/* ==========================================================================
   盯盘侠官网 · 单页静态站样式
   零依赖：不引任何外部字体 / CDN；字体走系统栈；配色与产品内保持一致（主色 #1f3a5f）
   ========================================================================== */

:root {
  --navy: #1f3a5f;
  --navy-2: #2c5282;
  --navy-soft: rgba(31, 58, 95, .08);
  --ink: #1f2329;
  --ink-2: #4b5563;
  --muted: #6b7280;
  --bg: #f6f8fa;
  --surface: #ffffff;
  --border: #e5e7eb;
  --border-2: #d8dbdf;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(31, 58, 95, .10);
  --shadow-sm: 0 4px 16px rgba(31, 58, 95, .08);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Cascadia Code", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }   /* height:auto 必须: 只写 width 时 HTML 的 height 属性会把图固定死, 等比失效(2026-10-13 事故) */
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.3; margin: 0; letter-spacing: .2px; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
code { font-family: var(--mono); font-size: .95em; }
section[id] { scroll-margin-top: 76px; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 22px; }
.center { text-align: center; }

/* ---------------------------------- 按钮 ---------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 12px; border: 1px solid transparent;
  font-size: 15.5px; font-weight: 600; cursor: pointer; white-space: nowrap;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--navy); color: #fff; box-shadow: 0 6px 18px rgba(31, 58, 95, .22); }
.btn-primary:hover { background: #16304f; box-shadow: 0 8px 22px rgba(31, 58, 95, .28); }
.btn-ghost { background: #fff; color: var(--navy); border-color: var(--border-2); }
.btn-ghost:hover { border-color: var(--navy); background: #fbfcfe; }
.btn-sm { padding: 9px 16px; font-size: 14px; border-radius: 10px; }
.btn-block { width: 100%; }

/* --------------------------------- 顶栏 ---------------------------------- */
.site-head {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent; transition: border-color .2s ease, box-shadow .2s ease;
}
.site-head.scrolled { border-bottom-color: var(--border); box-shadow: 0 6px 24px rgba(31, 58, 95, .06); }
.head-in { display: flex; align-items: center; gap: 22px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand img { border-radius: 9px; }
.brand-name { font-size: 18px; letter-spacing: .5px; }
.brand-tag {
  font-size: 11.5px; font-weight: 600; color: var(--navy);
  background: var(--navy-soft); padding: 3px 8px; border-radius: 999px;
}
.nav { display: flex; gap: 6px; margin-left: 12px; }
.nav a { padding: 8px 14px; border-radius: 9px; font-size: 15px; color: var(--ink-2); }
.nav a:hover { color: var(--navy); background: var(--navy-soft); }
.head-cta { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--ink-2); margin: 4px 0; border-radius: 2px; }

/* --------------------------------- 首屏 ---------------------------------- */
.hero {
  background:
    radial-gradient(900px 420px at 88% -10%, rgba(31, 58, 95, .10), transparent 60%),
    radial-gradient(700px 380px at -6% 18%, rgba(44, 82, 130, .08), transparent 55%),
    linear-gradient(180deg, #eef2f7 0%, #f7f8fa 100%);
  padding: 66px 0 74px;
}
.hero-center { text-align: center; }
.hero-center .eyebrow { margin: 0 auto 18px; }
.hero-center .lead { margin: 18px auto 0; max-width: 840px; }
.hero-cta { justify-content: center; }
.hero-points { justify-content: center; }
.hero-center .fineprint { max-width: 780px; margin-left: auto; margin-right: auto; }
.hero-shot { margin-top: 42px; }
.hero-shot .shot-frame { max-width: 1040px; margin: 0 auto; }
.eyebrow {
  display: inline-block; font-size: 13.5px; font-weight: 600; color: var(--navy);
  background: #fff; border: 1px solid rgba(31, 58, 95, .16);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
}
.hero h1 { font-size: 46px; font-weight: 800; letter-spacing: .5px; }
.hero h1 .hl { color: var(--navy); }
.lead { margin-top: 18px; font-size: 17px; color: var(--ink-2); }
.hero-cta { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.hero-points { display: flex; gap: 22px; margin-top: 24px; flex-wrap: wrap; }
.hero-points li { position: relative; padding-left: 22px; font-size: 14.5px; color: var(--ink-2); }
.hero-points li::before {
  content: ""; position: absolute; left: 0; top: 9px; width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--navy-soft);
  box-shadow: inset 0 0 0 4px #fff, inset 0 0 0 14px var(--navy-soft);
}
.hero-points li::after {
  content: ""; position: absolute; left: 4.5px; top: 13px; width: 5px; height: 3px;
  border-left: 2px solid var(--navy); border-bottom: 2px solid var(--navy);
  transform: rotate(-45deg);
}
.fineprint { margin-top: 18px; font-size: 12.5px; color: var(--muted); }

.shot-frame {
  background: #fff; border: 1px solid var(--border); border-radius: 16px;
  box-shadow: var(--shadow); overflow: hidden;
}
.shot-bar {
  display: flex; align-items: center; gap: 6px; height: 38px; padding: 0 14px;
  background: #f3f5f8; border-bottom: 1px solid var(--border);
}
.shot-bar i { width: 10px; height: 10px; border-radius: 50%; background: #d8dde5; }
.shot-bar i:first-child { background: #ecb7b0; }
.shot-bar i:nth-child(2) { background: #ecd9a8; }
.shot-bar i:nth-child(3) { background: #b3d8b6; }
.shot-bar span { margin-left: 8px; font-size: 12.5px; color: var(--muted); }
.shot-frame img { width: 100%; }

/* --------------------------------- 区块 ---------------------------------- */
.section { padding: 78px 0; }
.section.alt { background: var(--surface); }
.sec-title { font-size: 32px; font-weight: 800; text-align: center; }
.sec-sub { text-align: center; color: var(--muted); margin-top: 12px; font-size: 16px; }

/* -------------------------------- 功能行 --------------------------------- */
.frow { display: grid; grid-template-columns: 1.15fr 1fr; gap: 52px; align-items: center; margin-top: 62px; }
.frow.rev { grid-template-columns: 1fr 1.15fr; }
.frow.rev .fmedia { order: 2; }
.fmedia img {
  width: 100%; border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); background: #fff;
}
.fmedia img.tall { max-height: 640px; object-fit: cover; object-position: 50% 0; }
.fmedia img.zoomable { cursor: zoom-in; }
.fcopy h3 { font-size: 24px; font-weight: 700; margin-top: 10px; }
.fcopy p { margin-top: 14px; color: var(--ink-2); font-size: 15.5px; }
.ficon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--navy); color: #fff; font-weight: 700; font-size: 16px;
}
.fpoints { margin-top: 16px; display: grid; gap: 9px; }
.fpoints li { position: relative; padding-left: 24px; font-size: 14.5px; color: var(--ink-2); }
.fpoints li::before {
  content: "✓"; position: absolute; left: 2px; top: 0;
  color: var(--navy); font-weight: 700; font-size: 13px;
}

/* ------------------------------ 功能卡片网格 ----------------------------- */
.fgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 62px; }
.fcard {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm); display: flex; flex-direction: column;
}
.fcard-b { padding: 24px 26px 28px; }
.fcard-b h3 { font-size: 20px; margin-top: 10px; }
.fcard-b p { margin-top: 10px; color: var(--ink-2); font-size: 15px; }
/* 卡片图统一框高 + contain: 两张卡图高一致(不参差), 图完整不裁不拉(2026-10-13 用户反馈) */
.fcard > img {
  width: 100%; height: 360px; object-fit: contain; background: #fff;
  padding: 14px 0; border-bottom: 1px solid var(--border); cursor: zoom-in;
}

/* --------------------------------- 下载 ---------------------------------- */
.dl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
.dl-card {
  display: flex; align-items: center; gap: 18px; padding: 22px 24px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); cursor: pointer; transition: border-color .15s ease, transform .15s ease;
}
.dl-card:hover { border-color: var(--navy); transform: translateY(-2px); }
.dl-card[data-ready="1"] { border-color: rgba(31, 58, 95, .35); }
.dl-ico {
  width: 62px; height: 62px; flex: none; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; text-align: center;
  background: var(--navy-soft); color: var(--navy); font-size: 12.5px; font-weight: 700; line-height: 1.3;
}
.dl-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.dl-main b { font-size: 17px; }
.dl-note { color: var(--muted); font-size: 13.5px; }
.dl-tag {
  margin-left: auto; flex: none; font-size: 12.5px; font-weight: 600; color: #9a6b00;
  background: #fdf3d7; border: 1px solid #f2e2ac; padding: 3px 10px; border-radius: 999px;
}
.dl-card[data-ready="1"] .dl-tag { color: #1a7f45; background: #e5f6ec; border-color: #bfe6cf; }
.dl-tips { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 30px; }
.tip { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; }
.tip b { font-size: 15.5px; }
.tip p { margin-top: 6px; color: var(--ink-2); font-size: 14px; }
.k-copy { background: var(--navy-soft); color: var(--navy); padding: 1px 7px; border-radius: 6px; font-weight: 600; }

/* --------------------------------- 价格 ---------------------------------- */
.price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 44px; }
.pcard {
  position: relative; background: #fff; border: 1px solid var(--border);
  border-radius: 18px; padding: 30px 30px 28px; box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column;
}
.pcard.hot { border: 1.5px solid var(--navy); box-shadow: var(--shadow); }
.p-badge {
  position: absolute; top: -13px; left: 28px; font-size: 12.5px; font-weight: 700;
  color: #fff; background: var(--navy); padding: 3px 12px; border-radius: 999px;
}
.pcard-top { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.p-title { width: 100%; font-size: 15px; font-weight: 700; color: var(--navy); }
.p-price { font-size: 44px; font-weight: 800; letter-spacing: -.5px; }
.p-price i { font-size: 20px; font-style: normal; font-weight: 700; margin-right: 2px; }
.p-period { color: var(--muted); font-size: 14px; }
.plist { margin: 20px 0 24px; display: grid; gap: 10px; }
.plist li { position: relative; padding-left: 24px; font-size: 14.5px; color: var(--ink-2); }
.plist li::before { content: "✓"; position: absolute; left: 2px; color: var(--navy); font-weight: 700; font-size: 13px; }
.pcard .btn { margin-top: auto; }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 42px; }
.step { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; }
.step i {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 50%; background: var(--navy); color: #fff;
  font-style: normal; font-size: 13px; font-weight: 700; margin-bottom: 10px;
}
.step b { display: block; font-size: 15.5px; }
.step span { color: var(--muted); font-size: 13.5px; }

/* --------------------------------- 联系 ---------------------------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 44px; }
.ccard { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 30px; box-shadow: var(--shadow-sm); }
.ccard h3 { font-size: 20px; }
.ccard-sub { margin-top: 8px; color: var(--muted); font-size: 14px; }
.wx-id { display: flex; align-items: center; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
.wx-id code {
  font-size: 18px; font-weight: 700; color: var(--navy); letter-spacing: .5px;
  background: var(--navy-soft); padding: 8px 16px; border-radius: 10px;
}
.qr-slot { margin-top: 22px; position: relative; width: 200px; }
.qr-slot .qr-img { width: 200px; border-radius: 12px; border: 1px solid var(--border); display: none; }
.qr-slot.has-img .qr-img { display: block; }
.qr-slot.has-img .qr-ph { display: none; }
.qr-ph {
  width: 200px; height: 200px; border: 2px dashed var(--border-2); border-radius: 12px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  text-align: center; padding: 18px; color: var(--muted);
}
.qr-ph b { font-size: 14px; color: var(--ink-2); }
.qr-ph span { font-size: 11.5px; line-height: 1.6; }

/* --------------------------------- 页脚 ---------------------------------- */
.site-foot { background: #16283f; color: #c8d2df; padding: 44px 0 40px; font-size: 13.5px; }
.foot-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: #fff; font-size: 15.5px; }
.foot-brand img { border-radius: 7px; }
.foot-dis { margin-top: 16px; max-width: 920px; line-height: 1.9; color: #9fb0c4; }
.foot-line { margin-top: 18px; color: #7e91a8; }
.foot-line a { text-decoration: underline; }

/* ------------------------------- 放大 / 提示 ------------------------------ */
.lightbox {
  position: fixed; inset: 0; z-index: 90; display: none;
  background: rgba(12, 20, 32, .82); padding: 4vh 4vw; cursor: zoom-out;
  overflow: auto;
}
.lightbox.show { display: flex; align-items: flex-start; justify-content: center; }
.lightbox img { max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 20px 60px rgba(0, 0, 0, .5); }
/* 完整 PDF 查看(报告类图点开): 浏览器内嵌阅读器, 可滚动翻页 */
.lightbox .lb-pdf {
  position: relative; width: min(1040px, 94vw); height: 88vh;
  background: #fff; border-radius: 12px; overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .5);
}
.lightbox .lb-pdf iframe { width: 100%; height: 100%; border: 0; }
.lb-open-new {
  position: absolute; right: 14px; top: 12px; z-index: 2;
  background: var(--navy); color: #fff; font-size: 13px; font-weight: 600;
  padding: 7px 14px; border-radius: 999px; box-shadow: 0 4px 14px rgba(0, 0, 0, .25);
}
.fmedia-lg figcaption a.pdf-link { color: var(--navy); font-weight: 600; text-decoration: underline; }
.toast {
  position: fixed; left: 50%; bottom: 34px; transform: translate(-50%, 20px);
  background: #1f2329; color: #fff; font-size: 14px;
  padding: 11px 20px; border-radius: 999px; box-shadow: 0 10px 30px rgba(0, 0, 0, .25);
  opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease; z-index: 95;
  max-width: 86vw; text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* -------------------------------- 进场动效 ------------------------------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* -------------------------------- 响应式 --------------------------------- */
@media (max-width: 980px) {
  .hero-in { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: 38px; }
  .frow, .frow.rev { grid-template-columns: 1fr; gap: 26px; }
  .frow.rev .fmedia { order: 0; }
  .dl-grid, .price-grid, .contact-grid, .fgrid { grid-template-columns: 1fr; }
  .dl-tips, .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  body { font-size: 15.5px; }
  .section { padding: 56px 0; }
  .sec-title { font-size: 25px; }
  .hero { padding: 40px 0 52px; }
  .hero h1 { font-size: 31px; }
  .lead { font-size: 15.5px; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; gap: 2px; background: #fff;
    border-bottom: 1px solid var(--border); padding: 10px 16px 14px;
    box-shadow: 0 18px 30px rgba(31, 58, 95, .10);
  }
  .nav.open { display: flex; }
  .nav-toggle { display: block; }
  .dl-tips, .steps { grid-template-columns: 1fr; }
  .dl-card { flex-wrap: wrap; }
  .dl-tag { margin-left: 0; }
  .p-price { font-size: 38px; }
  .fmedia img.tall { max-height: 460px; }
  .qr-slot, .qr-ph, .qr-slot .qr-img { width: 100%; max-width: 240px; }
}

/* --------------------------- 功能大图流(2026-10-13 重排) ---------------------------
   原则: 一张图只讲一个功能点; 特写按接近原像素显示, 不再把 1440px 整窗塞进小格子;
   图下都有图注, data-full 的图点开 lightbox 看完整原图。 */
.frow-lg { margin-top: 74px; text-align: center; }
.frow-lg .fcopy { max-width: 840px; margin: 0 auto; }
.frow-lg .fcopy h3 { font-size: 26px; font-weight: 700; margin-top: 14px; }
.frow-lg .fcopy p { margin-top: 14px; color: var(--ink-2); font-size: 15.5px; }
.frow-lg .fpoints { display: inline-block; text-align: left; margin-top: 14px; }
.fmedia-lg { margin-top: 28px; }
.fmedia-lg figure { margin: 0; }
.fmedia-lg > figure > img, .fmedia-lg:not(.dip) img {
  display: block; width: 100%; max-width: 1040px; margin: 0 auto;
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); background: #fff; cursor: zoom-in;
}
.fmedia-lg.wide img { max-width: 1140px; }
.fmedia-lg.doc img { max-width: 880px; }   /* 竖版长图(完整问答/整页报告): 收窄一点, 整图完整不裁 */
.fmedia-lg figcaption, .wf-fig figcaption {
  margin-top: 10px; text-align: center; color: var(--muted); font-size: 13.5px;
}
/* ① 监测双图并排: 通知卡(原尺寸 660) + 工作台裁切(390 竖条) */
.fmedia-lg.dip { display: flex; gap: 26px; align-items: flex-start; justify-content: center; }
.fmedia-lg.dip img { width: auto; height: auto; max-width: 100%; display: block; margin: 0 auto; }
.fmedia-lg.dip figure:first-child { max-width: 620px; }
.fmedia-lg.dip figure:last-child { max-width: 400px; }

/* 功能区末尾的"两种典型工作流"整幅图 */
.wf-fig { margin: 64px auto 0; max-width: 900px; }
.wf-fig img {
  width: 100%; border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); cursor: zoom-in; display: block;
}
@media (max-width: 720px) {
  .fmedia-lg.dip { flex-direction: column; align-items: center; }
}