.login-page {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    align-items: safe center;
    padding: 22px 20px;
    box-sizing: border-box;
    background:
        radial-gradient(900px 520px at 18% 12%, rgba(37, 99, 235, .18), transparent 58%),
        radial-gradient(700px 480px at 88% 78%, rgba(20, 184, 166, .16), transparent 55%),
        linear-gradient(145deg, var(--sidebar-border) 0%, var(--surface-3) 42%, var(--surface-3) 100%);
}
.login-layout {
    width: min(1120px, 100%);
    display: grid;
    grid-template-columns: 340px minmax(0, 1fr);
    gap: 20px;
    align-items: stretch;
}
.login-box {
    background: #fff;
    border-radius: 14px;
    padding: 30px 28px 22px;
    box-shadow: 0 18px 48px rgba(15, 23, 42, .12);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.login-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.login-logo .mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(145deg, var(--brand), var(--st-info-fg));
    box-shadow: inset 0 -2px 0 rgba(0,0,0,.12);
}
.login-brand {
    font-size: var(--fs-title);
    font-weight: 700;
    letter-spacing: .04em;
    color: var(--st-info-fg);
}
.login-title {
    margin: 0 0 6px;
    font-size: calc(var(--fs-title) + 2px);
    font-weight: 700;
    color: var(--text-strong);
}
.login-sub {
    color: var(--muted);
    margin: 0 0 18px;
    font-size: var(--fs-sm);
}
.login-error {
    background: var(--st-alert-bg);
    color: var(--st-danger-fg);
    border: 1px solid var(--st-danger-line);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 14px;
    font-size: var(--fs-sm);
}

.login-ok {
    background: var(--st-ok-bg);
    color: var(--st-ok-fg);
    border: 1px solid var(--st-ok-line);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 14px;
    font-size: var(--fs-sm);
}

.login-hint {
    line-height: 1.7;
}
.login-field { margin-bottom: 14px; }
.login-field label {
    display: block;
    color: var(--text-2);
    margin-bottom: 6px;
    font-size: var(--fs-sm);
    font-weight: 500;
}
.login-field input {
    width: 100%;
    height: 38px;
    padding: 0 12px;
    background: var(--th-bg);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    color: var(--text-strong);
    font-size: var(--fs);
    outline: none;
}
.login-field input:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .15);
    background: #fff;
}
.login-submit {
    width: 100%;
    height: 40px;
    margin-top: 6px;
    border-radius: 8px;
    font-size: var(--fs-h);
    font-weight: 600;
    letter-spacing: .12em;
}
.login-links {
    margin-top: 18px;
    text-align: center;
    color: var(--muted-2);
    font-size: var(--fs);
    display: flex;
    justify-content: center;
    gap: 8px;
}
.login-links a { color: var(--brand); }

.login-roles {
    background: #fff;
    border: 1px solid var(--sidebar-border);
    border-radius: 14px;
    padding: 22px 22px 18px;
    box-shadow: 0 12px 36px rgba(15, 23, 42, .08);
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}
.login-roles-head { margin-bottom: 14px; }
.login-roles h2 {
    margin: 0 0 5px;
    font-size: var(--fs-lg);
    font-weight: 700;
    color: var(--text-strong);
}
.login-roles-tip {
    margin: 0;
    color: var(--text-3);
    font-size: var(--fs-sm);
    line-height: 1.45;
}
.login-role-group + .login-role-group { margin-top: 12px; }
.login-role-group-title {
    font-size: var(--fs-xs);
    font-weight: 600;
    letter-spacing: .08em;
    color: var(--muted-2);
    margin-bottom: 6px;
    line-height: 1.2;
}
.login-role-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
}
.login-role-card {
    margin: 0;
    display: block;
    min-width: 0;
    border: 1px solid var(--sidebar-border);
    border-radius: 9px;
    background: var(--th-bg);
    color: var(--text-strong);
    transition: border-color .15s, background .15s, box-shadow .15s, transform .15s;
}
.login-role-card:hover {
    border-color: rgba(37, 99, 235, .55);
    background: var(--brand-tint);
    box-shadow: 0 3px 10px rgba(37, 99, 235, .12);
    transform: translateY(-1px);
}
.login-role-main {
    display: block;
    width: 100%;
    min-width: 0;
    padding: 8px 10px 9px;
    border: 0;
    border-radius: 9px;
    background: none;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
}
.login-role-main:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: -2px;
}
.login-role-card strong {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--fs);
    font-weight: 700;
    line-height: 1.25;
    white-space: nowrap;
    overflow: hidden;
}
.login-role-arrow {
    margin-left: auto;
    font-style: normal;
    font-size: var(--fs-xs);
    color: var(--brand);
    opacity: 0;
    transform: translateX(-3px);
    transition: opacity .15s, transform .15s;
}
.login-role-card:hover .login-role-arrow,
.login-role-main:focus-visible .login-role-arrow {
    opacity: 1;
    transform: none;
}
.login-role-cred {
    display: block;
    margin-top: 2px;
    font-size: var(--fs-xs);
    line-height: 1.25;
    color: var(--text-2);
    font-family: var(--font-mono);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.login-role-card em {
    display: block;
    margin-top: 1px;
    font-style: normal;
    font-size: var(--fs-xs);
    line-height: 1.3;
    color: var(--muted-2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 5 列在中等宽度放不下时逐级降列，保证文字不挤 */
@media (max-width: 1220px) {
    .login-role-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 1020px) {
    .login-layout { grid-template-columns: 320px minmax(0, 1fr); }
    .login-role-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* 矮屏（1366×768 笔记本可视区）再压一档，确保一屏不滚动 */
@media (max-height: 800px) and (min-width: 861px) {
    .login-page { padding: 14px 18px; }
    .login-box { padding: 22px 26px 18px; }
    .login-roles { padding: 16px 20px 14px; }
    .login-roles-head { margin-bottom: 10px; }
    .login-role-group + .login-role-group { margin-top: 9px; }
    .login-field { margin-bottom: 10px; }
    .login-sub { margin-bottom: 14px; }
    .login-links { margin-top: 12px; }
}

/* 更矮的窗口（如 1024×500 的浮窗）再压一档：隐藏角色描述行，仅留名称与账号 */
@media (max-height: 620px) and (min-width: 861px) {
    .login-page { padding: 10px 16px; }
    .login-box { padding: 16px 22px 12px; }
    .login-logo { margin-bottom: 8px; }
    .login-sub { margin-bottom: 10px; }
    .login-field { margin-bottom: 8px; }
    .login-field input { height: 34px; }
    .login-submit { height: 36px; }
    .login-links { margin-top: 8px; }
    .login-roles { padding: 12px 18px 12px; }
    .login-roles-head { margin-bottom: 8px; }
    .login-roles-tip { display: none; }
    .login-role-group + .login-role-group { margin-top: 7px; }
    .login-role-grid { gap: 6px; }
    .login-role-main { padding: 6px 9px 7px; }
    .login-role-card em { display: none; }
}

@media (max-width: 860px) {
    .login-page { align-items: flex-start; padding: 16px 14px 28px; }
    .login-layout {
        grid-template-columns: 1fr;
        max-width: 460px;
        gap: 14px;
    }
    .login-box { padding: 26px 22px 20px; }
    .login-roles { padding: 20px 18px 18px; }
    .login-role-group + .login-role-group { margin-top: 10px; }
    .login-role-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }
    .login-role-main { padding: 7px 9px 8px; }
    .login-role-card em { display: none; }
    .login-role-arrow { opacity: .55; transform: none; }
}
@media (max-width: 380px) {
    .login-role-grid { gap: 6px; }
    .login-role-main { padding: 6px 8px 7px; }
    .login-role-card strong { font-size: var(--fs-sm); }
}