:root { --cream: #FFF7E9; --cocoa: #5B4636; --coral-deep: #C8443F; --mint-deep: #2F7D52; --line: #EADBC8; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--cream); color: var(--cocoa); line-height: 1.7;
  font-family: -apple-system, "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Hiragino Sans", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 1.6rem; line-height: 1.35; margin: 16px 0 4px; }
h1 small { font-size: 1rem; font-weight: 500; opacity: .75; }
h2 { font-size: 1.1rem; margin: 28px 0 6px; }
a { color: var(--coral-deep); }
.meta { font-size: .9rem; opacity: .75; }
.lang { font-size: .95rem; }
hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }
form { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px; margin: 24px 0 12px; display: grid; gap: 14px; }
label { display: grid; gap: 6px; font-weight: 600; }
label.check { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; }
input[type=email], input[type=password] { font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; width: 100%; }
button { font: inherit; font-weight: 700; padding: 12px; border: 0; border-radius: 12px; background: var(--coral-deep); color: #fff; cursor: pointer; }
button:disabled { opacity: .5; cursor: default; }
#result.ok { color: var(--mint-deep); font-weight: 600; }
#result.error { color: var(--coral-deep); font-weight: 600; }