:root {
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: #172033;
  background: #f6f8fc;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; min-height: 100vh; margin: 0; background: radial-gradient(circle at 10% 0%, rgba(49,87,244,.08), transparent 32rem), #f6f8fc; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.about-header {
  min-height: 72px;
  padding: 0 max(24px, calc((100% - 900px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid #e5e9f2;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
}
.about-brand { display: flex; align-items: center; }
.about-brand img { width: 124px; height: 42px; object-fit: contain; }
.about-brand > span { width: 1px; height: 22px; margin: 0 13px 0 9px; background: #e5e9f2; }
.about-brand strong { font-size: 15px; }
.back-link { padding: 9px 13px; color: #3157f4; border-radius: 9px; background: #eef2ff; font-size: 13px; font-weight: 650; }
.about-main { width: min(calc(100% - 40px), 820px); margin: 0 auto; padding: 54px 0 72px; }
.about-hero { margin-bottom: 30px; text-align: center; }
.eyebrow { margin: 0 0 8px; color: #3157f4; font-size: 11px; font-weight: 800; letter-spacing: .15em; }
.about-hero h1 { margin: 0; font-size: clamp(30px, 5vw, 44px); letter-spacing: -.04em; }
.about-hero > p:last-child { max-width: 660px; margin: 14px auto 0; color: #667085; font-size: 15px; line-height: 1.75; }
.content-card { margin-top: 18px; padding: 25px; border: 1px solid #e5e9f2; border-radius: 18px; background: #fff; box-shadow: 0 12px 36px rgba(16,24,40,.055); }
.card-heading { display: flex; align-items: flex-start; gap: 14px; }
.card-icon { width: 34px; height: 34px; flex: none; display: grid; place-items: center; color: #3157f4; border-radius: 10px; background: #eef2ff; font-size: 11px; font-weight: 800; }
.card-heading h2 { margin: 1px 0 5px; font-size: 19px; }
.card-heading p { margin: 0; color: #667085; font-size: 13px; }
.step-list, .privacy-list { margin: 20px 0 0; padding-left: 22px; color: #475467; font-size: 14px; line-height: 1.75; }
.step-list li + li, .privacy-list li + li { margin-top: 8px; }
.clear-zone { margin-top: 22px; padding: 16px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 1px solid #fed7d7; border-radius: 12px; background: #fff8f7; }
.clear-zone strong { color: #912018; font-size: 13px; }
.clear-zone p { margin: 5px 0 0; color: #8a4b46; font-size: 12px; line-height: 1.55; }
.clear-zone button { flex: none; height: 38px; padding: 0 14px; color: #b42318; border: 1px solid #f3b8b3; border-radius: 9px; background: #fff; font-size: 12px; font-weight: 650; cursor: pointer; }
.clear-zone button:hover { color: #fff; border-color: #b42318; background: #b42318; }
.email-link { margin: 20px 0 2px 48px; display: inline-flex; padding: 10px 14px; color: #3157f4; border-radius: 9px; background: #eef2ff; font-size: 14px; font-weight: 650; }
.toast { position: fixed; left: 50%; bottom: 24px; padding: 10px 16px; color: #fff; border-radius: 9px; background: #172033; font-size: 13px; opacity: 0; pointer-events: none; transform: translate(-50%, 9px); transition: .17s ease; }
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
@media (max-width: 600px) {
  .about-header { min-height: 62px; padding: 0 14px; }
  .about-brand img { width: 104px; }
  .about-brand > span, .about-brand strong { display: none; }
  .about-main { width: calc(100% - 24px); padding: 36px 0 48px; }
  .content-card { padding: 18px; border-radius: 14px; }
  .clear-zone { align-items: stretch; flex-direction: column; }
  .clear-zone button { width: 100%; }
  .email-link { margin-left: 0; }
}