:root {
  color-scheme: light;
  --ink: #21332c;
  --muted: #6d7c75;
  --line: #d8e1db;
  --paper: #fffdf9;
  --canvas: #f3f5f0;
  --green: #356b55;
  --green-dark: #25503f;
  --gold: #b3843a;
  --red: #a8423c;
  --shadow: 0 24px 70px rgba(34, 54, 44, .14);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--canvas); }
body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: linear-gradient(145deg, #f8f7f0 0%, #edf3ee 100%);
}
button, input { font: inherit; }
.hidden { display: none !important; }
.muted { color: var(--muted); line-height: 1.75; }

.background-orb {
  position: fixed;
  z-index: 0;
  border-radius: 50%;
  pointer-events: none;
}
.orb-one { width: 440px; height: 440px; top: -190px; left: -150px; background: rgba(160, 184, 155, .24); }
.orb-two { width: 560px; height: 560px; right: -250px; bottom: -270px; background: rgba(223, 193, 138, .2); }

.login-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(380px, .88fr);
  align-items: center;
  gap: clamp(42px, 7vw, 86px);
  width: min(1120px, calc(100% - 40px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 56px 0;
}
.eyebrow, .section-kicker {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .15em;
}
.login-intro h1 {
  max-width: 620px;
  margin: 10px 0 20px;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: clamp(46px, 6.5vw, 76px);
  line-height: 1.08;
  letter-spacing: -.045em;
}
.lead { max-width: 590px; margin: 0; color: #53665d; font-size: 19px; line-height: 1.85; }
.trust-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.trust-points span {
  padding: 9px 13px;
  border: 1px solid rgba(53, 107, 85, .18);
  border-radius: 999px;
  color: var(--green-dark);
  background: rgba(255, 255, 255, .56);
  font-size: 13px;
}

.login-card {
  min-height: 520px;
  padding: clamp(30px, 4vw, 42px);
  border: 1px solid rgba(255, 255, 255, .8);
  border-radius: 28px;
  background: rgba(255, 253, 249, .92);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
.login-card h2 { margin: 0 0 10px; font-size: 30px; }
.stack { display: grid; gap: 18px; margin-top: 28px; }
label { display: grid; gap: 8px; color: #42544b; font-size: 14px; font-weight: 800; }
input {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  border: 1px solid #c9d5ce;
  border-radius: 11px;
  padding: 11px 13px;
  color: var(--ink);
  background: #fff;
  outline: none;
  font-weight: 600;
}
input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(53, 107, 85, .13); }
.button {
  min-height: 48px;
  border: 1px solid transparent;
  border-radius: 11px;
  padding: 11px 16px;
  cursor: pointer;
  font-weight: 800;
  transition: transform .15s ease, background .15s ease;
}
.button:hover { transform: translateY(-1px); }
.button:disabled { cursor: wait; opacity: .55; transform: none; }
.button.primary { color: #fff; background: var(--green); }
.button.primary:hover { background: var(--green-dark); }
.button.secondary { width: 100%; border-color: #bfd0c6; color: var(--green-dark); background: #f7faf7; }
.message { min-height: 25px; margin: 18px 0 0; color: var(--red); font-size: 14px; line-height: 1.6; }
.message.success { color: var(--green); }
.dev-login { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); }
.dev-login p { margin: 0 0 10px; color: var(--muted); font-size: 12px; }
.security-note { margin: 18px 0 0; padding-top: 18px; border-top: 1px solid var(--line); color: #78867f; font-size: 12px; line-height: 1.65; }

@media (max-width: 820px) {
  .login-shell { grid-template-columns: 1fr; gap: 34px; width: min(620px, calc(100% - 28px)); padding: 44px 0; }
  .login-intro h1 { font-size: clamp(40px, 12vw, 60px); }
  .lead { font-size: 17px; }
  .login-card { min-height: 0; }
}

@media (max-width: 430px) {
  .login-shell { width: min(100% - 20px, 620px); padding: 28px 0; }
  .login-card { padding: 26px 20px; border-radius: 22px; }
  .trust-points { gap: 7px; margin-top: 24px; }
  .trust-points span { padding: 7px 10px; font-size: 12px; }
}