/* ============================================================
   PCBA 官网 高保真皮肤 v2（参考 Kingford 视觉语言）
   深蓝导航 + 全幅实景图 + 图文密集排版
   配色为参考站近似采样值（candidate，待用户签收）
   ============================================================ */

:root {
  --k-navy: #0d2b52;        /* 顶部条/深底 */
  --k-navy-2: #103863;      /* 深蓝渐变 */
  --k-blue: #1a6fd4;        /* 主按钮蓝 */
  --k-blue-hover: #155cb5;
  --k-cyan: #35b6c9;        /* 对勾/点缀青 */
  --k-ink: #222a35;
  --k-muted: #5b6572;
  --k-line: #e3e8ee;
  --k-surface: #f4f7fa;
  --k-red: #d43d2a;         /* 正文重点红 */
  --k-radius: 4px;
  --k-container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px; line-height: 1.75; color: var(--k-ink); background: #fff;
}
img { max-width: 100%; height: auto; vertical-align: middle; }
a { color: var(--k-blue); text-decoration: none; }
a:hover { color: var(--k-blue-hover); }
h1 { font-size: 44px; line-height: 1.25; margin: 0 0 20px; font-weight: 700; }
h2 { font-size: 32px; line-height: 1.35; margin: 0 0 10px; font-weight: 700; }
h3 { font-size: 19px; line-height: 1.5; margin: 0 0 8px; font-weight: 600; }
p { margin: 0 0 12px; }
.container { max-width: var(--k-container); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部深蓝条 ---------- */
.topbar { background: var(--k-navy); color: rgba(255,255,255,.85); font-size: 13px; line-height: 38px; }
.topbar .container { display: flex; justify-content: space-between; gap: 16px; }
.topbar a { color: rgba(255,255,255,.85); }
.topbar span + span { margin-left: 24px; }

/* ---------- 页头 ---------- */
.site-header { background: #fff; border-bottom: 1px solid var(--k-line); position: sticky; top: 0; z-index: 200; }
.site-header .container { display: flex; align-items: center; height: 104px; gap: 40px; }
.logo { font-size: 30px; font-weight: 800; letter-spacing: .5px; color: var(--k-navy); white-space: nowrap; }
.logo em { font-style: normal; color: var(--k-cyan); }
.main-nav { display: none; flex: 1; }
.main-nav ul { display: flex; gap: 34px; list-style: none; margin: 0; padding: 0; }
.main-nav a { color: var(--k-ink); font-size: 16px; font-weight: 600; padding: 40px 0; display: inline-block; white-space: nowrap; }
/* 对标 kingfordpcb.cn：底部高亮条展开动效 */
.main-nav .m-row > a { position: relative; }
.main-nav .m-row > a::before {
  content: ""; position: absolute; left: 50%; bottom: -1px; transform: translateX(-50%);
  width: 0; height: 3px; background: var(--k-blue); transition: width .3s ease;
}
.main-nav .m-row > a:hover::before,
.main-nav .m-row > a[aria-current]::before { width: 100%; }
.main-nav a:hover, .main-nav a[aria-current] { color: var(--k-blue); }
.main-nav .has-sub .m-row > a::after { content: "▾"; font-size: 11px; margin-left: 6px; color: var(--k-muted); }
.btn-quote {
  background: var(--k-blue); color: #fff !important; font-size: 16px; font-weight: 600;
  padding: 12px 28px; border-radius: var(--k-radius); white-space: nowrap;
  transition: background .15s;
}
.btn-quote:hover { background: var(--k-blue-hover); }
.nav-toggle { margin-left: auto; width: 44px; height: 44px; border: 1px solid var(--k-line); background: #fff; border-radius: 4px; font-size: 20px; cursor: pointer; color: var(--k-navy); }
@media (min-width: 1180px) {
  .main-nav { display: block; }
  .nav-toggle { display: none; }
}
@media (max-width: 1179px) {
  .site-header .container { height: 64px; }
  .site-header .btn-quote { display: none; }
}

/* ---------- 全幅 Hero ---------- */
.hero {
  position: relative; min-height: 560px; display: flex; align-items: center;
  background: var(--k-navy-2) center/cover no-repeat;
  color: #fff; overflow: hidden;
}
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(9,33,64,.88) 0%, rgba(9,33,64,.55) 45%, rgba(9,33,64,.15) 100%); }
.hero .container { position: relative; z-index: 1; width: 100%; }
.hero h1 { color: #fff; font-size: 52px; letter-spacing: 2px; text-shadow: 0 2px 12px rgba(0,0,0,.3); }
.hero p { font-size: 19px; color: rgba(255,255,255,.92); max-width: 640px; }
.hero .btn-quote { display: inline-block; margin-top: 28px; padding: 16px 44px; font-size: 18px; }
.hero__tags { margin-top: 20px; font-size: 14px; color: rgba(255,255,255,.75); letter-spacing: 1px; }
.hero__tags span { margin-right: 18px; }

/* ---------- 右侧悬浮联系栏 ---------- */
.side-contact {
  position: fixed; right: 0; top: 50%; transform: translateY(-50%); z-index: 150;
  background: #fff; border: 1px solid var(--k-line); border-right: 0; border-radius: 6px 0 0 6px;
  box-shadow: -2px 2px 12px rgba(13,43,82,.08);
}
.side-contact a {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  width: 76px; padding: 14px 0; font-size: 13px; color: var(--k-ink);
  border-bottom: 1px solid var(--k-line);
}
.side-contact a:last-child { border-bottom: 0; }
.side-contact a:hover { color: var(--k-blue); background: var(--k-surface); }
.side-contact .ico { font-size: 20px; color: var(--k-blue); }
@media (max-width: 900px) { .side-contact { display: none; } }

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }
.section--gray { background: var(--k-surface); }
.section--navy { background: var(--k-navy); color: #fff; }
.sec-head { text-align: center; margin-bottom: 48px; }
.sec-head h2 { position: relative; display: inline-block; padding-bottom: 14px; }
.sec-head h2::after { content: ""; position: absolute; left: 50%; bottom: 0; width: 48px; height: 3px; background: var(--k-blue); transform: translateX(-50%); }
.sec-head p { color: var(--k-muted); margin: 10px 0 0; }
.section--navy .sec-head p { color: rgba(255,255,255,.7); }

/* ---------- 服务图文卡（图片+标题+箭头） ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.svc-card { background: #fff; border: 1px solid var(--k-line); border-radius: var(--k-radius); overflow: hidden; transition: box-shadow .2s; }
.svc-card:hover { box-shadow: 0 8px 28px rgba(13,43,82,.12); }
.svc-card__img { aspect-ratio: 16/9; overflow: hidden; }
.svc-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.svc-card:hover .svc-card__img img { transform: scale(1.05); }
.svc-card__body { display: flex; align-items: center; justify-content: space-between; padding: 20px 22px; }
.svc-card__body h3 { margin: 0; font-size: 18px; }
.svc-card__body p { margin: 4px 0 0; font-size: 13px; color: var(--k-muted); }
.svc-card__arrow {
  flex: none; width: 42px; height: 42px; border-radius: 50%;
  background: var(--k-blue); color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 18px; transition: background .15s;
}
.svc-card:hover .svc-card__arrow { background: var(--k-navy); }
.svc-card a { color: inherit; }

/* ---------- 关于我们（左图右文+对勾+数字） ---------- */
.about { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.about__img { border-radius: var(--k-radius); overflow: hidden; box-shadow: 0 18px 44px rgba(8,31,61,.18); }
.about__img img { width: 100%; display: block; aspect-ratio: 16/11; object-fit: cover; }
.about__text h2 { text-align: left; }
.about__text .lead { font-size: 16px; }
.about__text strong, .about__text .hl { color: var(--k-red); font-weight: 600; }
.check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 32px; margin: 24px 0 28px; padding: 0; list-style: none; }
.check-grid li { position: relative; padding-left: 26px; font-size: 15px; }
.check-grid li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  width: 18px; height: 18px; line-height: 18px; text-align: center;
  background: var(--k-cyan); color: #fff; border-radius: 50%; font-size: 12px;
}
.btn-more { display: inline-block; background: var(--k-blue); color: #fff !important; padding: 12px 34px; border-radius: var(--k-radius); font-size: 15px; font-weight: 600; }
.btn-more:hover { background: var(--k-blue-hover); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 64px; text-align: center; }
.stats .num { font-size: 46px; font-weight: 800; color: var(--k-blue); line-height: 1.1; font-variant-numeric: tabular-nums; }
.stats .lbl { font-size: 15px; color: var(--k-muted); margin-top: 6px; }

/* ---------- 能力/设备 Tab 风卡 ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cap-card { background: #fff; border-radius: var(--k-radius); overflow: hidden; border: 1px solid var(--k-line); }
.cap-card__img { aspect-ratio: 4/3; overflow: hidden; }
.cap-card__img img { width: 100%; height: 100%; object-fit: cover; }
.cap-card__body { padding: 16px 18px; }
.cap-card__body h3 { font-size: 16px; margin: 0 0 6px; }
.cap-card__body p { font-size: 13px; color: var(--k-muted); margin: 0; }

/* ---------- 行业应用（深底图文条） ---------- */
.ind-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.ind-card { position: relative; border-radius: var(--k-radius); overflow: hidden; aspect-ratio: 3/4; }
.ind-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ind-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(9,33,64,0) 30%, rgba(9,33,64,.92) 100%); }
.ind-card__t { position: absolute; left: 0; right: 0; bottom: 0; z-index: 1; padding: 20px; color: #fff; }
.ind-card__t h3 { color: #fff; margin: 0 0 4px; font-size: 18px; }
.ind-card__t p { margin: 0; font-size: 13px; color: rgba(255,255,255,.8); }

/* ---------- 数据表 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--k-line); border-radius: var(--k-radius); background: #fff; }
table.data { border-collapse: collapse; width: 100%; min-width: 720px; font-size: 14px; }
table.data caption { text-align: left; padding: 14px 18px; font-weight: 600; font-size: 16px; border-bottom: 1px solid var(--k-line); }
table.data th, table.data td { padding: 12px 18px; border-bottom: 1px solid var(--k-line); text-align: left; font-variant-numeric: tabular-nums; }
table.data thead th { background: var(--k-navy); color: #fff; font-weight: 600; white-space: nowrap; }
table.data tbody tr:nth-child(even) { background: var(--k-surface); }

/* ---------- 工艺流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; counter-reset: step; }
.flow__step { text-align: center; position: relative; padding-top: 8px; }
.flow__step::before {
  counter-increment: step; content: counter(step);
  display: flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; margin: 0 auto 12px;
  border-radius: 50%; background: var(--k-blue); color: #fff;
  font-size: 20px; font-weight: 700;
}
.flow__step h3 { font-size: 15px; margin: 0 0 4px; }
.flow__step p { font-size: 12px; color: var(--k-muted); margin: 0; }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 40px; }
.news-feat { border: 1px solid var(--k-line); border-radius: var(--k-radius); overflow: hidden; }
.news-feat__img { aspect-ratio: 16/9; overflow: hidden; }
.news-feat__img img { width: 100%; height: 100%; object-fit: cover; }
.news-feat__body { padding: 20px 22px; }
.news-list { display: grid; gap: 0; }
.news-list__item { display: flex; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--k-line); align-items: baseline; }
.news-list__date { flex: none; text-align: center; color: var(--k-muted); font-size: 13px; }
.news-list__date b { display: block; font-size: 24px; color: var(--k-navy); }

/* ---------- CTA 深蓝条 ---------- */
.cta-band { background: linear-gradient(120deg, var(--k-navy) 0%, var(--k-navy-2) 100%); color: #fff; padding: 56px 0; text-align: center; }
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,.8); max-width: 640px; margin: 0 auto 28px; }

/* ---------- 表单 ---------- */
.quote-layout { display: grid; grid-template-columns: 7fr 5fr; gap: 48px; align-items: start; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 14px; }
.field .req { color: var(--k-red); }
.field input[type="text"], .field input[type="tel"], .field input[type="email"], .field input[type="file"], .field select, .field textarea {
  width: 100%; height: 46px; padding: 10px 14px; font-size: 15px; font-family: inherit;
  border: 1px solid #c8d0d9; border-radius: var(--k-radius); background: #fff;
}
.field textarea { height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--k-blue); outline: none; }
.field__hint { font-size: 12px; color: var(--k-muted); margin-top: 4px; }
.checkbox { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; color: var(--k-muted); }
.checkbox input { width: 16px; height: 16px; margin-top: 3px; }
.btn-submit { width: 100%; height: 52px; background: var(--k-blue); color: #fff; border: 0; border-radius: var(--k-radius); font-size: 17px; font-weight: 700; cursor: pointer; }
.btn-submit:hover { background: var(--k-blue-hover); }
.aside-box { background: var(--k-surface); border-radius: var(--k-radius); padding: 24px 26px; margin-bottom: 20px; }
.aside-box h3 { margin: 0 0 12px; }
.aside-box ul { margin: 0; padding-left: 18px; font-size: 14px; color: var(--k-muted); }
.aside-box li { margin-bottom: 6px; }

/* ---------- 面包屑 ---------- */
.crumbs { background: var(--k-surface); font-size: 13px; color: var(--k-muted); padding: 12px 0; }

/* ---------- 内页小 banner ---------- */
.page-banner { position: relative; height: 280px; background: var(--k-navy-2) center/cover no-repeat; display: flex; align-items: center; overflow: hidden; }
.page-banner::before { content: ""; position: absolute; inset: 0; background: rgba(9,33,64,.72); }
.page-banner .container { position: relative; z-index: 1; }
.page-banner h1 { color: #fff; font-size: 40px; margin: 0; }
.page-banner p { color: rgba(255,255,255,.85); margin: 10px 0 0; }

/* ---------- 页脚 ---------- */
.site-footer { background: #0a2240; color: rgba(255,255,255,.72); padding: 64px 0 0; font-size: 14px; }
.site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 10px; }
.site-footer a { color: rgba(255,255,255,.72); }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 3fr 2fr 2fr 3fr; gap: 40px; padding-bottom: 48px; }
.footer-bar { border-top: 1px solid rgba(255,255,255,.12); padding: 20px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,.45); }

/* ---------- 移动端咨询条 ---------- */
.m-dock { display: none; }
@media (max-width: 900px) {
  .m-dock {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 180;
    height: 54px; background: #fff; border-top: 1px solid var(--k-line);
  }
  .m-dock a { flex: 1; display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 600; color: var(--k-blue); }
  .m-dock a.primary { background: var(--k-blue); color: #fff; }
  body { padding-bottom: 54px; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1023px) {
  .svc-grid, .cap-grid, .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .about { grid-template-columns: 1fr; gap: 32px; }
  .news-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .quote-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero { min-height: 440px; }
  .hero h1 { font-size: 36px; }
}
@media (max-width: 640px) {
  .section { padding: 48px 0; }
  .svc-grid, .cap-grid, .ind-grid, .check-grid { grid-template-columns: 1fr; }
  .hero { min-height: 380px; }
  .hero h1 { font-size: 28px; letter-spacing: 1px; }
  .hero p { font-size: 16px; }
  h2 { font-size: 24px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stats .num { font-size: 34px; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .page-banner { height: 200px; }
  .page-banner h1 { font-size: 28px; }
  .topbar { display: none; }
}

/* ---------- 大菜单（mega menu） ---------- */
.main-nav .m-row { display: contents; }
.main-nav .mega-panel__inner { height: auto; } /* 覆盖 .site-header .container 的 height:104px（面板内层复用了 .container） */
.mega-panel { display: none; }
.sub-toggle { display: none; }

/* 桌面 ≥1180px：hover / focus-within / .sub-open 展开全宽面板 */
@media (min-width: 1180px) {
  .main-nav .has-sub:hover .mega-panel,
  .main-nav .has-sub:focus-within .mega-panel,
  .main-nav .has-sub.sub-open .mega-panel {
    display: block;
    position: absolute; left: 0; right: 0; top: 100%;
    background: #fff;
    border-top: 1px solid var(--k-line);
    border-bottom: 1px solid var(--k-line);
    box-shadow: 0 18px 36px rgba(13,43,82,.12);
    z-index: 210;
  }
  .main-nav .mega-panel__inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px 32px; padding-top: 24px; padding-bottom: 24px; }
  .main-nav .mega-panel__inner.mega-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .mega-panel a { display: block; padding: 9px 0; font-size: 14px; color: var(--k-ink); border-bottom: 1px solid #eef2f6; white-space: nowrap; }
  .mega-panel a:hover, .mega-panel a[aria-current] { color: var(--k-blue); }
}

/* 移动端 <1180px：汉堡展开全屏面板，顶级项手风琴 */
@media (max-width: 1179px) {
  .main-nav.nav-open {
    display: block;
    position: fixed; top: 64px; left: 0; right: 0; bottom: 54px; /* 避开 .m-dock */
    background: #fff; overflow-y: auto; z-index: 300;
    border-top: 1px solid var(--k-line);
    box-shadow: 0 18px 36px rgba(13,43,82,.12);
  }
  .main-nav.nav-open ul { display: block; padding: 4px 0 24px; }
  .main-nav.nav-open li { border-bottom: 1px solid var(--k-line); }
  .main-nav.nav-open .m-row { display: flex; align-items: stretch; }
  .main-nav.nav-open .m-row > a { flex: 1; display: block; padding: 14px 24px; font-size: 16px; }
  .main-nav.nav-open .m-row > a::after { display: none; }
  .main-nav.nav-open .sub-toggle {
    display: block; flex: none; width: 52px; border: 0; border-left: 1px solid var(--k-line);
    background: transparent; font-size: 13px; color: var(--k-muted); cursor: pointer;
  }
  .main-nav.nav-open .has-sub.sub-open .m-row > a { color: var(--k-blue); }
  .main-nav.nav-open .mega-panel { background: var(--k-surface); }
  .main-nav.nav-open .has-sub.sub-open .mega-panel { display: block; }
  .main-nav.nav-open .mega-panel__inner { display: block; padding: 4px 0 10px; }
  .main-nav.nav-open .mega-panel a { display: block; padding: 10px 36px; font-size: 14px; color: var(--k-muted); }
  .main-nav.nav-open .mega-panel a[aria-current] { color: var(--k-blue); font-weight: 600; }
  body.nav-locked { overflow: hidden; }
}

/* ---------- 正文内容工具类（用于单页 content 字段的结构化 HTML） ---------- */
.c-sec { margin-bottom: 40px; }
.c-sec > h2 { font-size: 26px; margin-bottom: 12px; }
.c-sec > h3 { font-size: 18px; margin: 20px 0 8px; }
.c-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.c-grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.c-media { border-radius: var(--k-radius); overflow: hidden; margin: 16px 0; }
.c-media img { width: 100%; display: block; }
.c-note { background: var(--k-surface); border-left: 3px solid var(--k-blue); padding: 14px 18px; font-size: 14px; color: var(--k-muted); margin: 16px 0; }
.c-cta { background: linear-gradient(120deg, var(--k-navy) 0%, var(--k-navy-2) 100%); color: #fff; border-radius: var(--k-radius); padding: 32px; text-align: center; margin-top: 40px; }
.c-cta h2, .c-cta h3 { color: #fff; }
.c-cta p { color: rgba(255,255,255,.8); }
.c-faq { border-top: 1px solid var(--k-line); }
.c-faq__item { border-bottom: 1px solid var(--k-line); padding: 16px 0; }
.c-faq__q { font-weight: 600; font-size: 16px; margin: 0 0 8px; color: var(--k-ink); }
.c-faq__a { color: var(--k-muted); margin: 0; font-size: 14px; }
.c-list-check { list-style: none; padding: 0; margin: 12px 0; }
.c-list-check li { position: relative; padding-left: 26px; margin-bottom: 8px; }
.c-list-check li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 18px; height: 18px; line-height: 18px; text-align: center; background: var(--k-cyan); color: #fff; border-radius: 50%; font-size: 12px; }

/* 幽灵按钮（次按钮，原 lists_single_v3.htm 内联样式） */
.btn-ghost { display: inline-block; padding: 12px 34px; border-radius: var(--k-radius); font-size: 15px; font-weight: 600; border: 1px solid var(--k-blue); color: var(--k-blue) !important; background: #fff; margin-left: 12px; }
.btn-ghost:hover { background: var(--k-surface); }

/* 关联服务链接组（原 lists_single_v3.htm 内联样式） */
.related-links { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 12px; }
.related-links a { display: inline-block; padding: 10px 22px; border: 1px solid var(--k-line); border-radius: var(--k-radius); background: #fff; color: var(--k-ink); font-size: 14px; }
.related-links a:hover { border-color: var(--k-blue); color: var(--k-blue); }

.table-wrap[tabindex] { outline-offset: 2px; }

@media (max-width: 767px) { .c-grid2, .c-grid3 { grid-template-columns: 1fr; } }