:root {
  --ink: #111820;
  --muted: #687382;
  --blue: #087cff;
  --blue-soft: #eaf3ff;
  --paper: #f5f7fb;
  --line: #dce3ec;
  --white: #fff;
  --page: min(1280px, calc(100vw - 64px));
}

* { box-sizing: border-box; }

html { background: var(--paper); }

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(17, 24, 32, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 24, 32, .035) 1px, transparent 1px),
    var(--paper);
  background-size: 44px 44px;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.site-header {
  width: var(--page);
  min-height: 80px;
  margin: 0 auto;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--blue);
  font-size: 20px;
  font-weight: 900;
}

.brand-copy strong,
.brand-copy small { display: block; }
.brand-copy strong { font-size: 17px; }
.brand-copy small { margin-top: 3px; color: var(--muted); font-size: 10px; }

main { width: var(--page); margin: 0 auto; }

.about-hero {
  min-height: calc(100vh - 176px);
  padding: clamp(64px, 8vh, 104px) 0;
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(400px, .86fr);
  gap: clamp(60px, 7vw, 112px);
  align-items: center;
}

.eyebrow {
  margin: 0 0 26px;
  display: flex;
  align-items: center;
  gap: 13px;
  color: #6f7886;
  font-size: 14px;
  font-weight: 800;
}

.eyebrow span { width: 27px; height: 3px; background: var(--ink); }

h1 {
  margin: 0;
  font-size: clamp(52px, 5.4vw, 78px);
  line-height: 1.04;
}

h1 span { color: var(--blue); }

.lead {
  max-width: 720px;
  margin: 38px 0 0;
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.9;
}

.expectation {
  max-width: 720px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.company-facts { margin: 40px 0 0; border-top: 1px solid var(--line); }
.company-facts div {
  min-height: 67px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 128px 1fr;
  align-items: center;
}
.company-facts dt { color: #7b8592; font-size: 15px; }
.company-facts dd { margin: 0; font-size: 16px; font-weight: 700; }

.product-experience {
  min-height: 530px;
  padding: 30px;
  border: 1px solid rgba(17, 24, 32, .12);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--blue);
  color: var(--white);
  box-shadow: 24px 30px 0 rgba(8, 124, 255, .08);
}

.experience-heading {
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255,255,255,.32);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.experience-heading h2 { margin: 0; font-size: 20px; }
.experience-heading span { width: 10px; height: 10px; border-radius: 50%; background: white; }

.experience-content {
  flex: 1;
  display: grid;
  place-items: center;
}
.experience-content figure {
  width: min(310px, 100%);
  margin: 0;
  justify-self: center;
}
.experience-content img {
  width: 100%;
  aspect-ratio: 1;
  padding: 12px;
  border-radius: 8px;
  background: white;
  object-fit: cover;
  box-shadow: 0 18px 40px rgba(0, 44, 112, .22);
}
.experience-content figcaption {
  margin-top: 16px;
  text-align: center;
  font-size: 15px;
  font-weight: 700;
}

.experience-note {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.32);
  color: rgba(255,255,255,.78);
  text-align: center;
  font-size: 13px;
}

footer {
  width: var(--page);
  min-height: 96px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 32px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}
footer strong { color: var(--ink); font-size: 14px; }
footer p { margin: 0; }
footer a { text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 980px) {
  :root { --page: min(760px, calc(100vw - 40px)); }
  .about-hero { grid-template-columns: 1fr; gap: 52px; }
  .product-experience { min-height: 460px; }
}

@media (max-width: 620px) {
  :root { --page: calc(100vw - 28px); }
  .site-header { min-height: 70px; }
  .brand-copy small { display: none; }
  .about-hero { min-height: auto; padding: 52px 0 62px; }
  h1 { font-size: 45px; }
  .lead { margin-top: 30px; font-size: 17px; }
  .company-facts div { grid-template-columns: 96px 1fr; gap: 14px; }
  .company-facts dd { font-size: 14px; line-height: 1.5; }
  .product-experience { min-height: 0; padding: 22px; box-shadow: 12px 14px 0 rgba(8, 124, 255, .08); }
  .experience-content { margin: 34px 0; }
  .experience-content figure { width: min(260px, 100%); }
  .experience-content img { padding: 9px; }
  footer { padding: 28px 0; grid-template-columns: 1fr; gap: 11px; }
}

@media (max-width: 390px) {
  .brand-copy strong { font-size: 15px; }
  .experience-content figure { width: min(238px, 100%); }
}