:root {
  font-family: "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #1b2d43;
  background: #f0f4f8;
  font-synthesis: none;
  line-height: 1.55;
  color-scheme: light;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
a { color: #175fa8; text-decoration: none; }
a:hover { text-decoration: underline; }
button, input { font: inherit; }
button, a, input { touch-action: manipulation; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid #77b6f0; outline-offset: 3px; }

.topbar {
  padding: 20px max(24px, calc((100vw - 1080px) / 2));
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #dde5ed;
  background: #fff;
}
.brandmark {
  width: 34px;
  height: 38px;
  border-radius: 7px 7px 10px 10px;
  background: #215f9d;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 17px;
}
.brand { font-weight: 700; font-size: 17px; }
.brand small { display: block; color: #697c8e; font-size: 11px; font-weight: 400; }
.layout {
  max-width: 1080px;
  padding: 52px 24px 48px;
  margin: auto;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.intro { padding-top: 48px; }
.eyebrow { font-size: 12px; font-weight: 700; color: #28649b; }
.intro h1 { font-size: 36px; line-height: 1.3; margin: 14px 0 20px; }
.intro .lead { font-size: 16px; color: #586b7c; max-width: 350px; margin-bottom: 32px; }
.note { border-left: 3px solid #9abbd9; padding-left: 16px; max-width: 360px; }
.note strong { display: block; font-size: 14px; margin-bottom: 6px; }
.note p { font-size: 13px; color: #66798b; margin: 0; }
.card {
  border: 1px solid #dce4ed;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 8px 28px #183e6110;
  padding: 28px 30px 26px;
}
.tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  margin: -4px -5px 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e7edf3;
}
.tabs a { text-align: center; font-size: 12px; white-space: nowrap; padding: 8px 3px; border-radius: 6px; color: #65788b; }
.tabs a[aria-current=page] { background: #eaf2fb; color: #195c9a; font-weight: 700; }
.form-title { font-size: 20px; font-weight: 700; margin: 0 0 5px; }
.form-description { color: #718295; font-size: 12px; margin: 0 0 22px; }
.field { display: block; margin-bottom: 16px; }
.field > span { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.field input {
  width: 100%;
  height: 45px;
  border: 1px solid #cbd7e2;
  border-radius: 7px;
  background: #fcfdff;
  color: #20344c;
  padding: 10px 12px;
  font-size: 14px;
  transition: border-color .15s;
}
.field input:hover { border-color: #8daac4; }
.field input:focus { border-color: #2669ab; outline: 2px solid #e0eefc; outline-offset: 1px; }
.field small { display: block; margin-top: 5px; color: #75869a; font-size: 11px; }
.submit {
  display: block;
  width: 100%;
  min-height: 46px;
  border: 0;
  border-radius: 7px;
  margin-top: 24px;
  padding: 11px;
  color: #fff;
  background: #2065a7;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
}
.submit:hover:not(:disabled) { background: #164f88; }
.submit:disabled { opacity: .55; cursor: wait; }
.status { min-height: 20px; margin: 16px 0 0; font-size: 13px; overflow-wrap: anywhere; color: #607386; }
.status[data-kind=error] { color: #a53030; }
.status[data-kind=success] { color: #23704b; }
.footnote { font-size: 11px; color: #7b8c9c; text-align: center; margin: 18px 0 0; }
.bottom { color: #8491a0; font-size: 11px; text-align: center; padding: 0 24px 24px; }
noscript { display: block; margin: 16px; color: #a53030; font-size: 13px; }

@media (max-width: 760px) {
  .topbar { padding: 15px 22px; }
  .layout { display: block; max-width: 520px; padding: 24px 20px 30px; }
  .intro { padding: 0; }
  .intro h1 { font-size: 27px; margin: 8px 0 10px; }
  .intro .lead { font-size: 14px; margin: 0 0 20px; }
  .note { display: none; }
  .card { padding: 24px 23px 22px; }
  .tabs { margin-bottom: 23px; }
  .bottom { font-size: 10px; }
}

@media (max-width: 360px) {
  .layout { padding: 20px 12px; }
  .card { padding: 21px 18px; }
  .tabs { grid-template-columns: repeat(2, 1fr); gap: 4px; }
  .intro h1 { font-size: 25px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}