:root { color-scheme: light; --ink: #202b2b; --muted: #6a7575; --accent: #087c70; --border: #dce3e1; }
* { box-sizing: border-box; letter-spacing: 0; }
body { margin: 0; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; background: #f5f7f6; color: var(--ink); font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif; }
.site-header { min-height: 96px; padding: 20px 40px; display: flex; align-items: center; justify-content: space-between; gap: 20px; background: #fff; border-bottom: 1px solid #e6ebe9; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 22px; line-height: 1.4; font-weight: 650; color: var(--ink); white-space: nowrap; }
.brand:hover { color: var(--accent); }
.brand img { display: block; width: 56px; height: 56px; object-fit: contain; flex-shrink: 0; }
.header-label { color: var(--muted); font-size: 13px; padding-left: 20px; border-left: 1px solid var(--border); white-space: nowrap; }
main { flex: 1; display: grid; place-items: center; padding: 48px 24px; background: #fff; }
.login-panel { width: 100%; max-width: 380px; }
.section-mark { width: 32px; height: 4px; background: #de805f; margin-bottom: 22px; }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 600; margin-bottom: 8px; }
h1 { font-size: 32px; line-height: 1.4; font-weight: 650; margin: 0 0 8px; }
.intro { color: var(--muted); margin-bottom: 30px; }
.field { margin-bottom: 20px; }
label { display: block; margin-bottom: 8px; font-size: 13px; font-weight: 600; }
.input-wrap { display: flex; align-items: center; height: 50px; border: 1px solid var(--border); border-radius: 6px; background: #fff; transition: border-color .15s, box-shadow .15s; overflow: hidden; }
.input-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px #087c7012; }
.input-wrap > i { flex: 0 0 42px; text-align: center; color: #7b8985; font-size: 18px; }
input { width: 100%; min-width: 0; height: 100%; border: 0; background: transparent; color: var(--ink); padding: 0 12px 0 0; font: inherit; outline: none; }
input::placeholder { color: #8a9591; }
button { font: inherit; cursor: pointer; }
.icon-button { width: 46px; height: 46px; flex-shrink: 0; border: 0; background: transparent; color: var(--muted); }
.icon-button:hover { color: var(--accent); background: #f0f6f3; }
.captcha-row { display: grid; grid-template-columns: minmax(0, 1fr) 124px; gap: 12px; }
.captcha-button { display: flex; justify-content: space-evenly; align-items: center; height: 50px; padding: 4px; border: 1px solid var(--border); border-radius: 6px; color: var(--muted); background: #fafcfb; }
.captcha-button img { object-fit: contain; width: 80px; height: 40px; font-size: 11px; }
.captcha-button:hover { border-color: var(--accent); color: var(--accent); }
.form-message { min-height: 24px; margin: -6px 0 12px; color: #b34434; font-size: 13px; overflow-wrap: anywhere; }
.submit-button { width: 100%; min-height: 50px; display: flex; align-items: center; justify-content: center; gap: 14px; background: var(--accent); border: 1px solid var(--accent); color: #fff; border-radius: 6px; font-weight: 600; transition: background .15s; }
.submit-button:hover { background: #06685e; }
button:disabled { opacity: .65; cursor: wait; }
button:focus-visible, a:focus-visible { outline: 3px solid #50a99b; outline-offset: 3px; }
.access-note { text-align: center; color: var(--muted); font-size: 12px; margin-top: 24px; }
.access-note i { color: #7a9084; margin-right: 4px; }
footer { min-height: 64px; padding: 20px 24px; display: flex; justify-content: center; align-items: center; gap: 12px; color: #737e79; font-size: 12px; border-top: 1px solid #e6ebe9; }
.footer-dot { color: #a4b0aa; }
@media (max-width: 480px) { .site-header { padding: 16px 20px; min-height: 80px; gap: 12px; } .brand { font-size: 20px; gap: 10px; } .brand img { width: 44px; height: 44px; } .header-label { padding-left: 12px; font-size: 12px; } main { padding: 36px 24px; } h1 { font-size: 28px; } input { font-size: 16px; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }