:root { color-scheme: light; font-family: Inter, "Microsoft YaHei", sans-serif; color: #18322d; background: #eef6f2; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at 50% 0, #fff 0, #eef6f2 65%); }
.login-shell { width: min(100%, 440px); }
.login-card { background: #fff; border: 1px solid #d7e6df; border-radius: 22px; padding: clamp(24px, 6vw, 42px); box-shadow: 0 18px 50px rgba(24, 64, 52, .1); }
.login-mark { width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; background: #0d7057; color: #fff; font-size: 22px; }
.eyebrow { color: #0d7057; font-weight: 700; margin: 22px 0 6px; }
h1 { margin: 0 0 12px; font-size: clamp(26px, 7vw, 34px); }
.intro, .boundary { color: #536a64; line-height: 1.65; }
form { display: grid; gap: 16px; margin: 24px 0; }
label { display: grid; gap: 7px; font-weight: 700; }
input { width: 100%; min-height: 46px; border: 1px solid #bfd2ca; border-radius: 11px; padding: 10px 12px; font: inherit; }
input:focus { outline: 3px solid #bfe7da; border-color: #0d7057; }
button { min-height: 48px; border: 0; border-radius: 11px; background: #0d7057; color: #fff; font: inherit; font-weight: 700; cursor: pointer; }
button:disabled { opacity: .65; cursor: wait; }
#login-status { min-height: 22px; margin: 0; color: #536a64; }
#login-status.error { color: #a32929; }
.boundary { border-top: 1px solid #e2ece8; padding-top: 18px; margin: 0; font-size: 13px; }