/* ============================================================
   软件测试服务 · 产品详情页
   ============================================================ */

:root {
  --ink:        #12171C;
  --ink-2:      #2C3844;
  --body:       #4A5560;
  --muted:      #7A8794;
  --faint:      #9AA6B2;
  --line:       #E3E8ED;
  --line-soft:  #EDF1F5;
  --bg:         #FFFFFF;
  --bg-soft:    #F6F8FA;
  --bg-deep:    #101720;
  --accent:     #1E6FB8;
  --accent-dp:  #14507F;
  --accent-sf:  #EEF4FA;
  --ok:         #1F7A5A;
  --warn:       #9A5B0A;

  --maxw: 1200px;
  --r: 10px;

  --sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB",
          "Source Han Sans SC", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont,
          "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Cascadia Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- 通用文字 ---------- */
h1, h2, h3, h4 { color: var(--ink); margin: 0; font-weight: 700; line-height: 1.35; }
h2 { font-size: 30px; letter-spacing: -0.2px; }
h3 { font-size: 19px; }
h4 { font-size: 16px; }
p  { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; letter-spacing: 2px; color: var(--accent);
  font-weight: 600; text-transform: uppercase;
}
.eyebrow::before {
  content: ""; width: 20px; height: 2px; background: var(--accent); display: block;
}

.lead { font-size: 16.5px; color: var(--body); line-height: 1.85; }
.note { font-size: 13px; color: var(--muted); line-height: 1.7; }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; height: 64px; gap: 40px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); font-size: 16px; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 6px; background: var(--accent);
  display: grid; place-items: center;
}
.brand-mark svg { display: block; }
.nav-links { display: flex; gap: 30px; margin-left: auto; }
.nav-links a { font-size: 14px; color: var(--body); padding: 4px 0; border-bottom: 2px solid transparent; }
.nav-links a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.nav-tel { font-family: var(--mono); font-size: 14px; color: var(--ink); font-weight: 600; }

/* ---------- Hero（非居中，左文右图） ---------- */
.hero { padding: 76px 0 68px; border-bottom: 1px solid var(--line-soft); }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: 56px; align-items: center;
}
.hero h1 { font-size: 44px; letter-spacing: -0.8px; line-height: 1.22; margin: 18px 0 20px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-sub { font-size: 17px; color: var(--body); line-height: 1.85; max-width: 30em; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 46px; padding: 0 24px; border-radius: 8px;
  font-size: 14.5px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: transform .15s ease, background .15s ease;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dp); }
.btn-ghost { background: #fff; color: var(--ink-2); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn:active { transform: translateY(1px); }

.hero-fig { position: relative; }
.hero-fig img { border-radius: 12px; box-shadow: 0 18px 44px -22px rgba(18,32,48,.28); }
.hero-tag {
  position: absolute; left: -18px; bottom: -18px;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 18px; box-shadow: 0 10px 26px -14px rgba(18,32,48,.24);
}
.hero-tag b { display: block; font-family: var(--mono); font-size: 20px; color: var(--ink); line-height: 1.2; }
.hero-tag span { font-size: 12px; color: var(--muted); }

/* ---------- 数据条 ---------- */
.statband { border-bottom: 1px solid var(--line-soft); background: var(--bg-soft); }
.statband-in { display: grid; grid-template-columns: repeat(4, 1fr); }
.statband-in > div { padding: 30px 28px; border-left: 1px solid var(--line); }
.statband-in > div:first-child { border-left: 0; padding-left: 0; }
.statband b { display: block; font-family: var(--mono); font-size: 30px; color: var(--ink); line-height: 1.15; letter-spacing: -0.5px; }
.statband span { font-size: 13px; color: var(--muted); }

/* ---------- 区块 ---------- */
section { padding: 84px 0; }
section.alt { background: var(--bg-soft); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.sec-head { max-width: 760px; margin-bottom: 48px; }
.sec-head h2 { margin: 14px 0 16px; }
.sec-head p { font-size: 16px; }

/* ---------- 定义 / 痛点 ---------- */
.def-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.def-box { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 32px 34px; }
.def-box h3 { margin-bottom: 14px; }
.def-box + .def-box { margin-top: 20px; }

.pains { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); }
.pain {
  padding: 24px 26px 24px 0; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 34px 1fr; gap: 14px;
}
.pain:nth-child(odd) { padding-right: 40px; }
.pain:nth-child(even) { padding-left: 34px; border-left: 1px solid var(--line); }
.pain:nth-child(1), .pain:nth-child(2) { border-top: 0; }
.pain-i {
  width: 28px; height: 28px; border-radius: 7px; background: var(--accent-sf);
  display: grid; place-items: center; color: var(--accent);
  font-family: var(--mono); font-size: 12px; font-weight: 700; margin-top: 2px;
}
.pain h4 { margin-bottom: 6px; font-size: 15.5px; }
.pain p { font-size: 13.5px; color: var(--muted); margin: 0; line-height: 1.7; }

/* ---------- 能力（Bento 非对称） ---------- */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.cell {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 28px 30px; transition: border-color .18s ease, box-shadow .18s ease;
}
.cell:hover { border-color: #C9D6E2; box-shadow: 0 14px 34px -22px rgba(18,32,48,.30); }
.cell .ci {
  width: 36px; height: 36px; border-radius: 8px; background: var(--accent-sf);
  display: grid; place-items: center; margin-bottom: 16px; color: var(--accent);
}
.cell h4 { margin-bottom: 10px; font-size: 17px; }
.cell p { font-size: 13.8px; color: var(--muted); margin: 0 0 14px; }
.cell ul { margin: 0; padding: 0; list-style: none; }
.cell li {
  font-size: 13px; color: var(--body); padding: 7px 0 7px 16px; position: relative;
  border-top: 1px solid var(--line-soft);
}
.cell li::before {
  content: ""; position: absolute; left: 0; top: 16px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
}
.c3 { grid-column: span 3; }
.c2 { grid-column: span 2; }
.c4 { grid-column: span 4; }
.c6 { grid-column: span 6; }

/* ---------- 质量特性表 ---------- */
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th, .tbl td { text-align: left; padding: 15px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th { font-size: 12.5px; letter-spacing: .5px; color: var(--muted); font-weight: 600; background: var(--bg-soft); }
.tbl td:first-child { color: var(--ink); font-weight: 600; width: 172px; }
.tbl-wrap { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }

/* ---------- 图文混排 ---------- */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.split.rev .split-media { order: -1; }
.split-media img { border-radius: 12px; border: 1px solid var(--line); background: #fff; }
.figcap { margin-top: 12px; font-size: 12.5px; color: var(--faint); }

.checklist { list-style: none; margin: 22px 0 0; padding: 0; }
.checklist li {
  position: relative; padding: 0 0 0 26px; margin-bottom: 12px;
  font-size: 14.2px; color: var(--body); line-height: 1.7;
}
.checklist li::before {
  content: ""; position: absolute; left: 3px; top: 9px;
  width: 10px; height: 6px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}

/* ---------- 案例 ---------- */
.case { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: #fff; }
.case-head {
  padding: 30px 36px; border-bottom: 1px solid var(--line-soft);
  display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 24px; align-items: center;
}
.case-head h3 { font-size: 20px; margin-bottom: 6px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  font-size: 12px; padding: 4px 10px; border-radius: 20px;
  background: var(--accent-sf); color: var(--accent-dp); font-weight: 600;
}
.case-body { padding: 32px 36px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.kpi { padding: 0 24px; border-left: 1px solid var(--line-soft); }
.kpi:first-child { padding-left: 0; border-left: 0; }
.kpi b { display: block; font-family: var(--mono); font-size: 27px; color: var(--ink); line-height: 1.2; }
.kpi span { font-size: 12.5px; color: var(--muted); }
.kpi small { display: block; margin-top: 6px; font-size: 12px; color: var(--faint); }
.case-media { padding: 0 36px 36px; display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; }
.case-media img { border-radius: 10px; border: 1px solid var(--line); }

/* ---------- 交付物 ---------- */
.deliv { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.deliv-item { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 26px 28px; }
.deliv-item .mono { font-size: 12px; color: var(--accent); font-weight: 700; letter-spacing: 1px; }
.deliv-item h4 { margin: 10px 0 8px; }
.deliv-item p { font-size: 13.5px; color: var(--muted); margin: 0; }

/* ---------- CTA ---------- */
.cta { background: var(--bg-deep); color: #B9C4D0; }
.cta-in { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(0,.9fr); gap: 56px; align-items: center; }
.cta h2 { color: #fff; font-size: 30px; margin-bottom: 16px; }
.cta p { font-size: 15px; color: #93A1B0; max-width: 34em; }
.contact-card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-radius: 12px; padding: 28px 30px; }
.contact-row { display: flex; gap: 16px; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.09); }
.contact-row:last-child { border-bottom: 0; }
.contact-row .k { width: 74px; flex: none; font-size: 13px; color: #7E8C9C; }
.contact-row .v { font-size: 14px; color: #E4EAF1; }
.contact-row .v.mono { font-family: var(--mono); }

/* ---------- 页脚 ---------- */
footer { background: #0C1218; color: #6E7C8B; font-size: 13px; padding: 30px 0; }
.foot-in { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; }
.foot-in .mono { font-family: var(--mono); }
.foot-links { margin-left: auto; display: flex; gap: 22px; }
.foot-links a:hover { color: #B9C4D0; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-grid, .def-grid, .split, .cta-in { grid-template-columns: minmax(0,1fr); gap: 40px; }
  .split.rev .split-media { order: 0; }
  .hero h1 { font-size: 36px; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .c2, .c3, .c4, .c6 { grid-column: span 1; }
  .c6 { grid-column: span 2; }
  .statband-in { grid-template-columns: repeat(2, 1fr); }
  .statband-in > div { padding: 22px 24px; }
  .statband-in > div:nth-child(3) { border-left: 0; padding-left: 0; }
  .statband-in > div:nth-child(3), .statband-in > div:nth-child(4) { border-top: 1px solid var(--line); }
  .case-body { grid-template-columns: repeat(2, 1fr); row-gap: 26px; }
  .kpi:nth-child(3) { padding-left: 0; border-left: 0; }
  .deliv { grid-template-columns: repeat(1, 1fr); }
}

@media (max-width: 720px) {
  .wrap { padding: 0 20px; }
  .nav-links { display: none; }
  section { padding: 58px 0; }
  h2 { font-size: 24px; }
  .hero { padding: 50px 0; }
  .hero h1 { font-size: 29px; }
  .pains { grid-template-columns: 1fr; }
  .pain { padding: 20px 0; border-left: 0 !important; border-top: 1px solid var(--line) !important; }
  .pain:first-child { border-top: 0 !important; }
  .bento { grid-template-columns: 1fr; }
  .c6 { grid-column: span 1; }
  .case-body { grid-template-columns: 1fr; }
  .kpi { padding: 0; border-left: 0; }
  .case-media { grid-template-columns: 1fr; padding: 0 20px 24px; }
  .case-head, .case-body { padding-left: 20px; padding-right: 20px; }
  .case-body { padding-bottom: 26px; }
  .tbl-wrap { overflow-x: auto; }
  .tbl { min-width: 620px; }
  .statband-in { grid-template-columns: 1fr; }
  .statband-in > div { border-left: 0; padding: 18px 0; border-top: 1px solid var(--line); }
  .statband-in > div:first-child { border-top: 0; }
  .foot-in { flex-direction: column; align-items: flex-start; }
  .foot-links { margin-left: 0; }
}