:root {
  color-scheme: light;
  --ink: #14222d;
  --muted: #647582;
  --line: rgba(19, 100, 96, .2);
  --accent: #0d8f84;
  --accent-strong: #076a64;
  --surface: rgba(255, 255, 255, .88);
}
* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  display: grid;
  place-items: center;
  padding: max(24px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  color: var(--ink);
  font-family: "Microsoft YaHei UI", "PingFang SC", sans-serif;
  background: radial-gradient(circle at 16% 12%, rgba(38, 179, 164, .22), transparent 32rem), radial-gradient(circle at 90% 85%, rgba(197, 103, 116, .16), transparent 30rem), linear-gradient(135deg, #edf7f6, #f8fafc 52%, #f7eeee);
}
.login-shell {
  width: min(920px, 100%);
  min-height: min(620px, calc(100dvh - 48px));
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(330px, .95fr);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 34px;
  background: var(--surface);
  box-shadow: 0 34px 90px rgba(28, 72, 82, .22), inset 0 1px 0 #fff;
  backdrop-filter: blur(28px) saturate(1.12);
}
.login-brand {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(34px, 6vw, 72px);
  overflow: hidden;
  background: linear-gradient(145deg, rgba(6, 113, 105, .96), rgba(18, 143, 130, .9));
  color: #fff;
}
.login-brand::before, .login-brand::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; }
.login-brand::before { width: 360px; height: 360px; right: -170px; top: -130px; }
.login-brand::after { width: 270px; height: 270px; left: -120px; bottom: -130px; }
.brand-mark { width: 74px; height: 74px; display: grid; place-items: center; border-radius: 24px; color: var(--accent-strong); background: #fff; box-shadow: 0 20px 44px rgba(0,0,0,.18); font-size: 34px; }
.login-brand h1 { margin: 24px 0 10px; font-size: clamp(32px, 5vw, 54px); letter-spacing: -.06em; line-height: 1; }
.login-brand p { max-width: 31rem; margin: 0; color: rgba(255,255,255,.78); font-size: 16px; line-height: 1.7; }
.login-brand small { position: relative; z-index: 1; letter-spacing: .18em; color: rgba(255,255,255,.68); }
.login-panel { display: flex; flex-direction: column; justify-content: center; gap: 28px; padding: clamp(30px, 5vw, 62px); }
.login-panel header span { color: var(--accent); font-weight: 900; letter-spacing: .16em; font-size: 12px; }
.login-panel h2 { margin: 8px 0 6px; font-size: clamp(28px, 4vw, 42px); letter-spacing: -.04em; }
.login-panel header p { margin: 0; color: var(--muted); }
.login-form { display: grid; gap: 18px; }
.login-field { display: grid; gap: 8px; }
.login-field span { font-size: 14px; font-weight: 800; }
.login-field input { width: 100%; min-height: 58px; padding: 0 16px; border: 1px solid var(--line); border-radius: 16px; color: var(--ink); background: rgba(246, 250, 251, .88); font: inherit; font-size: 16px; outline: 0; transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease; }
.login-field input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(13, 143, 132, .13); transform: translateY(-1px); }
.login-submit { min-height: 58px; border: 0; border-radius: 16px; color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent-strong)); font: inherit; font-size: 17px; font-weight: 900; cursor: pointer; box-shadow: 0 18px 34px rgba(13, 143, 132, .24); transition: transform .18s ease, box-shadow .18s ease, filter .18s ease; }
.login-submit:hover { transform: translateY(-2px); box-shadow: 0 22px 42px rgba(13, 143, 132, .3); }
.login-submit:active { transform: scale(.985); }
.login-submit:disabled { cursor: wait; opacity: .65; }
.login-error { min-height: 24px; margin: 0; color: #b83e4b; font-weight: 750; line-height: 1.5; }
.login-security { display: flex; gap: 9px; align-items: center; color: var(--muted); font-size: 13px; }
.login-security i { color: var(--accent); font-size: 19px; }
.site-filing { position: fixed; z-index: 5; left: 50%; bottom: max(8px, env(safe-area-inset-bottom)); transform: translateX(-50%); font-size: 12px; line-height: 1; white-space: nowrap; }
.site-filing a { color: color-mix(in srgb, var(--muted) 88%, transparent); text-decoration: none; transition: color .18s ease; }
.site-filing a:hover, .site-filing a:focus-visible { color: var(--accent-strong); text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 720px) {
  body { place-items: stretch; padding: 0; }
  .login-shell { min-height: 100dvh; grid-template-columns: 1fr; border: 0; border-radius: 0; }
  .login-brand { min-height: 220px; padding: 30px 26px; }
  .login-brand h1 { margin-top: 14px; }
  .login-brand p { display: none; }
  .brand-mark { width: 58px; height: 58px; border-radius: 18px; font-size: 28px; }
  .login-panel { justify-content: flex-start; padding: 34px 24px max(58px, calc(env(safe-area-inset-bottom) + 42px)); }
  .login-field input, .login-submit { min-height: 56px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } }