/* 码全科技官网 · 公共站点样式
   品牌蓝 #0527AF / 白底 / 近黑文本 / 锐角按钮 / 大留白节奏 */
:root {
  --blue: #0527AF;
  --blue-deep: #041E86;
  --blue-tint: #EEF2FF;
  --ink: #0B0D12;
  --ink-2: #3D4451;
  --ink-3: #6B7280;
  --line: #E5E7EB;
  --bg: #FFFFFF;
  --bg-soft: #F7F8FA;
  --max: 1200px;
  --font: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 88px 0; }
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .18em;
  color: var(--blue); text-transform: uppercase; margin-bottom: 16px;
}
.sec-title { font-size: 34px; margin-bottom: 18px; }
.sec-lead { font-size: 18px; color: var(--ink-2); max-width: 820px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.96); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 34px; width: auto; }
.brand:hover { text-decoration: none; }
.main-nav { display: flex; gap: 6px; align-items: center; }
.main-nav a {
  color: var(--ink); font-size: 15px; font-weight: 500;
  padding: 10px 14px; border-radius: 4px; min-height: 44px; display: inline-flex; align-items: center;
}
.main-nav a:hover { color: var(--blue); background: var(--blue-tint); text-decoration: none; }
.main-nav a.active { color: var(--blue); }
.nav-cta {
  background: var(--blue); color: #fff !important; padding: 10px 20px !important;
}
.nav-cta:hover { background: var(--blue-deep) !important; }
.nav-toggle {
  display: none; width: 44px; height: 44px; border: 0; background: none; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); transition: .25s; }
@media (max-width: 960px) {
  .nav-toggle { display: flex; }
  .main-nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; padding: 12px 16px 20px; gap: 2px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 14px; }
}

/* ===== Hero ===== */
.hero { padding: 0; display: grid; grid-template-columns: 1fr 1fr; min-height: 560px; }
.hero-left {
  background: var(--blue); color: #fff;
  padding: 96px 56px 96px calc((100vw - var(--max)) / 2 + 24px);
  display: flex; flex-direction: column; justify-content: center;
}
.hero-left .eyebrow { color: #B9C6FF; }
.hero-title { font-size: 46px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 24px; }
.hero-sub { font-size: 17px; line-height: 1.9; color: #DCE3FF; margin-bottom: 40px; max-width: 560px; }
.hero-right {
  background: var(--bg-soft);
  display: flex; align-items: center; justify-content: center; padding: 48px;
}
.hero-right svg { max-width: 520px; width: 100%; height: auto; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 32px; font-size: 16px; font-weight: 600; border-radius: 0;
  min-height: 48px; cursor: pointer; border: 1px solid transparent; transition: background .2s, color .2s;
}
.btn:hover { text-decoration: none; }
.btn-light { background: #fff; color: var(--blue); }
.btn-light:hover { background: #E5ECFF; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-deep); }
.btn-outline { background: transparent; color: var(--blue); border-color: var(--blue); }
.btn-outline:hover { background: var(--blue-tint); }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .hero-left { padding: 72px 24px; }
  .hero-title { font-size: 32px; }
  .hero-right { padding: 40px 24px 56px; }
}

/* ===== Stats band ===== */
.stats { padding: 64px 0; border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 32px 24px; }
.stat .num { font-size: 44px; font-weight: 800; color: var(--blue); letter-spacing: -0.02em; line-height: 1.1; }
.stat .num small { font-size: 20px; font-weight: 700; }
.stat .lbl { font-size: 14px; color: var(--ink-3); margin-top: 6px; }
@media (max-width: 960px) { .stats-grid { grid-template-columns: repeat(3, 1fr); } .stat .num { font-size: 34px; } }
@media (max-width: 560px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }

/* ===== Sector list（四大业务） ===== */
.sectors { padding: 96px 0; }
.sector-row {
  display: grid; grid-template-columns: 64px 1fr 2fr auto; gap: 32px; align-items: start;
  padding: 40px 0; border-top: 1px solid var(--line);
}
.sector-row:last-child { border-bottom: 1px solid var(--line); }
.sector-idx { font-size: 15px; font-weight: 700; color: var(--blue); letter-spacing: .1em; padding-top: 6px; }
.sector-name { font-size: 24px; font-weight: 700; }
.sector-tags { margin-top: 12px; display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  font-size: 12.5px; color: var(--ink-2); border: 1px solid var(--line);
  padding: 4px 12px; border-radius: 999px; letter-spacing: .04em; white-space: nowrap;
}
.sector-desc { color: var(--ink-2); font-size: 16px; }
.arrow-link { font-weight: 600; white-space: nowrap; padding-top: 6px; display: inline-block; min-height: 44px; }
.arrow-link::after { content: "→"; margin-left: 8px; transition: margin .2s; }
.arrow-link:hover { text-decoration: none; }
.arrow-link:hover::after { margin-left: 14px; }
@media (max-width: 860px) {
  .sector-row { grid-template-columns: 1fr; gap: 12px; padding: 32px 0; }
  .sector-idx { padding: 0; }
}

/* ===== Split feature（交替两栏） ===== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split.rev > .split-media { order: 2; }
.split-media { background: var(--blue-tint); min-height: 320px; display: flex; align-items: center; justify-content: center; padding: 40px; }
.split-media svg { width: 100%; max-width: 420px; height: auto; }
.split h3 { font-size: 26px; margin-bottom: 16px; }
.split p { color: var(--ink-2); }
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split.rev > .split-media { order: 0; }
}

/* ===== Tech layers ===== */
.tech { background: var(--ink); color: #fff; }
.tech .sec-title { color: #fff; }
.tech .sec-lead { color: #A6AEBF; }
.layer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(255,255,255,.16); margin-top: 48px; border: 1px solid rgba(255,255,255,.16); }
.layer { background: var(--ink); padding: 36px 28px; }
.layer .no { font-size: 13px; letter-spacing: .2em; color: #7D9BFF; font-weight: 700; margin-bottom: 14px; }
.layer h3 { color: #fff; font-size: 21px; margin-bottom: 12px; }
.layer p { color: #A6AEBF; font-size: 15px; }
.tech-foot { margin-top: 40px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.16); color: #C7CFDF; font-size: 15px; }
.tech-foot b { color: #fff; }
@media (max-width: 860px) { .layer-grid { grid-template-columns: 1fr; } }

/* ===== Cases ===== */
.case-list { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.case-card { border-top: 2px solid var(--ink); padding-top: 24px; }
.case-card h3 { font-size: 21px; margin-bottom: 10px; }
.case-card p { color: var(--ink-2); font-size: 15.5px; }
.case-meta { font-size: 13px; color: var(--ink-3); letter-spacing: .06em; margin-bottom: 10px; text-transform: uppercase; }
@media (max-width: 760px) { .case-list { grid-template-columns: 1fr; gap: 32px; } }

/* ===== Honors ===== */
.honors { background: var(--bg-soft); }
.honor-band { display: flex; flex-wrap: wrap; gap: 12px 0; margin: 32px 0 48px; }
.honor-band span { padding: 6px 18px; border-left: 1px solid var(--line); font-size: 15px; font-weight: 600; color: var(--ink); }
.honor-band span:first-child { border-left: 0; padding-left: 0; }
.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.honor-item figure { border: 1px solid var(--line); background: #fff; }
.honor-item img { width: 100%; height: 180px; object-fit: cover; object-position: top; }
.honor-item figcaption { padding: 14px 16px; font-size: 14px; color: var(--ink-2); }
.honor-item figcaption b { display: block; color: var(--ink); font-size: 15px; margin-bottom: 2px; }
@media (max-width: 860px) { .honor-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .honor-grid { grid-template-columns: 1fr; } }

/* ===== News / list ===== */
.news-list { border-top: 1px solid var(--line); }
.news-item { display: grid; grid-template-columns: 120px 1fr auto; gap: 24px; align-items: baseline; padding: 22px 0; border-bottom: 1px solid var(--line); }
.news-item .date { color: var(--ink-3); font-size: 14px; font-variant-numeric: tabular-nums; }
.news-item .t { font-size: 17px; font-weight: 600; color: var(--ink); }
.news-item:hover .t { color: var(--blue); }
@media (max-width: 640px) { .news-item { grid-template-columns: 1fr; gap: 4px; } }

/* ===== CTA band ===== */
.cta-band { background: var(--blue); color: #fff; text-align: center; padding: 96px 24px; }
.cta-band h2 { font-size: 34px; margin-bottom: 16px; }
.cta-band p { color: #C9D4FF; font-size: 17px; margin-bottom: 36px; }
.cta-contact { margin-top: 28px; color: #DCE3FF; font-size: 15px; }
.cta-contact b { color: #fff; }

/* ===== Footer ===== */
.site-footer { background: #0B0D12; color: #9AA3B2; padding: 64px 0 32px; font-size: 14.5px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr auto; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.12); }
.foot-brand img { height: 34px; margin-bottom: 18px; }
.foot-brand p { max-width: 340px; line-height: 1.9; }
.foot-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.foot-col a { display: block; color: #9AA3B2; padding: 5px 0; min-height: 32px; }
.foot-col a:hover { color: #fff; text-decoration: none; }
.foot-qr { display: flex; gap: 20px; }
.foot-qr figure { text-align: center; }
.foot-qr img { width: 96px; height: 96px; border-radius: 4px; background: #fff; padding: 4px; }
.foot-qr figcaption { margin-top: 8px; font-size: 13px; color: #7C8494; }
.foot-legal { padding-top: 24px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: #6B7280; font-size: 13.5px; }
.foot-legal a { color: #6B7280; }
@media (max-width: 860px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .foot-grid { grid-template-columns: 1fr; gap: 32px; } }

/* ===== 内页通用 ===== */
.page-hero { background: var(--bg-soft); padding: 72px 0 56px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: 40px; margin-bottom: 16px; }
.page-hero .lead { font-size: 18px; color: var(--ink-2); max-width: 840px; }
.crumbs { font-size: 13.5px; color: var(--ink-3); margin-bottom: 24px; }
.crumbs a { color: var(--ink-3); }
.crumbs a:hover { color: var(--blue); }
.prose { max-width: 860px; }
.prose h2 { font-size: 26px; margin: 48px 0 16px; }
.prose h3 { font-size: 20px; margin: 32px 0 12px; }
.prose p { margin: 14px 0; color: var(--ink-2); }
.prose ul, .prose ol { margin: 14px 0 14px 22px; color: var(--ink-2); }
.prose li { margin: 8px 0; }
.prose b, .prose strong { color: var(--ink); }
.def-block { border-left: 3px solid var(--blue); background: var(--blue-tint); padding: 24px 28px; font-size: 17.5px; font-weight: 500; margin: 24px 0; }
.kv { display: grid; grid-template-columns: 180px 1fr; gap: 8px 24px; margin: 20px 0; }
.kv dt { color: var(--ink-3); font-size: 14.5px; padding-top: 2px; }
.kv dd { color: var(--ink); }
@media (max-width: 640px) { .kv { grid-template-columns: 1fr; gap: 0 0; } .page-hero h1 { font-size: 30px; } }

/* ===== FAQ ===== */
.faq-group { margin-top: 40px; }
.faq-group > h2 { font-size: 22px; padding-bottom: 12px; border-bottom: 2px solid var(--ink); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 22px 44px 22px 0; position: relative;
  font-size: 17px; font-weight: 600; min-height: 44px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 4px; top: 20px; font-size: 22px; font-weight: 400;
  color: var(--blue); transition: transform .2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .a { padding: 0 0 24px; color: var(--ink-2); max-width: 860px; }

/* 时间线（关于我们） */
.timeline { border-left: 2px solid var(--line); margin: 24px 0 0 6px; padding-left: 28px; }
.timeline li { position: relative; margin: 26px 0; list-style: none; }
.timeline li::before {
  content: ""; position: absolute; left: -35px; top: 8px; width: 12px; height: 12px;
  background: var(--blue); border-radius: 50%;
}
.timeline .year { font-weight: 800; color: var(--blue); font-size: 19px; }

/* 页尾备案 */
.record { color: #6B7280; }