDark: #1D4ED8;
  --colorPrimarySoft: #EFF4FE;
  --gradPrimary: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
  /* 中性色 */
  --colorInk: #0F172A;           /* 标题文字 */
  --colorBody: #334155;          /* 正文 */
  --colorMuted: #64748B;         /* 辅助说明 */
  --colorLine: #E2E8F0;          /* 分割线 / 描边 */
  --colorBg: #FFFFFF;
  --colorBgSoft: #F6F8FC;        /* 交替分区底色 */
  /* 语义色 */
  --colorOk: #16A34A;
  --colorWarn: #D97706;
  --colorInfo: #2563EB;
  /* 尺寸与圆角 */
  --radiusSm: 8px;
  --radiusMd: 12px;
  --radiusLg: 16px;
  /* 阴影 */
  --shadowCard: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06);
  --shadowLift: 0 12px 32px rgba(29, 78, 216, .18);
  /* 布局 */
  --navH: 68px;
  --secPad: clamp(64px, 9vw, 112px);
  --containerW: 1160px;
}

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

html {
  scroll-behavior: smooth;                /* 锚点平滑滚动 */
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--colorBody);
  background: var(--colorBg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* 锚点定位时预留导航高度 */
section[id] { scroll-margin-top: calc(var(--navH) + 12px); }

/* 无障碍跳转链接 */
.skipLink {
  position: absolute; left: -999px; top: 0;
  z-index: 100; padding: 10px 18px;
  background: var(--colorInk); color: #fff; border-radius: 0 0 8px 0;
}
.skipLink:focus { left: 0; }

/* ---------- 通用容器与按钮 ---------- */
.container { width: min(var(--containerW), 92%); margin-inline: auto; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; font-weight: 600; font-size: 15px;
  line-height: 1.4; white-space: nowrap; border: 1px solid transparent;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn:active { transform: translateY(1px); }
.btnSm { padding: 9px 20px; font-size: 14px; }
.btnLg { padding: 14px 30px; font-size: 16px; }
.btnBlock { width: 100%; }

.btnPrimary { background: var(--gradPrimary); color: #fff; box-shadow: 0 8px 20px rgba(37, 99, 235, .3); }
.btnPrimary:hover { box-shadow: var(--shadowLift); transform: translateY(-2px); }

.btnGhost { background: #fff; color: var(--colorPrimaryDark); border-color: #CBD5E1; }
.btnGhost:hover { border-color: var(--colorPrimary); color: var(--colorPrimary); transform: translateY(-2px); }

.btnGhostLight { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.45); backdrop-filter: blur(4px); }
.btnGhostLight:hover { background: rgba(255,255,255,.22); transform: translateY(-2px); }

.btnWhite { background: #fff; color: var(--colorPrimaryDark); box-shadow: 0 8px 24px rgba(2, 20, 60, .25); }
.btnWhite:hover { transform: translateY(-2px); }

/* ---------- 区块标题 ---------- */
.section { padding-block: var(--secPad); }
.section.secAlt { background: var(--colorBgSoft); }

.secHead { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.secHead h2 {
  font-size: clamp(1.55rem, 2.6vw, 2.15rem); line-height: 1.35; color: var(--colorInk);
  margin: 14px 0 14px; font-weight: 700; letter-spacing: .5px;
}
.secSub { color: var(--colorMuted); font-size: 16px; }
.secHead .secSub { max-width: 640px; margin-inline: auto; }

/* 小节标签：短横线 + 主色点缀文字 */
.kicker {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; font-weight: 600; color: var(--colorPrimaryDark); letter-spacing: .14em;
}
.kicker i { width: 20px; height: 2px; border-radius: 2px; background: var(--gradPrimary); }
.kickerLight { color: rgba(255,255,255,.9); }
.kickerLight i { background: #fff; }

/* ---------- 卡片基类 ---------- */
.card {
  background: var(--colorBg); border: 1px solid var(--colorLine);
  border-radius: var(--radiusLg); padding: 28px 26px;
  box-shadow: var(--shadowCard); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadowLift); border-color: #C7D7F8; }

.cardIcon {
  display: inline-flex; width: 48px; height: 48px; border-radius: 12px;
  align-items: center; justify-content: center; margin-bottom: 18px;
  color: var(--colorPrimary); background: var(--colorPrimarySoft);
}
.cardIcon svg { width: 26px; height: 26px; }

/* ---------- 顶部导航 ---------- */
.siteNav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .25s ease, box-shadow .25s ease;
}
.navInner { display: flex; align-items: center; height: var(--navH); gap: 24px; }

/* 导航滚动后白底 */
.siteNav.isScrolled { background: rgba(255,255,255,.88); backdrop-filter: blur(12px); box-shadow: 0 1px 0 var(--colorLine); }

/* 品牌区 */
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brandLogo { width: 34px; height: 34px; }
.brandText { display: flex; flex-direction: column; line-height: 1.25; }
.brandText strong { font-size: 16.5px; color: var(--colorInk); font-weight: 700; letter-spacing: .5px; }
.brandText small { font-size: 11px; color: var(--colorMuted); letter-spacing: .4px; }

/* 菜单 */
.navMenu { margin-left: auto; }
.navList { display: flex; gap: 6px; }
.navLink {
  display: block; padding: 8px 13px; font-size: 14.5px; font-weight: 500; color: #475569;
  border-radius: 8px; transition: color .2s ease, background .2s ease;
}
.navLink:hover { color: var(--colorPrimary); }
.navList .navLink.isActive { color: var(--colorPrimaryDark); background: var(--colorPrimarySoft); font-weight: 600; }

.navAction { margin-left: 6px; }

/* 汉堡按钮 */
.navToggle {
  display: none; flex-direction: column; gap: 5px; width: 40px; height: 40px;
  margin-left: auto; padding: 9px; border: 1px solid var(--colorLine);
  border-radius: 10px; background: #fff;
}
.navToggle span { height: 2px; border-radius: 2px; background: var(--colorInk); transition: transform .25s ease, opacity .25s ease; }
.navToggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navToggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.navToggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首屏 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: calc(var(--navH) + clamp(48px, 7vw, 88px)) 0 clamp(56px, 7vw, 88px);
  background: linear-gradient(180deg, #F3F7FF 0%, #FDFEFF 62%, #fff 100%);
}
/* 背景装饰：光晕 + 网格 */
.heroBg { position: absolute; inset: 0; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .55; }
.blobA { width: 520px; height: 520px; top: -180px; right: -120px; background: radial-gradient(circle, rgba(96,165,250,.35), transparent 70%); }
.blobB { width: 460px; height: 460px; bottom: -220px; left: -160px; background: radial-gradient(circle, rgba(59,130,246,.18), transparent 70%); }
.gridLine {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(37,99,235,.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(37,99,235,.05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 70% 20%, #000 30%, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 60% at 70% 20%, #000 30%, transparent 75%);
}

.heroInner {
  position: relative; display: grid; align-items: center; gap: 56px;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
}
.heroCopy h1 {
  margin: 20px 0 20px; font-size: clamp(2rem, 4.4vw, 3.25rem); line-height: 1.28;
  font-weight: 800; color: var(--colorInk); letter-spacing: .5px;
}
.heroCopy h1 em { font-style: normal; color: var(--colorMuted); }
.gradText {
  background: var(--gradPrimary);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.heroSub { max-width: 560px; font-size: 17px; color: var(--colorMuted); }
.heroActions { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 26px; }

/* 首屏信任要点 */
.heroTrust { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.heroTrust li { display: inline-flex; align-items: center; gap: 7px; font-size: 13.5px; color: var(--colorMuted); font-weight: 500; }
.heroTrust svg { width: 15px; height: 15px; color: var(--colorOk); flex: none; }

/* ---------- 界面示意（Mock 面板） ---------- */
.heroVisual { position: relative; }
.mockPanel {
  border: 1px solid #E3EAF7; border-radius: 18px; background: #fff;
  box-shadow: 0 30px 70px -20px rgba(29, 78, 216, .28);
  overflow: hidden;
}
.mockBar { display: flex; align-items: center; gap: 6px; padding: 12px 16px; background: #F8FAFD; border-bottom: 1px solid var(--colorLine); }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dotR { background: #F87171; } .dotY { background: #FBBF24; } .dotG { background: #34D399; }
.mockUrl { margin-inline: auto; font-size: 12px; color: var(--colorMuted); background: #EDF1F7; padding: 3px 14px; border-radius: 999px; }

.mockBody { padding: 20px; display: grid; gap: 18px; }
.mockStats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.mockStat {
  display: flex; flex-direction: column; gap: 2px; padding: 14px 16px;
  border: 1px solid var(--colorLine); border-radius: var(--radiusMd); background: #FBFCFF;
}
.mockNum { font-size: 22px; font-weight: 800; color: var(--colorPrimaryDark); font-variant-numeric: tabular-nums; line-height: 1.2; }
.mockLabel { font-size: 12px; color: var(--colorMuted); }

.mockMain { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; align-items: stretch; }
.mockChart { padding: 16px 16px 10px; border: 1px solid var(--colorLine); border-radius: var(--radiusMd); background: #FBFCFF; }
.mockTitle { font-size: 13px; font-weight: 600; color: var(--colorInk); margin-bottom: 4px; }
.chartSvg { width: 100%; height: 128px; display: block; }
.chartGrid line { stroke: #EEF2F8; stroke-width: 1; }
.chartLine { fill: none; stroke: var(--colorPrimary); stroke-width: 2.6; stroke-linecap: round; }
.chartLegend { display: flex; align-items: center; gap: 7px; font-size: 12px; color: var(--colorMuted); margin-top: 2px; }
.legendDot { width: 8px; height: 8px; border-radius: 3px; background: var(--colorPrimary); }
.chartLegend em { font-style: normal; font-weight: 700; color: var(--colorPrimaryDark); margin-left: auto; }

.mockFeed { display: flex; flex-direction: column; gap: 10px; }
.mockFeed li {
  flex: 1; display: flex; align-items: center; gap: 9px;
  font-size: 12.5px; color: #475569; background: #FBFCFF;
  border: 1px solid var(--colorLine); border-radius: var(--radiusMd); padding: 0 12px;
}
.feedDot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.feedDot.ok { background: var(--colorOk); } .feedDot.info { background: var(--colorInfo); } .feedDot.warn { background: var(--colorWarn); }

/* 悬浮提示气泡 */
.floatChip {
  position: absolute; z-index: 2; display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 14px; font-size: 12.5px; font-weight: 600; color: var(--colorInk);
  background: #fff; border: 1px solid #E3EAF7; border-radius: 999px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, .12); white-space: nowrap;
}
.floatChip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--colorOk); box-shadow: 0 0 0 4px rgba(22,163,74,.15); }
.chipA { top: -16px; right: 6px; }
.chipB { bottom: -15px; left: -18px; }
.chipB::before { background: var(--colorInfo); box-shadow: 0 0 0 4px rgba(37,99,235,.14); }

/* ---------- 痛点卡片 ---------- */
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.painCard h3 { font-size: 18px; color: var(--colorInk); margin-bottom: 8px; }
.painCard p { font-size: 14px; color: var(--colorMuted); }

/* ---------- 能力卡片 ---------- */
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.featCard { position: relative; }
.featCard h3 { font-size: 18px; color: var(--colorInk); margin-bottom: 8px; }
.featCard p { font-size: 14.5px; color: var(--colorMuted); }
/* 模块序号角标：F01-F06 */
.featCard::after {
  content: attr(data-no); position: absolute; top: 24px; right: 26px;
  font-size: 12px; font-weight: 700; color: #BFD3F8; letter-spacing: .1em;
}

/* ---------- 场景价值 ---------- */
.valueGrid { gap: 24px; align-items: stretch; }
.roleCard { display: flex; flex-direction: column; }
.roleTag {
  align-self: flex-start; padding: 4px 12px; margin-bottom: 16px;
  font-size: 12.5px; font-weight: 600; color: var(--colorPrimaryDark);
  background: var(--colorPrimarySoft); border-radius: 999px;
}
.roleCard h3 { font-size: 19px; color: var(--colorInk); margin-bottom: 18px; line-height: 1.5; }
.roleList { display: grid; gap: 12px; }
.roleList li {
  position: relative; padding-left: 20px; font-size: 14.5px; color: var(--colorBody);
}
.roleList li::before {
  content: ""; position: absolute; left: 0; top: .62em;
  width: 7px; height: 7px; border-radius: 2px; background: var(--gradPrimary); transform: rotate(45deg);
}

/* ---------- 服务流程时间轴 ---------- */
.timeline {
  position: relative; display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 22px; margin-bottom: 40px;
}
/* 顶部连接主线 */
.timeline::before {
  content: ""; position: absolute; top: 27px; left: 7%; right: 7%; height: 2px;
  background: linear-gradient(90deg, #DBE7FC, #2563EB, #DBE7FC);
  border-radius: 2px;
}
.step { position: relative; text-align: left; padding: 0 6px; }
.stepNum {
  position: relative; z-index: 1; display: inline-flex; align-items: center; justify-content: center;
  width: 54px; height: 54px; margin-bottom: 18px; border-radius: 16px;
  background: var(--gradPrimary); color: #fff; font-size: 17px; font-weight: 800;
  box-shadow: 0 10px 22px rgba(37, 99, 235, .32); letter-spacing: .5px;
}
.stepPhase { display: block; font-size: 18px; font-weight: 700; color: var(--colorInk); margin-bottom: 4px; }
.stepDur {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--colorPrimaryDark);
  background: var(--colorPrimarySoft); border-radius: 999px; padding: 2px 12px; margin-bottom: 12px;
}
.stepDesc { font-size: 14px; color: var(--colorBody); }
.stepDeliver {
  margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--colorLine);
  font-size: 13px; color: var(--colorMuted);
}
.stepDeliver::before { content: "交付 "; color: var(--colorPrimary); font-weight: 600; }

/* 护航说明条 */
.callout {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 24px 28px; border-radius: var(--radiusLg);
  background: linear-gradient(120deg, #F0F6FF, #EAF2FF);
  border: 1px solid #D8E6FB;
}
.calloutIcon {
  flex: none; width: 44px; height: 44px; border-radius: 12px; display: inline-flex;
  align-items: center; justify-content: center; color: #fff; background: var(--gradPrimary);
}
.calloutIcon svg { width: 22px; height: 22px; }
.calloutBody h3 { font-size: 16.5px; color: var(--colorInk); margin-bottom: 6px; }
.calloutBody p { font-size: 14.5px; color: var(--colorMuted); }
.calloutBody strong { color: var(--colorPrimaryDark); }

/* ---------- 服务保障 ---------- */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
.guardCard h3 { font-size: 19px; color: var(--colorInk); margin-bottom: 22px; }

.markList { display: grid; gap: 18px; }
.markList li { display: flex; gap: 12px; align-items: flex-start; }
.markList .ok { color: var(--colorOk); font-size: 16px; font-weight: 800; line-height: 1.5; flex: none; }
.markList strong { display: block; font-size: 15.5px; color: var(--colorInk); }
.markList p { font-size: 13.5px; color: var(--colorMuted); }

.boundWrap { display: grid; gap: 16px; }
.boundSide { padding: 16px 18px; border-radius: var(--radiusMd); }
.boundOwn { background: #F0FDF4; border: 1px solid #BBF7D0; }
.boundNot { background: #FFFBF5; border: 1px solid #FDE9C8; }
.boundTitle { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--colorInk); margin-bottom: 10px; }
.boundTitle .ok { color: var(--colorOk); } .boundTitle .no { color: var(--colorWarn); font-style: normal; }
.boundSide ul { display: grid; gap: 7px; }
.boundSide li { position: relative; padding-left: 16px; font-size: 13.5px; color: var(--colorBody); }
.boundSide li::before { content: "·"; position: absolute; left: 2px; color: var(--colorMuted); }

/* ---------- 为什么选择 ---------- */
.whyGrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 24px; }
.whyItem { display: flex; gap: 18px; padding: 24px; background: #fff; border: 1px solid var(--colorLine); border-radius: var(--radiusMd); transition: transform .2s ease, box-shadow .2s ease; }
.whyItem:hover { transform: translateY(-3px); box-shadow: var(--shadowCard); }
.whyNum {
  flex: none; font-size: 26px; font-weight: 800; line-height: 1.1;
  color: transparent; -webkit-text-stroke: 1.5px #A5C3F5;
}
.whyItem h3 { font-size: 17px; color: var(--colorInk); margin-bottom: 6px; }
.whyItem p { font-size: 14px; color: var(--colorMuted); }

/* ---------- 定价 ---------- */
.pricingGrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.priceCard { position: relative; display: flex; flex-direction: column; padding: 34px 30px 30px; }
.priceCard h3 { font-size: 18px; color: var(--colorInk); margin-bottom: 10px; line-height: 1.5; }
.priceDesc { font-size: 14px; color: var(--colorMuted); min-height: 44px; }
.price { margin: 18px 0 2px; font-size: 15px; color: var(--colorMuted); display: flex; align-items: baseline; gap: 4px; }
.price strong { font-size: 40px; font-weight: 800; color: var(--colorInk); font-variant-numeric: tabular-nums; letter-spacing: -1px; }
.priceNote { font-size: 12.5px; color: var(--colorMuted); margin-bottom: 18px; }
.priceList { display: grid; gap: 10px; margin-bottom: 26px; }
.priceList li { position: relative; padding-left: 22px; font-size: 14px; color: var(--colorBody); }
.priceList li::before {
  content: ""; position: absolute; left: 0; top: .58em; width: 12px; height: 6px;
  border-left: 2px solid var(--colorPrimary); border-bottom: 2px solid var(--colorPrimary);
  transform: rotate(-45deg);
}
.priceCard .btn { margin-top: auto; }

/* 主推卡 */
.priceHot {
  background: linear-gradient(180deg, #F5F9FF, #fff 40%);
  border: 2px solid var(--colorPrimary); box-shadow: 0 18px 44px -14px rgba(37, 99, 235, .35);
  transform: translateY(-8px);
}
.hotTag {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--gradPrimary); color: #fff; font-size: 12.5px; font-weight: 600;
  padding: 3px 16px; border-radius: 999px; box-shadow: 0 6px 14px rgba(37,99,235,.35); white-space: nowrap;
}
.priceHot .price strong { color: var(--colorPrimaryDark); }

/* 付款说明 */
.payNote { margin-top: 44px; text-align: center; }
.payHint { font-size: 13px; color: var(--colorMuted); margin-bottom: 22px; }
.paySteps { display: flex; justify-content: center; margin-bottom: 12px; }
.payStep {
  position: relative; flex: 1; max-width: 200px; font-size: 13.5px; color: var(--colorMuted);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.payStep i {
  font-style: normal; font-weight: 800; font-size: 22px; color: var(--colorPrimaryDark);
  background: var(--colorPrimarySoft); border-radius: 12px; padding: 8px 22px;
}
.payStep:not(:last-child)::after {
  content: ""; position: absolute; top: 20px; left: calc(50% + 60px); right: calc(-50% + 60px);
  height: 2px; background: repeating-linear-gradient(90deg, #BFD3F8 0 8px, transparent 8px 14px);
}
.payHint2 { font-size: 13px; color: var(--colorMuted); }

/* ---------- 常见问题 FAQ（details/summary 无 JS 渐进增强） ---------- */
.faqList { max-width: 860px; margin: 0 auto; display: grid; gap: 12px; }
.faqItem {
  background: #fff; border: 1px solid var(--colorLine); border-radius: var(--radiusMd);
  box-shadow: var(--shadowCard); padding: 0 24px;
}
.faqItem[open] { border-color: #C7D7F8; }
.faqItem summary {
  display: flex; align-items: center; gap: 12px; cursor: pointer; user-select: none;
  list-style: none; padding: 17px 0; font-size: 15.5px; font-weight: 600; color: var(--colorInk);
}
.faqItem summary::-webkit-details-marker { display: none; }
/* Q 角标 */
.faqItem summary::before {
  content: "Q"; flex: none; display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border-radius: 8px;
  background: var(--colorPrimarySoft); color: var(--colorPrimaryDark); font-size: 12.5px; font-weight: 800;
}
/* 展开/收起指示：加号旋转 45° 变为乘号 */
.faqItem summary::after {
  content: "+"; flex: none; margin-left: auto; font-size: 20px; font-weight: 400; line-height: 1;
  color: var(--colorPrimaryDark); transition: transform .2s ease;
}
.faqItem[open] summary::after { transform: rotate(45deg); }
.faqAns { border-top: 1px dashed var(--colorLine); padding: 14px 0 18px; }
.faqAns p { font-size: 14.5px; color: var(--colorBody); }
.faqAns p + p { margin-top: 8px; }

/* 正文内强调链接（常见于 FAQ 引导入口） */
.textLink { color: var(--colorPrimaryDark); font-weight: 600; }
.textLink:hover { text-decoration: underline; }

/* ---------- 联系我们 CTA ---------- */
.contactSec { background: var(--colorBgSoft); }
.contactPanel {
  position: relative; overflow: hidden; display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px;
  align-items: center; padding: clamp(40px, 6vw, 72px);
  border-radius: 24px; color: #fff;
  background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 60%, #3B82F6 100%);
}
/* 右上装饰光 */
.ctaGlow { position: absolute; width: 460px; height: 460px; right: -160px; top: -200px; border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,.22), transparent 65%); pointer-events: none; }
.ctaCopy { position: relative; }
.ctaCopy h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); color: #fff; margin: 16px 0 14px; line-height: 1.4; font-weight: 800; }
.ctaCopy p { color: rgba(255,255,255,.85); font-size: 15.5px; max-width: 500px; }
.ctaActions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }

.contactList { position: relative; display: grid; gap: 22px; }
.contactList li { display: flex; gap: 14px; align-items: flex-start; }
.contactIcon {
  flex: none; width: 44px; height: 44px; border-radius: 12px; display: inline-flex;
  align-items: center; justify-content: center; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.18);
}
.contactIcon svg { width: 21px; height: 21px; }
.contactLabel { font-size: 12px; color: rgba(255,255,255,.6); line-height: 1.4; }
.contactValue { font-size: 15.5px; color: #fff; font-weight: 600; word-break: break-all; }
.contactList a.contactValue:hover { text-decoration: underline; }

/* ---------- 页脚 ---------- */
.siteFooter { background: #0B1220; color: #9AA7BC; }
.footerInner {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; padding: 54px 0 40px;
}
.footerBrand .brandText strong { color: #fff; }
.footerBrand .brandText small { color: #7C8AA3; }
.footerBrand p { margin-top: 16px; font-size: 14px; max-width: 320px; line-height: 1.8; }
.footerNav { display: flex; flex-direction: column; gap: 12px; }
.footerNav a { font-size: 14px; transition: color .2s ease; }
.footerNav a:hover { color: #fff; }
.footerContact { display: flex; flex-direction: column; gap: 12px; }
.footerContact a { font-size: 14px; transition: color .2s ease; }
.footerContact a:hover { color: #fff; }
.footerBottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 0; }
.footerBottom .container { display: flex; flex-wrap: wrap; gap: 6px 24px; align-items: center; justify-content: space-between; }
.footerBottom p { font-size: 12.5px; color: #66748C; }
.footerBottom .icp { color: #55627A; }

/* ---------- 进场动画 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease var(--d, 0s), transform .6s ease var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .heroInner { grid-template-columns: 1fr; gap: 64px; }
  .grid4 { grid-template-columns: repeat(2, 1fr); }
  .grid3 { grid-template-columns: repeat(2, 1fr); }
  .pricingGrid { grid-template-columns: 1fr; max-width: 520px; margin-inline: auto; }
  .priceHot { transform: none; order: -1; }
  .mockMain { grid-template-columns: 1fr; }
  .mockFeed { flex-direction: row; flex-wrap: wrap; }
  .mockFeed li { flex: 1 1 40%; padding: 10px 12px; }
  .contactPanel { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  /* 移动端导航抽屉 */
  .navToggle { display: flex; }
  .navMenu {
    position: fixed; top: var(--navH); right: 0; bottom: 0; width: min(320px, 84vw);
    margin-left: 0; background: #fff; box-shadow: -12px 0 32px rgba(15, 23, 42, .12);
    transform: translateX(100%); transition: transform .28s ease; padding: 18px;
    overflow-y: auto;
  }
  .navMenu.isOpen { transform: translateX(0); }
  .navList { flex-direction: column; gap: 4px; }
  .navLink { padding: 12px 14px; font-size: 16px; border-radius: 10px; }
  .navAction { display: none; }

  .timeline { grid-template-columns: 1fr; gap: 26px; }
  .timeline::before { display: none; }
  .step { padding-left: 26px; }
  .step::before {
    content: ""; position: absolute; left: -14px; top: 27px; bottom: -40px; width: 2px;
    background: linear-gradient(180deg, #DBE7FC, #2563EB);
  }
  .step:last-child::before { display: none; }

  .grid2, .whyGrid, .footerInner { grid-template-columns: 1fr; }
  .heroVisual { max-width: 560px; margin-inline: auto; }
  .callout { flex-direction: column; }
}

@media (max-width: 620px) {
  .grid4, .grid3 { grid-template-columns: 1fr; }
  .heroTrust { flex-direction: column; gap: 8px; }
  .heroActions .btn { flex: 1; }
  .mockStats { grid-template-columns: 1fr 1fr; }
  .floatChip { display: none; }
  .footerBottom .container { flex-direction: column; align-items: flex-start; gap: 4px; }
}

/* ---------- 减弱动画偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card, .whyItem { transition: none; }
}